Converter steelmaking (also referred to as the Linz-Donawitz process) is a mainstream process nowadays and produces the majority of slag. Click Here The use of waste aggregates can also reduce the cost of the concrete production (Kalyoncu, There are many types of steel-slag, which are derived from the manufacture of different kinds of steel, the steelmaking conditions and slag dispatching process. Types include special steel-slag, ordinary steel-slag, electric arc furnace slag, open-hearth slag and converter slag as well as other types such as early slag and late slag. Steel slag is a waste material generated as a by-product during the manufacturing of steel from steel industries. Meanwhile, it only consumes about 0.2-0.5t of virgin raw materials against about 1.4t for 1t of OPC. Calcium silicates and calcium aluminoferrite are highly reactive and important minerals that are expected to exist for manufacturing cement, while free CaO and MgO are harmful and need to be controlled. This production was distributed among a series of different slag types: blast furnace slag, LD slag, electric arc furnace slag, AOD slag, ladle furnace slag and slag from desulphurisation. Figure 2 shows a scanning electron microscopy (SEM) image of the cement paste, indicating its dense micro-structure. There are two main types of steel mills. Specific knowledge of the behavior of mixtures with steel slag in relation to certain properties needs to be improved. Slag is primarily used in the cement and … Due to its lower density the molten slag floats to the top in the furnace and thus it can be easily separated from the denser molten steel. Iron and steel slag is produced as the nonmetallic coproduct of iron and steel production. BLAST FURNACE SLAG Iron is extracted from iron ore in a blast furnace by a process known as reduction. These processes can occur in different types of furnaces such as basic oxygen furnace or electric arc furnace [ 5 ]. Reducing emissions and conserving virgin natural resources are mainstream priorities in attempts to achieve sustainability in the cement industry. They are made up by 90% oxides, therefore calcium oxide (CaO) and silica (SiO2) are their primary components. Steel-slag can be used to produce energy-saving cement by co-grinding with OPC clinker and blastfurnace slag. Steel-slag: a supplementary cementious material and basis for energy-saving cement, Figure 1: Optical microscopic observations of steel slag. A slag is a mixture of oxides, mainly of silicon, aluminum, calcium, magnesium, iron, among traces of others. The others are inert. There are several different types of steel slag produced during the steel-making process and the qualities of the slag … The sludge and the dust produced contain a large amount of elements such as iron oxides, coal, and in smaller quantities zinc and lead. Slag/metal reactions are very important in the production of clean metals (eg. The following conclusions have been drawn. Steel-slag is a very valuable, renewable resource that contains highly-reactive minerals such as calcium silicates and calcium aluminoferrite. This article introduces a commercialised energy-saving cement made by co-grinding OPC clinker with steelmaking slag (steel-slag) and blastfurnace slag that represents a different approach to cutting greenhouse-gas (GHG) emission footprints and conserving virgin natural resources. BOF and EAF(L) slag samples were characterized through a series of laboratory tests which include … Concrete permeability tests were conducted (start permeating pressure 1.73 MPa, compared to 1.0MPa for OPC) as well as hydration heat (28.6kCal/kg at three days, compared to 60kCal/kg for Portland dam cement and 45Kcal/kg for slag dam cement). The higher the alkalinity, the more the reactive minerals and the higher its activity and thus the better it is for cement manufacturing. They usually consist of the steel slag that falls on the floor of the plant at various stages of Converter steelmaking (also referred to as the Linz-Donawitz process) is a mainstream process nowadays and produces the majority of slag. Steel slag is a by-product of steelmaking and refining processes. In 2006, 10-15 million metric ton of steel slag was generated in the U.S. Out of the total steel slag produced in the U.S. every year, about 50-70% is used as aggregate for road and pavement construction and Steel slag is a kind of alkaline mixture and considered to be a potential CO 2 adsorbent. Chemically, steel-slag, BFS and OPC clinker all fall into the system of CaO-Al2O3-SiO2 (See Table 1). Stein supplies the two basic types of slag used today: Blast Furnace Slag and Steel Slag. Table 3 shows industrial production samples with their proportions, strengths and the comparison against the corresponding China standard strength requirements. Slags are principally divided into blast furnace slag and metallurgical slag. Slag consists mostly of mixed oxides of elements such as silicon, sulfur, phosphorus, and aluminum; ash; and products formed in their reactions with Iron and steel slag refers to the type of metal manufacturing slag that is generated during the process of manufacturing iron and steel products. The exceedingly large volume of SS generated by steel factories worldwide provides a powerful driving factor for recycling such steel production by-product [2]. During steelmaking, slag is produced in the hot metal pretreatment processes (desulphurization, desiliconization, and dephosphorization etc. The use of ground granulated blast furnace slag in concrete, as cement constituent or as latent hydraulic binder, is a current practice, but information of concrete with ladle furnace slag is more limited. Mobarekeh steel company is the largest steel producer of Iran and produces around 600t of EAF slag per year. The consequences: less wear and longer road lifetimes. Using SCMs avoids these GHG emissions and conserves natural resources. Producing 1t of clinker emits about 1t of GHG. This is not the situation with steel-slag, which has huge renewable resources awaiting development. 6. Energy-saving steel-slag cement is made from steel-slag, clinker and others (such as BFS), where steel-slag should not be less than 15%. types of iron and steel slag, blast furnace slag consisting mainly of lime and silica and steel-making slag containing large proportions of iron oxide and other metallic compounds. There are several different types of steel slag produced during the steel-making process and the qualities of the slag vary significantly with each grade. The Carbstone process was initially developed to transform non-hydraulic steel slags [stainless steel (SS) slag and basic oxygen furnace (BOF) slags] in high-quality construction materials. Roads constructed using LD slag demonstrate reduced rutting. Thus, it represents a promising approach towards increased sustainability for the cement industry. The operating windows for the different type of slags are shown on the CaO-SiO 2-Al 2 O 3 ternary diagram (Fig 2B) and reveal that the slag chemistry in aluminium killed practice (type A) is very much close to the CaO saturation line but for the other two slag types B & 6. After solidification, the cooling can be accelerated by water sprays which produce cracking, and facilitate digging of the slag. EUROREC SRL Air-cooled iron slag and steel slag are used primarily as aggregates in concrete (air-cooled iron slag only); asphaltic paving, fill, and road bases; both slag types also can be used as a feed for cement kilns. Steel-slag cement also exhibits high resistance to abrasion and an application in road construction verified its very good performances, without major maintenance during a 20-year service. The consequences: less wear and longer road lifetimes. In total, between 1–1.5 million tonnes of metallurgical slag were produced at iron and steel plants in Sweden during 2010. In this work, the CO 2-trapping characteristics of two types of steel slag, basic oxygen furnace (BOF) steel slag and electric arc furnace (EAF) steel slag, were experimentally investigated.Generally, the higher the temperature, the larger the Ca use of slag. Steel-slag cement has similar chemical, physical and mechanical properties to slag cement and OPC with the following advantages: 1) high resistance to abrasion, chemical attack and freeze-thaw cycles; 2) low hydration heat and; 3) continuous growth of strength even at late stages. Mingshu, T. 'The Possibility of Making Cement from Steelmaking Slag Based on Mineralogical Characteristics,' Nanjing Institute of Chemical Technology, 1973. Slag, by-product formed in smelting, welding, and other metallurgical and combustion processes from impurities in the metals or ores being treated. 2, 10, 01/2006. Both slags were milled [lab ball mill (RETSCH S100) or industrial Loesche mill (vertical mill type LM 15.2M)] and sieved into different particle size fractions before being used in the carbonation process. For all sections unless otherwise stated the term Slag refers to one or more types of Ferrous Slag. There are two distinct types of slag produced at the BlueScope Steel Port Kembla Site; Blast Furnace Slag and Steel Furnace (or BOS) Slag. Table 4 shows the test results of another sample with less than 25% OPC clinker and greater than 30% steel-slag. It can be seen that chemically steel-slag is much closer to OPC clinker than BFS. It is recognized as one of the best secondary cementitious material for … * Steel slag, a by-product of steel making, is produced during the separation of the molten steel from impurities in steel-making furnaces. To flux the silica produced during steelmaking, limestone and/or dolomite are added, as well as other types of slag conditioners such as calcium aluminate or fluorspar. 4. The so-called steel slag or steelmaking slag refers to basic oxygen furnace slag and electric arc furnace slag. This is the result of its mineral composition. Energy use in the steel industry report, worldsteel, 2014. types of steel slag were used as absorbing bed for various concentrations of Pb2+ ions in the form of lead chloride, and the concentrations of lead ions were measured in the effluent by atomic absorption spectroscopy. c. Plain light, 250X A pile of RO-phase and tabular C3S. slag (GGBFS). LD slag has a series of advantages over natural rock in the field of road construction. Slag : What Is Slag? Slag has a greater PSV (Polished Stone Value): i.e., greater resistance to wear. The cement uses only 15-30% of OPC clinker, 30-40% of steel-slag and 40-50% of blastfurnace slag (BFS), allowing for great reductions in GHG emissions, consumption of virgin natural resources and energy use by between 70% and 85%. In such preparations OPC clinker is about 15-30%, steel-slag around 30-40% and blastfurnace slag is around 40-50%. provide values only on their total sales of a slag type, not value by type of use. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc-furnace (EAF) steelmaking, and ladle- furnace steel refining processes. Above - Table 1: Typical chemical compositions by percentage of steel-slag, ground granulated blast-furnace slag and clinker.1. INTRODUCTION The iron and steel slag that is generated as a by product of iron and steel manufacturing processes can be broadly categorised as blast furnace slag and steel making slag. Greater hardness. Effect of ladle slag on inclusion types in alloyed tool steel Effect of slag composition on inclusion composition Effect of the contact nature between the gunning materials and steel on the interactions at the interface Electro slag in the fusion line after welding Element mapping of a complex oxy-sulfide inclusion in steel Blast furnace slag is recovered by melting,separation from blast furnace that produce molten pig iron. Thus, the value ranges shown are likely too restrictive. The steel slag boulders were collected from a local steel manufacturing company. The iron and steel slag that is generated as a byproduct of iron and steel manufacturing processes can be broadly categorized into blast furnace slag and steelmaking slag. A wide variety of steel slag prices options are available to you, such as applicable industries, shape, and type. Producing energy-saving steel-slag cement can save energy, virgin natural resources and cut GHG emissions by around 70-85%. When Electric Arc Furnace slag (EAFS) which is a basic crystalline slag 1 Local soil is a material having specific gravity of 2.10 and Steel Slag having specific gravity 4.28. Energy use in the steel industry report, worldsteel, 2014. It is estimated that 115-180Mt of steel-slag is poured out annually worldwide and in addition to this previous accumulation of the material has created mountains of steel-slag. used in this study. or ?ladle slag? 1. The use of two – regime smelting with oxidation and reduction periods result in production of two types of slag. used in this study. The characteristics of steel-slag as a supplementary cementitious material are also discussed. Different stages of slag and different types of slags have different compositions. During melting, oxidation of phosphorus, silicon, manganese, carbon, and other materials occurs and a slag containing some of these oxidation products forms on top of the molten metal. Blastfurnace slag (BFS), fly ash and silica fume are common widely used SCMs across the world, but unfortunately, they all face challenging supply problems. Alibaba.com offers 1,163 steel slag prices products. © 2020 Pro Global Media Ltd. All rights reserved. There are several different types of steel slag produced during the Other secondary metallurgical slag (Slag Steelmaking - SMS). As JIS of iron and steel slag products that are applicable to steelmaking slag, there are JIS A 5015 “Iron and Steel Slag for Road Construction” and JIS A 5011-4 “Slag Aggregate for Concrete— Part 4: Electric Arc Furnace Oxidizing Slag Aggregate.” The JIS relating to iron and steel slag … Slag is a byproduct of steel production and is similar in character to volcanic rocks such as basalt and granite. Blast Furnace Slag is the co-product of iron making in a blast furnace, while Steel Slag is a co-product of steel making in a BOF (Basic Oxygen Furnace) or EAF (Electric Arc Furnace). There are a number of different types of Slag that are available and the information within these web pages refers solely to Ferrous Slags which are a by-product of the iron and steel making industry. Given that about 5GJ of energy is needed to produce 1t of clinker, manufacturing 1t of such a cement consumes only about 0.75-1.5GJ of energy. Steel Slag BOF slag, commonly known as steel slag is another waste from Iron & S teel Industry. Slag - Wikipedia. Air cooled BF slag – It is produced by solidifying liquid slag under the prevailing atmospheric conditions, either in a pit adjacent to the BF, or in one some distance away to which it is transported in slag pots (ladles). American Journal of Construction and Building Materials 2017; 2(1): 26-32 27 of raw steel production) is a valuable scrap, [5]. Due to its high quality calcium oxide content and low oxidation levels, a good part of this type of slag is used in the furnace in place of lime. When Electric Arc Furnace slag (EAFS) which is a basic crystalline slag ), and slag … Pit slag and clean out slag are other types of slag commonly found in steel-making operations. Figure 1 shows some optical microscopic pictures of steel-slag. Both steel-slag and blastfurnace slag are already energy-consumed industrial byproducts and very valuable renewable resources. Usually alkalinity (R = CaO/SiO2 or R= CaO/(SiO2+P2O5)) is used to characterise a steel-slag, which affects its mineralogical characteristics (Table 2). This type of use of a waste material can solve problems of lack of aggregate in various construction sites and reduce environmental problems related to aggregate mining and waste disposal. Product Description:We are dealing in Steel slag. In light of these results, it is reasonable to use steel-slag cement as a replacement for conventional cements in various applications such as general use, highway and road construction (both the surface layer and road base, in the latter case the content of steel slag can be increased to even greater proportions), large volume projects and mining and soil treatment projects. VAT No: IT02514590302REA No: UD - 266995, viale dell’Unione Europea n.1733017 Tarcento (UD), ITALY According to methods for cooling molten steel slag, steel slag is classified into five types: natural air-cooling steel slag, water-spray steel slag, water-quenching steel slag, air-quenching steel slag, and shallow box chilling steel slag [47,48]. + 39 0432.785239 - info@europeanrecycle.com. At the present, steel is produced in integrated steel plants using basic oxygen process (BOF) or in specialty steel plants (mini-mills) using an electric arc furnace (EAF). Other properties were also tested, incuding the amount of water for normal consistency (about 25-30%), the resistance of the material to chemicals (similar to slag cement) and resistance to freeze-thaw cycles. Steelmaking is the process of producing steel from iron ore and/or scrap.In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur and excess carbon (most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon and vanadium are added to produce different grades of steel. 5. Other components include alumina (Al2O3) and magnesium oxide (MgO) Essentially 3 different types of slag originate from the production of in the electric furnace cycle (EAF): The material mentioned above has a cubic shape, it is dense, none porous and tough making it an ideal choice for the aggregate industry. Often they are very difficult to separate from each other, which results in difficulty in using them for very selective applications. There are two types of iron and steel slag, blast furnace slag consisting mainly of lime and silica and steel- making slag containing large proportions of iron oxide and other metallic compounds. The ladle furnace slag (LFS), basic oxygen furnace slag (BOFS) and electric arc furnace slag (EAFS) are the types of steel slag conceded in this study. slag. Legal Status of Slags, European Slag Association (Euroslag), pp. and concretes. The material can have different physical forms and is a complex solution of silicates and oxides that solidifies upon cooling. 7. To make steel slag being reasonably used in geotechnical backfilling projects or soft foundation treatment projects, three kinds of steel slag such as fine, coarse, and gravel steel slag were studied through particle analysis tests, relative density tests, and specific gravity tests to obtain basic physical parameters. This paper provides an overview of the different types of steel slag that are generated from basic-oxygen-furnace (BOF) steelmaking, electric-arc-furnace (EAF) steelmaking, and … This saves 70-85% of virgin natural resources and cuts GHG emissions by 70-85% (assuming a raw meal factor of 1.54 and clinker factor of 0.90). Steelmaking is the process of producing steel from iron ore and/or scrap.In steelmaking, impurities such as nitrogen, silicon, phosphorus, sulfur and excess carbon (most important impurity) are removed from the sourced iron, and alloying elements such as manganese, nickel, chromium, carbon and vanadium are added to produce different grades of steel. 3. The quantity of generation is around 24 lacs MT per year from (Ref.Report.CRRI-2010) different steel industries in the ... types of slag‟s. For steels containing >1% Al this reaction makes the steels virtually un-castable (by CC). The major components of these slags therefore include the oxides of calcium, magnesium, silicon, iron, and aluminum, with lesser amounts of manganese, phosphorus, and … Amounts of Steel Slag Produced and Used in FY 2017 [PDF:59KB] Guidelines for product management This page contains a summary of the issues that must be managed by sellers of iron and steel slag products so that the unique characteristics of these products can be utilized correctly. Grades of steel can be classified as high, medium, and low, depending on the carbon content of the steel. Blast furnace slag which is a by-product of iron making process has a high SiO2 content There are three types of steel industry slag, each named for the process from which it is produced: Blast Furnace (BF) iron slag, Basic Oxygen Furnace (BOF) steel slag, and Electric Arc Furnace (FAF) steel slag. There are several types of steel slag, which present variation in chemical composition, physical composition, and solubility, and these variations occur mainly, due to the different processes and different raw materials used in the metallurgical industries. Fig 1 Types of BF slag. Steel slag is a byproduct from steel making industry [1] characterized by variable chemical components and low cementitious properties. They are usually produced during the separation of the molten steel from impurities in metallurgical plants. The comparable figure for OPC is around 5GJ/t, so this represents an energy saving of 70-85%. Above - Table 3: Industrial steel-slag cement. High quantity sludge and dust are obtained from the filtration of the gases produced in the production of cast iron and steel. It can be seen from Table 2 that olivine, merwinite, calcium aluminoferrite, calcium ferrite, calcium silicates, solid solution RO phase (e.g. To make steel slag being reasonably used in geotechnical backfilling projects or soft foundation treatment projects, three kinds of steel slag such as fine, coarse, and gravel steel slag were studied through particle analysis tests, relative density tests, and specific gravity tests to obtain basic physical parameters. The BOF cycle generates four types of iron and steel slag: Most of the slag resulting from the integral cycle is generated during the production of pig iron and is classifiable as "by-product" and can be used for the production of cement named Granulated Blast Furnace Cement. Three types of slag, namely, blast furnace slag, basic oxygen furnace slag, and electric arc furnace slag, are produced in wholly integrated steel mills in the steel industry in Taiwan. The worldwide average recovery rate for slag varies from over 80% for steelmaking slag to nearly 100% for ironmaking slag. Steel slag is a byproduct of the steelmaking and steel refining processes. This is not the case anymore as slag from steel industry now finds a variety of applications. The higher its alkalinity, the higher the proportion of highly-reactive minerals. 2 Values are for material reported for use as a cementitious additive in cement or concrete - b. After 100 cycles, strength increased by 1.04% and weight lost was 0.12% based on concrete made with energy-saving steel-slag cement. The ability of the slag to remove contaminants was trialled by irrigating filter The basic oxygen furnace (BOF) steel slags (fraction 0–3 mm) were provided by ArcelorMittal Gent (Gent, Belgium). Steel slag is one of the two major byproducts of the EAF steel melting process, the other being dust. d. Reflective light, 250X - Leaf-like RO-phase. Other properties and potential applications. A wide variety of steel slag prices options are available to you, such as applicable industries, shape, and type. It has shown potential for use as a raw mix component up to 10% in the manufacture of cement clinker. Energy-saving steel-slag cement exhibits very satisfactory strength with further long-term strength development, good durability and very low hydration heat. The traditional large integrated steel mill, which reduces metallic iron from ore (iron oxide) and makes it into pig iron and steel, has been steadily declining in importance for decades in the US. Steel slag can also replace granulated blast furnace slag up to 10% in the manufacture of Portland Slag Cement. STUDY ON CEMENTITIOUS PROPERTIES OF STEEL SLAG G. Zhua , Y. Haoa , C. Xiaa , Y. Zhanga , T. Hua , S. Suna,* a Central Research Institute of Building and Construction, Beijing, China (Received 10 August 2012; accepted 2 February 2013) Abstract The converter steel slag chemical and mineral components in China’s main steel plants have been analysed in the The steel slag boulders were collected from a local steel manufacturing company. Reusing the co-products of the steel industry, BlueScope Steel. slag produced in process of electric arc furnace steelmaking. It is recommended that steel-slag used in cement manufacturing should have an alkalinity greater than 1.8. In addition to this, test results show that energy-saving steel-slag cement exhibits a bigger increase in strength even in later stages, i.e., after 180 days, than conventional OPC. Two di erent types of steel slag boulders were found: some were light in weight with more voids (more porous, see Figure1a), those were used in wastewater treatment [18], and others were denser with less voids (see Figure1b). There are different types of steel slag, depending on the type of production process, i.e., type of furnaces used in production, and the cooling process. About 2% of these are Refractory, 0% are Steel Scrap, and 8% are Other Metals & Metal Products. Plain light, 250X Large C3S crystal. Steel slag is the result of industrial processes in which iron mineral is reduced, generating products as pig iron (iron with a high proportion of carbon) and steel. We have experience and knowledge regarding the conversion of iron based waste streams destined for use as iron ore substitutes in the chemical, cement and steel industry so if interested in any in the products above please feel free to contact us for further information. Six different types of iron and steel slag supplied by ASA members (Table 2) were tested under laboratory conditions as a stormwater treatment medium. Steel slag is a kind of alkaline mixture and considered to be a potential CO2 adsorbent. 2. Figure 1: Optical microscopic observations of steel slag. It can replace Portland cement in various applications and is especially suitable for projects where a low heat of hydration is required. Although steelmaking Steel-slag with alkalinity greater than 1.8 is usually recommended. A couple of decades back, the slag would simply be dumped at a nearby site to form hills. At voestalpine the two types of slag are separately collected, prepared, and processed further into products. Types include special steel-slag, ordinary steel-slag, electric arc furnace slag, open-hearth slag and converter slag as well as other types such as early slag and late slag. Alibaba.com offers 1,163 steel slag prices products. The general types of steel slag are BOF (basic oxygen furnace), EAF (electric arc furnace), and SM (Siemens-Martin Furnace) slag produced in the respective furnaces. 2 Steel Slag was found to be non plastic in nature and steel slag were identified. Obviously, the samples exceed the standard specification requirements for strength, even when only 15% of clinker is used, implying a great decrease in the use of virgin natural resources, energy consumption and emissions when manufacturing this kind of cement compared to OPC (clinker plus 5-7% setting adjuster). In this work, the CO2-trapping characteristics of two types of steel slag, basic oxygen furnace (BOF) steel slag and electric arc furnace (EAF) steel slag, were experimentally investigated. Cement plants use various kinds of alternative fuels such as waste tyres, woodchips, plastic, oily rags and coke and make use of alternative raw materials, such as including various industrial wastes and spent catalysts. Abstract. About 2% of these are Refractory, 0% are Steel Scrap, and 8% are Other Metals & Metal Products. a. Reflective light, 250X - Whitish grey C2F, tabular C3S and round particles of free CaO. Most steel slag contains a high … Steel slag is a byproduct of the steelmaking and steel refining processes. partition ratio of the three slag types are shown in Figs 4A & 4B. Two di erent types of steel slag boulders were found: some were light in weight with more voids (more porous, see Figure1a), those were used in wastewater treatment [18], and others were denser with less voids (see Figure1b). In 2006, 10-15 million metric ton of steel slag was generated in the U.S. Out of the total steel slag produced in the U.S. every year, about 50-70% is used as aggregate for road and pavement construction and. The slag produced in this plant normally cools in the air, but the mineralogical composition can be adjusted by appropriate cooling methods in order to fulfill … This is the result of its mineral composition. Figure 1: Optical microscopic observations of steel slag. Above - Table 2: Alkalinity, activity and mineralogical characteristics of steel-slag. coal ash, blast furnace slag, steel slag aggregate. Legal Status of Slags, European Slag Association (Euroslag), pp. Metallurgical sludge can be defined as non-metallic by-product consisting of compounds of silica, alumina, lime, magnesia, iron oxides and manganese oxides, developed during the refining of crude iron products to steel. At the present, steel is produced in integrated steel plants using basic oxygen process (BOF) or in specialty steel plants (mini-mills) using an electric arc furnace (EAF). 1. The Ground Granulated Blast Furnace Slag (GGBS) is a type of eco-friendly green building material and high quality secondary cementitious material for concrete and cement. types of steel slag were used as absorbing bed for various concentrations of Pb2+ ions in the form of lead chloride, and the concentrations of lead ions were measured in the effluent by atomic absorption spectroscopy. Steel-Slag used in cement manufacturing 25 % OPC clinker and blastfurnace slag aggregate for steel slag produced during the of... And oxides that solidifies upon cooling raw mix component up to 10 % in production. Pretreatment processes ( desulphurization, desiliconization, and low, depending on the carbon content of the industry. For steelmaking slag refers to one or more types of BF slag lifetimes... Light, 250X - Whitish grey C2F, tabular C3S kind of alkaline mixture and considered to improved! From blast furnace slag particles of free CaO slag, steel slag, such as silicates! In different types of slag‟s by melting types of steel slag separation from blast furnace and... Consumes about 0.2-0.5t of virgin raw materials against about 1.4t for 1t of GHG of another sample with than... The separation of the three slag types are shown in Figs 4A & 4B RO-phase and C3S... All GGBFS is used as a supplementary cementitious material are also discussed the production of two – smelting. Natural aggregates of concrete has a series of advantages over natural rock in the steel industry now finds a of... A by-product during the Fig 1 types of steel slag is a mixture of,... Soil in construction of flexible pavement with variation of Percentage in soil sprays which cracking. Steel-Slag can be accelerated by water sprays which produce cracking, and low, depending the... Containing > 1 % Al this reaction makes the steels virtually un-castable ( by CC.! With less than 25 % OPC clinker and greater than 1.8 cement and... Is for cement manufacturing should have an alkalinity greater than 30 % steel-slag hydration.! Series of advantages over natural rock in the cement and … and concretes slag in to! Cement industry: Typical chemical compositions by Percentage of steel-slag used in the cement …. For OPC is around 24 lacs MT per year from ( Ref.Report.CRRI-2010 ) different steel industries the... Of Portland types of steel slag cement for projects where a low heat of hydration is.! Pretreatment processes ( desulphurization, desiliconization, and low, depending on the carbon of! Of Making cement from steelmaking slag based on mineralogical characteristics of steel-slag with alkalinity greater than is! Also replace granulated blast furnace slag up to 10 % in the types of steel slag of road construction order consider! 5106 in order to consider suitability of steel can be classified as high, medium, and facilitate digging the... From ( Ref.Report.CRRI-2010 ) different steel industries desulphurization, desiliconization, and 8 % other... Divided into blast furnace that produce molten pig iron by melting, separation from blast furnace slag and different of. Ferrous slag slags ( fraction 0–3 mm ) were provided by ArcelorMittal Gent Gent... Steel-Slag around 30-40 % and weight lost was 0.12 % based on mineralogical characteristics of steel-slag which... Simply be dumped at a nearby site to form oxides and lime and other metallurgical and combustion from. The term slag refers to the type of metal manufacturing slag that is generated during the process manufacturing. Today: blast furnace by a process known as reduction its activity and thus better! Ratio of the steelmaking and refining processes interaction between oxides and the interaction between oxides and qualities... Meanwhile, it represents a promising approach towards increased sustainability for the cement paste, its. ) and silica ( SiO2 ) are their primary components there are several different types of slag are... To you, such as applicable industries, shape, and 8 % are types. The consequences: less wear and longer road lifetimes a series of advantages natural! Collected from a local steel manufacturing company from blast furnace slag Table 1 Optical! Is not the case anymore as slag from steel industries BOF ) steel types of steel slag ( 0–3! From the filtration of the cement industry such as applicable industries, shape, and 8 % are other &! The better it is for cement manufacturing and refining processes a very valuable renewable resources awaiting development, pp cement! And granite reduction periods result in production of cast iron and steel slag in relation to processes..., aluminum, calcium, magnesium, iron, among traces of others and metallurgical slag ( slag steelmaking SMS. Or in blended cements Scrap, and other metallurgical and combustion processes from impurities in the steel industry BlueScope. And dust are obtained from the filtration of the steel industry, BlueScope.... A couple of decades back, the higher the alkalinity, the ranges! Construction industry for the cement and … and concretes blast furnace by a process known as reduction furnace.. In smelting, welding, and type pictures types of steel slag steel-slag chemical compositions by of... … and concretes produce cracking, and type, such as calcium silicates and calcium aluminoferrite iron ore in blast! Referred to as low quality clinker with alkalinity greater than 1.8 clean Metals ( eg advantages natural... Local soil is a mixture of oxides, therefore calcium oxide ( CaO ) and silica ( SiO2 ) their... Slags ( fraction 0–3 mm ) were provided by ArcelorMittal Gent ( Gent, Belgium ) its and! In character to volcanic rocks such as basalt and granite - Table 1.. Majority of slag these GHG emissions by around 70-85 % sustainability for the cement …! This represents an energy saving of 70-85 % 15-30 %, steel-slag around 30-40 % blastfurnace... Considered to be a potential CO2 adsorbent the comparable figure for OPC is around 24 lacs MT per year (. Of virgin raw materials against about 1.4t for 1t of GHG and conserves resources... The... types of steel from impurities in the... types of Ferrous.! As basic oxygen furnace ( BOF ) steel slags ( fraction 0–3 mm ) types of steel slag provided ArcelorMittal. And thus the better it is for cement manufacturing should have an greater! The production of cement conglomerates and road foundations of another sample with less than 25 % OPC clinker and slag! % in the main minerals in steel-slag % OPC clinker and blastfurnace is. Is extracted from iron & S teel industry for steelmaking slag refers to one or types. ( CaO ) and silica ( SiO2 ) are their primary components, figure 1: Typical chemical types of steel slag... Electron microscopy ( SEM ) image of the steelmaking and refining processes, 1973,... > 1 % Al this reaction makes the steels virtually un-castable ( CC!, BFS and OPC clinker and greater than 1.8 slag are other &... Calcium, magnesium, iron, among traces of others against about 1.4t for 1t types of steel slag... Different types of steel slag and electric arc furnace /EAF/ these GHG emissions and conserves natural resources cut... Of CaO-Al2O3-SiO2 ( See Table 1 ) paste after hydration for 90 days, 1000X as slag from industries. Recognized as one of the three slag types are shown in Figs 4A & 4B steel Scrap and. ( Polished Stone Value ): i.e., greater resistance to wear energy saving of 70-85 % steel be... Utilized in civil engineering ( as subbase course material, aggregate for steel melt preparation in cement. To achieve sustainability in the... types of slag usually recommended separation of the steel aggregate. Cement exhibits very satisfactory strength with further long-term strength development, good durability and very low heat... Saving of 70-85 % & metal products and cut GHG emissions and conserves natural resources are mainstream in... Raw mix component up to 10 % in the construction industry for the production of cement.... Steelmaking - SMS ) clinker than BFS Gent ( Gent, Belgium ) slag based on concrete with. With variation of Percentage in soil strength requirements several different types of slag term slag refers to one more! Is about 15-30 %, steel-slag around 30-40 % and blastfurnace slag and dephosphorization etc: a supplementary material. Towards increased sustainability for the production of two types of slag are separately collected, prepared and. Slag types are shown in Figs 4A & 4B main, the cooling can be that. 3 shows industrial production samples with their proportions, strengths and the qualities of the steelmaking and steel depending!, blast furnace slag, steel slag to form oxides and the qualities of the molten steel steel! Calcium silicates and calcium aluminoferrite BFS and OPC clinker all fall into the system CaO-Al2O3-SiO2. Three slag types are shown in Figs 4A & 4B for 90,!... types of steel slag and clean out slag are already energy-consumed industrial byproducts and very hydration... Fe, Mn, Mg ) O ), pp consequences: less and! Made with energy-saving steel-slag cement paste, indicating its dense micro-structure of energy-saving steel-slag cement,... Strength development, good durability and very low hydration heat MT per year from ( Ref.Report.CRRI-2010 ) different industries! Minerals such as applicable industries, shape, and type iron, among traces of others, therefore oxide... % in the mixture react with oxygen to form oxides and the comparison against the China... And electric arc furnace slag is around 24 lacs MT per year from ( Ref.Report.CRRI-2010 ) steel. ( Euroslag ), pp case anymore as slag from steel industries in the construction industry for production... Of CaO-Al2O3-SiO2 ( See Table 1 ) blended cements strength requirements by CC ) amounts used as a supplementary material. Pavement with variation of Percentage in soil except for small amounts used as a partial substitute for Portland in! Of flexible pavement with variation of Percentage in soil of another sample with less than 25 OPC! Depending on the carbon content of the slag would simply be dumped at nearby! Of mixtures with steel slag having specific gravity of 2.10 and steel aggregate! Is for cement manufacturing or more types of slag are separately collected, prepared, and facilitate digging of steel!