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In secondary route of steelmaking, production through induction melting furnace contributes about 31 % of India's total steel production. The main raw materials used are steel scrap, cast iron and sponge iron. In India, majority of the induction furnaces are operated using acidic lining of silica based ramming mass to produce structural steel …
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This paper investigated the potential use of basic oxygen furnace steel slag (BOF SS) as a single aggregate in alkali-activated mortars (AAMs) for building applications.
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The composition of the blast furnace slag changes depending on the ores, the type of fuel used and impurities in the coke, when it is used, among other factors (Oner and Akyuz 2007). Slag from industries that use charcoal-fueled blast furnaces generally produce acidic slag while slag from coke-fired furnaces generate basic slag.
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Ground granulated blast furnace slag is an eco-friendly material with regard to its production process and usage. In this study, slag cement (SC) is used to prepare different slag cement mortar (SCM) mixes to study mortar microstructure perspectives, physiochemical properties, mechanical properties and durability …
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Nickel smelting slag contains valuable metals including nickel and copper. Failure to recycle these metals wastes resources, and disposal of nickel slag in stockpiles results in environmental pollution. Nickel slag recycling is important, and metals can be recovered from slag by flotation. However, considering the complex forms in which …
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GGBS concrete (Global Resources-INDIA) It is a by-product from the blast furnace which is used to make iron. These furnaces operate at a temperature above 1500 degree Celsius and are fed with iron ore, coke and limestone. The iron ore is reduced to iron in that temperature and all other materials form a slag and floats on the top of iron.
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The major share of solid waste is shared by the blast furnace slag. In Indian condition 300–540 kg of slag is generated for producing one ton of pig iron . Along with …
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Calculations Relating to Concrete and Masonry. Sidney M. Levy, in Construction Calculations Manual, 2012 5.4.5 Ground Granulated Blast-Furnace Slag. Although portland blast-furnace slag cement, which is made by intergrinding the granulated slag with portland cement clinker (blended cement), has been used for more than 60 years, …
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Ladle slag is a byproduct formed during the ladle refining stage of steel making. It is a dusty material that has been considered industrial waste. Technical …
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1.4.2. The basic oxygen furnace (BOF) The BOF process forms part of the primary steel production route, which also incorporates the BF process. In a BF, the iron ore, limestone and fuel are continuously supplied through the top section of the furnace, while heated air is forced into the lower section (Geerdes, Toxopeus, & Van der fliet, 2009).The end …
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The dissolution of CO 2 in the aqueous ammonium salt solution is the speed-control part of the Slag2PCC process (c.f., Equation 2). Results reported that 4–5 mm CO 2 bubbles dissolved when they rose ~1.6–1.9 m in an unmixed water column (Legendre and Zevenhoven, 2016, 2017).Recently, Zevenhoven et al. (2019) proposed that properly …
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The slag produced at blast furnace during pig iron manufacturing is called blast furnace slag. The slag produced at steel melting shop is known as steel slag. Slag output …
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OBJECTIVES. To Study existing arrangement of slag use at Jadhao Steel & Alloys. Collect mechanical information for slag use in steel commercial enterprises. To different metal …
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In the Bhilai Steel Plant, India, LD slag was used in the blast furnace but later discontinued due to its high sulfur and phosphorus content . However, the slag is not suitable in cement making due to the …
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Depending on the used production technology, the steel slag can be divided into a basic oxygen steel slag, an electric arc furnace slag and a ladle furnace slag (De Brito and Saika, 2013). The steel slag is used as a secondary cementitious binder, or aggregates for road construction (Sheen et al., 2013; Manso et al., 2004).
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Granulated slag of Sterlite Industries India Limited was used to recover iron values (Premchand et al., 2000) in a 50 KVA furnace. Eighty five percent iron recovery was obtained from a charge of 10 kg granulated copper slag mixed with 2.5 kg lime and 600 gm graphite powder smelted for 1 h duration using 45 kW h power.6.2.
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A large blast furnace has a slag content of 250–350 kg per ton of iron, and a small blast furnace has a slag content of 450–550 kg per ton of iron. The main composition range of general blast furnace slag is: calcium oxide for 35–44%, silica for 32–42%, alumina for 6–16%, and magnesium oxide for 4–12%. Blast furnace gas is also one ...
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Ladle furnace (LF) slag can be used as a replacement to synthetic fluxes owing to its chemical and mineralogical compositions. Valorization of LF slag helps in sustainable steelmaking and also ...
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A description is presented of a technology for recycling liquid slags in a grated drum packed with balls. The article examines a drum design with movable grates that makes it possible to recycle melts of any viscosity or fluidity and melts that contain solid lumps of material. The control system of the equipment provides for solution of the main …
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A Slag Crusher Machine is a machine used to break and process slag into smaller pieces. It is a piece of equipment that uses mechanical energy to break the slag into pieces, and then the pieces are separated into different sizes. The size of the processed slag depends on the type of Slag Crusher Machine used.
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slag produced at steel melting shop is known as steel slag. Slag output obtained during pig iron and steel production is variable and depends mainly on composition of raw …
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E. Crossin, The greenhouse gas implications of using ground granulated blast furnace slag as a cement substitute, Journal of Cleaner Production, 95 (2015) 101â€"108. [29] D. M. Sadek, Effect of cooling technique of blast furnace slag on the thermal behavior of solid cement bricks, Journal of Cleaner Production, 79 (2014) 134â€"141 ...
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The aim of this study is to investigate the utilization possibilities of steel slags, basic oxygen furnace (BOF) and electric arc furnace (EAF) slags, as backfill material in coastal structures.
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Recycling ladle furnace (LF) slag helps in sustainable steel making and reduces steel production costs. This paper focuses on recycling Si/Mn/Al-killed LF slag …
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The three most important trends for slag recycling relate to further investments in granulation plants for blast furnace slag, the increase in slag trading with separate slag …
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The goals of slag recycling efforts are both environmental and economic. Reprocessed slag can replace other more costly ingredients used to make building materials. Recycling slag minimizes waste and disposal costs, reduces energy use, extends furnace life, and lowers the amount of additives needed to make slag.
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Steel slag is the by-product during the separation of molten steel from impurities in the steel-making furnace. The basic oxygen furnace (BOF) slag, electric arc furnace (EAF) slag, and ladle furnace (LF) slag are three major types of SS produced in the steelmaking processes.As drawn in Fig. 2, BOF slag and EAF slag are both …
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When crushed and sized properly, slag can be sold and used as valuable material in many different ways, for example, as aggregates. However, since slag usually contains uncrushable objects, it is typically considered a challenging feed material for conventional jaw crushers. ... Equipment and services for slag crushing. Product {{ title ...
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