05-04-2010· Steel-making slag is generally considered unstable for use in concrete but has been commercially used as a road aggregate for over 90 years and as an asphalt aggregate since 1937. Steel-making slag can contain valuable metal and typical processing plants are designed to recover this metal electromagnetically.
Fig 1 Processing of steelmaking slag. As steelmaking slag is formed, it is in a molten or red-hot state at temperatures ranging from 1,300 deg C to 1,700 deg C. This slag is immediately subjected to the cooling process upon removal. Usually, this is performed in a cooling …
Utilization in the sintering process – Steelmaking slag with CaO content normally above 50 % can be used as flux in the sintering process, partially replacing the lime and limestone. The slag addition can improve the quality, reduce fuel consumption due to the heat liberation of Fe and FeO oxidation reaction, and decrease the cost of sinter ore.
process for making a hardening agent for weak soil or . a process for making a hardening agent for weak soil or sludge from steelmaking slag. about 5 30 wt. % of specified reforming agent selected from the group consisting of one or more of silicate rock, mineral, calamine, glass waste, foundry waste sand, waste brick, red mud, volcanic slag, iron oxide and mixtures thereof is added to a ...
US3318687A - Treatment of slag in the process of making steel - Google Patents Treatment of slag in the process of making steel Download PDF Info Publication ... slag steel ferrite alumina furnace Prior art date 1964-04-30 Legal status (The legal status is an assumption and is not a legal conclusion.
Slag generated during steel making in Basic Oxygen Furnace (BOF) is one of the major waste materials in an integrated steel plant. Generation rate of Steelmaking (LD) slag is 150-180 kg per ton of ...
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.
Basic oxygen steelmaking (BOS, BOP, BOF, or OSM), also known as Linz–Donawitz-steelmaking or the oxygen converter process is a method of primary steelmaking in which carbon-rich molten pig iron is made into steel.Blowing oxygen through molten pig iron lowers the carbon content of the alloy and changes it into low-carbon steel.The process is known as basic because fluxes of burnt lime or ...
Utilization in the sintering process – Steelmaking slag with CaO content normally above 50 % can be used as flux in the sintering process, partially replacing the lime and limestone. The slag addition can improve the quality, reduce fuel consumption due to the heat liberation of Fe and FeO oxidation reaction, and decrease the cost of sinter ore.
BOS Slag. Process. When molten iron (referred to as “hot metal”) from the blast furnace is to be converted into steel, the main tasks are the removal of carbon, silicon and phosphorus. The LD (Linz-Donawitz) process is by far the most widely used, and takes its …
04-04-2012· Common slag treatment process in Japan is shown in Figure 4.4.12 [81].About 80% [79] of BF slag is quenched by water spray and the quenched BF slag sand produced is used mainly for cement, concrete and civil engineering resources.The rest is cooled by field air cooling and the slow cooled slag is used as a resource for road construction, concrete coarse aggregate, and so on.
US977819A US56187210A US1910561872A US977819A US 977819 A US977819 A US 977819A US 56187210 A US56187210 A US 56187210A US 1910561872 A US1910561872 A US 1910561872A US 977819 A US977819 A US 977819A Authority US United States Prior art keywords iron slag phosphate process tricalcium Prior art date 1910-05-17 Legal status (The legal status is an assumption and is …
US3318687A - Treatment of slag in the process of making steel - Google Patents Treatment of slag in the process of making steel Download PDF Info Publication ... slag steel ferrite alumina furnace Prior art date 1964-04-30 Legal status (The legal status is an assumption and is not a legal conclusion.
01-10-2020· Slag is a byproduct of metal smelting, and hundreds of tons of it are produced every year all over the world in the process of refining metals and making alloys.Like other industrial byproducts, slag actually has many uses, and rarely goes to waste. It appears in concrete, aggregate road materials, as ballast, and is sometimes used as a component of phosphate fertilizer.
Slag generated during steel making in Basic Oxygen Furnace (BOF) is one of the major waste materials in an integrated steel plant. Generation rate of Steelmaking (LD) slag is 150-180 kg per ton of ...
19-10-2020· Steel - Steel - Primary steelmaking: In principle, steelmaking is a melting, purifying, and alloying process carried out at approximately 1,600° C (2,900° F) in molten conditions. Various chemical reactions are initiated, either in sequence or simultaneously, in order to arrive at specified chemical compositions and temperatures.
SYNOPSIS: Blast furnace slag has been applied for cement making in the early of 1900s. Currently, almost all blast furnace slag is utilized for various purposes, such as cement making, road ...
BF-BOF steelmaking process comes from coke. Even though roughly 40% of the sulphur in coal is removed in the coking process, typical sulphur levels in coke remain around 0.5%. Iron ore contains typically 0.01% sulphur and is only a minor source of sulphur in the steelmaking process [2,8]. In the BF-BOF process there are four process steps where
04-04-2012· Common slag treatment process in Japan is shown in Figure 4.4.12 [81].About 80% [79] of BF slag is quenched by water spray and the quenched BF slag sand produced is used mainly for cement, concrete and civil engineering resources.The rest is cooled by field air cooling and the slow cooled slag is used as a resource for road construction, concrete coarse aggregate, and so on.
BOS Slag. Process. When molten iron (referred to as “hot metal”) from the blast furnace is to be converted into steel, the main tasks are the removal of carbon, silicon and phosphorus. The LD (Linz-Donawitz) process is by far the most widely used, and takes its …
US977819A US56187210A US1910561872A US977819A US 977819 A US977819 A US 977819A US 56187210 A US56187210 A US 56187210A US 1910561872 A US1910561872 A US 1910561872A US 977819 A US977819 A US 977819A Authority US United States Prior art keywords iron slag phosphate process tricalcium Prior art date 1910-05-17 Legal status (The legal status is an assumption and is …
01-10-2020· Slag is a byproduct of metal smelting, and hundreds of tons of it are produced every year all over the world in the process of refining metals and making alloys.Like other industrial byproducts, slag actually has many uses, and rarely goes to waste. It appears in concrete, aggregate road materials, as ballast, and is sometimes used as a component of phosphate fertilizer.
Slag is not a random product, but rather a consequence of the Linz-Donawitz process, which uses steel as well as LD slag. The slag is separated from the crude steel, separately processed, and its chemical composition analyzed. At the end of the process, the main components of the slag are iron oxide, calcium oxide, and silicon dioxide.
Slag generated during steel making in Basic Oxygen Furnace (BOF) is one of the major waste materials in an integrated steel plant. Generation rate of Steelmaking (LD) slag is 150-180 kg per ton of ...
Wet Process Of Slag Sand Making Flotation separation process is mainly used for nonferrous mineral processing. There are mainly copper separation production line, zinc separation production line, plumbum separation productionline,
Refining process in oxygen converter produces converter slag as a by – product, that has relatively stabile properties and composition. Different situation is related to slag produced in process of electric arc furnace steelmaking. Its character and composition are in close relation to the processes used for steel melt preparation in the
SYNOPSIS: Blast furnace slag has been applied for cement making in the early of 1900s. Currently, almost all blast furnace slag is utilized for various purposes, such as cement making, road ...
BF-BOF steelmaking process comes from coke. Even though roughly 40% of the sulphur in coal is removed in the coking process, typical sulphur levels in coke remain around 0.5%. Iron ore contains typically 0.01% sulphur and is only a minor source of sulphur in the steelmaking process [2,8]. In the BF-BOF process there are four process steps where
