slag steel converter

  • Types of iron and steel slag : NIPPON SLAG ASSOCIATION

    Converter slag In the same way as air-cooled blast furnace slag, converter slag is cooled slowly by natural cooling and water spray in a cooling yard. It is then processed and used for various iron and steel slag (converter) applications. Approximately 110 kg of slag is generated for each ton of converter steel. Electric arc furnace slag

  • Role of Slag in Converter Steelmaking IspatGuru

    Aug 01, 2015· If the slag to steel mass ratio at the end of a converter blow varies within 0.08 to 0.1, the slag to steel volume ratio rises from almost zero in the beginning of the blow to 0.20/0.25 towards the end of the blow. In general, slag is considered to dampen metal ejections (spitting) and dust formation from the converter during the blow.

  • Basic oxygen steelmaking Wikipedia

    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

  • Converter Slag an overview ScienceDirect Topics

    Steel slag may also be referred to as steel furnace slag, steel making slag, steel converter slag, and in this chapter may simply be referred to as slag. Steel slag is a calcium-rich heterogeneous solid consisting of several solid phases. The calcium in the slag can exist in multiple forms: dicalcium silicate, calcium oxide, calcium carbonate

  • Steel converter slag as an oxygen carrier for chemical

    Chemical Looping Gasification (CLG) is a dual fluidized bed gasification technique where an oxygen carrier is used as bed material instead of sand. An

  • Steel converter slag as an oxygen carrier in a 12 MWth CFB

    Sep 01, 2019· Steel converter slag, LD-slag, LD-stone or Basic Oxygen Furnace (BOF) slag is a by-product from the basic oxygen steel production process, also called Linz–Donawitz process. In this process, iron is converted to steel by the addition of fluxes, alloying additives and scraps under oxidative environment ( Roudier et al., 2013 ).

  • Converting (metallurgy) Wikipedia

    Converting is a type of metallurgical smelting that includes several processes; the most commercially important form is the treatment of molten metal sulfides to produce crude metal and slag, as in the case of copper and nickel converting. A now-uncommon form is batch treatment of pig iron to produce steel by the Bessemer process. The vessel used was called the Bessemer converter.

  • KOBM Slag ASA Australasian (iron & steel) Slag Association

    A KOBM Oxygen Steel Converter vessel is used. The vessel is charged with the molten iron from the melter and a small proportion of scrap before refining begins using a top lance and bottom blown tuyeres to produce. The remaining steel making operation follows conventional practices, apart from the chemistry of the slag, which again differs from

  • Bessemer process Wikipedia

    The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace.The key principle is removal of impurities from the iron by oxidation with air being blown through the molten iron. The oxidation also raises the temperature of the iron mass and keeps it molten.

  • Steel Slag an overview ScienceDirect Topics

    Steel slag is an industrial byproduct obtained from the steel manufacturing industry. It is produced in large quantities during steel-making operations that use electric arc furnaces. Steel slag can also be produced by smelting iron ore in a basic oxygen furnace.

  • Steel Converter Slag as a Raw Material for Precipitation

    Aug 01, 2008· In this work we study the possibility of utilizing steel converter slag, a byproduct of steel manufacturing, for production of pure calcium carbonate. The dissolution of calcium from steel converter slag by using acetic acid as a solvent and the precipitation of pure calcium carbonate from the resulting solution were experimentally investigated.

  • Recycling and utilization of high volume converter steel

    Sep 01, 2020· Converter steel slag is produced in large quantities as by-product of primary steel-making, which is mainly landfilled or used as an aggregate The high reactivity of converter steel slag with CO 2 makes it an ideal material for CO 2 capture by forming calcite even at ambient temperature and pressure. This reaction can also be used to for the production of green building materials.

  • KOBM Slag ASA Australasian (iron & steel) Slag Association

    A KOBM Oxygen Steel Converter vessel is used. The vessel is charged with the molten iron from the melter and a small proportion of scrap before refining begins using a top lance and bottom blown tuyeres to produce. The remaining steel making operation follows conventional practices, apart from the chemistry of the slag, which again differs from

  • Steel Basic oxygen steelmaking Britannica

    When slag appears, the converter is rotated all the way back, and the slag is poured over the converter mouth into a slag pot. For better separation of slag from liquid steel, special taphole-closing devices such as refractory balls or nitrogen jets, as well as slag-detection devices, are often used.

  • (PDF) Steel slag in China: Treatment, recycling, and

    Steel slag is the main waste product in the steelmaking process. Because of its stone composition and technical properties, it can be reused as raw material in steel plants and can serve as a

  • Slag splashing technique in converter operation IspatGuru

    Mar 24, 2013· Slag splashing technique in converter operation. satyendra; March 24, 2013; 3 Comments ; lining life, MgO saturation, slag conditioning, slag corrosin, slag splashing, slag viscosity,; Slag splashing technique in converter operation. It is known that the wear of refractory lining in an oxygen steelmaking converter for the production of liquid steel is a factor which greatly influences the

  • Chemical characteristics of iron and steel slag : NIPPON

    The primary components of iron and steel slag are limestone (CaO) and silica (SiO 2).Other components of blast furnace slag include alumina (Alsub>2 O 3) and magnesium oxide (MgO), as well as a small amount of sulfur (S), while steelmaking slag contains iron oxide (FeO) and magnesium oxide (MgO).In the case of steelmaking slag, the slag contains metal elements (such as iron) in oxide form

  • Steel Ladle metallurgy Britannica

    Steel Steel Ladle metallurgy: The carrying out of metallurgical reactions in the ladle is a common practice in practically all steelmaking shops, because it is cost-efficient to operate the primary furnace as a high-speed melter and to adjust the final stone composition and temperature of the steel after tapping. Also, certain metallurgical reactions, for reasons of equipment design and

  • Steelmaking Slag IspatGuru

    Apr 12, 2013· Alkalinity Unlike lime, steel making slag does not absorb CO2 from the air and convert back to relatively insoluble limestone. This is an important property. This is an important property. Because of this property steelmaking slag, when left outside exposed to the atmosphere for years, achieves high levels of alkalinity upon dissolution.

  • UDC 669 . 054 . 82 Nippon Steel Corporation

    and composition adjustment. The yield of iron/steel slag is about 300 kg/t-p per ton of pig iron for blast furnace slag and about 100-150 kg/t-s per ton of molten steel for steelmaking slag. In Japan, some 40 million tons of iron/steel slag are presently produced annu-ally (Table 1). Technology UDC 669 . 054 . 82 : 669 . 184 . 244 . 66

  • Iron and Steel Slag Market To Reach US$29.896 Bn By 2025

    Iron and Steel Slag Market Iron and Steel Slag Market (Process Blast Furnace Slag (Granulated Blast Furnace Slag and Air Cooled Blast Furnace Slag) and Steelmaking Slag (Converter Slag and Electric Arc Furnace Slag); Application Building and Construction, Railways, and Fertilizers) Global Industry Analysis, Size, Share, Growth, Trends, and Forecast 2017 2025

  • Quality of Lime for Steelmaking in Converter IspatGuru

    Also in this case, especially with low iron oxide contents in the slag, the phosphorus contents in the steel are reduced by the use of the properly calcined lime. With the use of a properly calcined lime, it is possible to reduce the lime additions in the converter and thus to have better control of slag and temperatures in the converter.

  • Generation of iron and steel slag : NIPPON SLAG ASSOCIATION

    Converter slag is the oxidized material that is generated when lime and other auxiliary materials are added and oxygen is blown onto the pig iron in order to remove carbon, phosphorous, sulfur, and other components from the pig iron and refine it to produce strong steel.

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