Assessment of hydrogen direct reduction for fossil-free ...

    Dec 01, 2018 · Scrap charged to the EAF contains 95% iron and 5% inert substances. The liquid steel product contains only iron, whereas all other elements leave the EAF through the slag. Heat capacities of inert substances have been assumed equal to the main component of the corresponding flow. Download high-res image (331KB) Download full-size image; Fig. 1 ...

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    MASS AND HEAT BALANCE OF STEELMAKING IN BOF AS .

    the liquid steel in BOF at the end of the blow and the amount of scrap should be added to BOF to cool the path. 2.2.1 Heat Balance for BOF The reference temperature of the system is taken as the temperature of the input hot metal which is 1256oC. All the heats of oxidation reactions and heat capacities at constant pressure (C p) are assumed to

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    Steel Dynamics, Inc. - Operations

    Metals Recycling . Ferrous Resources. Fabrication

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    Steel Scrap - an overview | ScienceDirect Topics

    Liquid iron: 1% addition ... For mild steel scrap the rate of consumption is 6.6–9.0 kg/A/year, and for cast iron the rate is 0.9–9.0 kg/A/year. Steel in the form of old railroad line, pipes and structural sections is used. The rate of consumption of steel scrap is generally uniform. The material is mostly available in the form of long and ...

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    Steelmaking - Wikipedia

    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. ...

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    Basic Oxygen Furnace Steelmaking - Steel Industry

    Basic Oxygen Furnace (BOF) steel making or Basic Oxygen Furnace Steelmaking (BOS) or Linz-Donawitz-Verfahren steelmaking or the oxygen converter process is a method in which both molten pig iron and steel scrap are converted into steel with the oxidizing action of oxygen blown into the melt under a basic slag.

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    Metal List with Glossary of Common Scrap Metals

    Scrap Steel with a lighter gauge and cannot include Light Iron or Sheet Metal. Automobiles Scrap Autos are to be prepared by a licensed "auto recycler," once processed free of gas tank, fluids, and battery it is densified or "crushed" for transportation purposes.

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    STS making - Iron and steelmaking III: Other steelmaking ...

    A stainless steel is one of important steel products which contains high amount of chrome and nickel. The stainless steel has very good corrosion resistance due to chrome. The stainless steel is typical produced not from blast furnace-BOF route but it is produced from electric arc furnace process by collecting the scrap which was stainless steel.

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    FACT SHEET Steel industry co-products

    furnace to remove impurities from the iron ore, steel scrap, and other ferrous feeds. The slags protect the liquid metal from outside oxygen and maintain temperature by forming a lid. As the slags are lighter than the liquid metal, they float and can be easily removed.

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    Steel - Essential Chemical Industry

    Figure 7 Illustrating the Electric Arc Process which uses scrap steel to produce pure steel very efficiently. The furnace is a circular bath with a movable roof through which three graphite electrodes are raised or lowered. These electrodes are massive, often 6 m high and 4 m wide, and the furnace can hold over 100 tonnes of liquid steel. After ...

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    Industry Group 331 - Primary Metals and Basic Steel Products

    This industry group (SIC 331) is involved in manufacturing steel from hot metal and pig iron from iron ore, and iron and steel scrap. After the production of liquid steel, the product is initially cast into slab, billet or bloom shapes which is then hot rolled into such products as plates, sheets, strips, rods, bars, and tubing.

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    Steel Glossary | Glossary of Terms | Platts

    In steelmaking this is the collective term for the principal raw material inputs to a blast furnace (iron ore, coke, limestone), electric arc furnace (scrap and/or direct reduced iron) and basic oxygen furnace or steel converter (liquid pig iron, scrap).

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    Kinetics of Scrap Melting in Liquid Steel - ResearchGate

    Kinetics of Scrap Melting in Liquid Steel JIANGHUA LI, GEOFF BROOKS, and NIKOLAS PROVATAS The melting rate of steel bars with various sizes, shapes, and initial temperatures in a 70 kg liquid steel

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    AISI | Electric Arc Furnace Steelmaking

    according to size and density to promote the rapid formation of a liquid pool of steel in the hearth while providing protection ... power to the scrap and a liquid pool of metal will form in the furnace hearth At the start of melting the arc is erratic and ... AISI | Electric Arc Furnace Steelmaking ...

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    Scrap Specifications 2010 - dofasco.arcelormittal

    New and old steel sheet scrap, clippings, steel racking, skeleton plate hydraulically compressed into a bundle. Galvanize steel scrap, tube and pipe is acceptable May include hydraulically compressed mandrel wound bales. painted material, minimal re-bar. Must not contain 1. Obsolete scrap i.e., automotive parts, fencing, municipal scrap 2.

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    WHAT IS STEEL MAKING PROCESS: BRIEFLY EXPLAIN - STEEL FEEL

    Jun 21, 2016 · It can be divided into two categories: primary and secondary. Primary steel making includes "converting liquid iron from a blast furnace and steel scrap into steel via basic oxygen steel making or melting scrap steel and/or direct reduced iron (DRI) in an electric arc furnace". The secondary process involves alloying.

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    Steel Slag - Material Description - User Guidelines for ...

    Steel slag, a by-product of steel making, is produced during the separation of the molten steel from impurities in steel-making furnaces. The slag occurs as a molten liquid melt and is a complex solution of silicates and oxides that solidifies upon cooling.

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    Scrap melting model for steel converter founded on ...

    The melt model is connected with the solid scrap model via solid/liquid interface. The interface model can take into account solidification of iron melt, melting of solidified layer, a situation without such phase changes, and scrap melting. The aim is to predict the melting rate of the scrap .

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    London Metal Exchange: LME Steel Scrap

    Current and historical LME Steel Scrap prices, stocks and monthly averages. Cookie Policy. We use cookies for statistical and measurement purposes, to help improve our website and provide you with a better online experience. By clicking I accept you agree to such purposes. You can find out more and withdraw your consent at any time.

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    Glossary - steel

    Scrap is dumped into the furnace vessel, followed by the hot metal from the blast furnace. A lance is lowered from above, through which blows a high-pressure stream of oxygen to cause chemical reactions that separate impurities as fumes or slag. Once refined, the liquid steel and slag are poured into separate containers. Bar Turning

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    Steel Glossary | Glossary of Terms | Platts

    In steelmaking this is the collective term for the principal raw material inputs to a blast furnace (iron ore, coke, limestone), electric arc furnace (scrap and/or direct reduced iron) and basic oxygen furnace or steel converter (liquid pig iron, scrap).

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