• Hard tech Down to Earth

    The new technology aims at producing steel directly from iron carbide, cutting out expensive and environmentally sensitive parts of traditional integrated steelmaking, such as the use of electric arc furnace and blast furnace. Direct steelmaking with iron oxide, explains Kenneth Iverson, chairperson of Nucor, would be a 2stage process.

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  • Calcium carbide Wikipedia

    Calcium carbide is used: in the desulfurization of iron (pig iron, cast iron and steel) as a fuel in steelmaking to extend the scrap ratio to liquid iron, depending on economics. as a powerful deoxidizer at ladle treatment facilities.

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  • OVERVIEW OF STEEL PROCESSES Worthington Industries

    INTEGRATED STEELMAKING Integrated production of Hot Bands Hot Strip Mill 11 Reheats steel stock bars before being rolled Removes black oxide from surface of iron or steel at high temps Rolling mill for converting steel ingots into blooms, billets, or slabs Serves to crop the transfer bar at its head and tail Surface texture/finish of iron or ...

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  • Mathematical Model of Hot Metal Desulfurization by Powder ...

    Jun 30, 2011· Although there have been a numerous number of studies on mathematical model of hot metal desulfurization by deep injection of calcium carbide, the research field as a whole is not well integrated. This paper presents a model that takes into account the kinetics, thermodynamics, and transport processes to predict the sulfur levels in the hot metal throughout a blow.

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  • Calcium Carbide an overview | ScienceDirect Topics

    The equipment used for the smelting of calcium carbide is similar to that employed in electric furnaces used for other forms of ferroalloys processing, where carbon is used as a reductant. Calcium carbide is also an intermediate product in the smelting of calcium–silicon alloy. Technical grade calcium carbide is crystallized from the melt and contains ~80% CaC 2 and 10% to 15% CaO (Fig. ).

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  • (PDF) Use of Calcium Carbide and Alumina based Slag ...

    Therefore all the integrated steel producers desulphurize iron before steelmaking. Calcium carbide is one of the reagents used to desulphurize hot metal from the blast furnace, yet the kinetic ...

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  • Technical Review UDC 669 . 184 . 244 : 621 . 746 . 047 ...

    steelmaking steps and for integrated quality control. Automation and improved labor efficiency In our efforts to enhance production efficiency, automation and personnel rationalization were aggressively pursued from the 1980s to the 2000s, and as a result, the number of personnel required for

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  • HYTEMP SYSTEM ENERGIRON

    An additional technology that, on its own provides significant benefits for steelmakers, is the HYTEMP pneumatic transport system for sending hot DRI from the reduction reactor to the EAF shop. When combined with the ENERG IRON Process, the benefits increase substantially by bringing hot, high carbide iron to directly feed the melting furnaces.

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  • Steelmaking with iron carbide (Conference) |

    article{osti_6176817, title = {Steelmaking with iron carbide}, author = {Geiger, and Stephens, }, abstractNote = {The concept of using iron carbide in steelmaking is not new. Tests were run several decades ago, using carbide made from ore, in steelmaking furnaces. The problem was that at that time, the need for the product was not clear and the economics of production were not favorable.

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  • About – Opta Group LLC

    Opta offers a diverse product portfolio to serve a multitude of iron and steelmaking needs. Opta is a global integrated processor, distributor, and seller of industrial minerals. Our mission is to be the leading provider of innovative steelmaking reagents, slag conditioners, and metal remediation materials consumed in the North American and ...

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  • Refractory Solutions for Stainless Steelmaking

    • Integrated with plant PLC and network ... Special antioxidant concepts with reduced carbide formation • Applicable for MgOC, AMC Glaze coating to prevent decarburization during preheating • Applicable for MgOC, AMC and Doloma Challenge ... Steel / StainleSS Steelmaking.

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  • Current status of the iron and steelmaking industry

    Reduction of iron ore fines in the ffcon furnace 1 1 Introduction Current status of the iron and steelmaking industry Current world iron production comprises of 600 million tons per year (MTPY) of hot metal and pig iron, MTPY of direct reduced iron (DRI) and hot briquetted iron (HBI), and approximately 2 MTPY of hot metal produced by direct smelting.

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  • Complete solutions for quality steel

    innovative integrated solutions. Combined process and automation knowhow enhance the value delivered to the customers. Tenova is committed to the continuous development of its technologies in the areas that mostly impact the future of the industries it serves: production quality, energy savings and environmental sustainability.

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  • Understanding Electric Arc Furnace Operations

    the integrated steelmaker. EAFs range in capacity from a few tons to as many as 400 tons, and a steelmaking shop can have from one to five furnaces. In brief, EAFs can be either ac or dc powered and they melt steel by applying current to a steel scrap charge by means of graphite elec …

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  • Desulfurizing Steel: Magnesium is the Reagent of Choice

    steelmaking process, along with calciumcarbide and highgrade injectable lime. Of these three, magnesium gives the best low sulfur level results. To best satisfy low sulfur requirements for turning iron into steel, Almamet’s process injects magnesium reagents in powder or granular form into

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  • The use of graphite electrodes is primarily reflected in ...

    The graphite electrode for steelmaking accounts for about 7080% of the total amount of graphite electrode. (2) used in mine electric furnace. Graphite electrode ore electric furnace is mainly used to produce iron alloy, pure silicon, yellow phosphorus, matte copper and calcium carbide.

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  • Calcium Carbide For Integrated Steelmaking

    125 iron and steel production. 2015910125 iron and steel production 1251 process description13 the production of steel at an integrated iron and steel plant is accomplished using several the most common reagents are powdered calcium carbide cac2 and calcium carbonate caco3 or...

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  • US5665140A Method for the production of iron carbide ...

    A method for producing iron carbide for use as an iron source in steelmaking is provided. The method can use a wide range of feedstocks without depending on natural gas by using other forms of carbon as the carburizing source. The present method accomplishes the production of iron carbide by mixing together finely divided iron oxide containing feedstocks and carbon, pelletizing the mixture ...

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  • The Steel Making Industry

    Primary Metals. Table of Contents Industry Overview Steel Making Industry Ferrous NonFerrous Foundries Aluminum Smelting Refining Copper Processing Lead Processing Zinc Processing Glossary. 2 The Steel Making Industry Background. Steel is an alloy of iron usually containing less than 1% carbon. It is used most frequently in the automotive and construction industries.

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  • Comparison of Ironmaking and Steelmaking Technologies ...

    Comparison of Ironmaking and Steelmaking Technologies1 Technology Major Advantages Major Disadvantages Established Technologies Integrated • raw materials are relatively stable in price and composition compared to scrap • economies of scale • can produce all products • very high capital cost requires agglomerated feed/sinter plant (extra

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