DoLOmITE in SpoNge iRON PROcESs

  • SPONGE IRON – Lloyd's Metals

    Process. Sponge iron making is a process in which iron ore lumps (typically 5mm-18mm size) are tumbled with a ‘select’ grade of iron-coking coal little dolomite inside an inclined rotary kiln and control combusted in the presence of air for about 12 hours before the products are air cooled, magnetically separated, screened and size wise in ...

  • Dolomite – Its Processing and Application in Iron and ...

    2017-6-28 · Dolomite is an anhydrous carbonate mineral. It is a double carbonate of calcium and magnesium (CaCO3.MgCO3). It is one of the important raw materials used in production of iron and steel. Dolomite contains theoretically 54.35 % of CaCO3 and 45.65 % of MgCO3 or 30.41 % of CaO, 21.86 % of MgO, and 47.73 % of CO2.

  • Sponge Iron :: TMT Next - Building The New

    Sponge iron making is a process in which iron ore lumps (typically 5mm-18mm size) are tumbled with a 'select' grade of iron-coking coal little dolomite inside an inclined rotary kiln and control combusted in the presence of air for about 12 hours before the products are air cooled, magnetically separated and screened.

  • OPERATIONAL ASPECTS OF SPONGE IRON

    2012-1-10 · Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge iron. Depending

  • Sponge Iron - Sambhv Steel

    2021-6-19 · Sambhv’s Direct Reduced Iron (DRI) plant uses coal-based technology for the production of sponge iron. The process includes the de-oxidisation of iron ore below the melting temperature of iron through the direct reduction process using high-grade iron ore and non-coking coal. The material used is iron ores lumps/pellets, Coal and Dolomite.

  • Energy Audit Methodology of Sponge Iron

    2014-7-14 · Most of the plants in India use DRI process—a solid state direct reduction process by which iron ore is reduced to sponge without phase change (Figure 1). Raw material mix-iron ore, dolomite and coal are fed to one end of rotary Kiln and product sponge iron along with char is taken out from the other end. Apart from this, primary

  • WELSPUN STEEL LIMITED

    Sponge iron is a metallic product produced through direct reduction of iron ore in the solid state. It is a substitute for scrap and is mainly used in making steel through the secondary route. The process of sponge iron making aims to remove the oxygen from iron ore. The quality of sponge iron is primarily ascertained by the percentage of ...

  • Raw Materials for DR Processes | SpringerLink

    2020-3-3 · Iron ore or pellets, reductant (i.e. non-coking coal or natural gas) and limestone/dolomite are the main raw materials for DR technology. For the successful operations, the process of DR technology has specified the characteristics of the

  • Sponge Iron Production Process - Arij Trading

    2022-1-14 · Sponge iron production process discussed herein are selected from known methods of which the references are available and referable. We look at

  • Sponge Iron - Sambhv Steel

    Sambhv’s Direct Reduced Iron (DRI) plant uses coal-based technology for the production of sponge iron. The process includes the de-oxidisation of iron ore below the melting temperature of iron through the direct reduction process using high-grade iron ore and non-coking coal. The material used is iron ores lumps/pellets, Coal and Dolomite.

  • Simulation of Rotary Kiln Used in Sponge Iron Process ...

    2015-2-15 · out. The role of kiln is to convert the raw material (iron ore, coal and dolomite) into the sponge iron [8]. Detail reaction mechanism of the process is discussed below: There are two reduction reactions. First reaction converts iron ore to iron oxide which further reacts with CO to produce metallic iron (Fe) which is called sponge iron.

  • MGM

    The basic raw materials for the production of sponge iron are iron ore, non coking coal and dolomite. Iron Ore: Iron ore is the source of iron and available in oxide form namely hematite(Fe2O3). As only oxygen can be removed from the iron

  • Rishabh Sponge Pvt. Ltd. - Goyal Group

    In Rishabh Sponge all modernised and completely PLC operated, full proof automation system is in place right from receiving of raw materials like Iron Ore, Coal, Dolomite etc. & at every stage of manufacturing process including material handling conveyor system, material feeding, mixing, screening, separation as well as finished product storage systems and units.

  • Rotary Kiln Dri Process - divinechannel

    2021-4-29 · kiln process.1 In this process approximately 1.5 tons of lump ore -31.53.15mm 800 kg of coal and 40 kg of dolomite are fed to a kiln to produce 1 ton of DRI. At the kiln exit the transfer of material is through a transfer chute closed off from the atmosphere through which the material falls into a rotary cooler. The DRI produced in the .

  • Raw Materials for DR Processes | SpringerLink

    2020-3-3 · Iron ore or pellets, reductant (i.e. non-coking coal or natural gas) and limestone/dolomite are the main raw materials for DR technology. For the successful operations, the process of DR technology has specified the characteristics of the

  • The Making of Iron & Steel

    2020-8-3 · The BOS process uses pure oxygen, injected by a lance, for refining the relatively impure hot metal (and scrap is used for temperature control). The electric arc furnace uses primarily electrical energy to supply heat to melt scrap steel, sponge iron, or mixtures of scrap and other iron units. Compared to the BOS process, the EAF requires

  • Sponge Iron – Raiva International Trading

    Sponge Iron. Some of these advantages of during steel making process: More reduction of Feo and send back Fe from Slag phase to melting Phase. Oxygen remained from injection is negligible (not suitable for casting) Pasty Slag will generate without any graphite injection. Coke addition requirement will decrease sharply.

  • Sponge Iron Production Process - Arij Trading

    2022-1-14 · Sponge iron production process discussed herein are selected from known methods of which the references are available and referable. We look at the 4 different methods of producing sponge iron: Midrex process. HYL

  • Energy survey of the coal based sponge iron industry ...

    2015-9-1 · The actual process of the coal based sponge iron production is based on SL/RN process (jointly developed by the Steel Company of Canada, Lurgi Chemie, Republic Steel Company and National Lead Corporation in 1964), which works on direct reduction of ore.This process is adopted by worldwide conventional sponge iron industries.

  • New Sponge Iron Rotary Kiln Design In Sponge Iron ...

    2020-9-10 · Sponge Iron Manufacturing Process of New Design Sponge Iron Rotary Kiln Energy Comprehensive Utilization System. The iron concentrate, dolomite, and coal from the stockyard enter into three groups of metering pneumatic conveying devices of the feeding system for metering. The measured iron concentrate, dolomite, and 50% of coal all enter the ...

  • Simulation of Rotary Kiln Used in Sponge Iron Process ...

    2015-2-15 · out. The role of kiln is to convert the raw material (iron ore, coal and dolomite) into the sponge iron [8]. Detail reaction mechanism of the process is discussed below: There are two reduction reactions. First reaction converts iron ore to iron oxide which further reacts with CO to produce metallic iron (Fe) which is called sponge iron.

  • MGM

    The basic raw materials for the production of sponge iron are iron ore, non coking coal and dolomite. Iron Ore: Iron ore is the source of iron and available in oxide form namely hematite(Fe2O3). As only oxygen can be removed from the iron

  • Raw Materials for DR Processes | SpringerLink

    2020-3-3 · Iron ore or pellets, reductant (i.e. non-coking coal or natural gas) and limestone/dolomite are the main raw materials for DR technology. For the successful operations, the process of DR technology has specified the characteristics of the

  • Status of Sponge Iron Plant in Orissa -

    2018-9-17 · 3 Raw Material for sponge iron plant Coal: Non-coking coal having certain important parameters is being used for the direct reduction of iron ore . Important factors determining coal quality are: • Chemical properties such as fixed carbon, ash content, volatile matter, etc.: & • Physical properties viz, reactivity and ash fusion temperature. In Orissa scenario, all most all

  • The Making of Iron & Steel

    2020-8-3 · The BOS process uses pure oxygen, injected by a lance, for refining the relatively impure hot metal (and scrap is used for temperature control). The electric arc furnace uses primarily electrical energy to supply heat to melt scrap steel, sponge iron, or mixtures of scrap and other iron units. Compared to the BOS process, the EAF requires

  • Rishabh Sponge Pvt. Ltd. - Goyal Group

    In Rishabh Sponge all modernised and completely PLC operated, full proof automation system is in place right from receiving of raw materials like Iron Ore, Coal, Dolomite etc. & at every stage of manufacturing process including material handling conveyor system, material feeding, mixing, screening, separation as well as finished product storage systems and units.

  • Sponge Iron – Raiva International Trading

    Sponge Iron. Some of these advantages of during steel making process: More reduction of Feo and send back Fe from Slag phase to melting Phase. Oxygen remained from injection is negligible (not suitable for casting) Pasty Slag will generate without any graphite injection. Coke addition requirement will decrease sharply.

  • Energy survey of the coal based sponge iron industry ...

    2015-9-1 · The actual process of the coal based sponge iron production is based on SL/RN process (jointly developed by the Steel Company of Canada, Lurgi Chemie, Republic Steel Company and National Lead Corporation in 1964), which works on direct reduction of ore.This process is adopted by worldwide conventional sponge iron industries.

  • Project Proponent M/s BRGD Sponge and Iron Pvt. Ltd.

    2018-1-13 · 5.1 SPONGE IRON PLANT There is a plan to install 4x100 TPD DRI kilns for production of 1,20,000 TPA sponge iron. Manufacturing Process The proposed plant uses the coal based process in which iron oxide in pellet/iron ore will be reduced with non coking coal in a rotary kiln to make sponge iron.