Tata Sponge goes for maiden iron ore import to beat shortage ... - DNA. 23 Aug 2014 ... "Hike in royalty from 10% to 15% would raise cost of production of iron ore but we are ok with it.
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DRI, also known as sponge iron, is the product of reducing iron oxide in the form of iron ore and steel plant wastes into metallic iron, below the melting point of iron and typically in the range of 800–1200 °C. Iron oxide is charged into shaft furnace, rotary kiln, or fluidized beds
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2.3 The Höganäs Sponge Iron Process The Höganäs sponge iron process, is essentially a chemical process in which finely divided iron ore is being reduced with coke breeze yielding a spongy mass of solid metallic iron, which can readily be comminuted to iron powder. The iron ore used at Höganäs is a magnetite slick (powdery Fe 3 O 4
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In this method, heat coal (as a reducing agent) is mixed with iron ore and sponge iron is produced in a horizontal furnace. Input iron ore: In the Midrex or HYL process, it is generally recommended to use high quality cooked pellets with a maximum of about 30% iron ore lumps.
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Direct reduced iron ( DRI ), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) into iron by a reducing gas or elemental carbon produced from natural gas or coal. Many ores are suitable for direct reduction.
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Mar 30, 2016 This product is known as direct reduced iron (DRI) or sponge iron. Processes that produce iron by reduction of iron ore (in solid state) below the
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Sometimes known as direct-reduced iron, sponge iron is a product that is produced using iron ore. The iron ore is often in the form of pellets or lumps, and is subjected to a reduction process that is created by the use of a reducing gas that emits from coal or a natural gas source.
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Iron ore of size 5 mm to 20 mm is being used for the production of Sponge iron. Iron ore is being fed to the Ground hopper, from where it conveyed to the Screen with the help of Vibro Feeder, where Oversize i.e. + 20 mm and Undersize i.e. – 5 mm is being removed by screening.
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Jul 29, 2010 The carbon content in sponge iron produced by coal based rotay kiln processes are generally low and is in the range og 0.08% to 0.20%.The carbon content in gas based processes can be controllrd to a level of 1.5% to 2.0% based on requirement for steel making. Size Distribution:
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Jun 15, 2021 Production from iron ore Sponge iron is produced by treating iron ore with coal at a temperature below the melting point of iron. This process results in
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Production of iron sponge from iron ore Download PDF Info Publication number US2650160A. US2650160A US141363A US14136350A US2650160A US 2650160 A US2650160 A US 2650160A US 141363 A US141363 A US 141363A US 14136350 A US14136350 A US 14136350A US 2650160 A US2650160 A US 2650160A Authority US United States
MoreSponge 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 process (4th generation) or Energiron. SL / RN process. Tunnel furnace process.
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Sep 12, 2012 This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is ‘directly reduced’ in the solid-state, using either natural gas or non-coking coal, to produce a highly metallised material, referred to as sponge iron (or direct reduced iron).
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products [1-2]. In the year 1908 use of tunnel kiln started for iron oxide reduction. This process was invented by E.Sieurin as Hoganas process [3]. In 1954, more kilns came in operation in SWEDEN and USA. Presently it is more popular in China for sponge iron
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Jun 21, 2021 A pioneering pilot project in Lulea, Sweden, designed to produce “fossil-free” steel has successfully completed test production of sponge iron, demonstrating it is possible to use hydrogen ...
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In the Direct Reduced Iron (DRI) plant, production of sponge iron using a solid reductant involves reducing iron ore (lumps/pellets) with a carbonaceous material such as coal. The reduction is carried out in a rotary kiln (which is inclined and rotates at a pre-determined range of speeds) at a stipulated temperature (850°C -1,500°C).
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Iron ore crushing is not required since sized material has to be purchased. Iron ore of size 5 mm to 20 mm is being used for the production of Sponge iron. Iron ore is being fed to the Ground hopper, from where it conveyed to the Screen with the help of Vibro Feeder, where Oversize i.e. + 20 mm and Undersize i.e. – 5
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Jul 29, 2010 In general sized iron ore of 5-18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with +16mm not exceeding 15-20%.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.
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IRON ORE PRICES IN THE CONTEXT OF THE ECONOMICS OF SPONGE IRON AND STEEL PRODUCTION September 2008 Steel and Natural Resources Strategy Research 3368, Sector-D, Pocket-III, Vasant Kunj, New Delhi-110 070, India SNRSR Research and Beyond
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International Iron Metallics Association. The IIMA is dedicated to those involved in the ore-based metallics value chain - raw material supply, production and transformation, trading and distribution, transportation and logistics, technology and equipment.
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The sponge iron formed in the direct reduction process is then melted in an electric arc furnace. In these processes, the iron oxides in the ore are reduced to metallic iron. In the next step, the raw iron is usually dropped into a torpedo ladle car where reagent is added to purify the iron from sulfur.
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Nov 09, 2014 Sponge iron making process 1. ALBERTUS SEPTYANTOKO 2712100014 2. IRON ORE • Iron = 65-67 % • SiO2 + Al2O3 = 2-3 % • CaO + MgO = 0,5-1 % • Sulphur = 0,02 % max • Phosphorus = 0,04 % max Chemical Composition • Size = 5-18 mm • Shatter Index = +95 % • Tumbler index = +88 % • Reducibility Index = +94 % • Thermal Degradation Index = 5 % Physical Composition
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Jun 22, 2021 Direct reduction means that iron ore, which mainly consists of different iron oxides, is reduced to a porous, solid product of pure metallic iron—sponge iron—at temperatures below the melting point of the iron. The reduction involves removing the oxygen from the iron ore, which is a prerequisite for steel production.
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2.1 Iron Ore Composition Iron very rarely occurs in the earth's surface as a metal. It is widely distributed, combined with oxygen as iron oxides. In fact it is believed that iron makes up about 5% by weight of the earth's crust. Geologists recognise various types of iron ore, classified chiefly according to iron (Fe) content (see Table 1 below).
MoreProduction of iron sponge from iron ore Download PDF Info Publication number US2650160A. US2650160A US141363A US14136350A US2650160A US 2650160 A US2650160 A US 2650160A US 141363 A US141363 A US 141363A US 14136350 A US14136350 A US 14136350A US 2650160 A US2650160 A US 2650160A Authority US United States
MoreSep 12, 2012 This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is ‘directly reduced’ in the solid-state, using either natural gas or non-coking coal, to produce a highly metallised material, referred to as sponge iron (or direct reduced iron).
Moreproducts [1-2]. In the year 1908 use of tunnel kiln started for iron oxide reduction. This process was invented by E.Sieurin as Hoganas process [3]. In 1954, more kilns came in operation in SWEDEN and USA. Presently it is more popular in China for sponge iron
MoreIn the Direct Reduced Iron (DRI) plant, production of sponge iron using a solid reductant involves reducing iron ore (lumps/pellets) with a carbonaceous material such as coal. The reduction is carried out in a rotary kiln (which is inclined and rotates at a pre-determined range of speeds) at a stipulated temperature (850°C -1,500°C).
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Dec 09, 2016 With significant augmentation of iron ore production from states of Odisha, Karnataka, Chhattisgarh and Goa, India’s iron ore production is anticipated to increase by 18% y-o-y and touch 183 mnt in FY17. Increasing domestic iron ore production
MoreJul 29, 2010 In general sized iron ore of 5-18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with +16mm not exceeding 15-20%.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.
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requirement of sponge iron production. Today India produce 13.9 million tons of sponge iron, out of which 4.2 million ton is gas based and remaining 9.7 million ton is coal based. India has a proven reserve of 410 million ton of high grade iron ore, another 440 million ton
MoreSponge 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 finished ...
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Sep 29, 2019 The total capacity is reported to be about 11MT of sponge iron; in Chhattisgarh 4.5 MT, followed by 2.2 MT in Odisha and 1.6 MT in West Bengal. In India, most of the sponge iron producers do not have captive mines of any of the raw materials like hematite, non-coking coal and limestone, which are used for sponge iron production.
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Direct Reduced Iron (DRI) Production Plant NIPPON STEEL ENGINEERING CO., LTD. Basic Concept or Summary S-16 u A direct reduced iron (DRI) production plant is a shaft reduction furnace to produce DRI with large metal iron content by directly reducing iron ore (or iron ore pellets) with reducing gases.
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Aug 31, 2018 A. Direct reduction of iron ore fines obtained as mining waste for production of Sponge Iron EXAMPLE 1 Iron ore fines as obtained from mines in Orissa were used as sample and microwave-assisted heating was carried out till the temperature of 1250 C was attained in a reducing atmosphere comprising a mixture of hydrogen gas and nitrogen gas in ...
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Mar 08, 2021 The DRI-EAF combination allows for higher electrification and lower emission if low-carbon feedstocks and electricity are used. The production of steel from the DRI-EAF route exceeded 90 million tons in 2018 (5% global production) [Worldsteel Association, 2019], with DRI sponge iron production over 100 million tons [(Midrex, 2019)].
MoreSponge iron manufacture is highly sensitive to raw material characteristics. Therefore, it is essential to examine the chemical and physical characteristics of raw materials, both individually and in combination. The basic raw materials for the production of sponge iron are iron ore, non-coking coal and dolomite.
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sponge iron production. Sponge Iron is a processed iron ore prepared and manufactured for use in induction furnaces and arcs in several stages. As you know, direct use of granulated iron ore, which often has a purity range of 50 to 65%, or use of iron ore pellets having a purity of between 64 and 69% is unlikely for these types of furnaces ...
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