In sponge iron production plant by tunnel kiln method, after crushing and screening raw materials, iron ore, coal and limestone are mixed and charged in storage bins in certain ratios. By using an automatic charging system, raw …
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The full form of FIOR process is Fluid Iron Ore Reduction process. In this process the reduction is carried out in a series of four fluidized bed reactor.
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using tunnel kiln is one of the reduction methods that need a very low volume of water for the process in which sponge iron is produced. A tunnel kiln (Figure1) is a long stationary insu-lated furnace made of refractory bricks which has a rail track provision for trolley movement. Materials are filled inside the
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We have provided engineering and consultancy services for more than 500 Sponge Iron Kilns of different modules / capacities ranging from 15,000 TPA to 100,000 TPA. ... DRI (Tunnel Kiln) : 30 TPD 50 TPD 100 TPD Iron Ore Palletization : 500 TPD 1000 TPD 2000 TPD Power Generation through Waste Heat Recovery.
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Request PDF | Reduction Efficiency of Iron Ore–Coal Composite Pellets in Tunnel Kiln For Sponge Iron Production | In order to explore the efficacy of iron ore-coal composite pellets over ...
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Tunnel kiln furnace are evolving as an alternative to Rotary kiln process. Iron ore fines and the low grade beneficiated iron ore cake are directly used for manufacturing of sponge iron in tunnel kilns. The material bed in Tunnel kiln being stationary, it does not require high strength and thermal stability of the raw material.
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The process of Tunnel Kiln uses fines of Iron ore and Coal which are mixed together in specified propotions to eventually make DRI having quality grades of 90% plus metallization. The Technology Iron Ore Fines and Coal Fines mixed together are loaded into SiC (Silicon Carbide) beakers which are then loaded onto the cars.
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The tunnel kilns are mostly used by the industries for heating refractory and ceramic products [1, 2]. In the year 1908 use of tunnel kiln started for iron oxide reduction. This process was invented by Sieurin as Hoganas process [3]. In 1954, more kilns came into operation in Sweden and USA. Presently it is more popular in China for sponge iron ...
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The invention discloses a technology for producing sponge iron in a tunnel kiln. The technology mainly solves the problems that an existing tunnel kiln technology is low in capacity, high in energy consumption, large in loss and the like. Raw materials, a reducing agent and additives are mixed and subjected to ball milling to obtain a ball grinding material; the ball grinding material …
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Consequently, they were replaced by the high production rate 'indirect process,' and the development of modern DR Process did not begin until the middle of 19th century. Perhaps the very first patent in U.K. for sponge iron making was in 1792 presumably using a rotary kiln. More than 100 DR processes have been invented and operated since 1920.
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Innov Engineering advanced tunnel kiln technology is arguably the most sufficient and effective method for sponge iron production which allows for economically feasible plants.
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utilization in the production of sponge iron by reduction of magnetite ore concentrate. The sponge iron process was created in 1910 by Sven Emil Sieurin, and is a solid-state reduction process with a fine iron powder as the end product (Nationalencyklopedin, 2018). Today the …
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1 1 Review of Sponge Iron Making Processes Historical Development. 2 Reasons for Rapid ... process using rotary kilns. 18 SL/RN 19 CODIR, ACCAR 20 TDR, OSIL Krupp-Rein processes. 6 21 Rotary hearth processes based on Inmetco,fastmet 22 Tunnel kiln processes Kinglor-meter,hogans, 23 MIDREX 24 HYL processes 7 25 Parameters of Sponge Iron Making ...
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The reduction process takes place in a gas fired tunnel kiln at around 1200°C for 60 hours producing a sponge iron cake that is crushed, milled and magnetically separated from …
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SIPL is operating 4 x 100 TPD Direct Reduced Iron Rotary Kilns for production of 2000 TPA Sponge Iron at Purulia, using the proven German SL/RN technology. Sponge Iron, also known as Direct Reduced Iron is produced from Hematite Iron ore (5 to 18 mm size) by removing the oxygen by direct reduction process using non coking coal as the fuel and ...
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Our Research & Development department has produced sponge iron for several projects with the Tunnel Kiln technology. The department has also produced sponge iron from our 25TPD Tunnel Kiln at our steel making complex. Based on our findings, the quality of sponge iron made by the Tunnel Kiln technology is superior compared to that produced from ...
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The present investigation deals with the feasibility study of the process development for production of Directly Reduced Iron (DRI) using waste/low grade iron ore (slime), mill scale and waste/less reactive coal (partly oxidized coal i.e. Jhama coal). In order to get most green and dry strength for safe handling and transportation, the pellets of iron ore slime and the pellets of …
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DR process, DRI, HBI, Iron making. Metallization, reformed natural gas, residual elements, Rotary kiln, ... In the gas based reduction processes, a vertical shaft kiln is used in which iron ore is fed into the top of the kiln and …
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1. Krupp Sponge Iron Process The Krupp. 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 ...
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This process involves a modified tunnel kiln designed to produce. sponge iron without going through any intermediate stage of agglomeration and. ... conventional route of making sponge iron ...
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The main raw materials for the production of DRI by the rotary kiln process are (i) sized graded iron ore or iron ore pellets, (ii) non-coking coal, and (iii) dolomite in small quantities to scavenge the sulphur. ... Equivalent metallization – Carbon …
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This is done by using a tunnel kiln, instead of the usual rotary kiln, making it a one of its kind static bed process in India. The coal usage drops by up to 85% for each cycle, resulting in a ...
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The tunnel kiln technology was developed by Hoganas in 1911. In production of sponge iron through the tunnel kiln technology, it is possible to use both magnetite and hematite ores, using various grades of coal and natural gas as …
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Desain dan Simulasi Tungku Bakar untuk Pengolahan Pasir Besi Menjadi Sponge Iron dengan Teknologi Tunnel Kiln (Barman Tambunan, Cuk Supriyadi, Juliasyah) _____ DESAIN DAN SIMULASI TUNGKU BAKAR UNTUK PENGOLAHAN PASIR BESI MENJADI SPONGE IRON DENGAN TEKNOLOGI TUNNEL KILN DESIGN AND SIMULATION OF FURNACE FOR …
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With such dimension of notion WE in our Sponge Iron Manufacturing process through 4 Kilns (1 * 350T and 3 * 500T) laid up the best DRI making process in India. It is Coal Fuel based DRI. Coal based Sponge-iron is a metallic product produced through direct reduction of iron ore in the solid state .As such it is also known as Direct Reduced Iron ...
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Techno-economic evaluation of the process reveals that the sponge iron produced from the Tunnel Kiln process is much cheaper (30-40%) than the conventional process of sponge iron …
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In order to explore the efficacy of iron ore–coal composite pellets over ordinary green pellets, indurated pellets, briquettes as well as standard charging of material in the form of concentric layers of iron ore and coal fines, or their mixture, these pellets were tested at 1,150 °C in a 7 tons per day (7 tpd) pilot tunnel kiln. Reduction of iron ore coal composite pellets in …
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The Research & Development team of Electrotherm has extensively worked upon this process of Sponge Iron making and we have successfully produced sponge iron from our 25TPD Tunnel Kiln at our steel making complex at Samakhyali, Kutch. ... Quality of sponge iron made by the Tunnel Kiln technology is superior as compared to that made from the ...
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Sponge iron production in tunnel kiln – Aramico Company. Sponge iron production by tunnel kiln method was developed from 1911 as Höganäs method in Sweden. After many modifications, now this process is a sufficient and effective method for sponge iron production. The main advantage of tunnel kiln process is the possibility to build small ...
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Energy integration of sponge iron production process ... Figure 1: Flow Sheet of Typical Sponge Iron Plant The inside kiln is lined with refractory and supported on three piers called support rollers with an inclination of 2.5˜. The girth gear is used for the rotation of the kiln. Due to its
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