Feb 13, 2015 · There is abundance availability of iron ore fines and coal fines, beneficiated iron ore cake and producer gas, which are favourable for manufacturing sponge iron in tunnel kilns. Charging of cold setting iron ore–coal composite pellets or briquettes in place of standard feed material could possibly enhance tunnel kiln productivity and efficiency.
Direct sponge iron fines price reduction processes are roughly divided into two egories: gasbased and coalbased. In both cases, the goal of this process is to expel the oxygen contained in various forms of iron ore (rock size, concentrate, pellets, mill scale, furnace dust, etc.) in order to convert the ore into metallic iron without melting it.
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Jan 31, 2011 · Sponge iron's dirty growth. In the years to come, India's expanding steel production will be largely driven by sponge iron. But its manufacturing process, based on coal, is highly polluting. The repercussions are already visible near sponge iron factories which have mushroomed in iron ore .
Feb 05, 2021 · High Iron Ore Prices a Bother. The Indian sponge iron industry, over the past couple of months, has been witnessing a constant hike in prices amid robust steel demand and shortage of a key commodity for manufacturing steel – iron ore. As per reports, the prices of sponge iron jumped from INR 18,600/MT (PDRI price exRaipur, excluding GST ...
Aug 08, 2012 · What qty of iron ore and coal be used in the production for getting 1 metric ton of sponge iron? ... The steam engine helped power machines which was .
The invention is about the producing method of the sponge iron. The process is: (1) make the material into the double iron oxide ball; (2) put the double iron oxide ball and the reductant into the reaction tank to get the sponge iron ball mass; (3) put the mass into the thermal insulating flume to separate the reductant, to remove the C, S,O in the protection of the N2 or the H2 to produce the ...
Sponge iron is obtained by direct reduction of iron ore. It contains nearly 94% of metallic iron and thus it is vital constituent in steel making process. It is made either by making use of coal or by making iron ore undergo reaction with reducing gases. Using coal for reduction of iron ore has severe environmental issues as it leads to ...
Jan 01, 1970 · Direct reduction refers to solidstate processes which reduce iron oxides to metallic iron at temperatures below the melting point of iron. Reduced iron derives its name from these processes, one example being heating iron ore in a furnace at a high temperature of 800 to 1,200 °C (1,470 to 2,190 °F) in the presence of the reducing gas
It is called sponge iron, and the Bureau of Mines has decided to risk 500,000 in hurryup development of the hitherto unpractical process by which it is made. To make sponge iron, ore is not smelted. It is mixed with pulverized coal (natural gas can also be .
Jul 12, 2021 · Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, and/or fines) into iron with a spongelike exterior, without melting. The heart of the direct reduction is the shaft furnace, which is filled from the top with lump ore and pellets. DRI production turns iron ore into iron using gaseous reducing agents such as ...
In the MAGMA process, iron ore and limestone are preliminary heated by the offgases of the smelting chamber in a rotary kiln to temperatures of 9001,000°C. The heated charge is subsequently fed into MAGMA for smelting and for reduction of iron oxides into iron in the liquid bath.
Process description. The Romelt process of reducing molten is a continuous onephase process used in the production of liquid pig iron from various raw materials that containing iron and waste with the use of coal. Figure 1, shows a general layout of a Romlet unit, where the furnace is fed with raw materials, coal and limestone using charging ...
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Apr 24, 2013 · A particular rank of coal, known as "coking coal", is required to make the preferred quality of coke. Then raw iron is made by reducing (removing the oxygen from) iron ore (iron oxide) by reacting it at high temperature with coke in a blast furnace. About half of the carbon in the coke combines with the oxygen from the iron ore to make CO2.
About. 32years of experience in Sponge Iron, Steel and Power Industry. Coal based Rotary Kiln Process for DRI (Sponge Iron) making is the speciality as success in return. Product development with best economy. Power Generation though Waste Heat and Varied Fuels. Proven and safe practices to achieve best PLF is always in top strategy list.