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.Free consultation
Sponge Iron Calcination Rotary Kiln Iron Ore , Find Complete Details about Sponge Iron Calcination Rotary Kiln Iron Ore,Iron Ore,Rotary Kiln Iron Ore,Sponge Iron from Cement Making Machinery Supplier or Manufacturer Gongyi Derui Machinery .Table 2.1 Raw Materials for Production of Sponge Iron Material Size Iron Ore 5 18 mm Coal 3 20 mm Dolomite 2 6 mm Air 2.1.3. Theory In any rotary kiln process based on coal, the reduction of iron oxide takes place by the carbon monoxide produced from coal. The following reactions involved are as.
The chemical process involved in making sponge iron removes oxygen from iron ore by using a reducing agent in the form of non coking coal [Patra et al, (2005)]. The reduction process is carried out.2. Description of Sponge Iron Manufacturing Process . 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.
The idea of the process of how to make sponge iron from iron ore is basically to add coal to remove oxygen from iron by adding non coking coal and to remove sulfur by adding lime stone , the iron ore and coal are crushed in crushers and screened to the recommended sizes (5mm mm) , then mixed and heated to degrees centigrade s , the mixture is treated in rotary kiln process with air control.2. Description of Sponge Iron Manufacturing Process. 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 . 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.
Apr 30, 2011 The key difference between sponge iron and pig iron is that we can produce sponge iron by direct reduction of iron ore through reducing agents whereas the production of pig iron is by melting iron ore with charcoal and limestone at very high pressures Sponge iron and pig iron are different forms of iron that we can produce from iron ores that occurs naturally under the surface of.Almost 35 mass of the earth is covered by iron and its ores. Iron ore suppliers follow a process called reduction in which oxygen is removed from iron ores and pure iron is obtained. Iron ore suppliers make use of blast furnaces for the production of steel and other alloys which are used in many industries.
An established alternative to coal and coke based reduction of iron ores in blast furnaces is the ore reduction by coal or reformed natural gas (CO, H2) to direct reduced iron (DRI) or hot.I claim 1. An apparatus for producing sponge iron from iron ore comprising a melt down gasifier or coal to gas plant, a shaft furnace having a top portion of a first cross section, an inlet in said top portion for introducing iron ore thereinto and an outlet for removing top gas therefrom a base portion of a second cross section larger than said first cross section and having an outlet for.
Sep 01, 2015 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.Direct reduction of iron ore from tunnel kiln process. Although iron powder could be produced in sponge iron tunnel kiln production line and it is the main raw material for powder metallurgy production lines. Process . In sponge iron production plant by tunnel kiln method, after crushing and screening raw materials, iron ore, coal and limestone.
As touched upon earlier, sponge iron is mainly produced from ore by two different routes (a) By reducing gases (CO and H 2 ) in a shaft furnace (b) Through direct treatment with coal in a rotary kiln.Sponge Iron Sponge iron is the metallic product formed by the reduction (removal of oxygen) of iron ore at temperature below the fusion point of.During the last four decades, a new route of ironmaking has rapidly developed for direct reduction (DR) of iron ore to metallic iron by using noncoking coal natural gas. This product is known as.
(3) Sponge Iron Process As the name implies, the spongy iron is obtained by the reduction of lumpy iron ore or iron ore pellets from the oxide form into the metallic state. The iron content of the product so obtained varies from 90 to 94 and the balance represents the traces of gangue and residual iron.China Supplier of Sponge Iron Direct Reduced Iron 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.
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 in the form of pellet, iron ore lumps, or fines. The reduction takes place using gaseous reductants (CO + H.Feb 10, 2021 To purify and strengthen iron, materials like coke are mixed in with it to remove oxygen. To coax the oxygen atoms away from the ore requires heat and an alternate atomic partner for the oxygen to bond to. Carbon fills this role nicely, and is readily available in the form of everyday charcoal, or coke, a form of carbon made from coal.
Oct 03, 2011 Sponge iron is produced from iron ore by using low quality coal. In these plants big rotary kilns are used where the iron ore, coal and limestone are fed from one end of kiln. The hot air is injected in the kiln from various zones, which heat the raw materials, and a temperature is reached where the iron ore gets reduced leaving solid contents.Sponge Iron production using coal involves reducing iron ore with Solid Carbonaceous material such as coal, coke or lignite. The reduction is carried out in a Rotary Kiln at a pre determined temperature and controlled atmosphere and then cooled to ambient in the Rotary Cooler with.
Such coal based sponge iron making from iron ore is popular both in India and China. However, in the world, almost 80 of sponge iron is being produced by the gas based DR process. Both the gas and coal based DRI technology are gaining importance due to comparatively less investment cost, flexibility in using raw materials like cheap iron ore.Jan 02, 2015 The BOF process uses 25 –35 old steel (scrap) to produce new steel. On average, this process uses 1,400 kilograms (or kg) of iron ore, 770 kg of coal.
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.As a result, this type of iron ore ore must be concentrated before it can be used to produce steel. In other words magnetite ore requires treatment than hematite ore wich must undergo only a simple crushing, screening and blending process before being shipped off for production.
A process for the direct production of sponge iron particles and liquid pig iron from lump iron ore is described, in which the iron ore is reduced as a loose bed in a direct reduction unit by means of hot reducing gases to sponge iron and is subsequently melted in a melting gasifier by means of the introduced carbon and blown in oxygen containing gas, accompanied by the production of reducing gas.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 of 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.
Solid iron ore is reduced to gas at 10 800 C by gas (H2 + CO) or coal. Making sponge iron is a process in which iron ore masses (typically 5 mm 18 mm in size) are placed in a sloping rotary kiln with a small amount of dolomite coal and the process takes about 12 hours in the presence of air.Direct sponge iron fines price reduction processes are roughly divided into two categories gas based and coal based. 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.
Out. The role of kiln is to convert the raw material (iron ore, coal and dolomite) into the sponge iron . 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.It is made by smelting iron ore into a transportable ingot of impure high carbon content iron as an ingredient for further processing steps. It is the molten iron from the blast furnace, a large cylinder shaped furnace charged with iron ore, coke, and limestone. coke A fuel with few impurities and a high carbon content, usually made from coal.
A mathematical model of the coal based direct reduction process of iron ore in a pellet composed of coal and iron ore mixture is investigated using a finite con. Met Coal 101 Grande Cache Coal.Mar 16, 2020 Why make sponge iron briquette For most of the cases in sponge iron briquette making is to deactivate. Sponge iron is a kind of raw material. 1. When using the iron ore to produce The sponge iron briquette machine. Cold DRI briquette machine. Hot HBI briquette machine. Sponge iron briquette process.