A Brief Summary of the Development of the Sponge Iron Process
Iron ore, when subjected to reducing gases at a temperature suitable for reduction of the oxide but not high enough to melt the ore or metal formed, is converted into metallic iron. The product, being the original piece of iron oxide minus its oxygen, is sponge-like in appearance when viewed under a magnifying glass, and hence is called 'sponge …
Optimization of Biomass Materials for use in the Sponge …
The sponge iron process is a process for producing sponge iron, which is porous iron [1]. The raw material used for producing sponge iron is magnetite ore concentrate (Fe 3 …
(PDF) Sponge Iron Powder
1- Reduction of mill scale by Hoganas process in tunnel kiln. 2- Crushing the sponge iron cylinder. 3- Annealing of the obtained powder in a belt furnace with broken ammonia. 4- Reaching the ...
Iron
Sponge iron powder . The Höganäs process is a direct reduction method for production of sponge iron powder using magnetite ore (Fe3O4) and carbon as raw materials. 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
Sponge Iron Industry | PPT
DRI is preferred in India because of 1.Small scale of production. 2.Access to iron ore. 3.Paucity of coking coal in India. Between 2004-05 and 2009-10, the DRI production in India has increased by 24% …
CN1804049A
The relates coal-base direct reduction process for sponge iron with different shape by tunnel kiln without outer combustion chamber and the combination comprises as shown in abstract figure: to iron concentrate, firing pellet, cooling or compacting; preparing the reducer; blending, loading into retort; entering the kiln; out the kiln; and sorting.
WHAT IS SPONGE IRON AND HOW IS IT MADE?
Iron oxide ores taken out from the Earth are allowed to absorb carbon by a reduction process. In this natural reduction, as the iron ore is warmed up with carbon, it results in a surface with hole marks, hence the name "Sponge Iron". The commercial process is a solid solution reduction, also called Direct-Reduced Iron (DRI).
A Brief Summary of the Development of the Sponge Iron …
The product, being the original piece of iron oxide minus its oxygen, is sponge-like in appearance when viewed under a magnifying glass, and hence is called 'sponge …
CASE GROUP
FINES TO SPONGE DRI (Direct Reduced Iron) Tunnel Kiln was commissioned on 24 November 2011. CASE gave this technology to India and this was also first of its kind in India. The process has been established now after earlier hiccups. The process of Tunnel Kiln uses fines of Iron ore and Coal which are mixed together in specified proportions to ...
PRODUCTION OF SPONGE IRON BY TUNNEL KILN
Full Text PDF [2047K] Abstracts. Continuous experiment was performed on a industrial scale for the production of sponge iron by using tunnel kiln furnace. Crushed …
(PDF) Desain Dan Simulasi Tungku Bakar Untuk Pengolahan …
Ferruginous sand is one of the natural resources that are scattered across Indonesia. Ferruginous sand is generally in the form of magnetite (Fe3O4) and hematite (Fe2O3) with a high content of impurities such as silica, alumina, and titanium oxide.To
SPONGE-IRON
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 reducing agent in Rotary Kiln. Sponge iron is rich in Metallic Iron (Pure Iron) with consistent chemical & physical characteristics. ...
sbm/sbm production sponge iron through tunnel kiln process…
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Chapter 1 Review of Sponge Iron Making Process …
metallic iron is called as degree of metallization in sponge iron technology. Sponge Iron Making Process(Coal Based) Krupp-Renn Process : The Krupp-Renn process was developed in 1930. In this process high silica ore and lime stone is treated. In this process a mixture of -6.4mm ore and
Sponge Iron production from ore -coal composite pellets in Tunnel …
However, Rotary kiln process suffers from serious limitations like low productivity and pollution. In this respect fixed bed 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.
Sponge Iron Production From Ore-Coal Composite Pellets in Tunnel …
However, Rotary kiln process suffers from serious limitations like low productivity and pollution. In this respect fixed bed 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 ...
Coal based Direct Reduction Rotary Kiln Process …
The coal based direct reduction rotary kiln process was developed for converting iron ore directly into metallic iron without the melting of the materials. The process has the advantage of low capital …
Sponge Iron Production by Calcium Carbonate, Sodium …
sponge iron from renewable materials including iron oxides were investigated. In the next step, parameters such as reduction time, the type of catalysts, particle size, and temperature of the reduc-tion process were investigated in the iron extraction process. Figure 1: Schematic of the iron extraction process in a tunnel furnace.
The production process of sponge iron in rotary kilns …
In this paper, the production process of sponge iron in rotary kilns from the perspective of mechanics and chemistry is investigated. Keywords: Sponge iron, rotary kilns, ... Today, the tunnel kiln method is recognized as a successful method of producing sponge iron on a small scale [3]. International Research Science and Development Journal
CN1203950A
The new process for production of globular sponge iron by using tunnel furnace method includes the following procedures: preparation concentrate breeze powder, drying, magnetic selection, pelletization, screening, preparation of reducing agent, blending, placing in reactor, putting in furnace, unloading and cleaning. Said invention adopts a kind of …
Production of Sponge Iron through Tunnel Kiln …
PDF | On Apr 1, 2010, Swaren Bedarkar and others published Production of Sponge Iron through Tunnel Kiln Process | Find, read and cite all the research you need on ResearchGate
Sponge Iron | A-One Steel Group
Grades of sponge iron - 82+ / 80+ Process used to manufacture - Rotary kiln DRI; Specifications - C-0.15, S-0.035, P-0.045; Size 5-20mm with processing to fast melting ; Low-cost process and can use wide range of Raw materials like Coal & Iron Ore
Conversion of Sponge Iron From Low Grade Iron ore And …
The re-oxidation phenomenon is an exothermic process. Sponge iron is spongy in structure having large in porous area. Thus it is very much reactive and seeks for high oxidation. So the sponge iron produced is highly susceptible to re-oxidation. So it is important to study the kinetic of sponge iron re-oxidation. Keywords—Sponge iron, Ir
Reduction Efficiency of Iron Ore–Coal Composite Pellets …
TECHNICAL PAPER TP 2890. Reduction Efficiency of Iron Ore–Coal Composite Pellets in Tunnel Kiln For Sponge Iron Production. S. C. Khattoi•G. G. Roy. Received: 11 June …
Sponge iron from magnetite
New Delhi [India], October 12 (ANI/PNN): With India eyeing record Steel exports in FY22, the Indian Steel Industry is quickly becoming hot property. Along with it Sponge Iron, one of the essential raw materials used in steel productions, is bound to have a growing domestic demand. Accompanied by rising coal prices, there is tremendous room for technological …
(PDF) Operation of Coal-Based Sponge Iron …
Data-1 includes temperatures profiles and air inlet at positions, AT-1 to AT-3 and MF-1 and MF-2, inside the kiln whereas, flow rates of iron ore, feed coal, slinger coal and sponge iron is ...
SPONGE IRON PRODUCTION FROM ORE -COAL …
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 production from beneficiated iron ore fines cakes. In this process, the material passes through
Sponge Iron | SpringerLink
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Chapter 1 Review of Sponge Iron Making Process …
WEBmetallic iron is called as degree of metallization in sponge iron technology. Sponge Iron Making Process(Coal Based) Krupp-Renn Process : The Krupp-Renn process was …
(PDF) DESAIN DAN SIMULASI TUNGKU BAKAR UNTUK PENGOLAHAN …
desain dan simulasi tungku bakar untuk pengolahan pasir besi menjadi sponge iron dengan teknologi tunnel kiln = design and simulation of furnace for ferruginous sand to be sponge iron process by ...
Optimization of Biomass Materials for use in the Sponge …
The sponge iron process is a process for producing sponge iron, which is porous iron [1]. The raw material used for producing sponge iron is magnetite ore concentrate (Fe 3 O 4 ... they will be placed on a cart and enter a tunnel kiln [1]. The cart will travel through three zones in the tunnel kiln; the pre-heating zone followed by a firing zone