Tunnel KilnProduction of sponge iron by Tunnel Kiln technology was developed in 1911 as Höganäs method. Now very popular, the technology has become an effective method for sponge iron production. With the Tunnel Kiln technology, it is possible to build small plants with low investment costs. The main machineries in sponge iron production through tunnel kiln technology are: material handling and .
sponge iron plants from vsk tecnology · 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
SPONGE IRON – Lloyd's MetalsSponge iron making is a process in which iron ore lumps (typically 5mm18mm size) are tumbled with a 'select' grade of ironcoking 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 product bunkers prior to dispatch. The process ...
Direct Reduced Iron and its Production Processes – IspatGuru · 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 finished sponge iron is drawn off from the bottom after cooling it so as to prevent its reoxidation. The reducing gas is passed through the ore bed, and spent gas is recirculated after heating and reforming to a mixture of H2 and CO in a reformer, where it is also heated ...
2 D Model of Sponge Iron Rotary Kiln Developed Using CFDA schematic diagram of the rotary kiln of sponge iron process considered for the present work is shown in Fig. 1. The rotary kiln consists of a rotating cylindrical shell lined inside with refractory material. The kiln is around 80 m long with 4 m internal diameter with nine different ports of secondary air. In general, the variation in length and diameter of the kiln is from 40 to 100 m and 2 ...
sponge iron plants from vsk tecnology · typs of crushers used for sponge iron greenrevolutionorgin typs of crushers used for sponge iron magnetite for sponge iron Quarrying Crusher Plant In appliion, the SIT is used in the reformer sponge iron, but also portable crushing station, sponge iron plants from vsk tecnology MC CRUSHING MACHINERY equipment of tunnel kiln based sponge iron plant Crusher,machine .
Effluent and Emission Standards for Sponge Iron Plant · The Sponge Iron Plant are free to explore other options/ possibilities to use char for generation of power. Char can be sold to local entrepreneurs for making coal briquettes. It can also be mixed with coal fines, converted to briquettes and used in brick kilns. The industry can explore other reuse/recycling techniques for char.
Status of Sponge Iron Plant in Orissainside the kiln, during which iron ore is optimally reduced and discharged to a rotary cooler for cooling below 120°C., before coming out into the finished product circuit . 3 Raw Material for sponge iron plant Coal: Noncoking coal having certain important parameters is being used for the direct reduction of iron ore . Important factors determining coal quality are: • Chemical properties ...
PROCESS FOR PRODUCTION OF SPONGE IRONProcess for production of sponge iron by direct reduction of iron ore wherein iron ore admixed with a carbonaceous reducing agent is passed through a rotary kiln countercurrent to a gas stream, and wherein granular coking high volatile coal is injected cocurrent to said gas stream as a solid reducing agent by means of oxygen containing gases through an inlet pipe, and said solid reducing ...
OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION IN A ROTARY KILNSponge 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 desulphurizing agents (limestone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge iron. Depending on its content of volatile matter, the coal is partly blown into the ...
WELSPUN STEEL LIMITEDThe sponge iron kilns give off hot gases rich in carbon dioxide. WSL has installed 4 Nos of 10 TPH Waste Heat Recovery Boilers (WHRB) and 1 Nos of AFBC Boiler of 20 TPH and these flue gases are used to generate steam to produce 12 Mw power. WPSL has in place 8 nos ...
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Accretion Control in Sponge Iron Production Kiln using ...2. Kiln Based Sponge Iron Production Process Rotary kilns are found in many processes that involve processing of solids. This study focuses on sponge iron kiln based process. The chemical process involved in making sponge iron removes oxygen from iron ore by using a reducing agent in the form of noncoking coal [5].
Sponge Iron Production ProcessSponge 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.
PATNAIK STEELS and ALLOYS LTD.Patnaik Steels Alloys Ltd. is a Falcon group company, having a group turnover of about 2200 Crores. The factory is loed at village Purunapani, Nayagarh in Keonjhar district of Odisha with a capacity to produce 110000 tons of sponge iron per year, power of 15 .
DRI UPDATEIron Ore Crusher Sponge Iron (DRI) Kiln MET Coke Cold Briquette Mn Fines Briquette Dolomite, Quartz, Lime stone, etc. Blast Furnace Induction Furnace WHR Boiler AFBC Boiler Power STEAM Generation DOLOCHAR FLUE GAS POWER SPONGE IRON PIG IRON C C M Rolling Mill FINISHED Products Mill Scale BF Flue Dust LD Sludge Coke Fines Binders Iron Ore Fines POWER .
SPONGE IRON PLANTThe major Raw Materials required for production of Sponge Iron by the rotary kiln process are: sized graded Iron Ore and NonCoking coal. Limestone, in small quantities, is also required to scavenge the sulphur. IRON ORE The quality requirement of Sized ore for sponge iron production can be classified into: 2 1) Physical requirements: Strength and granulometry are the two ...
production sponge iron through tunnel kiln processIron Manufacturing process related to the, Iron Manufacturing process related to the specified manufacture(s) December 2013 update: addition of new processes description and some modifiions Related manufacture(s) Description of manufacturing process M1: Iron Powders (Iron Powder made by sponge iron process, atomization processes (gas and water) and electrolysis) Iron powder via ...
(PDF) Operation of CoalBased Sponge Iron Rotary Kiln to ...Sponge iron is a type of iron produced by coal based or gasbased reduction of iron ore. It is difficult to measure and control the degree of reduction or quality of the iron ore at intermediate ...
vsk kiln processWith the exception of vertical shaft kilns (VSK) still used in certain... Get Price; Shaft Kiln Cement Plant . There are two main types of kilns to produce cement: the Vertical Shaft Kiln and the Rotary Kiln. The Vertical Shaft Kiln or VSK is probably the first type of kiln that... Get Price; tunnel kiln process for sponge iron making; hot dry process rotary kiln in indonesia; concrete ...
Accretion Control in Sponge Iron Production Kiln using ...2 KILN BASED SPONGE IRON PRODUCTION PROCESS Rotary kilns are found in many processes that involve processing of solids. This study focuses on sponge iron kiln based process. The chemical process involved in making sponge iron removes oxygen from iron ore by using a reducing agent in the form of noncoking coal [Patra et al, (2005)].
Sponge IronIron Ore Pellet is used for reduction. After reduction of iron ore pellet the product resembles sponge because of pores left behind after removal of oxygen. As such it is called Sponge Iron. Sponge Iron is a substitute of scrap in steel melting. Although the reduction in the kiln is not direct, the CO gas reduces the impurities and oxides of ...
SPONGE IRON PLANTSponge iron being magnetic gets attracted and gets separated from non magnetic char. The iron ore and coal crushed and screened to respective sizes are fed to rotary kiln through feed tube in predetermined ratio. The rotary kiln is slightly inclined at an angle deg and rotated by
Flow of materials in rotary kilns used for sponge iron ...Looking forward to the need of developing coalbased sponge iron technology in India, a country having no significant resources of either coking coal or natural gas, the Research and Development Division of the Tata Iron and Steel Company Limited (TISCO) set up a rotary kiln based direct reduction pilot plant in 1975. In this pilot plant, a totally indigenous technology for production of ...
Development of energy conservations scenarios for sponge ... · This paper presents an approach to find the best modifiion in the coalbased sponge iron process with an aim to integrate energy in it. For this purpose, a few energy conservation cases are formulated by integrating unutilized energy present in possible areas of process flow sheet. When unutilized energy of the process is properly integrated, energy demand from outside sources can be ...
Direct Reduced Iron Industry in India — Problems and ProspectsThe rotary kiln sponge iron has lower metallisation (about 85 — 88% on the average) and low carbon content (%) compared to gas based sponge iron (Metallisation of 92 — 94% and carbon content of — 2%). The higher metallisation and higher carbon content of gas based sponge iron provide technoeconomic advantages in steel making operations. ALTERNATIVE INPUT RAW MATERIAL As ...
Heat and Mass Transfer in Reduction Zone of Sponge Iron ...Heat and Mass Transfer in Reduction Zone of Sponge Iron Reactor. Bayu Alamsari,1 Shuichi Torii,1 Azis Trianto,2 and Yazid Bindar2. 1Department of Mechanical System Engineering, Kumamoto University, Kumamoto, Japan. 2Department of Chemical Engineering, Bandung Institute of Technology, Bandung 40132, Indonesia.
Reliable Lubriion Solution for Tyre Lubriion of ...A rotary kiln from a sponge iron or cement plant does not matter where its situated because more or less its area of appliion is the same. By the way, Rotary Kiln is a huge chapter this is quite not possible to include all types of machine parts thar require lubriion in one article.
CASE STUDY ON THRESHOLD PROBLEM Sponge Iron Production ...Fig. 1 Process flow diagram of the sponge iron process with material and energy balanced data ROTARY KILN (RK) (900 C) (1020 C) Total air Flue gas Kiln Feed RC Sponge iron Water Hot Water DSC Dust: 1 T/hr ABC Water Air (+1mbar) Dust: T/h EC Waste gas Water Dust: T/h (+1mbar) (1mbar) ESP (5mbar) Dust 2
