important features of sponge iron in rotary kiln

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Sponge Iron Production in Rotary Kiln, Sarangi, A. Sarangi ...

Sponge Iron Production in Rotary Kiln - Kindle edition by Sarangi, A. Sarangi, B.. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Sponge Iron Production in Rotary Kiln.

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Modelling and optimisation of directreduction of iron ore ...

The. critical step in this process is the reduction of iron ore by coal in the rotary kiln. In coal-based sponge. iron rotary kilns, iron ore, coal and dolomite are fed to the kiln as separate ...

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Advances in rotary kiln sponge iron plant | Prasad, K. K ...

Consequently, sponge iron making in rotary kiln flourished first in South Africa, and now India produces over 70% of coal based sponge iron in the world. It is very easy to reduce the higher oxides of iron to FeO stage. One only needs to meet the heat demand, the reductant requirement and the temperature level.

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(PDF) Operation of Coal-Based Sponge Iron Rotary Kiln to ...

Operation of Coal-Based Sponge Iron Rotary Kiln to Reduce Accre tion Formation and Optimize Quality and Power Generation Shubhajit Mondal 1, Puneet Choudhary 1, Sam purna Borah 1, Brahma Deo 1 ...

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Sponge Iron | SpringerLink

· An iron ore has the following composition: 58.1% FeCO 3, 11.5% SiO 2, 11.7% CaCO 3, 10.5% Al 2 O 3 and 8.2% H 2 O. It is calcined in a rotary kiln furnace fired with coke containing 84% C, 13% ash and 3% H 2 O. Enough air is supplied to burn the …

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FUTURE OF SPONGE IRON IN INDIA AND PLANT DESIGN …

· producing sponge iron at low price. For the proper design of such a Rotary Kiln and Cooler with all its ancillaries, the following metallurgical and engineering de-sign. data is required to be followed for a 50 Ton per day experimental sponge iron plant, which would form the main guide lines for the designers lof industrial size plants in the near

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DRI UPDATE - Sponge Iron Manufacturer India

· 2. ED, SIMA requested the participants to volunteer to spare their rotary kiln for carrying out the R&D for exploring the use of Syn Gas in the rotary kiln. Mr. T Srinivasa Rao, MD, Balajiswamy Premium Steels Pvt Ltd offered his 50TPD kiln for this purpose. 3. Presentation from Tata Sponge Iron Ltd was very much liked and lot of the people showed

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SPONGE IRON - BHAGWATI POWER & STEEL LIMITED

· SPONGE IRON. Iron ore (haematite) and non-coking coal are the prime raw materials for the production of sponge iron. These are charged into a rotary kiln in requisite proportion along with some dolomite. Coal plays a dual role in the process by acting as a reductant as well as a fuel for providing heat to maintain the requisite temperature ...

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Sponge Iron – A-One Gold Steel

Features. 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.

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Sponge Iron :: TMT Next - Building The New

Sponge iron making is a process in which iron ore lumps (typically 5mm-18mm size) are tumbled with a 'select' grade of iron-coking coal little dolomite inside an inclined rotary kiln and control combusted in the presence of air for about 12 hours before the products are …

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WELSPUN STEEL LIMITED

For the direct reduction of iron ore the main furnace used is rotary kiln. The rotary kiln is the refractory lined cylindrical vessel on which blowers are mounted & the air pipes, to provide combustion air to the inside of the kiln. During lite up there is a start up burner at the kiln discharge end which is oil fired to heat up the rotary kiln.

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THE KRUPP SPONGE IRON PROCESS PRODUCTION AND …

· Essential features of the process Fig. 1 shows the two variants of the process, one using lump ore and the other fine ore or con-centrates. Lump ore is charged together with the reductant and a desulphurizing agent into an inclined rotary kiln, where it is heated by a coun-tercurrent flow of hot gas and reduced to sponge iron.

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Sponge iron in steel's future (Journal Article) | ETDEWEB

@misc{etde_6653681, title = {Sponge iron in steel's future} author = {Rose, S} abstractNote = {This article includes a description of the Lurgi direct reduction process as modified by Stelco, which uses sub-bituminous coal or lignite as reductant in a rotary kiln. The findings of a published economic comparison of the process with blast furnace reduction is criticized, and alternative figures ...

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[PDF] Simulation of Rotary Kiln Used in Sponge Iron ...

In the present study, estimation of actual output parameters is carried out for a sponge iron production process by designing a Multilayer Perceptron model that uses a momentum learning algorithm. For this purpose data of temperature profile of rotary kiln are collected from typical sponge iron plant, which correlate four air inlets and twelve temperatures measured at different lengths of the ...

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(PDF) Aerodynamics inside a Sponge-Iron Rotary Kiln and ...

Abstract. Sponge iron is being increasingly made using coal in a rotary kiln in India. In the design and operation of the kiln, aerodynamics plays an important role. So far, all adjustments of ...

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Flow of materials in rotary kilns used for sponge iron ...

The present work identifies the basic features of burden movement in a rotary kiln. The cold model study was conducted with iron ore as the feed material to determine the influence of length to diameter ratio (L/D) of a rotary kiln on the filling degree, hold-up, and residence time of the charge.An empirical equation correlating different operating variables has been derived on the basis of ...

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Sponge Iron Production in Rotary Kiln - Arabinda Sarangi ...

The increase in the demand of sponge iron is also due to the fact that it is used as a substitute for coking coal which is available in scarcity in the world. This book comprehensively deals with the production of sponge iron in the rotary kiln. The book is divided into 17 chapters. The initial chapters give a brief on the fundamental theories and basic principles of sponge iron production ...

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Sponge Iron – Prakash Industries Limited

Sponge iron is a highly processed form of iron ore which contains metallic iron in the range of 83-88% obtained by direct reduction without melting it. Due to high porosity, the resulting iron is called sponge iron. It is used as a raw material for manufacturing steel …

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Computational fluid dynamics analysis of sponge iron ...

· The geometry of rotary kiln of sponge iron process is developed using GAMBIT 2.4.6. Dimensions of kiln are 80 m length and 4 m internal diameter. The kiln is inclined to 2.5 degree to the horizontal and rotated with 4.3 rpm. Bed material consists of iron ore, coal and dolomite, enters the kiln through feed end.

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What are the factors that affect the conversion rate of ...

· Production technology of sponge iron. The production of sponge iron is made by rolling iron oxide sheet, roasting at high temperature in tunnel kiln or rotary kiln, and reducing iron oxide by pulverized coal. The metal conversion rate has an important effect on the quality and production cost of the final reduced iron powder. The reduction ...

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USE OF SPONGE IRON - Cradle of technical excellence

· Problems of Rotary Kiln process a)Low productivity. b)Building up of accretions or ring formation. c)Erratic operation. d)Heat loss through exit gas. e)Sponge iron contains low carbon. Minimization of these problems: a)Low productivity-Productivity can be improved by: 1)High reactivity coal can be used. 2)Pick up of ore with high reducibility.

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SPONGE IRON PLANT

· Sponge 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 pre-determined ratio. The rotary kiln is slightly inclined at an angle 2.5 deg and rotated by

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Method for Calculating Yield of DRI Production in Rotary Kiln

· 12/16/2010 3:58 AM. we would like to know the correct method for calculating the yield for working the production of Sponge Iron in a rotary kiln. we have been evaluating the yield for production using the following formula : P = (Q-%TM)X (% Fe (T) in ore - % LOI - …

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Sponge iron making process - SlideShare

· ROTARY COOLER The product is conveyed to the product separation and storage building The product is Sponge iron and char Place that spraying a controlled amount of water directly into hot solids and by spraying additional water outside the …

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