Sponge 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 de-sulphurizing agents (lime- stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge iron.
Jan 01, 2010· 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, commercially used DR (direct reduction) processes and physico-chemical principles of sponge iron production.
for the production of sponge iron in a 34 feet long rotary kiln were successfully conducted at the National Metallurgical Laboratory using pellets made from Donimalai haematite ore and bituminous coal from Maharashtra also nut coke. The iron ore was of high grade with 65-66% Fe, 1.6-2.05% Si02 and 3.0-3.8 per cent A1 203. The
II. Rotary kiln: Operation and construction details A 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
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 &
3.3 Schematic of optimised Rotary kiln sponge iron making process 21 4.1 Industrial view of Sponge Iron making Rotary Kiln 24 4.2 Schematic view of internal heat exchange in Rotary kiln 26 4.3 Schematic view of Lobe Blower. 27 4.4 Schematic view of Air & material flow in Rotary kiln 27 4.5 Filling of Bed Geometry 28
The hot product discharged from the kiln is indirectly cooled in a rotary cooler by spraying water on the shell of the cooler. The discharge from the cooler is conveyed through a belt conveyor screened and magnetically separated. Sponge iron and non-magnetic components are separated and stored in separate bins for further transfer.
Rotary kiln is cylindrical in shape and is 80m long having 4.2m internal diameter. This is the reactor of the process where reduction as well as combustion reactions are carried 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:
1. Krupp Sponge Iron Process The Krupp. Sponge 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 de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge
We supply Our Sponge Iron Products to various Induction Furnace, Foundry Division and also for Blast Furnace. Sponge Iron Rotary Kiln Process. In this process, a Refractory lined Rotary Kiln is used for reduction of iron ore in solid state. The Kiln is mounted with a slope of 2.5 % downwards from the feed end to discharge end.
sponge iron plant rotary kiln 1..Brief description of clinker rotary kiln : Our company owns the magnesium production line. As a kind of qualified material crushed by the crusher, the raw material-dolomite is calcined till it became white by rotary kiln, being cooled by the cooling machine and then mix it evenly with silicon powder (75%) and silica powder (including GaF2 fluorite=95%).
Rotary Kiln Sponge Iron Plant Pdf Rotary Kiln Bkam. Pdf Modeling Of Rotary Kiln For Sponge Iron Processing. Though coal is administered into kiln at both inlet and outlet end for two different purposes a feed coal enters into kiln at upper end along with iron ore having size of 4 to 20 mm in diameter fig 3 1 31material balance in a rotary kiln sponge iron plant15 representation of overall
Nov 09, 2014· Making process iron ore to sponge iron ROTARY KILN 9. ROTARY KILN 10. ROTARY COOLER The product come to the water cooled Where its temperature reaches to 80-100 C 11. 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
In the DRI plant, production of sponge iron using a solid reductant involves reducing iron ore (lumps/pellets) with carbonaceous materials like coal or lignite. The reduction is carried out in a rotary kiln (which is inclined and rotates at a predetermined range of speeds) at a stipulated temperature (850°C -1050°C).
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, commercially used DR (direct reduction) processes and physico-chemical principles of sponge iron production.
Aug 03, 2011· COAL INJECTION IN ROTARY KILN K.Ramu, C.Ramesh, A.Rajasekaran During the process of manufacture of sponge iron, coal injection plays a very vital role in maintaining the product quality. Due to highly endothermic nature of Boudouard reaction, heat has to be continuously supplied in entire reduction zone of rotary kiln.
Directly reduced iron looks like sponge in texture due to pores and hence is called sponge iron. Iron Ore after due reduction inside the kiln is discharged to a rotary cooler of 3.5 mtr. Dia x 50 mtr long from DR1 and 3.8 x 50 mtr long from DR2 for cooling the DRI from 10000C.
Free Download Sponge Iron Production In Rotary Kiln Book. Nov 12 2012 Sponge Iron Production in Rotary Kiln Bidyapati Sarangi This book comprehensively deals with the production of sponge iron in the rotary kiln or download a FREE Kindle. Get Price
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 8001200 °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
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 non-coking coal [Patra et al, (2005)]. The reduction process is carried out in an inclined horizontal rotary kiln, which rotates at a programmed speed.
It has been shown earlier that the sponge iron rotary kiln is a chaotic, dynamical (nonlinear, time-varying) system   . The present work is the first application of both OSAA and
Computational fluid dynamics analysis of sponge iron rotary kiln. Case Studies in Thermal Engineering 2017, 9, 14-27. DOI: 10.1016/j.csite.2016.11.001. Ashish Agrawal, P.S. Ghoshdastidar. Numerical simulation of heat transfer during production of rutile titanium dioxide in a rotary kiln. International Journal of Heat and Mass Transfer 2017, 106
Sponge Iron Production in Rotary Kiln Arabinda . 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
6. The product i.e. Sponge Iron and semi burnt coal are discharged from the kiln through a rotary cooler. The cooler is 12M in length and water is sprayed directly as well as indirectly for cooling the material. The material is cooled down to 100oC and fed to magnetic separator for separating the sponge iron and non-magnetic (char). The Sponge
Operation of Coal-Based Sponge Iron Rotary Kiln to Reduce Accretion Formation and Optimize Quality and Power Generation. June 2019; Conference: AISTech 2019 Proceedings of the Iron
Jul 29, 2010· In general sized iron ore of 5-18mm is used in the process of manufacture of sponge iron on all types of rotary kiln with +16mm not exceeding 15-20%.The mean particle size of iron ore shall be restricted to 11mm in order to achieve uniform Fe metallic of all grain size fraction of the product.
Sep 01, 2018· 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.
Mar 01, 2017· Rotary kiln is the primary equipment in sponge iron industry, which is used to reduce iron ore to metallic iron i.e. Fe. It is called sponge iron. Rotary kiln is widely used in cement and steel industries. The production capacities of these industries depend significantly on the performance of rotary kiln.
Jan 30, 2011· Sponge Iron Production in Rotary Kiln, Sarangi, A. Sarangi, B., eBook - Amazon Sponge Iron Production in Rotary Kiln Kindle Edition by B. Sarangi, A. Sarangi (Author) Format: Kindle Edition 2.7 out of 5 stars 3 ratings
Keywords: Sponge Iron, Heat Transfer, Rotary Kiln . 1. Introduction . In Rotary kiln, carbon is charged from either end, in one end in the form of coal particles and in another in form of coal lumps. The coal reacts with air to form carbon monoxide which then reduces iron oxide (ore) to iron. So, in a kiln,
· OSIL is a development oriented company and OSIL owns many patents to its credit including the patent for OSIL process: A method of continuous manufacture of sponge iron and a ported rotary kiln
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
Coal Based Rotary Kiln for Direct Reduced Iron / Sponge Iron (100 TPD, 350 TPD, and 500 TPD) Solid-state reduction of Iron Ore using either coal/gas as a medium of reduction to produce a substitute raw material for steel making is termed as Direct Reduced Iron (DRI). Since DRI is produced by removing oxygen from iron ore, its structure is just
Jun 30, 2011· 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
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
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