rollerkiln for sponge iron
Clay Brick Fire Brick Sponge Iron Roller Kiln A roller kiln is continuous kiln with carrier roller to drive the products forward its transmission type includes chain wheel Get A Free Quote Sponge Iron Tunnel Kiln Sponge Iron China Sponge Iron Tunnel Kiln Sponge Iron Suppliers Directory on AlibabaManufacturer of Sponge Iron Plant Kiln shell Gear ...
sponge iron process
The reduced iron ore -SPONGE IRON with unburnt char from rotary kiln gets discharged into a Rotary Cooler. The heat will be dissipated indirectly by water spraying into the outside of Cooler Shell. The material gets cooled to around 1200C.
rotary kiln furnace in sponge iron plant
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).
Evaluation of new equipments for utilization of waste heat ...
Sponge iron is produced by direct reduction of iron ore in the presence of coal and air and thus is also called direct reduced iron (DRI). Since the last few years, sponge iron has emerged as an alternate raw material for steel making. Thus, the Indian Government has recognized sponge iron as a vital sector for growth of Indian steel industries.
tunnel kiln thermodynamic process
Production Sponge Iron Through Tunnel Kiln Process. 04-04-2019· Tunnel kiln thermodynamic 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 .
Energy integration of sponge iron production process
Keywords- Sponge iron plant, Heat integration, Material and Energy balance I. INTRODUCTION Sponge iron is a metallic mass with honeycomb structure. It is a form of iron produced from direction reduction of iron oxide below the fusion temperature of iron ore (1535ºC) by utilizing hydrocarbon gases or carbonaceous fuels as coal.
Direct Reduction Process - an overview | ScienceDirect Topics
The sponge iron formed in the direct reduction process is then melted in an electric arc furnace. In these processes, the iron oxides in the ore are reduced to metallic iron. In the next step, the raw iron is usually dropped into a torpedo ladle car where reagent is added to purify the iron from sulfur.
Development of energy conservations scenarios for sponge ...
This paper presents an approach to find the best modification in the coal-based 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 ...
DRI Sponge Iron Plant factory, Buy good quality DRI Sponge ...
Cement Incinerator DRI Sponge Iron 350 Tpd Rotary Kiln. Product name:Sponge iron production line. Applicable Industries:Manufacturing Plant, Construction works, Energy & Mining
A Thesis Submitted for Partial Fulfillment of the …
Sponge iron, also called Direct-reduced iron (DRI),[2] is produced from direct reduction of iron ore (in the form of lumps, pellets or fines) by a reducing gas produced from natural gas or coal. The reducing gas is a mixture majority of hydrogen (H 2 ) and carbon monoxide (CO) which acts as reducing agent.
Sponge Iron :: TMT Next - Building The New
Sponge Iron. 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 Ore Pellet is used for reduction. After reduction of iron ore pellet the product resembles sponge because of pores left behind after ...
Steel Sector – Breslau Infrastructure & Technology (P) Limited
Direct Reduced Iron (DRI) also called Sponge Iron is produced by direct reduction of Iron ore. This reduction is carried out in a rotating kiln by passing a reducing gas or carbon over the Ferrous Oxide and removing the Oxygen therein. DRI is fed either I/O Pellet or I/O Lumps.
Calculation Of Iron Ore Rotary Kiln
Modelling and optimization of a rotary kiln direct Illustrative examples are included for the case of a generic rotary kiln ironore reduction process Rotary k. Home. Products. About Us. News. Contact Us [email protected] +86 371 67999188. ... hsm stone coal roller crusher for granite ore iron;
kiln & furnace
A muffle rotary kiln is indirect combustion kiln, it applies to high grade iron ore and mill scale, in the condition of reducing atmosphere and high temperature, the iron ore is reduced and volumn shrink, to become high density of DRI ( HDDRI ).
Recovery and utilization of waste heat in a coal based ...
With the availability of raw materials, high demand of sponge iron and less payback period, sponge iron industry has emerged as a profitable venture. However, due to lack of proper integration techniques, non-optimal process parameters, high-energy con-sumption and old running process technology, the industries are facing a setback in market.
Biochar in the Höganäs sponge iron process – techno ...
Höganäs Sponge Iron process is one of the major production processes used for iron powders. Here a solid-state reduction of iron ore concentrate with a mixture of coke, anthracite, and limestone is used to produce sponge iron units that are processed further to saleable iron powder products. The reduction takes place in tunnel kilns at ...
(PDF) Operation of Coal-Based Sponge Iron Rotary Kiln to ...
There is fluctuation in the quality of sponge i ron in the range of 78-85% (metallic iron). It is not desirable to get quality of product b elow 78%. Usually, a higher temperature is required for...
A Mathematical Modelling and Simulation for Reduction in ...
A Mathematical Modelling and Simulation for Reduction in Thermal Losses by Painting DRI Kiln S. S. Chakrabarti1, L. R. Bhandarkar2, R. K. Sangewar3, S. P. Singh4 1, 2,3 O P Jindal Institute of Technology, Raigarh, India, 4 DRI-1, Jindal Steel and Power Limited Raigarh, India Abstract - Rotary Kilns has been widely used for processing minerals, producing cement, calcining of rotary
A Thesis Submitted for Partial Fulfillment of the Degree ...
3.3 Schematic of optimised Rotary kiln sponge iron making process 21 ... ores are suitable for direct reduction process. Sponge iron is produced in a powdered form so, it acts as a good raw material that can ... technology. Iron ore is reduced in solid state at 800 to 1,050 °C (1,472 to 1,922 °F) either by
SPONGE IRON | Rashmi Group
Physical factors like Temperature & Air volume in the compartment of the Kiln determine the course of the reduction reaction, known as the 'BURWAD' reaction. Reactants eventually get reduced and Sponge Iron mixed with Charcoal is obtained. A magnetic Separator is used to extract the Sponge Iron. Abiding by strict quality standards, a sample of ...
SPONGE IRON - WELCOME TO IGR INDIA
Tunnel kiln is fired with producer gas from coal gasification. Reduction temp. is 1140 -1200 degree and reduction time -42 hours. Sponge iron produced from saggers is in briquette from for further end use.Any removal of impurities in above sponge iron could be carried out by Magnetic separation.
Simulation of Rotary Kiln Used in Sponge Iron Process ...
out. The role of kiln is to convert the raw material (iron ore, coal and dolomite) into the sponge iron [8]. 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.
THE EFFECT OF REDUCTION TIME AND SIZE DISTRIBUTION …
3.1. Effect of Time Reduction in a Rotary Kiln based on a Percentage of Metallization of Sponge Iron Figure 4 shows the effect of reduction time based on a percentage of metallization (removal of oxygen) of sponge iron with variations in the pellet diameter, i.e. Figures 4a and 4b for pellet diameter of (-12+8mm) and (-20+12mm), respectively.
Reduction Kinetics of iron ore pellets and effect of binders
carbonates. Of all the iron bearing minerals used for blast furnace smelting, haematite represents the largest proportion. When chemically pure haematite contains around 70% and magnetite around 72.4% of iron. DRI or Sponge Iron is a porous solid-state product of direct reduction process, which is produced either in lump or pollet form.
The Effect of Reduction Time and Size Distribution of ...
Meanwhile, the reduction temperature was fixed, i.e. 1100oC. The maximum metallization of sponge iron achieved at a residence time of 3 hours was 99.50% for the average pellet diameter of (-12+8mm). Keywords. Coconut shell charcoal, Direct reduction, …
(PDF) Modeling of Rotary Kiln for Sponge Iron Processing ...
Modeling of Rotary Kiln for Sponge Iron Processing Using CFD package (ANSYS 13.0) A Thesis Submitted for Partial Fulfillment of the Degree Award Of MASTER OF TECHNOLOGY In CHEMICAL ENGINEERING Under the supervision of. Radhebihari Upadhyay. …
sl rn process in south africa - sealsbodyguardagency.ch
coal based sponge iron process in south africa. The most popular process adopted by coal based sponge iron plants is SL-RN The castables installed in a rotary kiln »More detailed. sponge iron process. Flow chart of SL/RN process has been shown in fig. 1.Sized Iron Ore and Non Coking 1985 Various tests on raw materials to be used for coal based ...
Direct Reduction of Iron Ore | SpringerLink
In the search for a pure, available iron source, steelmakers are focusing their attention on Directly Reduced Iron (DRI). This material is produced by the reaction of a low gangue iron ore with a hydrocarbonaceous substance. Commercially, DRI is generated in four different reactors: shaft (moving-bed), rotary kiln, fluidized bed, and retort (fixed-bed). Annual worldwide production capacity ...
Tpd Sponge Iron Kiln Dimensions, Rotary Kiln
Coal Based Direct Reduction Rotary Kiln Process Ispatguru. 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 25 degree and rotated by ac variable speed motor at a variable speed ranging from 02 rpm revolutions per minute to 10 rpm
WELSPUN STEEL LIMITED
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. The quality of sponge iron is primarily ascertained by the percentage of ...