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the length of the kiln. To produce sponge iron, iron ore and coal are used as raw material. In the kiln coal is injected from feed as well as discharge side, which is called feed coal and slinger coal, respectively, as shown in Fig. 1. Slinger coal is fed as fines, medium and coarse coal pneumatically; however, feed coal is fed as coarse coal.
sponge iron production in rotary kiln. 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 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 Further Details Coal .
using iron ore fines and noncoking coal in a rotary kiln. Tata Sponge Iron Limited (TSIL) operates three large industrial rotary kilns for producing DRI .
Advantage of Gas Based Vs Coal Based DRI Production: to GAS BASED 1. Clean Technology. 2. Energy Requirement is 20% less than that of rotary kiln based plant. 3. Product suits best steel making qualities. 4. DRI fines (5mm) generated is 5%. Thus, Loss in SMS are less due to low % of fines. 5. Sulphur content in DRI is in range of % ...
Sponge Iron Gas Based Sponge Iron Manufacturer. Natural gas is reformed to enrich with 112 and co mixture and this enriched and reformed gas mixture is preheated in gasbased vertical retort is used for the reduction of iron ore as against a rotary kiln in coal based sponge iron the gases are traveling upwards the charge moves downward by gravity.
We manufacture Sponge Iron Plant on turnkey basis of different functional capacities 100 TPD, 300 TPD, 500 TPD equipment support provided for the plants include Kiln/cooler tyre, Kiln/cooler support roller, Kiln/cooler support roller shaft, Kiln/cooler support roller assembly with bearing housing, Kiln/cooler girth gear, Kiln/cooler pinions, Kiln/cooler pinion shaft, Kiln ...
GasBased Process: This process utilizes natural gas as the reducing agent. Natural gas is reformed to enrich with H2 and CO mixture and this enriched and reformed gas mixture is preheated in gasbased process. A vertical retort is used for the reduction of iron ore as against a rotary kiln in coal based sponge iron process.
This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is 'directly reduced' in the solidstate, using either natural gas or noncoking coal, to produce a highly metallised material, referred to as sponge iron (or direct reduced iron). This intermediate product is subsequently melted in electric arc furnaces or induction furnaces ...
Sponge Iron production using coal involves reducing iron ore with coal or lignite. The reduction is carried out in a Rotary Kiln at a predetermined temperature and controlled atmosphere. The input raw material iron ore, coal and limestone in the required calibrated sizes are fed into the rotary kiln which is inclined and rotates at a required range of speeds.
![[PDF] Simulation of Rotary Kiln Used in Sponge Iron ...](/mblqdpc/54.jpg)
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 .
What is the process for producing sponge iron in coal, Answer midrex technology for gas based DRI for coal based Go, iron in coal based rotary kiln, for proper production Sponge iron can also be used to .
accretion formation inside rotary kiln during sponge iron ... solid bed may rise up to 1300°C. Under such conditions fine materials present inside the kiln may ... coal based rotary kiln of sponge iron production. Further the softening ... Whole set (specimen in ceramic boat) was put inside the furnace. Live Chat
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 ...
Sponge 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.
Use Of Fines For Sponge Iron Production In Coal Based . In conventional coal based sponge iron plant,, kiln feed stream, which consists of iron ore, feed coal and dolomite, is fed to the rotary kiln separate conveyor collects different size fractions of coal stream for injection into the kiln with the help of pressurized air stream from discharge end side.
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 PRODUCTION FROM ORE COAL COMPOSITE, Abstract: Today India stands as the largest producer of coal based sponge iron through rotary kiln process using calibrated ore and non coking coal 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 .
· Most of the plants in India use DRI process—a solid state direct reduction process by which iron ore is reduced to sponge without phase change. Raw material mixiron ore, dolomite and coal are fed to one end of rotary Kiln as well as some fine coal also fed from discharge end and product sponge iron along with char is taken out from the other end.
Feb 14, 2017· The main raw materials for the production of DRI by the rotary kiln process are (i) sized graded iron ore or iron ore pellets, (ii) noncoking coal, and (iii) dolomite in small quantities to scavenge the sulphur. Iron ore of the right quality is the basic input for the coal based direct reduction process.
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