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Aerodynamics Inside A Sponge Iron Rotary Kiln

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

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 aerodynamics...Aerodynamics Inside A Sponge Iron Rotary Kiln Fdp,Aerodynamics Inside A Sponge Iron Rotary Kiln Fdp. Rotary kilns used in the iron pellet production in the gratekiln pelletizing process normally have two asymmetric secondary air channels the aerodynamics in the kiln is strongly connected to the As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. weOPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION IN A,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. Depending on its content of volatile matter, the coal is part-ly blown into the,

Computational fluid dynamics analysis of sponge iron,

01/03/2017· Simulation of rotary kiln for sponge iron process is based on combustion of coal particles and reduction of iron ore. The heat transfer inside the kiln is done through radiation. The model equations used for computation of desired parameters, such as temperature profile and % metallization, are tabulated in Table 3.SPONGE IRON PLANT,Non-coking coal is required in sponge iron production, since the coking reaction leads to formation of rings inside the kiln. Practically permissible caking index is 3 maximum for rotary kiln operations. 2) Low ash contents:- High ash leads to under utilization of the kiln volume available for reduction. It also increases the consumption of,A Thesis Submitted for Partial Fulfillment of the Degree,,6.2 2D & 3D model of Sponge iron Rotary Kiln 39 6.3 Faces of lobe blower. 39 6.4 Coal throw and solid out face at discharge end of kiln. 40 6.5 Cuts made to represent air pipes. 40 6.6 Wall of air pipe. 41 6.7 Face of air pipe. 41 6.8 Overall view and internal view of generated Mesh. 42 7.1 Three Dimensional PDF Table 44 7.2 Temperature profile at various after start up of flow ratio 9:1 & 8:2,

Energy survey of the coal based sponge iron industry,

01/09/2015· Inside kiln is lined with refractory and inclined at 2.5°. Due to inclination and rotation, material in the bed of the kiln moves along the axis. Both end of rotary kiln is provided by mechanical air sealing so that no ingress of air takes place. As the charge moves through the kiln, it is heated by the gases which flow in opposite direction to the charge. Inlet side of the kiln, blowing of a controlledSPONGE 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 process. Iron ore fines and the low grade beneficiated,Modelling and optimization of a rotary kiln direct,,for cement production and sponge iron production. Hatch has developed a proprietary one-dimensional kiln model to evaluate designs for clients (Haywood et al., 2009). This tool has been utilized for a variety of pyrometallurgical applications including ferrovanadium, nickel carbonate, nickel laterite, iron ore reduction, and spodumene (lithium) production. In this paper the direct reduction of,

OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION IN A ROTARY KILN

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. Depending on its content of volatile matter, the coal is part-ly blown into the,Simulation of Rotary Kiln Used in Sponge Iron Process,,Simulation of Rotary Kiln Used in Sponge Iron Process Using ANN IACSIT International Journal of Engineering and Technology, Vol. 6, No. 2, April 2014 DOI: 10.7763/IJET.2014.V6.673 95 Abstract—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,SPONGE IRON PLANT,Non-coking coal is required in sponge iron production, since the coking reaction leads to formation of rings inside the kiln. Practically permissible caking index is 3 maximum for rotary kiln operations. 2) Low ash contents:- High ash leads to under utilization of the kiln volume available for reduction. It also increases the consumption of,

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

Data-1 includes temperatures profiles and air inlet at positions, AT-1 to AT-3 and MF-1 and MF-2, inside the kiln whereas, flow rates of iron ore, feed coal, slinger coal and sponge iron is,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 process. Iron ore fines and the low grade beneficiated,Modelling and optimization of a rotary kiln direct,,for cement production and sponge iron production. Hatch has developed a proprietary one-dimensional kiln model to evaluate designs for clients (Haywood et al., 2009). This tool has been utilized for a variety of pyrometallurgical applications including ferrovanadium, nickel carbonate, nickel laterite, iron ore reduction, and spodumene (lithium) production. In this paper the direct reduction of,

Modelling and optimization of a rotary kiln direct,

Rotary kilns are used for a range of mineral processing operations. Kilns range in size from 2–6 m in diameter and can be 50–225 m long with an operating mass of up to 3000 t. Two of the most common applications are cement production and sponge iron production. Hatch uses a proprietary one-dimensional kiln modelCharacterization of Ring Deposits Inside a Quicklime,,Characterization of Ring Deposits Inside a Quicklime Producing Long Rotary Kiln,magnesite,10 iron pellet,11−13 sponge iron,14 ferro-nickel alloys,15 and lime mud reburning,16−19 only a few studies on ring formation in limestone feed rotary kilns for quicklime production can be found.20,21 Although the principle of the rotary kiln remains the same, the process conditions and raw,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

ORISSA SPONGE IRON AND STEEL LTD.

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. The DRI (metallic) and the non metaliks like unused coal, coal ash etc. discharged from the cooler and conveyed by the,(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 plant[15]. representation of overall reactions happening in a kiln based sponge iron,SPONGE IRON PLANT,Non-coking coal is required in sponge iron production, since the coking reaction leads to formation of rings inside the kiln. Practically permissible caking index is 3 maximum for rotary kiln operations. 2) Low ash contents:- High ash leads to under utilization of the kiln volume available for reduction. It also increases the consumption of,

Case Studies in Thermal Engineering

2D CFD model of rotary kiln of sponge iron process is developed to study the effects of angle of inclination, number of rotation and mass flow rate of iron ore on output parameters. Based on grid independent test for temperature profile optimum mesh size is selected. The result shows that optimum angle of inclination, number of rotation and flow rate of iron ore are found as 2.7 degree, 4,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 process. Iron ore fines and the low grade beneficiated,Modelling and optimization of a rotary kiln direct,,for cement production and sponge iron production. Hatch has developed a proprietary one-dimensional kiln model to evaluate designs for clients (Haywood et al., 2009). This tool has been utilized for a variety of pyrometallurgical applications including ferrovanadium, nickel carbonate, nickel laterite, iron ore reduction, and spodumene (lithium) production. In this paper the direct reduction of,

Characterization of Ring Deposits Inside a Quicklime,

Characterization of Ring Deposits Inside a Quicklime Producing Long Rotary Kiln,magnesite,10 iron pellet,11−13 sponge iron,14 ferro-nickel alloys,15 and lime mud reburning,16−19 only a few studies on ring formation in limestone feed rotary kilns for quicklime production can be found.20,21 Although the principle of the rotary kiln remains the same, the process conditions and raw,Modelling and optimization of a rotary kiln direct,,Rotary kilns are used for a range of mineral processing operations. Kilns range in size from 2–6 m in diameter and can be 50–225 m long with an operating mass of up to 3000 t. Two of the most common applications are cement production and sponge iron production. Hatch uses a proprietary one-dimensional kiln modelORISSA SPONGE IRON AND STEEL LTD.,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. The DRI (metallic) and the non metaliks like unused coal, coal ash etc. discharged from the cooler and conveyed by the,

Coal based Direct Reduction Rotary Kiln Process – IspatGuru

Chemical reactions take place inside the rotary kiln. The cross section of the rotary kiln is at Fig 1. Fig 1 Cross section of rotary kiln . Coal based direct reduction process is based on the solid reducing agent which is non-coking coal. The reaction takes place at high temp (1000 deg C to 1100 deg C). Coal plays a dual role in the kiln. Part of coal is used as fuel to supply the desired,SPONGE IRON UNIT - SEIL,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 Iron is conveyed to the Storage Silos for dispatch.,