Title COAL BASED SPONGE IRON PLANT Author bf Created Date 1192009 12049 PM
Sep 01, 2015 In conventional coal based sponge iron plant, Fig. 1, kiln feed Stream no. 1, which consists of iron ore, feed coal and dolomite, is fed to the rotary kiln RK.A separate conveyor collects different size fractions of coal Stream no. 5 for injection into the kiln with the help of pressurized air Stream no. 4 from discharge end side.
Sep 04, 2014 Thus, the sector depends mostly on coal-based sponge iron and nearly 80 of the total coal-based sponge iron plants are located in India. 1 About 60 of this production comes from small-scale industries in the unorganised sector with poor pollution control facilities. 1 During the past decade, these sponge iron plants have rapidly grown in the ...
Objectives During the last decade, coal-based sponge iron plants, a highly polluted industry, have grown rapidly in Barjora, India. Understanding their workers perception of health is essential in people-centered healthcare. The aim of the study was to assess their health-related quality-of-life HRQoL, and to determine factors that independently predict their HRQoL.
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 ...
Jun 19, 2013 Pollution in the Coal Based Sponge Iron Industry in India. Best ppts by Akansoft Iron and steel industries 6255 views Like Liked . Cleaning 3 Chamber incomplete combustion of Plant, sometimes the Waste coal, poor oxidation of ore. Sponge Iron units do not use the pollution control equipment. More detailed
Sponge iron is produced primarily both by using non coking coal and natural gas as reductant and therefore classified as coal based and natural gas process respectively. Presently, there are 118 large and small sponge iron plants in India- 115 of them are coal based while only 3 are natural gas based. The advantages of sponge iron are
The major quality requirements of coal for Sponge iron production are- 1 Non-coking characteristics 2 Low ash content 3 Low sulphur content 4 Good reactivity 5 High ash fusion temperature 6 Medium volatile matter 1. Non-coking character- Non-coking coal is required in sponge iron
Jul 29, 2010 The carbon content in sponge iron produced by coal based rotay kiln processes are generally low and is in the range og 0.08 to 0.20.The carbon content in gas based processes can be controllrd to a level of 1.5 to 2.0 based on requirement for steel making. Size Distribution
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 ...
MICRO INTEGRATED STEEL PLANT 4 Coal Crusher Iron Ore Crusher Sponge Iron DRI Kiln MET Coke Cold Briquette Mn Fines Briquette Fluxesi.e. Dolomite, Quartz, Lime stone, etc. Blast Furnace Induction Furnace WHR Boiler AFBC Boiler Power STEAM Generation DOLO-CHAR FLUE GAS POWER SPONGE IRON PIG IRON C C M Rolling Mill FINISHED Products Mill Scale ...
from the DRI production plant will be reduced by 50 - 100 kg. 3. Increase in the productivity of blast furnaces The productivity of a blast furnace increased with charging DRI with large metallic iron content to it. When 100 kg of DRI is used for the production of 1 ton of molten iron, the production of molten iron increases by 10 - 15 . 4.
Till date, as per official figures, about 7000 workers have been employed in 33 large coal based sponge iron units in West Bengal. Of these about 10 are hired against daily wage from nearby localities. Around Rs. 10 12 crores are required to produce 100 metric tons per day,
With such dimension of notion WE in our Sponge Iron Manufacturing process through 4 Kilns 1 350T and 3 500T laid up the best DRI making process in India. It is Coal Fuel based DRI. Coal based Sponge-iron is a metallic product produced through direct reduction of iron ore in the solid state .As such it is also known as Direct Reduced Iron ...
5.1 SPONGE IRON PLANT There is a plan to install 4x100 TPD DRI kilns for production of 1,20,000 TPA sponge iron. Manufacturing Process The proposed plant uses the coal based process in which iron oxide in pelletiron ore will be reduced with non coking coal in a rotary kiln to make sponge iron.
West Bengal the average capacity of a sponge iron plant is 0.0731 MTPA20. In terms of numbers, medium scale plants account for 53 per cent of the total plants in India followed by small scale 34 per centsee Table 1.2 Number of coal based sponge iron plants. Large-scale plants account for only 13 per cent of the total.
Sponge Iron Production Process Process description This is the case study of typical coal based sponge iron plant of 500 tonne per day capacity. The process flow diagram PFD of the sponge iron process is shown in Fig. 1. Different streams in the PFD are
A. Choudhury 45 2Fe 2O 3 320 6CO 168 4Fe 224 6CO 2 264 2. The figures in the bracket indicate the weight of the reactants and products. From the above equations we get 72 Kg carbon or 144 Kg coal 96 Kg O 2 or 417 Kg air 320 Kg ore reacts to gene rate 224 Kg of sponge iron amp 264 Kg of CO 2.Or in other words, to produce 1 Kg of pure sponge iron the stoichiometric requirements ...
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 0.003-0.01 which is very low. 6. Average Metallization is 92-94 COAL BASED 1. Prone to Pollution 2. High Energy Requirement. 3.
Conducting complete energy audit both process and utility of a sponge iron unit is challenging as there is no laid down procedure to audit the process side. Further, the average heat to power ratio kW th kW e of sponge iron plants ranges from 251 to 311. This shows that the manufacturing process mostly uses thermal energy and application of electrical energy is insignificant.
Jul 31, 2013 1. Pollution in Coal Based DRI Summer Internship Project, 2012 Supervised by Susmita Dasgupta susmita.dasguptahotmail.com 1 2. DRI, or directly reduced iron is a method of producing solid iron from iron oxide 2 3. Iron from iron ore can be In solid form In solid form, iron ore can be 1. DRI produced in coal based kilns 2.
The Project based on SLRN rotary kiln process of Lurgi which is the best Coal based technology globally. Water Supply Sources of make up water, for the sponge iron plant of Bihar Sponge Iron Limited Chandil, are ground water from bore wells location within the plant boundary and surface water from the River Swarnrekha.
Jun 01, 2012 Sponge iron is produced primarily both by using non-coking coal and natural gas as reductant and therefore classified as coal based and gas based process respectively. Due to promising availability of coal of 264,535 million tonnes the coal based sponge iron plants share the major amount of its production 2 .
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 ...