technologies available in India, based on which coal requirements have been evaluated. This evaluation is also based on present GCV based coal grading system. Qualitative requirement of coal in both cement and sponge iron sectors are guided by Indian standards which have been summarized in Table 1 and Table 2 respectively.
The aim of the study was to assess their health-related quality-of-life (HRQoL), and to determine factors that independently predict their HRQoL. Design Cross-sectional study. Setting Coal-based sponge iron plants in Barjora, India. Participants 258 coal-based sponge iron plant workers.
The natural-gas-based DRI processes, however, limit plant locations to places where natural gas is available. On the other hand, coal-based DRI plants are flexible as to plant location, because coal is widely distributed in large deposits and is easy to transport. This has significantly increased the production of coal-based DRI.
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.
SPONGE IRON PRODUCTION FROM ORE -COAL COMPOSITE PELLETS IN TUNNEL KILN . S.C.Khattoi. 1*, G. G. Roy2 1 Project & Engineering Consultancy, Keonjhar, Odisha, India 2 . Indian Institute of Technology, Kharagpur – 721302, India. Abstract: Today India stands as the largest producer of coal based sponge iron through
Sponge iron making is a process in which iron ore lumps (typically 5mm-18mm size) are tumbled with a 'select' grade of iron-coking 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 ...
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 cent)(see Table 1.2: Number of coal based sponge iron plants). Large-scale plants account for only 13 per cent of the total.
coal based sponge iron plant pdf - fysiozuidlarennl. brief process of coal based sponge iron rotary kiln, cost of sponge iron plant in Netherlands pdf Process analytics in the Iron and Steel Industry Siemens Process analytics in the Iron and Steel Industry iron ore, plant so that the coke oven can be heated reducing agents eg coke, Sponge Iron
Dec 24, 2018· Direct reduced iron (DRI), also called sponge iron, is produced from the direct reductionof iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon ...
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.
CII STEEL SUMMIT, NEW DELHI, 4TH NOV., 2009 ALTERNATE IRON MAKING - KEY DRIVER FOR INDIA'S FUTURE STEEL GROWTH Salient Features of S-R Processes Use of Metallurgical Coke requiring good quality coking coal High smelting intensity and hence high productivity Ability to use various types of non-coking coal Environmental friendliness Use of iron ore fines, …
Sep 01, 2014· The aim of the study was to assess their health-related quality-of-life (HRQoL), and to determine factors that independently predict their HRQoL. Design Cross-sectional study. Setting Coal-based sponge iron plants in Barjora, India. Participants 258 coal-based sponge iron plant workers.
PAT and coal based DRI: Sponge Iron industry comes under Iron & Steel sector with sectoral energy reduction target of 1.56 mMTOE(million metric tones of oil equivalent). For a coal based DRI plant with waste heat recovery boiler, power plant and having arrangement for selling surplus electricity, the gate in energy would be coal
Strengths and limitations of this study. This is the first study to explore respiratory health status of coal-based sponge iron plant workers. Respiratory health status measurement is subjective to participants, and thus a valid and reliable tool, the St. George's respiratory questionnaire (SGRQ), was …
Keeping in mind the diverse demands of our customers, we also offer an exclusive range of Coal Based DRI Plant that are functionally advanced in nature and are very cost efficient. We offer these products in different sizes and grades according to the specifications given by our customer.
The industrial development program of any country, by and large, is based on its natural resources. Depleting resources of coking coal, the world over, is …
Jan 22, 2019· Sponge iron or direct-reduced iron (DRI) is a transitional material used in the production of steel. Either coal or natural gas is used in sponge iron production. In India, non coking coal is easily available. 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 .
Jul 29, 2010· We are the largest producer of sponge iron using non coking coal as a reductant and and are having the largest coal based plant in the world. We shall discuss in detail all technical aspects of coal base sponge iron making with particular reference to control of important process parameters to achieve quality sponge iron in this august gathering.
Boudouard reaction, dolomite, DRI, Iron ore, metallization, non coking coal, pellets, reduction, Rotary kiln, Sponge iron, Sulphur, Coal based Direct Reduction Rotary Kiln Process . The coal based direct reduction rotary kiln process was developed for converting iron ore directly into metallic iron without the melting of the materials.
India is the largest producer of sponge iron in the world with the coal-based route accounting for 90% of total sponge iron production in the country. Data on production for the sale of pig iron, sponge iron and total finished steel (alloy + non-alloy) are given below for last five years.
and coal gas refined in coal gasifiers, as well as widely-used natural gas, may be used as reducing gases. u NSENGI, Tenova-HYL and Danieli concluded a strategic alliance agreement for the joint development of DRI steel production plant and expansion of the market of DRI in September 2013. Direct Reduced Iron (DRI) Production Plant
Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coal. Many ores are suitable for direct reduction.
Recovery and utilization of waste heat in a coal based sponge iron process ... A typical sponge iron plant has been investigated to ﬁnd out the potential areas where energy is being wasted. To recover heat from these areas two design modiﬁcations, Case-1 and Case-2, are proposed. Case-1 accounts for preheating
during the past three decades. India, entered the sponge iron industry only in 1980, when the coal based DRI plant of Sponge Iron India Limited (SIIL) was commissioned at Kothagudem, in Andhra Pradesh. Sponge iron is the resulting product (with a metallization degree greater than 82%) of solid state reduction of iron
Jan 16, 2011· It decreases coal consumption as coal is the only source of energy in this plant. For energy integration in sponge iron process pinch technology is applied on the actual data of plant. Based on this data, seven energy conservation cases are identified. Among these, two are selected for detailed analysis based on utility requirement.