importance of coal sizzling in sponge iron

Respiratory health status and its predictors: a cross ...

A good example would be to have a cohort study comparing coal-based sponge iron factory workers with other types of factory workers (healthy worker effect), rather than with the general population. In conclusion, less than half of the coal-based sponge iron plant workers in Barjora have the best possible respiratory health status.

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Direct reduction of iron (DRI) – ‘Sponge iron’

 · Direct reduction of iron (DRI) – ‘Sponge iron’, another method of producing iron: All steelmaking processes require the input of iron bearing materials as process feedstock. For making steel in a basic oxygen furnace, the iron bearing feed materials are …

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sponge iron process

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.

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Proceedings of the World Congress on Engineering 2011 Vol ...

Generation of Energy Conservation Measures for Sponge Iron Plants Anil Kumar Prasad, Vivek Kumar and Shabina Khanam, Member, IAENG Abstract - During the operation, a tremendous amount of heat is generated in the coal based sponge iron plant and a significant part of this heat associated with the waste gas, remains unutilized.

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Extract more sponge iron to boost steel production, jobs

6  · Such coal based sponge iron making from iron ore, is popular both in India and China. However, in the world almost 80% of sponge iron is being produced by gas based DR process.

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Energy survey of the coal based sponge iron industry ...

The actual process of the coal based sponge iron production is based on SL/RN process (jointly developed by the Steel Company of Canada, Lurgi Chemie, Republic Steel Company and National Lead Corporation in 1964), which works on direct reduction of ore.This process is adopted by worldwide conventional sponge iron industries.

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Health-related quality-of-life of coal-based sponge iron ...

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 ...

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Why Is Coal Important?

Coal is important because it is a reliable and an affordable source of energy in many countries. It is responsible for about 40 percent of the electricity generated in the world. Coal is a crucial ingredient in manufacturing industries. There are two types of coal: metallurgical and thermal. Thermal coal is used for power generation.

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Coke (fuel) - Wikipedia

It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern. The unqualified term "coke" usually refers to the product derived from low-ash and low-sulfur bituminous coal by a process called coking.

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AN INVESTIGATION FOR GENERATION OF ENERGY …

2. COAL BASED SPONGE IRON PLANT: A CONVENTIONAL PROCESS The process flow diagram of conventional coal based sponge iron plant is shown in figure 1. The operating data, shown in figure 1, is taken from a typical Indian coal based sponge iron plant where iron ore, feed coal and dolomite are fed to the rotary kiln.

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Direct Reduced Iron (DRI) | International Iron Metallics ...

In India there are many small rotary kiln furnaces producing DRI, known locally as sponge iron, using coal as energy and reductant source. Some of the sponge iron plants are captive to steel mills, but there is a significant domestic merchant market, India producing 57% of …

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WELSPUN STEEL LIMITED

Sizing of the Raw materials also play vital role in sponge iron manufacturing process. The required size of Iron ore, MPS (Mean particle size) , its physical properties like T.I., A.I. & chemical properties like Fe (T), LOI, gangue content In Sponge Iron Process , two types of coal are being used such as feed coal and injection coal.

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Sponge Iron Production By Direct Reduction Of Iron Oxide ...

This book provides a fascinating study of the very important emerging field of direct reduction in which iron ore is ‘directly reduced’ in the solid-state, using either natural gas or non-coking 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 ...

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Fundamental Studies Related to Gaseous Reduction of …

The product of the DR pr ocess is a highly porous solid iron (sponge iron or DRI). The metallization degrees of DRI vary between 90 and 95% and the products contain carbon with amounts between 0.5 and 4%, depending on the process. Due to large surface area, the sponge iron …

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SPONGE IRON PLANT

To control the sulphur in sponge iron, the sulphur in coal should be one percent maximum. 4) Good reactivity:- An important step in solid state reduction is the forward reaction, whereby carbon dioxide generated from burning of coal reacts with coal to regenerate carbon monoxide, the coal,

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SteelWorld.com - Monthly Journal

Development of coal based sponge iron processes with particular reference to India : A coal based sponge iron plant was first built in 1980 at a place called Paloncha in Andhra Pradesh which had a capacity of just 0.03 million tones per annum.

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What is Sponge Iron? (with pictures)

 · Sometimes known as direct-reduced iron, sponge iron is a product that is produced using iron ore.The iron ore is often in the form of pellets or lumps, and is subjected to a reduction process that is created by the use of a reducing gas that emits from coal or a natural gas source. This type of iron can be produced in several different types of furnaces, including coke or charcoal ovens, …

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DRI,THE SPONGE IRON INDUSTRY FULL VEDIO.. - YouTube

 · The feed rate of coal is a function feed rate of iron ore with fixed carbon/ iron ratio 0.45 to 0.50.The proportion of coal to be fed from the feed end and discharge end requires close attention ...

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Coal Base DRI Operation

 · Coal Base DRI Operation Sunday, 22 October 2017. ... The iron ore when is converted to sponge iron the appearance of iron is completely changed with more or less its coposition. Therefore it is important to know the conception of sponge iron before going details to the production.

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Coal block allocation: Sponge Iron, cement could benefit ...

Prospects for cement and sponge iron look bright whereas the same for power appear bleak. Coal block allocation: Sponge Iron, cement could benefit; worries for power IIFL Market Update

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Coal - Wikipedia

Coal seams can be set on fire by spontaneous combustion or contact with a mine fire or surface fire. Lightning strikes are an important source of ignition. The coal continues to burn slowly back into the seam until oxygen (air) can no longer reach the flame front. A grass fire in a coal area can set dozens of coal seams on fire.

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Sponge Iron Consumption against Metallic Steel Scrap In ...

Grain Size of Sponge Iron: Induction furnaces users always prefer to use fines of sponge iron (Coal Based sponge iron in sizes from 2mm to 5mm) than lumps as fines give better yield and hence less power consumption. So good sponge iron manufactures always try to use iron ore in the size of 5mm to 12 mm, which gives better quality sponge iron.

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Computational fluid dynamics analysis of sponge iron ...

It enters the kiln at atmospheric temperature and thus, considered as it is in the model. (3) Generally, the outlet stream of the kiln consists of 82%, 10%, 0.7% and 7.3% sponge iron, char, spent lime and ash, respectively. As the amount of sponge iron is significantly high in the outlet stream of the kiln it is considered as purely sponge iron.

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Report on the question of coking coal and coke for the ...

coking coal and coke for the iron and steel industry of the Community . ... try is a factor of decisive importance in estimating future coking coal(l) requirements ... It should be noted that for the present the sponge iron obtained by direct reduc­ ...

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Design Modifications for Energy Conservation of Sponge ...

Bandyopadhyay et al. 6 discussed that coal is the important raw material for sponge iron making and revealed that if very high volatile matter VM coals are used, most of the VM is lost at the

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Steelmaking raw materials: market and policy developments

Steelmaking raw materials: market and policy developments DSTI/SU/SC(2012)1 72nd Steel Committee Meeting Paris 31 May June 2012 Structure of the report A. Market issues 1. Importance of raw materials for steel 2. Production and resources of key raw materials 3. Trade in raw materials 4. Price and market developments 5.

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What is The importance of steel and iron industries in ...

The importance of steel and iron industries in India is very wide. They manufacture steel and iron which are commonly used in other activities especially construction.

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2 Overview of Technology and Mining | Evolutionary and ...

This chapter provides background information on the exploration, mining, and processing of mineral commodities. This is followed by a brief overview of the current state of technology in these fields. The role of research and development in improving technology, and thus in offsetting the adverse ...

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2 Overview of Technology and Mining | Evolutionary and ...

This chapter provides background information on the exploration, mining, and processing of mineral commodities. This is followed by a brief overview of the current state of technology in these fields. The role of research and development in improving technology, and thus in offsetting the adverse ...

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What is the importance of iron and steel industry?

To produce iron and steel you require lots of heavy iron ore and lots of coal. Transporting these long distances is possible via massive container ships or trains but it is qu … ite expensive and has only become an option relativly recently. Many steel and iron industries are located near to the coal and iron ore mines to reduce transport costs.

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Anthracite iron - Wikipedia

Anthracite iron or Anthracite 'Pig Iron' is the substance created by the smelting together of anthracite coal and iron ore, that is using Anthracite coal instead of charcoal to smelt iron ores — and was an important historic advance in the late s enabling great acceleration the industrial revolution in Europe and North America.

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What is the importance of iron and steel industry?

To produce iron and steel you require lots of heavy iron ore and lots of coal. Transporting these long distances is possible via massive container ships or trains but it is qu … ite expensive and has only become an option relativly recently. Many steel and iron industries are located near to the coal and iron ore mines to reduce transport costs.

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