importance of coal sizzing in sponge iron

Indian Sponge Iron Industry - Steelworld

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 …

Sponge Iron Industry on Oxygen - Steel360 News

The present project work on- Reduction Behaviour of Fired Iron Ore Pellets was undertaken with a vision to promote the effective utilization of iron ore and coal fines in sponge iron making Presently India has become the world leader in sponge iron production and the production of steel by DR-EAF route is increasing day by day

India - production volume of coal based sponge iron 2011

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-1830s enabling great acceleration the industrial revolution in Europe and North America

Energy survey of the coal based sponge iron industry

Importance of COAL Coal is the most abundant fossil fuel that mankind has been using for almost two millenniums It provides over 30 of global primary energy needs Over 40 of the world s electricity is generated using coal Over 70 of the world s steel is produced using coal Over four billion tonnes of cement is produced every year using about a billion tonnes of coal

Study on Accretion Formation on DRI kiln during spong iron

From Review of Sponge-Iron Processes This review of the development if the sponge-iron process to its present state gives only the important types of furnaces or processes tried Various muffle furnaces were first used to heat charges of coal and ore The important result obtained was the indication of the very In addition to tests

Use Of Fines For Sponge Iron Production In Coal Based

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

SPONGE IRON PLANT

Sample size As this was the first study of respiratory health status of coal-based sponge iron plant workers no information was available on which to base the sample size calcula-tion Instead a web-based sample size calculator Creative Research Systems 16 was used to calculate the sample size using the following assumptions informa-

REDUCTION BEHAVIOUR OF FIRED IRON ORE PELLETS

Nov 09 2014· Making process iron ore to sponge iron Sponge iron making process INJECTION COAL Coal Crushing Combustion Injection to kiln Coal Injection over a large range of size 0-20 mm Temperature combustion below 950 C Coal injection system makes use of voal volatiles for reduction thereby reducing the coal requirement to a minimum Coal

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

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

Industry Overview Sponge Iron Industry - Goodreturns

Nov 09 2014· Making process iron ore to sponge iron Sponge iron making process INJECTION COAL Coal Crushing Combustion Injection to kiln Coal Injection over a large range of size 0-20 mm Temperature combustion below 950 C Coal injection system makes use of voal volatiles for reduction thereby reducing the coal requirement to a minimum Coal

status of sponge iron plant Orissa

Sponge iron being magnetic gets attracted and gets separated from non- magnetic char The iron ore and coal crushed and screened to respective sizes are fed to rotary kiln through feed tube in pre-determined ratio The rotary kiln is slightly inclined at an angle 2 5 deg and rotated by

Direct reduction of iron DRI Sponge iron

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

south africa coal based sponge iron - Products -

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-1830s enabling great acceleration the industrial revolution in Europe and North America

Sponge iron making process - SlideShare

Sample Size Because this was the first study on the prevalence of res-piratory diseases among coal-based sponge iron plant workers no information was available on which to base the sample size calculation Instead a web-based sample size calculator Creative Research Systems 9 was used to calculate the sample size using the following assump-

DRI THE SPONGE IRON INDUSTRY FULL VEDIO - YouTube

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

Open Access Research Respiratory health status and its

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

sponge iron process 2010

3 Raw Material for sponge iron plant Coal Non-coking coal having certain important parameters is being used for the direct reduction of iron ore Important factors determining coal quality are • Chemical properties such as fixed carbon ash content volatile matter etc • Physical properties viz reactivity and ash fusion temperature In Orissa scenario all most all the sponge iron

Anthracite iron - Wikipedia

Jul 15 2015· Direct reduced iron final ppt Number of Coal Based Sponge Iron Plant State Number of Plant Small Scale Medium Scale Large Scale Odisha 108 26 64 18 Chhattisgarh 68 29 23 16 West Bengal 57 16 39 02 Karnataka 59 24 14 01 Jharkhand 37 13 23 01 Other States 21 05 12 04 Total 330 113 175 42 Scale Production MTPA Small ≤ 0 033 Medium 0 033

Coal based Direct Reduction Rotary Kiln Process IspatGuru

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

Prevalence and Predictors of Respiratory Diseases Among

Study on Accretion Formation on DRI kiln during spong iron production Chandrashekhar shrivas Himanshu shrivas Abstract---Today is an era of competition and contrary to this the Iron and steel industries are also suffering from the same One of the major challenges for sponge iron plant is the Accretion formation Through this

Direct reduced iron final ppt - SlideShare

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

Anthracite iron - Wikipedia

south africa coal based sponge iron 250tph river stone crushing line in Chile Output size 140-250mm Production capacity 2015-8895T H Gold Ore Beneficiation Plant Copper ore beneficiation plant Iron Ore Beneficiation Plant 20TPH vertical mill for limestone desulfurization in power plant 325mesh calcium carbonate production line

India - production volume of coal based sponge iron 2011

Sponge Iron Price Market Report Statistics Tenders Important Circulars Q How can sponge making be more energy efficient and environment friendly A As is known gas based sponge iron route is highly energy efficient and environment friendly However coal based sponge iron production route have some issues because of the deteriorating

Respiratory health status and its predictors a cross

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

WELSPUN STEEL LIMITED

We have use of fines for sponge iron production in coal based rotary kiln 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 …

Coke fuel - Wikipedia

A survey is made on a typical coal based Indian sponge iron plant of capacity 500 t d in order to identify the largest energy losses and find ways to increase the efficiency

Sponge iron making process - SlideShare

Quality of sponge iron for steel making • Size The size of sponge iron is very important especially with regard to continuous feeding A very fine sized material 1mm 2 mm would be quickly oxidized during falling to the slag or may be lost in fume extraction system Extremely large size exceeding 30 mm poses problem during

What is the process for producing sponge iron in coal

Jul 29 2010· The size distribution of sponge iron lumps varies with decrepitating behavior of iron ores As the Fe metallic content in sponge iron varies for each size fraction control of feed size of iron ore is very important for achieving uniform Fe metallic content The typical size distribution and Fe metallic for each fraction is as given below