coal based sponge iron process

(PDF) Environmental performance evaluation of sponge iron industries in ...

(PDF) Environmental performance evaluation of sponge iron industries in ...

Broadly two types of technologies are used for producing sponge iron, for coal based plants, coa l . ... Figure III: Process Flow Diagram of Coal Based Sponge Iron Plant alon g with Sources of .

Direct Reduction of Ferrous Oxides to form an IronRich Alternative ...

Direct Reduction of Ferrous Oxides to form an IronRich Alternative ...

Sponge iron is produced primarily both by using noncoking coal and natural gas as reductant and therefore classified as coalbased and gasbased process, respectively. High purity sponge iron powder is currently manufactured from high purity iron ore following the basic steps of magnetic separation and milling, primary reduction process ...

Direct Reduction Process an overview | ScienceDirect Topics

Direct Reduction Process an overview | ScienceDirect Topics

This is a coalbased reduction technology, applicable to both steel mill waste and iron ore fines, with coal as a Creductant agent. The reduced iron can be fed to a BF or directly into a melting process. If exposed to air for a long time, the metallic iron reoxidizes into iron oxide, deteriorating its quality.

Coal processing | Britannica

Coal processing | Britannica

In chemical industry: Benzene. .from the carbonization (heating) of coal, which produces coke, combustible gas, and a number of byproducts, including benzene. Carbonization of coal to produce illuminating gas dates back in England to the very early years of the 19th century. The process is still employed in some countries, but more use is..

Recovery and utilization of waste heat in a coal based sponge iron process

Recovery and utilization of waste heat in a coal based sponge iron process

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Axial injection of air into the rotary kiln. ResearchGate

Axial injection of air into the rotary kiln. ResearchGate

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.

PDF Good Practices Manual NPC

PDF Good Practices Manual NPC

Brief description of sponge iron plant process 40 Technological options for coal based plants 42 Status of Sponge Iron Plants in India 67 Questionnaire Survey 67 Identified stakeholders for consultations 67 Questionnaire Survey Analysis 68 General outlook of green house emission measures and practice ...

PDF Recovery and Utilization of Waste Heat in a Coal Based Sponge

PDF Recovery and Utilization of Waste Heat in a Coal Based Sponge

Coalbased sponge iron process The process of the direct reduction of haematite in a rotary kiln is schematically described in the Fig. 1. Haematite and noncoking coal are fed to the kiln at controlled rates without premixing and the charge moves through the kiln depending upon the rotation

Sponge Iron | SpringerLink

Sponge Iron | SpringerLink

Sponge iron means porous iron produced by direct reduction reduction (DR) process is a solidstate reaction process ( solidsolid or solidgas reaction) by which removable oxygen is removed from the iron ore, using coal or reformed natural gas as reductants, below the melting and fusion point of the lump ore or agglomerates of fine ore [].

Recovery and utilization of waste heat in a coal based sponge iron process

Recovery and utilization of waste heat in a coal based sponge iron process

Recovery and utilization of waste heat in a coal based sponge iron process (PDF) Recovery and utilization of waste heat in a coal based sponge iron process | Vivek kumar bir98bir no longer supports Internet Explorer.

PDF Energyefficient Technology Options for Direct Reduction of Iron Process

PDF Energyefficient Technology Options for Direct Reduction of Iron Process

sponge iron sector, which is dominated by smallsized coalbased direct reduction of iron (DRI)based plants. India is one of the unique countries in the world where coalbased DRI route contributes to nearly 20% of the total steel capacity in the country. The prominence of DRI route in the country is

Shabina Khanam IIT Roorkee

Shabina Khanam IIT Roorkee

Apart from these research publications, an article entitled "PROCESS INTEGRATION OF COAL BASED SPONGE IRON PLANT" has been published in DRI UPDATE Magazine, November 2020, Sponge Iron Manufacturing Association (SIMA), New Delhi. It is circulated to all sponge iron fraternity of the world through SIMA.

Development of energy conservations scenarios for sponge iron industry ...

Development of energy conservations scenarios for sponge iron industry ...

Coal based sponge iron plant: a conventional process. The process flow diagram of conventional coalbased sponge iron plant is shown in Fig. 1. The operating data shown in Fig. 1 is taken from a typical Indian sponge iron plant. In the conventional process kiln feed, which consists of iron ore, feed coal, and dolomite, is fed to the rotary kiln.

PDF Generation of Energy Conservation Measures for Sponge Iron Plants

PDF Generation of Energy Conservation Measures for Sponge Iron Plants

The process flow diagram of conventional coal based sponge iron plant is shown in Fig. 1. The operating data, shown in Fig. 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. A separate conveyor collects different size fractions of coal for injection into the kiln

Sustainability Enhancement of the Coal Based Direct Reduction of Iron ...

Sustainability Enhancement of the Coal Based Direct Reduction of Iron ...

After the reduction process, a mixture of sponge iron and char is discharged from the kiln into the cooler where cooling takes. Water is sprayed at the cooler shell to indirectly cool the material from about 1000 ℃ to 120 ℃. ... Kaltenthaler, E.: Healthrelated qualityoflife of coalbased sponge iron plant workers in Barjora, India: a ...

A review of ironmaking by direct reduction processes: Quality ...

A review of ironmaking by direct reduction processes: Quality ...

However, for coalbased DR the reductant is generated from noncoking coal and rotary kilns, rotary hearth furnaces and multihearth furnaces are used (Ghosh and Chatterjee, 2017). It has been estimated that approximately 6575% of sponge iron production cost is attributed to the cost of raw materials (Indian Bureau of Mines, 2011).

(PDF) Operation of CoalBased Sponge Iron Rotary Kiln to Reduce ...

(PDF) Operation of CoalBased Sponge Iron Rotary Kiln to Reduce ...

Sponge iron is a type of iron produced by coal based or gasbased reduction of iron ore. It is difficult to measure and control the degree of reduction or quality of the iron ore at intermediate ...

Lowcarbon production of iron and steel: Technology options, economic ...

Lowcarbon production of iron and steel: Technology options, economic ...

Reducing gases are produced from natural gas (gasbased DRI) or coal (coalbased DRI) called syngas, a mixture of H 2 and CO. Although DRI production is more energy efficient than pig iron production from BF, additional processing (typically EAF) is needed to upgrade DRI sponge iron for market.

PDF SPONGE IRON INDUSTRY Centre for Science and Environment

PDF SPONGE IRON INDUSTRY Centre for Science and Environment

India is the world's largest producer of sponge iron, accounting for 13 per cent of the global production 8. Sponge iron is produced using either coal or natural gas. Since coal is available in India, the sector largely depends on coal based sponge iron which contributes about 80 per cent of the total capacity in the country9.

PDF Chapter 1 Review of Sponge Iron Making Process Historical Development

PDF Chapter 1 Review of Sponge Iron Making Process Historical Development

Sponge Iron Making Process(Coal Based) KruppRenn Process : The KruppRenn process was developed in 1930. In this process high silica ore and lime stone is treated. In this process a mixture of ore and reducing agent like coke breeze or bituminous coal fines are fed into rotary kiln continuously. ...

Process flow diagram of the sponge iron plant. ResearchGate

Process flow diagram of the sponge iron plant. ResearchGate

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.

PDF Executive Summary Dsir

PDF Executive Summary Dsir

process of HYLSA. These contribute over 80% of world sponge iron production today. Out of the coal based technologies SL/RN technology of Lurgi GmbH, West Germany has been the most successful one. Little success has been achieved by other coal based technologies namely CODIR technology of Krupp Industriatechnik now Mannesmann Demag,, DRC

A review of ironmaking by direct reduction processes: Quality ...

A review of ironmaking by direct reduction processes: Quality ...

2. Overview of DR processes. Direct reduction processes reduce iron ore (in the form of lumps, pellets or fines) to the solid state using a reducing. gas to produce Direct Reduced Iron (also known ...

Analyses of Different Modifications Proposed for the Sponge Iron ...

Analyses of Different Modifications Proposed for the Sponge Iron ...

Sponge iron, also known as direct reduced iron (DRI) and used widely in the steel making process, resembles a honeycomb in its structure. As India has adequate coal deposits and its utilization for steel plants is considered to be of prime importance, production of coalbased sponge iron is considered as a viable option (Agrawal et al. 2000).In DRI production, India deserves special attention ...

Recovery and utilization of waste heat in a coal based sponge iron process

Recovery and utilization of waste heat in a coal based sponge iron process

Recovery and utilization of waste heat in a coal based sponge iron process. by Vivek Kumar. 2012, Chemical Engineering and Processing: Process Intensification. See Full PDF Download PDF. Create a free account. Access 47 million research papers for free; Keep uptodate with the latest research;

Steelmaking in Induction Furnace IspatGuru

Steelmaking in Induction Furnace IspatGuru

Making of mild steel in the induction furnace was first experimented during early 1980s and it gained popularity when the production of sponge iron utilizing coal based process of rotary kilns became popular. Induction furnace is a type of electric melting furnace which uses electric current to melt metal.

Comparative life cycle assessment of natural gas and coalbased ...

Comparative life cycle assessment of natural gas and coalbased ...

On sponge ironmaking in coalbased rotary kilns, there are studies on process modeling (Gaurav and Khanam, 2016), ... Switching from coal to NG as the feedstock leads to a 58% reduction in the GHG emissions of the coalbased DRI process plants (including electricity use). On a life cycle basis, GHG emissions from the NG reformer DRI process ...

Evaluation of new equipments for utilization of waste heat in sponge ...

Evaluation of new equipments for utilization of waste heat in sponge ...

The present work investigates the design modifications which can lead to efficient energy integration in coalbased sponge iron plant with a capacity of 500 t/day. For the present energy integration investigations, two scenarios: 1 and 2 are proposed and compared with the existing one. During the operation in coalbased sponge iron plant, a tremendous amount of heat is generated and a ...

PDF ―Reoxidation of Sponge Iron Is an Exothermic Process Due to Removal of ...

PDF ―Reoxidation of Sponge Iron Is an Exothermic Process Due to Removal of ...

Fig 3 Process flow diagram for coal based sponge iron The hot reduced sponge iron along with semiburnt coal, discharged from kiln is cooled in watercooled cylindrical rotary cooler to a temperature of 100200°C. The discharge from cooler consisting of sponge iron, char other contaminations are passed on through

SPONGEIRON Shakambhari Group

SPONGEIRON Shakambhari Group

SIPL is operating 4 x 100 TPD Direct Reduced Iron Rotary Kilns for production of 2000 TPA Sponge Iron at Purulia, using the proven German SL/RN technology. Sponge Iron, also known as Direct Reduced Iron is produced from Hematite Iron ore (5 to 18 mm size) by removing the oxygen by direct reduction process using non coking coal as the fuel and ...

(PDF) Energy survey of the coal based sponge iron industry ResearchGate

(PDF) Energy survey of the coal based sponge iron industry ResearchGate

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. The required data are ...

PDF Energy Survey of the Coal Based Sponge Iron Industry

PDF 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 ... In conventional coal based sponge iron plant, Fig. 1, kiln feed (Stream no ...

CDM: CDMHome

CDM: CDMHome

Increasing pellatisation capacity of the country based on large iron ore deposits with high proportion of fines,'blue dust. Long term policy in respect of allotment and pricing of natural gas and coal to sponge iron industry. Coal authorities should pay special attention for production Of superior grade noncoking coal to cater to the needs of ...

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