sl rn process to produce sponge iron

iron production by direct reduction slrn pdf

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).

ENVIRONMENTAL - ASPECTS OF THE DIRECT REDUCTION …

Potential Pollution Problems Met With in Sponge Iron Production ... Various Routes to Produce Steel from Iron Ore . 2 Review of the Construction Costs of Selected Iron and Steel Works ; 3 ... The SL/RN Process at New Zealand Steel . 15 Alternate Flowsheets for the CODIR Process ; 16

Direct Reduced Iron and its Production Processes – IspatGuru

Mar 16, 2013· Fig 2 Principle of direct reduction process. Gas based process. In the gas based reduction processes, a vertical shaft kiln is used in which iron ore is fed into the top of the kiln and finished sponge iron is drawn off from the bottom after cooling it so as to prevent its re-oxidation.

Sponge Iron – Prakash Industries Limited

Solid reduction process. Sponge iron is a highly processed form of iron ore which contains metallic iron in the range of 83-88% obtained by direct reduction without melting it. Due to high porosity, the resulting iron is called sponge iron. It is used as a raw material for manufacturing steel through electrical arc furnace and the induction ...

Visa Steel Ltd, Jajpur - Manufacturer of Ferro Chrome and ...

Sponge Iron. VISA Steel is operating 2 x 500 TPD Direct Reduced Iron Rotary Kilns for production of 300,000 TPA Sponge Iron at Kalinganagar Industrial Complex, Odisha, using the proven German SL/RN technology provided by Outotec Oyj (formerly Lurgi Metallurgie ). Sponge Iron, also known as Direct Reduced Iron is produced from Hematite Iron ...

SPONGE-IRON - 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 ...

Sponge Iron, स्पंज आयरन in Bhubaneswar, Welspun Steel ...

The process of sponge iron making aims to remove the oxygen from iron ore. The quality of sponge iron is primarily ascertained by the percentage of metallization (removal of oxygen), which is the ratio of metallic iron to the total iron present in the product. Sponge iron manufacture is highly sensitive to raw material characteristics.

RECYCLING IN THE STEEL INDUSTRY

Process to Produce Agglomerates for BOF and Open Hearth Use T. H. Weidner, ]. W. Kreiger 72 Supplementary Hot Metal from Waste Oxides F. T. Kaiser, L L. French 77 New Treatment Possibilities of BF/BOF Zinc (and Lead) Bearing Dusts R. Pazdej, J. M. Steiler 85 Production of Sponge Iron from Rolling Mill Scale According to the SL/RN Process

STUDY ON REDUCTION OF IRON ORE CONCENTRATE IN …

Later the pig iron is processed to produce steel through oxidation blowing in a converter. Typical chemical compositions of ... rotary kiln named as SL/RN and is applied at PT. Meratus Jaya, South Kalimantan. The ... sponge iron manufacturing process. Man et al. (2014), ...

Bihar Sponge Iron Limited (BSIL) | Umesh Kumar Modi Group

The Project based on SL/RN 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.

SL/RN process - Outotec

In the standard SL/RN process, iron ore, coal, and dolomite or limestone as desulfurizing agent are charged into a rotary kiln and heated up by a countercurrent gas flow. Heat is generated by the controlled combustion of volatiles from the coal and …

Ironmaking Process - Department of Energy

between SL/RN (3%), Finmet (2%) and Other (predominately Corex at 5%). It is significant that the Shaft Furnace processes produce nearly 90% of the total Alternative Iron Units. Although there are a number of Alternative Ironmaking Processes in the startup phase …

Direct Reduction | Middle East Steel Industry

Dec 10, 2012· Iron Carbide Process: Energy input to the process is reported to be 12.6 GJ/t-product (IPPC, 2009. p.500). Total CO 2 emissions from the process are reported to be 2.17 t CO 2 /t-steel. Capital expenses for the process are estimated to be $347.6/t-steel. Production costs are estimated to be lower than other DRI processe. Commercial: Circored

Rotary Kiln with SL/RN Process - Electrotherm E&T

Rotary Kiln with SL/RN Process. Coal Based Rotary Kiln for Direct Reduced Iron / Sponge Iron (100 TPD, 350 TPD, and 500 TPD) Solid-state reduction of Iron Ore using either coal/gas as a medium of reduction to produce a substitute raw material for steel making is termed as Direct Reduced Iron (DRI). Since DRI is produced by removing oxygen from ...

Analyses of Different Modifications Proposed for the ...

Jul 02, 2018· 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 coal-based sponge iron is considered as a viable option (Agrawal et al. 2000).In DRI production, India deserves special attention ...

Sponge Iron Production Process - Arij Trading - Iron&Steel

Sponge iron production process discussed herein are selected from known methods of which the references are available and referable. We look at the 4 different methods of …

Sponge Iron Division – Trimula Industries

Sponge Iron Division – Trimula Industries. This plant is based on SL/RN process. Rated capacity of this plant 0.21mtpa. In addition to producing DRI, the system is equipped with waste heat recovery boiler from where we can generate 16 MW/hr power from waste gas.

THE EFFECT OF REDUCTION TIME AND SIZE DISTRIBUTION OF ...

used to reduce low-grade iron ore and produce sponge iron with a high metallization. This ... (SL/RN) to process local iron ore. Local iron ore in South Lampung Regency is primary iron ore in the form of laterite. Primary iron ore contains pure hematite and hematite-containing impurity silica levels ranging from 40-65% Fe total. The total

Sponge iron Manufacturing process - Simurgh Industrial and ...

Sponge iron is a metal product that is produced by a direct reduction of iron ore in solid-state. Sponge iron is a good alternative to waste and is mainly used in the manufacture of steel via secondary routes. The process of making sponge iron occurs by removing oxygen from the iron ore.

Nitrogen in SL/RN Direct Reduced Iron: Origin and Effect ...

Since the SL/RN process is a solid-state reduction process, with solid carbon as reductant, little carbon dissolves in the sponge iron. The carbon content of DRI produced at the plant considered in this work is less than 0.15% C7, considerably lower than that of DRI produced

BSIL

The plant is based on Lurgi's SL/RN (coal based) process and is designed to produce 150, 000 tonnes of sponge iron per annum. The implementation of this massive project started in June 1986 and was completed in record time. The project cost was $ 90 M at that time and was partly funded by IFC Washington. The plant started commercial ...

Iron pellets export types in bulk - Simurgh Industrial and ...

Typical examples of the coal-based process include the SL / RN and ACCAR processes. Coal-based DR process is more popular in India and China. Different types of reactors such as shaft furnaces, fluidized beds, rotary furnaces and rotary hearth furnaces have been used in different variations of the process to achieve the required metallization.

producing iron with slrn process

Sep 21, 2019 · SL/RN and HYL are two such gas based direct reduction technologies (DR) or iron making processes. While HYL is a batch-type gas based process and uses a countercurrent shaft-furnace, the SL/RN process (Stelco–Lurgi/Republic Steel–National Lead) utilizes rotary kiln to reduce lump ore, pellets and sand iron with coal.

SL - RN (Iron Making Rotary Kiln Process for DRI ...

Nov 01, 2015· (SL/RN) Stelco-Lurgi/Republic-National rotary kiln process

(PDF) COMPARISON OF DIFFERENT COAL BASED DIRECT REDUCTION ...

Of the various direct reduction processes converting iron ores to sponge iron, the Midrex and HYL processes are generally used for gas based reduction and SL/RN process is the most common coal ...

Some Studies on Energy Savings in Sponge Iron Plants | J ...

Aug 29, 2003· This paper presents the potential for energy savings in various capacity sponge iron plants by estimating heat transfer rates using stabilized and optimized temperature data within the rotary kiln/reactor. ... Process Characteristics and Industrial Application of Rotary Kiln Iron Ore Reduction ... "The Present State of SL/RN Coal Based Direct ...

Process for regenerating a reducing gas mixture from spent ...

A process for regenerating a reducing gas mixture from direct reduction furnaces for the production of sponge iron characterized by the steps of providing an arc heater having spaced electrodes and an arc chamber communicating with a gas reformation chamber, striking an electric arc between the electrodes, introducing an arc gas comprising a gaseous mixture of CO, CO2, H2, and H2O to provide ...

Extracting More Sponge Iron Is Imperative To Boost Steel ...

Sep 29, 2019· (Sponge Iron Plants) Typical examples of coal-based process include SL/RN and ACCAR processes. 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 …

Proceedings. (Workshop on technology for sponge iron ...

based on sponge iron production and its waiting in electric arc furnaces to produce ri— rrlal grades of steel. Nays- and means of increasing regional steel production by means of application of modern steelnaking technology, and, in particular, the direct reduction process, remain yet to be explored.

Iron Sponge Process - an overview | ScienceDirect Topics

James G. Speight Ph.D., D.Sc., in Natural Gas (Second Edition), 2019 8.5.1 Iron sponge process. An example of a hydrogen sulfide scavenger process is the iron sponge process (also called the dry box process), which is the oldest and still the most widely used batch process for sweetening of natural gas and natural gas liquids (Anerousis and Whitman, 1984).

PRESENT STATE OF THE SL / RN PROCESS AND ITS …

The paper describes the present state of development of the SL/RN Process, discussing the reasons for using solid fuels as reductants and the application of a rotary kiln as reactor. Especially ... It is important therefore to produce sponge iron at as low cost as possible. 'Experience has shown so far that about 60% of the production

Emerging Technologies for Iron and Steelmaking

A process which could produce steel or low carbon iron directly and continuously would be a revolutionary development in ferrous process metallurgy. The AISI direct steelmaking project evaluated a continuous refining process for the conversion of hot metal as from a bath smelter to steel. 10 The project studied a single zone and two zone reactors.

Direct Reduction of Iron Ore | SpringerLink

Nov 27, 2014· In the search for a pure, available iron source, steelmakers are focusing their attention on Directly Reduced Iron (DRI). This material is produced by the reaction of a low gangue iron ore with a hydrocarbonaceous substance. Commercially, DRI is generated in four different reactors: shaft (moving-bed), rotary kiln, fluidized bed, and retort (fixed-bed). Annual worldwide production capacity ...

Prakash At A Glance – Prakash Industries Limited

This specially designed plant makes use of sponge iron kilns running on SL/RN technology from Lurgi, Germany, the only renowned technology in coal-based Sponge Iron manufacturing across the world. The Sponge Iron manufactured in the Kilns is used inhouse in the Steel Melting Shop of the company, and then results in the production of high ...

Bihar Sponge Iron direct reduced iron DRI Jharkhand India

BSIL manufacturing technology is based on Lurgi's coal-based SL/RN process (part-financed by a loan from the International Finance Corporation, IFC). The DRI plant is designed to produce 150000 tonnes of sponge iron per annum. Currently, the firm has ~500 employees. BSIL also own a captive 5 MW power plant. Recent News. 2014: Chandil Power ...

sl rn process to produce sponge iron

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