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sl rn natural gas based rotary kiln

Direct Reduction Process - an overview | ScienceDirect Topics

However in the coal/oil-based DR process, the reducing gas is generated from hydrocarbons (primarily coal, but sometimes oil and natural gas) in the reduction zone of the furnace, which is typically a rotary kiln. Typical examples of the coal-based process include the SL/RN and ACCAR processes.

Prospects for Coal-based Direct Reduction Process

based DRI occupies 17.6 million tonnes, which equates to 25.7% of the total1). Most coal-based reduction processes including SL/RN2) employ rotary kilns. Pellets, or lump-ore, mixed with coal are/is charged into the rotary kilns2) and heated by coal burners to produce DRI. To avoid the significant formation of the kiln rings, their

Sponge Iron Sl Rn Rotary Kiln - pinotgris-test.de

Sl Rn Natural Gas Based Rotary Kiln. Mathematical model of the SLRN direct reduction rotary kiln as thereactorratherthan a vertical shaft The importance of this process restsin the fact that the coal which is preferably noncoking is used without treatment and is therefore less expensive than reducing gas which is obtained either by reforming ...

how does a coal based rotary kiln operates

tional SL/RN direct reduction plants based on a rotary kiln, with non-coking coal as the reductant and fuel • Design, engineering, delivery, and services for SL/ RN-Xtra plants, which use a combination of a pre-hardening grate and traditional SL/RN kiln for the treatment of iron ore fin • Hydrogen-based Circored fine ore reduction plants.

coal based rotary kiln sl rn process

SL/RN Process Industrial Efficiency Technology . The so-called Stelco-Lurgi/Republic Steel-National Lead (SL/RN) process is a widely used coal-based DRI-making process which uses a rotary kiln. The process uses lump ore, pellets, beach sand or …

SL/RN Process | Industrial Efficiency Technology & Measures

SL/RN Process. The so-called Stelco-Lurgi/Republic Steel-National Lead (SL/RN) process is a widely used coal-based DRI-making process which uses a rotary kiln. The process uses lump ore, pellets, beach sand or ilmenite ore and solid carbon to produce hot or cold DRI. The process operates at high temperature and atmospheric pressure.

Direct Reduced Iron and its Production Processes – IspatGuru

16-03-2013· 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.

SL/RN | Middle East Steel Industry

SL/RN Process. Energy consumption decreases because no coke oven and sinter plants are required. Total electricity consumption is 999.74 kWh/metric ton liquid steel. Total CO emissions are 3.2 t/t-liquid steel. Investment and operational costs of the process are reported to be $344.4 and $183.1 per ton of steel, based on a ...

Rotary Kiln Direct Reduction Processes Sl Rn Pdf

Erection The SL RN process also uses rotary kiln for reducing iron ore The plant as shown in Fig 2 essentially consists of raw material handling and preparation systems rotary kiln with heat ing arrangements for reduction of iron oxide kiln for cooling the reduced material and the facilities for separating sponge iron from char.

coal based rotary kiln sl rn process

SL/RN Process Industrial Efficiency Technology. The so-called Stelco-Lurgi/Republic Steel-National Lead (SL/RN) process is a widely used coal-based DRI-making process which uses a rotary kiln. The process uses lump ore, pellets, beach sand or …

(PDF) i) Direct Reduced Iron: Production

30-03-2016· Coal-based DR processes like SL/RN (1970), ACCAR (1973), KRUPP (1973), CODIR, and TDR (1975), using rotary kiln as a reactor and coal as a reductant, have been

sl rn natural gas based rotary kiln - patricot-paysages.fr

COMPARISON OF DIFFERENT COAL BASED DIRECT REDUCTION ... little access to cheap natural gas ... 2.1 Rotary kiln processes 2.1.1 SL/RN process Recovery and utilization of waste heat in a coal … Keywords: SL/RN, Rotary Kiln, Direct Reduced Iron, Nitrogen Control, Electric Steelmaking ...

coal based rotary kiln sl rn process - andika.ch

coal based rotary kiln sl rn process. Direct Reduced Iron Industrial Efficiency Technology . rotary kilns (SL/RN process) rotary hearth furnaces (Fastmet ® /Fastmelt ® and ITmk3 ®) fluidised bed reactors (Circored ®) (IPPC 2009) As there is no melting and no slag phase in DRI production all gangue elements of the iron ores remain in the DRI and need to be separated via a slag in the EAF.

Direct and smelting reduction - Outotec

Design, engineering, delivery, and services for traditional SL/RN direct reduction plants based on a rotary kiln, with non-coking coal as the reductant and fuel. Design, engineering, delivery, and services for SL/ RN-Xtra plants, which use a combination of a pre-hardening grate and traditional SL/RN kiln for the treatment of iron ore fines.

China Coal Based Rotary Kiln Sl Rn Process

Design, engineering, delivery, and services for traditional SL/RN direct reduction plants based on a rotary kiln, with non-coking coal as the reductant and fuel. Design, engineering, delivery, and services for SL/ RN-Xtra plants, which use a combination of a pre-hardening grate and traditional SL/RN kiln …

sl rn natural gas based rotary kiln - tohuidekoper.nl

Coal based Rotary Kiln process Solid Reduction, All the gas based plants in operation use natural gas as the reluctant and are all along the HBJ line The natural gas is under the GAIL control, which is a government organisation, and the steel sector is not the priority sector for the sanctioning of the gas, SL/RN Process, useful when.

Coal Based Rotary Kiln Sl Rn Process

Coal Based Rotary Kiln Sl Rn Process. ... DRI samples from a kiln cooler had high nitrogen contents 50-250ppm, depending on particle size, higher than DRI from gas-based reduction. The higher nitrogen content of SLRN DRI would increase the. Hyl Iii And Slrn The Two Widely Accepted Direct.

sl rn direct reduction process - BINQ Mining

04-12-2012· SL/RN technology is a coal-based rotary kiln reduction process, where we have played a leading role and built over the years 32 SL/RN kilns, mainly in India and South ... Pellets, or lump-ore, mixed with coal … natural gas based direct reduction process, but its

Rotary Kiln Manufacturers | 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 ...

sl rn natural gas based rotary kiln - robertfranklin.nl

coal based sponge iron making process ppt. Nov 18, 2012· The coal based rotary kiln process of making sponge iron is the focus of the present write, This process of directly reducing the iron ore in solid form, either natural gas or coal-based technology, Coal based processes: 1) …