SL RN process Outotec

As an answer to decreasing ore grades availability of lump ore and ever increasing amount of fine ores and concentrates Outotec has developed a variant of the process the SL RN Xtra direct reduction process which allows customers to produce direct reduced iron DRI for steelmaking directly from concentrates in a single plant combining

Seminar on HYL Process LinkedIn SlideShare

Dec 23 2013· Generally all process are used the coal for reduction of iron ore In substitution of coal we can use the natural gas and some fuel gas for reduction of iron ore and production of DRI commercially in HYL 4 DRI is the Direct reduction of Iron Ore by some reductant The Reductant may be the Solid or Gas

Answered What is the percentage of Fe in an iron bartleby

Solution for What is the percentage of Fe in an iron ore of 0 5 g of the ore after solution in acid and complete reduction of the iron requires 25 50 ml

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

process making sponge iron rotary kiln animation

sponge iron rotary kiln animation in guinea bissau 2020 5 9 · Cement Rotary Kiln Animation In Oman Home Cement Rotary Kiln Animation In Oman Tunnel sponge iron kiln kiln process sponge iron in south africa2016214 dri iron furnace china machinery 14 2016 iron was made by smelting iron ore or heating the ore up to melting s kinds of is the manufacturing process of iron ore gold and

Fourth Iron Range taconite operation announces layoffs

DULUTH Minn The U S Steel mine in Mountain Iron will lay off 260 workers on May 10 the latest iron ore mine and pellet processing plant to succumb to layoffs on the Iron Range In an o

Recovery and utilization of waste heat in a coal based

structure due to which it is named as sponge iron As the iron ore is in direct contact with the reducing agent through out the reduction process it is often termed as direct reduced iron DRI It is seen that the growth of sponge iron industry in last few years is unremarkable and today India is the largest producer of sponge

Characterisation of the Physical and Metallurgical

In the DR process Route 2 only natural ores with high physical and metallurgical properties are applied Among the numerous processes for direct reduction of iron ore the Midrex and HYL III by means of gas and the SL RN rotary Kiln by means of coal reduction have had the most successful industrial implementation 13 18 19

iron ore smelting process plant pneumatic conveying

Iron Ore Smelting Process Bright Hub Engineering Iron Ore Smelting Process Using Modern Blast Furnaces Although the basic ingredients of an iron ore blast furnace has changed little over the last hundred years or so the furnaces themselves have been modernized to improve efficiency and the purity of the iron and steel


Coal based DRI plants employing technologies like SL RN process jointly developed by steel company of Canada Lugri Chemie Republic steel company and National Lead corporation in 1964 Allis Chalmers Atmospheric Reduction ACCAR TISCO Direct Reduction TDR process etc generates approximately 20 30 iron and coal fines as rejects

Five ways hospitals can reduce their environmental footprint

May 23 2018· Iron ore from Western Australia is shipped to China and smelted fashioned into stainless steel surgical instruments in Pakistan and exported as single use instruments In Australia clinicians

CO2 Scrubbing pilot plant ProcessNet

Outotec s direct reduction processes 5 Iron ore Process Reductant Product Direct reduced iron DRI Lumps Fines Coal SL RN Circofer Circored Gas Pretreatment ICEPE June 22 2011 – CO 2 absorption pilot plant

Emerging Technologies for Iron and Steelmaking

Several processes based upon the direct reaction of coal and iron ore in a rotary kiln such as the SL RN process have reached various stages of development since the 1960s 20 Due to the high gangue and low specific productivity of these processes they have not received a great deal of attention for commercial production Several processes

Direct and Smelting Reduction Outotec

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 Hydrogen based Circored fine ore reduction plants with both circulating CFB and bubbling BFB fluidized bed reactors

Mathematical model of the SL RN direct reduction process

A mathematical model has been developed to predict the operating behavior of an SL RN direct reduction kiln from a knowledge of the main process variables The model is based on steady state principles and is capable of quantitatively describing the different chemical reactions in the kiln such as reduction Boudouard reaction coal devolatilization combustion in the freeboard together with

Rotary kiln Wikipedia

Size of ore feed mm 20 20 10 5 25 5 0 2 Influence of basicity of charge CaO Al 2 O 3 no influence 0 3 2 8 3 0 Maximal temperature of charge °C 600 900 900 1100 1200 1300 1400 1500 Oxygen removal O 2 extracted from Fe 2 O 3 12 20 70 90 100 Examples of processes Lurgi Highveld Udy LARCO Elkem RN SL RN Krupp Krupp Renn Basset

Session II Utilizing DRI Ian Cameron Hatch Ltd

Pellets or lump iron ore is charged at the top of the shaft furnace The iron ore is reduced by counter flowing gases high in H 2 and CO These gases convert iron ore to Fe leaving H 2 O and CO 2 as exit gases Process employs a stoichiometric reformer ProcessUnit Data Unit Capacity Mtpa 1 0 –2 0

Possibility of hydrogen reduction in iron making process

The symposium covers recent developments in metallurgical science and technology The volume is on iron and steel It includes the following five subjects assessment of burden iron ore reduction

AIST Digital Library

1977 ironmaking proceedings combinative effect of gangue and alkalies on the behavior of iron ore pellets during reduction construction and operation of a coke side shed at dofasco cooling on the sinter strand sl rn sponge iron plant at hecla mining company lakeshore mine


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SL RN technology of Lurgi West Germany has been the most successful one Little success has been achieved by other gas reduction of iron ore by reducing reformed gases and cooling of the product The gas refOrming comprises preheating and desulphurisation of

SL RN Iron Making Rotary Kiln Process for DRI

Nov 01 2015· SL RN Iron Making Rotary Kiln Process for DRI Production Iron Ore Pelletizing 4 45 John Schulte 20 391 views 4 45 The HBI direct reduction process voestalpine in Texas Duration

Investigation on beneficiation of goethite rich iron ores

2019 Investigation on beneficiation of goethite rich iron ores using reduction roasting followed by magnetic separation Mineral Processing and Extractive Metallurgy Vol 128 No 3 pp 175 182

Microwaves Applied to Carbothermic Reduction of Iron Ore

Results of reduction tests conducted on iron ore pellets with carbon are presented in this work Work done is centered on reduction kinetics using carbon as the reducing agent with a conventional heat supply heat transfer process compared with reduction kinetics where heat is supplied by microwaves to the whole volume Ore used in this work is called Alzada which has well known

Industry Guru Techno Commercial and Market informations

HYL III and SL RN The two widely accepted gas based Direct Reduction DR processes of iron making A Techno Commercial Comparison between Andalusite and Bauxite in their applications as Refractory Raw Material Continuous Casting Tundish Lining

Direct Reduced Iron an overview ScienceDirect Topics

In the CFB reactor preheated iron ore is pre reduced to a degree of metallisation of up to 85 with CO and H 2 out of in situ coal gasification The reactor off gas is used in one or two preheating stages depending on desired off gas temperature to preheat the cold iron ore making use of

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

DRI production International Iron Metallics Association

Direct reduction of iron is the removal of oxygen from iron ore or other iron bearing materials in the solid state i e without melting as in the blast furnace The reducing agents are carbon monoxide and hydrogen coming from reformed natural gas syngas or coal Iron ore

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