sl rn lurgi dri process
The first DRI plant based on the SL/RN process was established in the 1960s by Lurgi Metallurgie, the predecessor of Outotec Oyj Since then there have been a number of commercial plants commissioned worldwide operating with the widest range of iron-bearing materials including pellets, lump ores, beach sand, and ilmenite ore
SL/RN and HYL are two such gas based direct reduction technologies (DR) or iron making process While HYL is a batchtype gas based process and uses a countercurrent shaftfurnace, 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 Process Industrial Efficiency Technology & Measur 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 Parent Process: Direct Reduced ,
Study on Accretion Formation on DRI kiln during spong iron production Chandrashekhar shrivas, Himanshu shrivas , coal based technologies SL/RN technology of Lurgi , West Germany has been the most successful one Little , The oxidation reaction of carbon during process is given as International Journal of Science, Engineering and .
The processes, which are currently in vogue, are SL/RN Process, Jindal Process, SIL Process, Krupp- Codir Process and TDR Process SIL Process is based on the Lurgi or the SL/RN Process 2141 SL/RN Process The raw materials (iron ore, coal and dolomite) are charged into the rotary kiln with the help of conveyor
Dec 23, 2013· 1 Seminar on HYL Process Presented by Ghanesh Kumar Mahanta Branch-Metallurgical and Materials Engineering Registration no-1001365015 2 The HYL process was developed by Hojalata y Lamina SA (HYLSA) of Monterrey, Mexico in the HYL process, lump ore and fired plates are produced in the fix bed retorts by performed natural gas
Iranian Financial Tribune reported that Kavir Damghan Steel Company is to employ the so-called Stelco-Lurgi/Republic Steel-National Lead (SL/RN) method to produce direct reduced iron Mr Mehdi .
2 The SL-RN Process In the course of extensive development work by both SL and RN groups, it appeared that the process variants in both the systems pre- oiCHAR ruFLE AIR !COAL 2000F FUEL REDUCTION KILN FLUX IRON OXIDE COO LER 200•F SEPARATION----wTAILINGS PRODUCT METALLIZED IRON Fig 2 The SL/RN Stelco Lurgi/Republic steel, National
Mathematical model of the SL/RN 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 ex-pensive than reducing gas which is obtained either by reforming natural gas or by gasifying coal
SL / RN PROCESS AND ITS APPLICATION TO INDIAN RAW MATERIALS DR KURT MEYER Lurgi Chemie and Huttentechnik , Frankfurt, West Germany Abstract 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
RDCIS 4 DRI Production Technologies • DR processes have overcome many of theirs conceptual & engineering problems, and hence have been commercialized throughout the world in a big way • Two major production technologies: – Coal Based Rotary Kiln process – ~20% of world DRI production – SL / RN Process, Jindal Process, TDR etc • Gas Based Shaft Reduction processes
Direct reduced iron - Wikipedia Direct reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore (in the form of lumps, pellets, or fines) to iron by a reducing gas or elemental carbon produced from natural gas or coal Many ores are suitable for direct reduction Read More-->coal based lurgi dri process .
Aug 21, 2016· New Method of DRI Production Kavir Damghan Steel Company is to employ the so-called Stelco-Lurgi/Republic Steel-National Lead (SL/RN) method to produce direct reduced iron
Nitrogen in SL/RN direct reduced iron: origin and effect on nitrogen control in EAF steelmaking M W Erwee Department of Materials Science and Metallurgical EngineeringUniversity of Pretoria, Pretoria 0002, South Africa Correspondence [email protected]
Dec 29, 2010 The worldwide production of direct reduced iron (DRI) has rapidly increased latter includes the SL/RN process, the FASTMET process, the Iron Making Indian Bureau of Min sponge iron also referred to as Direct reduced iron (DRI), based both on coal and The SL/RN process kilns are also equipped with nozzles for underbed
Mar 16, 2013· Fig 1 DRI process principle Major DRI production processes are either gas based or coal based Feed material in a DRI process is either iron ore sized to 10 to 30mm or iron ore pellets produced in an iron ore pellet plant In the gas based plant the reactor, the reduction reaction takes place is a ,
Aug 27, 2016· Ranjbari says the new production method will enable KADASCO to forego investment in expanding pellet production while adding 200,000 tons to the plant’s DRI output capacity SL/RN process is ,
The principal burden material used for production of DRI in the SL/RN process is iron oxide, either as sintered pellets or lump iron ore A wide range of fuels and reductants
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
The actual process of the coal based sponge iron production is based on SL/RN process (jointly developed by the Steel Company of Canada, Lurgi Chemie, Republic Steel Company and National Lead Corporation in 1964), which works on direct reduction of oreThis process is adopted by worldwide conventional sponge iron industri
Jul 29, 2010· Subsequently UNIDO came forward in bringing SL/RN technology of sponge iron making to our country with LURGI GERMANY in1979 A demonstration sponge iron plant of 30000tpa capacity was set up with liberal assistance from UNIDO, Govtof India and LURGI This humble beginning has grown tremendously to 22 million tons of installed capacity today
NITROGEN IN SL/RN DIRECT REDUCED IRON: ORIGIN AND EFFECT ON THE ELECTRIC STEELMAKING PROCESS By Markus Wouter Erwee Submitted in partial fulfilment of the requirements for the degree: MEng (Metallurgical Engineering) In the Department of Materials Science and Metallurgical Engineering.
•SL/RN (Stelco-Lurgi) Rotary Kiln With Only Recycle Scrap Charge to EAF 3-2: Process Descriptions and Flow Diagrams , The process can produce cold or hot DRI as well as HBI for subsequent use as a scrap substitute feed to a steelmaking melting furnace (SAF, EAF or
----- FIGURES Number Page 1 Growth in production of Direct Reduction sponge iron 2 2 Types of Direct Reduction processes 11 3 Feed material size distribution 14 4 Midrex standard flowsheet 17 5 The HyL process 21 6 The SL/RN process 29 TABLES Number Page 1 Regional Distribution of Direct Reduction Plants 3 2 Annual Capacity of Direct Reduction .
In the steel plant considered here, direct reduced iron (DRI), produced by the coal-based SL/RN process, makes up 50% or more of the total iron charge SL/RN DRI samples from a kiln cooler had high nitrogen contents (50-250ppm, depending on particle size), contributing to elevated nitrogen levels in liquid steel produced in the EAFs
The process feedstock is fed into the upper end of the cylinder As the kiln rotates, material gradually moves down toward the lower end, and may undergo a certain amount of stirring and mixing Hot gases pass along the kiln, sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter .
The process to be adopted is the rotary kiln process using low-grade coal to reduce , SL/RN Process : The SL/RN Process is the most widely used coal based , »More detailed 11 Current status of the iron and steelmaking industry Schematic illustration of the SL/RN process(1) Rotary kilns (such as the SL/ RN,
DRI Production Technologies • DR processes have overcome many of theirs conceptual & engineering problems, and hence have been commercialized throughout the world in a big way • Two major production technologies: – Coal Based Rotary Kiln process – ~20% of world DRI production – SL / RN Process, Jindal Process, TDR etc
SL/RN Process The so-called Stelco-Lurgi/Republic Steel-National Lead (SL/RN) % Read more Scrap processing Scrap consists of recyclable materials left over from Read more , DRI 3 DRI1 DRI 2 Power Plant3 Power Plant2 Power Plant1 Scrap processing3 Scrap processing2 Scrap processing1 Our Team Project Control Contracts
i) Direct Reduced Iron: Production , This product is known as direct reduced iron (DRI) or sponge iron , the SL/RN process is the most common The term SL/RN process stands for S telco, L .
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