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Sponge Iron Industry - SlideShare

17 Nov 2012 ... Pollution in the Coal Based Sponge Iron Industry in India.

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Study on Accretion Formation on DRI kiln during spong iron… pdf

USA and HYL-III process of HYLSA. These contribute over 80% of world sponge iron production today. Out of the coal based technologies SL/RN technology of Lurgi ,. West Germany has been the most successful one. Little success has been achieved by other coal based technologies namely CODIR technology of...

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Seminar on HYL Process - SlideShare

23 Dec 2013 ... Reductant Natural Gas,Gassified Coal DRI/HBI/HDRI Gas Based Process Technology Shaft Furnace (Moving Bed) 1. Midrex 2. HYL-III 3. NSC 4. Iron carbide 5. Ghaem 6. Circored Reductant Non-Coking Coal DRI Technology Kiln Process 1. Krupp Rein 2. Krupp CODIR 3. SL/RN (Outocompu) 4. ACCAR 5.

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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 ilmenite ore and solid carbon to produce hot or cold DRI. The process operates at high temperature and atmospheric...

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Sponge Iron Industry - Central Pollution Control… pdf

20 Mar 2007 ... 2.2 : Source of Iron Ore, Coal and Natural Gas in India. 18. 3. 2.3 : Location of Sponge Iron Industries in India. 19. 4. 3.1 : Krupp-RENN Process Flow Diagram. 26. 5. 3.2 : Krupp-CODIR Process Flow Diagram. 27. 6. 3.3 : SL/RN Process Flow Diagram. 30. 7. 3.4 : ACCAR Process Flow Diagram. 32. 8.

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SLRN PROCESS OF SPONGE IRON MAKING -…

16 Oct 2016 ... More Details : producing iron with slrn process - Carry crusher producing iron with slrn process. China Group For...

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Technology and Steel Industry Competitiveness - Princeton… pdf

improved methods of increasing scrap and sponge iron use; increased availability of direct reduced iron (DRI) as a substitute for scrap; increased availability of suitable iron oxide/carbon composites (pellets, bri- quettes) as "self-reducing" materials; continuing development of systems for solid-state processing (the direct...

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mathematical model of the sl/rn direct reduction… pdf

ton per day pilot kiln at the Steel Company of Canada. The influence of important process variables such as the type of coal, ore, degree of reduction, throughput etc. has been examined and p r e d i c t i o n s made r e g a r d i n g t h e o p e r a t i o n o f l a r g e commercial. SL/RN kilns for sponge iron production.

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Annex 7 - Extracts DSIR Report - unfccc cdm pdf

Hojalata Y Lamina of S.A. (HYLSA), gas based moving bed technologies of Midrex Corporation of USA and HYL-III process of HYLSA. These contribute over 80% of world sponge iron production today. Out of the coal based technologies. SL/RN technology of Lurgi , West Germany has been the most successful one.

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Characterisation of the Physical and Metallurgical Properties -…

10 Jun 2012 ... Of these, 70% was produced via the basic oxygen furnace (BOF), which uses pig iron from the blast furnace, and 28% via the electric arc furnace (EAF), which uses sponge iron and scrap [1]. Iron ore can be used directly in its natural form as a raw material for processing iron or it can be upgraded through...

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PROPERTIES AND FEATURES OF DIRECT REDUCED IRON…

31 Jan 2007 ... Thus, due to this porous structure, DRI is often called sponge iron. It should be noted that although the current blast furnace processes is fully established, many of the alternative ironmaking processes are still under development. However, direct reduction processes have reached some level of commercial...

Iron and Steel 2020.pdf - Indian Bureau of Mines pdf

ironmaking processes. Over the past two decades, alternative technology to produce solidironin the form of sponge iron also referred to as Direct reduced iron (DRI), based both on coal and gas as well as to produce hot metal (liquid) without using high-grade coke via reduction smelting. IRON & STEEL - VISION 2020...

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Energy Conservation in Sponge Iron Production… pdf

Abstract— A waste heat recovery system was designed to integrate the heat of stack gas in the sponge iron process by considering a case study of typical Indian sponge iron process. After complex reduction and combustion the process stack gas exits the sponge iron plant at substantially higher temperature ranges...

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Accretion Control in Sponge Iron Production Kiln using… pdf

Keywords: Accretion, Fuzzy Logic, Kiln, Sponge iron. 1. Introduction. Rapid growth in technology has resulted in increased demand for high quality products. This has called for high performance control systems for industrial applications to produce high-tech products. The complexity of a processing plant determines the...

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Direct reduction : a review of commercial processes - epa…

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...

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Patent WO2014111901A2 - An efficient process in the…

24 Jul 2014 ... In case of pig iron production, iron ore pellets are subjected to reduction, by use of metallurgical coke and preheated hot air in a blast furnace. [006] Various rotary kiln processes for production of sponge iron are available such as SL/RN process, Krupp Codir process, SIIL process etc. But the various rotary...

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A study on the accretion formation in DRI kilns and ... - IOSR… pdf

In the present work SL/RN process based plant is selected for energy conservation as it is oldest and most widely applied process. Many investigators considered sponge iron manufacturing process and suggested improvement in that [8, 10, 11]. Directly reduced iron (DRI, or called sponge iron) has been found an excellent...

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Sponge Iron Industry: The Regulatory Challenge - Centre… pdf

29 Apr 2010 ... Power consumption for a sponge iron plant depends on the process and the kiln dimensions. SL/RN process exhibits the highest energy consumption of about 22 Giga Joule (GJ) per tonne of sponge iron41. For the Krupp-CODIR process,. ACCAR process and the HYL-III process, the energy consumption...

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ACE Refractories - dri engineering - production of sponge…

Owing to the reasons stated above over the last two decades India has emerged as world's largest producer of sponge iron using non coking coal as a reductant, primarily based on SL / RN process. DRI, apart from being a source for Iron provides several advantages over scrap as a feed material for steel making: Sponge...

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Direct reduced iron - Wikipedia

Direct-reduced iron (DRI), also called sponge iron, is produced from the direct reduction of iron ore to iron by a reducing gas or elementary carbon produced from natural gas or coal. Many ores are suitable for direct reduction. Reduced iron derives its name from the chemical change that iron ore undergoes when it is heated...

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Different processes of Sponge Iron production – A… docx

Abstract. This paper deals with the sponge iron production using various processes. The characteristics of raw material used for sponge iron and reaction mechanism involved are also discussed. The various processes such as SL/RN, KRUPP-CODIR, DRC, TDR, SIIL, JINDAL etc. and their strength are described briefly.

Sponge Iron - WELSPUN STEEL LIMITED

Sizing of the Raw materials also play vital role in sponge iron manufacturing process. ... size of Iron ore, MPS (Mean particle size), its physical properties like T.I., A.I. & chemical properties like Fe (T), LOI, gangue content In Sponge Iron Process, two ... SL/RN technology is a coal based rotary kiln direct reduction process...

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Manufacturing Process - Sree Metaliks Ltd

Sponge Iron Manufacturing Process In Rotary Kiln ... The process to be adopted is the rotary kiln process using low-grade coal to reduce sponge grade iron ore. The locally available raw material, possibly to ... The SL/RN Process is the most widely used coal based reduction Technology the world. The iron ore, coal and flux...

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Rotary Kiln Process of Making Sponge Iron - New Age… pdf

Rotary Kiln Process of Making Sponge Iron. 2.1 HISTORICAL BACKGROUND. The production of steel began in ancient times; but because of the complexity and .... SL/RN Process. Presently, of the total sponge iron produced in the world, coal based rotary kiln processes contribute only about 15%, but considering India...

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Outotec® SL/RN process

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...

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Sponge Iron Manufacturers, Suppliers & Dealers in…

Sponge Iron. It is a spongy mass of iron, which is created by reducing iron ores into metallic iron. The process involves use of carbon at temperatures below the melting point of iron. Sponge iron is not more. ... Complex, Odisha, using the proven German SL/RN technology provided by more.. Visasun Coke. Jakhapura...

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Sponge Iron - Manufacturers, Suppliers & Exporters…

We are well acknowledged and reliable Supplier of Sponge Iron from Rourkela, Odisha. Sponge Iron is achieved, by reduction of Iron Ore, by using either coal-based or gas-based processing at our vendor's end. Sponge Iron, obtained after removing oxygen from iron ore, is widely used in making of steel. Customers can...

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an investigation for generation of energy ... - Semantic… pdf

ABSTRACT. During the operation, a tremendous amount of heat is generated in the coal based sponge iron plant and a significant part of this heat associated with the waste gas, remains unutilized. While utilizing this heat in the process the energy demand of the process may be reduced, which decreases the coal...

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Articles - All India Induction Furnaces Association

The technology was developed in Germany known as SLRN process in Sixties to use iron ore, mix it with limestone and then use ordinary coal. ... Sponge iron is input material not only for Electric Steel making but also in big Integrated Steel Plants who charge it in the blast furnaces or at any point where it is necessary to...

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DRI production | International Iron Metallics…

Illustrations of the principal processes are shown below. The Midrex® and Energiron gas-based processes use predominantly iron ore pellets as feedstock, but sometimes with inclusion of lump ore in the furnace charge. The SLRN coal-based process uses lump ore and, increasingly, pellets as feedstock. There are variants...

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Ironmaking Process Alternatives Screening Study,… pdf

92%. 1%. DRI. PIG IRON. OT HER. Of the Alternative Direct Iron Reduction Processes, 67% of the DRI is produced by the Midrex Shaft Furnace DRI processes. The second-most production of DRI (23%) is by the HYLSA processes. The balance is split between SL/RN (3%), Finmet (2%) and Other (predominately Corex at.

design of waste heat recovery system in a sponge iron… pdf

2.1 DRI Process of Sponge Iron making. 2.1.1 Introduction. 2.1.2 Raw Materials. 2.1.3 Theory. 2.1.4 Commercial Processes. 2.1.4.1 SL/RN Process. 2.1.4.2 Codir Process. 2.1.4.3 Accar. 2.1.4.4 TDR Process. 2.1.4.5 Jindal. 2.1.5 Advantages of DRI Process. 2.2 Waste Heat Recovery. 2.2.1 Waste Heat. 2.2.2 Classification.

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the development of a dri process for small scale eaf-based… pdf

5 Mar 2010 ... This thesis deals with the development of a new process for the production of Direct Reduced Iron. (DRI), intended for ..... Pig Iron – High carbon iron, cast into rectangles with sloping sides, typically 200mm x 100mm x 50mm. It is most commonly .... SL/RN – A coal based rotary kiln DRI process. Spirex – A...

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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 Company of Canada, Lurgi Chemie, Republic Steel Company and National Lead Corporation in 1964), which works on direct reduction of ore. This process is adopted by worldwide conventional sponge...

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Recovery and utilization of waste heat in a coal based sponge… pdf

TDR, SIIL and Jindal [3–6]. In the present work SL/RN process based plant is selected for energy conservation as it is oldest and most widely applied process. Many investigators considered sponge iron manufacturing process and suggested improvement in that [5,7,8]. With the availability of raw materials, high demand of...

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