iron pellet reduction in sponge iron kilns

Reduction Efficiency of Iron Ore–Coal Composite Pellets in ...

2015-2-13 · In order to explore the efficacy of iron ore–coal composite pellets over ordinary green pellets, indurated pellets, briquettes as well as standard charging of material in the form of concentric layers of iron ore and coal fines, or their mixture, these pellets were tested at 1,150 °C in a 7 tons per day (7 tpd) pilot tunnel kiln. Reduction of iron ore coal composite pellets in tunnel kiln ...

OPERATIONAL ASPECTS OF SPONGE IRON

2012-1-10 · Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime- stone or raw dolomite) into an inclined rotary kiln, heated counter current to

SPONGE IRON PRODUCTION FROM ORE -COAL

2014-9-2 · Keywords: Tunnel Kiln, Iron ore-coal composite pellets, Sponge iron, Thermal efficiency, Carbon utilization efficiency, Percentage metallic iron . 1. INTRODUCTION The tunnel kilns are mostly used by the ceramic industries for heating refractory and ceramic products [1-2]. In the year 1908 use of tunnel kiln started for iron oxide reduction. This

Sponge Iron - HIRA - Godawari Power & Ispat Limited

Coal based Sponge-iron is a metallic product produced through direct reduction of iron ore in the solid state.As such it is also known as Direct Reduced Iron (DRI). Iron Ore Pellet is used for reduction. After reduction of iron ore pellet the product resembles sponge because of

Sponge Iron (DRI) | The Hira Group

Coal based Sponge-iron is a metallic product produced through direct reduction of iron ore in the solid state .As such it is also known as Direct Reduced Iron (DRI). Iron Ore Pellet is used for reduction. After reduction of iron ore pellet the product resembles sponge because of

REDUCTION AND SWELLING BEHAVIOUR OF FIRED

2012-5-11 · The DR technique is one of the alternative methods of Iron making. Direct reduced iron is produced from direct reduction of iron ore by a reducing gas produced either from natural gas or coal. This process produces 97% pure iron which is called solid sponge iron or direct reduced iron

Reduction Kinetics of iron ore pellets and effect of binders

2012-7-10 · magnetite around 72.4% of iron. DRI or Sponge Iron is a porous solid-state product of direct reduction process, which is produced either in lump or pollet form. DRI is a good substitute for steel scrap for producing steel in EAF, BOF etc, which resulted a rapid growth of the sponge Iron Industry. In view of

Accretion Control in Sponge Iron Production Kiln using ...

Rotary kilns are found in many processes that involve processing of solids. This study focuses on sponge iron kiln based process. The chemical process involved in making sponge iron removes oxygen from iron ore by using a reducing agent in the form of non-coking coal [Patra et al, (2005)]. The reduction

Coal based Direct Reduction Rotary Kiln Process – IspatGuru

2017-2-14 · Most plants employ reduction process which is carried out in rotary kilns. These plants use wide variety of raw materials and non-coking coal. The quality of these materials has direct bearing on the process as well as the product. Some plants do not use iron ore directly. These plants use iron ore pellets in

WELSPUN STEEL LIMITED

Sponge iron is a metallic product produced through direct reduction of iron ore in the solid state. It is a substitute for scrap and is mainly used in making steel through the secondary route. The process of sponge iron making aims to remove the oxygen from iron ore.

Sponge Iron - HIRA - Godawari Power & Ispat Limited

Iron Ore Pellet is used for reduction. After reduction of iron ore pellet the product resembles sponge because of pores left behind after removal of oxygen. As such it is called Sponge Iron. Sponge Iron is a substitute of scrap in steel melting. Although the reduction in the kiln is not direct, the CO gas reduces the impurities and oxides of ...

complete process of sponge iron kilns

Sponge iron process uses a rotary kiln for the reduction of high grade lump ores or pellets (Fig. 1). The feed is introduced together with reducing and de-sulphurizing agents (lime-stone or raw dolomite) into an inclined rotary kiln, heated counter current to the flow of hot gas and reduced to form sponge ...

Accretion Control in Sponge Iron Production Kiln using ...

Abstract: Sponge iron is the product generated by direct reduction of iron ore with aid of either carbon or natural gas under controlled temperatures and pressures within a rotary kiln. However the performance of rotary kilns is usually adversely affected by the formation of accretion.

Sponge Iron Production From Ore-Coal Composite Pellets

Iron ore fines and the low grade beneficiated iron ore cake are directly used for manufacturing of sponge iron in tunnel kilns. The material bed in Tunnel kiln being stationary, it does not require high strength and thermal stability of the raw material. ... In order to explore the efficacy of iron ore-coal composite pellets over indurated iron ...

CHARACTERIZATION OF PROPERTIES AND REDUCTION

2010-4-12 · 3.2 Reduction Behaviour of Iron Ores The degree of reduction values of these iron ore lumps and fired pellets, reduced at 900°C for different time periods in the range 30 —120 minutes under rapid and slow heating conditions, have been summarized in Tables 3 and 4. Reduction studies of

(PDF) i) Direct Reduced Iron: Production

2016-3-30 · decades, a new route of ironmakin g has rapidly developed for direct reduction (DR) of iron ore to. metallic iron by using noncoking coal/n atural gas. This product is known as direct reduced iron ...

Iron Pellets - IndiaMART

Coal based Sponge-iron is a metallic product produced through direct reduction of iron ore in the solid state .As such it is also known as Direct Reduced Iron (DRI). Iron Ore Pellet is used for reduction. After reduction of iron ore pellet the product resembles sponge because of

WELSPUN STEEL LIMITED

Sponge iron is a metallic product produced through direct reduction of iron ore in the solid state. It is a substitute for scrap and is mainly used in making steel through the secondary route. 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 ...

Sponge Iron in Pune, स्पंज आयरन, पुणे, Maharashtra ...

Sponge iron is produced from direct reduction of iron ore (in the form of lumps, pellets or fines) by a reducing gas produced from natural gas or coal RB Steels Manjri, Pune Manjri, Near KF Bio Plant, Manjri, Pune - 411038, Dist. Pune, Maharashtra

Quality Prediction and Control in Coal-Fired Rotary Kilns ...

Sponge iron is a type of iron produced by coal based or gas-based reduction of iron ore. It is difficult to measure and control the degree of reduction or quality of the iron ore at intermediate ...

iron pellet reduction in sponge iron kilns

Iron ore pelletizing - Corporation . DR pellets are used in the direct reduction processes to produce sponge iron, ...In an effort to recoup all the heat that is currently in the pellet after the kiln, ...

SPONGE IRON – Lloyd's Metals

Sponge iron is also known as Direct Reduced Iron (DRI). Direct reduction, is an alternative route of iron making has been developed to overcome some of these difficulties of conventional blast furnaces. DRI is successfully manufactured through either gas or coal-based technology. Iron ore is reduced in solid state at 800-1050 c either by ...

REDUCTION AND SWELLING BEHAVIOUR OF FIRED

2012-5-11 · The present project work on “Reduction and Swelling Behaviour of Fired Iron Ore Pellets” was undertaken with a view to promote the effective utilization of iron ore and coal fines in sponge iron making. Presently, India has become the world leader in sponge iron production and the production of steel by DR-EAF

Reduction Kinetics of iron ore pellets and effect of binders

2012-7-10 · magnetite around 72.4% of iron. DRI or Sponge Iron is a porous solid-state product of direct reduction process, which is produced either in lump or pollet form. DRI is a good substitute for steel scrap for producing steel in EAF, BOF etc, which resulted a rapid growth of the sponge Iron Industry. In view of

Accretion Control in Sponge Iron Production Kiln using ...

Abstract: Sponge iron is the product generated by direct reduction of iron ore with aid of either carbon or natural gas under controlled temperatures and pressures within a rotary kiln. However the performance of rotary kilns is usually adversely affected by the formation of accretion.

Sponge Iron – Prakash Industries Limited

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

THE KRUPP SPONGE IRON PROCESS PRODUCTION AND

2020-5-6 · treatment by the KRUPP Sponge Iron Process. Small-scale tests have been carried out in labo-ratory-scale rotary kilns in order to assess the quality of the raw materials and to make a pre-liminary choice of ores and coals. Fig. 2 shows the three laboratory-type rotary kilns. Ores are

TO STUDY THE REDUCTION & SWELLING BEHAVIOUR

2013-12-6 · 2.5 Industrial significance- 12 2.6 Mechanism of swelling- 12-13 2.7 Thermodynamics and kinetics of iron ore reduction- 13-15 Chapter 3 16-20 3. Experimental 16-20 3.1 Material Selection- 17-18 3.2 Experimental Procedure- 18-19 3.3 Determination of degree of reduction of Iron-ore pellets- 19 3.4 Determination of degree of 19swelling- -20 3.5 Determination of Drop Number- 20

Sponge Iron in Pune, स्पंज आयरन, पुणे, Maharashtra ...

Sponge iron is produced from direct reduction of iron ore (in the form of lumps, pellets or fines) by a reducing gas produced from natural gas or coal RB Steels Manjri, Pune Manjri, Near KF Bio Plant, Manjri, Pune - 411038, Dist. Pune, Maharashtra

Quality Prediction and Control in Coal-Fired Rotary Kilns ...

Sponge iron is a type of iron produced by coal based or gas-based reduction of iron ore. It is difficult to measure and control the degree of reduction or quality of the iron ore at intermediate ...

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