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iron pellet reduction in sponge iron kilns

OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION IN

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 iron.

Sponge Iron (DRI) The Hira Group

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.

US2855290A Method of reducing iron oxide to sponge iron

US2855290A US597507A US59750756A US2855290A US 2855290 A US2855290 A US 2855290A US 597507 A US597507 A US 597507A US 59750756 A US59750756 A US 59750756A US 2855290 A US2855290 A US 2855290A Authority US United States Prior art keywords pellets iron limestone reducing reduction Prior art date 1956-04-04 Legal status (The legal status is an assumption and is

Sponge Iron an overview ScienceDirect Topics

DRI, also known as sponge iron, is the product of reducing iron oxide in the form of iron ore and steel plant wastes into metallic iron, below the melting point of iron and typically in the range of 800–1200 °C. Iron oxide is charged into shaft furnace, rotary kiln, or fluidized beds in the form of pellet, iron

Accretion Control in Sponge Iron Production Kiln using

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

STUDY ON REDUCTION OF IRON ORE CONCENTRATE IN

Keywords: sponge iron, direct reduction iron (DRI), rotary kiln, magnetic, hematite, reduction process, The iron ore concentrate in the form of pellets was reduced using a rotary kiln. The process

US2855290A Method of reducing iron oxide to sponge iron

US2855290A US597507A US59750756A US2855290A US 2855290 A US2855290 A US 2855290A US 597507 A US597507 A US 597507A US 59750756 A US59750756 A US 59750756A US 2855290 A US2855290 A US 2855290A Authority US United States Prior art keywords pellets iron limestone reducing reduction Prior art date 1956-04-04 Legal status (The legal status is an assumption and is

REDUCTION BEHAVIOUR OF IRON ORE PELLETS

Demand of sponge iron and pre-reduced pellets for the manufacture of different varieties of steel is increasing day by day and new solid reductants based sponge iron plans are being commissioned. In the existing blast furnace an increase in production by at least 25 to 35% can be achieved by using pre reduced iron ore.

Accretion Control in Sponge Iron Production Kiln using

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

STUDY ON REDUCTION OF IRON ORE CONCENTRATE IN ROTARY KILN

In this research, prior pellets preparation a magnetic oxidation process on iron ore concentrate was also conducted and changed the magnetite into hematite. The reduction process on its pellets produced 94.15% metallization at 1,100°C, and the DRI contained 97.85% of Fe total,85.32% of Fe metal and 5.35% of Fe oxides.

(PDF) PEMBUATAN SPONGE IRON DARI BIJIH BESI LAMPUNG

The process of reduction of iron ore pellets in a rotary kiln and shaft furnace has done fairly satisfactory. In the research that has been conducted in 2011 produced sponge iron with

SPONGE-IRON Shakambhari Group

In the Direct Reduced Iron (DRI) plant, production of sponge iron using a solid reductant involves reducing iron ore (lumps/pellets) with a carbonaceous material such as coal. The reduction is carried out in a rotary kiln (which is inclined and rotates at a pre-determined range of speeds) at a stipulated temperature (850°C -1,500°C).

SPONGE IRON PRODUCTION FROM ORE -COAL

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

A Thesis Submitted for Partial Fulfillment of the Degree

3.3 Schematic of optimised Rotary kiln sponge iron making process 21 of iron ore (in the form of lumps, pellets or fines) by a reducing gas produced from natural gas or ores are suitable for direct reduction process. Sponge iron is produced in a powdered form so, it acts as a

Product & Services Tata Steel Long Products Limited

Simultaneously, iron ore fines are agglomerated into sinter and pellets through the sinter and pellet plants, respectively, and iron ore lumps are reduced to DRI in the sponge iron kilns. The sinter, pellets, metallurgical coal and quartzite are fed into the blast furnace where the mixture, through a reaction with preheated air, is reduced into

Reduction Efficiency of Iron Ore–Coal Composite Pellets in

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

Sponge Iron Production Process Arij Trading

Market share: About 23% of sponge iron total production. 4) Tunnel furnace process . This process is the oldest direct reduction method. In this method, Thermal coal is mixed with iron ore as a reducing agent. Natural gas generates the required reduction temperature, and reduction is performed on Silicon Carbide (SiC) Crucibles in a tunnel furnace.

Iron Pellets IndiaMART

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

Direct Reduced Iron By Tunnel Kiln

CN1804049A Tunnel kiln without exterior combustion. The relates coal-base direct reduction process for sponge iron with different shape by tunnel kiln without outer combustion chamber and the combination comprises as shown in abstract figure: to iron concentrate, firing pellet, cooling or compacting; preparing the reducer; blending, loading into retort; entering the kiln; out the kiln; and

Reduction Efficiency of Iron Ore–Coal Composite Pellets in

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

REDUCTION BEHAVIOUR OF IRON ORE PELLETS

Demand of sponge iron and pre-reduced pellets for the manufacture of different varieties of steel is increasing day by day and new solid reductants based sponge iron plans are being commissioned. In the existing blast furnace an increase in production by at least 25 to 35% can be achieved by using pre reduced iron ore.

Direct Reduced Iron Kiln / Sponge Iron Production Kiln

Direct Reduced Iron Kiln / Sponge Iron Production Kiln / DRI Production Kiln . Direct-reduced iron (DRI), also called 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.

SPONGE IRON Lloyd’s Metals

Sponge Iron We are the leading manufacturer of Direct-reduced iron (DRI), also called sponge iron, which 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. What is Sponge Iron? Sponge iron is

(PDF) Modeling of Rotary Kiln for Sponge Iron Processing

DRI based steel making is therefore the only answer.Sponge iron, also called Direct-reduced iron (DRI), 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.

IS 15774 (2007): Sponge Iron/Directed Reduced Iron (DRI

Direct reduction (DR) is a metallurgical process of producing iron from iron oxides (mainly in the form of lump ore or pellets) directly in the solid phase, that is without going through the molten stage as occurs in blast furnace or other melting processes.

SPONGE IRON PLANT

The Rotary Kiln process is a well-established process for production of coal based sponge iron. Rotary kiln of certain dia and length is provided for reduction of Iron Ore into sponge iron using non-coking coal as reductant and Dolomite as sulphur scavenger; however the Diameter and Length are to be designed based on the Plant Capacities.

Convert your sponge iron plant into a cast iron plant and

MAGMA produces pig iron from iron ore, by the method of liquid-phase reduction of iron. In the process, iron ore fines & limestone are pre-heated by the off-gases of the smelting chamber in a rotary kiln, to temperatures of 900-1,000°C & then hot-charged into the MAGMA chamber. Coal is directly burnt in oxygen inside MAGMA.

Product & Services Tata Steel Long Products Limited

Simultaneously, iron ore fines are agglomerated into sinter and pellets through the sinter and pellet plants, respectively, and iron ore lumps are reduced to DRI in the sponge iron kilns.

sponge iron process

Jul 29, 2010 The second half of kiln is called reduction zone where major amount of Oxygen contained in the iron ore is removed leaving metallic iron (Fe). De-sulphurisation in the Rotary Kiln is effected by calcined limestone/dolomite. The chemical reactions taking place at various zones in the rotary kiln are as given below: C + 02 > CO2

Energy survey of the coal based sponge iron industry

Sep 01, 2015 Sponge iron is a metallic mass with honeycomb structure. It is produced by direct reduction of iron ore in the presence of coal and air. Since last few years, sponge iron has emerged as an alternate raw material for steel making. The Indian Government has recognized sponge iron as a vital sector for growth of Indian steel industries.

Iron Ore Pelletizing Process: An Overview IntechOpen

Jul 10, 2017 The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, the content of iron in ore deposits has deteriorated and low-grade iron ore has been processed. The fines resulting from the concentration process must be agglomerated for use in iron and steelmaking. This chapter shows the status of the pelletizing process

Iron Pellets IndiaMART

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.

Sponge Iron DRI, स्पंज आयरन in Pandri, Raipur,Hira

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