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Processing Iron Sand To Sponge Iron By Rotary Kiln

OPERATIONAL ASPECTS OF SPONGE IRON

2012-1-10  1. Krupp Sponge Iron Process The Krupp. 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 ...

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SPONGE IRON PLANT

2018-9-24  Sponge iron being magnetic gets attracted and gets separated from non- magnetic char. The iron ore and coal crushed and screened to respective sizes are fed to rotary kiln through feed tube in pre-determined ratio. The rotary kiln is slightly inclined at an angle 2.5 deg and rotated by

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Flow of materials in rotary kilns used for sponge iron ...

Looking forward to the need of developing coal-based sponge iron technology in India, a country having no significant resources of either coking coal or natural gas, the Research and Development Division of the Tata Iron and Steel Company Limited (TISCO) set up a rotary kiln based direct reduction pilot plant in 1975. In this pilot plant, a totally indigenous technology for production of ...

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A Thesis Submitted for Partial Fulfillment of the Degree ...

2012-5-29  3 sponge iron processing 10 4 rotary kiln design operation 23 5 computational fluid dynamics (cfd) its application 31 6 model development 37 7 result discussion 43 8 conclusion 54 9 reference 56 . list of figures figure no. figure caption page no. 1.1 image of a sponge iron granule 2 ...

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WELSPUN STEEL LIMITED

For the direct reduction of iron ore the main furnace used is rotary kiln. The rotary kiln is the refractory lined cylindrical vessel on which blowers are mounted the air pipes, to provide combustion air to the inside of the kiln. During lite up there is a start up burner at the kiln discharge end which is oil fired to heat up the rotary kiln.

More

Modelling and optimization of a rotary kiln direct ...

2014-8-5  The kiln model applied in this work was developed by Hatch over a number of years and has been used for several rotary kiln projects. It has its roots in a FORTRAN program that was developed by Venkateswaran (1978) to study the reduction of iron ore. The original software was used to model the operation of a 35 m pilot kiln at the Stellco company

More

Energy Audit Methodology of Sponge Iron

2014-9-15  Energy Audit, DRI Process, Sponge Iron, Kiln Efficiency, Sankey Diagram of Kiln, Coal Balancing 1. Background of This Study Sponge iron industries in India have mandatory energy performance target in terms of specific energy consump-tion (SEC). They shall have to achieve the target SEC by 31st March, 2015. The non-performing industries are

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Sponge iron from magnetite - A novel process developed

2021-10-12  Sponge Iron production usually employs the DRI Process, undertaking solid-state reduction of hematite ores with equal proportions of coal. This is brought about by the use of a coal-fired Rotary Kiln, with the environmental impact of the entire process putting

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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 ore lumps, or fines. The reduction takes place using gaseous reductants (CO + H ...

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Analysis of temperature profile and % metallization in ...

2016-6-1  A 2D CFD model of rotary kiln for sponge iron process is developed in this work using ANSYS 14.5. The present study discusses the behavior of temperature profile of the bed and gas (air) along the length of the kiln. These parameters are studied based on variation of input parameters such as angle of inclination, number of rotation and mass ...

More

Flow of materials in rotary kilns used for sponge iron ...

Looking forward to the need of developing coal-based sponge iron technology in India, a country having no significant resources of either coking coal or natural gas, the Research and Development Division of the Tata Iron and Steel Company Limited (TISCO) set up a rotary kiln based direct reduction pilot plant in 1975. In this pilot plant, a totally indigenous technology for production of ...

More

Sponge iron from magnetite - A novel process developed

2021-10-12  Sponge Iron production usually employs the DRI Process, undertaking solid-state reduction of hematite ores with equal proportions of coal. This is brought about by the use of a coal-fired Rotary Kiln, with the environmental impact of the entire process putting

More

Recovery and utilization of waste heat in a coal based ...

2012-10-4  Coal-based sponge iron process The process of the direct reduction of haematite in a rotary kiln is schematically described in the Fig. 1. Haematite and non-coking coal are fed to the kiln at controlled rates without pre-mixing and the charge moves through the kiln depending upon the rotation

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Modelling and optimization of a rotary kiln direct ...

2014-8-5  The kiln model applied in this work was developed by Hatch over a number of years and has been used for several rotary kiln projects. It has its roots in a FORTRAN program that was developed by Venkateswaran (1978) to study the reduction of iron ore. The original software was used to model the operation of a 35 m pilot kiln at the Stellco company

More

THE EFFECT OF REDUCTION TIME AND SIZE

low-grade iron ore has the potential to be reduced by using a rotary kiln. A rotary kiln is a tool used to reduce low-grade iron ore and produce sponge iron with a high metallization. This process is in accordance with the Indonesian government policies that regulate the minimum value of percentage of sponge iron metallization for export, i.e. 85%.

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WELSPUN STEEL LIMITED

For the direct reduction of iron ore the main furnace used is rotary kiln. The rotary kiln is the refractory lined cylindrical vessel on which blowers are mounted the air pipes, to provide combustion air to the inside of the kiln. During lite up there is a start up burner at the kiln discharge end which is oil fired to heat up the rotary kiln.

More

Energy Audit Methodology of Sponge Iron

2014-9-15  Energy Audit, DRI Process, Sponge Iron, Kiln Efficiency, Sankey Diagram of Kiln, Coal Balancing 1. Background of This Study Sponge iron industries in India have mandatory energy performance target in terms of specific energy consump-tion (SEC). They shall have to achieve the target SEC by 31st March, 2015. The non-performing industries are

More

(PDF) Operation of Coal-Based Sponge Iron Rotary Kiln to ...

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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Excellent Sponge Iron Kiln To Deal With Your ... - Rotary Kiln

Sponge iron kiln’s cylinder: The design of the sponge iron rotary kiln cylinder is more reasonable. The cylinder is rolled with a Q235-B steel plate to ensure five mechanical properties, usually with automatic welding. The wall thickness of the cylinder is generally 25 mm, and that of the firing zone is 32 mm.

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Analysis of temperature profile and % metallization in ...

2016-6-1  A 2D CFD model of rotary kiln for sponge iron process is developed in this work using ANSYS 14.5. The present study discusses the behavior of temperature profile of the bed and gas (air) along the length of the kiln. These parameters are studied based on variation of input parameters such as angle of inclination, number of rotation and mass ...

More

Direct reduction process in a rotary kiln ...

We claim: 1. In a process for directly reducing iron oxide-containing material to produce sponge iron in a rotary kiln by treatment with solid carbonaceous reducing agent having a high content of volatile combustile components, in which the charge is moved through the rotary kiln opposite to the direction of flow of the kiln atmosphere, oxygen-containing gases are blown at controlled rates ...

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sl rn technology for prdution ofsponge iron

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...

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Excellent Sponge Iron Kiln To Deal With Your ... - Rotary Kiln

Sponge iron kiln’s cylinder: The design of the sponge iron rotary kiln cylinder is more reasonable. The cylinder is rolled with a Q235-B steel plate to ensure five mechanical properties, usually with automatic welding. The wall thickness of the cylinder is generally 25 mm, and that of the firing zone is 32 mm.

More

WELSPUN STEEL LIMITED

For the direct reduction of iron ore the main furnace used is rotary kiln. The rotary kiln is the refractory lined cylindrical vessel on which blowers are mounted the air pipes, to provide combustion air to the inside of the kiln. During lite up there is a start up burner at the kiln discharge end which is oil fired to heat up the rotary kiln.

More

Modelling and optimization of a rotary kiln direct ...

2014-8-5  The kiln model applied in this work was developed by Hatch over a number of years and has been used for several rotary kiln projects. It has its roots in a FORTRAN program that was developed by Venkateswaran (1978) to study the reduction of iron ore. The original software was used to model the operation of a 35 m pilot kiln at the Stellco company

More

Energy Audit Methodology of Sponge Iron

2014-9-15  Energy Audit, DRI Process, Sponge Iron, Kiln Efficiency, Sankey Diagram of Kiln, Coal Balancing 1. Background of This Study Sponge iron industries in India have mandatory energy performance target in terms of specific energy consump-tion (SEC). They shall have to achieve the target SEC by 31st March, 2015. The non-performing industries are

More

Super Refractories - Sponge Iron Production

2019-8-26  For Sponge Iron production by Direct Reduction Process CUMI offers the following solutions. COAL BASED SPONGE IRON ROTARY KILN. svenska casino spel. Application. Recommended Products. AFTER BURNING CHAMBER (ABC)

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Analysis of temperature profile and % metallization in ...

2016-6-1  A 2D CFD model of rotary kiln for sponge iron process is developed in this work using ANSYS 14.5. The present study discusses the behavior of temperature profile of the bed and gas (air) along the length of the kiln. These parameters are studied based on variation of input parameters such as angle of inclination, number of rotation and mass ...

More

US2754197A - Method and a rotary kiln for the

kiln iron air rotary kiln sponge iron Prior art date 1952-09-26 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US311593A Inventor Wienert Fritz Otto Original Assignee

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Direct Reduction Process - an overview ScienceDirect

The basis of the direct reduction process is that solid sponge iron is produced by removing oxygen from the ore in a shaft furnace, rotary kiln furnace or fluidised bed. Sponge iron can be produced in the form of Direct Reduced Iron (DRI), Hot Briquetted Iron (HBI) and Cold Briquetted Iron (CBI); also Low Reduced Iron (LRI), which is pre ...

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