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Combination Mobile Crushing Plant

Combination Mobile Crushing Plant

Compared with fixed production lines,Combination Mobile Crusher have a shorter engineering period and rapider transition, which not only reduces the investment risk and opportunity cost of the investors, but also avoids the demolition and construction

C6X Series Jaw Crusher

C6X Series Jaw Crusher

C6X Jaw Crusher on structure and production efficiency present advanced modern technologies. Our Company's C6X Jaw Crusher can solve such problems of the existing jaw crushers as low production efficiency, difficult installation and maintenance. At pr

HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

Sticking mechanism of low grade iron ore-coal composite in

Nov 01, 2018· Iron ore-coal composite pellets were made for the rotary kiln reduction purpose. Mixtures of raw iron ore, coal, NaCl (used as additive) and bentonite (used as a binder) were pelletized into a size of 5-8 mm composite pellets. A rotary kiln (Φ1.5 m × 15 m) was built for the reduction process, as shown in Fig. 4. Composite pellets were fed into the rotary kiln from the rotary kiln tail

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Insight of iron ore-coal composite reduction in a pilot

Nov 01, 2019· A post-mortem study of iron ore-coal composite reduction in a pilot scale rotary kiln was conducted. XRD, XRD semi-quantitative phase analysis, ESEM-EDX, proximate analysis, Fact-Sage software phase diagram analysis and chemical dissolution analysis were carried out to understand the characteristics and in-situ reduction course of ore-coal composite along the axis of the kiln.

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SPONGE IRON PRODUCTION FROM ORE -COAL COMPOSITE

In order to explore the efficacy of iron ore-coal composite pellets over indurated iron ore pellets, standard charging of concentric layers of separate iron ore, coal fines, or their mixture, these pellets were tested at 1200. oC in the tunnel kiln. It was observed that metallization for indurated iron ore pellets, and concentric chargingwere limited to 80% to 83% where as composite pellets had a metallic iron

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Iron ore pelletization ScienceDirect

Jan 01, 2015· The development of organic binders and organic/bentonite composite binders and the use of hydrated lime have also been widely reported in the literature Table 15.14 lists the typical mineral phases present in iron ore pellets, leading to higher availability of the rotary kiln and higher pellet

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Cold bonded ore–coal composite pellets for sponge

Based on these considerations, cold bonded ore–coal composite pellets have been developed for sponge ironmaking in a rotary kiln. These composite pellets were tested in

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Mechanised Industry EPrints

composite pellets is expected to enhance the otherwise low productivity of rotary kiln process. Increased carbon content in the sponge iron, which is produced through composite pellets route, is an additional advantage. USE OF COMPOSITE PELLETS IN ROTARY KILN PLANT To verify the laboratory findings, and to test these pellets under industrial

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(PDF) i) Direct Reduced Iron: Production

in rotary kiln is the ability of any coal to react with carbon. reducing the cost of iron ore fed to the kiln. The optimum The composite pellets are used as feed material in.

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THE KRUPP SPONGE IRON PROCESS PRODUCTION AND

compressive strength of iron ore pellets are plot-ted against the length of the travelling grate rotary kiln combination. The green pellets are first dried on the travelling grate by the stream of hot waste gas leaving the rotary kiln and then hardened to a strength of approximately 18 kgf pellet. Consisting in the present case of hemati-

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[PDF] A study on the accretion formation in DRI kilns and

Direct reduction of iron ore with aid of either carbon or natural gas under controlled temperatures and pressures within a rotary kiln generates sponge iron as a product. However rotary kiln performance is adversely affected by the ring formation known as accretion. These accumulated sintered solid particles which gives formation of ring along the length of the kiln hinder material flow

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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

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Cold bonded ore–coal composite pellets for sponge

This plant had a 12 m length refractory lined rotary kiln of 8 t/day iron ore throughput capacity. Kiln operation was optimised to achieve more than 90% metallisation of sponge iron using ore–coal composite pellets. The kiln productivity increased and energy consumption decreased, compared with levels obtained when sized lump ore was used as

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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.

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Sponge Iron Production From Ore-Coal Composite Pellets in

It was observed that metallization for indurated iron ore pellets, and concentric charging were limited to 80% to 83% where as composite pellets had a metallic iron of 88% to 89%. Thermal efficiency of tunnel kiln is quiet low and depends on the length of the kiln. Present experiment show that use of composite pellets in the present kiln could

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Reduction Efficiency of Iron Ore–Coal Composite Pellets in

These composite pellets were tested in the laboratory and found to reduce very quickly, compared with lump iron ore. Composite pellets were also tested in an 8 t/day rotary kiln sponge iron plant

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Cold bonded ore–coal composite pellets for sponge

Jul 18, 2013· These composite pellets were tested in the laboratory and found to reduce very quickly, compared with lump iron ore. Composite pellets were also tested in an 8 t/day rotary kiln sponge iron plant giving enhanced productivity and lower coal consumption, and these results will be presented in Part 2 of this paper (next issue).

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Mechanised Industry EPrints

Ore-coal composite pellets, Sponge Iron, Rotary kiln. INTRODUCTION Iron ore is the basic raw material for iron and steel Industry, and India is one of the few countries in the world endowed with large reserves of good quality iron ore which can meet the growing demand of indigenous iron and steel indus-try as well as for export. The iron ore in

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Direct Reduction Behaviors of Composite Binder Magnetite

Iron ore-biomass pellets have the similar characteristics as iron ore-coal pellets, so they both can be reduced in a shaft furnace [93], a rotary hearth furnace [94], or a rotary kiln [95], etc.

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THE KRUPP SPONGE IRON PROCESS PRODUCTION AND

compressive strength of iron ore pellets are plot-ted against the length of the travelling grate rotary kiln combination. The green pellets are first dried on the travelling grate by the stream of hot waste gas leaving the rotary kiln and then hardened to a strength of approximately 18 kgf pellet. Consisting in the present case of hemati-

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[PDF] A study on the accretion formation in DRI kilns and

Direct reduction of iron ore with aid of either carbon or natural gas under controlled temperatures and pressures within a rotary kiln generates sponge iron as a product. However rotary kiln performance is adversely affected by the ring formation known as accretion. These accumulated sintered solid particles which gives formation of ring along the length of the kiln hinder material flow

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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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Rotary kiln Wikipedia

A rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process.Materials produced using rotary kilns include: Cement; Lime; Refractories; Metakaolin; Titanium dioxide; Alumina; Vermiculite; Iron ore pellets; They are also used for roasting a wide variety of sulfide ores prior to metal extraction.

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Ironmaking in Rotary Hearth Furnace IspatGuru

May 17, 2017· The iron oxide feed to a DRyIron furnace is in the form of green pellets/briquettes made of fine iron oxides and coal or coke which eliminates the pre-drying of the pellets. Under ideal high-temperature (around 1300 deg C) theoretical conditions, iron oxide reacts with fixed carbon to form metallic iron in the briquette with the release of CO2.

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Study on Direct Reduction of Low-Grade Iron Ore-Coal Mini

Mar 11, 2018· Two main tasks were completed for mini-pellets in rotary kiln: the reduction of iron oxides in the range of 15.0–4.5 m as well as migration and beneficiation of metallic iron, facilitating the subsequent separation of iron and gangue minerals.

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Prospects for Coal-based Direct Reduction Process

rotary kilns. Pellets, or lump-ore, mixed with coal are/is charged into the rotary kilns2) and heated by coal burners to produce DRI. To avoid the significant formation of the kiln rings, their operating temperatures must be maintained in a range from 1,000 to 1,100℃3). As a result, the processes require about 12 hours of reduction

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