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iron ore blue dust effect in rotary kiln

Iron Ore Pelletization Technology and its Environmental

Jan 01, 2015· Iron Ore Fines/blue dust cannot be charged in the blast furnace directly since they block the passage for ascending gas inside the feed. The rotary Kiln provides constant mixing of the pellets, bringing all the pellets to the same temperature. parade of grate cars moves at the same speed though the drying, induration and cooling zones

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OPERATIONAL ASPECTS OF SPONGE IRON PRODUCTION IN

erection. The SL-RN process also uses rotary kiln for reducing iron ore. The plant, as shown in Fig. 2, essentially consists of raw material handling and preparation systems, rotary kiln with heat-ing arrangements for reduction of iron oxide, kiln for cooling the reduced material and the facilities for separating sponge iron from char

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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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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 and

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Coal based Direct Reduction Rotary Kiln Process IspatGuru

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 degree and rotated by AC variable speed motor at a variable speed ranging from 0.2 rpm (revolutions per minute) to 1.0 rpm.

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Pollution in the sponge iron industry SlideShare

Jul 31, 2013· Sources of Air Pollution Process 1. Combustion of coal in the preheating zone, kiln 2. Oxidation of iron ore in the process zone, kiln 3. Flue gas from the kiln through the upper end. 4. Dust of char, unburnt lime, sulphur, alumina and others through the discharge end. 5. Flue gas through the cap of the After Burn Chamber. 6.

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(PDF) MINIMIZATION OF CEMENT KILN DUST

Kiln Dust to be managed outside the kiln, it al so reduces the need for limestone and other raw materials, which saves natural resources. The value of Cement Kiln Dust is not limited to its use

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Iron Ore Pellatisation Application in Steel Industry

Vale S.A opened a 9 MTPA (2 x 4.5) Iron ore pellatisation plant in Sohar, Sultanate of Oman., on March 3rd, 2011. High grade iron ore for the plant is imported from Brazil & finished product is sold to Steel plants globally as a raw material feed for Blast furnace or Electric arc furnace.

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rotary kiln improve ore processing

New mexico rotary kiln processing iron ore. New mexico rotary kiln processing iron ore. Building Materials Equipment Building materials equipment mainly includes cement production equipment, activated lime production equipment, etc., standardized production processes to ensure the smooth operation of equipment and processes, and ensure the interests of customers.

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STUDY ON REDUCTION OF IRON ORE CONCENTRATE IN

addition the type of minerals in the iron ore as the feed consists of hematite and magnetite, which affects to the product quality as a result of ore reduction as well as degradation of granules that causes dusting. Nowadays, the DRI making using a rotary kiln technology is still not showing an optimum result.

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Iron Ore Pelletization Technology and its Environmental

Jan 01, 2015· Iron Ore Fines/blue dust cannot be charged in the blast furnace directly since they block the passage for ascending gas inside the feed. The rotary Kiln provides constant mixing of the pellets, bringing all the pellets to the same temperature. parade of grate cars moves at the same speed though the drying, induration and cooling zones

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Mechanisms of Deposit formation in the Grate-kiln Process

This study was conducted with the objective of addressing the effect of disintegrated iron-ore pellet dust on deposit formation and the mechanisms behind deposition (slagging) in the grate-kiln process.Because of climate change and other pollution concerns, there is

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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 and

More

(PDF) MINIMIZATION OF CEMENT KILN DUST

Kiln Dust to be managed outside the kiln, it al so reduces the need for limestone and other raw materials, which saves natural resources. The value of Cement Kiln Dust is not limited to its use

More

Pollution in the sponge iron industry SlideShare

Jul 31, 2013· Sources of Air Pollution Process 1. Combustion of coal in the preheating zone, kiln 2. Oxidation of iron ore in the process zone, kiln 3. Flue gas from the kiln through the upper end. 4. Dust of char, unburnt lime, sulphur, alumina and others through the discharge end. 5. Flue gas through the cap of the After Burn Chamber. 6.

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Iron Ore Pellatisation Application in Steel Industry

Vale S.A opened a 9 MTPA (2 x 4.5) Iron ore pellatisation plant in Sohar, Sultanate of Oman., on March 3rd, 2011. High grade iron ore for the plant is imported from Brazil & finished product is sold to Steel plants globally as a raw material feed for Blast furnace or Electric arc furnace.

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Direct Reduced Iron (DRI) International Iron Metallics

In India there are many small rotary kiln furnaces producing DRI, known locally as sponge iron, using coal as energy and reductant source. Some of the sponge iron plants are captive to steel mills, but there is a significant domestic merchant market, India producing 57% of

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Kiln vs flash calciner FLSmidth

The rotary kiln system is well suited for converting larger particle sizes and the integration of the cyclone preheater greatly improves specific energy consumption over just a straight kiln. It also reduces the size of the kiln and makes treatment of off gases very simple because the heat is removed prior to treatment.

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rotary kiln improve ore processing

New mexico rotary kiln processing iron ore. New mexico rotary kiln processing iron ore. Building Materials Equipment Building materials equipment mainly includes cement production equipment, activated lime production equipment, etc., standardized production processes to ensure the smooth operation of equipment and processes, and ensure the interests of customers.

More

liming liming –– Iron Ore Pelletization Iron Ore

This was the fourth liming Grate Kiln iron ore pelletizing plant installed for LKAB and the largest system constructed to date Equipment Specifications : Traveling Grate 5664 mm x 70240 mm Rotary Kiln 7470 mm diameter x 6858 mm diameter x 40000 mm long Annular Cooler 28041 mm x 3657 mm Plant Commissioning : April 2008 Iron Ore Feed

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New Concept of Hot Metal Production using Rotary Kiln

To reduce dust development during rotary kiln process, sintering plant might be installed. Similar technique was patented by Harman and Loftus (US Patent 2.526.658) in 1950 (process for smelting

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Introduction to Iron ore Pellets and Pelletizing processes

It is an agglomerating process of converting iron ore fines into ‘uniformed sized iron ore pellets’ which can be charged directly into a blast furnace (BF) or into a vertical furnace or rotary kiln normally used for the production of direct reduced iron (DRI). The iron ore pellets are shown in Fig 1.

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Report to Congress on Cement Kiln Dust: Cement Industry

in a rotary kiln, followed by cooling, finish mixing, and grinding. This is the manner in which the more resistant to the effects of repeated freezing and thawing and of the deicing agents used on sand, clay, iron ore, and/or other minerals and mineral processing residues. Cement production involves heating these raw materials, usually

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