low price new iron ore crushing production line in malacca

india iron ore mining plant equipment for sale supplier,hematite crusher,chromite processing

india iron ore mining plant equipment for sale supplier,hematite crusher,chromite processing

Large numbers of iron ore mines are in operation in Orissa, India to meet theinternal and export demand of iron ore for iron and steel making. During the process of mining relatively lower grade iron ore containing 56-58% Fe is also being generated and stockpiled separately due to less market and industrial value. The accumulation of these lower grade lumps and fines are increasing day by day due to increase in the regular production of iron ore for steel industries. Simple washing of these low grade ores by scrubbing could not upgrade the iron content as evidenced from some laboratory studies.

Pelletizing plant iron ore involves different types of equipment. The main areas or processes are the hub, ball, induration and handling. The concentrator is where the ore is ground to a fine particle size typically 80 % - 45 micron powder and other impurities separated by magnetic separation and flotation . The area of agglomeration is where the powder ore is mixed with water, a binder and rolled in rotating drums to create spherical balls . The area of induration fact can be broken down into three areas: grid, oven, cooler. The grate surface is where the pellets are dried and the curing process is started. Pellets at this stage are more stable and can be stored in the oven without braking. The oven is used to conduct heat in the pellets to force the reaction throughout the pellet. In an effort to recover all of the heat that is present in the pellet after the oven, the granules fall into a cooling device .

Hematite is weak magnetic associated ore. The Mohs hardness of the hematite is 6. The flow of the technics would be: 1st stage ore washing--storage--1st stage crushing--2nd stage crushing--3rd stage crushing--2nd stage ore washing--storage--feeding ore into rotary kiln--magnetizing roasting--ore cooling--storage--ore milling--magnetic separation--dehydrate--fine ore.

Hematite iron ore mobile crusher is developed based on the idea of design series iron ore crushing equipment , which expands the scope of coarse and fine grinding crushing.Our Mobile Crusher novel hematite iron idea is designed according to the design of the adaptation completely different iron crushing condition , eliminating obstacles due to location, environment, the basic configuration , thus providing simple, efficient equipment crushing at low cost. Our mobile crusher hematite iron ore crusher includes cone crusher series mobile , the series of mobile crusher crusher crusher series mobile crusher and crawler type mobile crusher jaw impact. This series Hematite iron ore crusher really supply simpler more efficient less expensive machines for customers.

In terms of crushing and grinding equipment, you have the following choices : jaw crusher, impact crusher, cone crusher, ball mill, vertical mill, trapezium mill, super thin grinding mills and so on . Each type of crusher and has different models, so you can choose the one that suits according to your actual situation.

As I mentioned above, the separation method used chromite ore is magnetic separation, you can choose our high quality and a magnetic separator at low prices . We can also provide you with vibrating feeder, vibrating screen, belt conveyor, dryer and so on.

Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimization, filler content control, gradation control, water content control, and environmental protection into a single syst

production plant of scrap iron and steel crusher - best stone crusher plant solution from henan dewo

production plant of scrap iron and steel crusher - best stone crusher plant solution from henan dewo

Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line. Dewo Machinery can provide high quality products, as well as customized optimized technical proposal and one station after- sales service.

SMBseries Scrap Metal Balers also named metal baler and scrap metal compactor are applicable in steel plants,recycling companies,ferrous&non-ferrous smelting industry to press metalscraps (scrap steel,scrap cars,scrap copper,scrap aluminum,scraps stainless steel,discarded automobiles,metal sheet,steels scrap iron) into acceptbale furnace charges (shaps:cuboid,cylinder or octagon),so as to ...

Shredder plant deliver a substantial momentum in the recovery of iron and steel scrap. With drive unit outputs of up to 12,000 HP they shred the input material, such as car bodies, in seconds. This high-energy shredding of the metals contained in end-of-life vehicles places high demands on the material and technology of the shredding system.

Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line.

Production Line Of Metal Scrap Crusher Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation ...

Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line.

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beneficiation of iron ore

beneficiation of iron ore

Beneficiation of Iron Ore and the treatment of magnetic iron taconites, stage grinding and wet magnetic separation is standard practice. This also applies to iron ores of the non-magnetic type which after a reducing roast are amenable to magnetic separation. All such plants are large tonnage operations treating up to 50,000 tons per day and ultimately requiring grinding as fine as minus 500-mesh for liberation of the iron minerals from the siliceous gangue.

Magnetic separation methods are very efficient in making high recovery of the iron minerals, but production of iron concentrates with less than 8 to 10% silica in the magnetic cleaning stages becomes inefficient. It is here that flotation has proven most efficient. Wet magnetic finishers producing 63 to 64% Fe concentrates at 50-55% solids can go directly to the flotation section for silica removal down to 4 to 6% or even less. Low water requirements and positive silica removal with low iron losses makes flotation particularly attractive. Multistage cleaning steps generally are not necessary. Often roughing off the silica froth without further cleaning is adequate.

The iron ore beneficiation flowsheet presented is typical of the large tonnage magnetic taconite operations. Multi-parallel circuits are necessary, but for purposes of illustration and description a single circuit is shown and described.

The primary rod mill discharge at about minus 10- mesh is treated over wet magnetic cobbers where, on average magnetic taconite ore, about 1/3of the total tonnage is rejected as a non-magnetic tailing requiring no further treatment. The magnetic product removed by the cobbers may go direct to the ball mill or alternately may be pumped through a cyclone classifier. Cyclone underflows usually all plus 100 or 150 mesh, goes to the ball mill for further grinding. The mill discharge passes through a wet magnetic separator for further upgrading and also rejection of additional non-magnetic tailing. The ball mill and magnetic cleaner and cyclone all in closed circuit produce an iron enriched magnetic product 85 to 90% minus 325 mesh which is usually the case on finely disseminated taconites.

The finely ground enriched product from the initial stages of grinding and magnetic separation passes to a hydroclassifier to eliminate the large volume of water in the overflow. Some finely divided silica slime is also eliminated in this circuit. The hydroclassifier underflow is generally subjected to at least 3 stages of magnetic separation for further upgrading and production of additional final non-magnetic tailing. Magnetic concentrate at this point will usually contain 63 to 64% iron with 8 to 10% silica. Further silica removal at this point by magnetic separation becomes rather inefficient due to low magnetic separator capacity and their inability to reject middling particles.

The iron concentrate as it comes off the magnetic finishers is well flocculated due to magnetic action and usually contains 50-55% solids. This is ideal dilution for conditioning ahead of flotation. For best results it is necessary to pass the pulp through a demagnetizing coil to disperse the magnetic floes and thus render the pulp more amenable to flotation.

Feed to flotation for silica removal is diluted with fresh clean water to 35 to 40% solids. Being able to effectively float the silica and iron silicates at this relatively high solid content makes flotation particularly attractive.

For this separation Sub-A Flotation Machines of the open or free-flow type for rougher flotation are particularly desirable. Intense aeration of the deflocculated and dispersed pulp is necessary for removal of the finely divided silica and iron silicates in the froth product. A 6-cell No. 24 Free-FlowFlotation Machine will effectively treat 35 to 40 LTPH of iron concentrates down to the desired limit, usually 4 to 6% SiO2. Loss of iron in the froth is low. The rough froth may be cleaned and reflotated or reground and reprocessed if necessary.

A cationic reagent is usually all that is necessary to effectively activate and float the silica from the iron. Since no prior reagents have come in contact with thethoroughly washed and relatively slime free magnetic iron concentrates, the cationic reagent is fast acting and in somecases no prior conditioning ahead of the flotation cells is necessary.

A frother such as Methyl Isobutyl Carbinol or Heptinol is usually necessary to give a good froth condition in the flotation circuit. In some cases a dispersant such as Corn Products gum (sometimes causticized) is also helpful in depressing the iron. Typical requirements may be as follows:

One operation is presently using Aerosurf MG-98 Amine at the rate of .06 lbs/ton and 0.05 lbs/ton of MIBC (methyl isobutyl carbinol). Total reagent cost in this case is approximately 5 cents per ton of flotation product.

The high grade iron product, low in silica, discharging from the flotation circuit is remagnetized, thickened and filtered in the conventional manner with a disc filter down to 8 to 10% moisture prior to treatment in the pelletizing plant. Both the thickener and filter must be heavy duty units. Generally, in the large tonnage concentrators the thickener underflow at 70 to 72% solids is stored in large Turbine Type Agitators. Tanks up to 50 ft. in diameter x 40 ft. deep with 12 ft. diameter propellers are used to keep the pulp uniform. Such large units require on the order of 100 to 125 HP for thorough mixing the high solids ahead of filtration.

In addition to effective removal of silica with low water requirements flotation is a low cost separation, power-wise and also reagent wise. Maintenance is low since the finely divided magnetic taconite concentrate has proven to be rather non-abrasive. Even after a years operation very little wear is noticed on propellers and impellers.

A further advantage offered by flotation is the possibility of initially grinding coarser and producing a middling in the flotation section for retreatment. In place of initially grinding 85 to 90% minus 325, the grind if coarsened to 80-85% minus 325-mesh will result in greater initial tonnage treated per mill section. Considerable advantage is to be gained by this approach.

Free-Flow Sub-A Flotation is a solution to the effective removal of silica from magnetic taconite concentrates. Present plants are using this method to advantage and future installations will resort more and more to production of low silica iron concentrate for conversion into pellets.

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