Iron Ore Magnetite The key economic parameters for magnetite ore being economic are the crystallinity of the magnetite, the grade of the iron within the banded iron formation host rock, and the contaminant elements which exist within the magnetite concentrate. The size and strip ratio of most magnetite resources is irrelevant as a banded iron formation can be hundreds of meters thick, extend hundreds of kilometres along strike, and can easily come to more than three billion or more tonnes of contained ore. The typical grade of iron at which a magnetite-bearing banded iron formation becomes economic is roughly 25% iron, which can generally yield a 33% to 40% recovery of magnetite by weight, to produce a concentrate grading in excess of 64% iron by weight. The typical magnetite iron-ore concentrate has less than 0.1% phosphorus, 3â??7% silica and less than 3% aluminium. Currently magnetite iron ore is mined in Middle East,Australia& Canada Magnetite bearing banded iron formation is currently mined extensively in Brazil, which exports significant quantities to Asia, and there is a nascent and large magnetite iron-ore industry in Australia. We can supply Iron ore from lower grade of 40% Fe to 65% Fe. Magnetite is magnetic, and hence easily separated from the gangue minerals and capable of producing a high-grade concentrate with very low levels of impurities The grain size of the magnetite and its degree of commingling with the silica groundmass determine the grind size to which the rock must be comminuted to enable efficient magnetic separation to provide a high purity magnetite concentrate. This determines the energy inputs required to run a milling operation. Mining of banded iron formations involves coarse crushing and screening, followed by rough crushing and fine grinding to comminute the ore to the point where the crystallized magnetite and quartz are fine enough that the quartz is left behind when the resultant powder is passed under a magnetic separator. Generally most magnetite banded iron formation deposits must be ground to between 32 and 45 micrometers in order to produce a low-silica magnetite concentrate. Magnetite concentrate grades are generally in excess of 70% iron by weight and usually are low phosphorus, low aluminium, low titanium and low silica and demand a premium price.
Due to the high density of hematite relative to associated silicate gangue, hematite beneficiation usually involves a combination of beneficiation techniques. One method relies on passing the finely crushed ore over a slurry containing magnetite or other agent such as ferrosilicon which increases its density. When the density of the slurry is properly calibrated, the hematite will sink and the silicate mineral fragments will float and can be removed. We can supply good quantities of Iron ore from India,Middle East and CIS countries.
Iron ore and steel.
Crude oil, bitumen, iron ore.
Chrome ore, iron ore, limestone, soap stone, gypsum, rock salt, sulphur lump.
Particle size - 2 microne density 0.5 Oil absorption -30 Flow point 20 25 kg Paper bag
Galvanized iron pipes and sheets.
I have Gypsum Bentonite Granules for sale. Origin India. Specifications will be given on request.
Chrome ore lumpy, chrome ore friable.
Mill scales.
Minerals.
Sugar, all types & kinds of oil, olives, tomato paste, rice, wheat, pasta, canned foods, dates, all types & kinds of herbal spices, all types & kinds of chemical, coal, oil & gas, all types & kinds of office and schools stationery and supplies. Paper, pencil, books, color wax, toys, diaper, clay, crayons. Chalk, shoes, all types & kinds of shoes, bags, all types & kinds of solar and street lights, wires, led lights, it equipment, toners, cartridge, security rolled paper and envelopes, furniture, promotional gift items.
Precipitated calcium carbonate.
Minerals, coltan, rare earth minerals, tentolites, clays, and minerals, quartz, semi precious stones.
Ball Clay, Fire Clay, Ceramic China Clay, Ceramic Pocha Clay, Grey Flint Clay, White Flint Clay And Aluminium Ore.
Aluminium ingots, copper cathode, copper milliberry, iron scraps.Trading , facilitator.
Barium sulfate, calcium carbonate, silica (quartz) granules & power, fine talc, hydrated lime, quicklime, pink salt, bentonite, dolomite powder and chips and china clay.
Metals & Minerals, Machinery & Equipments. Food Items, Fruits & Nuts.
Clinker consists of various calcium silicates including alite and belite. Tricalcium aluminate and calcium aluminoferrite are other common components. These components are often generated in situ by heating various clays and limestone. Portland cement clinker is made by heating a homogeneous mixture of raw materials in a rotary kiln at high temperature. The products of the chemical reaction aggregate together at their sintering temperature, about 1,450 C (2,640 F). Aluminum oxide and iron oxide are present only as a flux to reduce the sintering temperature and contribute little to the cement strength. For special cements, such as low heat (LH) and sulfate resistant (SR) types, it is necessary to limit the amount of tricalcium aluminate formed. The major raw material for the clinker-making is usually limestone mixed with a second material containing clay as source of alumino-silicate. Normally, an impure limestone which contains clay or silicon dioxide (SiO2) is used. The calcium carbonate (CaCO3) content of these limestones can be as low as 80%. Second raw materials (materials in the rawmix other than limestone) depend on the purity of the limestone. Some of the second raw materials used are: clay, shale, sand, iron ore, bauxite, fly ash and slag. The clinker surface and its reactions in different electrolytic solutions are investigated by scanning electron microscope and atomic force microscopy. Portland cement clinker is ground to a fine powder and used as the binder in many cement products. A little gypsum is sometimes added. It may also be combined with other active ingredients or chemical admixtures to produce other types of cement including: ground granulated blast furnace slag cement.
Limestone, garnet, stone aggregate, furnace slag, sulphur, ammonium nitrate, urea, nano silica, micro silica, kaolin, clinker, fly ash, ggbfs, coal grit, quick lime, gypsum, silica sand, salt, potassium chloride, calcium chloride, molasses, barite, bentonite, ilmenite, zircon, magnesium oxide, petcoke, diesel..Commodity trading, import, and exports