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.
0.35mm to 4.0mm Regular spangle Dry unoiled , chromated , zinc coating 100g/m2 Standard export packing
Aluminum coils.
Galvanized iron pipes and sheets.
Galvanized steel in strip and coils width 1220mm or 1219mm.
Steel coils & raw cotton.
Aluminum foil , cling film wrap, aluminum container.
Seamless pipes, MS ERW, SAW, LSAW pipes, hollow sections, parallel flange channel, U channel , upn, H beam, hea and heb, I beams, JIS beams, universal columns, universal beams, mild steel flat bar, mild steel round bar, mild steel coils, mild steel plats, gi gratings, hot dipped gi sheet, hot dipped gi coils, hot dipped gi pipes.
Iron ore and steel.
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Chrome ore, iron ore, limestone, soap stone, gypsum, rock salt, sulphur lump.
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Gate valves Resilient seated gate valve Metal seated gate valve Material specification Material : ductile iron / cast iron Cast steel / ss 316 Rating: pn 10 / pn 16 Class : 150 / 300 / 600 / 900 / 1500 Size : dn 40 mm to dn 600 mm.
Galvanized Steel Sheet, Pre painted Steel Sheet, Electro Galvanized Sheets, Cold Rolled Steel Sheet and Hot Rolled Steel Sheet and coils All types of flat and long iron and steel products Depends
