Dear Mr., Mrs. welcome our company ALGS Group offers iron ore ( magnetite) Fe 50-60% size class: 0-1000mm price at China DAF Alashankou border 70$/1 ton, Qingdao port price 157$/1 ton bulk possible delivery quantity per month 54000 tons . There are also concentrates of iron ore (martite) size class: 0-10mm; 10-40mm Fe-50-60% the price of border delivery DAF Alashankou 80$/1 ton port of Qingdao 170$/1 ton Bulk or Pallets possible number of deliveries 20000-25000 tons per month. Payment term 30% advance payment and 70% in the form of transferable letter of credit divisible revolving within 45 days. In case of interest, please submit an application to contact us : Mr. Gabit +77079345741 Wats up
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Microsilica (silica fume) is a byproduct from silicon metal or ferrosilicon industries,is an amorphous silicon dioxide â?? SiO2 which is generated as a gas in submerged electrical arc furnaces during the reduction of very pure quartz. As the molten metal is produced, a silica-based gas is emitted. This gaseous fume, as it rises, cools rapidly and forms extremely minute,Amorphous, spherical particles. The microsilica is collected in a bag house, a system for filtering the hot air and gases vented from the furnace. This gas vapor is condensed in bag house collectors as very fine powder of spherical particles that average 0.1 to 0.3 microns in diameter with a surface area of 17 to 30 m2/g.
Microsilica can be used in concrete and refractory materials. Microsilica ,when used in concrete, it can improve concreteâ??s properties such as compressive strength, bond strength and abrasion resistance, reduces permeability,and therefore helps in protecting reinforcing steel from corrosion. At the same time, Microslica can still be used in the procustion of refractory and porcelain, to raise intensity and durability, it also can be used in paint, coating resin rubber and other high molecular as a filler material to improve the material overall performance.
