Brown Aluminium Oxide Sand for Refractory,0-1mm, 1-3mm, 3-5mm, 5-8mm  

Brown fused alumina, local name, also known as carborundum, is made of alumina, carbon materials, scrap iron three kinds of raw materials in electric arc furnace melting reduction and of brown alundum, reason for this name.Brown fused alumina is mainly chemical composition is AL2O3, and its content from 95.00% to 95.00%, the other contains a small amount of Fe, Si, Ti, etc.Brown fused alumina is the most basic of abrasive, grinding performance is good, because of its applicability is wide and cheap, are widely used.

Size:0-1mm, 1-3mm, 3-5mm, 5-8mm

Chemical Index as below:

Al2O3       95.3% -96.5%

SiO2        <1.00%

Fe2O3       <0.25%

TiO2        1.6%-2.8%

CaO         ≤ 0.45%

Brown fused alumina called industrial teeth: mainly used in refractory materials, grinding wheel, sand blasting.
1, used in the manufacture of high-grade refractory materials, castable, refractory, etc.
2, sandblasting abrasive hardness is moderate, high packing density, no free silica, than major, good toughness and is the ideal "environmental protection" type sand blasting materials, widely used in aluminum, copper profile glass, washing jeans precision molds, and other fields;
3, free abrasive, abrasive abrasive, applied to the tube, optical glass, monocrystalline silicon, glass, crystal glass lens, clock, jade in areas such as free grinding, grinding is adopted widely in the domestic advanced materials;
4, and resin abrasive, abrasive has color appropriate, good hardness and toughness, suitable particle cross section type and keeping degree blade, used in resin abrasive, ideal effect