white corundum,also called White Fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase α-Al2O3.
Zhengzhou haixu Abrasives Co.,ltd,founded in 1999,has produced white corundum for more than 24years,we produce macrogrit and micropowder.
Macrogrit includes grits of F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F100 F120 F150 F180 F220
Micropowder includes powder of F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 1200 F1500 F2000
Today we mainly introduce the white corundum grit F60,the specification is as follows:
AVERAGE CHEMICAL COMPOSITION(TYPICAL)
Al2O3 ≥99.5%
Na2O ≤0.35%
Fe2O3 ≤0.06%
SiO2 ≤0.05%
CaO ≤0.05%
MgO ≤0.03%
K2O ≤0.02%
LOI ≤0.10%
PHYSICAL PROPERTIES(TYPICAL)
Specific Gravity ≥3.90g/cm3
Mohs Hardness 9.0
Bulk Density 1.75-1.95g/cm3
Melting Point 2250℃
Refractoriness 2100℃
PARTICLE SIZE DISTRIBUTION
MESH UM %
+40 +425 0
+50 +300 ≤30
+60 +250 ≥40
+60+70 +250+212 ≥65
+60+70+80 +250+212+180 *
-80/PAN -180 ≤3