Description
white electrocorundum 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 alpha-Al2O3.
1. Used for refractory,furnace burden,castable,ramming compoynd, painting etc
| Section sand | fine powder/macropowder | |||
| Size | 8-5mm 6-3mm 5-3mm
3-1mm 1-0mm |
60mesh-0 80mesh-0 100mesh-0 120mesh-0 150mesh-0 200mesh-0 325mesh-0 | ||
| Chemical compositions(%) | Al2O3 | 99.5min | Al2O3 | 99.0min |
| Fe2O3 | 0.04max | Fe2O3 | 0.20max | |
| Na2O | 0.30max | Na2O | 0.40max | |
| SiO2 | 0.02max | SiO2 | 0.05max | |
2. Used for abrasives,blasting,grinding,ceramic,rust removal,surface treatment,floor coating,abrasion resistant layer etc
| Granularity sand/Granular sand/ particle size/ grit size sand/grain size sand | |||
| Size | FEPA | F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 | |
| JIS | #8 #10 #12 #14 #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 | ||
|
Chemical compositions(%) |
Al2O3 | 99.5min | |
| Fe2O3 | 0.04max | ||
| Na2O | 0.26max | ||
| SiO2 | 0.02max | ||
3. Used for abrasives ,lapping,Polishing,Polishing wax,polishing fluid,grinding stones,whetstone,abrasive stone polishing pads,abrasive discs etc
| Micropowder/burnishing powder/polishing powder | |||
|
Size |
FEPA | F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 | |
| JIS | #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 | ||
|
Chemical compositions(%) |
Al2O3 | 99.20-99.7 | |
| Fe2O3 | 0.04-0.08 | ||
| Na2O | 0.23-0.35 | ||
| SiO2 | 0.01-0.05 | ||
Main Physical Properties
| Mohs hardness | 9.0 |
| Bulk density | 1.75-1.95g/cm3 |
| Specific gravity | 3.95g/cm3 |
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