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White Corundum

White Fused Alumina

White corundum is a white abrasive made from industrial alumina powder (Al2O3) with a content of over 99% and a small amount of iron oxide and silicon oxide.
White fused alumina , which belongs to a kind of artificial abrasive. It is made of high-quality aluminum oxide powder as raw material. After being cooled and solidified in a fixed furnace/dumping furnace by high-temperature smelting, it is crushed and shaped by a crusher, and after magnetic separation, sieved into various different particle size models of white corundum section sand and fine powder. The content of AL2O3 in the white corundum is above 99%, and the hardness is relatively high. It is compact in texture, high in hardness and sharp in shape.
 At the same time, the white corundum section sand and fine powder have the characteristics of high temperature resistance and good thermal stability.Therefore, it can be used as a furnace refractory material.
Appications:
 1. Used for free grinding, such as glass industry.
2. Used for friction products and wear-resistant floors.
3. Suitable for resin or ceramic bond abrasive, such as grinding wheel, cutting off grinding wheel,etc
4. Suitable for refractory, wear-resisting and refractory products.
5. Used for polishing, such as grindstone, grinding block, plate turning, etc.
6. Used for coating abrasive tools, such as sandpaper, emery cloth, sand belt, etc.
7. Used for precision casting, grinding, grinding, polishing mold production.
White Corundum: Lump

Specification  Contents	Standard Contents	Sample Contents
Al2O3	Over 98.5%	Over 99.0%
Na2O	Less 0.55%	Less 0.40%
SiO2	Less 0.05%	Less 0.02%
Fe2O3	Less 0.03%	Less 0.02%

Physical Performance

Material	Crystal Size	Specific Gravity g/cm3	Bulk Density g/cm3	Microdensity
α-Al2O3	600-1400	3.90	1.40-1.95	2200-2300

White Corundum: Powder

Partical sizesi Content	Low Cr			Mid-Cr			Hi-Cr
	A;2O3	Cr2O3	Na2O	Al2O3	Cr2O3	Na2O	Al2O3	Cr2O3	Na2O
F12-F80	Over98.5	0.20-0.45	Less0.50	Over98.2	0.45-1.00	Less0,55	Over97.4	1.00-2.00	Less0.55
F90-F150	Over98.5		Less0.50	Over98.2		Less0.60	Over97.0		Less0.60
F180-F220	Over98.5		Less0.50	Over98.8		Less0.70	Over96.5		Less0.70

Physical Performance

Material	Crystal Size	Specific Gravity g/cm3	Bulk Density g/cm3	Microdensity
α-Al2O3	600-2000	3.90	1.40-1.91	2200-2300