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Aluminum Oxide Blast Media 60 Grit Wholesale

Unmelted brown fused aluminium oxide materials may include calcareous bauxite, sintered bauxite, carbon (coke or coal), and iron oxide from the oxidation of iron scraps, which can be selected by magnetic separation, but aluminium oxide grit suppliers non-magnetic iron oxide cannot be completely selected. A small amount of unmelted material will produce brown or black spots on the ceramic parts.


Aluminum Oxide Blast Media 60 Grit Wholesale MOQ: 1 Ton! 19 Years Experience Aluminum Oxide Blast Media Supplier, 35,000m² Workshop Area, Free Samples, Fast Delivery!


If you want to buy aluminum oxide blast media 60 grit, please click our products: Brown Fused Aluminum Oxide or White Aluminium Oxide or Black Aluminum Oxide or Pink Aluminum Oxide for more information!


white corundum in this form of pollution can be tested, that is, according to the method described in the previous section, single grain brown corundum is made into a piece, and this piece is used for spot inspection. The content of zirconia in bauxite or brown corundum is seldom considered. Some studies have found that it hinders the transformation from brown corundum to blue when heated in an oxidizing atmosphere.


Generally, when the content of zirconia in white fused alumina is less than 0.25%, the calcined blue color will not be affected, but if the content of ZrO2 is more than 0.25%, the calcined color tablet should be made for inspection. Calcium oxide is the main alkali metal oxide found in white fused alumina price. Cao, together with sodium oxide (Na2O) and potassium oxide (K2O), forms β - alumina in brown corundum, which is characterized by low toughness.


A small amount of alkali impurities can combine a large amount of alumina, which will become α - alumina grains in black aluminum oxide media. β - alumina eventually becomes a part of the glass slag phase, thus increasing the glass phase in the brown corundum. Because they are easy to be broken and refined, their particle size tends to concentrate in the range of fine particles. Therefore, the CaO content of all white fused aluminium oxide raw materials must be monitored. 


The basic impurity can reduce the melting point of glass phase, which leads to the decrease of the working temperature of pink aluminium oxide. In some resin bonded abrasives, it is worrying that the long-term storage of alkaline substances will corrode the resin bond system, cause the loss of bond strength, and shorten the allowable storage time of abrasives. Cao is found in calcareous bauxite and in coke and coal used as reductant in the smelting of fused aluminium oxide.


Zirconia is naturally present in some bauxite and cannot be removed during smelting. The white aluminum oxide maximum permissible content of Cao in brown corundum depends on the application. In the application of high quality abrasives and advanced refractory materials, the upper limit of CaO content in pink fused alumina block is ≤ 0.15%. In applications with low requirements, the allowable value of CaO content can be < 0.25%, or even ≤ 0.3%.


Generally, the sulfur content in white aluminum oxide abrasive can not reach the level that causes problems. The source of sulfur is usually brought in by coke or coal used as reducing agent during smelting. From the point of view of environment and product quality, carbon sources with low sulfur content are needed. In the smelting process, the carbon source with high sulfur content will cause the furnace to emit bad smell smoke. For white aluminum oxide blast media particles, the common demand is CaO content < 0.1%.


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Brown Fused Alumina And White Fused Alumina MOQ: 1 Ton! 19 Years Manufacturing Exprience, 35,000m² Workshop Area, Factory Price, Free Samples, Fast Delivery!

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