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Aluminum Oxide 220 Grit Abrasive Price Brazil

Generally, 50% of industrial alumina or lightly burned artificial corundum and zircon concentrate are mixed, finely ground, pulp waste liquid is added as a binder, and pressed into a green body. The phase composition of the sintered corundum clinker is required to be plagioclase, mullite, a-Al2O3 and a small amount of aluminum oxide abrasive media glass phase, and there should be no free SiO2 and undecomposed aragonite.


Aluminum Oxide 220 Grit Abrasive Brazil MOQ: 1 Ton! 19 Years Experience Brown Aluminium Oxide Manufacturer, 35,000m² Workshop Area, Free Samples, Fast Delivery!


If you want to buy aluminum oxide 220 grit abrasive, please click our products: Brown Fused Aluminum Oxide or White Aluminium Oxide or Black Aluminum Oxide or Pink Aluminum Oxide for more information!


For example, the aluminum oxide blasting abrasive chemical composition of the best scallion sand produced in Guangdong is: SiO2, 32.18%, Al2O3, 0.64%, ZrO2, 66.04%. A desiliconizer is used to remove SiO2 in zircon sand, that is, like alumina corundum, at high temperature, the desiliconizer reacts with SiO2 decomposed by zircon sand to generate volatile gaseous compounds to escape, thereby preparing A low zirconium aluminum oxide 40 grit clinker containing SiO2 was obtained.


The brown fused alumina production process is as follows: the zircon sand concentrate is ground to a fine powder of not more than 0.088mm and accounting for more than 95%, and then according to the ratio (calculated based on the molar ratio of the complete reaction of the wrong sand and the desiliconizer) and the purity ≥95%. Sintered zirconium corundum is the main aluminum oxide abrasive blasting grit raw material for sintered AZS bricks. 


Desiliconizer ingredients with a particle size of ≤0.088mm, and then fully mixed, and then steel grid add an appropriate amount of organic binder in the wet mill to mix uniformly, the mud is required to be white-free, and then the brick is formed on the press and dried in a tunnel kiln. For calcination, it is necessary to appropriately adjust the aluminum oxide 220 grit abrasive pressure system in the kiln and increase the exhaust gas volume to facilitate the timely escape of gaseous products.


The reaction between desiliconizer and cinnabar sand is a solid phase reaction. Calcination temperature and brown aluminum oxide heating rate are the main factors affecting the reaction. As can be seen from the table, the chemical reaction has already occurred violently at 1450 ° C. The shorter the cart time, the faster the heating rate, the higher the desiliconization rate, synthetic corundum price and the lower the SiO2 content in the sintered corundum. 


This method can be used to produce sintered corundum materials with main crystalline phases of zirconia and corundum. The glass bead blasting media suppliers chemical composition is: SiO2, 1.0%, Al2O3, 36.83%, ZrO2, 60.92%. Use it as the main raw material, and then add some black aluminum oxide media to produce sintered AZS-41 products. The content of SiO2 in scallion sand concentrate is high. After drying, it is calcined at 1600 ° C. 


The brown aluminium oxide product has a small amount of liquid phase at high temperature, a high softening temperature under load, and is compact without cracks. For example, the corundum crystals in the calcined clinker at 1650 ~ 1750 ℃ are mostly 5 ~ 15um equiaxed crystals, among which the individual grain size is 100 ~ 200um, and occasionally we can see prismatic crystals with 50 pm×200um~200um×400um, the alumina grit grain distribution is not Even.


white aluminium oxide
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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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