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White Fused Aluminum Oxide 60 Grit Poland

After calcination at 750 ℃, all the arc fused alumina samples of different forms of aluminum hydroxide are transformed into y-al2o3. After calcination at 950 ℃, they are transformed into Al2O3. Therefore, the linear relationship between the ignition loss of industrial alumina and the content of ral2o3 can be obtained. Although Al2O3 has been transformed into a-Al2O3 since 1000 ℃, there is still a garnet suppliers process for all of the transformation.


White Fused Aluminum Oxide 60 Grit Poland MOQ: 1 Ton! 19 Years Experience White Fused Aluminum Oxide Manufacturer, 35,000m² Workshop Area, Free Samples, Fast Delivery!


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As Al2O3 is converted into a-Al2O3. Due to dehydration, the specific white fused alumina surface area of industrial alumina increases rapidly, and the specific surface area coincides with the dehydration temperature. However, the difference in bulk density is kept to the highest temperature. In order to eliminate Na2O, β - Al2O3 silicon carbide price can be transformed into gas phase at high temperature by calcining aluminum hydroxide and treating alumina at high temperature.


At 400 ℃, the white aluminum oxide maximum specific surface area of gibbsite is 115m2 / g; at 600 ℃, the maximum specific surface area of gibbsite is 80m2 / g. when the temperature is increased, the specific surface area value decreases. At 1200 ℃, the specific surface area values of the two hydrates are 7.5m2/g and 3M2 / g respectively. The higher the heating temperature is, the more transparent the particles are, and the green carborundum crystal slightly increases.


MgCl2 is added to purify Na2O impurity in industrial alumina with good effect. The white corundum particles of gibbsite are dense, and the pores of gibbsite are irregular, but they are all closed at high temperature. The difference of properties between monohydrate and gibbsite has a great influence on its comminution. The silicon carbide companies melting point (theoretical value) of pure zircon is 2430 ℃. After calcination at 1450 ℃, they are transformed into a-Al2O3.


Due to different heating temperature. The sinterability of gibbsite is stronger than that of monohydrate, brown fused alumina price so the temperature increases and the bulk density increases. At 1550 ℃, the particle size of the two hydrates changed a little; when the temperature was over 1720 ℃, the fused alumina particle size distribution curves of the two hydrates were similar, and there were no more particles less than 40 pm. It can reduce the shrinkage of products.


Because industrial alumina contains porous aggregate with more Al2O3 and black corundum intermediate compounds and Na2O impurities, its sintering property is poor, and the volume shrinkage is about 14.5% during sintering, so industrial alumina can not be directly used in the manufacture of refractory products, and it should be pretreated according to its properties and the use of black oxide aluminum products, mainly including Including calcination and pulverization.


Zircon deposits are generally placers deposited on the coast or riverbank, and pink corundum also have veins associated with ilmenite or tin deposits. In China, the former is mainly distributed in Shandong, Guangdong, Hainan and other coastal areas, while the latter is mainly in Inner Mongolia. In the world, Australia, the United States, India, Brazil, Sri Lanka and other countries have quartz ores, glass beads supplier of which Australia is the largest producing country.


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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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