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Brown Fused Aluminum Oxide Sandblasting Abrasive Chile

The chemical properties are stable; the refractoriness is 1770℃(100 grit aluminum oxide blast media). In addition, FeO and TiO2 enter the solid phase reaction of corundum and mullite right lattice, which also plays a role in promoting sintering. China's bauxite is mostly DK type, which needs to go through three stages of decomposition and dehydration(220 grit aluminum oxide blast media), secondary mullite petrification and recrystallization sintering in the calcination process.


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The plasticity between soft clay and hard clay is called semi-soft clay(220 grit aluminum oxide). Semi-siliceous clay refers to refractory raw materials with SiO2 content of 65% to 80%. Clay is a mixture of various hydrous aluminosilicate minerals. The high-grade bauxite A12O3/SiO2 ratio is close to 2.55, which is exactly the mullite composition area, and the amount of secondary mullite produced is the largest and the most difficult to sinter(synthetic corundum price). The main chemical composition is two oxides of A12O3 and SiO2.


(brown fused aluminum oxide sandblasting abrasive chile)The closer the A12O3 content and the A12O3/SiO2 ratio in clay to the theoretical value of kaolinite minerals (A12O3, 39.5%, A12O3/SiO2=0.85), the higher the purity(fused alumina); the more kaolinite content in the clay, the better the quality. The larger the ratio of A12O3/SiO2 in clay, the higher the refractoriness and the wider the sintering and melting range(fused aluminium oxide). China Metallurgical Standard (YB/T5179-93) specifies the physical and chemical indicators of high-quality high-alumina clinker.


At 1200~1400℃, secondary mullite petrochemical causes expansion, which hinders the sintering effect(brown fused alumina); above 1400℃, the secondary mullite petrochemical reaction is basically completed, and the liquid phase promotes the dissolution-precipitation process of crystal grains, leading to densification, At this time, the promotion of sintering is essential(aluminum oxide blast media 60 grit). The cohesiveness of clay is caused by the cohesive force (divided by gravity) between clay particles.(brown fused aluminum oxide sandblasting abrasive chile)


The sintering temperature of high-grade bauxite at all levels is as follows: special grade is 1600~1700℃, grade 1 is 1500~1600℃, grade I is 1600~1700℃, grade is 1500~1550℃(brown aluminum oxide). High-alumina bauxite clinker is graded according to the A12O3 content and the content of impurities such as FeO, TiO2, CaO+MgO, K2O+NaO, and the volume density and water absorption rate of the clinker(150 grit aluminum oxide). Artificial mullite is made by sintering method and electric melting method.


(brown fused aluminum oxide sandblasting abrasive chile)The three stone minerals are irreversibly transformed into mullite and SiO2 at high temperature, accompanied by a volume effect(white alumina). However, because these three minerals are homogeneous and multi-image, that is, the composition is the same, but the crystal structure is different, so the temperature, time, speed and volume effect of conversion to mullite at high temperature are different(60 grit aluminum oxide), and the process of conversion to mullite, Morphology, and crystal orientation are also different.


Chinese industry standard YB4032--91 stipulates the classification, codes and grades of kyanite, sillimanite and andalusite(arc fused alumina): the product is divided into three categories of kyanite, sillimanite and andalusite according to the mineral structure. Kyanite concentrate-with the capital letter "1J" in the Chinese pinyin letters of "Blue" and "Fine" as the code(fused aluminum oxide); according to the content of A12O3, Kyanite concentrate is divided into two grades of LJ-58 and LJ55.(brown fused aluminum oxide sandblasting abrasive chile)


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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