1. Description
White tabular alumina is a kind of pure sintered corundum, which is sintered and completely shrink without adding any additive, such as mgo or b2o3, with coarse crystals and well-developed alpha al2o3 crystal structure. The tabular crystal structure is characterized by narrow pores, with more closed porosity, almost the same apparent porosity compare with fused corundum, high purity, good stability volume density, tiny refiring shrink. After high temperature treatment, tabular alumina is used for refractory and castable characterized by good thermal shock stability and flexural strength. But the price is higher than the other alumina.
2. Performance
Tabular alumina is characterized by good heating volume temperature performance and good thermal shock resistance.
3. Usage
Tabular alumina is the perfect refractory raw material, which is widely used as the aggregate for producing various alumina refractory, it also can be used in other monolithic refractory. It can replace fused alumina and white fused alumina in some application position, and improve the performance of refractory material.
4. Chemical & typical physical properties
Chemical compositions
Al2o3 99.20%min
Sio2 0.20%max
Fe2o3 0.20%max
Na2o 0.40%max
Bulk density g/cm3 3.50min
Absorbing water rate 1.5%max
Porosity rate 5.0%max
Temperature 1960 degrees celsius
Grain size mm 8-5mm, 5-3mm, 3-1mm, 1-0mm
Fine powder mesh - 220mesh, -325mesh
1, high purity al2o3, 99.20%
2, pure sintered corundum
3, for refractory bricks and casting
4, supply all the size 8-5mm, 5-3mm, 3-1mm, 1-0mm, -325mesh
Brown fused alumina slag-fesi During fusion process of brown fused alumina, the iron and metal content(mainly ferro and silicon)settle at the bottom of the arc furnace because of their higher density. After cooling down, it seperated from brown fused alumina whose content is aluminium oxide(al2o3). We select the settled metal part, crush and grade it into grains suitable for various industrial purposes. Its main content is ferro and silicon and can replace some fesi. We call it brown fused alumina-fesi. So the manufacturing process of brown fused alumina slag fesi is different from normal fesi. Because silicon is easy to react chemically with oxygen to become silicon oxide, it is used as deoxidizer in steel making industry. Silicon oxide(sio2) also produce a lot of heat, so can improve the temperature of steel. Fesi is also widely used in low alloy structural steel, spring steel, bearing steel, heat resistant steel etc. Its ferro content is typically 76%-80% and silicon content 13%-17%. Sizes can be made according to customer quest, common sizes are 0-10mm, 0-25mm etc. Applications of brown fused alumina slag-fesi Because of its hardness, it's used for sand blasting, rust removal, cleaning, polishing etc. Deoxidizer in steel making industry to improve strength, hardness and density of steel. Used as inoculant to help graphite precipitation Used as reducing agent in steel alloy industry. Newly development products like mineral processing, lithium ferro battery etc.
Pink fused aluminium oxide Pink fused alumina, also called pink fused aluminium oxide, chromium aluminum oxide, abbreviated as "pa", belongs to the group of artificial corundum. It's made from fusion of high purity alumina powder and chromium oxide in electric arc furnace. Because of its chrome content, it's a pink color material. Its main content is aluminium oxide(al2o3), with little content(about 0.7% chromium oxide and about 0.3% sodium oxide(na2o). Pink fused aluminium oxide is a hard, tough, self-sharpening, low magnetic, coarse grits, pure and clean abrasive material. Compared to white fused aluminium oxide, it has similar hardness, while better strength and cutting side. It's widely used in production of vitrified grinding wheel, resinoid grinding wheel, cutting discs, grinding head and other abrasive tools, also for sandblasting abrasvies, polishing, free grinding, cutting etc. Physical and chemical properties True gravity: ?3.9 g /cm3 Bulk density: 1.40-1.91 kg / m3 Mosh hardness: 9 Color: pink, light purple Melting point: 2200 celcius degree Sizes: f8-f220 Applications of pink fused aluminium oxide Production of ceramic and vitrified grinding wheel Grinding head and other bonded abrasives and coated abrasive tools Refractory bricks, glass oven and other refractory materials Free grinding and polishing on precision devices, mahinery parts, ceramics, precision casting etc. Clean, sand blast, polish, rust remove metal and non-metal parts
Supplier: Alumina oxide, alumina hydroxide, alpha alumina, zinc oxide, kaolin, very low soda aluminas, white fused alumina, brown fused alumina, tabular alumina, alumina hydrate, rotary kiln bauxite, shaft kiln bauxite, bauxite sintered, andalusite, alumina cement, zirconia aluminas, calcined aluminas, activate aluminas, bubble alumina, aboral, olivine sand, schmitt, refractory bricks, aluminium ingot, copper ingot, copper cathode, lead ingot, zinc ingot, lead arsenical alloy, tin ingot, calcium ingot, calcium master alloy, calcium lump, calcium groaners magnesium ingot. Antimony ingot, agm separator, negative expander, gauntlets, flame arresters, battery indicators, pvc resin, pvc separator, battery terminals, polyethylene separator, pasting paper, newspaper, glass and spare parts, chemicals, polypropylene chips, sulphur, limestone, caustic soda flake
