China JM

White fused alumina for refractories White fused alumina is made from redused fusion of high purity alumina powder whose content is aluminium oxide(al2o3). It has very high refractory temperature, acid and alkali corrosion resistant, stable in chemical content, high true gravity/density, low porosity rate, thermal shock resistant. It's an excellent corundum aluminium oxide refractory material. White fused alumina refractory grades is an important high end material for production of shaped and unshaped refractory products. Physical and chemical properties True gravty: ?3.60 g /cm3 Bulk density: 1.5-2 g / cm3 Mosh hardness: 10 Color: white, light blue after heat treatment Melting point: 2350 celcius degree Linear expansion coefficient index: (7-9)*10^-6/k (0 - 1600) Sizes available: 0-1mm, 1-3mm, 3-5mm, 5-8mm, 100mesh, 200mesh, 325mesh Applications of white fused alumina refractory grades Alumina bricks, alumina type refractory brick mullite box body, nozzle, spray gun, furnace and oven linear Unshaped refractory materials like ladle pouring material, drainage sand, spraying and filling material, prefabricated parts Refractory materials in steel making, metallurgical, cement, glass, ceramic, petrochemical industries Precision casting and foundry sand

Bauxite (aluminous soil; bauxite), also known as alumina or bauxite, the main component is alumina, hydrated alumina system containing impurities is an earthy mineral. White or gray, because iron and brownish yellow or pink. Density 3.45g / cm3, hardness 1-3, opaque, brittle. Extremely difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. Mainly used for aluminum smelting, manufacture refractories.

Rotary kiln calcined bauxite is obtained by calcining superior grade bauxite at high temperatures (from 850 to 1600) in the rotary kiln. This removes moisture thereby increasing the alumina content. Compared to an alumina content of about 57% to 58% in raw bauxite, calcined bauxite has an alumina content of 84% to 88%. Besides, through calcination, the density and refractory resistance will also be improved to varying degrees. The grade of bauxite can be increased greatly.

SEPPE Cenosphere is a lightweight, inert, hollow sphere filled with inert air or gas, typically produced as a byproduct of coal combustion at thermal power plants. The color of cenospheres varies from gray to almost white and their density is about 0.4-0.8 g/cm�³, which gives them a great buoyancy. Flows like a liquid, with the appearance of a powder. Provides lightweight bulk to a varied and expansive range of compounds. Cenospheres are hard and rigid, light, waterproof, innoxious, and insulative. This makes them highly useful in a variety of products, notably fillers.

As we all know, China is the world's leading supplier of bauxite, producing over three million tons per year for refractory, abrasive, and welding applications. Calcined bauxite is made of excellent bauxite ores, fired in a kiln to impart its superior abrasive qualities, hardness, and long-term frictional resistance. This materials are in stable index, homogeneous structure and excellent high-temperature performance. Its high alumina and low iron make calcined bauxite be the ideal raw material in refractory and abrasive products.

SEPPE Cenosphere is a lightweight, inert, hollow sphere filled with inert air or gas, typically produced as a byproduct of coal combustion at thermal power plants. The color of cenospheres varies from gray to almost white and their density is about 0.4-0.8 g/cm³, which gives them a great buoyancy. Flows like a liquid, with the appearance of a powder. Provides lightweight bulk to a varied and expansive range of compounds. Cenospheres are hard and rigid, light, waterproof, innoxious, and insulative. This makes them highly useful in a variety of products, notably fillers. Cenospheres are now used as fillers in cement to produce low-density concrete. Some manufacturers have begun filling metals and polymers with cenospheres to make lightweight composite materials with higher strength than other types of foam materials. Such composite materials are called syntactic foam. Aluminum-based syntactic foams are finding applications in the automotive sector. Silver-coated cenospheres are used in conductive coatings, tiles and fabrics. Another use is in conductive paints for antistatic coatings and electromagnetic shielding.

Calcium aluminate advantages: 1) Uniform chemical compositions, low melting point, high melting speed, and short smelting time; 2) It has no fluoride and doesnt erode furnace lining and ladle, and it is compact, non-absorbent,and easy to storage as well; 3) Stable phase and fast dust-reducing speed, rapid desulfurization effect stabilized at 60%, and suppresses phosphorus into molten steel; 4) Improving the protective effect and reducing erosion to ladle lining.

Supplier: Brown fused alumina, white fused alumina, semi friable fused, calcium aluminate
Buyer: Bauxite