Abrasive Brown Fused Aluminum Oxide Corundum - China

Brown corundum, usually called emery, is made of bauxite, carbon materials and iron dust.

Put the three kinds of raw materials in the electric furnace and then melt, reduction, Finally get the brown corundum.

The chemical composition of the brown corundum is Al2O3, and the content is 94.5%-97%, the other part contains a small amount of Fe, Ti and so on.

Physical properties: Crystal form trigonal system Chemical properties: amphoteric and react with acid, slightly acid corrosion in aqua regia and hydrofluoric, react with alkali, the Knoop hardness 2000-2200kg/mm2, Mohs hardness 9.0, color dark brown and after burning, it gets to be deep blue, the melting point 2250C and the highest use temperature 1900C.

The main component of the brown corundum is alumina, the content of the alumina determines the degree of the quality, the less content of the alumina, the lower hardness.

Higher toughness than SIC, the bulk density≥3.85g/cm3 - high refratoriness up to 1850C.

Application: As corundum has excellent high temperature properties and mechanical strength and other properties, which is widely used in metallurgy, machinery, chemicals, electronics, aviation and defense and many other industrial fields.

Its main use is as follows.

due to high temperature resistance, corrosion resistance, high strength and other properties, it is used as steel sliding nozzle, smelting rare precious metals, special alloys, high purity metal, glass wire drawing, the production of laser glass crucible and utensils;, Such as refractory materials, ceramics, ironmaking blast furnace lining (walls and tubes); physical and chemical utensils, spark plugs, heat and oxidation resistant coating.

SiO less than 0.5% of the low-silicon sintered corundum brick is carbon black, boron chemical, chemical fertilizer, ammonia synthesis furnace and the furnace for the special furnace lining.

Chemical analysis:

Al2O3(min) 92%

SiO2(max) 2%

Fe2O3(max) 2%

TiO2(max) 4%

Physical characteristics:

color Brown

Mohs Hardness 9.0

Melting point 2250℃

Maximum service temperature 1850℃

Bulk density 1.53-1.99g/cm3

Specific gravity 3.6-3.9g/cm3

Company Contact:

• Posted By: Zhengzhou Haixu abrasives Co., Ltd.

• Phone: +86 13526538098

• Address: 1 building,Lvdi Centre,DaXue Road Zhengzhou city , zhengzhou, henan, China, Zhengzhou , Henan , China

• Email:

• Website: https://whitecorundum.com

• Business Description: Zhengzhou Haixu abraisives Co., Ltd, is specialized in production and sale of abrasives, our main products are white fused aluminum oxide, brown fused aluminum oxide , glass beads, boron carbide , silicon carbide and other other related products running under the certifications GB, ISO, FEPA and JIS, all staff from HAIXU ABRASIVES hope to cooperation with you sincerely , and finally to get win-win situation