Introduction of brown fused alumina

Brown fused alumina is bauxite, anthracite coal, scrap iron as the main raw material, the Canon of high temperature smelting electric arc furnace and become a tan, good toughness and microhardness, 1800-2200 kg/was, acuity 3.85 g/cm3 volume density, high temperature resistance and refractoriness is as high as 1850 ℃, can be used as refractory material, also can be used as an abrasive.

My factory production of high quality corundum abrasives, has high purity, good crystallization, strong liquidity, low linear expansion coefficient, the characteristics of corrosion resistance. The dozens of refractory production enterprises have proved that the product in the application process has not initiation, not pulverization, not cracking characteristics. Especially its far higher than the traditional brown corundum price, more make it become the best in the brown just the quality of the jade of refractory aggregate and filling material.

 Brown fused alumina classification

Primary corundum: palm red, black, granular, is mainly used for precision casting, wear-resisting material, the higher requirements for abrasive industry, such as grinding wheel manufacturing fine buffing, brown corundum grinding wheel in grinding is the main type of grinding tool. In abrasive grinding wheel is to join the binder, the compact, drying, and roasting, made of a porous body. Because of the different abrasive, binder and manufacturing technology, the characteristics of the grinding wheel difference is very big, so the quality of grinding machining, productivity and economy has an important influence. The characteristics of the grinding wheel is dominated by abrasive, strength, binders, hardness, organization, there are many different kinds of shape and size and other factors determine grinding wheel;

Secondary corundum: black granule, mainly used for sanding, polishing, grinding, anti-corrosion derusting, stone carving, gauze materials, cut pieces, etc. Such as cleaning, surface coating on the surface of the workpiece before processing, change the physical and mechanical properties of the workpiece, workpiece surface finishing processing;

Level 3 corundum: black particles gray powder, can be applied to all kinds of ground floor sand required. Such as airport runways, playground, and factory use wear-resisting flooring.

Introduction of brown fused alumina

Brown fused alumina is bauxite, anthracite coal, scrap iron as the main raw material, the Canon of high temperature smelting electric arc furnace and become a tan, good toughness and microhardness, 1800-2200 kg/was, acuity 3.85 g/cm3 volume density, high temperature resistance and refractoriness is as high as 1850 ℃, can be used as refractory material, also can be used as an abrasive.

My factory production of high quality corundum abrasives, has high purity, good crystallization, strong liquidity, low linear expansion coefficient, the characteristics of corrosion resistance. The dozens of refractory production enterprises have proved that the product in the application process has not initiation, not pulverization, not cracking characteristics. Especially its far higher than the traditional brown corundum price, more make it become the best in the brown just the quality of the jade of refractory aggregate and filling material.

Brown corundum, physical and chemical properties

Physical performance: the crystal shape of trigonal system

Chemical properties: the both sexes

Reaction with acid: a slight corrosion in aqua regia and hydrofluoric acid

Reaction with alkali: only a slight reaction heat and strong alkali solution

REDOX effect: no

Density: 3.90 g/cm3

Hardness: Mr Spectral hardness of 2000-2000 Kg/was, 9.0 mohs hardness

Color: dark brown, calcined after deep blue in colour

Melting point: 2250 C

The highest use temperature: 1900 C

Specific heat (Cal/g. C) 0.26 (20-90 - C)

Heat transfer coefficient at room 900 C (Cal/cm3. SEC. C)

Refractive index: e = 1.760 w = 1.768 (Na line)

The resistivity: 30 C 300 C 900 C 1600 C (cm)

The linear expansion coefficient: 7-9 (0-1600 - C)

 Brown fused alumina purposes

Brown fused alumina called industrial teeth: mainly used in refractory materials, grinding wheel, sand blasting.

1. Sand corundum, sandblasting abrasive hardness is moderate, the bulk density is high, no free silica, than major, good toughness and okay brown fused alumina is the ideal "environmental protection" type sand blasting materials, widely used in aluminum, copper profile glass, washing jeans precision molds, and other fields;

2. The free abrasive, abrasive abrasive, applied to the tube, optical glass, monocrystalline silicon, lenses, clocks with glass, crystal glass, jade in areas such as free grinding, grinding is adopted widely in the domestic advanced materials; 3. The resin abrasive, abrasive has color appropriate, good hardness and toughness, suitable particle cross section type and keeping degree blade, used in resin abrasive, effect is ideal;

4) is coated with abrasive, abrasive abrasive paper, gauze and other manufacturers of production materials;

5. Brown fused alumina filler - is mainly used for automobile brake parts, special tires, special construction products such as led can be used as building highway pavement, airport runway, docks, car parks, industrial floor, wear-resisting material such as sports venues;

6. Filter medium, is a new kind of application field, abrasive using granular grinding for the bottom of the medium filter bed, purify drinking water or wastewater, is a new type of water filtration materials at home and abroad, especially suitable for non-ferrous metal processing, oil drilling mud weighting agent:

7. Hydraulic cutting - an abrasive abrasive cutting medium, rely on high pressure water jet cutting, basic application in the oil (gas) pipe, steel components, such as cutting, is a new type, environmental protection, safe way of cutting. Customer base: washed denim sandblasting room of shipyard shipyard steel structure factory powder factory our sandpaper, ShaBuChang crystal glass industry building floor steel hardware industry electronics qi car manufacturing coast terminals, hospital stadium parking lot. Sand industry cooperation content to all types of users such as the floor aggregate and abrasive.

8. The product is reliable, stable performance, good quality, easy to use.

 Note:

1, transport and loading and unloading, in the course of carriage, shall not use iron hook towing, should prevent and hard material mixture, not a strong vibration, friction, hit, hit, it is strictly prohibited to throw, should be light light discharge, in order to reduce the black corundum packing broken, affect the use.

2, storage: should be stored in a cool and dry place, prevent both inside and outside packing bag is broken, and prevention of be affected with damp be affected with damp and other substances in the air, adsorption effect use effect. With no toxic or harmful gases or volatile substances mixed with, keep to stay away from pollution sources.