Brown Fused Alumina High/Middle Bulk Density Air Cleaned Grains

Brown Fused Alumina is made of high-quality bauxite as raw material, anthracite and iron filings. It is made by arc smelting at 2000°C or higher temperature. It is crushed and plasticized by self-grinding machine, magnetically deferred to iron, sieved into various sizes, and its texture is dense and hard. High, spherical pellets, suitable for the production of ceramic, high-resistance abrasive resin and grinding, polishing, sandblasting, precision casting, etc., can also be used to manufacture high-grade refractories.

There are two ways to improve product cleanliness:
The first is to use high-power dry cleaning machines to clean F54 crude products. The machine consists of a blower and an induced draft fan. When the material enters the dry-cleaning machine, the blower is adjusted to the proper air volume to allow the material to jump up and down in the machine room, and the fine dust in the product is separated from the wood chips in the material by friction and collision between the materials; The rear induced draft fan introduces dust and wood chips with relatively light material and relatively small particles into the dust removal equipment. The cleanliness reaches over 98%.



Second, the adjustment of dry-cleaning equipment is mainly used to produce products with less than F60. Because F60 is a fine-grained product, air heating is used to eliminate static electricity and moisture to ensure the quality of dry-clean abrasive products.



The use of Brown Fused Alumina:
1. Sandblasting - abrasive medium hardness, high packing density, no free silica, a large specific gravity, good toughness, widely used in aluminum, copper profile glass, washed denim precision molds and other fields;

2. Free grinding - Grinding grade abrasives, used in kinescopes, optical glass, monocrystalline silicon, lenses, watches with glass, crystal glass, jade and other fields;

3. Resin Abrasives - Suitable for abrasives, good hardness, toughness, suitable particle cross-section type and edge retention, applied to resin abrasives, ideal results;

4. Coated Abrasives - Abrasives are raw materials for sandpaper, gauze and other manufacturers;

5. Functional fillers - mainly used for automotive brake parts, special tires, special construction products and other collar can be used as construction of highway pavement, airstrips, piers, parking lots, industrial floors, sports grounds and other wear-resistant materials;

6. Filter media - is a new type of abrasive applications, the use of granular abrasive as the bottom media of the filter bed, purification of drinking water or wastewater, is a new type of water filter material at home and abroad, especially for non-ferrous metal processing;

7.Hydraulic cutting——It is a new type, environmental protection and safe cutting method that uses abrasive as cutting medium and high-pressure hydraulic jets for basic cutting. It is applied to the cutting of petroleum (natural gas) pipelines, steel and other parts.

Brown Fused Alumina Micro Powder

Brown Fused Alumina is made of high-quality bauxite as the main raw material, and it is made into various particle size products by adopting processing methods such as purification, impurity removal, crystallization, sorting, crushing, magnetic separation, and sieving in the high temperature above 2200°C of the arc smelting furnace.

Brown Fused Alumina Powder is made of natural bauxite as raw material, carbon (mainly coke) as reducing agent, and iron scrap is added as settling agent (clarifier) ​​to form ferrosilicon at the bottom of electric furnace.



Brown Fused Alumina Micro Powder is tan, generally Al2O3 ≥ 94.5%, SiO2 ≤ 3.5%, TiO2 ≤ 3.5%, Fe2O3 ≤ 1%. The mineral composition is dominated by α-Al2O3. The central part of the crystal shape is diamond-shaped, thick plate-shaped, and cracked particles. There are more silicon oxide and calcium oxide in the periphery and melt crystallize, showing a long plate shape and the most coarse grains. Slit platelets.

Since the impurities have not been completely removed, the brown fused alumina also contains secondary phases such as calcium hexaaluminate, calcium plagioclase, spinel, rutile, and glass phases, ferroalloys, and solid solutions. The color of Brown Fused Alumina depends to a large extent on the titanium oxide remaining in the product.

Brown Fused Alumina Micro Powder performance include High hardness, high strength, impact resistance, high temperature resistance, oxidation resistance, corrosion resistance, low creep, etc.

Brown Fused Alumina is mainly used as abrasive. In recent years, it has been used as the raw material for large and medium-sized blast furnace cast iron hook castables and cast iron aggregates and for the production of common corundum bricks (including high-alumina silicon carbide casts).

Brown Fused Alumina Micro Powder is suitable for making bonded and coated abrasive tools, wet or dry blasting, superprecision grinding and polishing, making high quality refractory materials, grinding carbon steel, alloy steel, malleable cast iron, hard bronze and semi-conductor materials.

Brown Fused Alumina Melt Film Precision Casting Sand

Brown fused alumina melt film precision casting sand is the latest corundum products self-developed by Yushi Company to meet the market demands. Based on the production of the brown fused alumina and with special technology, Brown fused alumina melt film precision casting sand is produced by the careful organization of the researchers.

The quality of Brown fused alumina melt film precision casting sand has reached the advanced level of similar foreign products through laboratory tests and production in practice of dozens of casting enterprises. And some performances of Brown fused alumina melt film precision casting sand can be adjusted or showcased according to the customers' requirement.

The Brown fused alumina melt film precision casting sand has high refractoriness, low thermal expansion coefficient, good thermal stability, strong air permeability and high intensity, easy to shell, high casting finish. It can substitute Zirconia sand (powder) its price is only half of zirconia sand (powder), and the recovery ratio is high as well.

Brown fused alumina melt film precision casting sand can be mainly applied to the melt films and silicasol technology of jewelry, handicrafts, stainless steel products, watches, glasses, aluminum die casting industries, and can be processed in line with the demands of the clients.

Brown Fused Aluminum - The best Brown Fused Aluminum Oxide Abrasives from China YuShi

Brown fused Alumina is mainly used as a recyclable abrasive in blast cabinets and blast rooms. Because of Brown fused Alumina low iron content, alumina is often used in blasting operations where iron contamination on the non-ferrous metal substrate is not allowed.

Aluminium oxide is a very hard and sharp abrasive that cleans rapidly. It leaves an anchor profile prior to coating and is suitable for removal of scale, rust and old coatings. Furthermore it is used for ceramic grinding wheels, refractory applications and polishing and grinding.



Brown fused alumina is produced from bauxite, charcoal, iron chip by being fused under high temperature in an electric arc furnace. It is characterized by high toughness and has a micro hardness of 2000-2200kg/mm2. The Abrasive tools made by brown fused alumina are suitable for grinding carbon steel, normal alloy steel, malleable cast iron and hard bronze, etc. Brown fused alumina can also be used for making fine quality refractory etc.

Brown Fused Alumina is a tough, sharp abrasives which is highly suitable for grinding metals of high tensile strength. Brown fused Alumina thermal properties make it an excellent material for use in the manufacture of refractory products. This material is also used in other applications like blasting and surface hardening.