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
Abrasives black fused aluminium oxide Black fused alumina, also called black fused aluminium oxide, black aluminum oxide, is a black color artificial corundum for abrasives. It's made of fusion of bauxite and reducing agent in electric arc furnace. Black fused aluminium oxide has certain content of ferro oxide and silicon oxide, which make it looks black. Black fused aluminium oxde has moderate hardness, less heat during abrasives, good strength and can be used for sand blasting, polishing, grinding of stainless steel and other non-metal surfaces. It can also be used for production of grinding wheel and cutting wheels. Physical and chemical properties Size# Al2o3 Sio2 Fe2o3 Tio2 F24-f100 77.00min 11.0min 5.0min 1.5-3.5 F120-f220 75-81 9-12 4-6 2-3 True gravity: ?3.5 g /cm3 Bulk density: 1.65-1.95 kg / m3 Mosh hardness: 8 Color: black Melting point: 2050 celcius degree Sizes: f8-f220 Applications of black fused aluminium oxide Production of grinding wheel, cutting wheel and other abrasive tools Sand blasting and polishing on aluminium, stainless steel and other metal surfaces Grinding and polishing on non-metal surfaces like ceramic, plastic, glass, wood, laminate, bamboo etc. Rust removal, clean and polishing of mold, foundry parts, metal parts, semi-conductors etc. Surface treatment of electric devices, telecommunication equipments, ship and vessel parts, machinery etc. Eching, die cut of stone, ceramic, marble, glass, jewery Pre-coating process of electroplate, coating, teflon, welding materials etc.
Black silicon carbide for refractories Black silicon carbide(sic) we make has high hardness, low expansion rate, good chemical stability, good heat conductivity and is widely used in refractory bricks, unshaped refractories, special ceramic products, precision casting, foundry and metallurgical industry. Physical and chemical properties True gravity: ?3.15 g /cm3 Bulk density: 1.20-1.60 g / cm3 Mosh hardness: ?9 Color: black Melting point: 2700 celcius degree Sizes: 0-1mm, 1-3mm, 3-5mm, 5-8mm, 100mesh, 200mesh, 325mesh or according to request Applications of refractory grade black silicon carbide Various shaped and unshaped refractory produccts Used as semi-conductor antioxidant Used as deoxidizer in steel making industry to improve steel quality \production of electric heating element silicon carbon rod Inner coating on impeller of hydraulic turbine to improve its durability
Material: high carbon spring steel, spring steel, stainless steel, alloy steel Compression Spring, Extension Spring : Wire Diameter: 0.2-40.0mm Torsion spring wire diameter :0.2-35mm Surface Finish: black , Zinc, Nickel, silver, golden, tin, powder coating, shot pin Applications: Automotive, medical device, agricultural machinery ,electronics, toy, electric power distribution. Extension spring hook include Germany hook, British hook, Side hook We can customize special design of springs based on your requirement.
We are glad to propose 500 MT of stain less steel mill scale. Mill scale is formed on the outer surfaces during by the hot rolling lamination of stainless-steel products. At a visual inspection the material is a hard brittle sand and is mainly composed of iron oxides, mostly ferric, and is bluish black in colour, but it also contains considerable alloying elements such as chromium and nickel. The recovery ratio after melting in furnace for the most valuable alloy elements is: - Ni: 3.5 - 4.5% - Cr: 6-8% From the chemical and physical analysis performed on the scrap, and according to the European environmental rules, the material has been classified as a special non dangerous waste, listed in green list. In particular the mill scale can be classified as follows: Waste code: 10 02 10 The material is stored on cemented flooring, and it can be loaded loose in tipper trucks or containers. Chemical analysis of the material is available on request.
Mill scale, is formed on the outer surfaces of plates, sheets or profiles when they are being produced by rolling hot iron or steel billets in rolling or steel mills. It looks like a hard brittle sand and is mainly composed of iron oxides, mostly ferric, and is bluish black in color. Being produced during the reheating, conditioning and hot rolling operation for the production of steel articles, the mill scale initially adheres to the steel surface and protects it from atmospheric corrosion, provided no break occurs in this coating. From the chemical and physical analysis performed on the scrap, and according to the european environmental rules, the material has been classified as a special non dangerous waste, listed in green list In particular the mill scale can be classified as follows: Einecs (european commission no.): 266-007-8 Waste code: 10 02 10 Basel code: b 12 30 Hs code: 2619.00
We are exporter of Calcined Alumina. According to different requirements, five series of products have been formed, including dry pressing, hot die casting, refractory, casting and setting, structural ceramic granulator, etc. It can be widely used in electronic equipment, structural ceramics, refractories, wear-resistant materials, polishing materials and other industries.
We are supplier and exporter of Calcined Alumina. Calcined alumina can be used in the polishing of different alumina products(mainly used in middle, fine polishing).It is also widely used in high-class aluminium refractory material, unshaped refractory materials, high aluminium ceramic product and advanced coating, etc, . Item Al2o3 % Na2o % Sio2 % Fe2o3 % D50 A4m 99.8 0.1 0.05 0.02 3.1 Alumina (Al2O3), the industrial Al2O3 is prepared from alumina (Al2O3, 3H2O) and hard alumina, and the Al2O3, which is high in purity, is usually prepared by chemical methods. Al2O3 has many isomorphic crystals, and there are currently more than 10 known types, mainly three types of crystal, namely gamma-al2o3, beta-al2o3, alpha-al2o3.Which structure is different, with different properties in high temperature above 1300 s almost entirely into alpha Al2O3.
Commodity: Calcium carbide Molecular formula:CaC2 Molecule Weight: 64.10 H.S code:28491000 CAS: 75-20-7 UN NO.1402 HAZARD CLASS: 4.3 Application: It is a kind of basic material for organic synthesis, and can produce acetylene gas for cutting and welding, also be material for calcium cyanamide. Appearance: Grey, black solid, purple when its purity is more than 90%. Granule:4-25mm / 15-25mm / 25-50mm / 50-80mm /25-80/ 80-120mm Package: Net in 100kg or 50kg new iron drums with nitrogen. Specification: GB10665-2004 Specification Superfine Grade First Grade Second Grade Gas yield(L/kg)L/kg 305 295-305 285-295 PH3 content in acetylene (PH3%) 0.06 0.08 0.08 H2S content in acetylene (H2S%) 0.1 0.1 0.1 Loading weight in 1 x 20fcl:22.5mt
