Corundum is a general term for a large class of corundum materials. Brown corundum , white corundum, black corundum, zirconium corundum, etc. can all be called corundum. Corundum (also known as silicon carbide) can be divided into natural corundum and artificial corundum, and silicon carbide has black corundum. There are two types of silicon carbide and green silicon carbide. Among them, black silicon carbide is made of quartz sand, petroleum coke and good silica as the main raw materials through high-temperature resistance furnace smelting. Is there any difference between emery and brown corundum? Brown corundum is made of industrial
aluminum Bauxite blocks are made from bauxite blocks, which are smelted at a temperature above 2000 degrees in an electric arc and then cooled. After crushing and shaping, magnetic separation to remove iron, and screening into various particle sizes, brown corundum is suitable for the manufacture of ceramics, resin-bonded abrasives and grinding. , Polishing, sandblasting, precision casting (corundum for precision casting), refractory materials.
Emery packaging and specifications: 25 and 50 kg woven bags, the particle size of emery products is produced according to the standard and can also be processed according to the particle size required by the user. The chemical composition of brown corundum with general particle size number F4-F320 varies depending on the particle size. The outstanding advantage is that the crystal size is small and impact-resistant. If it is processed by an autogenous mill, the broken particles are mostly spherical particles, and the surface is clean, so it is easy to combine with a binder. Commonly used particle sizes can be divided into: 80-120 mesh corundum, 40-60 mesh corundum, 0.5-1mm corundum, 1-2mm corundum, 2-4mm corundum, 4-8mm corundum, etc. (according to customer needs).
Uses of emery:
(1) It can be used as an abrasive to make abrasive tools (such as grinding wheels, oil stones, grinding heads, sand tiles, etc.).
(2) As metallurgical deoxidizer and high temperature resistant material.
(3) High-purity single crystals can be used to manufacture semiconductors and silicon carbide fibers.
Main application: Used for wire cutting of (12-inch monocrystalline silicon, polycrystalline silicon, potassium arsenide, quartz) crystals, solar photovoltaic industry, semiconductor industry, piezoelectric crystal industry engineering processing materials, abrasives processing. Brown corundum mainly has four major application fields: functional ceramics, refractory materials, abrasives, and metallurgical raw materials. It is mainly used to make grinding wheels, sandpaper, abrasive belts, oilstones, grinding blocks, grinding heads, abrasive pastes and iron parts in workpiece products. Grinding and polishing of copper and steel parts, etc.
To sum up, it can be seen that there is no difference between corundum and brown corundum. Consider that brown corundum is one of many types of corundum, so it is called brown corundum corundum, so its characteristics and uses can also represent the characteristics and uses of corundum.
