Corundum content of impurities on the properties of

Corundum abrasives in one of many, was able to buy the product is very good, as long as it is attributed to good performance of the product, so that customers are able to favor such a product, but sometimes also corundum There will be miserable impurities, thus affecting its performance.
There are two ways of making corundum, most notably through the method of production of fused corundum, the production process is such high quality bauxite, no trouble coal, iron as the main raw material, through the use of electric arc furnaces in 2200 ℃ above high temperature purification, cleaning, crystallization, sorting, crushing, magnetic separation, screening and other means of processing into various particle size of the product.
The role of corundum quality will affect its effect, how to judge the quality of corundum or bad yet. Corundum in the production process may contain impurities, the main impurities are SiO2, Fe2O3, TiO2, fewer impurities, the higher the quality corundum. Determine the content of impurities in corundum corundum be judged good or bad a way. Besides the content of Al2O3 corundum is also directly explain how good or bad the quality corundum.
Recent years due to rising prices, electricity prices increase the production of corundum increasing pressure, fierce competition in the market there are so many unscrupulous businessmen led to the production of corundum quality is getting worse. Corundum as a wear-resistant materials in recent years, product quality often unstable, chalking, cracking phenomenon of frequent occurrence. So in the purchase process corundum determine its quality is very important.
Corundum can be used as refractory if containing impurities will affect its fire-resistant properties. Some refractories fusible material impurities, and some have a very high melting point in itself, but coexist with the main component, they can produce a fusible material. Therefore, the presence of impurities is often the main ingredient from strong fluxing action. Fluxing action, although the material is liquid phase sintering help, but there is material to resist high temperature serious harm.