The color of white corundum is just like its name, white and translucent. In many cases, just by observing the color of white corundum, you can know whether the quality of white corundum is good or not. But many customers will find that sometimes it is inevitable to find black or blue particles in white corundum. So what are the reasons for these?
Analysis of the causes of black spots on white corundum
1. Black impurities, such as impurities that are not removed or intentionally mixed, may cause black spots on white corundum.
2. Rust, white corundum raw material itself has iron oxide, which may not be removed cleanly, but in the process of production, due to mechanical rust, accidentally mixed with rust will also lead to impure color of white corundum.
3. Insufficient smelting time can also be considered as immature smelting process, resulting in low purity of white corundum itself, high impurity content, and small black spots may appear in the color.
The pure and impure color of white corundum is one of the testing standards for the quality of white corundum, and the quality of white corundum is not up to standard, which will also have a great impact on the performance of white corundum, such as hardness and grinding force will be affected. And this requires manufacturers to have a strict requirement for themselves.
