Why use chromium ore sand to product magnesia-chrome bricks?
Why use chromium ore sand to product magnesia-chrome bricks?The main raw materials for making magnesia-chrome bricks are sintered magnesia and chromite. The purity of magnesia raw materials should be as high as possible, and the requirements for the chemical composition of chromite are: Cr2O3: 30-45%, CaO: ≤1.0-1.5%.