What’s the Requirement on Bauxite for Brown Corundum producing?
The producing of brown corundum has a high request on bauxite, most requested is the chemical content of Al2o3, Sio2, and some plants have the requirement on the density of bauxite.
First, the requirement of Al2o3 content should be min 85%.
Second, all the brown corundum plant request the Sio2 content of bauxite max 4%, most of the brown corundum plant keep Sio2 content from 2% to 3.4%.
Third, CaO+Mg content should keep from 0.6% to 0.8%. The less CaO+Mg content, the fewer impurities in Brown Corundum. Otherwise, Brown Corundum plant needs to adjust the production time to reduce impurities.