... , such as the beneficiation of abrasive, refractory and ceramic raw material (i.e., alumina, silica, carbide, magnesite, ... beneficiation, bauxite upgrading, diamond ore beneficiation, selective separation of garnet / ilmenite / rutile, zircon, beneficiation of iron ores, ... removal of iron silicates from limestone or magnesite, glass raw materials cleaning silica sand, quartz, feldspar, dolomite, etc ...