... . A 1 horsepower, variable speed DC/AC geared motor (drive adjustable from 0 to 150 RPM) drives ... silica, carbide, magnesite, quartzite, etc), ultra high purity quartz cleaning, graphite upgrading, manganese ore beneficiation, bauxite upgrading, diamond ... or magnesite, glass raw materials cleaning silica sand, quartz, feldspar, dolomite, etc.Technical ParametersSpecifications2-RGC752-RGC1002-RGC1202 ...