CF-16 is a black, friable, medium bulk density silicon ... crystal, and good purity, it is widely used in abrasive, refractory and ceramic industry.CF-16 is a black, friable, medium bulk ... resign bonded grinding wheels. As loose grains, it is widely used for pressure blasting, surface finish and other general industrial applications ... , 500, 600, 800, 1000, 1200. Black Silicon Carbide used for Ceramic