A ball mill is a type of grinder used to grind materials into extremely fine powder like ores, chemicals, ceramic raw materials and paints. Ball mills are a cylindrical device used in grinding (or mixing) materials. Hitech Technologies. Banashankari, Bengaluru No. 49, 7th A Cross, Hanumagiri Nagar Chikkalasandra, Banashankari, Bengaluru 560061, Dist. Bengaluru, .