Advanced Gravity Concentrators For Improving Metallurgical Performance

The development of techniques for separating minerals based on differences in their specific gravities is reviewed and their present applications in process technology outlined. Special emphasis is placed on the development, in Australia, of new models of the spiral concentrator. The mechanics of separation of spiral separators are stated, including the effects of operating parameters, Some of the traditional areas of spiral application are described, together with examples of new applications such as treatment of fine alluvials and tailings, separation of liberated minerals at coarse sizes and fine coal recovery.