| Based on mineral liberation analyzer (MLA) along with multiple other methods，the process mineralogical study of the grinding grit of a nickel-copper sulfide mine was carried out. The results show that the sand is mainly composed of 30% metal minerals and 70% silicate gangue minerals, in which the contents of target elements，nickel, copper, cobalt, gold, silver, platinum and palladium， are 0.82%, 1.10%, 0.04%, 0.75 g/t, 10.50 g/t, 0.23 g/t and 0.13 g/t，respectively. The independent gold minerals are mainly alloy phases while independent platinum-palladium minerals include alloy phases，arsenide and bismuth telluride minerals. Although the particle size of gold and platinum palladium minerals is small, some have been liberated and most of the carrier minerals are metal sulfides. Silver occurs in the form of hessite mineral and is capsuled in metal sulfides. The grain size of the hessite mineral is small. |
