Chemical phase analysis method for nickel and cobalt in copper-nickel mine with associated cobalt

The invention discloses a chemical phase analysis method for nickel and cobalt in a copper-nickel mine with associated cobalt. The method comprises the following steps of 1, adding water into test specimens to be uniformly mixed, then, separating the test specimens by a magnet, and obtaining magnetic minerals and nonmagnetic minerals; 2, performing magnetic sulfide phase and magnetic non-sulfide phase separation and determination; 3, performing sulfate phase separation and determination; 4, performing nonmagnetic sulfide phase separation and determination; 5, performing cobalt nickel oxide phase and soluble gangue phase separation and determination; 6, performing undissolved gangue phase decomposition and determination. The method provided by the invention is a method built for simultaneously determining nickel and smaltite chemical phase analysis by synthetically considering the same mineral combination and the solubility property of the nickel and smaltite; the operation is simple; the application range is wide; the method is applicable to both primary ores and oxide ores.