THE POLE-LEACHING EXPERIMENT ON LEACHING TECHNIQUES FOR POLYHALITE

The pole-leaching experiment,based on the characteriic of the Polyhalite,gained better economic and technological index.The dynamic leaching experiment was also udied.Under the condtion of different granularity,concentration of leaching agent,infiltration velocity,infiltration route etc.,the experiment results show that Polyhalite ore could be leachability.It was obtained that the leaching rate increase with increasing lixiviants concentration,and increasing infiltration route,and decreasing particle size,the influence on the leaching rate is complicated.From the several moly guide line of measuring the leaching efficacy,the technology of the leachine Polyhalite using CaCl 2 is feasibility.