Process method for treating thiram sodium cobalt slag

The invention discloses a process method for treating thiram sodium cobalt slag. The method comprises the following steps that (1) acid washing and zinc removing are carried out; (2) roasting is carried out; (3) water leaching is carried out; (4) extracting and purifying are carried out; (5), ammonium oxalate precipitating is carried out, and (6) cobalt oxalate calcining is carried out, wherein the roasting process comprises the steps that 10 wt%-30 wt% of sodium persulfate is added into acid washed slag obtained by acid washing and zinc removing, and then the mixture is heated for secondary roasting after being subjected to primary roasting. The method has the beneficial effects that most of zinc can be recycled by low-pressure acid washing in the acid washing process, high-temperature pressurizing leaching and other strengthening means are not needed, so that the equipment investment and the production cost are reduced; and sodium sulfate is used as a roasting additive, so oxygen generated during decomposin