The rhodium recovery process based on sulfide precipitation method was proposed for the waste rhodium-containing organic solution. The influence of reaction temperature, time, and pH of the solution on the rhodium precipitation rate was studied. The optimum reaction parameters were obtained. The test results show that under the condition of reaction temperature 80℃, reaction time 6 h, reaction initial pH value 6~7, end point pH value less than 9.5, saturated sodium sulfide solution dosage 20 times the theoretical amount and stirring speed 300 r/min, the yield of rhodium is more than 80%. |