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The leaching behavior of metals from a pressure-leaching slag was investigated using a desulphurization-leaching-hydrolysis process for the recovery of bismuth and antimony.Various parameters were studied,including the amount of acid added,temperature,time,addition of NaCl and solid-liquid ratio in the leaching process.The experimental results show that the contents of bismuth and antimony are mostly enriched in the process of kerosene desulphurization.More than 98% Sb and 96% Bi are extracted under the determined conditions.In the process of hydrolysis,the precipitation rates of bismuth and antimony are 97.80% and 94.59%,respectively.Under the optimum experimental conditions,the recovery rate of bismuth and antimony can be up to 95.80% and 90.80%,respectively.
The leaching behavior of metals from a pressure-leaching slag was investigated using a desulphurization-leaching-hydrolysis process for the recovery of bismuth and antimony. Verious parameters were studied, including the amount of acid added, temperature, time, addition of NaCl and solid -liquid ratio in the leaching process. The experimental results show that the contents of bismuth and antimony are mostly enriched in the process of kerosene desulphurization. More than 98% Sb and 96% Bi are under determined conditions. In the process of hydrolysis , the precipitation rates of bismuth and antimony are 97.80% and 94.59%, respectively. Under the optimum experimental conditions, the recovery rate of bismuth and antimony can be up to 95.80% and 90.80%, respectively.