The optimum conditions for removing chloride were as follows:the amount of bismuth oxychloride and Na_2CO_3 were 3.

• 氯氧化铋经碳酸钠溶液二次脱氯转型后得到氧化铋前驱体碳酸氧铋,将其烘干,进行热解,即得氧化铋产品。