For lead-zinc mixed concentrate, some ores are difficult to separate single lead and single zinc concentrate, and only mixed lead-zinc concentrate can be selected, such as Shaoguan smelter (Fankou lead-zinc mine is used for mixed concentrate); ② lead antimony mixed concentrate, whose mineral composition is brittle antimony lead mine and antimony lead mine, produced by Guangxi Dachang Mining Bureau; ③ lead tin mixed concentrate, produced by Gejiu, Yunnan Province. The industrial requirements for the above mixed concentrate have not been uniformly stipulated by the state, and each enterprise has its own quality requirements and pricing standards.

铅锌和某些多金属矿伴生在一起，其矿石目前选矿技术尚难分选出单一品种的精矿，选厂只能生产混合精矿产品。