此法包括粉碎、筛选和浮选等过程。为了成功地实现铜的浮选，用黄药和黑药作捕收剂，硫化钠作活化剂。
The method consists of grinding, screening and flotation etc. in order to carry out flotation of copper successfully, xanthate and aerofloat are used as collectors and sodium sulfide as activator.
氧化锌是橡胶硫黄硫化最常用的有效活化剂。
Zinc oxide is the most commonly used and an effective activator for sulphur vulcanization of rubber.
氧化锌是橡胶硫黄硫化最常用的有效活化剂。
Zinc oxide is the most commonly used and an effective activator for sulphur vulcanization of rubber.
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