By adding soda ash or caustic soda to the feed stock, the surface of the pellets becomes sticky and coated with fines.
在进料中加入纯碱或烧碱，小球的表面就变粘并为细粉覆盖。
youdao
Increased life in caustic media through surface treatment.
增加生活苛性媒体通过表面处理。
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