发明申请
- 专利标题： Wet-grinding gypsum with polycarboxylates
- 专利标题（中）： 用多羧酸盐湿法研磨石膏
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申请号： US11985515申请日： 2007-11-15
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公开(公告)号： US20090127360A1公开(公告)日： 2009-05-21
- 发明人: Sharon Louise Tracy , David B. McDonald , Qingxia Liu
- 申请人： Sharon Louise Tracy , David B. McDonald , Qingxia Liu
- 主分类号： B02C23/18
- IPC分类号： B02C23/18 ; B02C17/00
摘要：
The process of the present invention includes obtaining a feed material having an initial median particle size. A solution of a polycarboxylate dispersant in water is formed, then the feed material is added to the solution to form a slurry. The slurry is wet-ground to reduce the median particle size of the feed material. Optionally, the total amount of polycarboxylate dispersant is divided into a plurality of doses that are added periodically over the total grinding time.
公开/授权文献
- US07861955B2 Wet-grinding gypsum with polycarboxylates 公开/授权日：2011-01-04