发明名称 |
Wet-grinding gypsum with polycarboxylates |
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.
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申请公布号 |
US2009127360(A1) |
申请公布日期 |
2009.05.21 |
申请号 |
US20070985515 |
申请日期 |
2007.11.15 |
申请人 |
TRACY SHARON LOUISE;MCDONALD DAVID B;LIU QINGXIA |
发明人 |
TRACY SHARON LOUISE;MCDONALD DAVID B.;LIU QINGXIA |
分类号 |
B02C23/18;B02C17/00 |
主分类号 |
B02C23/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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