发明名称 |
Processing additive for high-pressure roll press process of forming finish grind cement |
摘要 |
An improved high-pressure roll press process for forming finish ground cement is disclosed and is achieved by treating the material entering the roll press with a small amount of a hydroxyl or alkoxyl compound selected from lignin, phenol or monopropylene glycol or mixtures thereof.
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申请公布号 |
US5203512(A) |
申请公布日期 |
1993.04.20 |
申请号 |
US19920832512 |
申请日期 |
1992.02.07 |
申请人 |
W. R. GRACE & CO.-CONN. |
发明人 |
FERRARIS, CHIARA F.;GARTNER, ELLIS M.;MYERS, DAVID F. |
分类号 |
B02C23/06;C04B7/42 |
主分类号 |
B02C23/06 |
代理机构 |
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地址 |
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