发明名称 |
Accelerating agents for accelerating hardening of cement |
摘要 |
An agent for accelerating hardening of cement for use in an underground mining installation employing concrete-like packs including run-of-mine coal. The agent comprises by weight one and a half parts triethanolamine, five parts sodium carbonate and one part potassium carbonate. Too rapid setting of quick setting cement is avoided by the agent because a slurry of cement in water is mixed with a slurry of agent and run-of-mine coal in bentonite in a mixer immediately before being added to a pack so that setting cement does not occur in pipes leading to the mixer.
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申请公布号 |
US4257814(A) |
申请公布日期 |
1981.03.24 |
申请号 |
US19790052142 |
申请日期 |
1979.06.26 |
申请人 |
COAL INDUSTRY (PATENTS) LIMITED |
发明人 |
KELLET, WILLIAM H.;MILLS, PETER S. |
分类号 |
C04B22/10;C04B24/12;C04B28/02;C04B40/06;E02D3/12;(IPC1-7):C04B7/02 |
主分类号 |
C04B22/10 |
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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