发明名称 |
SRODEK PRZYSPIESZAJACY DO PRZYSPIESZENIA TWARDNIENIA CEMENTU ORAZ SPOSOB PRZYSPIESZENIA TWARDNIENIA CEMENTU |
摘要 |
<p>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.</p> |
申请公布号 |
PL206700(A1) |
申请公布日期 |
1979.02.12 |
申请号 |
PL19780206700 |
申请日期 |
1978.05.10 |
申请人 |
COAL INDUSTRY PATENTS LTD |
发明人 |
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分类号 |
C04B22/10;C04B24/12;C04B28/02;C04B40/06;E02D3/12;(IPC1-7):04B/ |
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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