发明名称 |
ACCELERATORER FOR ACCELERERAD HERDNING AV 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. |
申请公布号 |
SE7805271(A) |
申请公布日期 |
1978.11.11 |
申请号 |
SE19780005271 |
申请日期 |
1978.05.09 |
申请人 |
* COAL INDUSTRY (PATENTS) LTD |
发明人 |
W H * KELLET;P S * MILLS |
分类号 |
C04B22/10;C04B24/12;C04B28/02;C04B40/06;E02D3/12;(IPC1-7):04B13/22 |
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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