发明名称 |
Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution |
摘要 |
A single dose of additive contributes to three consecutive fine coal unit operations, i.e., flotation, dewatering and reconstitution, whereby the fine coal is first combined with water in a predetermined proportion so as to formulate a slurry. The slurry is then mixed with a heavy hydrocarbon-based emulsion in a second predetermined proportion and at a first predetermined mixing speed and for a predetermined period of time. The conditioned slurry is then cleaned by a froth flotation method to form a clean coal froth and then the froth is dewatered by vacuum filtration or a centrifugation process to form reconstituted products that are dried to dust-less clumps prior to combustion.
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申请公布号 |
US5379902(A) |
申请公布日期 |
1995.01.10 |
申请号 |
US19930149270 |
申请日期 |
1993.11.09 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES DEPARTMENT OF ENERGY |
发明人 |
WEN, WU-WEY;GRAY, MCMAHAN L.;CHAMPAGNE, KENNETH J. |
分类号 |
B03B9/00;B03D1/02;C10L5/06;C10L9/00;(IPC1-7):B03D1/02;B03B1/04;B03D1/006 |
主分类号 |
B03B9/00 |
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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