发明授权
- 专利标题： Method for increased mine recovery and upgrading of lignite
- 专利标题（中）： 增加矿山恢复和褐煤升级的方法
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申请号： US674382申请日： 1984-11-23
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公开(公告)号： US4619669A公开(公告)日： 1986-10-28
- 发明人: Elvis E. Jones , Terry A. Pearce , Dacon C. Laird, III , James H. Everitt
- 申请人： Elvis E. Jones , Terry A. Pearce , Dacon C. Laird, III , James H. Everitt
- 申请人地址： MI Midland
- 专利权人： The Dow Chemical Company
- 当前专利权人： The Dow Chemical Company
- 当前专利权人地址： MI Midland
- 主分类号： B03B9/00
- IPC分类号： B03B9/00 ; C10L9/00 ; B03B5/60
摘要：
A method is disclosed for upgrading run-of-the-mine (ROM) lignites to remove the gangue (clays, rock etc.) which form ash when the lignite is burned. The unique features of the process, a combination of unit operations in a specified sequence, result in less loss of combustible fuel value without hydrodegradation (the production of a large volume of fines) normally associated with contact of the lignite with water as in pipeline transport of lignite.
公开/授权文献
- US5889872A Capacitive microphone and method therefor 公开/授权日：1999-03-30