发明授权
US4904373A Fossil resin flotation from coal by selective coagulation and depression
of coal
失效
煤的化石树脂浮选通过选择性凝结和抑制煤
- 专利标题： Fossil resin flotation from coal by selective coagulation and depression of coal
- 专利标题（中）： 煤的化石树脂浮选通过选择性凝结和抑制煤
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申请号： US333606申请日： 1989-04-04
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公开(公告)号： US4904373A公开(公告)日： 1990-02-27
- 发明人: Jan D. Miller , Qiang Yu , Ye Yi
- 申请人： Jan D. Miller , Qiang Yu , Ye Yi
- 申请人地址： UT Salt Lake City
- 专利权人： University of Utah
- 当前专利权人： University of Utah
- 当前专利权人地址： UT Salt Lake City
- 主分类号： B03D1/02
- IPC分类号： B03D1/02 ; B03D1/04
摘要：
disclosed is a process for separating resin from a mixture of resin-bearing coal particles by increasing the pH of a froth flotation process to a value of at least 12. Particles of reduced size resin-bearing coal are preferably mixed with water to from a slurry. The pH of the slurry is then adjusted with a chemical agent to about 12. The slurry is then subjected to froth flotation. The coal particles aggregate to one another allowing the remaining resin-rich particles to attach to the bubbles formed during the flotation process. A much improved separation efficiency for resin flotation from coal is observed.