发明授权
- 专利标题: Multi-stage flotation column
- 专利标题(中): 多级浮选柱
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申请号: US763904申请日: 1996-12-11
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公开(公告)号: US5897772A公开(公告)日: 1999-04-27
- 发明人: Shiao-Hung Chiang , Daxin He , Fuxin Ding
- 申请人: Shiao-Hung Chiang , Daxin He , Fuxin Ding
- 专利权人: Chiang; Shiao-Hung,He; Daxin,Ding; Fuxin
- 当前专利权人: Chiang; Shiao-Hung,He; Daxin,Ding; Fuxin
- 主分类号: B01D17/00
- IPC分类号: B01D17/00 ; B01D17/035 ; B01D21/00 ; B01F3/04 ; B01F5/04 ; B01F5/06 ; B03D1/14 ; B03D1/24 ; B03D1/26 ; D21B1/32 ; D21F1/70 ; C02F1/24
摘要:
An apparatus and method are disclosed for environmental applications such as waste water treatment, de-inking of recycled paper, chemical/biochemical waste clean-up, and mineral beneficiation, using a multi-stage flotation column. A series of draft tubes arranged axially and separated by baffles provides individual mixing stages in the flotation column and a special gas distributor generates fine gas bubbles. The draft tubes create repetitive loop flow of the feed fluid in each flotation stage. This provides uniform distribution of the gas bubbles throughout the column and significantly enhances mixing and contacts of the gas bubbles with the impurities to be removed.