发明名称 |
Method of removing carbon from fly ash |
摘要 |
An improved froth flotation method is provided for the removal and recovery of an ultra-fine constituent such as carbon from tailings such as fly ash. A flotation apparatus is utilized that preferably includes a slurry conditioning tank and a flotation cell. The method of the present invention comprises the improvement of utilizing a flotation reagent formulation comprising a mixture of fuel oil and petroleum sulfonate. The method broadly includes the steps of (1) producing a slurry, or solid suspension, of the material containing the constituent to be recovered by adding a preselected amount of water or other slurrying liquid; (2) adding the flotation reagent comprising a mixture of fuel oil and petroleum sulfonate to the slurry that renders the selected constituent hydrophobic; (3) aerating the conditioned slurry; (4) recovering the selected ultra-fine constituent from an upper portion of the flotation apparatus; and (5) withdrawing and recovering tailings from a lower portion of the flotation apparatus. |
申请公布号 |
US5456363(A) |
申请公布日期 |
1995.10.10 |
申请号 |
US19950383629 |
申请日期 |
1995.02.06 |
申请人 |
UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION |
发明人 |
GROPPO, JR., JOHN G.;BROOKS, STEVEN M. |
分类号 |
B03B9/04;B03D1/004;B03D1/012;B03D1/02;(IPC1-7):B03D1/02 |
主分类号 |
B03B9/04 |
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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