发明名称 |
Process for beneficiating particulate solids |
摘要 |
The present invention provides a method for selecting magnetite to form a dense media for beneficiation of fine particulate solids such that the particulate solids are as buoyant with respect to the dense media as if the solids were in a true liquid having a specific gravity equal to that of the dense media. The method involves determining a magnetite particle diameter such that the diameter ratio of particulate solid to magnetite lies above a diameter ratio partition curve. The invention is also directed toward using magnetite having a particle diameter less than about 0.005 mm and a mean particle diameter of about 0.0025 mm. Such magnetite is formed from a gas phase pyrohydrolysis reaction on an aqueous iron (ferrous) chloride solution. The present invention is further directed towards a method for determining the efficiency of separation of a dense media separation process. This method includes determining an apparent distance a particle must travel in a dense media cyclone to be correctly beneficiated. From this apparent distance, an apparent velocity a particle must achieve to be correctly beneficiated is calculated. This apparent velocity is used, along with cyclone geometry and operational parameters to calculate a divergence value which indicates the efficiency of separation. The present invention also includes a method for selecting cyclone geometry and operating parameters which includes determining separation efficiency and adjusting geometry and parameters in a manner to obtain improved efficiency.
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申请公布号 |
US5262962(A) |
申请公布日期 |
1993.11.16 |
申请号 |
US19910742903 |
申请日期 |
1991.08.09 |
申请人 |
GENESIS RESEARCH CORPORATION |
发明人 |
KINDIG, JAMES K. |
分类号 |
B03B5/30;B03B5/34;B03B5/44;B03B9/00;B03B13/00;(IPC1-7):G06F15/46;B03D3/00 |
主分类号 |
B03B5/30 |
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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