发明名称 |
Magnesium hydroxide recovery |
摘要 |
A method for the separation of magnesium hydroxide from a mixture of particulate magnesium hydroxide and dissolved sodium sulphate in water and for the washing and thickening of the magnesium hydroxide, includes the steps of pumping the mixture from a holding tank 14 through an ultrafiltration module comprising two banks 16, 18 of tubular membranes to which is applied a back pressure so that the dissolved sodium sulphate passes through the membrane pores positioned substantially at right angles to the direction of flow as a permeate; adding water to the holding tank 14 at a rate substantially equal to the permeate flow rate until the sulphate concentration in the magnesium hydroxide is less than a desired level; and then discontinuing the water addition thus allowing the magnesium hydroxide to thicken until a desired viscosity is reached.
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申请公布号 |
US5385671(A) |
申请公布日期 |
1995.01.31 |
申请号 |
US19930145901 |
申请日期 |
1993.10.29 |
申请人 |
ADCOCK INGRAM SELF MEDICATION (PROPRIETARY) LIMITED |
发明人 |
TALBOT, MARIE M. B.;TALBOT, MARIE M. J.;URBANIAK-HEDLEY, FRANCIS D. |
分类号 |
B01D61/14;C01D5/16;C01F5/22;(IPC1-7):B01D6/168 |
主分类号 |
B01D61/14 |
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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