发明名称 |
Method for high speed dewatering of slurries |
摘要 |
A system and method for dewatering a continuous stream of slurry at high flow rates demonstrates enhanced efficiency, economy and ease of operation. A stream of slurry is subject to continuous or continual measurement of flow rate and pulp density and the measurements are used to control the rate of addition of a flocculating agent to the slurry. The flocculated slurry is delivered to a dewatering unit where it is passed through a diffuser and evenly delivered to a tracking screen for filtering solids from a liquid filtrate. The pulp density of the filtrate may also be measured and used to control addition of a flocculating agent. The tracking screen is adjusted to achieve an angle of repose suited to the particular composition of the filter cake. The diffuser has a base having a horizontal section aspect ratio of from about 1:1 to about 4:1 and continuously changing vertically into an upper portion having a horizontal section with an aspect ratio of from about 40:1 to about 100:1. The ratio of the horizontal sectional areas at the upper portion with respect to the base is from about 1:1 to about 3:1. The dewatering unit of the invention may be adjustably mounted on a transport means for deployment of the high speed dewatering system and method at any convenient location.
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申请公布号 |
US6652757(B2) |
申请公布日期 |
2003.11.25 |
申请号 |
US20010849649 |
申请日期 |
2001.05.04 |
申请人 |
BLACK & VEATCH HOLDING COMPANY |
发明人 |
HODGES MICHAEL K.;CAMPBELL LARRY D. |
分类号 |
B01D29/00;B01D21/00;B01D21/30;B01D37/03;C02F1/52;C02F11/12;C02F11/14;(IPC1-7):C02F1/52 |
主分类号 |
B01D29/00 |
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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