LIQUID GUIDING AND COLLECTION PROCESS WITH SECONDARY CHANNELS FOR IN SITU LEACHING

WIPO Patent Application WO/2012/016513

A1

An in situ leaching liquid collection process with secondary channels comprises:1) multiple liquid collection channels are provided in an ore body; 2) secondary channels are provided at both sides of the liquid collection channels, the main channel and secondary channels forming a multi-channel guiding and collecting control face for pregnant solution; 3) a sealing wall is arranged in the liquid collection channels, and the lower frontal part of the sealing wall is connected to the channel outlet by a conduit controlled by a ball valve at the outlet; 4) by alternately releasing and increasing pressure in the measurement and production process, a multi-channel pregnant solution collection system is formed at the liquid collection project control face; 5) by means of changing the loss ratio of non-mineral liquid and pregnant solution, the rare earth recycling rate is improved. The process favors the recycling of rare earth pregnant solution, and can reduce environment pollution.

TAN YAOFENG (CN)
LIU YAN (CN)
DENG GUOQING (CN)
HE XIAOLIN (CN)

PCT/CN2011/077907

February 09, 2012

August 02, 2011

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JIANGXI RARE EARTH & RARE METALS TUNGSTEN GROUP HOLDING CO LTD (CN)
TAN YAOFENG (CN)
LIU YAN (CN)
DENG GUOQING (CN)
HE XIAOLIN (CN)

E21B43/00; C22B3/04; C22B59/00; E21C41/26

CN101906536A	2010-12-08
CN201802377U	2011-04-20
CN1401797A	2003-03-12
CN1043768A	1990-07-11
EP1375456A2	2004-01-02
US5518299A	1996-05-21
US6893570B1	2005-05-17

None

BEIJING WANG IP AGENCY, LTD. (CN)
北京王景林知识产权代理事务所 (CN)

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