Liquid guiding and collection process with secondary channels for in situ leaching

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(57) Abstract : An in situ leaching liquid collection process with secondary channels comprises : l) 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 con- ) ...f4---. duit 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 4° : . 3 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. 11 IIIII IIIIIIII II IIIIII IIIII IIIII IIIII IIII II III IIIII IIIII IIIII IIIII IIIII IIII IIIIIII IIII IIII IIII KG, KM, KN, BY, KG, MD, RU, (AL, AT, BE, LT, LU, MA, MD, ME, MG, MN, MW, ES, FI, FR, GB, GR, NI, NO, NZ, OM, PE, PG, PH, IS, IT, LT, LU, RU, SC, SM, ST, SE, SI, CM, GA, ML, MR, NE, SN, LS, MW, OBJECT 21