Sewage treatment tank for mine washing

The utility model discloses a mine washing sewage treatment tank, which relates to the technical field of ore processing and comprises a plurality of blow-off pipes which are annularly arranged above the open end of the treatment tank; the positioning sleeve is in a circular ring shape and is positioned in the treatment tank; one ends of the L-shaped connecting plates are fixedly connected with the outer side wall of the positioning sleeve, and the other ends of the L-shaped connecting plates are fixedly connected with the outer side wall of the treatment tank; the outlet end of the blow-off pipe directly faces a gap between the outer side wall of the positioning sleeve and the inner side wall of the treatment tank; the filter screen is in a circular truncated cone shape and is arranged on the outer circumferential wall of the positioning sleeve in a liftable sliding and sleeving manner; the sewage suction pipe penetrates through the positioning sleeve and is fixedly connected with the inner wall of the posit