Non-ferrous metallurgy flue gas waste heat utilization device

The invention relates to the technical field of flue gas waste heat utilization, and discloses a non-ferrous metallurgy flue gas waste heat utilization device which comprises a waste heat utilization box body and coiled pipes, the coiled pipes are installed in the waste heat utilization box body at equal intervals, and transverse grooves are formed in the top of the interior of the waste heat utilization box body at equal intervals; sliding boxes capable of horizontally moving in a reciprocating mode are installed in the transverse grooves, two cleaning steel wire brushes are rotationally connected to the bottoms of the sliding boxes, a first motor is installed on the upper portion of one end of the waste heat utilization box body, the output ends of the first motor are in transmission connection with the sliding boxes, and two scraping plates are installed at the bottom in the waste heat utilization box body; a collecting groove is formed in the middle of the bottom in the waste heat utilization box. The flu