Method for recovering rhenium from high-sulfur high-arsenic unwieldiness lean rhenium slag

The invention discloses a method for recovering rhenium from high-sulfur high-arsenic unwieldiness lean rhenium slag, and belongs to the technical field of dissipated metal recovering. According to the method, the high-sulfur high-arsenic unwieldiness lean rhenium slag is subject to oxidizing roasting arsenic expelling and desulfuration, and therefore the rhenium in the high-sulfur high-arsenic unwieldiness lean rhenium slag is preliminarily enriched, and rich-rhenium slag is obtained; and then the rich-rhenium slag is subject to ordinary-pressure selective leaching, leaching slag serves as bismuth dross to be treated, leaching liquid is subject to extraction, separation and purification, and rich-rhenium liquid obtained after purification is subject to evaporation concentration and freezing crystallization to produce an ammonium rhenate product. The method is short in procedure, simple in process, high in rhenium recovering rate and low in running cost; the problems that when a traditional wet method leachin