METHOD OF EXTRACTING ANTIMONY AND LEAD Russian patent published in 2016 - IPC C22B13/00 C22B30/02 C22B3/12 C22B3/20 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy of nonferrous and noble metals, particularly, to a method of extracting stibium and lead. Method involves treatment of the initial raw material with the alkaline solution containing glycerine, and lead deposition by hydrosulphide solution. Then, separation and processing of lead sulphide is carried out. After lead sulphide separation, stibium is precipitated from the solutions by means of electrolysis at current density 500-700 A/m². Upon that, electrolyte depleted in stibium is returned for leaching of initial raw material. Method allows to obtain stibium of purity grade Su-3 within processing of raw materials containing stibium and lead, for example, industrial sludge, the rate of stibium deposition is 2-2.5 times higher.

EFFECT: production of stibium of purity grade Su-3.

1 cl, 1 tbl, 1 ex