COMPLEX PROCESSING METHOD OF AGED TAILS OF BENEFICATION OF TUNGSTEN-CONTAINING ORES Russian patent published in 2010 - IPC C22B3/22 C22B34/36 

FIELD: metallurgy.

SUBSTANCE: method involves screw separation so that collective product and secondary true tailings are obtained. Then collective product is separated with magnetic separation into gold-containing sulphide product and tungsten product, which is subject to finishing on concentration tables so that rough tungsten concentrate, tungsten middlings and secondary true tailings are obtained. Rough tungsten concentrate is subject to floating so that high-grade conditioned tungsten concentrate and foam product containing tungsten and gold-containing sulphide product is obtained. Then foam product together with tungsten middlings is separated into fine and coarse fractions. Coarse fraction is crushed in closed cycle with separation, and gold-containing sulphide product is removed from fine fraction by means of floatation so that low-grade tungsten concentrate is obtained.

EFFECT: increasing processing depth, decreasing load on further benefication operations, reducing capital costs and operating costs.

2 cl, 1 dwg, 1 tbl