In mineral beneficiation in a number of cases significant changes in the technological process occur as a result of the mutual influence of the minerals being separated. For example, in the practice of concentration plants processing rich polymetallic sulfide ores (Zolotushinskaya, Belousovskaya, Berezovskaya, etc.), the flotation activity of galena periodically decreases.

Zincate technology attracts the attention of researchers in the beneficiation of polymetallic ores. Using zincate, positive results have been obtained in the beneficiation of lead-zinc ores. However, sometimes experimenters fail to synthesize the reagent correctly, with all the resulting consequences. To avoid such cases, additional information on the synthesis and use of zincate is advisable.

For over 40 years, cyanide technology has been used in the practice of beneficiation of polymetallic ores by flotation. However, this technology often causes significant difficulties due to its lack of perfection, which, to some extent, hinders the progress of domestic industry in the field of non-ferrous metallurgy. The present paper is devoted to the issue of development and research of a new, more effective technology.