Author 1:
Name & Surname: Shumskaya E. N.
Company: RIVS Science and Production Association (Saint-Petersburg, Russia)
Work Position: Principal Researcher
Scientific Degree: Candidate of Engineering Sciences
Contacts: e-mail: rivs@rivs.ru

Author 2:
Name & Surname: Poperechnikova O. Yu.
Company: RIVS Science and Production Association (Saint-Petersburg, Russia)
Work Position: Head of subdivision

Author 3:
Name & Surname: Tikhonov N. O.
Company: RIVS Science and Production Association (Saint-Petersburg, Russia)
Work Position: Head of subdivision

Korbalikhinsky deposit is one of the richest zinc-bearing ore occurrences in Europe. The В+С₁ categories complex ore reserves total 24.8 Mt with the average content, %: Cu 1.44; Pb 2.1; Zn 9.57. Korbalikhinsky ore is planned to be treated by Rubtsovsk processing plant. After modernization, the plant output will grow from 750 thou t to 1.5 Mt. Development of the dressing technology for Korbalikhinsky complex sulphide ore was based on research findings in the following areas:
- Optimized size of the milling product before rougher copper–lead flotation circuits;
- Use of attrition to dissociate simple and complex aggregations in copper–lead concentrate scavenging, zinc–pyrite and zinc flotation and mineral surface cleaning in the copper–lead concentrate selection circuit;
- Selective collecting agent for each flotation circuit;
- Cyanide-free technology for selection of copper–lead concentrate at its minimized use in copper–lead flotation circuits.
Developed after the technological and mineralogical research, the high effective dressing technology for Korbalikhinsky complex sulphide ore enables production of saleable lead, copper and zinc concentrates at the copper recovery of 74.36%, lead recovery of 80.33% and zinc recovery of 85.01%. The design procedures developed based on the laboratory research were accepted by the customer in June 2014. Currently RIVS-Proekt Ltd works out engineering documentation for modernization of Rubtsovsk processing plant.