Author 1:
Name & Surname: Putenikhin G. A.
Company: Bashmed LLC (Sibay, Russia)
Work Position: Head of Concentration

Author 2:
Name & Surname: Badretdinov R. R.
Company: Bashmed LLC (Sibay, Russia)
Work Position: Chief Engineer of Concentration

Author 3:
Name & Surname: Zimin A. V.
Company: RIVS Science and Production Association (Saint-Petersburg, Russia)
Work Position: General Director
Scientific Degree: Candidate of Engineering Sciences
Contacts: e-mail: rivs@rivs.ru

Author 4:
Name & Surname: Kalinin E. P.
Company: RIVS Science and Production Association (Saint-Petersburg, Russia)
Work Position: Director, Ural Representative Office
Contacts: e-mail: ufa@rivs.ru

Author 5:
Name & Surname: Kutlin B. A.
Company: RIVS-Proekt LLC (Saint-Petersburg, Russia)
Work Position: General Director
Scientific Degree: Doctor of Engineering Science
Contacts: e-mail: rivs@rivs.ru

In 2011 Khaibulla processing plant stage I was commissioned at Yubileynoe copper and copper–zinc ore deposit (Republic of Bashkortostan). The feasibility study and construction project for the processing plant with the annual capacity of 3 Mt were developed by RIVS-Proekt LLC, the general designer of RIVS Science and Production Association (Saint-Petersburg). The structure of the processing plant includes the coarse crushing building with a covered ground-level storehouse; main building with areas for milling, flotation, concentrate dewatering; lime-reagent area; tailings dump with a recycling water system; and the engineering and administration buildings. Ore milling stage I: two wet semiautogenous mills MPSI-70×23, stage II: two ball mills MSHTS-4500×6000 with closed-circuit operation with cyclones; flotation: flotation machines RIF 25 and RIF 8.5; concentrate filtering: press filters. The choice of the ore pre-processing by semiautogenous milling is based on the lower costs as compared with the conventional ore pre-processing method, first of all, the substantially lower cost of construction–assembly work (by 18 %) and the less maintenance cost though the high cost of equipment. As early as the initial operation period, the processing plant reached the design parameters of ore pre-processing and flotation. Some problems arisen in concentrate dewatering demanded for installation of an additional press filter. Khaibulla processing plant has been constructed in accordance with the modern production requirements. The project designs involved in the Khaibulla processing plant project ensure high production data and further development.