“Ural Mining and Metallurgical Company — Holding” LLC, Verkhnyaya Pyshma:

A. M. Panshin, Technical Director

Institute of Materials Sciences and Metallurgy (Ural Federal University named after the First President of Russia B. N. Yeltsin), Ekaterinburg, Russia:

V. A. Maltsev, Director

M. G. Viduetskiy, Counselor of Director, Head of Education-Science Information Center

A. P. Purgin, Chief Specialist

I. F. Garifulin, Chief Specialist, e-mail: igor.garifulin@mail.ru

Design of ejecting units of columnar flotation machines CFM (КФМ) provides the process of intensive mixing of pulp by finest pressure gas bubbles, which makes it possible to do the following operations:
— efficient depressing of pyrrhotite and flotation varieties of pyrite during the concentration of copper-zinc ores and copper ores;
— acceleration of the process of dissolution of sulphate forms of zinc during the flotation of zinc cakes.
During the concentration of complex pyrrhotite-containing copper-zinc ore, the industrial machines CFM-1400M (КФМ-1400М) operated as high-efficient flotation apparatuses, which simultaneously accelerate the flotation of copper and zinc minerals, and depress the pyrrhotite. For the two-year period of CFM exploitation, there was a success in increasing of copper extraction from ore (by 3.4%), and zinc extraction from ore (by 5.5%) with simultaneous increasing of quality of copper concentrate (by 3% of Cu) and zinc concentrate (by 1.5% of Zn). Introduction of CFM-1400M made it possible to remove 12 chambers of mechanical flotation machines from exploitation (the total space of chambers is 30 m³, and the total power is 120 kW/hour). During the concentration of complex pyritic copper ore, the introduction of flotation machines CFM-1400M (due to suppression of flotation-active varieties of pyrite and decreasing of circulating loads) provided the increasing of total extraction of copper by 1.5% and increasing of copper content in the concentrate by 1%. According to results of pilot testings of zinc cakes’ flotation on the pilot apparatus of CFM-180 (in comparison with mechanic flotation machines), there were obtained the higher concentration indices with higher specific capacity of initial feed (by 4 times) and foam product (by 3 times). Results of testings make it possible to recommend the industrial machines CFM during the processing of zinc cakes. At the same time, technical and economic indices of zinc cake processing are increased due to decreasing of flotation costs and further Waelz process costs.

Authors express their sincere gratitude to the participants in this work: D. L. Tropnikov (Executive Officer of “Svyatogor” JSC); A. A. Bondarev (Chief Dresser of “Svyatogor” JSC); V. M. Sokolov (Councilor of Executive Officer of “Svyatogor” JSC); P. A. Kozlov (Head of Engineering Center of “Chelyabinsk Zinc Plant” JSC).

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