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Saint Petersburg, Russia

Akopyan M.A.,Zangezur Copper Molybdenum Combine | Markaryan A.V.,Zangezur Copper Molybdenum Combine | Bezirganyan K.V.,Zangezur Copper Molybdenum Combine | Arustamyan M.A.,Science and Production Association | Arustamyan A.M.,Science and Production Association
Eurasian Mining | Year: 2013

In the recent years, Zangezur Copper Molybdenum Combine (Zangezur CMC) have been successfully realizing the construction projects and modernization of all production areas of the processing plant, by the increasing of output and its quality, and the decreasing of operating costs. Science and Production Association "RIVS" is the chief contractor of the construction and modernization of the processing plant. It also acts as the chief designer and equipment supplier, which realizes the supervision, balancing, commissioning, and organization of construction. The first construction stage of the processing plant had been realized since 2004 till 2010. The processing capacity increased from 8.2 to 13.5 mln. t of ore per year. Meanwhile, the technological concentration values of copper and molybdenum were improved. In 2011, there was signed a contract for the processing plant expansion with bringing its ore throughput to 20-25 mln. t. The contract covers all operations of the technological concentration chain. Due to this contract, the following operations are foreseen: • the introduction of the bulk copper-molybdenum flotation sections with the productivity of 8 mln. t of ore per year; • the modernization of cycles of the bulk, copper and molybdenum flotation, completed with the RIF flotation machines and the RIF condition tanks; • the construction of new thickener with 30 m diameter. Science and Production Association "RIVS" and Zangezur CMC realized the first project in CIS countries of the construction of ore preparation building, using the semiautogenous grinding mill SAG (10,34×4,6 m) with 406 m3 volume and the center discharge ball mill MShC(6,1×9,5 m) with 260 m 3 volume. Zangezur CMC constantly increases the technological values in the conditions of the considerable decreasing of the grade of mineral components in ore. This confirms the correctness of the chosen development strategy for enterprise, considering the choice of equipment and technology with the effective cooperation of the specialists from Zangezur CMC and Science and Production Association "RIVS". Source

Zimin A.V.,Science and Production Association | Nazarov Yu.P.,Science and Production Association | Yurlova N.A.,Science and Production Association
Eurasian Mining | Year: 2013

The increased requirements of the consumers to the quality of iron-containing concentrates predetermined the improvement of the flotation operational development of magnetite concentrates, obtained by the traditional magnetic technologies. The two-stage opposite cationic flotation technology with the suppression of iron minerals is the most optimal for this type of raw materials. There were developed the technological schemes and reagent regimes, which make it possible to obtain the flotation concentrates with 70-71% of iron, with the extraction of 95-97% of iron from the initial magnetic concentrate. The usage of toxic and environmentally dangerous reagents in flotation is the larger introduction constraint in the production of the flotation operational development. There was developed the water circulation technology with the unification of the following operations: • the flotation operational development tails; • the liquid phase from the filtration of the main concentrate; • the magnetic separation tails of the enterprise. Amine is the basic component of the reagents-collectors of rockformation minerals. As a result of mixing of the foregoing products, the amine concentration in the water phase decreases significantly. Practically, this concentration is much lower than the maximum allowable concentration for the reagents of this group. © Zimin A. V., Nazarov Yu. P., Yurlova N. A., 2013. Source

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