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Saint Petersburg, Russia

Zangezur Copper-Molybdenum Integrated Works has successfully been implementing construction and upgrading of all process stages at the processing plant in recent years, expanding the marketable output, improving the qualitative-quantitative indexes of the products and reducing the maintenance costs. The prime contractor for the processing plant construction and upgrading at Zangezur CMIW is RIVS that also acts as the general designer and equipment supplier, exercises installation and start-up supervision, as well as construction arrangement. Stage I of the processing plant construction was accomplished in 2004-2010. The annual capacity of the plant was increased from 8 to 13.5 Mt, and the copper and molybdenum production data were improved at the same time. Stage II of the processing plant design, construction and upgrading covers the period from 2010 through 2014, with gaining annual capacity of 20-25 Mt. For the first time in the CIS countries, RIVS and Zangezur CMIW have jointly actualized the project of wet semiautogenous milling floor, involving mill SAG-10.34×4.6 with the cubic capacity of 406 m3 and ball mill MSHTS-6100×9500 with the cubic capacity of 260 m3, on the industrial infrastructure site of the integrated works. While operating, the processing plant continuously improves the production data although the content of useful components in ore reduces. This justifies the adequacy of the accepted development strategy in terms of the chosen technology and equipment, given the fruitful cooperation between Zangezur CMIW and RIVS. Source

Yurlova N.A.,RIVS Proekt LLC | Kaifadzhyan E.A.,Mendeleev Institute for Metrology | Shumskaya E.N.,RIVS Science and Production Association | Poperechnikova O.Yu.,RIVS Science and Production Association
Gornyi Zhurnal | Year: 2014

RIVS Science and Production Association carries out a wide range of work aimed at improvement of iron ore dressing technology and equipment. The scope of work embraces flotation of magnetite concentrates toward their quality refinement and production of superconcentrates, and development of efficient technology for oxidized ferruginous quartzite dressing. Concentration of hematite ore uses cation amine-containing surface active agents (AC SAA). It is required to control the remaining content of highly toxic and ecologically hazardous AC SAA. Concentration of flotation agents was measured using the spectrophotometric method (simple, inexpensive but less selective) and the selective method of gas-liquid partition chromatography based on certified procedures. The industrial environmental monitoring advises to use the selective methods to estimate concentration of flotation agents, including calculation of effluents treated to standard quality. The article shows that desorption of AC SAA can run in pulp slurry, which results in higher concentration of AC SAA in the recycling water. However, in the course of time, AC SAA undergo chemical transformation and their content in the recycling water and liquid phase of tailings reduces. The process of AC SAA decomposition intensifies under higher temperature. Source

Zimin A.V.,RIVS Science and Production Association | Kalinin E.P.,RIVS Science and Production Association | Kutlin B.A.,RIVS Proekt LLC
Eurasian Mining | Year: 2015

In 2011 Khaibulla processing plant phase I has been commissioned for processing copper and copper-zinc ore of Yubileiny deposit in the Republic of Bashkortostan under the project of construction of processing plant with an annual capacity of 3 Mt developed by the general designer - RIVS Science and Production Association, Saint-Petersburg. The processing plant consists of a coarse-crushing building with a ground-level covered storehouse; the main building with the areas for grinding, flotation and dewatering of concentrates; lime and chemical area; tailings storage with recycling water supply; and engineering and administration buildings. Ore grinding: two SAG mills MPSI-70×23 at stage I and two ball mills MSHCHTS-45×60 at stage II, close-cycled with hydrocyclones; flotation: flotation machines RIF-25 and RIF-8.5; filtration of concentrates: filter presses. The variant with SAG milling has been selected due to reduced cost as against the standard ore pretreatment technology. At the early operation stage, the processing plant has attained the design performance. Some issues connected with dewatering of concentrates required installation of additional filter press. Khaibulla processing plant has been constructed in accordance with the modern production standards. The design solutions within the Khaibulla processing plant project enable high performance and further improvement of the plant. The article gives a review of the design solutions accepted under the project of Khaibulla processing plant for copper-zinc ore flotation under technical regulations prepared by RIVS. The authors compare the flow charts of the standard ore pretreatment and semi-autogenous milling and the design solutions enabling attainment of the design performance data. © Zimin A. V., Kalinin E. P., Kutlin B. A., 2015. Source

Khramov A.N.,Transbaikal State University | Subbotin M.Yu.,Transbaikal State University | Khamianov V.P.,Malyshevsk Mine Group | Kutlin B.A.,RIVS Proekt LLC
Gornyi Zhurnal | Year: 2014

Thermal drying of floatation concentrates is obligatory and very power-intensive operation in the technological scheme of enrichment of ores. Decrease in energy consumption and increase of efficiency of drying in drum dryers is possible by studying and the accounting of physicomechanical properties of a concrete floatation concentrate in the time of optimization of convective heat exchange between the thermal agent and a dried-up material due to improvement of internal devices of the dryer (nozzle). Purpose of a nozzle consists in disclosure of a surface of particles for heat exchange by material hashing, and its distribution on drum section. The management of JSC MRU had practical interest to the conclusions presented in the report, in particular modernizations of the drum dryer. The intensification of convective heat exchange in the course of drying of concentrates is reached by selection of a certain design of internal devices of drum dryers according to change of a corner of a natural slope of a floatation concentrate in process of its movement on a drum for the purpose of creation of more dense and uniform veil on a way of movement of the drying agent. The approved profile bladed nozzle of the drum dryer with two shovels on each blade is result of researches of authors of article. Introduction of this design allows to increase significantly productivity of the dryer and to cut fuel consumption. Realization of actions for modernization of drum dryers at concentrating factories, and also their production at manufacturers became today possible since there is a technical base, there is an algorithm and experience of carrying out researches. We wait for offers for cooperation from potential partners and clients. Source

Putenikhin G.A.,Bashmed LLC | Badretdinov R.R.,Bashmed LLC | Zimin A.V.,RIVS Science and Production Association | Kalinin E.P.,RIVS Science and Production Association | Kutlin B.A.,RIVS Proekt LLC
Gornyi Zhurnal | Year: 2014

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. Source

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