Institute of Comprehensive Exploitation of Mineral Resources of Russian Academy of Sciences (Moscow, Russia):

Krasnov G. D., Chief Researcher, Professor, Doctor of Engineering Sciences, e-mail: hely28@mail.ru
Chikhladze V. V., Senior Researcher, Candidate of Chemical Sciences

“Mekhanobr Engineering” Company (St. Petersburg, Russia):

Bogdanovich A. V., Director of Scientific and Research Work, Professor, Doctor of Engineering Sciences
Kuzmin I. V., Engineer

Two samples of a gold-cooper-molybdenic ore of a Northern Nurkazgan deposit and cooper-porphyritic ore of a Kalmakyr deposit were the basis for carrying out the comparison of crushing results in a high pressure grinding rolls (roller-press) and on the press testing machine. Complex researches established that in terms of grain-size categories, maintenance and selectivity of distribution of Fe, Cu and Zn om the grain-size classes, these disintegration methods give the close results. Likeness of technological signs of products, which were crushed in a roller-press and on a press machine is proven by mineralogical researches. As a result, there have not been installed the essential differences between materials of parallel crushing. It concerns the fracturing; both ore and rock grains; preferential formation of flaws on a surface of minerals intergrowth; increasing of a part of free grains of sulphides in fine classes. Owing to the above, it can be considered, that the simulation of roller-crushing with the help of the press machine is possible and objective.

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2. Bulled D., Husain K., Lozano C. A Small-Scale Test to Determine a Work Index for High Pressure Grinding Rolls : Materials of the V International Mineral Processing Seminar “Procemin-2008”. Santiago, 2008.
3. Vaskov D. S., Fedotov P. K. Modelirovanie protsessa mezhchastichnogo izmelcheniya v porshnevom presse : Mater. Mezhdunar. Soveshchaniya “Plaksinskie chteniya-2008”, 16–21 sentyabrya 2008 (Modeling of process of interpartial crushing in a piston press : Materials of the International Meeting “Plaksin readings-2008”, September, 16–21, 2008). Vladivostok, 2008, pp. 80–83.
4. Krasnov G. D., Podgaetskiy A. V., Chikhladze V. V. GIAB — Mining Information and Analytical Bulletin, 2009, Vol. 14, No. 12, pp. 89–102.
5. Krasnov G. D., Chikhladze V. V. Osobennosti razrusheniya mineralov, izmelchennykh razlichnymi metodami : mater. 2-go mezhdunar. nauch.-praktich. seminara «Problemy dezintegratsii mineralnogo i tekhnogennogo syrya v gornoy promyshlennosti i stroitelnoy industrii», 4–8 dekabrya 2009 (Features of destruction of the minerals crushed by various methods: materials of the 2nd international scientific and practical seminar «Problems of disintegration of mineral and technogenic raw materials in mining industry and the construction industry», December, 4–8, 2009). Stavropol, 2009, pp. 12–23.
6. Krasnov G. D., Shekhirev D. V., Chikhladze V. V. Obogashchenie rud — Mineral Processing, 2011, No. 4, pp. 3–7.
7. Krasnov G. D., Rakaev A. I., Shekhirev D. V., Chikhladze V. V. Tsvetnye Metally — Non-Ferrous Metals, 2011, No. 6, pp. 11–15.