Ural State Mining University (Russia):

Kozin V. Z., Head of Chair, Doctor of Engineering Sciences, Professor, gmf.dek@ursmu.ru

The issues of metal product balance calculation at concentrating plants are considered. The following recommendations are developed. Product recovery may be calculated by two methods: through using component mass in concentrate and feed ore for calculations and through using component mass in concentrate and tailings for calculations. The main problem consists in coordination of indicators used in calculation, taking into account product accumulation in tanks and bins. If head sampling is unavailable, product recovery may be calculated on the basis of produced and accumulated masses of concentrates and tailings. Tailings in this case should include all products that are not related to concentrate under consideration. Product recovery is equal to sum of process recovery and relative imbalance. Product imbalance may be expediently divided into two parts: occasional and non-occasional. Since valuable component mass in concentrates is also determined with errors, for correction it is expedient to distribute occasional part of imbalance proportionately with each product contribution to component mass in product balance and relative errors in their mass fraction sampling. It is expedient to distribute non-occasional part of imbalance in accordance with positive and negative constituents of sampling imbalance errors with respect to ore and tailings, and also concentrate. It is not necessary to include products in circuit into imbalance distribution.

1. Alenitsyn Yu. Ye. Obogashchenie Rud, 1982, No. 1, pp. 24–28.
2. Kozin V. Z. Oprobovaniye mineralnogo syrya (Mineral raw materials sampling). Yekaterinburg, Ural State Mining University, 2011, 316 p.
3. Karpenko N. V. Obogashchenie Rud, 1992, No. 1, pp. 13–20.
4. Kozin V. Z., Vodovozov K. A. Obogashchenie Rud, 2013, No. 5, pp. 21–24.
5. Kozin V. Z., Vodovozov K. A. Obogashchenie Rud, 2013, No. 1, pp. 37–39.
6. Morozov V. V., Topchayev V. P., Ulitenko K. Ya., Ganbaatar Z., Delgerbat L. Razrabotka i primeneniye avtomatizirovannykh sistem upravleniya protsessami obogashcheniya poleznykh iskopayemykh (Development and application of automated systems of control of mineral dressing processes). Moscow, «Ore and Metals» Publishing house, 2013, 508 p.
7. Kovrov A. A. Gornaya Promyshlennost — Mining Industry, 2008, No. 1, pp. 35–37.
8. Pat. 2347205 Russian Federation.
9. Pat. priority № 2011154028 from 28.12.2011.
10. Stantsiya oprobovaniya pulpy tipa «SOP-1P». Rukovodstvo po ekspluatatsii (Pulp sampling station of «SOP-1P» type. Operation manual). Yekaterinburg, Tails KO, 2010, 54 p.