RATIONALE OF LOSSES AND DILUTION OF MINERALS OF AYAK-KODZHAN DEPOSIT
Based on the existing engineering standards of non-ferrous metallurgy with open pit development, a study of losses and dilution of the mineral deposits Ayak-Kodzhan (Kazakhstan, Pavlodar region) was conducted. The matrix sampling of the geological model with the size of the unit volume of 2 × 2 × 2 m was adopted for the calculation. In the calculations of losses and dilution in the conditions of occurrence of the field the analytical method was used for the conditions of the development of inclined and falling ore bodies using an open pit development. Using the analytical method guideline values for mineral losses were defined which are generated in the contact with the host rocks, and the losses that are mingled during recess of diluting rocks and boundary extraction of minerals in the array or loosened rock mass.