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Comparative analysis of concentrate grading and revenue in Polish copper mines

Malewski J.

Mining Science

2016

Vol. 23

55--64

The paper presents results of a comparative analysis of revenues of the Lubin, Polkowice-Sieroszowice and Rudna mines (KGHM Polska Miedź S.A). The criterion used for comparison is the Net Smelter Revenue formula (NSR) based on heuristic model of functional relationships between the con-centration of metals in ore and copper concentrates, the operational efficiency, and the prices of concentrates and metals in the global markets. The calculations have been performed for the data coming from the mining practice. The NSR calculations show that the Lubin mine is nearly 2 times less profitable than the Rudna mine, yet if we compare Cu+Ag+Au grading to the best (Rudna) mine, that difference is only 1.6-fold. However, it must be noted here that the Rudna and Polkowice mines are much deeper than the Lubin mine, therefore the total profit from the mine are not as different as the NSR value.

Dependence of mine revenue on the grade of copper concentrate

Malewski J., Krzeminska M.

Physicochemical Problems of Mineral Processing

2012

Vol. 48, iss. 2

545-554

The paper presents a method of calculating the Net Smelter Return or Revenue (NSR) formula for copper ore mines based on heuristic models of functional relationships between concentration of metals in ore and copper concentrates, the operational efficiency, and the metal prices in the global markets. A method has been proposed to identify these relationships as well as a way of estimating their parameters. The NSR optimization calculations have been performed for the data coming from the mining and smelting practise of KGHM Polska Miedź S.A., which demonstrate its practical usefulness in assessing the efficiency of production based on the current quality of ore, the efficiency of its beneficiation, and the market prices of metals.