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The idea of Optimisation Platform is to create an innovative system. It is dedicated to technology and cost efficiency improvement of process realized at the Division of Concentrators of KGHM Polska Miedz SA. This highly sophisticated tool is based on visual, acoustic and vibrating detection systems. The range of its functionality was described in this work. Three main utility modules were described: froth flotation image processing (FloVis), grinding and classification monitoring (MillVis) and belt conveyors control unit (ConVis). The effects of implementation of the system under KGHM conditions were described. It is concluded that the Optimisation Platform is one of the most promising solution for improvement of technology and economy performance at the Division of Concentrators of KGHM Polska Miedz S.A.

A proper choice of reagents quality and quantity has a great influence on the flotation process effectiveness. Attempts to develop a method to create sodium xanthates blends used as a collector for copper sulphides flotation was undertaken at the Division of Concentrators of KGHM Polska Miedz S.A. Laboratory tests involving different blends of sodium xanthates were performed followed by the data analysis of the results. The obtained results proved that it was profitable to prepare a blend consisted of the so called “weak” and “strong” xanthates with a minimum difference in the alkyl chain length of two carbon atoms. The results of research will be helpful for development of specific xanthates blends dedicated to technology applied at KGHM under industrial conditions.

Body size is one of the most important biological characters, as it defines many aspects of organismal functioning at the individual and community level. As body size controls many ecological aspects of species, it is often used as a proxy for the status of the ecosystem. So far no consistent mechanism driving size shift has been proposed. In this study, we investigated bathymetric variability in zooid's size and shape in aquatic colonial animals, Bryozoa. Although the response of bryozoan zooid size to temperature or food concentration has been experimentally proven, the effects of natural environmental variability on marine bryozoan populations has been much less explored. The presented investigation is aimed to assess the bathymetric patterns and environmental drivers of bryozoan zooid size on continental shelf and slope of southern Iceland. 196 colonies of 11 species representing different colonial forms and taxonomic groups were selected for zooid characteristics measurements. A pattern of depth-related increase in zooid size was documented for Bicellarina alderi, Chartella barleei and Sarsiflustra abyssicola, no statistically significant effects were detected for the other eight species. Two species Bicellarina alderi and Caberea ellisii had significantly longer zooids in deeper water, shape of the remaining species did not change along the bathymetric gradient. Intercolonial coefficient of variation in zooid size did not change across the depth gradient. Temperature differences along studied depth could be responsible for the observed pattern., Author(s): Anna Stepien [sup.1] , Piotr Kuklinski [sup.1] , Maria Wlodarska-Kowalczuk [sup.1] , Malgorzata Krzeminska [sup.1] , Gudmundur Gudmundsson [sup.2] Author Affiliations: (1) Institute of Oceanology Polish Academy of Science, [...]

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. [ABSTRACT FROM AUTHOR]