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Wrocław, Poland

Chrzan K.L.,Wroclaw University of Technology | Turek A.,Wroclaw University of Technology | Sieczko L.,KGHM
Przeglad Elektrotechniczny | Year: 2010

The heavy pollution of bushing insulators on rectifier sets of electrostatic precipitators causes electrical discharges, flashovers and even porcelain breakdowns. The surface conductivity measured by paper strip probe exceeds the value of 200 μS. A list of possible remedies was given. Source

Jamiolkowski M.,University of Turin | Chandler R.J.,Imperial College London | Hoeg K.,Norwegian Geotechnical Institute | Swierczynski W.,KGHM | Wolski W.,Geoteko Ltd.
Geotechnical Engineering | Year: 2010

The paper summarizes the experiences of the writers in assisting KGHM (the Polish acronym for Copper Mine and Mill Company) in the development of one the world's largest copper tailings disposal facility, located in South-West Poland. This paper describes the tailings disposal facilities, the geological features of the area with particular emphasis on the considerable influence of the various Pleistocene glaciations, and the geotechnical aspects of the design and construction. The geotechnical characterization of the tailings and of the foundation soils is described, focusing on their shear strength, on the mining-induced seismicity and on the factors controlling the stability of the ring-dam that confines the tailings. Finally, the results of the analyses of the stability of the dam, together with the details of the intensive monitoring of the performance of the dam, the latter carried out by KGHM, are presented. Source

News Article
Site: http://www.materialstoday.com/news/

SGL Group reports that it has won the biggest single order for graphite shell and tube heat exchangers in its history. Placed last month by KGHM Polska Miedz, a large producer of copper and silver, the order comprises the supply of graphite shell and tube heat exchangers used for the cooling of a wash liquor containing sulfuric acid. The order has a low single-digit million euro volume. The heat exchangers are equipped with SGL Group’s DIABON graphite tubes covered with CARBOGUARD carbon fiber wrapping. This story is reprinted from material from SGL, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.

Zalewska A.,Polish Academy of Sciences | Pytel W.,KGHM | Chorowski M.,Wroclaw University of Technology | Cygan S.,KGHM | And 14 more authors.
Acta Physica Polonica B | Year: 2010

The Polkowice-Sieroszowice mine in one of the seven candidates for the future pan-European underground laboratory studied in the framework of the LAGUNA project. We review the evidence that from the point of view of geology, long-term plans for the mine and existing infrastructure, and support of the authorities this is a perfect place to host the 100 kton liquid argon detector GLACIER. Source

Tumidajski T.,AGH University of Science and Technology | Kasinska-Pilut E.,KGHM | Gawenda T.,AGH University of Science and Technology | Naziemiec Z.,Instytut Szkla | Pilut R.,KGHM
Gospodarka Surowcami Mineralnymi / Mineral Resources Management | Year: 2010

Polish copper ores are the mixtures of three lithologic types: sandstones, shales and carbonates. Each of them features by different values of physico-mechanical characteristics, what influences on amounts of energy required to their comminution. The further consequence of this fact is other course of comminution process of the ore having various lithologic types contents and necessity of application of the other beneficiation operations system by various material streams flows. The examples of solutions for technological systems beneficiating various mixtures taking into account lithologic composition were presented in table 1 and on fig. 1. The evaluation of energy demand needed to feed grinding process was conducted by the method of Bond work indexes. The results of analyzes were shown in tables 2 and 3. They show the differences between factors in dependence on sample location in the deposit (also time of sampling). Furthermore, the program of further investigation was initially discussed, allowing to better characterize work of the system of feed preparation to beneficiation process. The research will be continued. Source

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