6 research outputs found

    A concept of management of flotation tailings of Polish copper industry

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    Opisano w艂a艣ciwo艣ci mineralogiczno - chemiczne odpad贸w flotacyjnych ze wzbogacania rud miedzi zgromadzonych w sk艂adowiskach zlokalizowanych na terenie regionu legnicko-g艂ogowskiego oraz przedstawiono szacunki ich ilo艣ci jak r贸wnie偶 perspektywiczne wielko艣ci ich przyrost贸w. Opisano wa偶niejsze wyniki bada艅 prowadzonych w okresie ostatnich kilkudziesi臋ciu lat w kierunku wykorzystania tych odpad贸w oraz realne kierunki ich zastosowa艅. Stwierdzono, 偶e najbardziej racjonalnym rozwi膮zaniem problemu odpad贸w flotacyjnych jest sprowadzenie ich z powrotem pod ziemie, jako g艂贸wnego sk艂adnika podsadzki zestalanej oraz jako materia艂 do wype艂niania starych zrob贸w. Przedstawiono tak偶e kierunki i wyniki bada艅 nad wykorzystaniem odpad贸w flotacyjnych, jako surowca wt贸rnego do produkcji materia艂贸w drogowych i budowlanych, a tak偶e jako 藕r贸d艂a cennych minera艂贸w u偶ytecznych.Flotation tailing of Polish copper sulfide ores represents more than 94% of the mass of run-of-mine ore. The ore is of sedimentary origin and the tailing contains mainly quartz, dolomite, clay minerals, traces of sulfides, and some accessory minerals. Waste handling and disposal system includes traditional slurry transport combined with a hydraulic placement in an impoundment. Nearly 600 million Mg of copper flotation tailings were up to now deposited in the Legnica-Glogow region. In this work, main future trends in accumulation of the copper ore flotation tailings and results of numerous investigations on the utilization of these tailings are presented. It was confirmed that the most rational and environmentally sound solution to increasing quantity of flotation tailings is to dispose them underground where the ore was previously extracted from. The flotation tailings, dewatered to a paste form and containing certain amount of binding agents, can be used as hardened backfilling material for structural support in underground mines. Other feasible directions of utilization of the copper ore flotation tailing are also discussed in the paper. Attention was paid to many encouraging results of investigations on application of the tailings as a secondary raw material. It can be used as a filler for bituminous pavement and also as a source of rare accessory minerals dispersed in the original ore and residual principal metals (copper and silver) remaining in tailing. All minerals of the tailing are well liberated, and therefore, any further beneficiation process applied to the tailing is expected to be inexpensive. In this work, results of investigations on gravity separation of flotation tailing providing a concentrate of heavy minerals, a source of valuable rare elements, are presented. It was also found that additional aeration of the stream of the transported flotation tailing slurry provides mineralized froth containing bituminous matter rich in significant amount of copper. This quasi-flotation operation for the flowing tailing pulp can be performed in a simple intermediate tank while overflowing froth is directed to a hydrometallurgical processing and it can significantly reduce total loss of copper in the disposed tailings

    Directions in development of ore processing technology in Polish copper industry

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    W artykule analizowano mo偶liwo艣ci i celowo艣膰 zastosowania niekt贸rych 艣wiatowych trend贸w w technologii przer贸bki rud metali nie偶elaznych w odniesieniu do uwarunkowa艅 wykorzystania rud miedzi z LGOM. Szereg problem贸w technologicznych przer贸bki rud miedzi w krajowych zak艂adach wzbogacania w du偶ym stopniu pojawia si臋 tak偶e w innych zak艂adach wzbogacania rud metali w 艣wiecie. Wobec stopniowego wyczerpywania z艂o偶a nieuniknione jest pogarszanie si臋 w艂a艣ciwo艣ci wydobywanych rud. W tej sytuacji, zdaniem autor贸w artyku艂u, konieczna jest ci膮g艂a modernizacja wyposa偶enia zak艂ad贸w przer贸bczych, rozwa偶enie wprowadzenia nowych schemat贸w technologicznych wraz z zastosowaniem kombinowanych metod flotacyjno-chemicznych, zrewidowanie pogl膮d贸w na wyb贸r i zastosowanie odczynnik贸w flotacyjnych uwzgl臋dniaj膮cych zmieniaj膮c膮 si臋 specyfik臋 rud, zastosowanie uzupe艂niaj膮cego (kontrolnego) wzbogacania prostymi metodami odpad贸w flotacyjnych przed zdeponowaniem ich w sk艂adowisku, opanowanie op艂acalnych technologii wykorzystania odpad贸w flotacyjnych.Ways of implementation and suitability of world's recent developments in mineral processing of nonferrous metallic ores for Polish LGOM deposits have been analyzed in the paper. A great number of problems, which occur during processing of the Polish ore are similar to those appearing in other worldwide nonferrous ores. It includes depletion of available deposits and decreasing quality of the ores making them difficult-to-treat materials. As a result a continuous improvement of mineral processing plant equipment to the changing parameters of ore becomes crucial. There also is a need for introduction of new technological flow sheets that include a combination of flotation and chemical methods to effectively recover valuable minerals. A review of concepts of currently used types and amounts of reagents, and if necessary, their adjustment becomes a key factor of the efficiency of the process. An application of economically feasible new methods of tailing utilization and implementation of a simple supplementary processing step for flotation of tailing just before sending it to the tailing pond probably are also worth to be considered
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