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Wyświetlanie 1-2 z 2
Tytuł:
Complex processing of oxidized copper and zinc oxide ores with simultaneous production of several products
Autorzy:
Shevko, Viktor
Zharmenov, Abdurassul
Aitkulov, Dosmurat
Terlikbaeva, Alma
Powiązania:
https://bibliotekanauki.pl/articles/1448300.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
zinc ores
copper ores
calcium carbide
ferroalloys
zinc sublimates
Opis:
Modern production of non-ferrous metals is imperfect due to the loss of rock mass and metal in the technological chain ore mining to metal production. Processing of zinc oxide and oxidized copper ores by hydrometallurgical, pyrometallurgical and flotation methods is associated with formation of dump cakes, clinkers and flotation tailings. Therefore, all these methods are characterized by a low coefficient of complex use of raw materials (for example, for the Waelz process this coefficient is not higher than 35%). To increase the degree of complex processing of oxide raw materials, it is necessary to change the attitude to raw materials and create industrial technologies based on new principles. The article presents theoretical and applied research results on complex processing of oxidized copper and zinc oxide ores based on the new attitude to raw materials and new effective technologies allowing us to increase significantly the level of raw materials’ complex processing. Theoretical regularities, features and optimal technological parameters of new methods of complex processing of oxide, zinc and oxidized copper ores were found based on the ideology of a universal technological raw material and the simultaneous production of several products in one furnace unit.
Źródło:
Physicochemical Problems of Mineral Processing; 2021, 57, 1; 226-249
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical and experimental substantiation of obtaining an alloy from flotation tailings of lead-zinc sulfide ore
Autorzy:
Shevko, Victor M.
Makhanbetova, Baktygul A.
Aitkulov, Dosmurat K.
Powiązania:
https://bibliotekanauki.pl/articles/2200342.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
lead-zinc ore
cinder
enrichment tailings
thermodynamic modeling
electric melting
ferrosilicon
lead-zinc sublimates
Opis:
The article presents the results of thermodynamic and experimental research on the processing of cinders from the firing of Shalkiya deposit lead-zinc ore tailings with the production of siliceous ferroalloys. Thermodynamic modeling carried out using the HSC-6.0 complex based on the Gibbs energy minimization principle showed that the interaction occur with the formation of CaSiO3, FeSiO3, MgSiO3, K2OˑSiO2, FeSi, Fe5Si3, SiC, Fe3Si, Si, SiOg, FeSi2.33, FeSi2, CaSi, Zn, Zng, Pb, Pbg; an increase in the iron amount in the system allows increasing the silicon extraction degree into the alloy at 1800°C to 76%, to reduce the silicon concentration in the alloy from 41 to 24%; FS25 grade ferrosilicon formed at 1752-1867°C in the presence of 88-100% iron, and FS45 grade ferrosilicon – at 1863-1900°C and 20-22.4% iron. Electric melting of a charge containing 63.83% calcined cinder of tailings, 19.15% coke, and 17.02% steel chips allows to obtain FS45 grade ferrosilicon (44.1-43.9% Si) with the extraction of 69.7% silicon and sublimates with the content of 32-38% zinc and lead. The results obtained allow complex processing of lead-zinc sulfide ore tailings with the extraction of not only non-ferrous metals, but also silicon in the ferroalloy.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 1; art. no. 161853
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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