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Koizhanova, Aigul
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Mechanical Engineering

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Development and Implementation of Innovative Technologies That Ensure an Increase in The Extraction of Non-ferrous, Noble, Rare, Rare-Earth Metals Kenzhaliyev, Bagdaulet Kenzhalievich; Arkad’yevich, Kvyatkovskiy Sergey; Anatolyevich, Trebukhov Sergey; Abdulvaliyev, Rinat Anvarbekovich; Koizhanova, Aigul; Tussupbayev, Nessipbay Kuandykovich; Gladyshev, Sergey Vladilenovich; Kassymova, Gulzhaina K.
Teknomekanik Vol. 5 No. 1 (2022): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (655.643 KB) | DOI: 10.24036/teknomekanik.v5i1.11972

Abstract

The article presents the most innovative technologies developed by Satbayev University, "Institute of Metallurgy and Ore Beneficiation" JSC (Republic of Kazakhstan, Almaty) in recent years. The implementation of these works on an industrial scale will lead to significant economic and environmental effects. The following technologies are described: synthesis of a new foaming agent for intensification of flotation enrichment of gold-bearing ores; multicomponent microflotation, which allows to increase the extraction of valuable metals at existing deposits and to develop new, relatively poor and previously economically unpromising deposits; flotation enrichment of persistent gold-containing ore; contractile pyrometallurgical selection, which allows direct melting of persistent gold-containing raw materials with the transfer to the gas phase of arsenic, sulfur and other volatile components, followed by their neutralization and concentration of gold, silver and other non-ferrous metals in matte melt; continuous conversion of copper matte in the Vanyukov furnace; processing of liquid metallurgical slags in a furnace with an electrically heated coke filter; vacuum distillation refining of rough selenium; extraction of rare earth metals from extraction phosphoric acid obtained during the processing of phosphorites; processing of high-grade low-quality bauxite.
The effect of biochemical oxidation on the hydrometallurgical production of copper Koizhanova, Aigul; Magomedov, David; Abdyldayev, Nurgali; Yerdenova, Maria; Bakrayeva, Akbota
Teknomekanik Vol. 6 No. 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.812 KB) | DOI: 10.24036/teknomekanik.v6i1.16072

Abstract

The article presents the results of the use of the biochemical leaching method for copper-bearing non-commercial ore in a full hydrometallurgical cycle. The object of the study was the average copper-bearing ore of the Satbayev deposit, with an initial copper content of 0.26%. The experimental part of the full hydrometallurgical cycle included percolation leaching, extraction, and re-extraction tests, as well as electrodeposition tests and the production of finished cathode copper. Two variants of percolation leaching were performed as a comparison: a standard method using only sulfuric acid and a preliminary bacterial oxidation method for mineral raw materials with an adapted bacterial strain, Acidithiobacillus ferrooxidans. Percolation leaching experiments showed a significant reduction in sulfuric acid consumption when preliminary bacterial oxidation was used. Upon reaching the level of copper extraction from the ore of 86–87%, the final consumption of sulfuric acid for the standard leaching method was 15.5 kg per ton, while 9.4 kg per ton was required for the biochemical method. The productive solution obtained in the biochemical leaching process showed full suitability for all technological stages of hydrometallurgical copper production.
Co-Authors Abdulvaliyev, Rinat Anvarbekovich Abdyldayev, Nurgali Anatolyevich, Trebukhov Sergey Arkad’yevich, Kvyatkovskiy Sergey Bakrayeva, Akbota Gladyshev, Sergey Vladilenovich Kassymova, Gulzhaina K. Kenzhaliyev, Bagdaulet Kenzhalievich Magomedov, David Tussupbayev, Nessipbay Kuandykovich Yerdenova, Maria