Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino Acids
The article discusses the interaction in amino acid–gold cyanide systems using amino acids of different structures. The formation of complex compounds of gold cyanide with amino acids with the participation of carboxyl and amino groups is shown. A relationship has been established between the format...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/11/12/461 |
| _version_ | 1797380638926438400 |
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| author | Bagdaulet Kenzhaliyev Tatiana Surkova Aigul Koizhanova Dinara Yessimova Leila Amanzholova Zamzagul Dosymbayeva |
| author_facet | Bagdaulet Kenzhaliyev Tatiana Surkova Aigul Koizhanova Dinara Yessimova Leila Amanzholova Zamzagul Dosymbayeva |
| author_sort | Bagdaulet Kenzhaliyev |
| collection | DOAJ |
| description | The article discusses the interaction in amino acid–gold cyanide systems using amino acids of different structures. The formation of complex compounds of gold cyanide with amino acids with the participation of carboxyl and amino groups is shown. A relationship has been established between the formation of gold complexes with amino acids and the degree of its extraction in the process of leaching from low-grade ore with sodium cyanide together with amino acids: the higher the degree of participation of the amino group in the formation of the complex, i.e., covalent bond, the more pronounced the effect of the amino acid on the degree of gold leaching. The contribution to the formation of the complex of the carboxyl group (ionic bond) and the amino group (covalent donor–acceptor) can be assessed by the intensity of the band at a wave number of 1419 cm<sup>−1</sup> of the IR spectra of the systems: gold cyanide–amino acid. This approach makes it possible to predict the effect of amino acid structure on gold recovery during cyanide leaching based on IR spectra. |
| first_indexed | 2024-03-08T20:40:07Z |
| format | Article |
| id | doaj.art-b977df931bc94387bfb031984122825d |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-03-08T20:40:07Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj.art-b977df931bc94387bfb031984122825d2023-12-22T14:16:04ZengMDPI AGInorganics2304-67402023-11-01111246110.3390/inorganics11120461Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino AcidsBagdaulet Kenzhaliyev0Tatiana Surkova1Aigul Koizhanova2Dinara Yessimova3Leila Amanzholova4Zamzagul Dosymbayeva5JSC “Institute of Metallurgy and Ore Beneficiation”, Satbayev University, Shevchenko Str., 29/133, Almaty 050010, KazakhstanJSC “Institute of Metallurgy and Ore Beneficiation”, Satbayev University, Shevchenko Str., 29/133, Almaty 050010, KazakhstanJSC “Institute of Metallurgy and Ore Beneficiation”, Satbayev University, Shevchenko Str., 29/133, Almaty 050010, KazakhstanJSC “Institute of Metallurgy and Ore Beneficiation”, Satbayev University, Shevchenko Str., 29/133, Almaty 050010, KazakhstanJSC “Institute of Metallurgy and Ore Beneficiation”, Satbayev University, Shevchenko Str., 29/133, Almaty 050010, KazakhstanJSC “Institute of Metallurgy and Ore Beneficiation”, Satbayev University, Shevchenko Str., 29/133, Almaty 050010, KazakhstanThe article discusses the interaction in amino acid–gold cyanide systems using amino acids of different structures. The formation of complex compounds of gold cyanide with amino acids with the participation of carboxyl and amino groups is shown. A relationship has been established between the formation of gold complexes with amino acids and the degree of its extraction in the process of leaching from low-grade ore with sodium cyanide together with amino acids: the higher the degree of participation of the amino group in the formation of the complex, i.e., covalent bond, the more pronounced the effect of the amino acid on the degree of gold leaching. The contribution to the formation of the complex of the carboxyl group (ionic bond) and the amino group (covalent donor–acceptor) can be assessed by the intensity of the band at a wave number of 1419 cm<sup>−1</sup> of the IR spectra of the systems: gold cyanide–amino acid. This approach makes it possible to predict the effect of amino acid structure on gold recovery during cyanide leaching based on IR spectra.https://www.mdpi.com/2304-6740/11/12/461goldcyanide leachingamino acidslow-grade raw materialscomplex compounds |
| spellingShingle | Bagdaulet Kenzhaliyev Tatiana Surkova Aigul Koizhanova Dinara Yessimova Leila Amanzholova Zamzagul Dosymbayeva Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino Acids Inorganics gold cyanide leaching amino acids low-grade raw materials complex compounds |
| title | Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino Acids |
| title_full | Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino Acids |
| title_fullStr | Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino Acids |
| title_full_unstemmed | Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino Acids |
| title_short | Study of the Cyanide Leaching of Gold from Low-Grade Raw Materials in the Presence of Amino Acids |
| title_sort | study of the cyanide leaching of gold from low grade raw materials in the presence of amino acids |
| topic | gold cyanide leaching amino acids low-grade raw materials complex compounds |
| url | https://www.mdpi.com/2304-6740/11/12/461 |
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