FIELD: metallurgy.
SUBSTANCE: invention relates to gold extraction from acid solutions by using high-capacity high-selectivity sorbent based on thiocarbamoilchitosan (TCC) with boding degree of 0.4-0.9 that is pretreated by 0.01-0.1 M-solution of hydrochloric acid for 1-2 h and, then filtered. Gold sorption is performed from acid chloride solutions at pH=1.0-1.5 and with periodic mixing. Sorbent capacity, as related to gold ions (III), approximates to 3.7 mmole/g.
EFFECT: increased gold yield without increased iron yield.
2 tbl, 20 ex
| Title | Year | Author | Number |
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| N-2-(2-PYRIDYL)ETHYLCHITOSAN AND SYNTHESIS METHOD THEREOF | 2008 |
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| METHOD OF THIOCARBAMOYLCHITOSAN OBTAINMENT | 2007 |
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| MONOLITHIC COMPOSITE SORBENTS FOR EXTRACTION OF MERCURY FROM AQUEOUS MEDIA | 2022 |
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| USE OF COMPOSITE MATERIAL OF COMPOSITION Fe(O,OH)-SiO, OBTAINED ON BASIS OF WASTES FROM INDUSTRIAL PROCESSING OF RICE, AS SORBENT FOR EXTRACTING ANTIMONY (III) IONS | 2022 |
|
RU2821100C1 |
| APPLICATION OF SODIUM ALUMOSILICATE PRODUCED ON THE BASIS OF RICE STRAW PRODUCTION WASTE AS A SORBENT FOR EXTRACTION OF ANTIMONY(III) IONS | 2022 |
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RU2789637C1 |
| METHOD OF PRODUCTION OF COMPOSITE SORPTION MATERIALS | 2004 |
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RU2281160C1 |
