Thermo-sensitive polymers and modified reagents for flocculation and flotation of Au and Pt in the processing of complex ores, T.N. Matveeva, V.A. Chanturiya, and V.V. Getman
- Organization:
- The Southern African Institute of Mining and Metallurgy
- Pages:
- 10
- File Size:
- 380 KB
- Publication Date:
- Jan 1, 2020
Abstract
Most of the Au and PGM ores in Russia are characterised by a thin mineral impregnation of noble
metals in sulfide minerals, and a large variety of mineral forms that lead to high loss of precious metals
with fine fractions during flotation. In modern flotation technology, the rational choice of reagents is
one of the main trends for selective separation of minerals and effective metals recovery. New data on
the selectivity of the thermo-sensitive polymer with specific functional groups (TMPPh) as a flocculant
and collector of Au and Pt fine fractions are available. The selective modified collector (DEDTCm) for
the recovery of Au and Pt from complex ores is discussed in this paper. Scanning electronic microscopy
(SEAM), laser SIM and AFM microscopy, UV and IR spectroscopy were applied to study the adsorbed
layer of new reagents on the mineral surface. Flotation tests of TMPPh on the gold-bearing ore of the
Olimpiada deposit showed an increase in Au extraction and Au content in the concentrate of the rougher
flotation. Using a combination of reagents TMPPh and ButX, the quality of the Au and Pt concentrates
increased in 1.7 time with an increase in recovery up to 15 % compared with the traditional reagent
mode. Testing of TMPPh polymers in flotation of Pt-Cu-Ni ore at Norilsk Nickel has shown the ability
to obtain a concentrate with a higher Pt content. Recovery of platinum is 17% higher than recovery in
an experiment without polymer.
Application of DEDTCm helped to achieve higher technological parameters in flotation of lowgrade
Rt-Cu-Ni ore. Compared to the basic mode Pt recovery was plus 13%, Pd recovery was plus 9%
and the content of precious metals in the rougher flotation concentrate increased in 2,5 - 4 times.
The studies have been supported by Grants of the President of RF “Scientific School of
Academician V.A. Chanturiya” NSh-220.2012.5, NSh-748.2014.5.
Keywords: Au and Pt complex ores, flotation, flocculation, thermo-sensitive polymer TMPPh,
modified collector
Citation
APA: (2020) Thermo-sensitive polymers and modified reagents for flocculation and flotation of Au and Pt in the processing of complex ores, T.N. Matveeva, V.A. Chanturiya, and V.V. Getman
MLA: Thermo-sensitive polymers and modified reagents for flocculation and flotation of Au and Pt in the processing of complex ores, T.N. Matveeva, V.A. Chanturiya, and V.V. Getman. The Southern African Institute of Mining and Metallurgy, 2020.