Finely Dispersed Micro- and Nano-Gold Recovery Using Thermomorphic Polymer with Diphenylphosphine
- 1 Downloads
The article reports test data on adsorption and flotation characteristics of thermomorphic polymer joined with diphenylphosphine—TMPD. The test materials are natural pyrite and arsenopyrite, and models of gold-bearing sulfide minerals. Electron microscopy and X-ray structure analysis prove that reductive adsorption of gold at the surface of sulfide minerals from HAuCl4 solution allows modeling natural aggregates of sulfides and finely dispersed gold. UV spectrophotometry proves selective adsorption of TMPD at gold. Laser scanning microscopy shows connection of TMPD with micro- and nano-size gold on polished sections of pyrite and arsenopyrite. During monomineral flotation, joint use of TMPD and butyl xanthate at a ratio of 1:1 doubles the yield of gold-bearing sulfides and enables maximum recovery of gold minerals at the total consumption of reagents reduced by 30–50%. It is found that TMPD is selective relative to gold-bearing minerals and its combination with xanthate ensures a considerable increment in gold-bearing mineral recovery by flotation.
KeywordsThermomorphic polymer diphenylphosphine gold-bearing sulfides adsorption flotation
Unable to display preview. Download preview PDF.
- 1.Bocharov, V.A., Ignatkina, V.A., and Abryutin, D.V., Tekhnologiya pererabotki zolotosoderzhashchego cyr’ya (Processing of Gold-Bearing Materials), Moscow: MISiS, 2011.Google Scholar
- 2.Kotlyar, Yu.A., Meretukov, M.A., and Strizhko, L.S., Metallurgiya blagorodnykh metallov (Precious Metal Metallurgy), Textbook, vol. 1, Moscow: Ruda Metally, 2005.Google Scholar
- 3.Matveeva, T.N., Nedosekina, T.V., and Ivanova, T.A., Theoretical Issues of Selective Flotation of Gold-Bearing Sulfides, Gorny Zh., 2005, no. 4, pp. 56–59.Google Scholar
- 4.Getman, V.V. and Gapchich, A.O., Investigation into Interaction of Diisobutyldithiophosphinate (DIPh) with Sulfide Surface Containing Emulsion Gold Dissemination, Obogashch. Rud, 2013, no. 6, pp. 18–21.Google Scholar
- 6.Getman, V.V., Selective Concentration of Platinoids from Copper-Nickel Ores by Complexing Thermomorphic Agents and Modified Thermomorphic Polymers, Theses of Cand. Tech. Sci., Moscow, 2010.Google Scholar
- 9.Zimbovsky, I.G. and Gapchich, A.O., Investigation into Modified Thermomorphic Polymers as Selective Collectors in Flotation of Rebellious Gold-Bearing Materials, GIAB, 2016, no. 6, pp. 161–170.Google Scholar
- 10.Gapchich, A.O., Experimental Substantiation of Dithiophosphinate-and Dithiazine-Class Agents Application to Float Gold Ores, Thesis of Candid. Tech. Sci., Moscow, 2015.Google Scholar
- 11.Tauson, V.L., Ovchinnikova, O.I., Bessarabova, O.I., et al., Distribution of Gold Precipitated in Reducing Adsorption from HAuCl4 Solution to Magnetite, Sphalerite, and Galena Crystals, Geolog Geophys., 2000, vol. 14, no. 10, pp. 1480–1483.Google Scholar
- 12.Meretukov, M.A., Natural Gold Nano-Particles, Tsv. Met., 2006, no. 2, pp. 36–41.Google Scholar
- 14.Chanturia, V.A., Ivanova, T.A., and Kaparulina, E.V., Procedure to Estimate Efficiency of Flotation Agent Reactivity with Gold-Bearing Pyrite, Tsv. Met., 2010, no. 8, pp. 16–19.Google Scholar