Cites 2016

Dispersive effect of low molecular weight sodium polyacrylate on pyrite-serpentine flotation system

Kaile Zhao 1, 2  ,  
Wu Yan 2,  
Xiaohui Wang 2,  
Guohua Gu 1,  
Jie Deng 2,  
Xiong Zhou 2,  
Bo Hui 2
1.School of Resources Processing and Bioengineering,Central South University,Changsha 410083,China; 2.Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu 610041,China
Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China
Physicochem. Probl. Miner. Process. 2017;53(2):1200–1213
Publish date: 2017-05-23
In this work, the dispersive effect of low molecular weight sodium polyacrylate (PAAS) on serpentine, and its dispersion mechanism were systematically investigated through zeta potential measurements, micro and batch flotation as well as adsorption tests. At pH 5, where flotation of iron sulphide was routinely performed, pyrite and serpentine minerals were oppositely charged, and therefore they were attracted to each other. Slime coatings of serpentine adhered to the surface of pyrite, decreasing the adsorption density of a collector on the pyrite surface, but also reducing the flotation recovery. PAAS increased the flotation recovery of pyrite by promoting dispersion between pyrite and serpentine. The effective flotation separation of pyrite from the refractory iron sulphide ore was possible by using PAAS as a dispersant. Anionic PAAS adjusted the surface potential of serpentine through adsorption on the serpentine surface and changed the interaction between pyrite and serpentine particles from attractive to repulsive, and then dispersed pyrite and serpentine.
Kaile Zhao   
1.School of Resources Processing and Bioengineering,Central South University,Changsha 410083,China; 2.Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu 610041,China, Chengdu, Sichuan province near Third Avenue South, 5th  , 610041 sichuan, changsha, China
1. BANKOFF S.G., 1943, Experiments with slime coatings, Transactions of American Institute for Mining Engineers, 153, 473-478.
2. BHAMBHANI T., NAGARAJ D.R., VASUDEVAN M., 2012, A typical grade-recovery curves: Transport of Mg silicates to the concentrate explained by a novel phenomenological model, In: Young, C.A., Luttrell, G.H. (Eds.), Separation Technologies for Minerals, Coal, and Earth Resources. SME, Englewood, CO, USA, pp. 479-488.
3. BICAK O, EKMEKCI Z., BRADSHAW D.J., HARRIS P.J., 2007, Adsorption of guar gum and CMC on pyrite, Minerals Engineering, 20(10), 996-1002.
4. BOISVERT J. P., PERSELLO J., CASTAING J.C., CABANE B., 2001, Dispersion of alumina-coated TiO2 particles by adsorption of sodium polyacrylate, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 178, 187-198.
5. BOISVERT J. P., PERSELLO J., FOISSY A., CASTAING J.C., CABANE B., 2000, Effect of surface charge on the adsorption mode of sodium poly(acrylate) on alumina-coated TiO2 used as coating pigment, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 168, 287-296.
6. BREMMELL K.E., FORNASIERO D., RALSTON J., 2005, Pentlandite-lizardite interactions and implications for their separation by flotation, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 252(2/3), 207-212.
7. BULATOVIC S.M., 2007, Handbook of flotation reagents–Chemistry, Theory and Practice: Flotation of Sulfide Ores, Elsevier Science & Technology Publishing, England, Volume 3, pp. 215-231.
8. EDWARDS G.R., KIPKIE W.B., AGAR G.E., 1980, The effect of slime coatings of the serpentine minerals, chrysotile and lizardite on pentlandite flotation, International Journal of Mineral Processing, 7, 33-42.
9. FENG B., FENG Q.M., LU Y.P., 2012a, A novel method to limit the detrimental effect of serpentine on the flotation of pentlandite, International Journal of Mineral Processing,114, 11-13.
10. FENG B., LU Y.P., FENG Q.M., GU Y.L.,2012b, Talc-serpentine interactions and implications for talc depression, Minerals Engineering, 32(5), 68-73.
11. FENG B., LU Y.P., FENG Q.M., LI H., 2012c, Solution chemistry of sodium silicate and implications for pyrite flotation, Industrial & Engineering Chemistry Research, 7(1), 89–94.
12. FENG B., LU Y.P., LUO X.P., 2015a, The effect of quartz on the flotation of pyrite depressed by serpentine, Journal of Materials Research and Technology, 4,8-13.
13. FENG B., FENG Q.M., LU Y.P., WANG H.H., 2015b, The effect of sodium carbonate on the dispersion behaviour and froth flotation of a nickel ore, The Journal of The South African Institute of Mining and Metallurgy, 115, 1239-1242.
14. GAUDIN A.M., FUERSTENAU D.W., MIAW H.L., 1960, Slime coatings in galena flotation, Canadian Mining and Metallurgical Bulletin,53, 960-963.
15. HUANG L.X., AN Q.F., ZHANG X.Y., LI L.S., 2005, Preparation of sodium polyacrylate dispersant and its application, Journal of Shanxi University (Philosophy and Social Sciences), 28(4), 388-391.
16. HUYNH L., FEILER A., MICHELMORE A., RALSTON J., JENKINS P., 2000, Control of slime coatings by the use of anionic phosphates: A fundamental study, Minerals Engineering, 13(10-11), 1059-69.
17. KHRAISHEH M., HOLLAND C., CREANY C., HARRIS P., PAROLIS L., 2005, Effect of molecular weight and concentration on the adsorption of CMC onto talc at different ionic strengths, International Journal of Mineral Processing, 75(3–4), 197–206.
18. KIRJAVAINEN V., HEISKANEN K., 2007, Some factors that affect beneficiation of sulphide nickel–copper ores, Minerals Engineering, 20(7), 629-33.
19. LEARMONT M.E., IWASAKI I.,1984, Effect of grinding media on galena flotation, Minerals and Metallurgical Processing, 1, 136-143.
20. LI Z.H., 1993, The effect of gangue minerals containing magnesium on pentlandite flotation, Journal of Central South University, 24(1), 36-44.
21. LIU Y.T., WEN G.H., 1996, Mine geology manual, Press Metallurgical Industry, Beijing, China. pp.115-245.
22. LONG T., 2011, (PhD Thesis) Theoretical and technical investigation of strengthening dispersion and synchronous depression for magnesium-silicate minerals in the flotation of copper-nickel sulphide ores. Central South University, China, pp. 30-31.
23. LU Y.P., ZHANG M.Q., FENG Q.M., LONG T., OU L.M., ZHANG G.F., 2011, Effect of sodium hexametaphosphate on separation of serpentine from pyrite, Transactions of Nonferrous Metals Society of China, 21(1), 208-13.
24. NDLOVU B., FORBES E., FARROKHPAY S., BECKER M., BRADSHAW D., DEGLON D., 2014, A preliminary rheological classification of phyllosilicate group minerals, Minerals Engineering, 55, 190-200.
25. PEREIRA C.A., PERES A.E.C., 2005, Reagents in calamine zinc ores flotation, Minerals Engineering, 18, 275-277.
26. PIETROBON M.C., GRANO S.R., SOBIERAJ S., RALSTON J., 1997, Recovery mechanisms for pentlandite and MgO-bearing gangue minerals in nickel ores from Western Australia, Minerals Engineering,10(8), 775-86.
27. SMART S.T.R.C., 1991, Surface layers in base metal sulphide flotation, Minerals Engineering, 4 (7-11), 891-909.
28. SUNS.C., 1943, The mechanism of slime coating, Transactions of the American Institution of Minerals Engineering, 153, 479-492.
29. TRAHAR W.J., 1981, A rational interpretation of the role of particle size in flotation, International Journal of Mineral Processing, 8, 289-327.
30. WELLHAM E.J., ELBER L., YAN D.S., 1992, The role of carboxy methyl cellulose in the flotation of a nickel sulphide transition ore, Minerals Engineering, 5, 381-395.
31. WILLS B.A., FINCH J., 2016, Wills’ mineral processing technology, Elsevier Science & Technology Publishing (Eighth Edition), England, pp. 290-291.
32. WU C.L., LI H.X., 2004, Synthesis research and characterization of low-molecular weights poly-acrylic acid sodium, Journal of Anhui University of Science and Technology (Social Science), 24(1), 71-74.
33. ZHAO K.L., GU G.H., WANG H., WANG C.L., WANG X.H., LUO C., 2015, Influence of depressant foenum-graecum on the flotation of a sulfide ore which contains hydrophobic gangue, International Journal of Mineral Processing., 141, 68-76.
34. ZHOU X.W., FENG B., 2015, The effect of polyether on the separation of pentlandite and serpentine, Journal of Materials Research and Technology, 4(4), 429-433.