Surface property variations in flotation performance of calcite particles under different grinding patterns

Abstract

Based on the working principles of particle bed comminution, particles produced by high-pressure grinding rolls (HPGR) have surface properties different from particles produced by other grinding patterns, which exert great influence on mineral flotation. Flotation performances of calcite particles under different grinding patterns involving the use of HPGR, a jaw crusher, a dry ball mill, a wet ball mill, and a wet rod mill were studied using single mineral flotation tests. The surface properties of the particles under different grinding patterns were characterized to determine the flotation performance variation in terms of specific surface area, particle size distribution, AFM, XPS, and zeta potential. The results show that particles ground by HPGR exhibited improved flotation performance within the lower range of grinding fineness in both NaOL and dodecyl amine flotation systems compared to the particles prepared using other grinding patterns. Specific surface area, particle size distribution, surface roughness, Fe(III) contamination, binding energy, and zeta potential are greatly influenced by grinding patterns, which is the main cause of the flotation performance variation.

Keywords

calcite / surface property / grinding patterns / high-pressure grinding rolls / flotation performance

References

[1] MutzeT. Energy dissipation in particle bed comminution [J]. International Journal of Mineral Processing, 2015, 136: 15-19

[2] TavaresL M. Particle weakening in high-pressure roll grinding [J]. Minerals Engineering, 2005, 18(7): 651-657

[3] AydogaN N A, BenzerH. Comparison of the overall circuit performance in the cement industry: High compression milling vs. ball milling technology [J]. Minerals Engineering, 2011, 24(34): 211-215

[4] SchonertK. A first survey of grinding with highcompression roller mills [J]. International Journal of Mineral Processing, 1988, 22(1–4): 401-412

[5] AydogaN N A, BenzerH. High pressure grinding rolls (HPGR) applications in the cement industry [J]. Minerals Engineering, 2006, 19(2): 130-139

[6] KodaliaP, DhawanN, DepciT, LinC L, MillerJ D. Particle damage and exposure analysis in HPGR crushing of selected copper ores for column leaching [J]. Minerals Engineering, 2011, 24(13): 1478-1487

[7] FanJ, QiuG, JiangT, GuoY, HaoH, YangYong. Mechanism of high pressure roll grinding on compression strength of oxidized hematite pellets [J]. Journal of Central South University, 2012, 19(9): 2611-2619

[8] SunYe. Economic evaluation and risk analysis of high-pressure grinding process [J]. Metal Mine, 2012, 11: 63-66

[9] SaramakD. Mathematical models of particle size distribution in simulation analysis of high-pressure grinding roll operations [J]. Physicochemical Problems of Mineral Processing, 2013, 49(1): 121-131

[10] XuP, LiJ, LuoH, YeHong. Models for the particle size distribution of high-pressure grinding rolls based on fractal theory [J]. Journal of China University of Mining & Technology, 2016, 45(5): 1030-1037

[11] TangY, YinW, MaY, ChiX, HuangFa. Influence of comminuting methods on full-slime cyaniding of low grade gold ore [J]. The Chinese Journal of Nonferrous Metals, 2016, 26(2): 423-429

[12] HouY, YinW, YuG, YangC, GaiZ, ZhaoT, XiaoLi. Effect and mechanism of selective crushing and liberation of Mo-Cu ore from Bangpu crushed by high pressure grinding rolls [J]. The Chinese Journal of Nonferrous Metals, 2016, 26(7): 1538-1546

[13] OliveiraD M, SobralL G S, OlsonG J, OlsonS B. Acid leaching of a copper ore by sulphur-oxidizingmicroorganisms [J]. Hydrometallurgy, 2014, 147: 223-227

[14] BafghiM S, EmamiA H, ZakeriA. Effect of specific surface area of a mechanically activated chalcopyrite on its rate of leaching in sulfuric acid-ferric sulfate media [J]. Metallurgical and Materials Transactions B—Process Metallurgy and Materials Processing Science, 2013, 44(5): 1166-1172

[15] NororiM A, BritoP P R, HadlerK, ColeK, CilliersJ J. The effect of particle size distribution on froth stability in flotation [J]. Separation and Purification Technology, 2017, 84: 240-247

[16] RahimiM, AslaniM R, RezaiB. Influence of surface roughness on flotation kinetics of quartz [J]. Journal of Central South University, 2012, 19(5): 1206-1211

[17] KwakD H, KimM S. Flotation of algae for water reuse and biomass production: Role of zeta potential and surfactant to separate algal particles [J]. Water Science and Technology, 2015, 72(5): 762-769

[18] HanX, ChenX, YangX, BaiHai. Nanometer scale surface roughness measurement based on AFM [J]. Journal of Chongqing University (Nature Science Edition), 2007, 30(2): 5-8

[19] XieZ, JiangH, SunZ, YangQin. Direct AFM measurements of morphology and interaction force at solid−liquid interfaces between DTAC/CTAC and mica [J]. Journal of Central South University, 2016, 23(9): 2182-2190

[20] JaycockM J, ParfittG DChemistry of interfaces [M], 1981, Chichester, UK, Ellis Horwood Publications: 150−167

[21] HuYueMineral flotation [M], 2014, Changsha, Central South University Press: 124176

[22] ZengF, HuYongPractical technology of mineral processing [M], 2001, Xuzhou, China University of Mining and Technology Press: 1235

[23] WangJieEffect of ultra fine particle properties on the separation of ultra clean coal [D], 2016, Beijing, China University of Mining &Technology: 8087

[24] WangJ, LiH, ShuangC, LiA, WangC, HuangYu. Effect of pore structure on adsorption behavior of ibuprofen by magnetic anion exchange resins [J]. Microporous and Mesoporous Material, 2015, 210: 94-100

[25] XuL, HuY, WuH, TianJ, LiuJ, GaoZhi. Surface crystal chemistry of spodumene with different size fractions and implications for flotation [J]. Separation and Purification Technology, 2016, 169: 33-42

[26] HuY, GaoZ, SunW, LiuXiao. Anisotropic surface energies and adsorption behaviors of scheelite crystal [J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012, 415: 439-448

[27] ShiF N, MorrisonR, CervellinA, BurnF, MusaF. Comparison of energy efficiency between ball mills and stirred mills in coarse grinding [J]. Minerals Engineering, 2009, 22(78): 673-680

[28] WangLiNon-metallic mineral crushing engineering and equipment [M], 2011, Beijing, Chemical Industry Press: 1228

[29] HouY, YinW, DingY, YaoJ, LuoX, WangY, SunDa. A comparative study of grinding kinetics equation of the product produced by different comminuting process [J]. Nonferrous Metals Mineral Processing Section, 2014, 4: 70-74

[30] BruckardW J, SparrowG J, WoodcockJ T. A review of the effects of the grinding environment on the flotation of copper sulphides [J]. International Journal of Mineral Processing, 2011, 100(12): 1-13

[31] WatersonC N, TaskerP A, FarinatoR, NagarajD R, ShackletonN, MorrisonC A. A computational and experimental study on the binding of dithio ligands to sperrylite, pentlandite, and platinum [J]. Journal of Physical Chemistry C, 2016, 120(39): 22476-22488

[32] GersonA R, SmartR S C, LiJ, KawashimaN, WeedonD, TriffettB, BradshawD. Diagnosis of the surface chemical influences on flotation performance: Copper sulfides and molybdenite [J]. International Journal of Mineral Processing, 2012, 106–109: 16-30

[33] ZhangY, WangY, HuY, WenS, WangJin. First-principle theory calculation of electronic structures of scheelite, fluorite and calcite [J]. Chinese Journal of Rare Metals, 2014, 38(6): 1106-1113

[34] JinJ, GaoH, ChenX, PengY, MinFan. The flotation of aluminosilicate polymorphic minerals with anionic and cationic collectors [J]. Minerals Engineering, 2016, 99: 123-132

[35] TanX, HeF, ShangY, YinWan. Flotation behavior and adsorption mechanism of (1-hydroxy-2-methyl-2-octenyl) phosphonic acid to cassiterite [J]. Transactions of Nonferrous Metals Society of China, 2016, 26(9): 2469-2478

[36] GuG, ZhongSu. Electrochemical properties on surface of galena in grinding system and its influence on flotation [J]. Journal of Central South University, 2012, 39(1): 54-58