N-羟乙基脂肪酸酰胺类捕收剂对低品位碳酸锰矿的浮选作用及机理
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摘要
设计并合成4种N-羟乙基脂肪酸酰胺类捕收剂,分别为N-羟乙基亚油酸酰胺(ELOA)、N-羟乙基油酸酰胺(EOA)、N-羟乙基蓖麻油酸酰胺(EROA)、N-羟乙基硬脂酸酰胺(ESOA)。考察4种捕收剂对湖南凤凰-花垣地区低品位碳酸锰矿的浮选行为。锰品位为11.49%的原矿,通过一次粗选工艺后,捕收能力顺序为:ELOA≈EOA>EROA>ESOA。其中,经过化合物ELOA和EOA浮选后的精矿中锰的品位分别为14.86%、14.69%,回收率分别为81.85%、83.54%。通过表面张力、Zeta电位、IR及量子化学计算探究捕收剂与锰矿之间的作用机理。结果表明:4种N-羟乙基脂肪酸酰胺类化合物和锰矿之间是化学吸附作用;捕收剂能明显地降低溶液的表面张力,降低矿物表面的动电位;分子中的负电荷主要集中在N,O原子上,分子与矿物表面的Mn具备多个作用位点及多种作用模式。
Four N-hydroxyethyl fatty acid amide collectors were designed and synthesized. They were N-hydroxyerhyl linoleic acid amide(ELOA), N-hydroxyerhyl oleic acid amid(EOA), N-hydroxyethyl ricinoleic acid amid(EROA) and N-hydroxyethyl stearic acid amide(ESOA). Using the raw ore with 11.49% manganese in Fenghuang-Huayuan, Hunan Province, through one rougher flotation, the connections of four collectors' abilities are ELOA≈EOA>EROA>ESOA. The concentrates with 14.86%, 14.69% in manganese grade and 81.85%, 83.54% in recovery rate are obtained after using ELOA and EOA, respectively. The interaction mechanism between collector and mineral was studied by the surface tension test, Zeta potential test, IR and quantum calculation. The results show that chemical adsorption occurred between collectors and the manganese ore. Besides, the collectors can reduce the surface tension and the Zeta potential. Moreover, the negative charge focuses on the nitrogen and oxygen atoms and there are a number of sites and a variety of action patterns between molecules and Mn on the mineral surface.
Four N-hydroxyethyl fatty acid amide collectors were designed and synthesized. They were N-hydroxyerhyl linoleic acid amide(ELOA), N-hydroxyerhyl oleic acid amid(EOA), N-hydroxyethyl ricinoleic acid amid(EROA) and N-hydroxyethyl stearic acid amide(ESOA). Using the raw ore with 11.49% manganese in Fenghuang-Huayuan, Hunan Province, through one rougher flotation, the connections of four collectors' abilities are ELOA≈EOA>EROA>ESOA. The concentrates with 14.86%, 14.69% in manganese grade and 81.85%, 83.54% in recovery rate are obtained after using ELOA and EOA, respectively. The interaction mechanism between collector and mineral was studied by the surface tension test, Zeta potential test, IR and quantum calculation. The results show that chemical adsorption occurred between collectors and the manganese ore. Besides, the collectors can reduce the surface tension and the Zeta potential. Moreover, the negative charge focuses on the nitrogen and oxygen atoms and there are a number of sites and a variety of action patterns between molecules and Mn on the mineral surface.
引文
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[18]FRANCISCO P,REGINA M D,TITO T,ARMANDO D.Determination of anionic surface active agents using silica coated magnetite nanoparticles modified with cationic surfactant aggregates[J].Journal of Chromatograph A,2013,1299(7):25-32.
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[22]KLOPMAN G.Chemical reactivity and the concept of charge-and frontier-controlled reactions[J].Journal of the American Chemical Society,2002,90(2):223-34.
[23]LIU Run-qing,SUN Wei,HU Yue-hua,WANG Dian-zuo.New collectors for the flotation of unactivated marmatite[J].Minerals Engineering,2010,23(2):99-103.
[2]毛莹博,方建军,文书明,张铁民,王珊,文娅,蒋太国.碳酸锰矿选矿工艺研究进展[J].昆明理工大学学报(自然科学版),2014,39(6):25-31.MAO Ying-bo,FANG Jian-jun,WEN Shu-ming,ZHANGTie-min,WANG Shan,WEN Ya,JIANG Tai-guo.Research progress in process technology for manganese carbonate ore[J].Journal of Kunming University of Science&Technology,2014,39(6):25-31.
[3]滕青,冯雅丽,李浩然,杨志超.十二胺浮选分离菱锰矿与方解石及其机理[J].中国有色金属学报,2014,24(10):2676-2683.TENG Qing,FENG Ya-li,LI Hao-ran,YANG Zhi-chao.Dodecylamine flotation separation of rhodochrosite from calcite and its mechanism[J].The Chinese Journal of Nonferrous Metals,2014,24(10):2676-2683.
[4]危流永,罗海燕,刘子帅,蔡振波.钛铁矿浮选研究现状及进展[J].现代矿业,2014,539(3):20-24.WEI Liu-yong,LUO Hai-yan,LIU Zi-shuai,CAI Zhen-bo.Research status and development for ilmenite flotation[J].Modern Mining,2014,539(3):20-24.
[5]阮耀阳,肖春桥,张泽强,罗惠华,周芳,池汝安.磷矿浮选药剂研究进展[J].武汉工程大学学报,2015,37(5):1-5.RUAN Yao-yang,XIAO Chun-qiao,ZHANG Ze-qiang,LUOHui-hua,ZHOU Fang,CHI Ru-an.Review of flotation reagent for phosphate[J].Journal of Wuhan Institute of Technology,2015,37(5):1-5.
[6]潘志权,沈博玮.基于脂肪酸的磷矿捕收剂的研制与应用进展[J].武汉工程大学学报,2016,38(1):1-9.PAN Zhi-quan,SHEN Bo-wei.Research and application progress in flotation collectors based on fatty acids for phosphorus ores[J].Journal of Wuhan Institute of Technology,2016,38(1):1-9.
[7]罗惠华,饶欢欢,李成秀.新型胶磷矿复合脂肪酸阴离子型捕收剂的合成与浮选性能研究[J].现代矿业,2016,561:67-70.LUO Hui-hua,RAO Huan-huan,LI Cheng-xiu,CHEN Bing-yan,LIU Lian-kun,ZHU Dao-peng.Synthesis and flotation performance of a new composite fatty acid anionic collophanite collector[J].Modern Mining,2016,561:67-70.
[8]邹义坤,陈婷,周凤,严春杰,杨祥,葛文.Tween-80对低品位碳酸锰矿的浮选增效作用[J].中国有色金属学报,2015,25(9):2551-2557.ZOU Yi-kun,CHEN Ting,ZHOU Feng,YAN Chun-jie,YANGXiang,GE Wen.Synergistic effect of Tween-80 on flotation of low grade manganese carbonate[J].The Chinese Journal of Nonferrous Metals,2015,25(9):2551-2557.
[9]ZHOU Feng,CHEN Tao,YAN Chun-jie,LIANG Huan,CHENTing,LI Dan,WANG Qun-ying.The flotation of low-grade manganese ore using a novel linoleate hydroxamic acid[J].Colloids&Surfaces A,Physicochemical&Engineering Aspects,2015,466:1-9.
[10]RAIS F,BAATI R,DAMAK N,KAMOUN A,CHAAHOUNIM.The use of a eutectic mixture of olive pomace oil fatty amides to easily prepare sulfated amides applied as lime soap dispersants[J].Journal of Oil&Fat Industries,2008,85(9):869-877.
[11]KOLANCILAR H.Preparation of laurel oilalkanolamide from laurel oil[J].Journal of Oil&Fat Industries,2004,81(6):597-598.
[12]ASTARITA G,GIACOMO B D,GAETANI S,OVEISI F,COMPTON T R,RIVARA S,TARIZIA G,MOR M,PIOMELLID.Pharmacological characterization of hydrolysis-resistant analogs of oleoylethanolamide with potent anorexiant properties[J].Journal of Pharmacology&Experimental Therapeutics,2006,318(2):563-570.
[13]GIBSON S.Process for the preparation of saturated or unsaturated primary fatty amines:US,US 20090105504 A1[P].2009.
[14]JIANG Yun-ren,Li Xin-xin,FENG Rui,CHEN Dan,LIJun-chuan.Novel alkyl bis(hydroxycarbamoyl)propionic acids for flotation separation of diaspore against aluminosilicate minerals[J].Separation&Purification Technology,2012,87(10):135-141.
[15]JIANG Yun-ren,WEI Li,FENG Rui.Preparation and performance of 4-alkyl-4,4-bis(hydroxycarbamoyl)carboxylic acid for flotation separation of diaspore against aluminosilicates[J].Minerals Engineering,2011,24(14):1571-1579.
[16]KOWALCZUK P B,DRZYMALA J.Surface flotation of particles on liquids.Principles and applications[J].Colloids&Surfaces A,Physicochemical&Engineering Aspects,2012,393(1):81-5.
[17]ZHOU Feng,YAN Chun-jie,WANG Hong-quan,SUN Qi,WANG Qun-ying,ALSHAMERI A.Flotation behavior of four C18 hydroxamic acids as collectors of rhodochrosite[J].Minerals Engineering,2015,78:15-20.
[18]FRANCISCO P,REGINA M D,TITO T,ARMANDO D.Determination of anionic surface active agents using silica coated magnetite nanoparticles modified with cationic surfactant aggregates[J].Journal of Chromatograph A,2013,1299(7):25-32.
[19]ELIF C S,MEHMET M.Equilibrium and kinetic adsorption of drugs on bentonite of surface active agents effect[J].Applied Clay Science,2014,101(11):381-389.
[20]MARINOVA K G,ALARGOVA R G,DENKOV N D,VELEV OD,PETSEV D N,IVANOV I B,BORWANKAR R P.Charging of oil-water interfaces due to spontaneous adsorption of hydroxyl ions[J].Lagmuir,1996,12(8):2045-2051.
[21]NASSRALLAH N,BOUGHRIET A,GENGEMBRE L,ABOUKAIS A.Manganese(II)/vaterite/water systems spectroscopic and thermodynamic study[J].Journal of the Chemical Society Faraday Transactions,1998,94(94):2399-2405.
[22]KLOPMAN G.Chemical reactivity and the concept of charge-and frontier-controlled reactions[J].Journal of the American Chemical Society,2002,90(2):223-34.
[23]LIU Run-qing,SUN Wei,HU Yue-hua,WANG Dian-zuo.New collectors for the flotation of unactivated marmatite[J].Minerals Engineering,2010,23(2):99-103.