组合捕收剂及海藻酸钠在白钨矿和方解石浮选分离中的作用及机理
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摘要
通过浮选试验、吸附量测试和XPS分析,研究油酸钠和聚醚P123组合捕收剂以及抑制剂海藻酸钠在白钨矿与方解石浮选分离中的作用,考察钙离子对白钨矿与方解石浮选分离的影响,并分析海藻酸钠对方解石的抑制作用机理。结果表明:与常用捕收剂油酸钠相比,油酸钠和聚醚P123组合捕收剂提高白钨矿的浮选回收率,并降低方解石的浮选回收率,但仅用捕收剂在试验所研究的pH范围内无法实现白钨矿与方解石的浮选分离。抑制剂海藻酸钠在白钨矿及方解石表面均能被吸附,但在方解石表面的吸附量显著高于在白钨矿表面的吸附量,从而对方解石具有选择性抑制作用。钙离子的存在对方解石和白钨矿的浮选影响较小,对海藻酸钠的抑制行为也没有影响,使用海藻酸钠做抑制剂能够实现白钨矿与方解石的浮选分离。XPS分析表明海藻酸钠作用后方解石表面钙原子的特征吸收峰发生明显偏移,说明海藻酸钠主要是通过与方解石表面的钙离子发生化学反应而吸附在方解石表面。
The role of combined collector and depressant sodium alginate in the flotation separation of scheelite from calcite was studied, the effect of calcium ion on the separation of scheelite and calcite was analyzed, and the depression mechanism of sodium alginate on calcite was discussed. The results show that, compared with the commonly used collector sodium oleate, the combine use of sodium oleate and polyether P123 improves the recovery of scheelite while decreases the recovery of calcite, but the flotation separation of scheelite and calcite can not be achieved by using collector only. The depressant sodium alginate can be adsorbed on the surface of both scheelite and calcite, but the adsorption amount on calcite surface is greater than that on scheelite surface. So sodium alginate has selective depression effect on calcite. The presence of calcium ion has little effect on the flotation of scheelite and calcite, and also does not influence the depression effect of sodium alginate. The flotation separation of scheelite and calcite can be achieved using sodium alginate as depressant. XPS analysis shows that the characteristic adsorption peak of calcium ion on calcite surface displaces obviously after interacting with sodium alginate, which illustrates that the adsorption of sodium alginate on calcite surface mainly through chemical reaction of sodium alginate with calcium calcite surface.
The role of combined collector and depressant sodium alginate in the flotation separation of scheelite from calcite was studied, the effect of calcium ion on the separation of scheelite and calcite was analyzed, and the depression mechanism of sodium alginate on calcite was discussed. The results show that, compared with the commonly used collector sodium oleate, the combine use of sodium oleate and polyether P123 improves the recovery of scheelite while decreases the recovery of calcite, but the flotation separation of scheelite and calcite can not be achieved by using collector only. The depressant sodium alginate can be adsorbed on the surface of both scheelite and calcite, but the adsorption amount on calcite surface is greater than that on scheelite surface. So sodium alginate has selective depression effect on calcite. The presence of calcium ion has little effect on the flotation of scheelite and calcite, and also does not influence the depression effect of sodium alginate. The flotation separation of scheelite and calcite can be achieved using sodium alginate as depressant. XPS analysis shows that the characteristic adsorption peak of calcium ion on calcite surface displaces obviously after interacting with sodium alginate, which illustrates that the adsorption of sodium alginate on calcite surface mainly through chemical reaction of sodium alginate with calcium calcite surface.
引文
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[15]FENG B,LUO X,WANG J,WANG P.The flotation separation of scheelite from calcite using acidified sodium silicate as depressant[J].Minerals Engineering,2015,80:45-49.
[16]邱廷省,宋宜富,邱仙辉,李晓波.白钨矿浮选体系中大分子有机抑制剂的抑制性能[J].中国有色金属学报,2017,27(7):1527-1534.QIU Ting-sheng,SONG Yi-fu,QIU Xian-hui,LI Xiao-bo.Performance of organic depressants in scheelite flotation system[J].Chinese Journal of Nonferrous Metals,2012,22(5):1448-1454.
[17]ZHANG Y,LI Y,CHEN R,WANG Y,DENG J,LUO X.Flotation separation of scheelite from fluorite using sodium polyacrylate as inhibitor[J].Minerals,2017,7(6):102-114.
[18]CHEN W,FENG Q,ZHANG G,YANG Q,ZHANG C,XU F.The flotation separation of scheelite from calcite and fluorite using dextran sulfate sodium as depressant[J].International Journal of Mineral Processing,2017,169:53-59.
[19]ZHANG Y Z,GU G H,WU X B,ZHAO K L.Selective depression behavior of guar gum on talc-type scheelite flotation[J].International Journal of Minerals,Metallurgy,and Materials,2017,24(8):857-862.
[20]CHEN W,FENG Q,ZHANG G,YANG Q.Investigations on flotation separation of scheelite from calcite by using a novel depressant:Sodium phytate[J].Minerals Engineering,2018,126:116-122.
[2]方浩,艾光华,刘艳飞.白钨矿选矿工艺研究现状及发展趋势[J].中国钨业,2016,31(3):27-31.FANG Hao,AI Guang-hua,LIU Yan-fei.Research status and development trend of scheelite ore beneficiation process[J].Chinese Tungsten Industry,2016,31(3):27-31.
[3]胡红喜,周晓彤,邱显扬,何晓娟.白钨矿浮选药剂及其应用[J].中国钨业,2010,25(4):19-22.HU Hong-xi,ZHOU Xiao-tong,QIU Xian-yang,HE Xiao-juan.On the application of floatation reagents of scheelite[J].Chinese Tungsten Industry,2016,31(3):27-31.
[4]赵磊,邓海波,李仕亮.白钨矿浮选研究进展[J].现代矿业,2009,25(9):15-17.ZHAO Lei,DENG Hai-bo,LI Shi-liang.Research development of scheelite flotation[J].Modern Mining,2009,25(9):15-17.
[5]徐晓萍,梁冬云,喻连香,林日孝,曾庆军,管则皋,张先华.江西某大型白钨矿钨的选矿试验研究[J].中国钨业,2007,22(2):23-26.XU Xiao-ping,LIANG Dong-yun,YU Lian-xiang,LIN Ri-xiao,ZENG Qing-jun,GUAN Ze-gao,ZHANG Xian-hua.On the mineral processing technique for a large-scaled scheelite mine[J].China Tungsten Industry,2007,22(2):23-26.
[6]高湛伟,郑灿辉,张子瑞,辛百军.白钨矿常温浮选试验研究[J].中国钨业,2010,25(6):18-20.GAO Zhang-wei,ZHENG Can-hui,ZHANG Zi-rui,XINBai-jun.Experimental study of scheelite flotation at room temperature[J].China Tungsten Industry,2010,25(6):18-20.
[7]温德新,伍红强,夏青.某低品位难选白钨矿常温浮选试验研究[J].有色金属科学与工程,2011,2(3):51-54.WEN De-xin,WU Hong-qiang,XIA Qing.The flotation of a low-grade and refractory scheelite at room temperature[J].Nonferrous Metals Science&Engineering,2011,2(3):51-54.
[8]黄万抚,肖良.钨矿选矿工艺研究进展[J].有色金属科学与工程,2013,4(1):57-61.HUANG Wan-fu,XIAO Liang.Research advances of tungsten processing technologies[J].Nonferrous Metals Science&Engineering,2011,2(3):51-54.
[9]高玉德,邱显扬,韩兆元.羟肟酸浮选白钨矿的机理[J].中国有色金属学报,2015,25(5):1339-1344.GAO Yu-de,QIU Xian-yang,HAN Zhao-yuan.Flotation mechanism of scheelite with hydroxamic acid[J].Chinese Journal of Nonferrous Metals,2015,25(5):1339-1344.
[10]杨帆,杨耀辉,刘红尾,孙伟.新型季铵盐捕收剂对白钨矿和方解石的常温浮选分离[J].中国有色金属学报,2012,22(5):1448-1454.YANG Fan,YANG Yao-hui,LIU Hong-wei,SUN Wei.Flotation separation of scheelite and calcite at ambient temperature using new quaternary ammonium salt as collector[J].Chinese Journal of Nonferrous Metals,2012,22(5):1448-1454.
[11]WANG J,GAO Z,GAO Y,HU Y,SUN W.Flotation separation of scheelite from calcite using mixed cationic/anionic collectors[J].Minerals Engineering,2016,98:261-263.
[12]GAO Z,BAI D,SUN W,CAO X,HU Y.Selective flotation of scheelite from calcite and fluorite using a collector mixture[J].Minerals Engineering,2015,72:23-26.
[13]GAO Y,GAO Z,SUN W,HU Y.Selective flotation of scheelite from calcite:A novel reagent scheme[J].International Journal of Mineral Processing,2016,154(154):10-15.
[14]孙伟,宋韶博.水玻璃及其在白钨矿浮选中的应用和分析[J].中国钨业,2013(4):22-25.SUN Wei,SONG Shao-bo.The application and analysis of water glass in the scheelite flotation[J].Chinese tungsten industry,2013(4):22-25.
[15]FENG B,LUO X,WANG J,WANG P.The flotation separation of scheelite from calcite using acidified sodium silicate as depressant[J].Minerals Engineering,2015,80:45-49.
[16]邱廷省,宋宜富,邱仙辉,李晓波.白钨矿浮选体系中大分子有机抑制剂的抑制性能[J].中国有色金属学报,2017,27(7):1527-1534.QIU Ting-sheng,SONG Yi-fu,QIU Xian-hui,LI Xiao-bo.Performance of organic depressants in scheelite flotation system[J].Chinese Journal of Nonferrous Metals,2012,22(5):1448-1454.
[17]ZHANG Y,LI Y,CHEN R,WANG Y,DENG J,LUO X.Flotation separation of scheelite from fluorite using sodium polyacrylate as inhibitor[J].Minerals,2017,7(6):102-114.
[18]CHEN W,FENG Q,ZHANG G,YANG Q,ZHANG C,XU F.The flotation separation of scheelite from calcite and fluorite using dextran sulfate sodium as depressant[J].International Journal of Mineral Processing,2017,169:53-59.
[19]ZHANG Y Z,GU G H,WU X B,ZHAO K L.Selective depression behavior of guar gum on talc-type scheelite flotation[J].International Journal of Minerals,Metallurgy,and Materials,2017,24(8):857-862.
[20]CHEN W,FENG Q,ZHANG G,YANG Q.Investigations on flotation separation of scheelite from calcite by using a novel depressant:Sodium phytate[J].Minerals Engineering,2018,126:116-122.