四种有机抑制剂对倍半氧化物的抑制性能
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摘要
采用一粗一精正浮选工艺,研究了小分子有机酸(ST-1)、阴离子淀粉(AS)、萘磺酸盐甲醛缩合物(NFSC)、羧甲基纤维素钠(CMC)4种有机抑制剂对胶磷矿中类型为水云母、褐铁矿的倍半氧化物的抑制性能.结果表明,NFSC用量为0.35 kg/t时,磷精矿品位达到31.36%,回收率在80.22%,倍半氧化物的质量分数降低到3.48%;CMC用量为0.20 kg/t时,磷精矿中倍半氧化物的质量分数可以降至3.20%,但磷精矿回收率仅为26.24%;当分别使用AS、ST-1作为抑制剂时,精矿中倍半氧化物的质量分数变化都不明显.因此,NFSC在分离倍半氧化物脉石与磷矿物时抑制性能最好;CMC对倍半氧化物脉石有很强的抑制性,但选择性差;ST-1、AS作为抑制剂对倍伴氧化物的抑制作用较弱.
The performance of four organic depressants,low-molecule organic acid(ST-1),anionic starch(AS),naphthalene sulfonate formaldehyde condensate(NFSC)and sodium carboxymethyl cellulose(CMC)were explored on sesquioxide(hydromica and pyrite) in a collophanite by using roughing-cleaning directflotation method. The results show that the grade and recovery of phosphate concentrate are 31.36% and 80.22%respectively,and the mass fraction of sesquioxide reduces to 3.48% at 0.35 kg/t of NFSC. The recovery ofphosphate concentrate is only 26.24%,and the mass fraction of sesquioxide reduces to 3.20% at 0.20 kg/t ofCMC. The AS and ST-1 have not significant effect on the mass fraction of sesquioxide in phosphate concentrate.In conclusion,NFSC has the best depressing performance in separating collophanite and sesquioxide ganguemineral. CMC has a strong depressing on sesquioxide gangue mineral,but it shows poor selectivity. ST-1 and AShave poor depressing in sesquioxide gangue mineral.
The performance of four organic depressants,low-molecule organic acid(ST-1),anionic starch(AS),naphthalene sulfonate formaldehyde condensate(NFSC)and sodium carboxymethyl cellulose(CMC)were explored on sesquioxide(hydromica and pyrite) in a collophanite by using roughing-cleaning directflotation method. The results show that the grade and recovery of phosphate concentrate are 31.36% and 80.22%respectively,and the mass fraction of sesquioxide reduces to 3.48% at 0.35 kg/t of NFSC. The recovery ofphosphate concentrate is only 26.24%,and the mass fraction of sesquioxide reduces to 3.20% at 0.20 kg/t ofCMC. The AS and ST-1 have not significant effect on the mass fraction of sesquioxide in phosphate concentrate.In conclusion,NFSC has the best depressing performance in separating collophanite and sesquioxide ganguemineral. CMC has a strong depressing on sesquioxide gangue mineral,but it shows poor selectivity. ST-1 and AShave poor depressing in sesquioxide gangue mineral.
引文
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[15]吴旭日.萘磺酸盐甲醛缩合物钠盐的结构表征与缩合工艺研究[D].杭州:浙江大学,2006.
[2]贾辉,卢毅屏,钟宏,等.金属矿浮选有机抑制剂的研究进展[J].应用化工,2014,43(2):353-356,362.JIA H,LU Y P,ZHONG H,et al.Research progress on organic depressants in metal ore flotation[J].Applied Chemical Industry,2014,43(2):353-356,362.
[3]王淀佐,白世斌.浮选有机抑制剂的结构与性能[J].有色金属,1983,35(2):47-54.WANG D Z,BAI S B.Structure and properties of organic inhibitors of flotation[J].Nonferrous Metals,1983,35(2):47-54.
[4]张剑锋,胡岳华,邱冠周.浮选有机抑制剂研究的进展[J].有色矿冶,2000,16(2):14-17.ZHANG J F,HU Y H,QIU G Z.Progress of studying on organic flotation depressant[J].Non-Frrrous Mining and Metallurgy,2000,16(2):14-17.
[5]吴卫国,孙传尧,朱永楷.有机螯合剂对活化石英的抑制及其作用机理[J].金属矿山,2007(2):33-37.WU W G,SUN C X,ZHU Y K.Depression of organic chelating agents on activated quartz and its mechanism[J].Metal Mine,2007(2):33-37.
[6]张亚辉,熊学广,张家,等.用柠檬酸和六偏磷酸钠降低金川铜镍精矿镁含量[J].金属矿山,2013(5):67-70,74.ZHANG Y H,XIONG X G,ZHANG J,et al.Decreasing the content of Mg O in Jinchuan copper-nickel concentrate by citric acid and(Na PO3)6[J].Metal Mine,2013(5):67-70,74.
[7]顾帼华,朴正杰,邹毅仁,等.阴离子淀粉对铝硅酸盐矿物浮选的影响及机理研究[J].矿冶工程,2010,30(2):28-30,34.GU G H,PIAO Z J,ZOU Y R,et al.Effect of anionic starch on floatability of aluminosilicate minerals and mechanism thereof[J].Mining and Metallurgical,2010,30(2):28-30,34.
[8]刘安.胶磷矿浮选中改性淀粉抑制机理研究[D].武汉:武汉工程大学,2012.
[9]王烨,唐敏.淀粉与氧化铁矿物的应用及其作用机理的研究进展[J].矿产综合利用,2015(5):17-22.WANG Y,TANG M.Development of starch application and investigation on mechanism between starch and oxidized iron ore[J].Muitipurpose Utilization of Mineral Resources,2015(5):17-22.
[10]汪桂杰,孙伟.几种改性淀粉对赤铁矿和石英抑制效果的研究[J].矿业研究与开发,2013,33(5):35-39.WANG G J,SUN W.Study on depression effect of several modified starches on hematite and qurtz[J].Mining Research and Development,2013,33(5):35-39.
[11]潘高产,卢毅屏,冯其明,等.羧甲基纤维素钠对滑石可浮性及分散性的影响[J].金属矿山,2010(6):96-100.PAN G C,LU Y P,FENG Q M,et al.Effect of sodium carboxymethyl cellulose on flotability and disperion of talc[J].Metal Mine,2010(6):96-100.
[12]冯博,汪惠惠,王鹏程,等.羧甲基纤维素的应激反应及对滑石表面疏水性的影响[J].有色金属工程,2015,5(3):54-58.FENG B,WANG H H,WANG P C,et al.Stimulus response of CMC and its influence on talc hydrophobic[J].Nonferrous Metals Engineering,2015,5(3):54-58.
[13]曹建,姬俊梅.羧甲基纤维素钠在铌矿物选别中抑制行为的研究[J].矿业快报,2006,25(11):24-26.CAO J,JI J M.Research on depressing behavior of carboxymrthyl cellulose in beneficiation of niobium minerals[J].Express Information of Mining Industry,2006,25(11):24-26.
[14]邵绪新,郭梦熊,廖木真.胶磷矿浮选中萘磺酸盐甲醛缩合物的抑制机理研究[J].有色金属,1992(1):17-22.SHAO X X,GUO M X,LIAO M Z.Study on inhibition mechanism of naphthalene sulfonate formaldehyde condensate in the flotation of collophanite[J].Nonferrous Metals,1992(1):17-22.
[15]吴旭日.萘磺酸盐甲醛缩合物钠盐的结构表征与缩合工艺研究[D].杭州:浙江大学,2006.