新型高效活化剂X-45对铁闪锌矿浮选行为影响的研究

发布时间：2018-04-19 18:02

本文选题：铁闪锌矿 + 活化剂　；参考：《昆明理工大学》2017年硕士论文

【摘要】：对含锌的多金属矿石,传统的分选工艺采用CuSO4作为锌矿物的活化剂,但是CuSO4对矿物中的硫化铁矿物也能起到活化作用,即其活化的选择性不强,从而就会影响选矿所得的锌精矿及其一些有价的稀贵金属的选别指标,进而影响选厂的效益。因此,研制锌矿物的新型高效活化剂一直以来都是国内外学者研究的热点之一,此项研究对于锌矿物的活化浮选具有重要的理论意义与实际价值。童雄教授团队经多年研究,开发出了新型高效的铁闪锌矿活化剂X-43,在低碱条件下此新型高效活化剂可实现针对性的活化铁闪锌矿,而对铁闪锌矿选矿指标不利的其他矿物有抑制作用。该铁闪锌矿的新型高效活化剂已成功取代CuSO4,在华联锌铟股份有限公司新田选厂实现了工业化应用。铁闪锌矿中含铁量的不同,其自身性质也会不同,为了能让该新型高效活化剂的活化能力适应不同的铁闪锌矿,童雄教授团队经过研究对此新型高效活化剂成分升级,研制出新一代新型高效活化剂X-45。为了验证X-45能否适应于不同铁闪锌矿的活化浮选及是否可以替代原新田选厂采用的铁闪锌矿的活化剂X-43,本文针对上述问题,以铁闪锌矿活化剂硫酸铜和X-45为主要研究对象,分别进行了纯矿物试验、人工混合纯矿物试验和实际矿石试验,并采用XRD、接触角、疏水聚团、化学分析等手段进行了分析检测,通过以上试验及检测可以得出一下结论:1.纯矿物试验结果可知,在最佳药剂制度条件下,X-45对铁闪锌矿的活化效果要强于硫酸铜;2.人工混合纯矿物试验结果可知,X-45对铁闪锌矿的活化效果优于硫酸铜且其选择性较好;3.实际矿石试验证明,X-45对铁闪锌矿的活化效果优于硫酸铜和X-43。此外,接触角测定、疏水聚团分析都再次证明:新型高效铁闪锌矿活化剂X-45的活化能力及选择性都要优于硫酸铜。针对华联锌铟股份有限公司新田选厂的原矿和选铜尾矿,参照选厂的磨矿细度、选矿流程和药剂制度,对选厂原矿采用“一粗-一扫-三精”(优先选铜作业)和“二粗-一扫-四精-一精扫”(活化选锌作业)的开路流程,保持选铜作业试验条件不变,采用新型高效活化剂X-45作为选锌作业的活化剂,可获得锌精矿品位和累计回收率分别为45.55%和94.22%;采用硫酸铜作为选锌作业的活化剂,可获得锌精矿品位和累计回收率分别为43.63%和90.05%。对选厂铜尾矿采用“一粗-二扫-三精选锌作业”的闭路工艺流程,采用新型高效活化剂X-45作为选锌作业的活化剂,可获得锌精矿品位和回收率分别为48.02%和98.11%;采用硫酸铜作为选锌作业的活化剂,可获得锌精矿品位和回收率分别为46.01%和98.15%。通过以上试验证明X-45对铁闪锌矿的活化更具有优势。
[Abstract]:For zinc bearing polymetallic ores, CuSO4 is used as activator of zinc minerals in traditional separation process, but CuSO4 can also activate iron sulfide minerals, that is, its selectivity is not strong.This will affect the concentration index of zinc concentrate and some valuable precious metals, and then affect the efficiency of the concentrator.Therefore, the development of new high efficient activators for zinc minerals has always been one of the hot topics of domestic and foreign scholars. This research has important theoretical and practical value for activated flotation of zinc minerals.After many years of research, Professor Tong Xiong's team has developed a new type of high efficiency sphalerite activator X-43, which can be used to activate sphalerite in low alkali condition.Other minerals which are unfavorable to the mineral concentration index of marmatite are inhibited.The new high efficiency activator of sphalerite has successfully replaced CuSO _ 4 and has been applied in Xintian separation plant of Hualian Zinc and Indium Co., Ltd.In order to adapt the activation ability of the new high efficiency activator to different iron sphalerite, Professor Tong Xiong's team has studied and upgraded the composition of the new high efficiency activator.A new generation of high efficient activator X-45 was developed.In order to verify whether X-45 can be adapted to the activated flotation of different sphalerite and whether it can replace the activator X-43 used in the former Xintian dressing Plant, the main research object of this paper is copper sulfate and X-45, which are active agents of sphalerite.The pure mineral test, artificial mixed pure mineral test and actual ore test were carried out, and XRD, contact angle, hydrophobic agglomeration and chemical analysis were used to analyze and detect.The results of pure mineral test show that the activation effect of the iron sphalerite is better than that of cupric sulfate 2 under the optimum reagent condition.The experimental results of artificial mixed pure minerals show that the activation effect of ZX-45 on sphalerite is better than that of copper sulfate and its selectivity is better than that of copper sulfate.The actual ore tests show that the activation effect of X-45 on sphalerite is superior to that of copper sulfate and X-43.In addition, the contact angle measurement and hydrophobic cluster analysis all proved that the activation ability and selectivity of a new type of high efficient sphalerite activator X-45 were better than that of copper sulfate.According to the raw ore and copper tailings of Xintian separation plant of Hualian Zinc and Indium Co., Ltd., the grinding fineness, the processing process and the reagent system of the dressing plant are consulted.The open-circuit process of "one coarse, one sweep and three fine" (preferential copper separation) and "two coarse, one sweep, four fine and one fine sweep" (activated zinc separation operation) is adopted in the raw ore of the separation plant, and the test conditions of copper separation operation are kept unchanged.The grade and cumulative recovery of zinc concentrate were 45.55% and 94.22% respectively when X-45 was used as activator of zinc separation, and 43.63% and 90.05% of zinc concentrate grade and accumulative recovery were obtained by using copper sulfate as activator.The closed circuit process of "one coarse, two sweep and three cleaning zinc" was adopted for copper tailings in the dressing plant, and a new high efficiency activator X-45 was used as the activator for zinc separation.The grade and recovery of zinc concentrate were 48.02% and 98.11%, respectively, and the grade and recovery of zinc concentrate were 46.01% and 98.15%, respectively.It is proved that X-45 has more advantages on the activation of sphalerite.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD923;TD952

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