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黄金科学技术 ›› 2023, Vol. 31 ›› Issue (2): 340-348.doi: 10.11872/j.issn.1005-2518.2023.02.160

• 冶炼技术与装备研发 • 上一篇    下一篇

典型脉石矿物表面CN-吸附规律及润湿性研究

赵前飞1,2(),杨洪英1,2(),佟琳琳1,2   

  1. 1.东北大学多金属矿生态冶金重点实验室(教育部),辽宁 沈阳 110819
    2.东北大学冶金学院,辽宁 沈阳 110819
  • 收稿日期:2022-10-30 修回日期:2023-01-09 出版日期:2023-04-30 发布日期:2023-04-27
  • 通讯作者: 杨洪英 E-mail:zhaoqianfei0618@163.com;yanghy@smm.neu.edu.cn
  • 作者简介:赵前飞(1993-),女,内蒙古赤峰人,博士研究生,从事黄金冶炼渣资源化利用研究工作。zhaoqianfei0618@163.com
  • 基金资助:
    国家重点研发计划项目“黄金冶炼氰渣多相安全解离及稳定处置技术研究”(2018YFC1902002);“黄金冶炼氰渣毒害组份赋存规律、污染特性及降解机理研究”(2018YFC1902001)

Study on the Adsorption and Wettability of CN- on the Surface of Typical Gangue Minerals

Qianfei ZHAO1,2(),Hongying YANG1,2(),Linlin TONG1,2   

  1. 1.Key Laboratory for Ecological Metallurgy of Multimetallic Minerals (Ministry of Education), Northeastern University, Shenyang 110819, Liaoning, China
    2.School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
  • Received:2022-10-30 Revised:2023-01-09 Online:2023-04-30 Published:2023-04-27
  • Contact: Hongying YANG E-mail:zhaoqianfei0618@163.com;yanghy@smm.neu.edu.cn

摘要:

以石英、长石和方解石3种典型脉石矿物为吸附剂,NaCN为吸附质,考察了吸附时间和吸附剂添加量对CN-吸附效果的影响。同时,采用固着液滴接触角检测法分析了脉石矿物表面吸附CN-前后的润湿性差异,对吸附结果进行吸附动力学模型拟合。结果表明:石英、长石和方解石对CN-表现出不同程度的吸附性和选择性。通过动力学研究发现:石英和长石对CN-的吸附以物理吸附为主,CN-与方解石之间存在键合吸附作用。通过检测接触角发现:CN-的吸附导致脉石矿物表面亲水性增强,其中以石英表面接触角的降低最为明显。经过SBX浮选药剂作用后,脉石矿物表面接触角有所增加,但仍呈现亲水性质。说明氰化作用不会造成氰化渣浮选回收硫化矿时非目标矿物的跟浮,为实现氰化渣中矿物高效分离浮选提供了理论指导。

关键词: 石英, 长石, 方解石, 氰化浸出, 吸附行为, 接触角, 动力学

Abstract:

In recent years,with the continuous depletion of shallow mineral resources,there are many theoretical and practical studies on the recovery and utilization of sulfide ores in cyanide tailings.However,the existence of floatable gangue will hinder the recovery of sulfide ore in cyanide tailings.Therefore,it is very important to find out the adsorption mechanism of CN- on the surface of gangue minerals and the change of surface wettability to identify the cause of low flotation recovery of cyanide tailings.In this paper,three typical gangue minerals,quartz,feldspar and calcite,were used as adsorbent,and NaCN was used as adsorbent.The influence of adsorption time and amount of adsorbent on the adsorption effect of CN- were investigated.At the same time,the wettability difference before and after the adsorption of CN- on the surface of gangue minerals was analyzed by using the contact angle detection method of solid droplet,and the adsorption kinetic model was fitted for the adsorption results.The results show that quartz,feldspar and calcite exhibit different degrees of adsorption and selectivity for CN-.When the mineral dosage was 5 g and the contact time was 12 h,the adsorption rate of CN- tend to be stable.At this time,the adsorption rates of quartz,feldspar and calcite for CN- are 43.9%,58.0% and 43.6%,respectively.Through kinetic study,it is found that the adsorption of CN- by quartz and feldspar is mainly physical adsorption.There is binding adsorption between CN- and calcite.Finally,according to the contact angle detection,the adsorption of CN- resulted in the enhancement of the surface hydrophilicity of gangue minerals,and the surface contact angles of quartz,feldspar and calcite decreased from 38.5°,15.6° and 35.4° to 18.6°,14.4° and 20.6°.After the action of SBX flotation reagent,the surface contact angle of gangue minerals increase,but still showes hydrophilic properties.It shows that cyanidation will not cause the following flotation of non-target minerals when recovering sulfide ores from cyanide tailings flotation,which provides theoretical guidance for achieving efficient separation and flotation of metal sulfide ores in cyanide tailings.

Key words: quartz, feldspar, calcite, cyanide leaching, adsorption behavior, contact angle, dynamics model

中图分类号: 

  • TD97

图1

典型脉石矿物样品的X射线衍射图谱(a)石英;(b)长石;(c)方解石"

表1

脉石矿物主要成分质量分数"

矿物名称SiO2Al2O3K2OCaO其他成分
石英99.10---0.90
长石67.8315.3315.94-0.90
方解石0.05--56.2543.70

图2

CN-在脉石表面的吸附率与样品添加量的关系"

图3

CN-在脉石矿物表面的吸附特性与吸附时间的关系(a)石英;(b)方解石;(c)长石"

图4

氰化作用24 h前后脉石表面接触角变化图"

图5

脉石氰化浸出渣表面经浮选药剂作用后的接触角变化图"

图6

经0.1%NaCN作用24 h 前后的脉石矿物表面红外光谱图(a)石英;(b)长石;(c)方解石"

图7

CN-在脉石矿物表面吸附量的准一级动力学模型(a)、准二级动力学模型(b)、双常数模型(c)和Elovich 模型(d)线性回归拟合"

表2

脉石矿物CN-吸附动力学模型拟合参数"

脉石矿物

试验

Qe

准一级动力学模型准二级动力学模型双常数模型Elovich模型
Qek1R2Qek2R2R2R2
石英0.11590.10382.26560.97450.16770.76160.90450.95420.9419
长石0.09520.08552.45920.95430.13450.86280.68450.91550.8807
方解石0.08720.07882.54140.98340.12620.93250.83430.95270.9568
Ai G H, Yan H S, Qiu T S,et al,2018.Activating flotation of chalcopyrite using CuSO4 and H2O2 from the cyanide tailings[J].Physicochemical Problems of Mineral Processing,54(2):578-589.
Chen T T, Cabri L J, Dutrizac J E,2002. Characterizing gold in refractory sulfide gold ores and residues[J].JOM,54(12):20-22.
Deng Y J, Xu L, Lu H L,et al,2018.Direct measurement of the contact angle of water droplet on quartz in a reservoir rock with atomic force microscopy[J].Chemical Engineering Sci-ence,177:445-454.
Dizge N, Demirbas E, Kobya M,2009.Removal of thiocyanate from aqueous solutions by ion exchange[J].Journal of Ha-zardous Materials,166(2/3):1367-1376.
Dong K W, Xie F, Wang W,et al,2021.The detoxification and utilization of cyanide tailings:A critical review[J].Journal of Cleaner Production,302:126946.
Huang H, Fan Y F, Wang J W,et al,2013.Adsorption kinetics and thermodynamics of water-insoluble crosslinked β-cyclodextrin polymer for phenol in aqueous solution[J].Macromolecular Research,21(7):726-731.
Jannah Sulaiman N, Mansor A F, RahmanR A,et al,2019.Adsorption kinetics of cellulase and xylanase immobilized on magnetic mesoporous silica[J].Chemical Engineering and Technology,42(9):1825-1833.
Li J Y, Hua Q X, Niu J L,et al,2011.Adsorption equilibrium and kinetics of copper from aqueous solutions on steel slag[J].Advanced Materials Research,354/355:33-36.
Liu Shujie, Dai Shujuan, Li Pengcheng,2020.Effect of calcination on the interaction between quartz and gold cyanide[J].Non-Metallic Mines,43(1):68-72.
Mohammadnejad S, Provis J L, van Deventer J S J,2011.Gold sorption by silicates in acidic and alkaline chloride media[J].International Journal of Mineral Processing,100(3/4):149-156.
Rao S H, Deng Y J, Cai W J,et al,2021.Study of the contact angle of water droplet on the surface of natural K-feldspar with the combination of Ar+ polishing and atomic force microscopy scanning[J].Chemical Engineering Science,241:116705.
Song Yan, Yang Hongying, Tong Linlin,et al,2018.Experimental study on bacterial oxidation-cyanidation of a complex re-fractory gold mine in Gansu Province[J].Gold Science and Technology,26(2):241-247.
Sun Q Y, Yin W Z, Cao S H,et al,2019.Adsorption kinetics and thermodynamics of sodium butyl xanthate onto bornite in flotation[J].Journal of Central South University,26(11):2998-3007.
Taraba B, Bulavová P,2022.Second or pseudo-second-order model for adsorption kinetics?[J].Separation Science and Technology,57(10):1558-1562.
Xu S H, Cheng D B, Skinner W,et al,2020.Application of ToF-SIMS to predict contact angles of pyrite particles[J].Minerals Engineering,147:106168.
Yang X L, Huang X, Qiu T S,2015.Recovery of zinc from cyanide tailings by flotation[J].Minerals Engineering,84:100-105.
Yazdani M R, Tuutijärvi T, Bhatnagar A,et al,2016.Adsorptive removal of arsenic(V) from aqueous phase by feldspars:Kinetics,mechanism and thermodynamic aspects of adsorption[J].Journal of Molecular Liquids,214:149-156.
Yin Yulan, Chen Junhong, Xie Yan,et al,2022.Adsorption of F- on calcite surface and its effect on calcite surface properties[J].Bulletin of the Chinese Ceramic Society,41(8):2785-2791.
Yu Zheng, Wang Qiong, Huang Jun,et al,2022.Adsorption equilibrium,kinetics and mechanism studies of copper and nickel on coal-fired fly ash[J].Coal Processing and Comprehensive Utilization,(3):91-95.
Zhang X Q, Qin Y Z,2019.Contact angle hysteresis of a water droplet on a hydrophobic fuel cell surface[J].Journal of Colloid and Interface Science,545:231-241.
刘淑杰,代淑娟,李鹏程,2020.焙烧对石英与氰化金相互作用的影响[J].非金属矿,43(1):68-72.
宋言,杨洪英,佟琳琳,等,2018.甘肃某复杂难处理金矿细菌氧化——氰化实验研究[J].黄金科学技术,26(2):241-247.
殷玉兰,陈俊宏,谢燕,等,2022.F-在方解石表面的吸附及其对方解石表面性质的影响[J].硅酸盐通报,41(8):2785-2791.
于峥,王琼,黄俊,等,2022.粉煤灰对水中铜镍的吸附平衡、动力学及机理研究[J].煤炭加工与综合利用,(3):91-95.
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