Utilization of Flotation Wastewater for Separation of Chalcopyrite and Molybdenite by Selective Surface Passivation

被引:0
|
作者
Guo, Yuwu [1 ]
Gu, Guohua [1 ]
Zhang, Yisheng [1 ]
Li, Qingke [1 ]
Liao, Su [1 ]
Wang, Yanhong [1 ]
机构
[1] Cent South Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China
基金
中国国家自然科学基金;
关键词
chalcopyrite; molybdenite; flotation wastewater; surface passivation; flotation separation; SCHEELITE RECOVERY; FERRIC ION; DISSOLUTION; IMPROVEMENT; OXIDATION; PYRITE; REUSE;
D O I
10.3390/min14040388
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
In the flotation separation process of a Cu-Mo-W polymetallic ore, the wastewater from the scheelite cleaning flowsheet contains large numbers of residual flocculants and metal ions, and the separation of chalcopyrite and molybdenite requires a large number of environmentally harmful depressants. Therefore, it is necessary to find new methods to reduce the environmental and cost pressures of wastewater treatment and the use of depressants. In this work, the flotation wastewater from the scheelite cleaning flowsheet for the separation of chalcopyrite and molybdenite by selective surface passivation was investigated for the first time. Flotations of single minerals and artificially mixed minerals with or without immersion pretreatment in the presence and absence of aeration were performed. The results showed that pulp pH had no effect on the flotation of either mineral, and a molybdenite recovery of 93.22% with a chalcopyrite recovery of 10.77% was achieved under the conditions of 10 days of immersion pretreatment with aeration, 350 mg/L of kerosene, and 100 mg/L of MIBC. By combining the electrochemical cyclic voltammetry analysis and characterization by XRD and SEM, the selective surface passivation mechanism of chalcopyrite was discussed, which could be due to the coverage of the insoluble oxidation products, especially jarosite. This work has simultaneously achieved the depressant-free flotation separation of molybdenite and chalcopyrite and the reuse of scheelite flotation wastewater, which is of great significance for environmental protection and cost saving.
引用
收藏
页数:13
相关论文
共 50 条
  • [41] Depressants for separation of chalcopyrite and molybdenite: Review and prospects
    Hao, Jiamei
    Liu, Jian
    Yu, Yunlong
    Gao, Hulin
    Qin, Xiaoyan
    Bai, Xu
    MINERALS ENGINEERING, 2023, 201
  • [42] Adsorption performance and mechanism of eco-friendly and efficient depressant galactomannan in flotation separation of chalcopyrite and molybdenite
    Wang, Xun
    Gao, Peng
    Liu, Jie
    Gu, Xiaotian
    Han, Yuexin
    JOURNAL OF MOLECULAR LIQUIDS, 2021, 326
  • [43] Effect of dextrin on flotation separation and surface properties of chalcopyrite and arsenopyrite
    Dong, Jingshen
    Liu, Quanjun
    Subhonqulov, S. H.
    WATER SCIENCE AND TECHNOLOGY, 2021, 83 (01) : 152 - 161
  • [44] The Flotation Separation of Chalcopyrite and Galena: Crystal, Surface, Floatability and Reagents
    Zhang, Xingrong
    Zhu, Yangge
    Mkhonto, Peace P.
    Meng, Yao
    Mcfadzean, Belinda
    Ngoepe, Phuti E.
    O'Connor, Cyril
    SEPARATION AND PURIFICATION REVIEWS, 2024,
  • [45] Flotation separation of chalcopyrite from molybdenite with sodium thioglycolate: Mechanistic insights from experiments and MD simulations
    Zhang, Song
    Feng, Qicheng
    Wen, Shuming
    Xian, Yongjun
    Liu, Jian
    Liang, Guanyu
    SEPARATION AND PURIFICATION TECHNOLOGY, 2024, 342
  • [46] Effect of oxidation treatment on the selective separation of molybdenite from chalcocite using flotation
    Berdakh, Daniyarov
    Miki, Hajime
    Hirajima, Tsuyoshi
    Sasaki, Keiko
    Ulmaszoda, Akbarshokh
    Nakao, Ryota
    Ochi, Daishi
    Aoki, Yuji
    Suyantara, Gde Pandhe Wisnu
    POWDER TECHNOLOGY, 2024, 431
  • [47] 2-((5-Mercapto-1,3,4-thiadiazol-2-yl)thio)acetic acid as a novel chalcopyrite depressant for selective flotation separation of molybdenite from chalcopyrite
    Pan, Cheng-Lin
    Wei, Xiang-Xiang
    Zhang, Xu-Gang
    Xu, Yong-Wei
    Xu, Peng-Fei
    Luo, Yong-Chun
    MINERALS ENGINEERING, 2022, 183
  • [48] Flotation separation of molybdenite from chalcopyrite using rhodanine-3-acetic acid as a novel and effective depressant
    Wang, Changtao
    Liu, Runqing
    Wu, Meirong
    Xu, Zhijie
    Tian, Mengjie
    Yin, Zhigang
    Sun, Wei
    Zhang, Chenyang
    MINERALS ENGINEERING, 2021, 162
  • [49] Utilization of N-carboxymethyl chitosan as a selective depressant for talc in flotation of chalcopyrite
    Liu, Cheng
    Feng, Qiming
    Shi, Qing
    Zhang, Wencai
    Song, Shaoxian
    PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING, 2019, 55 (01): : 108 - 115
  • [50] ELECTROCHEMICAL FLOTATION SEPARATION OF CHALCOCITE FROM MOLYBDENITE
    CHANDER, S
    FUERSTENAU, DW
    INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1983, 10 (02) : 89 - 94