Effect of H2O2 and Ethylene Glycol on Molybdenite Dissolution in H2SO4 Solution

被引：4
作者：
Bai, Yunlong [1 ,2 ]
Wang, Wei [1 ,2 ]
Xie, Feng [1 ,2 ]
Zhu, Huiping [1 ,2 ]
Lu, Diankun [1 ,2 ]
Jiang, Kaixi [3 ]
机构：
[1] Northeastern Univ, Key Lab Ecol Met Multimetall Ores, Minist Educ, Shenyang 110819, Liaoning, Peoples R China
[2] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
[3] Fuzhou Univ, Coll Zijin Min, Fuzhou 350108, Fujian, Peoples R China
来源：
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2023年 / 76卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Molybdenite; H2O2; Ethylene glycol; Leaching; Kinetics; Electrochemistry; HYDROGEN-PEROXIDE; CATALYTIC DECOMPOSITION; CHALCOPYRITE; KINETICS; CONCENTRATE; OXIDATION; COPPER; MEDIA;
D O I：
10.1007/s12666-022-02702-6
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The leaching behavior of molybdenite was investigated in H2O2-H2SO4 solution in this paper. The results show that H2O2 was an effective oxidant for molybdenite leaching, but it had fast decomposition kinetics. A final molybdenum extraction of 73.0% was obtained under the experimental conditions of 0.5 mol/L H2SO4, 0.5 mol/L H2O2, and the fresh H2O2 addition enhanced molybdenum extraction from 73.0 to 94.5%. The leaching process was controlled by a mixture of surface reactions and diffusion, and the activation energy was 27.98 kJ/mol. Ethylene glycol enhanced molybdenum extraction and improved the stability of H2O2. Electrochemical studies suggested that the decomposition kinetics of H2O2 was faster than that of molybdenite oxidation, and ethylene glycol enhanced recovery by increasing the resistance of H2O2 decomposition and decreasing the resistance of molybdenite oxidation. XRD and XPS analysis confirmed that ethylene glycol did not alter the phase composition and the surface chemical statues of molybdenite.
引用
收藏
页码：39 / 47
页数：9
相关论文
共 25 条
[11]   Selective flotation of chalcopyrite and molybdenite with H2O2 oxidation [J].
Hirajima, Tsuyoshi ;
Miki, Hajime ;
Suyantara, Gde Pandhe Wisnu ;
Matsuoka, Hidekazu ;
Elmandy, Ahmed Mohamed ;
Sasaki, Keiko ;
Imaizumi, Yuji ;
Kuroiwa, Shigeto .
MINERALS ENGINEERING, 2017, 100 :83-92
[12]   Catalytic decomposition of hydrogen peroxide and 2-chlorophenol with iron oxides [J].
Huang, HH ;
Lu, MC ;
Chen, JN .
WATER RESEARCH, 2001, 35 (09) :2291-2299
[13]   Enhancing chalcopyrite leaching by tetrachloroethylene-assisted removal of sulphur passivation and the mechanism of jarosite formation [J].
Kartal, Muhammet ;
Xia, Fang ;
Ralph, David ;
Rickard, William D. A. ;
Renard, Francois ;
Li, Wei .
HYDROMETALLURGY, 2020, 191
[14]   Kinetics of pressure oxidative leaching of molybdenite concentrate by nitric acid [J].
Khoshnevisan, Amin ;
Yoozbashizadeh, Hosein ;
Mozammel, Mandi ;
Sadrnezhaad, Seyed Khatiboleslam .
HYDROMETALLURGY, 2012, 111 :52-57
[15]   Kinetics of oxidation roasting of molybdenite with different particle sizes [J].
Li, Xiao-bin ;
Wu, Tao ;
Zhou, Qiu-sheng ;
Qi, Tian-gui ;
Peng, Zhi-hong ;
Liu, Gui-hua .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2021, 31 (03) :842-852
[16]   Enhanced leaching of copper from chalcopyrite in hydrogen peroxide-glycol system [J].
Mahajan, V. ;
Misra, M. ;
Zhong, K. ;
Fuerstenau, M. C. .
MINERALS ENGINEERING, 2007, 20 (07) :670-674
[17]  
Olubami PA, 2006, J S AFR I MIN METALL, V106, P765
[18]   Autoclave Leaching of Molybdenite Concentrates with Catalytic Additives of Nitric Acid [J].
Smirnov, K. M. ;
Raspopov, N. A. ;
Shneerson, Ya. M. ;
Lapin, A. Yu. ;
Bitkov, G. A. ;
Men'shikov, Yu. A. ;
Paskhin, P. N. ;
Kirichenko, V. P. .
RUSSIAN METALLURGY, 2010, (07) :588-595
[19]   A comparative study on oxidation of disperse dyes by electrochemical process, ozone, hypochlorite and Fenton reagent [J].
Szpyrkowicz, L ;
Juzzolino, C ;
Kaul, SN .
WATER RESEARCH, 2001, 35 (09) :2129-2136
[20]   Kinetics of chalcopyrite leaching in either ferric sulphate or cupric sulphate media in the presence of NaCl [J].
Veloso, Tacia C. ;
Peixoto, Johne J. M. ;
Pereira, Marcio S. ;
Leao, Versiane A. .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2016, 148 :147-154
123