CAS OpenIR
Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field
Luo, Zhenggang1; Shu, Jiancheng1; Chen, Mengjun1; Wang, Rong1; Zeng, Xiangfei1; Yang, Yong2; Wang, Rui1; Chen, Shuyuan1; Liu, Renlong2; Liu, Zuohua2; Sun, Zhi3; Yu, Keli4; Deng, Yi5
2021-03-15
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
Volume211Pages:9
AbstractIn this study, electric field and ball milling were used to leach Mn2+ from low-grade pyrolusite (LGP). The effects of current density, reaction time, reaction temperature, ball-to-powder weight ratio, and ball milling time on the leaching efficiency of Mn2+ from LGP as well as the leaching mechanism were systematically studied. The results showed that the combined use of electric field and ball milling enhanced the leaching of Mn2+ from LGP. The leaching efficiency of Mn2+ reached 97.79% under the optimum conditions of LGP-to-pyrite mass ratio of 1:0.18, current density of 30 mA/cm2, LGP-to-H2SO4 mass ratio of 1:0.4, liquid-to-solid ratio of 5:1, ball-to-powder weight ratio of 1:1, ball milling time of 2 h, temperature of 80 degrees C, and leaching duration of 120 min. This value was 25.95% higher than that attained without ball milling and 41.45% higher than that attained when neither ball milling nor electric field was employed. Pyrite was fully oxidized to generate additional SO42- and Fe3+, and was further hydrolyzed to form jarosite (KFe3(SO4)(2)(OH)(6)) and hydronium jarosite (Fe-3(SO4)(2)(OH)(5)center dot 2H(2)O) via ball milling and electric field application. Moreover, the electric field changed the surface charge distribution of the mineral particles and promoted collisions between them as well as the collapse of the crystal lattice, further improving the leaching efficiency of Mn2+ from LGP. This study provided a new method for leaching Mn from LGP.
KeywordMn2+ Low-grade pyrolusite Ball milling Electric field Enhanced leaching
DOI10.1016/j.ecoenv.2021.111893
Language英语
Funding ProjectNational Key R&D Program of China[2018YFC1903500] ; National Natural Science Foundation of China[21806132] ; Science and Technology Program of Guizhou ProvinceChina[[2019]2863] ; Key research and development project of science and technology department of Sichuan province, China[2021YFH0058] ; Sichuan Province Science and Technology plan-Key Research and Development[19ZDYF0911] ; Science and Technology Project of Mianyang City, Sichuan Province[2019YFZJ014] ; Key R&D Program of Guangxi Province[AB18126088]
WOS Research AreaEnvironmental Sciences & Ecology ; Toxicology
WOS SubjectEnvironmental Sciences ; Toxicology
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Science and Technology Program of Guizhou ProvinceChina ; Key research and development project of science and technology department of Sichuan province, China ; Sichuan Province Science and Technology plan-Key Research and Development ; Science and Technology Project of Mianyang City, Sichuan Province ; Key R&D Program of Guangxi Province
WOS IDWOS:000617779000005
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/43620
Collection中国科学院过程工程研究所
Corresponding AuthorShu, Jiancheng
Affiliation1.Southwest Univ Sci & Technol, Key Lab Solid Waste Treatment & Resource Recycle, Minist Educ, 59 Qinglong Rd, Mianyang 621010, Sichuan, Peoples R China
2.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
4.China Natl Resources Recycling Assoc, 13 Yuetanbeixiaojie, Beijing 100037, Peoples R China
5.Minist Ecol Environm, Solid Waste & Chem Management Technol Ctr, Beijing 100000, Peoples R China
Recommended Citation
GB/T 7714
Luo, Zhenggang,Shu, Jiancheng,Chen, Mengjun,et al. Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2021,211:9.
APA Luo, Zhenggang.,Shu, Jiancheng.,Chen, Mengjun.,Wang, Rong.,Zeng, Xiangfei.,...&Deng, Yi.(2021).Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,211,9.
MLA Luo, Zhenggang,et al."Enhanced leaching of manganese from low-grade pyrolusite using ball milling and electric field".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 211(2021):9.
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