CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Leaching magnesium oxide in boron mud by water with pressurized CO2
Bo, Jing1,2,3; Zhang, Yifei1,2; Zhang, Yi1,2
2017-08-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume171Pages:142-148
Abstract

In the process of leaching magnesium oxide by water containing CO2, the obtained concentration is normally only 5 g/L to 12 g/L. To obtain concentrated magnesic leaching liquor from boron mud, pressurized dissolution processes were investigated under various CO2 pressures from 1 MPa to 5 MPa, as well as ratios of solid to liquid, stirring speeds and leaching temperatures, which significantly influenced the leaching of magnesium oxide. And the concentration of MgO in the solution was achieved as high as 26.63 g/L with MgO leaching efficiency of 38.80% under the condition of CO2 pressure 5 MPa, solid/liquid ratio 0.18, stirring speed 500 rpm, leaching temperature 50 degrees C, and leaching time 1.5 h, meanwhile, the impurity concentrations of CaO, B, Fe, Pd and Si were 0.16 g/L, 0.11 g/L, 0.23 g/L, 0.01 g/L and 0.06 g/L, respectively. The magnesium oxide leaching method by pressurized carbonated water is applicable for treating with other materials rich in magnesium hydrate or magnesium oxide, such as calcined magnesite, dolomite and boron mud by CO2-soda process.

KeywordLeaching Magnesium Oxide Boron Mud Co2
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2017.05.010
Indexed BySCI
Language英语
WOS KeywordOlivine Dissolution Kinetics ; Mineral Carbonation ; Dioxide ; Sequestration ; Precipitation ; Salinity ; Storage ; Ph
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(21276258) ; National 863 Project of China(2011AA060701)
WOS IDWOS:000407874000018
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23171
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Bo, Jing,Zhang, Yifei,Zhang, Yi. Leaching magnesium oxide in boron mud by water with pressurized CO2[J]. HYDROMETALLURGY,2017,171:142-148.
APA Bo, Jing,Zhang, Yifei,&Zhang, Yi.(2017).Leaching magnesium oxide in boron mud by water with pressurized CO2.HYDROMETALLURGY,171,142-148.
MLA Bo, Jing,et al."Leaching magnesium oxide in boron mud by water with pressurized CO2".HYDROMETALLURGY 171(2017):142-148.
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