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Effects of silicate-bacteria pretreatment on desiliconization of magnesite by reverse flotation

文献类型：期刊论文

作者Teng, Qing1,2; Feng, Yali1; Li, Haoran2
刊名COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
出版日期2018-05-05
卷号544页码:60-67
关键词Silicate Bacteria Magnesite Reverse Flotation Dodecylamine
ISSN号0927-7757
DOI10.1016/j.colsurfa.2018.02.022
文献子类Article
英文摘要Combined with silicate-bacteria pretreatment, the reverse flotation was utilized to achieve desiliconization of magnesite ore using dodecylamine as a collector. The reverse flotation experiments were conducted on magnesite ore with and without silicate-bacteria pretreatment. The reverse flotation experiments showed that the SiO2 grade of the concentrate decreased to 2.56% with silicate-bacteria pretreatment while the SiO2 grade of the concentrate was 4.61% without silicate-bacteria pretreatment. The concentrate was characterized using XRD and XRF, and the results indicated that the silicate-bacteria could dissolve the silicate minerals in the magnesite ore. The improved role of silicate-bacteria pretreatment on reverse flotation was investigated using microscopic view, zeta-potential, FTIR and SEM-EDX studies. The silicate minerals were dissolved as attested through microscopic view and FT-IR studies. Zeta potential indicated that the magnesite surface became hydrophilic by biopretreatment. SEM-EDX confirmed that there was polysaccharide secreted by the silicate bacteria attached on the magnesite surface.
WOS关键词MICROBIALLY INDUCED SEPARATION ; PAENIBACILLUS-POLYMYXA ; MINERAL DISSOLUTION ; QUARTZ ; HEMATITE ; RECOVERY ; ADHESION
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000428257100008
资助机构Major science and technology program for water pollution control and treatment(2015ZX07205-003) ; China Ocean Mineral Resources Research & Development Program(DY125-15-T-08) ; National Natural Science Foundation of China(21176026 ; 21176242)
源URL[http://ir.ipe.ac.cn/handle/122111/24136]  
专题过程工程研究所_生化工程国家重点实验室
作者单位1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Teng, Qing,Feng, Yali,Li, Haoran. Effects of silicate-bacteria pretreatment on desiliconization of magnesite by reverse flotation[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2018,544:60-67.
APA Teng, Qing,Feng, Yali,&Li, Haoran.(2018).Effects of silicate-bacteria pretreatment on desiliconization of magnesite by reverse flotation.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,544,60-67.
MLA Teng, Qing,et al."Effects of silicate-bacteria pretreatment on desiliconization of magnesite by reverse flotation".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 544(2018):60-67.

入库方式： OAI收割

来源：过程工程研究所

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