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- Title
硫酸锌添加顺序对乙硫氮在方铅矿和 闪锌矿表面吸附的影响.
- Authors
谭 欣; 朱阳戈; 孙传尧; 肖巧斌
- Abstract
The effect of inorganic depressant zinc sulfate on the flotation of galena and sphalerite was investigated using micro flotation tests, and different addition orders of zinc sulfate and diethyldithiocarbamate were also studied. When zinc sulfate is added firstly, its depression effect on sphalerite is considerable, but on galena is weak. But when diethyldithiocarbamate is added firstly, zinc sulfate has little depression effect on galena flotation, whereas still strongly depresses sphalerite. The interaction between zinc sulfate and diethyldithiocarbamate on the sulfide surface was studied by adsorption measurement It is indicated that the diethyldithiocarbamate strongly absorbs on the galena surface, and zinc sulfate has no impact on the adsorption of diethyldithiocarbamate on the galena surface, while the adsorption of diethyldithiocarbamate on the sphalerite surface is weak. Infrared microspectrography analysis suggests that the addition of zinc sulfate decreases the adsorption of diethyldithiocarbamate on the sphalerite surface, which is the reason that zinc sulfate can depress sphalerite adsorbing diethyldithiocarbamate. The addition of zinc sulfate has little depression effect on the adsorption of the diethyldithiocarbamate on the galena surface, therefore can hardly depress the galena flotation. Time of flight secondary ion mass spectrometry (ToF SIMS) analysis suggests that as compared to the addition first of zinc sulfate, less zinc hydroxide hydrocolloids and more diethyldithiocarbamate are adsorbed on the galena surface, while more zinc hydroxide hydrocolloids and less diethyldithiocarbamate are adsorbed on the sphalerite surface, when diethyldithiocarbamate is added firstly, and so as to be more useful to realize the flotation separation of Pb Zn.
- Subjects
SECONDARY ion mass spectrometry; SPHALERITE; ZINC sulfate; GALENA; DIETHYLDITHIOCARBAMATE; HYDROCOLLOIDS
- Publication
Nonferrous Metals Engineering, 2022, Vol 12, Issue 12, p73
- ISSN
2095-1744
- Publication type
Article
- DOI
10.3969/j.issn.2095-1744.2022.12.010