The Distribution Regularity and Flotation Study of Niobium-Bearing Minerals in Baiyun Obo

The characteristics of Baiyun Obo niobium-bearing minerals are complex physicochemical properties that make the beneficiation of niobium minerals extremely difficult. In this paper, X-ray diffraction, X-ray fluorescence and mineral liberation analyzer (MLA) systems were used to study the niobium occ...

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Bibliographic Details
Published in:Minerals (Basel) 2023-03, Vol.13 (3), p.387
Main Authors: Zhang, Min, Chen, Fangfang, Yan, Guoying, Li, Hongjing, Li, Jing, Peng, Guan, Yu, Hongdong
Format: Article
Language:English
Subjects:
Acids
Baiyun Obo
Beneficiation
Chemical composition
Collectors
Dissociation
Distribution
distribution regularity
Euxenite
Flotation
Fluorescence
International economic relations
Manganese
Metallurgy
Mineral composition
Mineral industry
Minerals
Mining industry
MLA
Niobium
Niobium oxides
NMR
Nuclear magnetic resonance
Optimization
Physicochemical processes
Physicochemical properties
Reagents
Securities
Spectrum analysis
Superconductors
X rays
X-ray diffraction
X-ray fluorescence
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Summary:The characteristics of Baiyun Obo niobium-bearing minerals are complex physicochemical properties that make the beneficiation of niobium minerals extremely difficult. In this paper, X-ray diffraction, X-ray fluorescence and mineral liberation analyzer (MLA) systems were used to study the niobium occurrence state and distribution of niobium-bearing minerals in the samples from Baiyun Obo. The results show that the chemical and mineral compositions of the sample are complex, with a Nb2O5 grading of 0.24%. There are many kinds of niobium minerals, including ilmenorutile, nioboaeschynite-Nd, baotite, latrappite, euxenite-Y, fergusonite and columbite-Mn, and the highest mass fraction of 0.55% is achieved with Nb in nioboaeschynite-Nd, followed by the mass fraction of ilmenorutile (0.33%). All of the niobium-containing minerals demonstrate a low degree of dissociation. Flotation experiments explored the optimal flotation conditions for HOBA (1-hydroxyoctyl-1,1-bisphosphonic acid) as a flotation collector for Baiyun Obo niobium minerals, which is able to increase the grade of Nb2O5 in the concentrate to 1.31%. The optimal use conditions of the reagent are pH 3.5–4.5, and the amount of the collector is 1000 g/t. By further optimizing the beneficiation process and reagent system, ilmenorutile and nioboaeschynite-Nd were significantly enriched in the concentrate, which suggested that HOBA can efficiently increase the grade of Nb2O5 in the concentrate.
ISSN:2075-163X
2075-163X
DOI:10.3390/min13030387