Flotation separation of scheelite and calcite using the biopolymer konjac glucomannan: A novel and eco-friendly depressant
Source abstract
Abstract
This study investigated the effect of konjac glucomannan (KGM) on the flotation separation of calcite and scheelite. Microflotation tests showed that under the action of 50 mg/L KGM, the floatability of calcite notably decreased, while the impact on scheelite was negligible, resulting in a recovery difference of 82.53%. Fourier transform infrared (FTIR) spectroscopy and atomic force microscopy (AFM) analyses indicated the selective adsorption of KGM on the calcite surface. Test results of the zeta potential and UV-visible absorption spectroscopy revealed that KGM prevented the adsorption of sodium oleate on the calcite surface. X-ray photoelectron spectroscopy (XPS) analysis further confirmed the chemical adsorption of KGM on the calcite surface and the formation of Ca(OH)2. The density functional theory (DFT) simulation results were consistent with the flotation tests, demonstrating the strong adsorption performance of KGM on the calcite surface. This study offers a pathway for highly sustainable and cost-effective mineral processing by utilizing the unique properties of biopolymers such as KGM to separate valuable minerals from gangue minerals.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polysaccharides Composition and Applications · Minerals Flotation and Separation Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
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