Adsorption of yeast dextran on clinochlore surface and the implications for pyrite/clinochlore separation

• Autorzy: Wang Zhen , Zou Dan , Zhao Kaile , Safarov Sayfidin , Xu Ying

Identyfikatory

DOI

10.37190/ppmp/151635

• Języki publikacji: EN

Abstrakty

EN

Silicate minerals with a certain degree of flotability are often easy to mix into sulfide ore concentrate in mineral processing industry. In this paper, the adsorption of yeast dextran on clinochlore and its application in pyrite/clinochlore separation were investigated. The adsorbed amount and micro polarity measurement results displayed that the yeast dextran molecules selectively adsorbed onto clinochlore surface compared with pyrite. The adsorbed yeast dextran resulted in the increase in the surface polarity of clinochlore surface, and inhibited the further adsorption of xanthate, thus keep it hydrophilic and depressed. Quantum chemical computation results indicated that yeast dextran was mainly adsorbed on mineral surface by the chelation with the surface metal active sites, and the chelating strength of yeast dextran with three ions was in the sequence of Fe³⁺ > Mg²⁺ > Fe²⁺. While Mg²⁺, Fe²⁺ and Fe³⁺ are the main metal ions on the surface of clinochlore, and Fe²⁺ is the unique metal ions on pyrite surface. This is the reason of the selectivity of the yeast dextran depressant for pyrite/clinochlore flotation system. The flotation results demonstrated that yeast dextran was qualified to selectively depress clinochlore in pyrite flotation.

Słowa kluczowe

EN

clinochlore; pyrite; flotation; yeast dextran; adsorption

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 4
• Strony: art. no. 151635
• Opis fizyczny: Bibliogr. 28 poz.

Twórcy

autor

Wang Zhen

• Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China

autor

Zou Dan

• Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China

autor

Zhao Kaile

• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu 610041, Sichuan, China

autor

Safarov Sayfidin

• Institute of Chemistry, Tajikistan Academy of Sciences, Dushanbe, 734063, Tadjikistan

autor

Xu Ying

• Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).