Improving the flotation of ultrafine pyrite in alkaline solution by a novel polystyrene-based nanoparticle collector

• Autorzy: Chang Ziyong , Li Guoyao , Zhang Hao , Shen Zhengchang , Zou Laichang , Sun Zhongmei , Yang Songtao

Identyfikatory

DOI

10.37190/ppmp/195384

• Języki publikacji: EN

Abstrakty

EN

It is hard to achieve a satisfactory flotation performance of ultrafine pyrite in alkaline solution using the conventional xanthate collectors. In this work, a novel nanoparticle flotation collector Zijin Nanomaterial (ZJNM) was prepared by emulsion polymerization to enhance the flotation of ultrafine pyrite. It was found that ZJNM was effective in the flotation of ultrafine pyrite with diameter smaller than 18 μm in alkaline solution, which was independent on pH. Mechanism study indicated that the surface of pyrite in alkaline solution was composed of unoxidized surface area and oxidized surface area. ZJNM could adsorb on the unoxidized pyrite surface by forming Fe-S between S atoms on nanoparticles and Fe atoms on pyrite surface, and adsorb on oxidized pyrite surface through hydrogen bonding between -NH2 on nanoparticles and Fe-OH on pyrite surface, thus increasing the overall hydrophobicity of pyrite and benefit flotation. This work is of guiding significance to enhance the flotation of ultrafine pyrite in practice.

Słowa kluczowe

EN

flotation; ultrafine pyrite; nanoparticle; collector; adsorption

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2024
• Tom: Vol. 60, iss. 6
• Strony: art. no. 195384
• Opis fizyczny: Bibliogr. 32 poz., rys., wykr.

Twórcy

autor

Chang Ziyong

• State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd., Shang Hang 364200, Fujian
• Civil and Resource Engineering School, University of Science and Technology Beijing, Beijing, 100083, China

autor

Li Guoyao

• State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd., Shang Hang 364200, Fujian

autor

Zhang Hao

• Civil and Resource Engineering School, University of Science and Technology Beijing, Beijing, 100083, China

autor

Shen Zhengchang

• BGRIMM Technology Group, State Key Laboratory of Mineral Processing, Beijing 100160, China

autor

Zou Laichang

• State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd., Shang Hang 364200, Fujian

autor

Sun Zhongmei

• State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd., Shang Hang 364200, Fujian

autor

Yang Songtao

• State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co. Ltd., Shang Hang 364200, Fujian

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).