Effects of copper ions on malachite sulfidization flotation

• Autorzy: Yin Wanzhong , Sheng Qiuyue , Ma Yingqiang , Sun Haoran , Yang Bin , Tang Yuan

Identyfikatory

DOI

10.37190/ppmp20003

• Języki publikacji: EN

Abstrakty

EN

In this study, the effects of copper ions (Cu²⁺) on the sulfidization (Na₂S) flotation of malachite was investigated using micro-flotation experiments, zeta-potential measurements, X-ray photoelectron spectroscopy (XPS) analysis, adsorption experiments, and Materials Studio simulation. The results indicated that the flotation recovery of malachite decreased after the pretreatment of the mineral particles with Cu²⁺ ions prior to the addition of Na₂S. The results for zeta-potential measurements and XPS analysis revealed that less sulfide ion species in the pulp solution transferred onto the mineral surface, the sulfidization of malachite surface weakened. The adsorption amount of collector on the mineral surface decreased, and this finding was confirmed by the results of the zeta-potential and adsorption experiments. Materials Studio simulation revealed that the adsorption energy of HS- ions and C₄H₉OCSS- ions on malachite surface increased after the adding of Cu²⁺ ion. The competitive adsorption made Cu²⁺ ions depress sulfidization flotation of malachite, the dissolution of mineral surface affected the adsorption of reagents on it, and decreased the floatability of malachite.

Słowa kluczowe

EN

malachite; sulfidization flotation; Cu2+ ion; depression

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 2
• Strony: 300--312
• Opis fizyczny: Bibliogr. 38 poz., rys., wz.

Twórcy

autor

Yin Wanzhong

• School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China
• Northeastern University Genetic Mineral Processing Research Center, Shenyang 110819, China

autor

Sheng Qiuyue

• School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China

autor

Ma Yingqiang

• School of Zijin Mining, Fuzhou University, Fuzhou, Fujian 350108, China
• State Key Laboratory of Mineral Processing, Beijing 102628, China

autor

Sun Haoran

• School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China

autor

Yang Bin

• School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China

autor

Tang Yuan

• School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China

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Uwagi

The financial support from General Program of National Natural Science Foundation of China (No. 51874072), the National Natural Science Foundation of China (No. 51504053), and the Fundamental Research Funds for the Central Universities (No. N170107013), the National Natural Science Foundation of China (No. 51804081), the Found of State Key Laboratory of Mineral Processing (No.BGRIMM-KJSKL-2017-14).