The surface features of activated stibnite surface with copper or lead ion

• Autorzy: Cao Q. , Huang Y. , Zou H. , Wen S.

Identyfikatory

DOI

10.5277/ppmp1884

• Języki publikacji: EN

Abstrakty

EN

Cu2+ and Pb2+ are widely used as activators for the flotation of stibnite. In this work, by the treatment of Cu2+ or Pb2+, the activation product and the thickness of activation layer on the stibnite surface were both investigated. Based on the flotation results, zeta potential analysis and X-ray photoelectron spectroscopy (XPS) study, it was found that Cu2+ was reduced to Cu+ at the stibnite surface and a layer of Cu2S was formed at the surface. While, a PbS layer presenting at the stibnite surface is responsible for the activation flotation of stibnite with Pb2+. Time of flight secondary ion mass spectrometry (TOF-SIMS) analysis further implies that, when stibnite was activated with 5×10-5 mol/dm3 of CuSO4 or Pb(NO3)2, the thickness of Cu2S layer on the Cu-activated surface was close to 2.7 nm, while the thickness of PbS layer was about 1.8 nm on the Pb-activated surface.

Słowa kluczowe

EN

stibnite; flotation; activation; active layer

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2018
• Tom: Vol. 54, iss. 3
• Strony: 763--770
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Cao Q.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, 650093, Yunnan, PR China

autor

Huang Y.

• Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, PR China

autor

Zou H.

• Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, 650093, Yunnan, PR China

autor

Wen S.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming, 650093, Yunnan, PR China

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