Effect and mechanism of depressant CK102 on flotation separation of fluorite and dolomite

• Autorzy: Li Zhengyao , Wang Xuewen , Xu Chengyan , Sun Tichang , Liu Weiran , Wei Jinzhi

Identyfikatory

DOI

10.37190/ppmp/145796

• Języki publikacji: EN

Abstrakty

EN

For a low grade dolomite type fluorite ore in the Hebei province, it was observed that the depressant CK102, a mixture of sulfuric acid, sodium silicate and aluminum sulfate, can effectively inhibit the gangue mineral dolomite in the flotation of fluorite. However, the inhibition mechanism of the depressant is still unclear. In this paper, the flotation separation performance and underlying mechanism of CK102 inhibiting dolomite were investigated through mineral flotation tests, adsorption measurements, infrared spectroscopy, and X-ray photoelectron spectroscopy (XPS). The flotation results showed that the inhibition effect of CK102 on dolomite flotation was much more remarkable than that of fluorite flotation under optimum conditions. Adsorption measurements revealed that there was competitive adsorption between the depressant and collector and that the adsorption of the depressant CK102 prevented the collector modified sodium oleate from adsorbing onto the surface of minerals. The FT-IR and XPS results showed that the co-oxygen cross-linked component of the depressant CK102 chemisorbed on the surface of dolomite; the CaSiO₃ precipitation was generated from the reaction of CK102 with Ca²⁺ groups on the surface of the dolomite; Al₂MgO₈Si₂ precipitation was also generated from Mg²⁺ reacting with the sodium silicate and aluminum sulfate of CK102. The above adsorptions and reactions enhanced the hydrophilicity of the dolomite surface and the dolomite was effectively depressed.

Słowa kluczowe

EN

fluorite; dolomite; flotation; depressant CK102; adsorption

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 3
• Strony: art. no. 145796
• Opis fizyczny: Bibliogr. 24 poz., rys., tab., wykr.

Twórcy

autor

Li Zhengyao

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

autor

Wang Xuewen

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

autor

Xu Chengyan

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

autor

Sun Tichang

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

autor

Liu Weiran

• Engineering Company of BGRIMM Technology Group, Beijing 100160, China

autor

Wei Jinzhi

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

Bibliografia

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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).