The correlation between the pulp rheology and the flotation performance in a scheelite ore: from the flotation kinetic perspective

• Autorzy: Zhang Pengyu , Wei Jinchao , Chen Wei , Zhao Qiang , Yang Zhuo

Identyfikatory

DOI

10.37190/ppmp/201418

• Języki publikacji: EN

Abstrakty

EN

Pulp rheology plays a very important role in deciding the subtle process of flotation. Here the correlation between the flotation kinetics of a scheelite ore and the pulp rheology was studied through batch flotation test and rheology measurement with data fitting. The pulp rheology was controlled by pulp concentration, adding surface inert gangue mineral-andradite with different size and content. Afterwards, the cumulative flotation grade and recovery as a function of flotation time was recorded with further kinetic analysis corresponding to their rheological properties including the yield stress and the degree of deviation from Newtonian fluid (D). The results showed that adding the coarse andradite (+75~-100 μm) at the mass ratio of 20/6 could selectively increase the flotation rate co-efficient for the slow floating fractions (from 0.24 min-1 to 0.63 min-1), which was responsible for the increased concentrate grade. In the meantime, the yield stress was in positive correlation with the degree of deviation from Newtonian fluid, indicating that the ideal Newtonian fluid type flotation slurry might exhibit high separation performance. The flotation kinetic for the fast floating fractions was hardly influenced by the D value, and was decided by kf = 0.00084D + 0.3911. However, the flotation kinetic for the slow floating fraction was quite dependent of the D value, and was decided by ks = -0.0092D+0.72593.

Słowa kluczowe

EN

flotation; rheology; flotation kinetics; yield stress; degree of deviation from Newtonian fluid

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2025
• Tom: Vol. 61, iss. 1
• Strony: art. no. 201418
• Opis fizyczny: Bibliogr. 33 poz., rys., tab., wykr.

Twórcy

autor

Zhang Pengyu

• Zhongye Changtian International Engineering Co. ,Ltd., Changsha, 410205, P.R. China

autor

Wei Jinchao

• Zhongye Changtian International Engineering Co. ,Ltd., Changsha, 410205, P.R. China

autor

Chen Wei

• Zhongye Changtian International Engineering Co. ,Ltd., Changsha, 410205, P.R. China
• College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

autor

Zhao Qiang

• Zhongye Changtian International Engineering Co. ,Ltd., Changsha, 410205, P.R. China

autor

Yang Zhuo

• Zhongye Changtian International Engineering Co. ,Ltd., Changsha, 410205, P.R. China

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