[HTML][HTML] Understanding the effect of sulphate in mining-process water on sulphide flotation

M Sinche-Gonzalez, D Fornasiero - Minerals Engineering, 2021 - Elsevier
Water quality affects the flotation recovery of minerals and their separation. Mining-process
waters become saturated with soluble salts after contact with minerals (oxidation and …

Magnetic properties of chalcopyrite and arsenopyrite for high-gradient magnetic separation with Crystal-Field Theory

P Dai, J Yang, Z Wei, J Zeng, Z Xue, L Chen - Minerals Engineering, 2022 - Elsevier
Separating chalcopyrite from arsenopyrite using flotation has been a big challenge due to
their similar floatability. However, this challenging condition may be partially solved by …

Selective depression mechanism of combination of lime and sodium humate on arsenopyrite in flotation separation of Zn–As bulk concentrate

WEI Qian, L Dong, C Yang, X Liu, J Fen… - Transactions of Nonferrous …, 2022 - Elsevier
Lime (CaO) and sodium humate (NaHA) were used as the combined depressant for
arsenopyrite pre-treated by CuSO 4 and butyl xanthate. Micro-flotation tests show that the …

Interaction of a novel depressant m-nitrobenzoate with arsenopyrite surface: DFT and experimental studies

X Sun, B Wu, H Qiu, J Chen, M Hu, K Hu - Colloids and Surfaces A …, 2022 - Elsevier
The selective interaction of reagents with mineral surfaces is the core basis for mineral
flotation separation. Herein, the interaction mechanism of a novel depressant m …

Oxidation mechanism of the arsenopyrite surface by oxygen with and without water: Experimental and theoretical analysis

C Manjiao, Z Zhengfu, H Xinjun, T Jianping… - Applied Surface …, 2022 - Elsevier
Arsenopyrite is a common mineral that is abundant in nonferrous metal tailings. Study of the
atomic configuration, chemical state, and morphology of the oxidation products of the …

Depression mechanism of peracetic acid for flotation separation of chalcopyrite from arsenopyrite based on coordination chemistry

P Dai, H Chen, L Chen, Y Liu, Z Wei - Minerals Engineering, 2022 - Elsevier
A highly selective depressant is of critical importance for efficient Cu-As separation. Herein,
the depression mechanism of peracetic acid (PAA) with respect to arsenopyrite is …

Oxidation mechanism of arsenopyrite under alkaline conditions: Experimental and theoretical analyses

M Chen, Z Zhang, X Hu, J Tian, Z Lu, J Wang… - Journal of Cleaner …, 2022 - Elsevier
In this study, arsenopyrite leaching test was conducted by sodium hydroxide solution with
pH= 10, 12, and 13.5. The electrochemical oxidation behavior of arsenopyrite in sodium …

Understanding the Water Splitting Mechanism on WO3(001)—A Theoretical Approach

T Teusch, T Klüner - The Journal of Physical Chemistry C, 2019 - ACS Publications
In this work we use different theoretical approaches to investigate the mechanism of water
splitting on (001)-WO3. Using an LCAO approach with periodic boundary conditions, hybrid …

Adsorption of Si (OH) 4 and Al (OH) 4 onto arsenopyrite surface: Exploring the sealing feasibility of geopolymer to arsenopyrite

M Chen, Z Zhang, X Hu, J Tian, J Wang, R Wan… - Minerals …, 2021 - Elsevier
As a common arsenic-bearing mineral, arsenopyrite is highly abundant in most nonferrous
metal tailings. Therefore, arsenic is leached into the environment from the stacking of tailings …

Mechanism of arsenic release process from arsenopyrite chemical oxidation

Q Hongxin, S Xiaohao, W Bozeng, S Xinqian… - Science of The Total …, 2024 - Elsevier
Oxidation of arsenopyrite is one of the main causes of arsenic pollution in the environment.
This study, examind changes in the surface properties of arsenopyrite in the presence of …