Selective adsorption mechanism of salicylic acid on pyrite surfaces and its application in flotation separation of chalcopyrite from pyrite

G Han, S Wen, H Wang, Q Feng - Separation and Purification Technology, 2020 - Elsevier
In the flotation process of copper sulfide, traditional inorganic depressants used for pyrite
often cause environmental problems and difficulty in treatment of the tailings and waste …

[HTML][HTML] Interaction mechanism of tannic acid with pyrite surfaces and its response to flotation separation of chalcopyrite from pyrite in a low-alkaline medium

G Han, S Wen, H Wang, Q Feng - Journal of Materials Research and …, 2020 - Elsevier
In the process of chalcopyrite–pyrite flotation, depression of pyrite is of great significance. In
this study, tannic acid (TA) was used to replace traditional inorganic reagents for depression …

Pyrogallic acid as depressant for flotation separation of pyrite from chalcopyrite under low-alkalinity conditions

G Han, S Wen, H Wang, Q Feng, X Bai - Separation and Purification …, 2021 - Elsevier
Effective and low-cost flotation separation of chalcopyrite and pyrite has always been a
challenge in the minerals processing industry. Traditional depressants in a Cu–Fe sulfide …

The effects of hydroxyl on selective separation of chalcopyrite from pyrite: A mechanism study

H Zhang, F Zhang, W Sun, D Chen, J Chen… - Applied Surface …, 2023 - Elsevier
The separation of chalcopyrite from pyrite is usually carried out under high alkaline
conditions. However, the separation mechanism of chalcopyrite from pyrite under high …

Investigating the selectivity of a xanthate derivative for the flotation separation of chalcopyrite from pyrite

X Huang, K Huang, Y Jia, S Wang, Z Cao… - Chemical Engineering …, 2019 - Elsevier
Separating chalcopyrite, an important copper-containing ore, from pyrite is an important
mineral-processing objective. Herein, we report the synthesis of S-hydroxyethyl-O-isobutyl …

Selective separation of chalcopyrite from pyrite with a novel non-hazardous biodegradable depressant

SA Khoso, Y Hu, F Lyu, R Liu, W Sun - Journal of Cleaner Production, 2019 - Elsevier
Pyrite depression in copper ore flotation often requires large doses of inorganic depressants
that lead to high toxicity, high costs, and low selectivity. Thus, this study offers a novel pyrite …

Adsorption and depression mechanism of an eco-friendly depressant PCA onto chalcopyrite and pyrite for the efficiency flotation separation

X Wang, J Liu, Y Zhu, Y Han - Colloids and Surfaces A: Physicochemical …, 2021 - Elsevier
At present, it is still a difficulty to separate chalcopyrite from pyrite due to the similar
electrochemical properties of the two minerals, which would dilute the grade of copper …

Flotation separation of molybdenite from chalcopyrite using an environmentally-efficient depressant L-cysteine and its adsoption mechanism

Z Yin, S Chen, Z Xu, C Zhang, J He, J Zou, D Chen… - Minerals …, 2020 - Elsevier
In this work, L-cysteine was introduced as an environmentally-efficient flotation reagent in
the selective separation of molybdenite from chalcopyrite. Its flotation performance and …

Improved flotation of chalcopyrite from galena and pyrite by employing Cu-affinity phosphate collector

X Jiang, W Zhang, R Fan, Z Zhang, S Chen… - Minerals …, 2023 - Elsevier
Sulfide minerals have similar flotation behavior using the commonly-used collectors such as
xanthate due to its low selectivity to active metal ions on sulfide minerals, which leads to …

Investigating the flotation performance and interfacial adsorption mechanism of N-benzoyl-N', N'-diethyl thiourea on chalcopyrite and pyrite

H Duan, X Huang, X Cao, Z Cao, H Zhong, J Zeng… - Minerals …, 2021 - Elsevier
Flotation collectors with strong collecting ability and superior selectivity have important
application prospects for recovering complex and refractory copper sulfide resources …