Chenxu Zhang, Wei Sun
Selective depression of serpentine remains a major challenge in the flotation of low-grade nickel sulphide ores because serpentine slimes impair concentrate grade and recovery. In this study, four structurally related micromolecular depressants bearing amino and phosphonic functionalities were designed, synthesized and systematically evaluated. Microflotation screening (depressant range: 0–20 mg ·L−1) and bench-scale tests identified an operational optimum near pH 9 and a reagent dosage of ≈18 mg·L−1; potassium butyl xanthate (PBX) was used as a collector and methyl isobutyl carbinol (MIBC) as a frother. Phosphonate-containing molecules (PMIDA and GLY) delivered the largest gains in pentlandite recovery and concentrate selectivity compared with carboxylate analogues and a benchmark depressant. Mechanistic studies (zeta potential, adsorption isotherms, FT-IR, and XPS) indicated that selective adsorption of amino and phosphonat.
@article{be1954f6-18bf-422d-9500-4b6ea66070cc,
title={The Depression Effect of Micromolecular Depressant Containing Amino and Phosphonic Acid Group on Serpentine in the Flotation of Low-Grade Nickel Sulphide Ore},
author={Chenxu Zhang and Wei Sun},
year={2025},
language={English}
}TY - JOUR TI - The Depression Effect of Micromolecular Depressant Containing Amino and Phosphonic Acid Group on Serpentine in the Flotation of Low-Grade Nickel Sulphide Ore AU - Chenxu Zhang AU - Wei Sun PY - 2025 LA - English ER -
John Chadwick
This article surveys contemporary technological developments aimed at enhancing the efficiency, selectivity, and sustainability of gold extraction and
FATHI HABASHI
In the past few years, extractive metallurgy has been advancing gradually, despite the absence of remarkable new ideas. This paper aims to summarize t
Osvaldo Pavez, Pablo Herrera
Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted of the physical
Cleophace Ngoie Mpinga
The thesis investigates alternative extraction strategies for platinum group metals (PGMs) from low-grade, high-chromium oxidized ores, which are incr
Gupta, A. and D.S. Yan
This work provides a comprehensive introductory treatment of mineral processing with a strong emphasis on the practical design and operation of benefi
Amin Rezaeizadeh, Silvia Mastellone
Power electronics converters are key enablers in the global energy transition for power generation, industrial and mobility applications; they convert