Sustainable use of copper resources: beneficiation of low-grade copper ores

SS Jena, SK Tripathy, NR Mandre, R Venugopal… - Minerals, 2022 - mdpi.com
The global market has announced copper as a modern energy metal and finds its extensive
utilization in the construction industry, electrical wiring, power transmission lines, alloying …

[HTML][HTML] Chemical stability of xanthates, dithiophosphinates and hydroxamic acids in aqueous solutions and their environmental implications

MA Elizondo-Álvarez, A Uribe-Salas… - … and Environmental Safety, 2021 - Elsevier
Currently there is a wide variety of collectors used in mineral processing, the xanthates
being the most used in sulfides flotation. Unfortunately, it is known that xanthates are not …

Feldspar purification from iron impurities: A review of treatment methods

F Baila, T Labbilta, Y Darmane - Mineral Processing and Extractive …, 2024 - Taylor & Francis
ABSTRACT A large amount of waste is generated during the processing of granite, resulting
in negative impacts on the environment. As part of an environmental commitment, granite …

Selective separation of chalcopyrite from pyrite using an acetylacetone-based lime-free process

S Wu, J Wang, L Tao, R Fan, C Wang, W Sun… - Minerals Engineering, 2022 - Elsevier
In the flotation separation of chalcopyrite and pyrite, the commonly used high-lime process
often causes problems such as losses of precious metals, blockage in pipelines and …

[HTML][HTML] The effects of dry grinding and chemical conditioning during grinding on the flotation response of a Cu-Zn sulphide ore and a spodumene pegmatite silicate …

A Tanhua, M Peltoniemi, R Kallio, S Peräniemi… - Minerals …, 2022 - Elsevier
Dry processing of metal containing ores is often easily discarded as a viable option because
of the higher energy consumption of dry grinding and several other challenges introduced …

Digestion behavior and removal of sulfur in high-sulfur bauxite during bayer process

Z Liu, H Yan, W Ma, K Xie, B Xu, L Zheng - Minerals Engineering, 2020 - Elsevier
In this paper, digestion behavior and removal of sulfur in high-sulfur bauxite during Bayer
process were studied. The thermodynamic analysis shows that pyrite reacts with alkali …

Removal of organic compounds from Bayer liquor by oxidation with sodium nitrate

M Li, Z Liu, H Yan, J Wei, S Liu - Hydrometallurgy, 2023 - Elsevier
Large amounts of organic-containing bauxite ores are used during alumina production.
Here, based on sulfur removal by NaNO 3 oxidation during actual production, we propose a …

Comparative study of the interaction mechanisms between galena, cerussite and anglesite with benzohydroxamate and octanohydroxamate in aqueous solution

MA Elizondo-Álvarez, A Uribe-Salas… - Minerals …, 2022 - Elsevier
Chelating agents have currently received particular attention in the search for reagents to
improve the separation of oxidized minerals by froth flotation. Among chelating reagents, the …

Ambient temperature flotation of sedimentary phosphate ore using cottonseed oil as a collector

Y Ruan, Z Zhang, H Luo, C Xiao, F Zhou, R Chi - Minerals, 2017 - mdpi.com
The mid-low grade sedimentary phosphate ore, abundant in silicate and carbonate gangue
minerals, exhibits a poor processability. It is conventionally enriched using high temperature …

Desulfurization by Adding Sodium Nitrate in the Production of Alumina from High-Sulfur Bauxite

S Liu, Z Liu, H Yan, M Li, C Xia - JOM, 2023 - Springer
The problem that sulfur causes in alumina production using the Bayer process can be
eliminated by adding sodium nitrate, and, while the reaction mechanism is not perfect, this …