Enhancement of copper dissolution by mechanochemical activation of copper ores: Correlation between leaching experiments and DEM simulations

Minagawa, Masaya; Hisatomi, Shosei; Kato, Tatsuya; Granata, Giuseppe; Tokoro, Chiharu

doi:10.1016/j.apt.2017.11.031

Cited by 29 publications

(13 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Every year, in the RSA, 3.5 t of gold and 700 t of uranium are produced at waste dumps of gold mining mills with 0.53 g/t gold and 40 g/t uranium content, average productivity making 50 000 t/day. The same trend is observed in Canada, Great Britain, Spain and other countries [11,[20][21][22][23][24].…”

Section: Monitoringsupporting

confidence: 75%

“…Intensive development of mining and metallurgical complexes results in accumulation of considerable amount of wastes, more than half of which is produced by the mining industry [12,[18][19][20]. Many scientific works deal with technological solutions of waste utilization problems [21][22][23][24].…”

Section: Monitoringmentioning

confidence: 99%

“…In the state of Montana (USA), 2 t of gold and 4 t of silver are obtained annually at waste dumps with 0.84 g/t of gold and 2.8 g/t of silver content. In Michigan (USA), 60% of copper is extracted from mill tailings with 0.3% copper content [1][2][3][20][21][22][23][24].…”

Section: Monitoringmentioning

confidence: 99%

See 2 more Smart Citations

Sustainable development of mining processes based on mechanochemical leaching of ore

et al. 2020

View full text Add to dashboard Cite

Intensive development of the mining and metallurgical complex results in considerable volumes of waste materials, more than half of which are produced by mining enterprises. Modern mining and processing can provide non-waste production only if mineral extraction and grade recovery from natural and technogenic mineral materials are regarded as a single technological process and the Earth surface preservation becomes a priority in determining parameters of process integration. The research is aimed at improving of the technology of metal leaching in a disintegrator through complex application of metallic ore concentration tailings. A radical step of reducing mining waste hazards is their utilization through introducing technogenic reserves of metallic ore concentration tailings into production, thus creating a new raw material base for the mining industry. Substantiation of the concept of non-waste utilization of off-grade mineral materials depends on the amount of integration of chemical leaching and mechanochemical activation in the disintegrator and is achieved by means of modern information technologies.

show abstract

Section: Monitoringsupporting

confidence: 75%

Section: Monitoringmentioning

confidence: 99%

See 1 more Smart Citation

Sustainable development of mining processes based on mechanochemical leaching of ore

et al. 2020

View full text Add to dashboard Cite

show abstract

“…High-intensity grinding, like planetary ball milling, has the ability to modify crystal structures of solid substances and/or induce a chemical reaction, which is referred to as mechanochemical reaction [24,25]. Mechanochemical reactions have a positive influence on hydrometallurgical processes and have been applied for metals dissolution from ores [2,5,22,23,[26][27][28]; however, these studies only focused on investigation of the reaction mechanism. There is still limited knowledge of mechanochemical reactions and their theory has not been established.…”

Section: Introductionmentioning

confidence: 99%

Structural Change Analysis of Cerianite in Weathered Residual Rare Earth Ore by Mechanochemical Reduction Using X-Ray Absorption Fine Structure

et al. 2019

Self Cite

View full text Add to dashboard Cite

Prolonged high-intensity grinding can modify the crystal structure of solid substances and/or induce chemical reaction, which is referred to as mechanochemical reaction. Such reactions can exert positive influences on hydrometallurgical processes, therefore, many researchers have applied mechanochemical reactions for metals dissolution from minerals. The mechanism of mechanochemical reaction has been investigated using solid analyses and simulations. Structural changes caused by mechanochemical reactions are not yet sufficiently clarified because the ground samples are amorphous. The objective of this study was to analyze structural changes of cerianite in weathered residual rare earth ore by mechanochemical reduction. The ore was ground by planetary ball milling for 10, 60 and 720 min. Structural change was analyzed by the X-ray absorption near-edge structure and extended x-ray absorption fine structure analysis at the cerium LIII- and K-edges. These analyses revealed that the structural change of cerianite in this ore induced by mechanochemical reduction involved oxygen vacancy production. The process of the oxygen vacancy formation was closely coupled with the quantum effect of localization–delocalization of the 4f electron of cerium.

show abstract

“…In the work of Minagawa et al (2018), the influence of planetary ball milling and vertical stirred ball milling on the leaching of a copper ore containing copper sulphate and covellite was investigated. A mixed experimental-simulation approach to correlate the kinetic parameters of leaching to the collision energy during grinding was used.…”

Section: Literature Analysis and Problem Statementmentioning

confidence: 99%

Investigation of Mechanochemical Leaching of Non-Ferrous Metals

Голик

Morkun

et al. 2019

Acta Mechanica Et Automatica

View full text Add to dashboard Cite

The research deals with metal extraction from off-grade ores and concentration tailings. There are provided results of simulating parameters of reagent leaching of metals in the disintegrator according to the metal recovery ratio. The research substantiates the method of waste-free processing of chemically recovered ores. Recovery of metals into solution is the same both under multiple leaching of tailings or ore in the disintegrator and agitation leaching of tailings or ore previously activated in the disintegrator with leaching solutions. The time of agitation leaching is more by two orders of magnitude than that of the disintegrator processing. Recovery of metals into solution is most affected by the content of sodium chloride in the solution. Then, in decreasing order, go the content of sulfuric acid in the solution, the disintegrator rotor rpm and L:S ratio.

show abstract

Enhancement of copper dissolution by mechanochemical activation of copper ores: Correlation between leaching experiments and DEM simulations

Cited by 29 publications

References 36 publications

Sustainable development of mining processes based on mechanochemical leaching of ore

Sustainable development of mining processes based on mechanochemical leaching of ore

Structural Change Analysis of Cerianite in Weathered Residual Rare Earth Ore by Mechanochemical Reduction Using X-Ray Absorption Fine Structure

Investigation of Mechanochemical Leaching of Non-Ferrous Metals

Contact Info

Product

Resources

About