Results 321 to 330 of about 2,318,568 (392)

Determination of the available acid-generating potential of waste rock, part I: Mineralogical approach

Applied Geochemistry, 2018
Significant volumes of waste rock are produced in mining operations, particularly in open pit operations. Waste rock is characterized by a high heterogeneity in their mineralogical, hydrogeological, and physical properties, especially in comparison to ...
A. Elghali, M. Benzaazoua, H. Bouzahzah, B. Bussiére, H. Villarraga-Gómez   +4 more
semanticscholar   +3 more sources

Reprocessing feasibility of polymetallic waste rock for cleaner and sustainable mining

, 2021
Mining operation produces significant volumes of waste rocks (WR) characterised by high heterogeneity in their physical, mineralogical and hydrogeological properties.
Amar Hicham, Benzaazoua Mostafa, Edahbi Mohamed, Villeneuve Mathieu, M. Joly, E. Abdellatif   +5 more
semanticscholar   +1 more source

Zero-valent iron nanoparticles supported by functionalized waste rock wool for efficient removal of hexavalent chromium

Chemical Engineering Journal, 2018
LingLin Zhou, Rongrong Li, Guilong Zhang, Dongfang Wang, D. Cai, Zhengyan Wu   +5 more
semanticscholar   +3 more sources

Antimony mobility in soil near historical waste rock at the world's largest Sb mine, Central China.

Science of the Total Environment
Soil near waste rock often contains high concentrations of antimony (Sb), but the mechanisms that mobilize Sb in a soil closely impacted by the waste rock piles are not well understood.
Weiqing Zhou, Peng Liu, Zhihang Ye, B. Wen, R. Beckie, Aiguo Zhou, Ziyi Zhou, Jianwei Zhou   +7 more
semanticscholar   +1 more source

Scale dependence of effective geochemical rates in weathering mine waste rock.

Journal of Contaminant Hydrology, 2020
Hydrogeochemical models for the prediction of drainage quality from full-scale mine waste-rock piles are often parameterized using data from small-scale laboratory or field experiments of short duration.
B. Vriens, N. Seigneur, K. Mayer, R. Beckie   +3 more
semanticscholar   +1 more source

Geochemical and mineralogical assessment of reactivity in a full-scale heterogeneous waste-rock pile

Minerals Engineering, 2020
Mine waste rock is typically stored on-site in large piles that are heterogeneous in terms of material composition and grain size. This leads to variable reactivity within the pile and makes prediction of drainage quality difficult. Here, we present data
Mélanie St-Arnault, B. Vriens, R. Blaskovich, C. Aranda, B. Klein, K. Ulrich Mayer, R. Beckie   +6 more
semanticscholar   +1 more source

Mathematical modeling for optimized mine waste rock disposal: Establishing more effective acid rock drainage management

, 2020
Acid rock drainage (ARD), produced from sulfide-bearing mine waste (e.g., waste rock, tailings) at active and abandoned mine sites, continues to be a global concern due to the significant impacts on water, soil, biodiversity, and the creation of public ...
V. Vaziri, A. Sayadi, Amin Mousavi, Anita Parbhakar-Fox, M. Monjezi   +4 more
semanticscholar   +1 more source

Waste-rock hydrogeology and geochemistry

Applied Geochemistry, 2015
Abstract The oxidation of sulfide minerals in waste rock has the potential to generate low-quality drainage that can present a significant challenge to mine owners, regulators, and other stakeholders. Challenges involved in managing waste rock include the large volume of waste rock produced and the difficulty in predicting the quality and quantity of
Richard T. Amos, David W. Blowes, Brenda L. Bailey, David C. Sego, Leslie Smith, A. Ian M. Ritchie   +5 more
openaire   +1 more source

Diavik waste rock project : blasting residuals in waste rock piles

2011
Mining generates and moves the highest volume of material in the world. At mine sites throughout the world, explosives are used to fragment rock into workable size fractions. Mine-water chemistry can be influenced by residual blasting agents used during mining.
Bailey, Brenda L., Smith, Lianna J.D., Blowes, David W., Ptacek, Carol J., Smith, Leslie, Sego, David C.   +5 more
openaire   +1 more source

Optimization of open pit to underground transition depth: An idea for reducing waste rock contamination while maximizing economic benefits

, 2020
As open pit (OP) mines grow downward, more waste rocks are produced. Thus, the waste removal and management costs increase exponentially. On the other hand, waste rocks spoil natural surfaces, water resources, and local biodiversity surrounding mining ...
A. S. Khaboushan, M. Osanloo, A. Esfahanipour   +2 more
semanticscholar   +1 more source