4.7 Article

In-situ study of texture-breakage coupling in a copper ore using X-ray micro-CT

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Water Resources

Investigation of supercritical CO2 mass transfer in porous media using X-ray micro-computed tomography

Ruotong Huang et al.

Summary: Understanding the mass transfer of CO2 into formation brine is crucial for the safety of geologic carbon sequestration. This study used quasi-dynamic X-ray micro-computed tomographic imaging to track the evolution of scCO2 clusters in sandstone during brine injection. The mass transfer coefficient of individual scCO2 clusters was found to range between 3.0x10-5 and 3.5x10-4 mm/s, with a macroscopic average of 1.4x10-4 mm/s. These values provide insight into the range of mass transfer coefficients expected for similar conditions. The study also highlighted the coupling of dissolution and mobilization processes, emphasizing the need to understand these dynamics for effective CO2 storage.

ADVANCES IN WATER RESOURCES (2023)

Review Engineering, Geological

A state-of-the-art review of mechanical characteristics and cracking processes of pre-cracked rocks under quasi-static compression

Liwang Liu et al.

Summary: The mechanical properties and failure behavior of rocks with flaws or discontinuities have been extensively studied in the field of rock mechanics. This paper provides a systematic review of experimental results on pre-cracked rocks under quasi-static compression. The influence of flaw geometries, filling conditions, and confining pressure on the mechanical characteristics of rocks is discussed. The cracking process is evaluated in terms of crack initiation, coalescence, and failure patterns.

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING (2022)

Article Geosciences, Multidisciplinary

Potassium silicate alteration in porphyry copper-gold deposits: a case study at the giant maar-diatreme hosted Grasberg deposit, Indonesia

Richard W. Henley et al.

Summary: Potassium silicate alteration is a key feature in the formation of porphyry copper deposits, where the addition of metals and other components to the host rocks is mainly through reactive magmatic gas, resulting in distinct mineral assemblages in the deposits. The alteration at the deposit scale is mainly isochemical with respect to major rock-forming components, and the release of sulphur and economic metals from source intrusions at depth plays a crucial role in the formation of the economic reserve available for mining.

JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH (2022)

Article Instruments & Instrumentation

A versatile microtomography system to study in situ the failure and fragmentation in geomaterials

N. Francois et al.

Summary: This article presents a microtomography experimental platform for in situ micro-mechanical study of failure and fragmentation in geomaterials. The system incorporates a high-pressure triaxial flow cell integrated into a custom built microtomography scanner with a laboratory x-ray source. The experimental system produces high-quality 3D images of microstructural changes in rocks undergoing mechanical failure and fragmentation.

REVIEW OF SCIENTIFIC INSTRUMENTS (2022)

Article Geosciences, Multidisciplinary

Sulfur sequestration and redox equilibria in volcanic gases

Richard W. Henley et al.

Summary: Calcium plays a crucial role in high temperature gas-solid reactions, controlling the total sulfur content and redox state of volcanic gas mixtures through deposition of anhydrite and release of reduced sulfur. This process may lead to significantly underestimated estimates of total sulfur released annually from the mantle.

JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH (2021)

Article Environmental Sciences

Evolution of Bentheimer Sandstone Wettability During Cyclic scCO2-Brine Injections

A. L. Herring et al.

Summary: Geologic sequestration in sedimentary formations is identified as a potential technology for preventing CO2 emissions that lead to climate change. Understanding and predicting the behavior of scCO2 in subsurface rock formations is crucial for safe and effective storage, with experiments showing conflicting results regarding trapping consistency over multiple injection cycles. New experiments confirm shifts in injection pressure and scCO2 trapping behavior, while lattice-Boltzmann simulations indicate a transition to a patchy mixed-wet state, increasing capillary trapping of scCO2 in rock pore spaces.

WATER RESOURCES RESEARCH (2021)

Article Engineering, Environmental

On assessing the tensile cracking pattern in brittle rocks and solids

Mehdi Serati et al.

Summary: This study aimed to identify fracture patterns and crack growth modes in brittle rocks and solids under induced tensile stresses, and investigate how the estimation of material tensile strength is influenced by fracture modes in the Brazilian test. Through ultra-high-speed photography and optical methods, eight distinct fracture propagation modes were identified, with findings suggesting that as material tensile strength increases, fracture behavior tends towards an explosion-like dominant tensile crack accompanied by large secondary shear fractures.

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2021)

Article Engineering, Chemical

Development and experimental validation of a texture-based 3D liberation model

Pratama Istiadi Guntoro et al.

Summary: Predicting mineral liberation through a texture-based 3D liberation model calibrated using experimental data measured in 3D mu CT can explain around 84% of the variance in the experimental liberation data. The generated particle population can be used for particle-based process simulation.

MINERALS ENGINEERING (2021)

Article Computer Science, Artificial Intelligence

Deep neural networks for improving physical accuracy of 2D and 3D multi-mineral segmentation of rock micro-CT images

Ying Da Wang et al.

Summary: The study tested the performance of 4 CNN architectures for segmentation of 3D micro-CT images of rock samples, and introduced a new hybrid U-Net and ResNet network architecture to improve accuracy.

APPLIED SOFT COMPUTING (2021)

Article Engineering, Geological

Characterisation of fracture evolution of a single cemented brittle grain using in-situ X-ray computed tomography

Sheng Jiang et al.

Summary: This paper investigates the diametrical fragmentation of a single brittle glass bead cemented by ductile epoxy resin using in-situ X-ray computed tomography, focusing on the fractures within the grain. The study reveals the complex nature of the fracture process and the dominant fracture mechanism during the fragmentation process.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2021)

Article Geosciences, Multidisciplinary

Textural Quantification and Classification of Drill Cores for Geometallurgy: Moving Toward 3D with X-ray Microcomputed Tomography (μCT)

Pratama Istiadi Guntoro et al.

NATURAL RESOURCES RESEARCH (2020)

Article Engineering, Chemical

Breakage process of mineral processing comminution machines - An approach to liberation

Parisa Semsari Parapari et al.

ADVANCED POWDER TECHNOLOGY (2020)

Article Green & Sustainable Science & Technology

In-situ pore-scale imaging and image-based modelling of capillary trapping for geological storage of CO2

P. E. Oren et al.

INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL (2019)

Article Energy & Fuels

Multiscale characterization of shale diffusivity using time-lapsed X-ray computed tomography and pore-level simulations

Yulai Zhang et al.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2019)

Article Engineering, Chemical

Ore texture breakage characterization and fragmentation into multiphase particles

Mehdi Parian et al.

POWDER TECHNOLOGY (2018)

Article Engineering, Geological

Quantification of microcrack characteristics and implications for stiffness and strength of granite

L. Griffiths et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2017)

Article Multidisciplinary Sciences

Pore configuration landscape of granular crystallization

M. Saadatfar et al.

NATURE COMMUNICATIONS (2017)

Article Computer Science, Interdisciplinary Applications

Segmentation of contacting soil particles in images by modified watershed analysis

Junxing Zheng et al.

COMPUTERS AND GEOTECHNICS (2016)

Article Metallurgy & Metallurgical Engineering

Heap leaching as a key technology for recovery of values from low-grade ores - A brief overview

Jochen Petersen

HYDROMETALLURGY (2016)

Review Engineering, Chemical

Definition of random and non-random breakage in mineral liberation - A review

R. A. Mariano et al.

MINERALS ENGINEERING (2016)

Article Metallurgy & Metallurgical Engineering

In situ leaching of copper: Challenges and future prospects

Laura Sinclair et al.

HYDROMETALLURGY (2015)

Article Engineering, Chemical

Numerical modelling of heterogeneous rock breakage behaviour based on texture images

Yicai Wang

MINERALS ENGINEERING (2015)

Article Engineering, Chemical

Development of a geometallurgical framework to quantify mineral textures for process prediction

Cecilia Lund et al.

MINERALS ENGINEERING (2015)

Article Materials Science, Multidisciplinary

Quasi-static and dynamic fracture behaviour of rock materials: phenomena and mechanisms

Q. B. Zhang et al.

INTERNATIONAL JOURNAL OF FRACTURE (2014)

Article Engineering, Chemical

Benchmarking comminution energy consumption for the processing of copper and gold ores

G. R. Ballantyne et al.

MINERALS ENGINEERING (2014)

Article Physics, Multidisciplinary

Mechanical Characterization of Partially Crystallized Sphere Packings

M. Hanifpour et al.

PHYSICAL REVIEW LETTERS (2014)

Review Environmental Sciences

Image processing of multiphase images obtained via X- ray microtomography: A review

Steffen Schlueter et al.

WATER RESOURCES RESEARCH (2014)

Article Geosciences, Multidisciplinary

Nature's refineries - Metals and metalloids in arc volcanoes

R. W. Henley et al.

EARTH-SCIENCE REVIEWS (2013)

Article Physics, Multidisciplinary

Geometrical Frustration in Amorphous and Partially Crystallized Packings of Spheres

N. Francois et al.

PHYSICAL REVIEW LETTERS (2013)

Article Engineering, Chemical

A liberation model for comminution based on probability theory

SL Gay

MINERALS ENGINEERING (2004)

Article Physics, Multidisciplinary

Techniques for image enhancement and segmentation of tomographic images of porous materials

AP Sheppard et al.

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS (2004)

Article Engineering, Chemical

Simple texture-based liberation modelling of ores

SL Gay

MINERALS ENGINEERING (2004)