Review
Energy & Fuels
Guofa Wang, Huaiwei Ren, Guorui Zhao, Desheng Zhang, Zhiguo Wen, Lingyu Meng, Shixin Gong
Summary: This study examines the role of coal as China's basic energy source and focuses on the intelligent development of coal mines. It introduces the Chinese mode of intelligent mining and proposes classification and grading standards. The study establishes a digital logic model and information entity and knowledge map construction method to promote the development of intelligent coal mine systems. It also describes the top-level architecture of 5G+ intelligent coal mine systems and the progress in intelligent mining technology. The study analyzes the development of intelligent coal mines and proposes ideas for promoting their development.
INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY
(2022)
Article
Mining & Mineral Processing
Feiteng Zhang, Xiangyu Wang, Jianbiao Bai, Wenda Wu, Bowen Wu, Guanghui Wang
Summary: Pre-driven longwall retracement roadway (PLRR) is commonly used in large mine shaft. The study concludes that the cutting of roof with vertical hydraulic fracture (HF) at a specified position, known as fixed-length roof cutting, can reduce support load and maintain the integrity of immediate roof. An innovative construction method, based on the stress shadow effect (SSE), is proposed to create vertical HF that surpasses the limitations of axial and transverse hydraulic fracturing. The method improves the stability and deformation of the main PLRR after hydraulic fracturing.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2022)
Article
Mining & Mineral Processing
Haoteng Wang, Mingming He, Zhiqiang Zhang, Jiwei Zhu
Summary: The constant mi in the Hoek-Brown (H-B) criterion is a fundamental parameter for determining the compressive strength of rock. This paper proposes a new method based on drilling parameters to determine the constant mi. The accuracy of the proposed model is verified through drilling tests and comparison with laboratory measurements.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2022)
Review
Metallurgy & Metallurgical Engineering
Javier Rioyo, Sergio Tuset, Ramon Grau
Summary: This paper evaluates the sulfuric acid process for lithium extraction from spodumene and discusses methods for optimizing the process, including recycling residual lithium and saving energy.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
Article
Engineering, Ocean
Weijia Ma, You Qin, Kai Zhao, Guoxing Chen
Summary: The study highlights significant differences in liquefaction characteristics between saturated coral sand and quartz sand under different cyclic stress paths. A unique relationship between deviatoric strain amplitude and excess pore water pressure ratio can be established regardless of cyclic stress paths. Furthermore, the dissipative energy required to liquefaction triggering of coral sand is much larger than that of quartz sand.
MARINE GEORESOURCES & GEOTECHNOLOGY
(2022)
Review
Engineering, Chemical
Anne J. Whitworth, James Vaughan, Gordon Southam, Antony van der Ent, Philip N. Nkrumah, Xiaodong Ma, Anita Parbhakar-Fox
Summary: The increasing demand for critical metals in the transition to low-carbon economies and advancements in high-tech has led to a global drive to find and develop these resources. Mining and processing wastes can provide significant concentrations of critical metals, but the extraction process requires suitable technologies.
MINERALS ENGINEERING
(2022)
Article
Energy & Fuels
Kai Wang, Lihong Hu, Weili Sun, Haohao Fan
Summary: This study analyzed the kinetics characteristics of coal primary and secondary spontaneous combustion using temperature-programmed experiments, revealing the influence of pre-oxidation time on coal spontaneous combustion behaviors. The results showed that pre-oxidation time had significant effects on the spontaneous combustion characteristics and apparent activation energy of the oxidized coal.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2023)
Article
Mining & Mineral Processing
Xuejie Deng, Yu Li, Fei Wang, Xiaoming Shi, Yinchao Yang, Xichen Xu, Yanli Huang, Benjamin de Wit
Summary: This paper proposes microbial grouted backfill (MGB) as a potential solution to reduce the environmental impact of backfill mining. The effects of cementation solution concentration, volume ratio of bacterial solution to cementation solution, particle sizes of the aggregates, and the number of grouting batches on the mechanical properties of MGB are studied. The experimental results show that the strength of MGB increases with the increase in cementation solution concentration and the decrease in volume ratio of bacterial solution to cementation solution, with the peak strength achieved at a concentration of 2 mol/L and a volume ratio of 1:9. Graded MGB samples with particle sizes of 0.2 to 0.8 mm exhibit the highest strength.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2022)
Article
Mining & Mineral Processing
Liping Luo, Longhua Xu, Xinzhang Shi, Jinping Meng, Ruohua Liu
Summary: This study investigated the influence of grinding media with different shapes on the flotation performance of spodumene and its potential mechanism from microscale insights. The results showed that rod milled spodumene exhibited higher floatability compared to ball milled ones under anionic/cationic collectors system. The rod medium enhanced the adsorption of collectors on the spodumene surfaces, which can be attributed to the exposure of specific crystal planes and the rougher surface of rod milled products.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2022)
Article
Geology
Jiangning Yin, Nan Li
Summary: This study applied machine learning algorithms (XGBoost and RF models) to create mineral prospectivity mapping (MPM) for a specific area in southern Hunan Province, China. The models were optimized using a Bayesian optimization algorithm (BOA) to improve their performance. The results showed that the XGBoost model outperformed the RF model in terms of accuracy and stability, indicating its great potential for MPM.
ORE GEOLOGY REVIEWS
(2022)
Article
Mining & Mineral Processing
Ningning Zhang, Tian Pang, Rui Han, Songjiang Chen, Zhen Li, Yuexian Yu, Zhongyu Shi, Lijun Liu, Jinzhou Qu, Anning Zhou
Summary: In this paper, the interaction forces between diasporic bauxite minerals (diaspore and aluminosilicate minerals) and air bubbles were investigated using the extended DLVO theory. The results showed that the interactions were mainly repulsive in collectorless solution, and the electrolyte concentration had a significant influence on the interaction forces. The addition of collector reduced the adhesion energy barriers between the minerals and bubbles. Each mineral exhibited a specific interface interaction response with the bubbles under different collector types and pH values.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2022)
Review
Engineering, Chemical
Tina Chanda Phiri, Pritam Singh, Aleksandar N. Nikoloski
Summary: The mining industry faces challenges such as depletion of high-grade deposits, high energy cost for metal production, and environmental concerns associated with mining waste disposal. Copper slag, a major mining waste, is causing growing concern due to its large volumes and waste of valuable metals. Recycling and repurposing of copper slag using innovative technologies can create a resource for a circular economy, addressing these challenges and improving metal production and environmental impact.
MINERALS ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Chao Miao, Lixing Liang, Fan Zhang, Shumei Chen, Kaixuan Shang, Jinlong Jiang, Yi Zhang, Jing Ouyang
Summary: This review focuses on the processing and application of porous silicon materials derived from silicon-rich industrial solid wastes (SRISWs), summarizing the transformation methods and describing their research status in different scales. Possible issues in the application of SRISWs and in the preparation of functional porous materials are analyzed, and their development prospects are discussed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Qifeng Guo, Xun Xi, Shangtong Yang, Meifeng Cai
Summary: This study reviews and discusses technical strategies to achieve China's dual carbon targets in metal mines, including analyzing global carbon emissions and emission intensities from metal mining industries, examining the metal mining status and carbon emissions in China, reviewing advanced technologies for carbon mitigation and carbon sequestration in metal mines, and proposing a technical roadmap for achieving carbon neutrality.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Energy & Fuels
Moshood Onifade, Abiodun Ismail Lawal, Adeyemi Emman Aladejare, Samson Bada, Musa Adebayo Idris
Summary: The determination of the gross calorific value (GCV) of solid fuel is important for the design of combustion and thermal systems. In this study, empirical models were developed using soft computing and regression analysis to predict the GCV of coal samples from South African coalfields. The ANFIS model was found to be the most suitable for predicting the GCV.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2022)
Article
Engineering, Chemical
Jianwen Yu, Yanfeng Li, Yang Lv, Yuexin Han, Peng Gao
Summary: An innovative suspension magnetization roasting followed by magnetic separation process was developed to recover iron from high-iron red mud. Under the optimized conditions, an iron concentrate with high purity and recovery rate was obtained. The suspension magnetization roasting converted hematite into magnetite, improving the magnetism, and also allowed hematite and alumina to enter the iron concentrate, increasing the aluminum content.
MINERALS ENGINEERING
(2022)
Review
Materials Science, Multidisciplinary
Maohang Zhang, Baicheng Zhang, Yaojie Wen, Xuanhui Qu
Summary: This paper introduces the application studies of selective laser melting in the field of nickel-based superalloys, including the strengthening mechanism and phase change evolution, the influence of laser parameters and heat treatment process on mechanical properties, as well as the industrial applications and future prospects.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Geochemistry & Geophysics
Anna Vanderbruggen, Aliza Salces, Alexandra Ferreira, Martin Rudolph, Rodrigo Serna-Guerrero
Summary: Froth flotation is proposed as a method to separate anodic graphite particles from cathodic lithium metal oxides (LMOs) in the fine fraction of black mass from spent lithium-ion batteries. The flotation performance of a pyrolyzed black mass was improved by adding a pre-treatment step consisting of mechanical attrition with and without kerosene addition. The recovery of LMOs increased significantly, but the selectivity decreased.
Article
Engineering, Chemical
Shuyi Shuai, Zhiqiang Huang, Vladimir E. Burov, Vladimir Z. Poilov, Fangxu Li, Hongling Wang, Rukuan Liu, Shiyong Zhang, Chen Cheng, Wenyuan Li, Xinyang Yu, Guichun He, Weng Fu
Summary: This study focused on the adsorption characteristics and mechanism of a novel amidoxime surfactant, 3-dodecylamine propyl amidoxime (DPA), used as a collector for wolframite and calcite surfaces. The flotation experiment demonstrated that DPA had a significant separation effect on wolframite and calcite. The contact angle and zeta potential measurements, as well as FTIR spectral analysis, revealed that DPA exhibited strong electrostatic adsorption on the surface of wolframite, but minimal adsorption on calcite. DFT calculations indicated that DPA primarily affected the wolframite surface through the positively charged -C(NOH)N+H3 group. This provides a new approach for the flotation separation of wolframite and calcite.
MINERALS ENGINEERING
(2022)
Review
Metallurgy & Metallurgical Engineering
Swagat S. Rath, Hrushikesh Sahoo
Summary: The depletion of high-grade iron ores has led to the need for beneficiation of low-grade iron ores. Flotation is considered the most efficient method to increase the iron content of fine-grained ores that do not respond to gravity or size classification. Depressants are crucial in iron ore reverse flotation as they selectively make iron oxides hydrophilic and prevent them from entering the gangue-rich froth phase. Starch is widely used as a depressant in iron ore flotation. This paper reviews the origin and chemistry of starch, the mechanism of starch-iron oxide interaction, and the application of different types of starch and their alternatives in iron ore flotation.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2022)
