Xiahui Gui

Double Regularized Broad Learning System for Online Filter Cake Moisture Prediction in Dynamic Filtration

Hongyan Wang, Q. M. Jonathan Wu, Lanhao Wang, Yonggai Li et autres

The pressure filtration operation is a key stage in coal preparation, where the moisture content of filter cake critically affects subsequent process regulation and product quality. Conventional moisture detection mainly relies on offline measurements, which suffer from poor timeliness and considerable errors, …

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Turbulence-driven microbubble hydrodynamics and collision mechanisms for enhanced fine coal flotation

Shixiang Li, Shang Gao, Youbang Sun, Qianqian Lü et autres

Flotation of fine coal is often limited by low particle – bubble interaction. We quantify the hydrodynamics and kinetics of a Turbulent Microbubble Flotation Cell (TMFC) using computational fluid dynamics (CFD) coupled with a population balance model (PBM) and targeted experiments. In …

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New insights into enhancing flotation performance of low-rank coal by adding surfactant Triton X-100: Interparticle hydrophobic agglomeration and its interaction

Yunchang Li, Yangchao Xia, Deke Zhang, Ao Li et autres

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Machine learning-based analysis and prediction of coal flotation process parameters mechanisms

Jinyong Li, Deke Zhang, Yangchao Xia, Budeebazar Avid et autres

Flotation is a key separation technique in mineral processing, influenced by various process parameters. A deep understanding of its mechanisms and precise control is crucial for improving recovery efficiency. Traditional methods rely on empirical knowledge and trial-and-error, leading to high error rates …

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Selection of key properties and evaluation framework for coal slime collectors based on machine learning

Deke Zhang, Yunchang Li, Jinyong Li, Yangchao Xia et autres

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Investigating interaction force between single/mixed collector and low-rank coal surface via atomic force microscope collector microsphere probes: A novel approach

Yunchang Li, Deke Zhang, Budeebazar Avid, Yangchao Xia et autres

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Image and infrared backscattering feature fusion for high-accuracy intelligent detection of flotation tailings coal ash content

Hongyan Wang, Zongyang Kou, Lanhao Wang, Qinshan Liu et autres

The stability and optimization of coal flotation processes are critically constrained by the low accuracy of tailings ash content detection, which represents a persistent bottleneck for efficient closed-loop control. To overcome the limitations of laborious, delayed off-line assays and the insufficient accuracy …

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Effect of detachment velocity on the dynamic contact angles between bubble and glass plate with different contact angles

Wenqing Shi, Hongji Chen, Shihao Ding, Zhe Li et autres

In recent years, researchers have been dedicated to improving the understanding of detachment mechanisms to achieve efficient recovery of coarse particles. Traditional bubble detachment models are mostly based on quasi-static conditions and do not adequately account for the effect of detachment velocity. …

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Enhancing low-rank coal flotation efficiency through emulsified frothers: impacts and mechanistic insights

Mingjun Liu, Lei Wang, Yaowen Xing, Xiahui Gui

Emulsified frothers exhibit distinct frothing properties, yet their impact on low-rank coal flotation remains inadequately understood. This study evaluated the effects and mechanisms of four 2-Octanol emulsions – OE-1 (2-Octanol + sorbitan mono oleate (Span 80)), OE-2 (2-Octanol + sodium dodecyl benzene …

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Analyzing flotation bubble breakup behavior in stirring equipment based on SST k-ω model and VOF model

Chenyimin Yang, Youbang Sun, Xuesong Yang, Yaowen Xing et autres

Flotation is a pivotal technique for separating fine, low-grade minerals, where bubble dynamics and breakup mechanisms critically influence efficiency and selectivity. This study employs the SST k-ω turbulence model and VOF model to explore multiphase flow characteristics in a stirring tank at …

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Effect of fine slime on lignite flotation: focusing on particle-bubble mineralization and separation kinetic

Deke Zhang, Yunchang Li, Ao Li, Budeebazar Avid et autres

Lignite has a pronounced tendency to slime when in contact with water, generating substantial amounts of high-ash fine slime that adversely impact the quality of clean coal during flotation and lead to increased reagent consumption. This study systematically investigates the influence of …

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Novel evaluation index for assessing the flotation performance of oily collectors in coal processing

Deke Zhang, Yunchang Li, Hang Lu, Yangchao Xia et autres

Collectors are essential in flotation, and evaluating their performance is key for optimizing production and guiding collector development. However, existing evaluation systems, such as the conventional flotation improvement index, have limitations in accuracy and applicability. To address these shortcomings, a new flotation …

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