A5028627799- Minerals Flotation and Separation Techniques
- Tunneling and Rock Mechanics
- Granular flow and fluidized beds
- Geotechnical and Geomechanical Engineering
- Fluid Dynamics and Mixing
- Mineral Processing and Grinding
- Petroleum Processing and Analysis
- Metal Alloys Wear and Properties
- Belt Conveyor Systems Engineering
- Metallurgy and Material Forming
- Metallurgical Processes and Thermodynamics
- Advanced Measurement and Detection Methods
- Hand Gesture Recognition Systems
- Microfluidic and Bio-sensing Technologies
- Advanced machining processes and optimization
- Fluid Dynamics Simulations and Interactions
- DNA and Biological Computing
- Quantum Dots Synthesis And Properties
- Enhanced Oil Recovery Techniques
- Photonic and Optical Devices
- Video Surveillance and Tracking Methods
- Pickering emulsions and particle stabilization
- Iron oxide chemistry and applications
- Perovskite Materials and Applications
- Geochemistry and Elemental Analysis
Shandong University of Science and Technology
2020-2025
Abstract Ultrasonic pretreatment and synchronous ultrasonic flotation can strengthen the bubble mineralization process improve separation of fine minerals, but effect on dynamics is unclear. In this paper, probe was embedded in column as field source, a numerical model based test bed constructed with CFD method. Based this, movement behavior under different fields studied, combined analysis internal flow velocity pressure, mechanism action dynamic bubbles revealed. The results showed that...
Abstract Rock abrasivity is one of the main factors affecting wear rock-cutting tools, which usually quantified by CERCHAR Abrasivity Index (CAI). Researchers and engineers study tool predict life based on CAI rocks. However, there still a lack dataset rock properties, especially various This paper reports abrasive 10 kinds rocks, including sedimentary metamorphic igneous with aid Test digital measurement techniques. The comprises data, point cloud data for visualization, scratch photos,...
The position and posture of the hydraulic support seriously affect efficiency coal mining safety production. However, most current detection technologies have poor reliability, methods are difficult to adapt complex environment mines. To effectively monitor support, thereby improve mining, we propose a new method detect relative support. is based on mathematical idea that three points can determine plane. Firstly, use angle sensors displacement build device, STM32 microprocessor collect...
Ultrasonic flotation is useful for fine low-rank coal purification; however, the efficiency of ultrasonic still needs to be improved. Because dynamic behavior bubbles has significant effects on their efficiency, it was investigated under different gas input conditions with and without ultrasound using volume fluid method h-speed imaging. The results indicated that can influence final kinetic by changing morphology initial bubble. With an increase in size aspect ratio bubble, bubble...
Calcium ions are common in flotation process water, and have a significant effect on the molybdenite floatability, making separation of from other minerals more difficult. Therefore, to improve selectivity, research how calcium affect surface properties is great significance. In this study, various methods including tests, contact angle measurements, batch adsorption tests Density Functional Theory (DFT) simulations were carried out understand characteristics mechanism. Results measurements...
The extremely poor loading performance of a thin coal shearer drum affects the mining efficiency in seam seriously on account restriction by complicated environment and thickness. is influenced several complex factors, such as motion parameters structural parameters, including structure form hub. hub cylindrical general, order to study influence rate drum, seven drums with different forms structures were designed. complexity was studied discrete element method (DEM) simulation this paper....
The poor loading performance of shearer drums restricts the development and production efficiency coal in thin seams. Changing operation structural parameters can improve drum’s to some extent, but effect is not obvious. A two-segment differential rotational speed drum (TDRSD) was proposed after analyzing influence mechanism on particles. To further reveal principle, velocity, particles distribution, rate were analyzed. matching relationship helix angle between front rear are also discussed....
Abstract In the process of rock bolt support for roadway with floor heave, cannot reach bottom borehole smoothly due to influence collapse gravels around borehole. order solve problem difficult installation, auxiliary installation device drilling was innovatively designed. At same time, a new method put forward, in which bit installed at assist drilling. The simulated by co‐simulation discrete element (DEM) and multibody dynamics (MBD). axial resistance change law particles movement were...
Thin-coal-seam shearer mining efficiency is seriously restricted by the poor loading performance of drum. The drum to cracked coal lumps based on a screw-conveying mechanism, and its influenced many structural parameters, including width, helical angle, axial tilt number blades form diameter barrel. barrel directly influences envelope zone’s capacity, influence not yet clear. Therefore, this work first compared drum-loading results between experiments numerical modeling, proved that...
Ultrasonic flotation is widely used as an efficient mineral separation method. Its efficiency related to the adhesion behavior between fine particles and bubbles, which can be influenced by bubbles’ movement behavior. This paper two immersed ultrasonic vibration plates generate action investigated effect of on rising process bubbles. The distribution, aggregation fusion, velocity, other characteristics bubbles generated different needle apertures were studied experimental simulation methods....
ABSTRACT As the main component of thin coal seam shearers, drum bears functions loading and cutting, its performance has become an important factor restricting mining efficiency production safety. In response to problem low in installing this paper uses Discrete Element Method (DEM) study effects methods, helical angle drum, rotation speed, particle water content on rate. Research found that ejection method is much higher than pushing method. increases, average rate increases. speed wet...
Introduction: The application of ultrasound in mineral flotation has broad prospects. To further explore the mechanism flotation, an ultrasound-assisted experimental device was designed, and mass transfer characteristics its transducer were analyzed. Background: Ultrasound shown excellent prospects but ultrasonic technology is still laboratory testing stage. Objective: An advanced designed manufactured specifically for conducting ultrasonic-assisted experiments been developed to accelerate...
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