DOI: 10.1016/j.apt.2023.104293 Corpus ID: 266306891; Ultrasound-enhanced separation characteristics of gas-solid fluidized bed for fine-grained fluorite ore @article{Zhu2024UltrasoundenhancedSC, title={Ultrasound-enhanced separation characteristics of gas-solid fluidized bed for fine-grained fluorite ore}, author={Lingtao …
WhatsApp: +86 18221755073The synergistic use of wave velocity fields and spatial b-value models reveals the relationship between stress migration behavior and stope structure changes due to …
WhatsApp: +86 18221755073However, to the best of our knowledge, a full spectrum analysis (especially in the megahertz range) and pressure mapping of the acoustic cavitation-induced shock waves associated with the high-intensity ultrasonic energy generated at low driving frequencies, i.e. 17–30 kHz (so called power ultrasound), have not been performed yet, whereas the ...
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WhatsApp: +86 182217550731 Introduction. The level and shape of the surface can be controlled by ultrasonic methods through measuring parameters of volume ultrasonic oscillations and surface Rayleigh …
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WhatsApp: +86 18221755073The aim of this work is to investigate possible use of ultrasound waves in the concentration of colemanite from fine wastes. The retention time, pulp density, amount of feed and particle size were varied to determine the optimum conditions. ... which were obtained from the concentration plant of Eti Holding A.S. Emet Colomanite mine work ...
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WhatsApp: +86 18221755073The simplest physical benefit of ultrasound in flotation is the removal of various undesired coatings from mineral surfaces, and this process is especially accomplished through cavitation.
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WhatsApp: +86 18221755073We used the direct body waves present at low frequencies (less than 100 Hz) in the reconstructed seismic Green's functions to invert for the 3D S-wave velocity structure of the mine. Our results revealed the existence of a high-velocity zone and a low-velocity zone that corresponded with known ore bodies.
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WhatsApp: +86 182217550732.1 Energy. Rock drilling, blasting, and comminution (crushing and grinding) consume a vast amount of energy in hard rock mines. As mentioned in Sect. 1, statistics from hard rock mines indicates that drilling and blasting consumes 2% and comminution does 53% of the total energy input in the whole production chain from mining to mineral …
WhatsApp: +86 182217550731. Introduction. Mining activities produce high amounts of solid and liquid waste including mine tailings, which are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore.Tailings contain harmful quantities of toxic substances such as acid-generating sulphide minerals …
WhatsApp: +86 18221755073This chapter deals with the application of power ultrasound in the mining industry. The uses of power ultrasound are addressed in three aspects: (1) …
WhatsApp: +86 18221755073Li et al. probed the influence of ultrasound wave on NH 3 –(NH 4) 2 SO 4 leaching of Zn from a low-grade zinc oxide ore. They found that ultrasound increased the leaching ratio of Zn mainly by accelerating the leaching rate and shortening the leaching duration at lower ammonium sulfate concentrations, with 83.33% of Zn being recovered …
WhatsApp: +86 18221755073The gold ore was obtained from a gold mine in Yunnan. The particle size is less than 200 mesh.The minerals are mainly sulfide quartz and clay. The particle size of gold is within 0.3–5 µm, so it belongs to invisible gold.The elemental composition of the minerals obtained by inductively couple plasma optical emission spectrometer (ICP …
WhatsApp: +86 18221755073An ultrasound wave is a pressure perturbation that travels through a medium at a well-defined speed. We can better understand this wave phenomenon by observing the waves on the surface of a pond that originate from the impact of a pebble thrown into the water. The wave originates from the initial disturbance of the water surface.
WhatsApp: +86 18221755073This work aimed at investigating the impact of simultaneously used ultrasonic waves under variant operating configurations on the flotation of representative porphyry copper ore during rougher and re …
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WhatsApp: +86 18221755073The SEM images of raw ore, conventional, and ultrasound leaching concentrates are given in Fig. 11. Compared to the raw ore and CL concentrate, the reduction in particle size of the concentrate for ultrasound-assisted leaching supported the occurrence of particle fractures, which was verified by the comparative results of SEM …
WhatsApp: +86 18221755073The variation of ultrasound wave velocities in solids under stresses is called acoustoelastic effect. This influence of the stresses on the ultrasound velocity variation is very weak. To evaluate elastic and plastic deformation amplitudes, Sato [4] investigated, by acoustoelastic method, the distribution of the stress state inside metals. The ...
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