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Showing 1 to 8 of 8 for “"Hydrophobic-Hydrophilic Separation"”.
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Advancement of the Hydrophobic-Hydrophilic Separation Process
… available technology for ultrafine particles separation. However, froth flotation has extreme deficiencies for recovering ultrafine particles that are less than 30-50 μm in size for coal and 10-20 μm for minerals. Furthermore, dewatering of flotation products is difficult and costly using …
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Hydrophobic-Hydrophilic Separation Process for the Recovery of Ultrafine Particles
… froth flotation. A novel technology called the Hydrophobic-Hydrophilic Separation (HHS) process, developed at Virginia Tech, has been successfully applied to recover fine coal in previous research. The results of research into the HHS process showed that the process has no lower particle size …
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Processing of Low Rank Coal and Ultrafine Particle Processing by Hydrophobic-Hydrophilic Separation (HHS)
… mineral particles and low rank coal using the hydrophobic--hydrophilic separation (HHS) method. Several explorative experimental tests have been carried out to study the effect of the various physical and chemical parameters on the HHS process. In this study, the HHS process has been employed …
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The Production of Low Ash Coals Using the Hydrophobic-Hydrophilic Separation Process with Novel Developments
… mineral processing to separate material based on hydrophobicity. This process becomes less efficient, however, as particle size is reduced. Because of this ultrafine particles are often discarded prior to froth flotation, and contributes to a substantial amount of coal waste in impoundments. An …
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Development and Testing of a Mobile Pilot Plant for the Advancement and Scale-up of the Hydrophobic-Hydrophilic Separation Process
Fine particle separation is a grand challenge in the mining and mineral processing industry. The industry standard process, froth flotation, is extremely robust and adaptable; however, it is inefficient for particles less than 20 microns. Owing to this limitation, some mining sectors, such as coal, …
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Developing a Novel Ultrafine Coal Dewatering Process
… but has remained a great challenge. The hydrophobic-hydrophilic separation (HHS) method is a powerful technology to address this problem. However, organic solvents in solvent-coal slurries produced during HHS must be recovered for the method to be economically viable. Here, the …
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Rare Earth Extraction from Clayey Waste Materials by Alkali Pretreatment
… material was explored by froth flotation and the hydrophobic-hydrophilic separation (HHS). A final concentrate assaying 10,765 ppm of REEs and 71% of recovery was obtained by the HHS process, which was superior to flotation in dealing with ultrafine particles. The microscopic characterization of …
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Fundamental Studies on the Extraction of Rare Earth Elements from Ion Adsorption Clays
… by blunging and subsequently upgraded using the hydrophobic-hydrophilic separation (HHS) process. The results showed that blunging outperformed grinding in liberating the REE-bearing particles from the clayey materials in coal. It was shown that one can improve blunging by increasing the …