Flocculation Behavior of Ultrafine Silica Particles in Acid Leaching Pulp by Nonionic Polymeric Flocculants
نویسندگان
چکیده
Sedimentation of ultrafine silica particles that exist in acid leaching pulp and their separation from Pregnant Leach Solution largely determines the efficiency a hydrometallurgical process utilizing copper oxide ore. Thickener on larger scale can allow longer sedimentation, generating low overflow turbidity but high economic input. In this paper, flocculation behavior quartz sulfuric solution using nonionic flocculants polyethylene (PEO) polyacrylamide (PAM), as well ionic cofactor montmorillonite (MMT) tannic (TA), were investigated, with dynamic size flocs counts fines being monitored an situ particle measurement technique, namely focused beam reflectance (FBRM), under turbulent conditions. Attention was paid to variables affecting properties both physicochemical hydrodynamic aspects such shear intensity. The mechanism investigated zeta potential light scattering measurements. It found TA promotes bridging PEO-quartz by forming associative complexes clusters solution, while MMT electrostatically adsorbs surface, enhancing its PAM. Low benefited higher resistance compact structure provided PEO/PEO + TA/PAM MMT. Efficient solid–liquid achieved synergistic small molecule cofactors polymer flocculants.
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ژورنال
عنوان ژورنال: Minerals
سال: 2023
ISSN: ['2075-163X']
DOI: https://doi.org/10.3390/min13040582