Mchanistic study on the flotation of barite with C<sub>18</sub>H<sub>33</sub>NaO<sub>2</sub> under microwave radiation based on UV-visible spectrophotometric analysis

Abstract

In this study, based on the pure mineral flotation test of barite, the effect law of microwave on barite flotation was investigated by using UV-visible spectrophotometer (L5), solution chemistry calculation and Zeta potential, scanning electron microscope (SEM), and other testing methods; at the same time, red flotation kinetic analysis was carried out to deeply explore the mechanism of C18H33NaO2 flotation of barite under microwave radiation. Mineral flotation tests show that barite, deionized water flotation after microwave treatment, recovery increased by 2.67%, 3.35%, respectively, while the pulp and the pulp of chemically added ore microwave action reduced by 2.90%, 8.51%, respectively. Microwave action barite can improve flotation recovery (up to 95.27%), the mechanism of action for microwave heating to improve the positive electrical properties of the surface of barite, and its specific surface area increased to improve the adsorption rate of sodium oleate on the surface of barite, thereby improving the flotation recovery. The flotation kinetics analysis revealed that the k-value of the primary kinetic model is the most informative among the four models of flotation kinetics, and its fitting results can truly reflect the flotation results of barite before and after the microwave action. By analyzing the flotation adsorption experiments of sodium oleate trapped barite by microwave action, we can provide an important reference for the efficient flotation adsorption behavior of barite. The adsorption behavior of barite can provide an important reference.