The invention relates to an ultrasonic wave-
hydrogen peroxide enhanced
zinc oxide smoke dust leaching method, and belongs to the technical field of wet
smelting. The ultrasonic wave-
hydrogen peroxide enhanced
zinc oxide smoke dust leaching method mainly comprises four steps of preparation of a mixed leaching agent, control of a liquid-
solid mass ratio, ultrasonic oxidation leaching and
filtration. The
ultrasonic technology and the
hydrogen peroxide serving as a strong oxidant are introduced into the process for leaching
zinc and
germanium from the zinc
oxide smoke dust, on the one hand, the
hydrogen peroxide is uniformly dispersed in a solution by utilizing the
ultrasonic technology, the particle size of the smoke dust is reduced, the contact area of the
hydrogen peroxide and the zinc oxide smoke dust is increased, and the oxidation efficiency and the
reaction rate are improved; and on the other hand,
hydrogen peroxide is accelerated to be cracked to generate an oxidizing
ion hydroxyl radical-OH which is stronger than hydrogen peroxide by utilizing the
cavitation effect and the chemical effect of ultrasonic
waves, the
thermal effect of the hydrogen peroxide enables the temperature of a reaction medium to rise, so that the
decomposition rate of H2O2 is accelerated, and the purposes of saving the dosage of hydrogen peroxide, improving the
reaction rate and oxidizing and decomposing
sulfide are achieved, so that the
leaching rate of zinc and
germanium is further improved.