The invention discloses a periodical vortex disturbance device for improving flotation selectivity, and relates to the technical field of micro-fine particle
mineral flotation, the periodical vortex disturbance device comprises a jet generator arranged on a flotation column
foam separation section, the jet generator comprises a
pipe body with a closed end and an open end, the open end extends into the flotation column
foam separation section in a sealed mode, and the closed end is connected with the
pipe body. The
pipe body is arranged in the flotation column
foam separation section, so that the pipe body is communicated with an inner cavity of the flotation column foam separation section, the pipe body has an expansion state and a contraction state which can be mutually switched, and when the pipe body is switched from the expansion state to the contraction state, ore pulp in the pipe body enters the flotation column foam separation section in a
jet flow state and forms a
jet flow field in the flotation column foam separation section. The
jet flow field can apply periodic vortex disturbance to a combination of rising fine non-target minerals and bubbles, and the intensity of the periodic jet flow field can be adjusted according to the properties of different hydrophobic fine
mineral particles, so that adhesion between the non-target minerals and the bubbles is destroyed, separation of the non-target minerals and the bubbles is promoted, and the separation efficiency of the non-target minerals and the bubbles is improved. Finally, the purpose of improving the flotation process selectivity is achieved.