Observation device and method for bubble nucleation and bubble growth process on mineral surface

Abstract

The invention discloses a device and method for observing the nucleation and growth process of bubbles on the surface of minerals. A vacuum pump, a pressure control component and a container are all placed on a workbench. The pumping end of the vacuum pump is connected to the pressure valve, pressure sensor, pressure gauge, pressure relief valve and container in order to adjust the pressure in the chamber under the pumping action of the vacuum pump, thus obtaining the vapor bubble or phase change caused by diffusion control. air bubbles. The interface bubbles prepared according to the device and method disclosed in the present invention belong to the nucleation of heterogeneous bubbles, and what are obtained are steam bubbles or air bubbles. The size of the pressure drop and the solution conditions can be changed according to the requirements, and then the mineral interface bubbles can be selectively controlled. The nature, quantity, size and contact angle of the mineral surface can effectively study the heterogeneous bubble nucleation and growth process on the mineral surface, which has great guiding significance for the application of heterogeneous bubble nucleation in the field of mineral flotation.

Description

technical field [0001] The invention relates to the technical field of flotation, in particular to an observation device and method for the nucleation and growth process of bubbles on the surface of minerals. Background technique [0002] In the field of flotation technology, as the rising carrier of the target minerals, the collision and adhesion efficiency of the flotation bubbles with the minerals play a very important role in the separation of the target minerals and non-target minerals. The traditional flotation bubbles are mostly However, due to the characteristics of the currently developed and utilized minerals gradually turning to "lean, fine, and miscellaneous", millimeter-level flotation bubbles can no longer meet the flotation of fine-grained minerals. Therefore, it is necessary to study micro-nano bubbles with smaller diameters , to improve the flotation efficiency of fine minerals. [0003] The existing micro-nano bubbles in the flotation system are mainly obt...

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Problems solved by technology

[0002] In the field of flotation technology, as the rising carrier of the target minerals, the collision and adhesion efficiency of the flotation bubbles with the minerals play a very important role in the separation of the target minerals and non-target minerals. The traditional flotation bubbles are mostly However, due to the characteristics of the currently developed and utilized minerals gradually turning to "lean, fine, and miscellaneous", millimeter-level flotation bubbles can no longer meet the flotation of fine-grained minerals. Therefore, it is necessary to study micro-nano bubbles with smaller diameters , to improve the flotation efficiency of fine minerals

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