Venturi tube cavitation strengthening device for mineral flotation

Abstract

The invention discloses a Venturi tube cavitation strengthening device for mineral flotation, and relates to the technical field of hydrodynamic cavitation, the input ends of an arc-shaped throat pipe and a throat pipe section are communicated with the output end of an inlet pipe, and the output end of the throat pipe section is connected with an expansion section; the expansion section is a diverging pipe, and a bluff body is arranged in the expansion section through a fixing rod; the arc-shaped throat pipe is communicated with an annular pipe, and a flow dividing throat pipe is arranged at the output end of the annular pipe. And the output end of the shunting throat pipe is arranged in the expansion section and is arranged above the bluff body. By arranging the arc-shaped throat pipe and the annular pipe, when water flow enters, the water flow is shunted through the multiple shunting throat pipes, cavitation discharge is conducted in the annular pipe, the water flow normally passing through the Venturi pipe is shunted again through the bluff body to be subjected to cavitation, and therefore the multiple-cavitation effect is achieved; the problem that cavitation is not thorough due to the fact that only a single cavitation path exists in a traditional venturi tube is solved, and the venturi tube has the advantage that cavitation efficiency is enhanced by multiple times of cavitation in a limited space.

Description

technical field [0001] The invention relates to the technical field of hydraulic cavitation, in particular to a Venturi tube cavitation strengthening device for mineral flotation. Background technique [0002] Tailings often contain many particulate minerals. It is an important science and technology to use advanced technology to "turn waste into treasure" and large-scale utilization of tailings resources. The tailings extraction process uses a Venturi tube with a flotation column to float mineral particles through micro-nano bubbles. Among them, the Venturi tube hydraulic cavitation reactor is a key technology for separating and recovering useful particulate minerals in tailings, and its cavitation performance directly affects the extraction efficiency of tailings. Cavitation is the process of the formation, development and collapse of vapor or gas cavities (cavitations) inside the liquid or on the liquid-solid interface when the local pressure in the liquid decreases. Ven...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a venturi tube cavitation strengthening device for mineral flotation, which has the advantage of multiple cavitation, and solves the problem that there is only one water passage in the traditional venturi tube. The cavitation path is single and the cavitation is not complete, and the cavitation rate of a single Venturi tube is further improved by a variety of ways to strengthen the occurrence of cavitation

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