Cyclone-static micro bubble flotation column ultrasonic enhanced pipe flow section mineralization device

Abstract

The invention discloses a cyclone-static micro bubble flotation column ultrasonic enhanced pipe flow section mineralization device. The cyclone-static micro bubble flotation column ultrasonic enhanced pipe flow section mineralization device comprises an upstream narrow pipe section, an ultrasonic enhanced region, a downstream wide pipe section, an ultrasonic generator, a plurality of ultrasonic oscillators, a resonance screw and a hydrophone. The ultrasonic oscillators are arranged inside the ultrasonic enhanced region, the ultrasonic generator is connected with the ultrasonic oscillators, and the resonance screw is arranged in the ultrasonic enhanced region and the downstream wide pipe section; and the hydrophone is arranged in the ultrasonic enhanced region and the downstream wide pipe section. According to the cyclone-static micro bubble flotation column ultrasonic enhanced pipe flow section mineralization device, the evenly-distributed ultrasonic oscillators are adopted, so that spreading of ultrasonic waves in the ultrasonic enhanced region is facilitated, and sound waves are spread to the upstream and the downstream at the same time with the same transmitting characteristics. The ultrasonic enhanced region is arranged so that ore pulp flowing through the region can bear the strong ultrasonic effect, vacuoles can be generated, disturbance to flow can be generated, continuous generation of the vacuoles can continuously generate pulsating flow, and accordingly the turbulence intensity is greatly improved. The resonance screw has the effects of flow disturbance and turbulence intensity improving.

Description

technical field [0001] The invention relates to a mineralization device for a pipe flow section of a cyclone-static microbubble flotation column, in particular to a mineralization device for an ultrasonically enhanced pipeflow section of a cyclone-static microbubble flotation column, which belongs to the technical field of mineral processing. Background technique [0002] In the prior art, cyclone-static microbubble flotation column (see figure 1 ), mainly used for the flotation of coal, non-ferrous metals and non-ferrous metals, mainly for the flotation of fine-grained and particulate minerals. Its main structure includes flotation column sorting section 11 (or column separation section), swirl section 12 (or swirl separation section), bubble generation and tube flow section (or collectively called tube flotation device) 15. . The pipe flow section 15 is a pipeline from the downstream of the bubble generator 14 of the flotation column to the inlet end of the swirl section...

AI Technical Summary

Problems solved by technology

However, the passive method has a limited increase in the turbulence intensity, and it is difficult to achieve the expected turbulence intensity. It is difficult to differentiate the turbulence intensity in the entire pipe flow section to adapt to the turbulence degree required by mineral particles in different size ranges in minerals.

For example, as a typical heterogeneous pipe flow section, the inverted U-shaped pipe section can increase the turbulence intensity compared with the straight pipe section, but it will also cause unfavorable characteristics such as uneven distribution of gas holdup in the pipe, large resistance, and easy wear.

The extension of the pipe flow section can increase the overall turbulent kinetic energy, but it will not change the peak value of the turbulent flow intensity, so the mineralization of fine-grained or ultra-fine-grained minerals will not be significantly enhanced, and in engineering practice, the extension of the pipe flow section It will increase the height of the corresponding flotation column section, which will increase the equipment cost and reduce the economic benefit

The method of installing a vortex generator is the most effective method of increasing the turbulence intensity in the passive method, but as a passive method, it is difficult to adjust the turbulence intensity in the pipe in real time, and the triangular pyramid-shaped vortex generation as used in the prior art It is inconvenient to process the device (Chinese invention patent application "A pipe flow device suitable for mineralization of fine-grained minerals" CN104511374A), and the gas-liquid-solid three-phase system in the pipe flow section can easily lead to wear of the vortex generator , which will reduce the economic benefits of the flotation process

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