Effective slurry thick and stable discharging device and method

Abstract

The invention provides an effective slurry thick and stable discharging device and method and belongs to the technical field of flocculation settling. The device comprises a cabin body, transducer carrier tubes, sound / ultrasonic transducers, a digital controller, a rotation driving device, a mixing helix tube, a flocculant tube, an overflow pipe, a barretter, a carrier tube stabilizer and a sand outlet, wherein the transducer carrier tubes are arranged inside the cabin body, the rotation drive device is arranged at the upper end of the cabin body, and thus a rotation blind-less scanning systemis formed; the sound / ultrasonic transducers are respectively arranged at a settling section, a thickening section and a discharging section in each transducer carrier tube to form a sound field destabilization granulating active region, a sound field resonant draining thickening active region and a sound field excitation liquefying discharge active region respectively, and are connected with thesound / ultrasonic transducers through transducer connecting wires; the mixing helix tube is connected with the flocculant tube and is communicated with the barretter. The device has simple structure and process, and can realize quickly thick and stable discharging of slurry.

Description

technical field [0001] The invention relates to the technical field of flocculation and sedimentation, in particular to an efficient slurry thickening and stable discharge device and method. Background technique [0002] In modern sludge treatment and tailings treatment, the main development direction is the discharge of high-concentration dense bodies. Among them, the deep cone thickener is the main facility for fine particle treatment, and it is the premise and guarantee for the efficient and stable discharge of fine particles. [0003] In most thickening facilities, due to the slow concentration and drainage speed, the solid flux per unit area of ​​the thickening tank (bin) is low and the thickening speed is slow; due to insufficient drainage, the discharged slurry concentration is low and the underflow concentration is unstable. [0004] The vertical sand bin has the advantages of simple structure, convenient sand storage and sand discharge, etc. However, due to the smal...

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Problems solved by technology

However, due to the large area occupied by the deep cone thickener and the low production capacity per unit area, it cannot be quickly thickened into high-concentration and ultra-high-concentration slurry in a short period of time, and it is extremely difficult when the slurry concentration is unstable and the rake resistance increases. It is easy to cause the raking phenomenon, which will affect the normal production of the entire filling system

[0006] Ultrasound is widely used in food, medical, chemical and other fields, but the sound field is built into the thickener, and the mechanical action and cavitation effect generated by the non-contact of the sound field are rarely used in the fields of tailings thickening and sand discharge.

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