Particle size grading device and process for superfine powder suspension

Abstract

The invention provides a particle size grading device and process for superfine powder suspension liquid. The device comprises a raw material tank, a feeding pump, a membrane grading pool set, a self-sucking pump set, an air blower and a finished product tank which are sequentially arranged and communicated. The outlet of the raw material tank is communicated with the inlet of the feeding pump, and the inlet of the membrane classification pool group is communicated with the outlet of the feeding pump; the finished product tank is connected with an outlet of the self-priming pump set, and the air blower is connected with the membrane classification pool set; the apertures of the membrane assemblies arranged in the membrane grading pool group are gradually reduced; powder mixed liquid in the membrane grading pool group automatically flows into the raw material tank from the upper part of the pool body under the action of gravity to realize powder grading; by means of the particle size grading device and the particle size grading process, the particle size of the powder suspension liquid can be graded to the required particle size, particle size distribution is narrow, and the device can achieve automatic operation.

Description

technical field [0001] The invention relates to the technical field of suspension screening devices and processes, in particular to a particle size classification device and a particle size classification process for ultrafine powder suspensions. Background technique [0002] Ultrafine powder technology is widely used in many fields such as medicine, chemical industry, electronics, energy and building decoration. Among them, ultrafine powder with excellent optical, electrical and magnetic properties is widely used in capacitors, electro-optical devices, iron The preparation of electronic components such as electrical memory, but also put forward higher requirements for the particle size grade of ultrafine powder (among them, the powder with particle size less than 10μm is called ultrafine powder, and the particle size between 1-100μm is called ultrafine powder. The powders are micron powders, those between 0.1-1μm are sub-micron powders, and those between 1-100nm are nano-po...

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Problems solved by technology

[0003] In the process of industrial production of fine powder, it will be accompanied by a large amount of powder suspension. The powder suspension in the prior art is generally a powder mixture of particles with different particle sizes; in the process of industrial application of powder, often need Using powder particles of a specific particle size grade, if the particle size of the powder particles is too large or too small in different scenarios, it will affect the performance of the molded product; at the same time, the performance of the powder cannot be fully utilized in the industry

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