Graphene slurry preparation system with angle and preparation method thereof

Abstract

The invention discloses a graphene slurry preparation system with an angle and a preparation method thereof. The system comprises a stirring device, a sand mill and a ball mill, wherein the discharge outlet of the stirring device is communicated with the feed inlet of the sand mill; the discharge outlet of the sand mill is communicated with the feed inlet of the ball mill; the stirring device comprises a stirring bin, a driving component and a stirring component; the stirring component is mounted in the stirring bin; the driving component provides power for the stirring component; the stirring component comprises a stirring shaft I, a stirring shaft II and a stirring blade. Compared with the prior art, the system has the benefits that when the stirring shaft II rotates, the stirring blade rotates on a longitudinal surface, when the stirring shaft I rotates, the stirring blade rotates at 360 degrees and performs stirring by taking the vertical axis of the stirring shaft I as a rotating shaft, the stirring direction is all-sided, stirring is more thorough, and the system is beneficial to uniform mixing of powder materials and solvent.

Description

technical field [0001] The invention belongs to the field of graphene production, and relates to an angled graphene slurry preparation system and a preparation method thereof. Background technique [0002] Existing equipment combinations for the dispersion of high-viscosity and high-solid-content graphene slurry. When preparing graphene slurry, graphene powder is put into a solvent. Due to the large specific surface area of ​​graphene powder and strong liquid absorption, the graphite The olefin slurry basically has no fluidity, and it is difficult to mix it evenly by conventional stirring and high-speed shearing methods, resulting in inconsistent solid content of the slurry. In order to ensure that the graphene slurry is evenly dispersed, generally the solid content of the slurry can only be reduced to ensure its fluidity, which greatly increases the solvent cost and drying energy consumption of the user. [0003] In the prior art, equipment for producing high-viscosity slu...

AI Technical Summary

Problems solved by technology

[0007] Moreover, the dispersion efficiency of the conventional high-speed shearing method is low, and the dispersion effect is not good.

It has the following disadvantages: 1. Pickling graphene oxide, high specific surface graphene powder is difficult to disperse, conventional stirring and high-speed shearing methods cannot effectively disperse and mix graphene powder after it is put into the solvent, and the slurry is not uniform

2. High specific surface graphene slurry cannot increase the solid content

3. The dispersion efficiency of graphene slurry is low

The disadvantages are: the structure of the stirred tank is very simple, the barrel of the stirred tank is cylindrical, and the slurry is easy to stick to the wall of the tank, resulting in loss; the stirred tank is equipped with stirring blades, which is easy to cause the slurry to stick to the paddles. Reduce production efficiency; the inner wall of the stirring tank is made of stainless steel, which is also easy to cause the slurry to stick to it and not easy to flow

Due to the poor stirring effect of the existing stirring tank, multiple ball mills and sand mills are required in the subsequent dispersion process, which wastes energy and reduces production efficiency.

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