Rotary graphene slurry preparation system and preparation method thereof

Abstract

The invention discloses a rotary graphene slurry preparation system and a preparation method thereof. The rotary graphene slurry preparation system comprises a stirring device, a sand mill and a ball mill. A discharging port of the stirring device is communicated with a feeding port of the sand mill, and a discharging port of the sand mill is communicated with a feeding port of the ball mill. The stirring device comprises a stirring chamber, a driving component and a stirring component, the stirring component is mounted in the stirring chamber, the driving component provides powder for the stirring component, and the stirring component comprises a stirring shaft I, a stirring shaft II and stirring blades. Compared with the prior art, the rotary graphene slurry preparation system and the preparation method thereof have advantages that the stirring blades rotate longitudinally when the stirring shaft II rotates, the stirring blades rotate by 360 degrees around the vertical axis of the stirring shaft I to realize stirring, and accordingly comprehensive stirring directions are achieved, stirring is more thorough, and uniform mixing of powder materials and solvents is benefited.

Description

technical field [0001] The invention belongs to the field of graphene production, and relates to a rotary 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 slur...

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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