Preparation method of high-purity ultrafine spherical graphite

Abstract

The application relates to a preparation method of high-purity superfine spherical graphite, and belongs to the technical field of spherical graphite processing. Raw material pretreatment: graphite raw materials are conveyed to a lined fluorine stirring tank through a corrosion-resistant screw conveyor, softened water is added into the stirring tank, the mass ratio of the graphite raw materials and the softened water is controlled to be 1:1, stirring is carried out at a rotating speed of 80-120 r / min for 10-15 min, and a mixture is obtained. The grinding aid formed by compounding anhydrous ethanol, acetone, oleic acid and stearic acid is used, plays multiple functions of efficient dispersion, lubrication and wear reduction, auxiliary grinding and surface modification in the airflow shaping process, the anhydrous ethanol and the acetone have moderate volatility and good wettability, can quickly form a uniform thin layer on the surface of graphite particles, reduce the cohesion between particles, effectively inhibit the agglomeration and adhesion of superfine graphite under high-speed impact, and ensure the uniform dispersion of particles in the airflow field.

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