Fluent-based method for optimizing airflow separation of electrician-grade magnesium oxide powder

Abstract

The invention relates to a Fluent-based method for optimizing airflow separation of electrician-grade magnesia powder. The method comprises the following steps: establishing a geometric model of an airflow classifier in different regions; simulating a gas flowing process by adopting a three-dimensional steady-state turbulence model, establishing a mathematical model, and adopting control equationsincluding a continuity equation, a Navier-Stokes equation and a standard k epsilon model; carrying out mesh generation on the geometric model of the airflow classifier by adopting non-structural meshes to obtain a corresponding mesh file of the airflow classifier; performing two-phase flow simulation through simulation calculation to obtain a series of particle size distribution conditions of coarse powder product outlet particles of the airflow classifier at different rotating speeds; and collecting particle size distribution of coarse powder under different rotating speeds and air volumes,and finding out optimal operating parameters through comparison and used for actual production process control.

Description

technical field [0001] The invention relates to the separation of electrical grade magnesium oxide powder, in particular to a method for separating electrical grade magnesium oxide powder based on Fluent optimized air flow. Background technique [0002] Throughout the upstream and downstream industries of the magnesium chemical industry, electrical grade magnesium oxide has always been hailed as the pearl of the magnesium chemical industry, and it is also the commanding height of the magnesium chemical industry. Electrical grade magnesium oxide has excellent electrical insulation, high temperature resistance and thermal conductivity. It is a typical magnesium oxide product with high technological content and high added value. It is indispensable in the production of electric heating (tubular) components Insulating filling materials are widely used in nuclear energy, aerospace, home appliances and other fields, and have extremely important strategic value and market space. ...

AI Technical Summary

Problems solved by technology

If the mesh number is too large, the particle size is small, the surface area per unit weight is large, and it is easy to absorb moisture; if the mesh number is too small, the particles will be larger, and the heating wire will be damaged after rolling, which will affect the life of the electric heating tube.

[0004] At present, the processing equipment of electrical grade magnesium oxide powder in my country is outdated and the degree of automation is low, resulting in large fluctuations in product quality and poor product consistency

As a key process in the production process of electrical grade magnesium oxide, workers only adjust the parameters of the air classifier based on experience, without sufficient theoretical support

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