Method for preparing expanded powder fireproof coating from perlite

Abstract

The invention relates to a method for preparing an expanded powder fireproof coating from perlite. The method comprises a bottom plate, a support frame and a screening device, wherein the support frame is mounted in the middle of the upper end of the bottom plate, a section of the support frame is of a U-shaped structure, and the screening device is mounted in the support frame. The method can solve the problems that when existing equipment is used for screening powder raw materials, a screening effect is poor, screening is uneven, a screen cannot be effectively vibrated, the raw materials cannot make full contact with the screen, the screening efficiency of the raw materials is affected, and when the existing equipment is used for screening the powder raw materials, the screen usually cannot be effectively cleaned, so that large-particle impurities in the raw materials are likely to block meshes of the screen, and subsequent screening of the raw materials is not facilitated. And generally, the screen cannot be effectively cleaned, so that large-particle impurities in the raw materials are easy to block meshes of the screen, and subsequent screening of the raw materials is not facilitated.

Description

technical field [0001] The invention relates to the field of fireproof paint processing, in particular to a method for preparing expansive powder fireproof paint from perlite. Background technique [0002] Perlite is a glassy rock, which can expand to about 20 times after crushing, screening, preheating, and instant roasting, forming expanded perlite with a cellular foam structure. Expanded perlite is extremely light in weight, has the characteristics of heat preservation, heat insulation, non-combustibility, non-toxicity, and good chemical stability. It is an important filler in fire-resistant coatings. When the fire retardant coating is heated, the perlite expands and foams to form a honeycomb foam structure to close the protected object, delay the transfer of heat to the substrate, and prevent the object from igniting or burning or losing strength due to temperature rise. [0003] At present, the existing powder fireproof coatings usually have the following defects in ...

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Problems solved by technology

[0005] The invention can solve the problem that the existing equipment has poor screening effect and uneven screening when screening powder raw materials, and cannot effectively vibrate the screen, so that the raw materials cannot be fully contacted with the screen, which affects the quality of the raw materials. Screening efficiency, and the existing equipment usually cannot effectively clean the screen when sieving powder raw materials, resulting in the large particles of impurities in the raw materials are easy to block the screen mesh, which is not conducive to the subsequent screening of raw materials, etc. problem

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