Production method for magnesium oxide board and production method for multi-layer composite magnesium oxide board material

Abstract

The invention discloses a production method for a magnesium oxide board and a multi-layer composite magnesium oxide board material. The production method for the magnesium oxide board comprises the steps of material dissolving, material blending, high-speed material mixing, kneading and internal mixing, vacuum dehumidifying and extrusion molding to produce a finished-product magnesium oxide board without a glass fiber cloth layer. The production method for the multi-layer composite magnesium oxide board material is that the finished-product magnesium oxide board and other material layers are compounded to obtain the multi-layer composite magnesium oxide board material. By means of the production method for the magnesium oxide board and the production method for the multi-layer composite magnesium oxide board material, magnesium oxide board continuous production is achieved, the curing time is short in the production process, the production efficiency is high, the production cost is low, the produced magnesium oxide board does not contain glass fiber cloth, production is simpler, and the produced magnesium oxide board is extremely small in thickness error, stable in size and high in structural strength.

Description

technical field [0001] The invention relates to the technical field of glass magnesium boards, in particular to a production method of glass magnesium boards and a production method of multilayer composite glass magnesium boards. Background technique [0002] Glass magnesium fireproof board is also called glass magnesium board, magnesium oxide board, magnesite board, and magnesium board. The material components for the production of glass magnesium fireproof boards are active high-purity magnesium oxide (MgO), high-quality magnesium chloride (MgCl 2 ), alkali-resistant glass fiber cloth, plant fiber, non-combustible light perlite, chemically stable lithopone, high molecular polymer and high-performance modifier. [0003] At present, in the production process of the glass magnesium board, the components used to produce the glass magnesium board are first mixed and stirred to obtain the slurry raw material, and then poured into the mold for molding. The forming process is gen...

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Problems solved by technology

[0003] At present, in the production process of the glass magnesium board, the components used to produce the glass magnesium board are first mixed and stirred to obtain the slurry raw material, and then poured into the mold for molding. The forming process is generally a layer of slurry raw material and a layer Glass fiber cloth, or at least add glass fiber cloth to the bottom layer and surface layer, and then immerse it in warm water to solidify, and finally get a glass magnesium board. The glass magnesium board is formed piece by piece, not continuous production, and the glass magnesium board The curing time is long, and many molding molds are required to produce glass magnesium boards of various sizes, which leads to extremely low production efficiency and high production costs of glass magnesium boards. In addition, the thickness error of the formed glass magnesium boards is relatively small. Large, high moisture content, unstable thickness and size, the formed glass magnesium board needs various mechanical processing after a long time of curing treatment, in order to control the thickness of the glass magnesium board within the allowable thickness deviation range, follow-up There are many process steps, and the loss in the process is very large, which is also an important reason for the high production cost of the glass magnesium board, so it is necessary to improve it.

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