Wet refractory mortar and preparation method thereof

Abstract

The invention relates to a wet refractory mortar and a preparation method thereof. The wet refractory mortar comprises the raw materials in percentage by weight: 60-90% of main raw material of the refractory materials, 1-15% of micro powder, 0.5-5% of bentonite, 0.5-10% of soft clay, 0-5% of methylcellulose, 0-5% of dextrin, 0.05-0.5% of dispersing agent (admixture), 3-10% of glycerin (admixture), 0-5% of water-soluble poly-glyceride (admixture) and 5-25% of clean tap water (admixture). The preparation method comprises the following steps of: preparing the poly-glyceride glycerin solution; preparing the dry powdery semi-finished product; adding the clean tap water for wet mixing; adding the poly-glyceride glycerin solution to be mixed; packing hermetically by using plastic bags; packing hermetically by using hard plastic buckets; and storing and transporting in the cool. The refractory mortar of the invention is directly manufactured into finished products to effectively control the product quality; is in a wet state during the storing and transporting and using to lower the user cost and labor intensity of workers, and avoid the environmental pollution caused in the construction site; and is taken according to need to reduce the unnecessary waste.

Description

Technical field [0001] The invention relates to a refractory mud in a wet state during storage, transportation and use, belonging to the field of refractory materials. Background technique [0002] Refractory mud is composed of refractory raw materials, binders and admixtures. It is a joint material for shaped refractory products. The purpose is to bond individual products into a whole and improve the service life and safety of high-temperature kilns and thermal equipment. [0003] According to the main raw materials, refractory mud can be divided into clay, high alumina, corundum, mullite, silicon, magnesium and carbon-containing mud, etc.; according to the type of binder, it can be divided into phosphoric acid or phosphate combined mud, water Glass bonded mud and organic bonded mud, etc. Except for the organic binder mud, the rest of the refractory mud contains water. [0004] The quality of refractory mud is directly related to its construction and use performance, and ...

AI Technical Summary

Problems solved by technology

Due to the uneven professional quality of on-site operators, poor process control ability, or lack of professional knowledge in refractory mud, the degree of dryness and uniformity of the finished product after mixing is quite different, which directly affects the construction performance and use effect of the mud.

For example: if the mud is too dry, the smearing performance of the mud is poor, which will increase the mortar joints and unsaturation between the products, and the mud dries quickly and the bonding time is short; if the mud is too thin, it is difficult to ensure the thickness of the mortar joints. The shrinkage is also larger at high temperature;

[0008] (2) High cost and high labor intensity

Due to the need to add liquid binder or water to stir at the construction site, there must be a certain construction site, equipment and operators, which requires increased investment and cost for users, and the labor intensity of workers is also relatively high;

[0009] (3) pollute the environment

Dry powder semi-finished products need to be transported, poured, stirred, etc. at the construction site. These operations will inevitably generate dust and mud spots, causing environmental pollution;

[0010] (4) Larger waste

[0014] (2) Phosphoric acid and phosphate binders will also react with elemental iron to generate gas, which will cause the mud to swell and reduce the density. It is necessary to add two processes of trapped material and secondary mixing at the construction site;

[0015] (3) The water glass binder will interact with CO in the air 2 Reaction precipitates insoluble silicic acid gel and silicate compounds, causing the mud to harden and lose its usability

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