A low-cost, environment-friendly preparation process of heated brick and its heated brick

Abstract

A low-cost preparation process of an environment-friendly high-temperature brick and the high-temperature brick. The preparation process includes steps of: 1) mixing the raw materials including, by weight, 18-22 parts of black mud, 18-22 parts of pressure-discharged mud, 55-65 parts of waste residue of refractory bricks, 0.03-0.05 parts of PVA, 0.4-0.5 parts of lignin, 0.75-0.81 parts of sodium metasilicate and 43-48 parts of water, ball-milling the mixture to form slurry, and spray-drying the slurry to obtain a high-temperature brick powder material; 2) placing the high-temperature brick powder material in a pressing mould to press-shape the high-temperature brick powder material, and sintering the material in a kiln to obtain a finish product. The high-temperature brick not only has high-temperature fireproof effect but also is higher in strength, can be repeatedly used, is greatly reduced in preparation cost, is more environment-friendly and energy-saving, and has simple preparationprocess.

Description

technical field [0001] The invention relates to the technical field of architectural ceramics, in particular to a low-cost, environment-friendly preparation process of heated bricks and the heated bricks. Background technique [0002] Existing ceramic tile production plants use roller kilns for firing and molding, and generally take 24-hour uninterrupted production. In the uninterrupted production process, in order to stabilize the quality of the product, the temperature, atmosphere and pressure of the kiln need to be kept stable. However, in actual production, due to production accidents or improper product connection, the phenomenon of empty kiln often occurs , that is, no bricks enter the kiln, resulting in empty firing of the kiln; the empty kiln will directly have a great impact on the temperature, atmosphere and pressure of the kiln. , the bricks fired under pressure are basically difficult to meet the quality control requirements, resulting in an increase in the rate...

AI Technical Summary

Problems solved by technology

In the uninterrupted production process, in order to stabilize the quality of the product, the temperature, atmosphere and pressure of the kiln need to be kept stable. However, in actual production, due to production accidents or improper product connection, the phenomenon of empty kiln often occurs , that is, no bricks enter the kiln, resulting in empty firing of the kiln; the empty kiln will directly have a great impact on the temperature, atmosphere and pressure of the kiln. , the bricks fired under pressure are basically difficult to meet the quality control requirements, resulting in an increase in the rate of defective products, and bricks are fed into the kiln after the kiln is empty. It often takes several hours to stabilize the kiln, which seriously affects production efficiency. Therefore, the direct loss caused by the empty kiln is huge

[0003] At present, warm bricks are usually introduced to solve the above-mentioned discontinuous production problem, but the production of traditional warm bricks generally uses higher temperature sand, stone powder, and mud with higher plasticity as raw materials, and natural mud and sand raw materials often have aluminum content If it fails to meet the requirements, it is still necessary to increase the temperature by adding chemical grade alumina, which leads to a great increase in the cost of raw materials, and in the production process, it is often easy to fail in the process of brick arrangement and transportation due to insufficient strength of heated bricks. Damage occurs, it is difficult to effectively reuse, and there are shortcomings such as low service life and unstable high-temperature fire resistance

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