Production process of autoclaved aerated concrete

Abstract

The invention relates to production process of building materials, particularly relates to production process of autoclaved aerated concrete, includes regular steps of preparing materials, pouring, cutting and autoclave, and also includes step of heat insulation and convalesce, and the covalesce is indoors with a room temperature between 40 to 60 DEG, after heat insulation and convalesce, clay body is proceeded with autoclave; the convalesce room is imported with waste steam discharged by covalesce workshop to maintain room temperature. The invention is added with a step of heat insulation and convalesce, such that clay body can proceed gas generation and thicking at a proper temperature basically, which solves a series of problems of clay body bubble, clay body boiling, ununiform gas generation, submerged shrink, model collapse, which affects quality of clay body, and at the same time, the waste stream is provided with comprehensive and effective use, energy-saving and environment-protective, fermentation time of covalesce is reduced for 1 to 2 hours than regular operation, and production efficiency is improved, and percent of pass of clay body (semi-manufactured goods) can be improved from original 87.3% to 99.8%, and then cost is saved.

Description

Technical field: [0001] The invention relates to a production process of building materials, in particular to a production process of autoclaved aerated concrete. Background technique: [0002] Air-entrained concrete is a lightweight porous building material. It is made of cement, lime, slag, fly ash, sand, gas-generating materials, etc., after grinding, batching, pouring, cutting, autoclaving and milling. made by other processes. In the production process of autoclaved aerated concrete, according to the characteristics that the green body must go through two stages: the formation of pores and the thickening (hardening) of the green body, it is necessary to make the green body expand stably without boiling and mold collapse. , In essence, it is to adapt the aluminum powder to gas and the thickening of the slurry. When the gas generation speed is faster than the slurry thickening, mold collapse will occur; when the gas generation is not smooth and the slurry thickens too fa...

AI Technical Summary

Problems solved by technology

[0003] In view of the lack of the production process of the above-mentioned conventional autoclaved aerated concrete, the applicant adheres to the spirit of research, innovation and excellence, and uses its professional vision and professional knowledge to study the relationship between the gasification reaction speed of aluminum powder and the temperature. Research and development, the higher the temperature, the faster the reaction, and the dissolution rate of the medium solution to the reactant and the reaction product increases correspondingly at a higher temperature. The experiment shows that the higher the temperature, the earlier the reaction starts, the faster the reaction speed, and the end of the reaction. The earlier the time; on the contrary, the reaction progress is slow and the time is prolonged