Fly ash sintered hollow brick and manufacturing method

Abstract

The invention discloses a fly ash sintered hollow brick and a manufacturing method thereof. The fly ash sintered hollow brick is prepared from the following raw materials in parts by weight: 0.32-0.51part of fly ash, 1.2-1.9 parts of boiler discharged waste slag and 2.47-3.93 parts of clay. The fly ash sintered hollow brick has the following beneficial effects: 1, in the production process of thehollow brick, by adding and mixing a certain proportion of fly ash and the crushed boiler discharged waste slag, the performance of clay as an adhesive in the original process is changed, and problems of poor air permeability, high viscosity, poor plasticity, difficult dehydration of a semi-finished product, long drying period and the like are solved; and 2, in the firing process of the hollow brick, the use of external coal is reduced, the energy is greatly saved, and the environment-friendly effect is achieved. Through the process and the specially selected weight part ratio, the produced hollow brick is good in mechanical property, high in strength and convenient to construct, and has the characteristics of sound insulation, heat insulation, no hollowing, no cracking and no sinking.

Description

technical field [0001] The invention relates to the technical field of environmental protection building materials, in particular to a hollow brick sintered with fly ash and a manufacturing method thereof. Background technique [0002] At present, most of the raw materials for the production of hollow bricks use clay as the raw material. Clay contains less sand, is highly viscous, has high plasticity, and has poor air permeability. The energy is very large and cannot meet the requirements of environmental protection. [0003] At present, the drying process of hollow brick production is still the traditional natural drying method, which has a long drying cycle and is greatly affected by weather changes, which is a great constraint on product quality. [0004] Due to the fact that the main raw materials are fly ash and clay in the process of natural production of hollow bricks, the chemical composition of fly ash is very different, and it is not easy to be mastered. It is re...

AI Technical Summary

Problems solved by technology

[0002]Most of the raw materials for the production of hollow bricks now use clay as the raw material. The clay contains less sand, has high viscosity, high plasticity, and poor air permeability. It is easy to crack; during the firing process, it mainly relies on external coal input, which wastes a lot of energy and cannot meet the requirements of environmental protection

[0003]At present, the drying process of hollow brick production is still the traditional natural drying method, the drying cycle is long, and it is greatly affected by weather changes, which is a great constraint on product quality

[0004]The process of natural production of hollow bricks is due to the fact that the main raw materials are fly ash and clay, and the chemical composition of fly ash is very different, so it is not easy to be grasped by people. The constraints are very large, and the product quality varies greatly. Due to the complicated classification of clay, different clays have different chemical compositions. It is difficult for the brick industry to grasp its performance, which will seriously restrict product quality.