A kind of fire-free lightweight brick and its preparation method

Abstract

The invention discloses a burn-free light brick and a preparation method thereof. The burn-free light brick is prepared from the following raw materials: blast furnace slag, red mud, magnesite, dolomite and aluminum oxide fibers. The preparation method comprises the steps of firstly, adding diluted hydrochloric acid into the red mud, standing and aging, and drying the lower precipitate for later use; mixing the magnesite and the dolomite for presintering to obtain a mixed pre-sintered material; grinding the mixed pre-sintered material for later use; mixing the pretreated red mud and the ground mixed pre-sintered material with the blast furnace slag and the aluminum oxide fibers to obtain a mixed raw material, adding water into the mixed raw material, and stirring to obtain a standby material for the burn-free light brick; transferring the standby material into a brick making die, and molding by pressing so as to obtain a molded brick; spraying saline water onto the surface of the molded brick, drying and then soaking the brick into water, transferring the soaked brick into a place with the natural conditions, and storing to obtain the burn-free light brick. The burn-free light brick is prepared by taking industrial waste residue as a main raw material and does not need to be sintered at high temperature, so that the energy is saved, and the environment is protected; the burn-free light brick prepared by the method has the advantages of being light in mass, high in strength and fireproof.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an unfired lightweight brick and a preparation method thereof. Background technique [0002] At present, there are many types of wall bricks used in construction. Among them, the traditional red brick is made of clay as the main raw material and is sintered. Although the red brick is cheap and durable, there are problems such as small bricks, heavy weight, high soil consumption, and excessive energy consumption during the sintering process. . The unfired brick is a new type of wall brick made by using waste as the main raw material without high-temperature calcination, which saves energy and protects the environment. In addition, due to this kind of brick has high strength, good durability, standard size, complete shape, uniform color, and simple and natural appearance, it can be used as dry wall or any external decoration, and it has gradually become an alternative ...

AI Technical Summary

Problems solved by technology

However, the building unburned brick prepared by this patent contains nylon fibers, which reduces the high temperature resistance of the unburned brick

Images