Non-autoclaved waste residue sand lime brick and preparation method thereof

Abstract

The invention discloses a non-autoclaved waste residue sand lime brick and a preparation method thereof. Waste materials discharged in an industry are selected, and a simple and convenient non-autoclaved process is used, so that the production cost and equipment investment of the conventional sand lime brick are greatly reduced and the intensity of a product reaches the standard of a building brick. The non-autoclaved waste residue sand lime brick comprises the raw materials in part by weight or volume: 30 to 300 parts of one or more of tailing sand, wind sand, and waste rock powder, 50 to 500 parts of one or more of active waste residue, 0 to 300 parts of coarse aggregate, 3 to 30 parts of cement, and a proper amount of water. The non-autoclaved waste residue sand lime brick also comprises one or more of the following materials in part by weight or volume: 0 to 300 parts of coagulant material, 0 to 200 parts of carbide slag, and 0 to 200 parts of chemical gypsum. The non-autoclaved waste residue sand lime brick is formed by stirring, shaking and pressing the raw materials. By the method, harmful industrial waste materials can be changed into favorable industrial waste materials, the secondary energy consumption of a steaming and pressing process is saved, the manufacturing method is easy to grasp, materials can be selected flexibly, materials can be selected according to the local conditions, and novel building materials with various specifications can be produced by replacing different moulds.

Description

technical field [0001] The invention relates to a waste slag-free brick, in particular to an autoclaved waste slag-free lime-sand brick prepared by using industrial waste and a preparation method thereof, belonging to the field of building materials. technical background [0002] Since traditional clay fired bricks need to occupy a large amount of valuable cultivated land resources and consume increasingly scarce fuel energy, the production and use of them have been banned by the state. At the same time, the country has issued a series of preferential policies to vigorously advocate the use of non-clay materials, especially the use of industrial waste to develop new wall materials to replace clay fired bricks. For this reason, some new wall materials that do not need to be sintered with clay came into being, such as the "Autoclaved Lime-sand Brick" and "Autoclaved Lime-sand Hollow Brick" promoted by the national ministerial standards, using lime, high-silica fine sand, etc. ...

AI Technical Summary

Problems solved by technology

However, because it has not fully utilized industrial waste residue in the use of raw materials, and still needs to consume a certain amount of steam energy, it needs to use expensive industrial steam boilers, pressure pipes, autoclaves, large pressure vessels, rail cars, etc. in terms of equipment investment. It leads to large investment, high cost and complicated process, which limits its greater development