Coal gangue building thermal insulation exterior wall brick and production method thereof

The invention discloses a coal gangue building thermal insulation exterior wall brick, which is prepared by the following raw materials, by weight, 50-70% of coal gangue, 3-12% of a plasticizing agent, 3-12% of a binder, 10-30% of a vitrifying agent, 2-5% of a foaming agent, and 0.1-0.3% of a pore adjusting agent. In addition, the present invention further provides a production method for the coal gangue building thermal insulation exterior wall brick. The thermal insulation exterior wall brick of the present invention has advantages of light weight, high strength, safety, aging resistance, low cost and the like, can be directly used for beautifying modification of the building, and has a certain bearing capacity. With the present invention, the harm to the environmental and the safety due to the coal gangue is eliminated, and the performances of the building thermal insulation material in our country can be improved. Compared to the organic thermal insulation material, the thermal insulation exterior wall brick of the present invention has advantages of good safety performance, low cost, simple construction, and good durability, and the industrial waste residue is utilized by thethermal insulation exterior wall brick of the present invention so as to reduce the land occupation and the environment pollution.