Quartz tailings heat-insulating building block and preparation method thereof

Abstract

The invention relates to the technical field of quartz tailings applied to building materials and especially relates to a quartz tailings heat-insulating building block and a preparation method thereof. The heat-insulating building block is prepared by combining a hollow block with a filling material; the raw materials of the hollow block and the filling material both comprise quartz tailings powder; the quartz tailings powder is formed by grinding the quartz tailings into fine powder, wherein the fineness is subjected to the screening treatment by adopting a square hole sieve with the size of aperture being 45mu m and the weight of screen residue is 10%; the content of silicon dioxide in the quartz tailings is 70%; the limitation of the raw material ingredients in the hollow block and the filling material is adopted, so that all the raw materials are interacted, especially, the synergic effect between the quartz tailings and the quick lime, the aluminum powder or cement is achieved; the content of the radioactive substance in the raw materials is reduced, so that the radioactivity is reduced and the quality of the heat-insulating building block is increased.

Description

technical field [0001] The invention relates to the technical field of using quartz tailings as building materials, in particular to a quartz tailings thermal insulation block and a preparation method thereof. Background technique [0002] Quartz tailings are waste residues discharged from the extraction of calcium fluoride from fluorite mines in chemical plants. A large amount of them are piled up as waste, which will not only cause serious environmental pollution, but also prevent a large number of useful components in the waste residue from being comprehensively utilized. , resulting in the waste of chemical plant raw materials and intermediate products, so that the resources on the earth cannot be rationally developed and utilized. [0003] Some researchers conducted a comprehensive analysis and research on the waste residues discharged from chemical plants, and used them in the construction industry, so that the waste residues in chemical plants were comprehensively uti...

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Problems solved by technology

[0004] It can be seen that the above process uses a large number of industrial wastes and tailings to prepare building bricks, which provides a feasible solution for the comprehensive utilization of waste residues, but different preparation schemes are required for different tailings, so as to make it meet the requirements, and those skilled in the art, through a large amount of research and discussion on the technical solutions in the prior art, found that the building bricks prepared by it have the defects of unstable strength and easy shrinkage, and its production cost is too high, and the production The cycle is too long and the process is rough

[0005] In addition, when quartz tailings are used as raw materials to produce construction products, due to the large amount of radioactive substances contained in them and the raw material components of quartz tailings itself are mainly silica, the performance parameters of the products are poor, making the preparation It is difficult for building material products to meet the requirements of national standards, making the quality of building material products poor; and, in the prior art, quartz tailings are mainly used as raw materials to prepare thermal insulation bricks, and quartz tailings are not used as raw materials to prepare thermal insulation bricks. Blocks, especially thermal insulation blocks prepared by compounding quartz tailings technical field

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