Quartz tailing brick and preparation method thereof

Abstract

The invention relates to the technical field of constructional autoclaved bricks, especially to a quartz tailing brick and a preparation method thereof. The quartz tailing brick comprises the following raw materials by weight: 65 to 75 parts of quartz tailings, 5 to 7 parts of quicklime and 23 to 25 parts of an auxiliary material. According to the invention, double hydraulic forming is employed, so a forming pressure is large, a compact interfacial structure of raw materials is ensured, and a blank has high strength; an autoclave is employed and silicon, aluminum and calcium materials undergo a hydration reaction under proper pressure and temperature conditions in saturated vapor, so a silicate product with certain flexural and compressive strength is formed; waste residues discharged by chemical enterprises are used, so the waste is turned into the valuable, cyclic utilization of resources is realized, the environment is protected, environmental pollution is treated, industrial waste residues are comprehensively treated and utilized, and a substantial environmental protection value and substantial economic benefits are obtained.

Description

technical field [0001] The invention relates to the technical field of building material autoclaved bricks, in particular to a quartz tailing brick and a preparation method thereof. Background technique [0002] Quartz tailings are waste residues discharged from the extraction of calcium fluoride from fluorite mines by 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] For this reason, some researchers have conducted 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 have been comprehensively utiliz...

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Problems solved by technology

[0004] For example, the patent No. CN101318805A "Using Urban Sludge and Wet Fly Ash to Produce Sintered Permeable Bricks" discloses a kind of permeable bricks made of organic matter in sludge and unburned carbon in fly ash for internal combustion. The application number is 201110250171.6 "A Manufacture of Autoclaved Permeable Bricks Using Lake Sludge" discloses the use of lake sludge to manufacture building bricks by autoclaving technology. The application number is 201210227247.8 "A Process for Making Steam-cured Bricks Using Molybdenum Tailings" discloses A construction brick made by using molybdenum tailings, slag, quicklime and gypsum to be ground and screened separately, mixed and stirred, pressed, and autoclaved for curing; the application number is 201210518805.6 "A Method for Making Autoclaved Bricks Using Gold Tailings" Method" discloses a method of oxidizing gold tailings, adding them to a silo, adding crushed lime and gypsum, adding water to stir and mix them, digesting them for 2-3 hours, rolling them for 2-3 hours, pressing them into shape, resting, autoclaving for 5-10 hours, cooling out of the kettle, Autoclaved brick products are obtained; it can be seen that the above process uses a large amount of waste 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 , and then it can make it meet the requirements, and those skilled in the art, through a lot of research and discussion on the technical solutions in the prior art, found that the building bricks prepared by them have the defects of easy water absorption and shrinkage, and their resistance The flexural compressive strength is not ideal

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