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A kind of quartz tailings brick and preparation method thereof

A technology of quartz tailings and tailings bricks, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of unsatisfactory flexural and compressive strength, easy shrinkage, and easy water absorption of building bricks, etc. problems, achieve significant environmental protection value and economic benefits, and improve the effect of product added value

Active Publication Date: 2016-02-24
贵州省建筑材料科学研究设计院有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A kind of quartz tailings brick and preparation method thereof
  • A kind of quartz tailings brick and preparation method thereof
  • A kind of quartz tailings brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A quartz tailing brick, the raw materials of which are: 65kg of quartz tailings, 7kg of quicklime, and 23kg of sand. The quartz tailings are extracted from the waste slag discharged from the fluorite mine in the chemical plant. Its main component is Content: SiO 2 95.01%, Fe 2 o 3 1.08%, Al 2 o 3 1.06%, CaO1.60%, MgO0.14%, K 2 O0.17%, Na 2 O0.15%, sulfide (as SO 3 Total) 0.15%, Cl — 0.01%, Loss0.93%;

[0042] Its preparation method is:

[0043] (1) Raw material grinding: the raw materials are respectively selected as: quartz tailings, quicklime, sand; specifically, the waste slag extracted from calcium fluoride from the fluorite mine is tested for component content, and its main raw material components are adjusted. Then pass through the grinding machine, first grind at 800r / min for 1h, then carry out high-speed grinding at 1300r / min for 30min at the rotating speed of the grinding machine, and after detecting and adjusting the main component content of the quar...

Embodiment 2

[0051] A kind of preparation method of quartz tailing brick, on the basis of embodiment 1, other steps are the same as embodiment, by selecting SiO 2 95.01kg, Fe 2 o 3 1.08kg, Al 2 o 3 1.06kg, CaO1.60kg, MgO0.14kg, K 2 O0.17kg, Na 2 O0.15kg, sulfide (as SO 3 Total) 0.15kg, Cl — 0.01kg, Loss0.93kg, after mixing, then detect its component content, and adjust its main raw material components, then pass through the grinder, first grind at 900r / min for 1.5h, and then grind at the speed of the grinder at 1350r Grinding at high speed for 30min at 1650r / min, and testing and adjusting the main component content of the quartz tailings, then passing through the grinder at 1650r / min, grinding for 15min, and then sieving with a square hole sieve, with a sieve residue of 15%. The fineness is 0.08mm, and it is sieved with a square hole sieve, and the specific surface area is 3000cm 2 / g; and digestion process 12h in the digestion step; in the rolling forming step, step 4) the digeste...

Embodiment 3

[0053] A kind of preparation method of quartz tailing brick, on the basis of embodiment 1, other steps are the same as embodiment, by selecting SiO 2 95.01g, Fe 2 o 3 1.08g, Al 2 o 3 1.06g, CaO1.60g, MgO0.14g, K 2 O0.17g, Na 2 O0.15g, sulfide (as SO 3 Count) 0.15g, Cl — 0.01g, Loss0.93g, after mixing, then detect its component content, and adjust its main raw material components, then pass through the grinder, first grind at 1000r / min for 2h, and then grind at the speed of the grinder at 1400r / min Grinding at high speed for 30 minutes at 1 min, and detecting and adjusting the main component content of the quartz tailings, then passing through the grinder at 1800r / min, grinding for 15 min, and then sieving with a square hole sieve, with a sieve residue of 20%. The density is 0.08mm, and it is sieved with a square hole sieve, and the specific surface area is 3300cm 2 / g; and digestion process 8h in the digestion step; in the rolling forming step, step 4) the digested bat...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B30/00C04B18/12
CPCY02W30/91
Inventor 王建义白燕张雪敏贺勇李云蒋韬宋美
Owner 贵州省建筑材料科学研究设计院有限责任公司
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