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Environmentally-friendly aerated concrete block and preparation method thereof

A kind of air-entrained concrete, environment-friendly technology, applied in the direction of clay preparation equipment, mixing operation control, chemical instruments and methods, etc., can solve the problems such as difficult to remove and influence, and achieve the effect of small bulk density, high strength and good effect

Inactive Publication Date: 2019-05-03
咸阳非金属矿研究设计院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aerated concrete blocks containing ore tailings, especially gold mine tailings, are difficult to remove because there are many harmful ions in the gold mine tailings, such as formaldehyde, benzene, ammonia and other harmful substances, which affect people's health, and With the development of the construction industry, buildings are getting taller and more exotic in shape, and the requirements for the strength, density, and shrinkage value of aerated concrete blocks have been increased, which has great impact on the building's thermal insulation performance, sound absorption performance, Radioactivity has higher requirements, so it is imperative to develop aerated concrete blocks with better performance according to needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method comprises the following steps: (1) crushing gold mine slag to 100-150 mesh, and crushing quicklime and gypsum to 150 mesh.

[0023] (2) Attapulgite is calcined at 200°C to 350°C for 1h to 1.5h.

[0024] (3) Perlite is roasted at 1200℃~1350℃ for 0.2h~0.5h.

[0025] (4) After the non-metallic mineral tourmaline and roasted attapulgite and perlite are crushed to 150-200 mesh, mix them evenly.

[0026] (5) Stir gold mine tailings, tourmaline, attapulgite, perlite and mineral fiber in a mixer (800r / min~1000r / min) for 10-18min, add cement and stir for 18-22min, add gypsum and stir for 20 minutes -25min, and finally stand still for 8min.

[0027] (6) Add aluminum powder to the mixture after standing, stir for 5-10 minutes, and mix well to make a slurry.

[0028] (7) Pour the above-mentioned slurry into the mold for static maintenance at a temperature of 45°C-60°C and a hardening time of 0.5-3h.

[0029] (8) Cutting and autoclaving, the steam pressure...

Embodiment 1

[0031] This embodiment provides an environment-friendly aerated concrete block, which is made of the following raw materials in parts by weight: 50 parts by weight of gold mine tailings, 5 parts by weight of tourmaline, 3 parts by weight of attapulgite, and 6 parts by weight of perlite 1.0 parts by weight of mineral fiber, 10 parts by weight of cement, 15 parts by weight of quicklime, 0.06 parts by weight of aluminum powder, and 9.94 parts by weight of gypsum. Its preparation method comprises the following steps:

[0032] (1) Crushing gold mine slag to 100 mesh, quicklime and gypsum to 150 mesh.

[0033] (2) Attapulgite was calcined at 200°C for 1.5h.

[0034] (3) Perlite is roasted at 1250°C for 0.5h.

[0035] (4) After the non-metallic mineral tourmaline and roasted attapulgite and perlite are crushed to 150 mesh, mix them evenly.

[0036] (5) Stir gold mine tailings, tourmaline, attapulgite, perlite and mineral fiber in a mixer (850r / min) for 15 minutes, add cement and s...

Embodiment 2

[0041] This embodiment provides an environment-friendly aerated concrete block, which is made of the following raw materials in parts by weight: 48 parts by weight of gold mine tailings, 6 parts by weight of tourmaline, 5 parts by weight of attapulgite, and 7 parts by weight of perlite 1.5 parts by weight of mineral fiber, 8 parts by weight of cement, 13 parts by weight of quicklime, 0.08 parts by weight of aluminum powder, and 11.42 parts by weight of gypsum. Its preparation method comprises the following steps:

[0042] (1) Crushing gold mine slag to 120 mesh, quicklime and gypsum to 150 mesh.

[0043] (2) Attapulgite was calcined at 250°C for 1 hour.

[0044] (3) Perlite is roasted at 1300°C for 0.3h.

[0045] (4) After the non-metallic mineral tourmaline and calcined attapulgite are crushed to 180 mesh, mix them evenly.

[0046] (5) Stir gold mine tailings, tourmaline, attapulgite, perlite and mineral fiber in a mixer (900r / min) for 12 minutes, add cement and stir for 18 ...

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Abstract

The invention discloses an environmentally-friendly aerated concrete block. The environmentally-friendly aerated concrete block is prepared from the following raw materials by weight: 40 to 60 parts of gold ore tailings, 3 to 6 parts of tourmaline, 2 to 5 parts of attapulgite, 5 to 10 parts of perlite, 0.5 to 2 parts of mineral fiber, 8 to 12 parts of cement, 12 to 18 parts of quicklime, 0.05 to 0.1 part of aluminum powder and 6 to 15 parts of gypsum. The invention also provides a preparation method for the aerated concrete block. According to the invention, through the use of non-metallic minerals like the tourmaline, the attapulgite and the perlite, toxic and harmful substances of the gold ore tailings are adsorbed; through the use of the mineral fiber, the strength of the aerated concrete block is increased; meanwhile, the tourmaline can release negative ions and radiate far-infrared rays, and has the effect of stabilizing a spatial energy field to combine with heavy metals, so harmful substances are fixed.

Description

technical field [0001] The invention belongs to the technical field of bricks, and in particular relates to an environment-friendly aerated concrete block and a preparation method thereof. Background technique [0002] Air-entrained concrete block is a new type of wall building material that has emerged in recent years. It is mostly used in construction projects in the form of semi-finished products or prefabricated products. Partition walls and load-bearing walls have certain applications, with high use value and development prospects. It is also immeasurable. At present, in the aerated concrete block industry, the utilization rate of various wastes is getting higher and higher, especially ore tailings. Because of the siliceous and calcium raw materials, a large amount of ore tailings are used for In the aerated concrete block industry, it can be used instead of fly ash to speed up production and increase production output. However, the aerated concrete blocks containing o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02B28B11/24B28C7/00B28C7/02C04B111/40
Inventor 王鸽赵旋徐友宁雷建斌李博文杨智荣张红林徐光亮柯海玲王宏杨敏郭群赵琪张侃李建
Owner 咸阳非金属矿研究设计院有限公司
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