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High-strength quartz sand fine-powder aerated brick and production process thereof

A production process, quartz sand technology, applied in the field of aerated bricks, can solve the problems of less than 20% comprehensive utilization rate, occupying land, wasting resources, etc., and achieve the effects of enhancing strength, rational utilization and reducing pollution

Pending Publication Date: 2021-10-19
贵州凯得利建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country's iron ore dressing plants discharge nearly 300 million tons of tailings every year, while the comprehensive utilization rate is less than 20%. According to incomplete statistics, by the end of 2010, the stockpiling of tailings due to the development of mineral resources in my country has reached 10 billion tons Among them, the amount of iron tailings stockpiled accounts for nearly 1 / 3 of the total stockpiled tailings. A large amount of stockpiled tailings not only wastes resources, but also occupies land and causes environmental pollution.

Method used

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  • High-strength quartz sand fine-powder aerated brick and production process thereof
  • High-strength quartz sand fine-powder aerated brick and production process thereof
  • High-strength quartz sand fine-powder aerated brick and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-strength aerated brick made of quartz sand fine powder, prepared from the following materials in parts by weight:

[0027]

[0028] A production process of quartz sand fine powder high-strength aerated bricks, the steps are as follows:

[0029] S1. Iron tailings and quartz sand are sent to the ball mill through electromagnetic vibration feeder and belt conveyor. The finely ground iron tailings and quartz sand are sent to the powder batching bin respectively, and quicklime and gypsum are fed by electromagnetic vibration. Machine and belt conveyor are sent to the jaw crusher for crushing, and then sent to the ball mill through the screw conveyor. The ground materials are sent to the batching bin through the screw conveyor and bucket elevator respectively, while the cement and aluminum powder are directly crushed. Import into the batching bin;

[0030] S2. Iron tailings, quartz sand, quicklime, cement, aluminum powder and gypsum are sequentially sent to the auto...

Embodiment 2

[0036] A high-strength aerated brick made of quartz sand fine powder, prepared from the following materials in parts by weight:

[0037]

[0038] A production process of quartz sand fine powder high-strength aerated bricks, the steps are as follows:

[0039] S1. Iron tailings and quartz sand are sent to the ball mill through electromagnetic vibration feeder and belt conveyor. The finely ground iron tailings and quartz sand are sent to the powder batching bin respectively, and quicklime and gypsum are fed by electromagnetic vibration. Machine and belt conveyor are sent to the jaw crusher for crushing, and then sent to the ball mill through the screw conveyor. The ground materials are sent to the batching bin through the screw conveyor and bucket elevator respectively, while the cement and aluminum powder are directly crushed. Import into the batching bin;

[0040] S2. Iron tailings, quartz sand, quicklime, cement, aluminum powder and gypsum are sequentially sent to the auto...

Embodiment 3

[0046] A high-strength aerated brick made of quartz sand fine powder, prepared from the following materials in parts by weight:

[0047]

[0048] A production process of quartz sand fine powder high-strength aerated bricks, the steps are as follows:

[0049]S1. Iron tailings and quartz sand are sent to the ball mill through electromagnetic vibration feeder and belt conveyor. The finely ground iron tailings and quartz sand are sent to the powder batching bin respectively, and quicklime and gypsum are fed by electromagnetic vibration. Machine and belt conveyor are sent to the jaw crusher for crushing, and then sent to the ball mill through the screw conveyor. The ground materials are sent to the batching bin through the screw conveyor and bucket elevator respectively, while the cement and aluminum powder are directly crushed. Import into the batching bin;

[0050] S2. Iron tailings, quartz sand, quicklime, cement, aluminum powder and gypsum are sequentially sent to the autom...

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Abstract

The invention relates to the technical field of aerated bricks, and discloses a high-strength quartz sand fine-powder aerated brick. The aerated brick is characterized by being prepared from the following materials in parts by weight: 20-30 parts of iron tailings, 5-8 parts of quartz sand, 8.5-10.5 parts of quick lime, 5.5-7.6 parts of cement, 0.03-0.05 part of aluminum powder and 2.3-3.8 parts of gypsum. According to the high-strength quartz sand fine-powder aerated brick and a production process thereof, coal ash powder is replaced by the iron tailings, and the quartz sand is added, so the content of SiO2 is supplemented, and the strength of the aerated brick is enhanced; in addition, the iron tailings are rich in element content, and in an autoclaved curing process, the iron tailings, SiO2 and Ca(OH)2 undergo a hydration reaction to generate various hydrated calcium carbonate crystals, so the strength of the aerated brick is guaranteed; and moreover, reasonable utilization of the iron tailings is achieved, and pollution of the iron tailings to the environment is reduced while cost is reduced.

Description

technical field [0001] The invention relates to the technical field of aerated bricks, in particular to a high-strength aerated brick with fine powder of quartz sand and a production process thereof. Background technique [0002] Aerated bricks are "autoclaved aerated concrete blocks", referred to as aerated bricks, which are aerated concrete blocks produced by high-temperature autoclaved equipment. Aerated bricks are flexible because of their hollow properties, while the main body of the building is supported by reinforced concrete structures, and the bricks only play a filling role. When an earthquake occurs, the reinforced concrete structure will be deformed. If it is a solid brick, the reinforced concrete structure will have no place to expand and contract when it is deformed and backlogged, and it will burst and collapse. The use of hollow bricks can leave a good expansion space for reinforced concrete structures. [0003] Aerated bricks are mainly used for frame stru...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B28/00C04B111/40
CPCC04B28/00C04B2111/40C04B2201/50C04B14/06C04B22/064C04B22/04C04B22/143C04B18/12C04B38/02
Inventor 吴飞辉
Owner 贵州凯得利建材有限公司
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