Cylindrical attapulgite fly ash ceramsites

A technology of fly ash ceramsite and attapulgite, which is applied in the production and application of ceramic products and ceramic materials. It can solve the problems of decreased strength of finished products, less porosity, and low strength of ceramsite, so as to achieve fast cooling speed and reduce occupancy. The effect of low land and sintering temperature

Active Publication Date: 2012-06-27
南通沪联航海设备有限公司
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0005] The disadvantage of the above-mentioned patents is: the high-strength fly ash ceramsite is composed of fly ash, clay, combustion-supporting materials, with or without additives, Although the fly ash can generate pores in the ceramsite after burning, the amount of pores is relatively small, and the viscosity of the clay is lower than 200mPa·s. Simply use clay and fly ash to form balls into ceramsite. The strength of ceramsite is small, adding water glass can increase the strength of ceramsite after sintering, but after sintering at 1100-1300℃, the strength of the finished product will be greatly reduced

Method used

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Embodiment Construction

[0024] Below in conjunction with embodiment the present invention will be further described:

[0025] 1. The ingredients of cylindrical attapulgite fly ash ceramsite are composed of the following components by weight percentage: high-viscosity attapulgite clay powder 3%, attapulgite clay tailings powder 12%, fly ash 68%, kaolin tailings Mineral powder 7%, quartz sand tailings powder 6% and wood powder 4%.

[0026] 2. The production method of cylindrical attapulgite fly ash ceramsite: (1) Add the ingredients of cylindrical attapulgite fly ash ceramsite into the mixer and mix them and then input them into the extrusion granulator for granulation. The diameter of the particles is controlled at 12mm. The length is controlled at 25-30 mm; (2) the granulated particles are input into the internal heating rotary kiln for roasting, the roasting temperature is controlled at 700-750 ° C, and the roasting time is controlled at 3 hours; (3) the roasted particles are input into the rotary c...

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Abstract

The invention discloses cylindrical attapulgite fly ash ceramsites. The key point of the technical scheme of the invention is that: the cylindrical attapulgite fly ash ceramsites consist of high-viscosity attapulgite clay powder, attapulgite clay tailing powder, fly ash, kaolin tailing powder, quartz sand tailing powder and wood dust powder. The cylindrical attapulgite fly ash ceramsites are prepared by mixing, pelletizing, baking, cooling, screening and packaging ingredients of the cylindrical attapulgite fly ash ceramsites. The cylindrical attapulgite fly ash ceramsites are spherical, are rough and firm on the surfaces, are provided with a large quantity of fine air holes, and are building ceramsites with light weight, high strength, low heat conduction coefficient, high refractability,high chemical stability, durability and high heat preserving and sound insulating performance. The cylindrical attapulgite fly ash ceramsites are produced by comprehensively utilizing fly ash and tailings. Resource utilization ratio is increased, waste is turned into valuable, and the environment is protected. The cylindrical attapulgite fly ash ceramsites are suitable for producing ceramsite concrete and heat preserving and sound insulating materials.

Description

technical field [0001] The invention relates to ceramsite, in particular to a cylindrical attapulgite fly ash ceramsite. Background technique [0002] 80% of my country's mineral resources are associated mines, a large amount of valuable resources are stored in tailings, and tailings stockpiles require a large amount of land. Many tailings ponds have been used beyond the time limit or overloaded, or even operated in violation of regulations, which has caused great safety hazards in the tailings ponds and posed a serious threat to the property and life safety of people in surrounding areas. [0003] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is also the main solid waste discharged from coal-fired power plants. With the development of coal-fired power plants, the amount of fly ash emissions has increased year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B33/00C04B33/132C04B33/135
CPCY02P40/60
Inventor 许庆华金白云徐志伟许盛英
Owner 南通沪联航海设备有限公司
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