Spherical attapulgite fly ash ceramsites

Abstract

The invention discloses spherical attapulgite fly ash ceramsites. The key point of the technical scheme of the invention is that: the spherical 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 spherical attapulgite fly ash ceramsites are prepared by mixing, pelletizing, baking, cooling, screening and packaging ingredients of the spherical attapulgite fly ash ceramsites. The spherical 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 spherical 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 spherical attapulgite fly ash ceramsites are suitable for producing ceramsite concrete and heatpreserving and sound insulating materials.

Description

technical field [0001] The invention relates to ceramsite, in particular to a spherical 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 t...

AI Technical Summary

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