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AAC is a green and sustainable building material and stands for Autoclaved Aerated Concrete, otherwise known as Air concrete. It is manufactured from natural raw materials. Air concrete was developed in 1914 by Swedish engineers. They discovered that adding fine aluminum powder to cement, lime, water and finely ground sand caused the mixture to expand considerably. Most common product densities vary between 350-700 kg per cubic meter. The finished Air concrete product is four to five times the volume of the raw materials used, making it extremely resource-efficient and environmentally friendly. The energy consumed in the production process is only a fraction compared to the production of other materials. However, in AAC plant, in order to improve the resistance of the aerated block beat resistance, abrasion resistance and output, product appearance, etc., we need to pay attention to some aspects.

AAC is a green and sustainable building material and stands for Autoclaved Aerated Concrete, otherwise known as Air concrete. It is manufactured from natural raw materials. Air concrete was developed in 1914 by Swedish engineers. They discovered that adding fine aluminum powder to cement, lime, water and finely ground sand caused the mixture to expand considerably. Most common product densities vary between 350-700 kg per cubic meter. The finished Air concrete product is four to five times the volume of the raw materials used, making it extremely resource-efficient and environmentally friendly. The energy consumed in the production process is only a fraction compared to the production of other materials. However, in AAC plant, in order to improve the resistance of the aerated block beat resistance, abrasion resistance and output, product appearance, etc., we need to pay attention to some aspects.

material selection
1), lime as calcium in AAC plant,  adjusts the production speed of the slurry in the process of gas, gelled hair, therefore the effective calcium oxide in lime should be larger than 65%, the digestion rate should be in 10-30 minutes, and digestion temperature should greater than 65 degrees.
2), cement can accelerate the strength of the body, to ensure the stability of slurry casting, so the selection of cement is also cannot be ignored.
3), fly ash will a certain activity, after mixing with lime or cement mixing the use of fly ash should be according to the national standard GB1596-91 "used in the cement and concrete in fly ash" I, II class fly ash.
4), aluminum powder can make gas block products with good porosity structure, in addition to the need to meet the national standards, but also pay attention to the amount of aluminum powder. if the amount is used incorrectly , it can cause cracks, collapse mode, bubble shape etc.
5), gypsum and sand: gypsum can increase the strength of the products, helps the body to adopt the high temperature when products are steamed in AAC autoclave. sand mainly provides calcium oxide. The choice of gypsum and sand should meet the national standards equipment selection
Equipments in AAC plant are including fine grinding equipments, mixing equipments, cutting equipments, and steam autoclave.
The AAC autoclaved as a final cleaning in the production of aerated block, plays an important role in AAC plant, especially for forming gas reaction of the aero concrete piece of pipe. When choosing AAC autoclaved we should according to the gas production and plant area to select the different diameter, working pressure of AAC autoclaved.
Such as ZG autoclave has a diameter of 2 m, 2.2 m, 2.4 m, 2.5 m, 2.68 m, 3 m, 3.2 m,  there are top-open autoclave and side-open autoclave according the ways of open, to adapt to the needs of different plant area.
Including production process, ingredients on the production process control, static stop curing, cutting, high temperature and high pressure pipe reaction caldron in the aero concrete production. Pay attention to the working pressure of the AAC autoclave, and  the temperature cannot exceed the established value, to check whether there are  crack, deformation, leakage in the autoclave body, lid, steam pipe etc.
Zhengzhou Boiler Co. ,Ltd is a company specializing in the production of AAC autoclave
, the fully automatic hydraulic, pneumatic autoclave and electric autoclave .The autoclaves are designed and produced based on the absorption of domestic and foreign technologies. And they are in accordance the vessels’ specifications and standard.

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