Customized Sand fully automatic autoclave Building Materials
AAC BLOCK MAKING MACHINE INTRODUCTION
what is AAC?
The Autoclaved Aerated Concrete (AAC) material was developed in
1924 in Sweden. It has become one of the most used building
materials in Europe and is rapidly growing in many other countries
around the world.
Autoclaved Aerated Concrete, also known as Aircrete, is a
lightweight, load-bearing, high-insulating, durable building
product, which is produced in a wide range of sizes and strengths.
AAC offers incredible opportunities to increase building quality
and at the same time reduce costs at the construction site. AAC is
produced out of a mix of quartz sand and/or pulverised fly ash
(PFA), lime, cement, gypsum/anhydrite, water and aluminium and is
hardened by steam-curing in autoclaves. As a result of its
excellent properties, AAC is used in many building constructions,
for example in residential homes, commercial and industrial
buildings, schools, hospitals, hotels and many other applications.
Autoclaved aerated concrete is actually hydrated calcium silicate.
The calcium is obtained from quick lime, hydrated lime and cement.
The gypsum is used as a catalyst and for optimizing the properties
The silica is obtained from silica sand, fly ash (PFA), crushed
silica rock and/or stone. It is possible to obtain silica as a
by-product from other processes, e.g. foundry sand or burgee from
glass grinding, provided the levels of alkalis or other impurities
are not too high.
This product is key equipment which has a widely application in
building material factory to autoclaved cure different kinds of
building materials. It is also used in areas of chemical, textile,
wood, metallurgy, military industry. Convenient operation, security
and reliable are its advantages.
AAC BLOCK PRODUCTION LINE RAW MATERIAL INTODUCTION
AAC block machine main material:coal ash sand waste mine material
coal stonestone dust and other silicon materials.
1 Product weight is according to 600kg/m3 to control.
2 annual capacity 200,000M3.
3 set raw material proportion: cement 6.5%, raw lime 23%, flyash
68%, gypsum 3%, aluminum paste powder 350g/M3.
4 water and material rate 0.631
5 one mould product 2.88M3
6 Casting slurry cycle time 5-6 minutes, cut cycle time 5 minutes.
7 casting slurry temperature 38-42 degree
8 body quiet stop. Time is 1.5-2.5housr, temperature 50-90 degree,
after quiet stop body strength is 0.15-0.18Mpa
9 Steam curing cycle time, come in and out autoclave about 0.5hour,
steam curing cycle time about is 6 hours/1.6Mpa, total 6.5 hours.