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Certification:ISO9001：2008
50000m3 to 150000m3 AAC Block Production Line / Sand Lime / Fly Ash Block Plant
What is AAC (Autoclaved Aerated Concrete) ?
1. AAC block (autoclaved aerated concrete block), also called Light Block. AAC was perfected in the mid-1920s by the Swedish architect and inventor Dr. Johan Axel Eriksson, working with Professor Henrik Kreuger at the Royal Institute of Technology. It went into production in Sweden in 1929 in a factory in Hallabrottet and quickly became very popular. In the 1940s, the trademark Ytong was introduced, and was often referred to as \"blue concrete\" in Sweden due to its blueish tinge.It used siliceous (fly ash, sand, slag) and calcareous (lime & cement) as the main raw materials, which through the process of batching, pouring, pre-curing, cutting, autoclaving, separating and packing to make into the final products.
2. AAC block is new type & environmental construction material and widely used for industry and civil building construction. It has light ,keeping temperature , Environmental protection,can’t burn and other advantages. It has a wide prospect of market.it is the main building material in the future.
3. AAC block can be made into many kinds of bricks(for example:600×200×100,80×80×180,240×115×53,600×200×125),they could be used industry building and common building. AAC Block is the most mature technology of production and application in the worldwide nowadays.
4.As normally, concrete density is usually 1600-2400kg/m3,but aerated concrete are 500kg/m3,600kg/m3,700kg/m3.It has not the big grain and use silicon material (for example: fly ash,sand,stone dust and others ),through making the material small for example sand, they can be used directly if has enough degree of small (for example fly ash, Mixing calcium material lime, cement, water to a special ratio, then add the aluminum dust and the additive, then Make the aluminum dust and the special ratio have a Chemical reflect. then produce Hydrogen to make the concrete slop to expanding or swell and foam. Next put them into the curing room to concreting cutting steaming curing, At last, there will become the light brick and the porous rate is 70-80%.
How AAC (Autoclaved Aerated Concrete) production line working ?
9. Vertical cutting the big block
10. Hanging semi-product to hardening car
11. Entering autoclave
12. hardening
13. leaving autoclave
14. Hanging and stacking of end products
15. loading and packing
About the raw material ratio of AAC block :
Cement lime fly ash style aerated block raw material proportion
|
name |
unit |
Cement lime fly ash |
|
Fly ash |
% |
65-70 |
|
cement |
% |
6-15 |
|
lime |
% |
18-25 |
|
gypsum |
% |
3-5 |
|
Aluminum powder paste(600kg/m3) |
KGS |
0.6 |
|
Water & material rate |
0.60-0.65 |
|
|
Casting system |
OC |
36-40 |
|
Aluminum mixing time |
S |
30-40 |
Cement lime Sand style aerated block raw material proportion
|
Name |
Unit |
Cement Lime Sand |
|
Sand |
% |
55-65 |
|
Cement |
% |
10-20 |
|
Lime |
% |
20-30 |
|
Gypsum |
% |
2-3 |
|
Aluminum powder paste(600kg/m3) |
KGS |
0.8 |
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