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Dongyue AAC block production line Autoclaved Aerated Concrete Production Line AAC Block Making Machine
Dongyue Machinery Group is a company specialized in producing AAC BLOCK MACHINE,AAC PANEL MAKING MACHINE,The capacity is between 50000m3 to 300000m3 per year.
With technology cooperation with Germany company AAC CONCEPT,Our aac block machine inherits germany technology.So far we have 15 line of AAC block machine in Indonesia,10 lines in india,5 lines in Vietnam,2 lines in Buma,2 lines in Mongolia ,1 line in Kazakhstan ,1 one in Bulgaria
What is AAC Block?
Autoclaved Aerated Concrete is a high quality building material manufactured from quartz sand ,lime ,cement, aluminum compound and water several natural chemical reactions take place during the manufacturing process that account for AAC 's high strength ,light-weight and thermal properties.
1.Light-weight :
The AAC block weight usually is 400-700kg/m3. It apply to fill walls of high rise building and the main wall of low-rise buildings to make the whole building self-weight than normal weight reduce above 40% of composite masonry structure building .
2.Good heat preservation:
The heat preservation effect of 20 cm aerated concrete wall is equivalent to 49 cm thick clay brick wall thermal insulation effect. Obviously the heat insulation performance is significantly superior to 24 cm brick wall.
Thus,it greatly thin the thickness of wall body.
3.High strength:
By experiment, aerated concrete block compressive strength is greater than 25 kg/cm2, equivalent to 125 clay brick and lime-sand brick compressive strength .
4.Nice anti-seismic performance:
The aerate concrete block is light-weight,good overall performance,small inertia force during the earthquake .
5.High temperature resistance:
When temperature is below 600, the aerated concrete block compressive strength increased slightly, when the temperature is controlled in 600, its compressive strength is close to room temperature compressive strength, so the aerated concrete as building material fireproof performance meet national fire protection standards.
AAC Block Classification
AAC Block is classified by Strength and dry density :
By strength:A1.0,A2.0 ,A2.5 ,A3.5 ,A5.0 ,A7.5, A10;
By dry density:B03,B04,B05,B06,B07,B08.
Finished Block Dimension
|
Length |
Width |
Height |
|
600mm |
100mm 125mm 150mm 200mm 250mm 300mm |
75mm 100mm 150mm 200mm 250mm 300mm |
AAC raw material introduction
Fly-Ash: Fly ash is waste from Thermal plant.Fly ash is rich in silica and aluminum oxide ,so it is good raw material to make aac block.
Sand: The requests is that the Silica content is above 69% .Sea sand can not be used as aac raw material.
Lime: Active powered lime is a requirement for giving the real aeration to the product. Different qualities of lime are available, and depending on the raw materials, the mix design can be chosen to get the optimal quality of production.
OPC cement. This Project aims to utilize OPC cement as main binder material. It will give faster strength to the bricks, besides giving improved consistent quality. It also ensures a better cost effectiveness for the same.
Gypsum: This too is an industrial waste. This is available as an industrial byproduct of Fertilizer Plant. Gypsum is responsible to give long term strength to the Blocks.
Aluminum Power. Finely ground Aluminum power is used in very limited quantity ( less than 0.5%), so that it reacts with active lime, and silica in base material to make the aeration,
|
Name |
Unite |
Cement lime fly ash |
|
Fly ash |
% |
65-70 |
|
Cement |
% |
6-15 |
|
Lime |
% |
18-25 |
|
Gypsum |
% |
3-5 |
|
Aluminum powder paste(600kg/m3) |
1/10000 |
8 |
|
Water & material rate |
|
0.6.-0.65 |
|
Casting system |
°C |
36-40 |
|
Aluminum mixing time |
S |
30-40 |
Main Process Flow of AAC Production line/AAC block
1. Raw material: Store the fly-ash , lime and gypsum after milling to the needed fineness (200 mesh)
2. Mixing the fly-ash, cement, lime, gypsum and water in the pot after batching.
3. Promote the slurry temperature to 40-50 degree by steam, and mill with aluminum powder for 1min.
4. Pour the slurry into the mould, and still in the curing room .
5. Cut it in to needed size by the cutter after the slurry approach the cutting intensity, and place the block on the trolley.
6. Autoclaved curing after the trolley enter into the autoclave,keeping the constant pressure 1.2MPa. The whole process needs about 12h.
7. The products out of the autoclave are placed in a stack.
Germany tech dongyue machinery group Autoclaved Areated concrete block machine
Germany tech dongyue machinery group Autoclaved Areated concrete block machine
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