High Profit Low Invest Small aac Brick Block Production Line
Autoclaved Aerated Concrete (AAC) is a siliceous material (sand,
fly ash and silicon tailings such as waste porcelain clay, stone
processing waste materials, blast furnace slag, etc.) and
calcareous materials (lime, cement) as the main raw material,
mixing fat gas agent (aluminum powder), by ingredients, mixing,
casting, pre-raising, cutting, autoclave, curing process made of
light porous silicate products, because by the hair contains a lot
of gas even after the small pores, hence the name of aerated
Advantage of AAC:
- Lightweight: Porosity achieve 70% to 85%, volume density is generally 500 ~
900kg/m3, as 1/5 of general concrete the 1/4of clay, the 1/3 of
hollow brick, and similar with wood can float in water. It can
reduce building weight, reduction in the cost of integrated
- Fireproof: Most of the major raw materials is inorganic materials, so it has
good fire resistance, and do not emit harmful gases when meet fire.
Fire 650 degrees, as a refractory material, the thick up of 90mm
walls can reach to 245 minutes fire resistance, 300mm thick up wall
can reach to 520 minutes fire resistance.
- Sound insulation: Due to a unique porous structure, so it has a sound absorption
capacity. The sound absorption capacity can reach of 10mm thick
wall up to 41 db.
- Insulation: As the material inside has a large numbers of the pores and
porous, which has a good thermal insulation properties. The Thermal
conductivity is 0.11-0.16W/MK, as 1/4-1/5 of brick. Typically, the
insulation effect of 20cm thick aerated concrete wall is equivalent
to 49cm thick solid brick walls ordinary.
- Permeability: Result of material by the composition of many independent small
pores, the moisture absorption is slow, in the volume of absorbent
is 5 times of clay saturation do. When used in the bathroom, the
wall can be treated to interface directly paste tiles.
- Anti-seismic: The same building structure, improve the two seismic than the
- Green: Manufacturing, transportation, all use the process of pollution,
to protect arable land, saving energy, is one kind of a green
- Durability: material strength is stability, in the specimens tested after one
year of atmospheric exposure; the intensity increased by 25%, and
remained stable after ten years.
- Shortcut: it has good machinability, can be sawed, planed, drilled, nailed,
and available appropriate as bonding of adhesive material, so
create favorable conditions for building construction.
- Economies: An integrated lower cost than using more than 5% of solid clay
bricks, and can increase the usable area, greatly enhance the
utilization of floor space.
Main Equipments in AAC Production Line:
a. Crusher: Lime, gypsum, and such kind of bulk material need to be
crushed as the first step in AAC Plant.
b. Miller: The AAC material must be fully grinded in order to make
better reaction. Ball Mill is used widely, it has two types: dry
and wet, can be chosen upon requirement.
Material Metering Equipments: Computer Control Automatic Metering System is commonly used as
measurement of raw materials.
Material mixing and casting equipments: Mixer, it’s the slurry mixing machine, also is slurry casting
Cutting Machine: the AAC blank is formed after casting and pre-curing, as the size is too large, it must be cut to
achieve the required product size.
Autoclave: Autoclave is a device for silicate hydration products to get
physical and mechanical properties.
Boiler: the boiler supports for the autoclave and pre-heat furnace and
other facilities with heat.
a. Mould Frame, Mould Bottom and Mould Car, they composed together
to form the Casting Mould, which is the main forming equipments in
AAC Production Line.
b. Hardening Car, Ferry Cart and Hangers, they must be equipped as
auxiliary equipments in autoclave curing system.
c. Block Separator. The separator is a special machine whose
function is to separator the plaste block into piece,in order to be
transfered and used.
d. Block packing machine.
The process flows of the plant line
Dose the raw materials(1), then convey the raw materials to the
casting and mixing machine, mix them(2), evenly cast them(3) put
the reinforcing bars in the mould(19). After a period of static
curring(4), once the green brick gains certain degreen if hardness,
it will be conveyed to the cutting machine together with the mould.
The turning over sling complete the following works:A, turning over
the mould with 90 degrees in the air(5), one side boards becomes
the base board to support the green brick intil it is steam cured.
B, swing the green brick to the cutting cart or cutting board to
demould(6). C the unload mould frame and the returning side
board(16)are recombined into mould again. (17) the recombined mould
will be cleaned and sprayed with oil for casting again. (18) Each
face of the green brick will be cut on the cutting machine step by
step: a, cutting the sides of the green brick vertically(7), b,
then cutting it crossly(8), at last, cutting the green brick
horizontally(9). After cutting, the green brick together with mould
base plate are swinged to the steam curing cart(10) and numbered
before sending into the autoclave(11) for high temerature steaming
curing(12), after steam curing, the bricks are taken out of the
autoclave(13), and then swinged to pile up or load it to a car and
packaged(15), the side board is sent back to the beginning of the