Description
The select of technological process
configuration is the key, which decides
the success of Fly ash aerated concrete production line, so find
the scientific and reasonable process flow and configuration is the
initial step for production of quality products and realization of
the economical benefits we expected.
The process flow of fly ash aerated
concrete:
Adopts wet processing
production line, main procedures contains raw material preparation,
batching and pouring, static stop cutting and steam curing etc.
Firstly grinding the fly ash or silicate sand with proportioned
water into slurry, then add powered lime, certain cement, gypsum
and foaming agent, then mixing and pouring the mixture into the
mould frame, static stop for foaming and hardening, thus be cut
into blocks or panels of different specification, then the adobes
will be sent to the autoclaves by steaming larry, the porous and
light weight aerated concrete products will be formed into beings.
It features of light weight, high compressive strength, heat
conservation and insulation, cannot burn, anti-earth quaking, sound
insulation and anti-water absorption and so on.
The standard and purpose of the raw
materials in fly ash aerated concrete production
line
1, Fly
ash
Fly ash is the core raw
material for this product, and it is also the main silicate and
aluminum sources for aerated concrete.
2,Cement　
Cement is the main source
of the compressive strength for aerated concrete. It provides the
main calcium ingredient for aerated concrete. We should choose the
suitable cement for fly ash aerated concrete through the variety
and grade two sides. The fist and best cement which should be
selected, is *2.5 grade ordinary silicate cement. But actually in
order to reduce production cost, we usually adopt the *2.5 grade
ordinary silicate cement.
3,Lime　
Lime is also one of the
main raw materials for fly ash aerated concrete production, the
main function if provide efficient CaO together with cement, make
sure the CaO could react with the SiO2,Al2O3 in the silicate
materials under water thermal condition, thus form hydrated
silicate calcium. So lime is one of the main strength source for
this product. The efficient CaO ratio in quick lime which used for
aerated concrete production should not less than *5%,for more than
*0% will be best, and according to the JC/T*******6
standard.
4,
gypsum　　
Gypsum is the regulator
additive in the foaming process in fly ash aerated concrete
production. The regulating effect mainly on the postpone for quick
lime slaking and slurry hardening speed processes. The main
chemical ingredient is CaSO4.Presently there are three kinds of
gypsum in the market: plaster stone, anhydrite
andcalcined
gypsum. In adition, the gypsum could also be gained from the
chemical engineering industry, such as thephosphor gypsum expelled
from the phosphor fertilizer production, flour gypsum decharged
from theFluorinated
Chemicalsproduction,
Titanium
dioxide gypsum from the titanium white powder production etc. They
all could replace the original gypsum to reduce the production
costs.
5, foaming agent
The foaming agent is playing an important role as foaming additive
in fly ash aerated concrete production, it could cause bubbles in
the concrete, thus the light weight and perforated structure could
be formed
6,foam
stabilizer additive
When the air bubbles are
formed, because its external body is very thin, they are very easy
to break under disturbance by various condition, thus will cause
bad quality for the concrete. So the foam stabilizer additive need
to be added into the slurry.
Ingredients:
The typical raw materials
formula and consumption for fly ash aerated concrete
block
Fly ash: *0%,
consumption: **0kg/m3
Cement: *3.8%,
consumption: ****0kg/m3
Lime: *3.8%, consumption:
******0kg/m3
Phosphogysum: 2.*6%,
consumption: 2.*6%
Aluminium: very few,
0.4kg/m3 consumption
The technological process flow for fly
ash aerated concrete production line:
1. The raw materials
preparation technology for fly ash aerated concrete production
line
The raw material
preparation procedures contains crushing and grinding of quick
lime, crushing, grinding and mixing of gypsum, grinding and slurry
of fly ash or gypsum, waste slurry preparation and so on. The fly
ash and quick lime are the main raw materials for fly ash aerated
concrete production.fly ash as the solid wastes discharged by
burning coal for boiler, the nature is born to be, but we can
adopts wet processing grinding them into fines we request for easy
using.
2. Batching and pouring
process in fly ash aerated concrete production
The process is
specialized in batching in proportion, mixing and pouring in moulds
for the raw materials we prepared. The lime, cement and fly ash
slurry could be batched through semi-automatic control system
orAccumulate
ingredients measured by full automatic PLC
control system
3. The quiet stop and
cutting process for fly ash aerated concrete
production
The moulds will be sent
to the static stop room for **3 hours stable temperature
maintenance after pouring, then formed into the adobe. Then the
adobes reach a certain strength for cutting after static stop, the
mould will be slung and placed on the cutting table by the aerial
overturn crane, the flip hoist overturn the mould in *0 degrees in
the air, the de-mould the adobe and put it together with the adobe
on the cutting table, the adobe will be multi-step cut on the
cutting table.
4. The steam curing
process in fly ash aerated concrete production line
The coded steaming larry
will be sent in the autoclaves for steam curing by hauling machine,
after ***0 hours curing, the finished products will be pulled out
by the hauling machine.
Deyi specialized in
providing full set AAC equipments with high quality and competitive
prices, offer whole set machinery items and full round service of
fly ash aerated concrete production line, sand lime AAC production
line and mineral wastes aerated concrete production
line.
