Development and characteristics of aerated concrete
The aerated concrete product has nearly a hundred years of history in foreign countries and becomes the leading industry in construction field; it has been nearly forty years since China introduced this technology, and our technology and equipment is getting perfection. The advantages of aerated concrete are light-weight, high heat preservation, high noise absorbability, high intension and easy-to-processing. With abundant raw material, especially for coal ash; on the one hand industrial waste is reused which can bring favorable social and economical benefits, on the other hand, environment and farmland is protected. It is the perfect substitution of traditional brick. Supported by state policy about reforming of wall material, taxation policy and environmental policy, the aerated concrete product is becoming one important part of new type construction material with bright market prospect.
Different production technologies can be adopted according to different raw material type, quality and equipment. Generally, grind fly ash and silicon sand with water; wait for the solidification and then cut into desired shapes; send them into the pressure steamer, in that high temperature and steam-saturated environment, the light-weight and sponge-like aerated concrete product is made.

Finished product out of pressure Steamer

Casting workshop

Mixing and casting machine:
Purposes: this machine is used for mixing of raw materials of slurry, cement, calcium oxide, gypsum and aluminum powder suspension in the shell body and then casting the mixture in the mold. The mixing intensity and duration is crucial to the aerated concrete products.
Structure characteristics: the propeller type blades in the shell body can make strong vortex which makes the raw material mixing evenly. The height adjustable casting arm can prevent splash. There are immobile type and mobile type for different technology demands.

Main technical parameters for mobile type casting machine:

Automatic lifting equipment: work together with the double beam & double hook crane for mold removing and clay body lifting. There are four thrusters and four hooks that can open and close automatically.
Finished product automatic clamps: work together with crane or fork lift truck; automatically clamps product and pile up or load to trucks.

Slurry making tank: used for slurry making.
Cubage: 6m3
Mixing motor power: 5.5KW
Mixing speed: 41 turns/minute

Slurry mixing tank: used for store of slurry and prevent sedimentation, adjust slurry thickness for casting preparation.

Specifications: Cubage: 20m3 Mixing motor power: 7.5kw Cubage: 8m3 mixing motor power: 5.5kw

Ferry cart: transportation of molds and finished products.

Ferry speed: 2.28meters/minute　　
Cart rail span: 3400mm
Mold turning distance: 600mm
Motor power: 4kw
powder tank: high speed turning of blades blends aluminum powder with water, prepare for casting.
（1） lime and cement measuring tank;
（2）slurry measuring tank;
（3）Making of helix conveyer and other equipments with matching technologies.
Material silo and non-standard components: site making and installation according to technological demand of customers.

Mold frame: 4.11×1.42×0.65m
Steam curing machine: 3.90×1.20m	Mold bottom plate: 4.12×1.42m

Mold frame: mobile type and integrated type; double sided plate and hollow in between for heat preservation; the inner side plate is welded by 10mm steel plate for enhancing the rigidity, distortion prevention and prolong the using life.
Mold bottom plate: 14b type u-steel welded on the four sides of 10mm steel plate in order to enhance the rigidity and distortion prevention. The specification matches the mold frame.
Steam curing machine: welded by 14b type u-steed and works together with mold bottom plate and mold frame. Wheel span: 600mm or 730mm.

Automatic lifting equipment

pressure Steamer

Finished product automatic clamp

Helix conveyer

Aerated concrete brick models