Autoclaved aerated concrete is made from raw materials like silica sand or coal ash. Block raw materials are transported by the belt conveyor and fed into the wet ball mill where the raw sand is processed into sand slurry.

The vacuum room of the mixing plant is equipped with a visual mixing control program to enable automatic material mixing. After grinding, the sand slurry is pumped into the sand slurry tanks for storage and pouring. After oiling, the block mould f are transferred to the casting section. The lift-type casting head feeds the slurry into the block mould along its bottom to top. The guide plates on both sides of the casting head can evenly spread out the sand slurry and prevent it from splashing.

Screw conveyor
The screw conveyor is able to evenly convey powdery or granular products like coal ash at high speed.

Dust Removal Equipment
The dust removal equipment is used for collecting and removing the lime or cement powder on the roof of compartments and ventilation in AAC production lines.

The block moulds filled with concrete are transported to the closed and heated pre-hardening area, i.e. fermentation area. Due to the alkaline reaction of the aluminum in the slurry, many small bubbles develop in the compound. After 2.5 or 4 hours, the aerated cake will reach the preset cutting strength. The waiting time depends on the temperature in fermentation area, the quality of raw materials and the chosen material formulation.

After fermentation, the photoswitch receives the signal and starts demolding. The flipping hoist tilts the mold by 90° and places it on the cutting trolley (transfer trolley). After demoulding, the aerated concrete cakes are transported to the cutting line.

The cutting process starts after cake demoulding. The cutting trolley loaded with the cakes travels to the cutting section. The first horizontal cutting section: the head of cake is cut and the width of cake is precisely trimmed by multiple scrapers. The second cross cutting section: multiple high-precision horizontal cutting is conducted.

The latest cylinder can improve the cutting tension and achieve high precision, mute cutting, high speed and low vibration. The device adopts durable components and a cover with vacuum headspace, can absorb the top waste materials, keep the top of aerated concrete cake intact and save material cost. The tilting table can load the cake and tilt by 90°, so as to remove the residual waste on the top. The waste push device can push out the bottom waste and clean the side plate.

After waste materials are removed, the cut aerated concrete cakes are loaded on the hardening trolley (transfer trolley), which are then delivered to the concrete curing autoclave.

The autoclaved blocks are transferred to the concrete block separator by the finished product hoist and transport device. The concrete block separator will separate the blocks layer by layer to avoid surface sticking between blocks.

The separated blocks are taken to the block transfer device by the finished product hoist. The block transfer device loads two rows of finished concrete blocks and assembles them during travelling to minimize the breakage rate.

The forklift places the stacked pallets on the block pallet machine which can automatically send the pallets individually to conveyors. The clamp is used to place the blocks on the pallet and the filled pallet is transported by chain conveyors for final packaging. The packaged AAC blocks are transferred to the finished product storage area, and are ready for delivery.