Aerated concrete is made of the raw materials: silica sand, lime, cement, gypsum (anhydrite), aluminium powder or paste and water.
In the wet ball mill (01), raw sand is processed to sand slurry which is stored in sand slurry tanks. Together with the other raw materials, the sand slurry is then transported to the Masa dosing and mixing plant (02).
When the mixing process has been completed, the mixture is fed into a casting mould. The casting mould is moved to the pre-hardening area to undergo a fermentation process (03) where the aerated concrete cake finally reaches a predefined cutting strength. At that point, the aerated concrete cake is de-moulded (04) in a two step process, removing sides first. The empty casting mould is then reassembled, oiled (05), and returned to the production cycle.
The aerated concrete cake runs through the various stations of the cutting line (06) and after that is placed on a hardening grid by means of the transport plant/tilting table (07).
Three cakes on hardening grids are stacked on top of each other onto a hardening car and transported to the waiting area (08) by means of a transport platform. From here, the cakes are loading into the autoclaves (09). Inside the autoclaves, the aerated concrete cakes are hardened under steam pressure and to create its final strength.
The hardened aerated concrete cakes are then transported to the re-tilting table (10) and to the separating machine (11), if required.
After that, the aerated concrete blocks are transported to the block transfer device (12) and placed on wooden pallets. From here, the finished products are packaged (13).
The used hardening grids and hardening cars are returned to the production cycle via the hardening grid transport device and the hardening car return device (10).
The plant can be extended by equipment for the manufacture of products with steel reinforcement (14).