Sand Lime Brick

The patent for the production of sand-lime brick has existed since 1880. Eirich has contributed to the sand-lime brick success story since its earliest industrial beginnings.

We supply material preparation equipment for state-of-the-art wall construction material

• Mixing systems
• A full range of conveying, weighing and feeding equipment
• Control and process control systems
• Machinery and systems engineering
• A broad service portfolio

Premixing

• Homogeneous distribution of all materials in the mix as well as a uniform coating of lime on the sand
• Intensive wetting of the lime with water
• The full surface of the sand grains is activated to form calcium silicate
• Clay agglomerates, which inhibit the formation of high-density calcium silicate with fine pores, are broken down
• Lime agglomerates are reliably separated
• Uniform brick structure when light aggregates or fly ash are mixed in
• Outstanding, reproducible mixing quality

Secondary mixing 

• Reliable separation of reactor material agglomerates
• Accurate control of the moisture for pressing
• Continuous material stream up to brick removal on the press
• No streaking when pigments are mixed in
• Adaptation of the mixing power to changes in pressing output associated with different brick sizes