The mechanical press of model AO-1M is designed for dry-press process of air
- dried brick moulding.
The press develops the unit pressure up to 200 kgf/cm2 depending on the clay
components and quality of its preparation. After air brick predrying and burning
the finished brick has a grade of "75" and "100".
The easily melted clays and loams can serve as a raw for brick making by dry
- press process.
The main components of chemical composition of the mineral clays: SiO2 (60
- 70%), Al2O3 (10 - 15%), Fe2O3 (5 - 8%).
The conditions of brick making by dry - press process require the preparation
of clay powder, containing approximately 50% of the particles less than 1 mm
and 50% of the particles with dimension of 1 - 3 mm. The presence of 10 - 12%
of the particles with dimension up to 5 mm is allowed, The powder humidity should
not exceed 10 - 12%.
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