Milled flake aluminium powder is specially produced for adding into the aqueous alkaline slurry to evolve hydrogen gas bubbles in the making of light weight AAC Blocks. Different grades of powders are processed with specific attention to the size of bubbles formed and rate of evolution of gas to suit individual customer’s requirement.
Grade | Free Al. Purity | Apparent Density | Blaine | Particle Size Distribution | H2 Gas Evolution at 25° C in 16 Min. |
Wet Sieve Analysis | Recommended AAC Block Density | Product Fineness |
% (min.) | gm/cc | cm2/gm | D50 (µm) | in cc | (Retention on 45 µm % ) | (kgs/m3) | ||
Test Methods | In House | ASTM B 417-76 | ASTM E 204-55 | Sympatec (Helos BF/BR - Magic) |
In House | ISO 1247 | ||
MMP - C100 | 92 | 0.14 TO 0.18 | 15000 TO 18000 | 21 TO 25 | 70 (Min) | 10% (Max) | 350-400 | |
MMP - C80 | 92 | 0.14 TO 0.17 | 13000 TO 16000 | 25 TO 27 | 79 (Min) | 12% (Max) | 400-500 | |
MMP - C80C | 92 | 0.14 TO 0.17 | 10000 TO 12000 | 33 TO 36 | 70 (Min) | 21% (Max) | 400-500 | |
MMP - C80S | 92 | 0.12 TO 0.16 | 12000 TO 15000 | 30 TO 33 | 70 (Min) | 27% (Max) | 400-500 | |
MMP - C75FX | 92 | 0.18 TO 0.22 | 10000 TO 13000 | 40 TO 42 | 70 (Min) | 45% (Max) | 500-600 | |
MMP - CC80 | 92 | 0.16 TO 0.20 | 7000 TO 8000 | 50 TO 60 | 65 (Min) | 46% (Max) | 600-700 | |
Note:
Wet sieving with mineral spirit as rinsing liquid.
*Safety in Material Storage and Handling of Aluminium Powder