usage of aluminium powder
the usage of aluminium powder for AAC block
for the same quality aluminium powder , if volume is bigger then usage will be more smaller .
we can be accordingly volume to accurate usage of aluminium powder
accordingly to the formula , aluminium powder is working basic on alkaline , react to the hydrogen
2Al+3Ca(OH)2+6H2O
3CaO·Al2O3·6H2O+3H2 ↑
we can be kown 2gram aluminium can be get 3gram hydrogen , basic on this 1 gram gas volume is 22.4 the aluminium is 27， the aluminium gas volume is :
V0＝22.4×[3/(2×27)]＝1.24l/g
accordingly this formula , the gas formula
(V1/T1)＝(V2/T2) this temperature usage can be this :
light weight concrete block volume can be 2 parts : one is basic raw material absolutely volume , accordingly gas volume can be get aluminium powder usage :
maluminium ＝Vhole /(V2·K)
： m al g/m3)；
V2——pouring temperature (l/g)；
K— active aluminium content
duration product , the gas volume aslo will be changed accordingly temperature , slurry and many reasons , so through formula get accurate usage of aluminium powder is not possible , AAC factory should be adjust accordingly product experience .