| Applying the principles of fluidization, a counter current
fluidized bed calciner was designed for heat activation of
clays and a pilot plant of capacity of 2 tonnes per day was
set up at the Sri Ram Institute for Industrial Research.
The pilot plant studies revealed that the fluidized bed
technique could be effectively used for production of clay
pozzolana. It has advantages such as high thermal efficiency,
lower floor space, and it is economical compared to the
conventional methods. Based on these studies, a demonstration-
cum-production plant of capacity of 20 tonnes per
day has been set up by National Buildings Organisation at
Sultanpur, Delhi, where uniform quality of pozzolana
conforming to IS specifications is being produced. |
