Production of Clay Pozzolana by Fluidized Bed Technique

Abstract

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.