IMPROVEMENT IN OR RELATING TO MANUFACTURE OF POSSOLANA CEMENT WITH PARTICULAR REFERENCE TO POSSOLANA CEMENT FROM PADDY HUSK

摘要

An improved process for the manufacture of cement from paddy husk ash or paddy straw ash characterised in that paddy husk is burnt in a stack or kiln or paddy husk fired boilers to obtain paddy ash containing not more than 10% carbon, grinding the same to obtain a powder with surface area or fineness of between 10,000-25,000 cmSUP2/SUP/gm measured by standard Blaine''s Air Permeability Apparatus and then mixed with slaked lime or Portland cement.