RESIDUE FLUID CATALYTIC CRACKING (RFCC) AS AN ALTERNATIVE ADDITIVE IN CEMENT PRODUCTION: A PRELIMINARY EVALUATION

Abstract

In the upcoming time, there are many refineries that are under operation in Vietnam. As a result, a large amount of spent-RFCC catalyst will be discharged, and this will be a challenge for the environmental management. Our study aims at evaluating the reusability of non-grinded RFCC (RFCC-KN) as an additive
for the different types of cement (OPC, PBC30, PBC40 and PCB50) manufacturing in Vietnam. The results
show that RFCC-KN had the same physicochemical properties as fly ash - an additive widely used in current cement production. RFCC-KN was able to mix with cement at different mass ratios to produce many types of cement. OPC cement was mixed with RFCC-KN at a mass ratio up to 30% to make PCB40. For PCBs, the ratios of RFCC-KN in PCB50 and PCB30 were 20 and 10%, respectively. In comparison with clinker, the use of RFCC-KN as an additive in cement production could reduce cost in the range of 6
- 19%.