Reducing cement kiln dust dumping
The cost of dumping cement kiln dust (CKD) - a high chloride waste product - is a major contributor to the operating costs of cement producers.
This project works with industry partners Adelaide Brighton Cement (ABC), who extract CKD from their Birkenhead plant process using an electrostatic precipitator (ESP). CKD is later fed back into final cement products, however product chloride limits restrict the amount of CKD that can be reused. ABC identified that separating CKD into low and high chloride fractions would allow reuse to be optimised and CKD dumping to be reduced.
The goals for this project were thus to investigate whether the process of extracting CKD using an ESP could be exploited to produce separate high and low chloride CKD streams. Real experiments using on-site sampling and data were used to evaluate CKD separation and potential increases in reuse. Results were used to develop a feasible process solution.
Our built and natural environments
Chemical Engineering and Advanced Materials
Dion Steven Samu