|About this Abstract
||Materials Science & Technology 2011
||Green Technologies for Materials Manufacturing and Processing III
||Manufacturing Impact: Energy Reduction through Microwave Assist Technology Calcining of Limestone
||Morgana Fall, Shawn Allan, Holly Shulman
|On-Site Speaker (Planned)
Microwave Assist Technology (MAT) was evaluated for limestone calcination through dielectric property testing, modeling, calcining trials, and cost benefit analysis for use in the cement, steel and glass industries. MAT has demonstrated enhanced calcining effects through the use of microwave compared to conventional trials in the same kiln. Microwave Assist Technology is a method to simultaneously apply traditional radiant heat and microwave energy in the same kiln. Microwave thermal activation targets and directly heats limestone, eliminating the reliance on thermal conduction as a means of energy transfer. Calcining trials have demonstrated that lower temperature and shorter dwell times are achievable using MAT, leading to significant energy savings. Results of the cost benefits analysis indicate that a 10% conversion of the limestone industry to MAT processing would result in a savings of 24 Tril BTU/yr and a reduction of 900 Mlb/yr of CO2.This work is supported by the Department of Energy.