ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,161, issued on June 2, was assigned to BAOSHAN IRON & STEEL Co. LTD. (Shanghai).
"Integrated drying process and device for dry granulated slag and sludge" was invented by Yongli Xiao (Shanghai) and Yongqian Li (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "An integrated drying process and device for dry granulated slag and sludge are provided. The process comprises: 1) slag ball mixing and soaking: high-temperature slag and steel balls are fully mixed and exchange heat therebetween, the high-temperature slag is cooled because the heat thereof is quickly absorbed by the steel balls and is crushed to form granular slag, and the temperature of...