ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,741,871, issued on Sept. 22, was assigned to Hunan Fortune Environmental Technology Co. Ltd. (Yueyang City, China).
"Resource utilization method of crude sodium sulfate" was invented by Yongzhan Li (Yueyang City, China), Jihong Huang (Yueyang City, China), Xia Liu (Yueyang City, China) and Yijun Xu (Yueyang City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a resource utilization method of crude sodium sulfate. The method comprises the following step: reducing the crude sodium sulfate to form a sodium sulfide solution; making the sodium sulfide solution perform a first reaction with chlorine to obtain sulfur and ...