US Patent Issued to SC Hongya Qingyijiang Sodium Sulphate on Feb. 24 for "Leaching-seepage process of sodium sulfate in thenardite tailing stack" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,378, issued on Feb. 24, was assigned to SC Hongya Qingyijiang Sodium Sulphate Co. Ltd. (Meishan, China).

"Leaching-seepage process of sodium sulfate in thenardite tailing stack" was invented by Guangping Chen (Meishan, China), Xiping Ni (Meishan, China), Yaqiang Zhuo (Meishan, China), Hongyan Tan (Meishan, China) and Nianjun Zeng (Meishan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a leaching-seepage process of sodium sulfate in a thenardite tailings stack. The process includes the following steps: step 1, providing a mud reserve pit next to the thenardite tailings stack, and ditching a drainage ditch next to a bottom of the th...