US Patent Issued to Ailin Dai on July 28 for "Method of lithium sulfate and sodium (potassium) carbonate directly producing lithium carbonate and reducing sulfate radical content" (Chinese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,171, issued on July 28, was assigned to Ailin Dai (Shanghai).

"Method of lithium sulfate and sodium (potassium) carbonate directly producing lithium carbonate and reducing sulfate radical content" was invented by Qingsheng Wang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Traditional methods for producing lithium carbonate involves thermal precipitation of a lithium sulfate purification liquid and a sodium (potassium) carbonate purification liquid to produce crude lithium carbonate to the production of a refined lithium carbonate wet product. The employment of "reverse feeding, non-circulating mother liquor", "pre-precipitation supplemen...