ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,281, issued on July 15, was assigned to UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING (Beijing).
"Method and equipment for comprehensive utilization of niobite" was invented by Xi Lan (Beijing), Zhancheng Guo (Beijing), Jintao Gao (Beijing), Zengwu Wang (Beijing), Guoliang Feng (Beijing), Xiang Li (Beijing) and Rong Yuan (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and an equipment for comprehensive utilization of niobite is disclosed. The method includes the following steps: S1. adding and uniformly mixing a coal-based reducing agent to the niobite, and subsequently reducing the mixture in a reduction furnace to obtain the select...