Researchers from Beijing University of Technology have developed an innovative process for efficiently recovering tungsten (W) and molybdenum (Mo) from waste fluid catalytic cracking (FCC) catalysts. The proposed method, termed "oxidative roasting-alkali roasting-wet ball milling leaching," offers a dual benefit: it significantly enhances the extraction efficiency of these valuable metals while minimizing waste liquid and gas emissions, achieving a balance between resource recovery and environmental sustainability.

Nano blue tungsten oxide is a tungsten oxide with a unique blue luster. Its main characteristics are as follows:

Nano blue tungsten oxide, often chemically represented as WO2.9 or WO2.92, is a tungsten oxide with a unique blue luster. It boasts a large specific surface area, a high melting point, and excellent thermal stability, making it a promising candidate for a wide range of applications across multiple fields.

Tungsten disulfide nanosheet (WS₂ nanosheet) is often used as a lubricant additive. When added to lubricating oils and greases, it can greatly improve the lubrication effect. It is used in automobile engines, industrial gearboxes and other equipment to reduce wear on mechanical parts and extend the service life. It can also be made into a dry-film lubricant and coated on the surfaces of aerospace parts and precision instruments. It can play a lubricating role under special working conditions such as high temperature and high vacuum, ensure the stable operation of equipment, and improve the reliability and efficiency of mechanical systems.