Recycling Importance of Mo & Co from Spent Catalysts
Molybdenum is one of the trace elements in the earth’s crust. It is used in many fields in industry. For this reason, the demand for primary mineral resources of molybdenum in the world is high and its price is high. There has been a serious need to develop secondary resources and recover Molybdenum from industrial waste materials, especially used catalysts. Used catalysts discarded by industries are undoubtedly very important as they contain metals such as Ni, Co, Zn, Cr, Fe, Al, W, V as well as Molybdenum.
The amount of used catalyst produced in one year worldwide is approximately 150,000-170,000 tons. Spent hydrodesulphurization (HDS) catalysts, one of the most used catalysts, account nearly one-third of the entire worldwide catalyst utilization. The spent HDS catalysts generally consist of 10-30% molybdenum, 1-12% vanadium, 0.5-6% nickel, 1-6% cobalt, 8-12% sulfur, 10-12% carbon. When looking at the ratio of the elements contained in HDS catalysts produced and spent in the world, these large amounts of used catalysts are potentially seen as a suitable secondary source for Molybdenum and Cobalt.
Molybdenum is also widely used in various industrial processes due to its high melting point, high strength at high temperatures, high thermal conductivity, and good corrosion resistance. With the rapidly increasing demand for molybdenum and its products, recovery processes from used catalysts, which are seen as secondary sources, have become the work of today and the future. In addition, Process Makina has provided technological solutions by recovery, recycling and refinery systems in every field. Thus, you can recover the elements such as Mo, Co, Ni, V from spent catalysts with high efficiency by using the systems of Processes.