Treatment System for Catalyst Containing Valuable Metals

Petroleum refining enterprises produce a large amount of catalyst waste in production operations. The treatment system for catalysts containing valuable metals developed by Dalian Dong Tai allows it to apply plasma technology to the comprehensive utilization and treatment of such hazardous waste. Through melting of waste in a plasma oven, the system can extract rare metals such as cobalt, nickel, molybdenum, vanadium, etc. from waste catalysts. The slag produced by extraction can be used as a raw material to produce cement. This technology has won the third prize of National Technology Advancement and is sponsored by the National Technology Innovation Funds for Small-and-Medium Sized Scientific and Technological Enterprise. The Technology has been authorized to Dalian Zhuorui Resource Recycling Co., Ltd. (Dalian Zhuorui), a 70% owned subsidiary of Dalian Dong Tai Industrial Waste Treatment Co., Ltd. (“Dalian Dong Tai”). Phase 1 capacity of Dalian Zhuorui now is 5000t/y, the overall capacity is 10000t/y. The products include: nickel sulfate, cobalt sulfate, ammonium molybdate, ammonium metavanadate etc.
The construction of Phase 1 has been completed, and the company continues final testing of its oxidation baking system, with several large-scale trials completed to date. However, the continuity of the production process is not yet stable and engineers are adjusting the production process to improve the effective yield to desired levels.