| The high efficient and quick dissolution of rhodium is an indispensable part and a recognized problem in the field of rhodium metallurgy. Microwave has the characteristics of thermal effect and non-thermal effect. Temperature and pressure in the dissolution system are rapidly increased and remain stable under microwave assisted dissolution. Meanwhile, microwave effect can reduce the reaction activation energy, and improve the chemical reaction rate between active chlorine and rhodium in the solution system. Under the conditions of aqua regia concentration 50%, system pressure 4 MPa and dissolution time 120 min, the dissolution rate of rhodium is 99.5% by microwave assisted dissolution. |
