The shortage of platinum resources in China is serious.Platinum is indispensable in chemical industry,petroleum refining,automobile exhaust treatment and other industries.The primary platinum ore reserves are limited,mining is difficult,mining and smelting energy consumption is high,the cost is high,and it is also easy to cause environmental problems such as surface subsidence,vegetation deterioration,waste residue and wastewater pollution in the mining area.The waste platinum catalyst contains a large amount of platinum and can be reused after recovery.Economically,the recovery of platinum group metals can reduce the dependence on primary platinum ore,and the cost is low and the enterprise benefit is high;In terms of environment,avoiding excessive resource demand and environmental damage,reducing waste discharge,complying with the concept of resource recycling and environmental protection,which is conducive to China's sustainable development.The methods of recovering platinum from platinum group secondary resources were introduced,with emphasis on the leaching and platinum enrichment processes and the corresponding advantages and disadvantages,as well as the current mainstream recovery methods and the prospect of platinum recovery in the future.
platinum group metalsseparation technologywaste catalystpretreatment
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