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China Nonferrous Metals Industry Association held an evaluation meeting on the scientific and technological achievements of the research on the application of treating waste printed circuits boards by pyrometallurgic methods and related demonstrative projects in Shantou, Guangdong Province on July 20, 2018. After onsite inspection on the demonstrative production line and hearing the special report followed by questioning section, the evaluation penal made up by seven prestigious experts in China’s metallurgy and environmental protection fields reached a unanimous conclusion: the project finished by CECEP based on its independent intellectual properties has reached international advanced level.
The project developed new techniques and equipment sets to treat waste printed circuits boards by bathing smelting in oxygen-enriched furnaces. A demonstrative production line with a production capacity of 10,000 tons was built up, capable of recovering over 95 percent of valuable metals like copper, gold, silver and palladium in waste printed circuits boards while producing slag with copper contents less than 0.7 percent. The lifespan of refractory materials used in the furnace body surpasses 12 months, and all indicators for environmental protection meet the related standards. Core technology and equipment in effectively recycling valuable metals in an environmentally friendly manner are established, which can be duplicated and promoted in a wider range. New avenues for treating waste printed circuits boards in a harmless manner for resource recycling purposes have been opened up.
