Abstract:Address to high-value utilization of organic silicon waste contacts and slurry residues, a new process combining mechanical activation leaching and oxidation acid leaching was proposed, and the innovative idea of "treating waste with waste" should be cleverly introduced, which would meet the requirements of green, low-carbon and sustainable development. The experimental studies were conducted on some factors, such as leaching acidity, leaching time, mechanical activation, and filtration optimization, etc. The results show that the leaching rate of Cu is up to 96.3% and simultaneously promoting the enrichment and efficient recovery of Si under the optimal process parameters including leaching time of 90 min after mechanical activation, solid ratio of oxidizing acid leaching solution of 3︰1, concentration of waste hydrochloric acid of 8%, oxygen enriched air of 25 L/h, and active additives addition of 0.5%. This study can provide reference for the solution of high value utilization of silicone waste contact and slurry slag.