有机硅废触体与浆渣高值化利用新工艺

New Technology of High Value Utilization of OrganicSilicon Waste Contact and Slurry Residues

针对有机硅废触体和浆渣的高值化利用,提出机械活化浸出—氧化酸浸联合新工艺,并巧妙融入“以废治废”的创新思路,符合绿色低碳可持续发展的要求。对不同浸出酸度、浸出时间、机械活化、过滤优化等影响因素进行试验研究。结果表明:在机械活化后浸出时间90 min、氧化酸浸液固比3∶1、废盐酸浓度8%、富氧空气量25 L/h、活性助剂添加量0.5%最佳条件下,Cu的浸出率高达96.3%,促进了Si的富集和高效回收。本研究可以为有机硅废触体和浆渣的高值化利用的解决方案提供参考依据。

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.