湿法冶金2024，Vol.43Issue(5)：551-558,8.DOI:10.13355/j.cnki.sfyj.2024.05.011
锰尾矿的硝酸浸出行为及浸出产物催化性能研究
Nitric Acid Leaching Behavior of Manganese Tailings and Catalytic Performance of Leaching Products
摘要
Abstract
In order to realize resource utilization of solid waste and effective control of nitrogen oxides in low-temperature flue gas,the preparation of high efficiency manganese and zeolite NH3-SCR catalysts from low-grade manganese tailings was studied.The initial concentration of nitric acid,liquid volume to solid mass ratio,leaching temperature and leaching time were optimized by single factor method and response surface method.The catalytic performance of the catalyst prepared by the leaching products was tested.The results show that under the optimum conditions,the manganese leaching rate reaches 98％.The catalyst has excellent denitrification performance in the temperature range of 200～350 ℃,and the conversion rate of NO reaches 98％.By optimizing the leaching process parameters,the high efficiency utilization of low-grade manganese tailings can be realized,and the catalyst with remarkable denitrification effect can be prepared,which has broad prospects in industrial application.关键词
锰尾矿/制备/催化剂/响应曲面法/优化/脱硝/固废/资源化Key words
manganese tailings/preparation/catalyst/response surface method/optimization/denitration/solid waste/utilization分类
矿业与冶金引用本文复制引用
陈燕,贺文广,喻璐,刘德华,童雪菲,吴泓利,何民宇,刘清才,刘维燥..锰尾矿的硝酸浸出行为及浸出产物催化性能研究[J].湿法冶金,2024,43(5):551-558,8.基金项目
国家自然科学基金面上项目(52174382). （52174382）
