摘要
酸浸法可以有效去除聚氨酯筛网因长期使用而产生的结垢,恢复其筛分效率。采用2%草酸溶液浸泡聚氨酯筛网12 h可实现高效除垢,筛分效率恢复至62.33%;采用盐酸处理筛网结垢虽效率高,但废酸处理成本高,不推荐长期使用;0.5%盐酸与0.5%草酸混合溶液浸泡结垢筛网12 h后,其筛分效率与使用15天后聚氨酸筛网筛分效率相近,但配置酸溶液操作复杂,不推荐长期使用。考虑除垢后的废酸对环境的影响,采用2%浓度的草酸溶液浸泡12 h对使用180天后的筛网进行除垢处理。
The scale generated on polyurethane sieve mesh caused by long-term use could be effectively removed with the acid leaching method so as to recover its screening efficiency.The efficient descaling could be realized by soaking polyurethane sieve mesh in 2%oxalic acid solution for 12 h so that the screening efficiency could be recovered to 62.33%;although the descaling efficiency of sieve mesh with hydrochloric acid is high,treatment costs of waste acid is high,so it is not recommended for long-term use;the screening efficiency of soaking sieve mesh in the mixed solution of 0.5%hydrochloric acid and 0.5%oxalic acid for 12 h is similar to that of sieve mesh after using 15 days,but the operations of preparing acid solution are complex,so it is not recommended for long-term use.The 2%oxalic acid solution is used to soak the sieve mesh after using 180 days for 12 h to remove its scale considering the impacts of waste acid after descaling on the environment.
作者
贺旭然
赵增武
蒋海明
邓建林
赵建强
常文
杨宇超
He Xuran;Zhao Zengwu;Jiang Haiming;Deng Jianlin;Zhao Jianqiang;Chang Wen;Yang Yuchao(School of Mining and Coal,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia Autonomous Region,China;Inner Mongolia Key Laboratory of Mining Engineering,Baotou 014010,Inner Mongolia Autonomous Region,China;Inner Mongolia Research Center for Engineering Technology of Safe Coal Mining and Utilization,Baotou 014010,Inner Mongolia Autonomous Region,China;Inner Mongolia Collaborative Innovation Center for Green Mining and Green Utilization of Coal,Baotou 014010,Inner Mongolia Autonomous Region,China;School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,Inner Mongolia Autonomous Region,China;Baotou Steel Group Baoshan Mining Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)
出处
《包钢科技》
2025年第4期9-12,共4页
Science & Technology of Baotou Steel
基金
国家重点研发专项(0901052102)
内蒙古自治区直属高校基本科研业务费项目(2023RCTD002)。
关键词
酸浸
除垢
筛分效率
acid leaching
descaling
screening efficiency
