超声波预处理氧化钙对改善黄铜矿浮选效果的机理分析  

Mechanism Analysis of Ultrasonic Pretreatment of Calcium Oxide to Improve Chalcopyrite Flotation

作　　者：赵鑫[1] 彭祥玉 王宇斌[1] 田家怡 华开强 桂婉婷 ZHAO Xin;PENG Xiangyu;WANG Yubin;TIAN Jiayi;HUA Kaiqiang;GUI Wanting(School of Resources Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,Shaanxi,China)

机构地区：[1]西安建筑科技大学资源工程学院,陕西西安710055

出　　处：《矿产保护与利用》2023年第2期87-92,共6页Conservation and Utilization of Mineral Resources

基　　金：陕西省重点研发计划项目(2018GY-088)。

摘　　要：为揭示超声波预处理氧化钙对改善黄铜矿浮选效果的机理,以超声预处理的氧化钙为调整剂进行了黄铜矿的浮选试验。采用FTIR等手段对超声预处理的氧化钙溶液进行了表征。结果表明,适宜超声功率处理的氧化钙溶液对黄铜矿浮选效率的影响较为明显。500 g/t的氧化钙经输出功率为216 W的超声波处理后,精矿中铜的回收率达到了83.23%,与未处理相比提高了9.48百分点。适宜的超声波处理氧化钙溶液可使Ca^(2+)、Ca(OH)+和OH-等离子的含量增多,其中的Ca^(2+)、Ca(OH)+等离子可减弱矿泥对浮选药剂的消耗。此外,适宜的超声功率预处理还可使氧化钙溶液中有利于黄铜矿浮选的游离水羟基含量提高3.13百分点,进而改善黄铜矿的浮选效果。研究对超声波技术在浮选领域的应用具有一定的借鉴意义。To reveal the mechanism of ultrasonic pretreatment of calcium oxide to improve the flotation effect of chalcopyrite,the flotation of chalcopyrite was carried out with ultrasonic pretreatment of calcium oxide as the regulator.The ultrasonic pretreated calcium oxide solution was characterized by FTIR.The results revealed that the calcium oxide solution suitable for ultrasonic power treatment had obvious influence on the efficiency of chalcopyrite flotation.After 500 g/t calcium oxide was treated by ultrasonic wave with 216 W output power,the recovery of copper in concentrate reached 83.23%,which was 9.48%higher than that without treatment.Appropriate ultrasonic treatment of calcium oxide solution could increase the content of Ca^(2+),Ca(OH)+and OH-,and the Ca^(2+)and Ca(OH)+plasma could reduce the consumption of flotation agent.In addition,the appropriate ultrasonic power pretreatment could also increase the content of hydroxyl group in free water in calcium oxide solution which was conducive to the flotation of chalcopyrite by 3.13%,so as to improve the flotation effect of chalcopyrite.The research provides a reference for the application of ultrasonic technology in flotation field.

关 键 词：超声波 氧化钙 浮选 机理分析 

分 类 号：TD952.1[矿业工程—选矿]