超声波辅助锌冶炼铁渣脱水性能的研究  

Dewatering Performance of Iron Slag from Zinc Smelting Assisted by Ultrasonic Waves

作　　者：程越 代林晴[1,2,3,4] 张利波[1,2,3,4] 顾利坤 杨政[1,2,3,4] 周亮 CHENG Yue;DAI Linqing;ZHANG Libo;GU Likun;YANG Zheng;ZHOU Liang(School of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Clean Utilization of Complex Non-Ferrous Resources,Kunming University of Science and Technology,Kunming 650093,China;Key Laboratory of Special Sciences of Yunnan Province,Kunming 650093,China;Key Laboratory of Unconventional Metallurgy,Ministry of Education,Kunming 650093,China;Yunnan Chihong Zinc and Germanium Co.,LTD.,Qujing 655000,Yunnan,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]昆明理工大学复杂有色金属资源清洁利用国家重点实验室,云南昆明650093 [3]云南省特种重点实验室,云南昆明650093 [4]非常规冶金省部共建教育部重点实验室,云南昆明650093 [5]云南驰宏锌锗股份有限公司,云南曲靖655000

出　　处：《昆明理工大学学报（自然科学版）》2023年第5期9-15,共7页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家重点研发计划项目(2019YFC1904204)。

摘　　要：湿法炼锌产生的铁渣含有大量的锌、铁等有价金属,具有很高的综合回收利用价值,但其含水率普遍较高,影响后续有价金属的回收,因此需对其进行预脱水处理.研究了超声频率、超声时间及超声功率对铁渣滤饼含水率、比阻抗、CST等的影响.当超声波频率为20 kHz,功率70 W,超声时间20 s时,锌冶炼铁渣滤饼的含水率比未经处理的锌冶炼铁渣下降了2.84%,CST缩短了19.5 s,比阻抗值减小了53%.通过对比超声作用前后原料的粒度分布、SEM分析,表明超声波能调整铁渣颗粒的粒度分布,改变铁渣颗粒的形貌,从而影响其脱水性能.The iron slag produced from zinc hydrometallurgy contains a considerable amount of valuable metals such as zinc and iron,making it of high comprehensive recycling value.However,its high moisture content hinders the subsequent recovery of valuable metals,necessitating a pre-dewatering treatment.This study investigated the effects of ultrasound frequency,ultrasound duration,and ultrasound power on the moisture content,specific resistance,and capillary suction time(CST) of iron slag filter cakes.When the ultrasound frequency was 20 kHz,power was 70 W,and ultrasound duration was 20 s,the moisture content of the iron slag filter cake from zinc smelting decreased by 2.84% compared to untreated iron slag.The CST shortened by 19.5 s,and the specific resistance decreased by 53%.By comparing the particle size distribution and SEM analysis of the raw material before and after ultrasound treatment,it was demonstrated that ultrasound could adjust the particle size distribution of the iron slag and alter the morphology of slag particles,thereby affecting its dewatering performance.

关 键 词：超声处理 锌冶炼铁渣 脱水性能 

分 类 号：TF813[冶金工程—有色金属冶金] X758[环境科学与工程—环境工程]