氰化尾渣制备铁碳微电解填料降解苯甲羟肟酸废水  

Preparation of Iron-Carbon Micro-electrolysis Filler from Cyanide Tailings and Its Degradation Performance for Benzohydroxamic Acid Wastewater

作　　者：汪东芳 刘如春 韩梦婷 余文[4] WANG Dong-fang;LIU Ru-chun;HAN Meng-ting;YU Wen(BGRIMM Technology Group,Beijing 100160,China;Yichun Tantalum Niobium Mine Co.,Ltd.,Yichun 336000,Jiangxi,China;NanjingYinmao Lead-Zinc Mining Co.,Ltd.,Nanjing 210033,China;Faculty of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]宜春钽铌矿有限公司,江西宜春336000 [3]南京银茂铅锌矿业有限公司,南京210033 [4]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《有色金属（冶炼部分）》2023年第7期110-116,共7页Nonferrous Metals（Extractive Metallurgy)

基　　金：江西省主要学科学术技术带头人培养计划资助项目(20212BCJL23051);江西省重点研发计划项目(20203BBGL73232);江西理工大学清江优秀青年人才计划项目(JXUSTQJYX201806)。

摘　　要：氰化尾渣是黄金氰化提金过程中产生的主要危险固体废弃物。以氰化尾渣为原料,利用其较高的铁品位,通过还原焙烧制备铁碳微电解填料,通过探究填料制备条件和降解条件对苯甲羟肟酸废水降解效果的影响,考察该填料用于处理苯甲羟肟酸废水的可行性。结果表明,最佳焙烧条件为:焙烧温度1200℃、无烟煤用量20%、焙烧时间10 min;最佳降解条件为:铁碳微电解填料用量3.75g/L、溶液pH=4,该条件下,废水中的苯甲羟肟酸去除率可达80%以上。该方法不仅实现了氰化尾渣的资源化利用,而且可以有效降解苯甲羟肟酸废水,实现了“以废治废”的目的。Cyanide tailings are the main hazardous solid wastes produced in the process of gold cyanidation and gold extraction.Iron-carbon micro-electrolytic filler was prepared by reduction roasting from cyanide tailings with high iron grade.The feasibility of treating benzohydroxamic acid wastewater was investigated by exploring the influence of preparation conditions and degradation conditions of fillers on the degradation effect of benzohydroxamic acid wastewater.The results show that the removal rate of phenylhydroxamic acid in wastewater is 80%above under the optimum roasting conditions including roasting temperature of 1200℃,anthracite consumption of 20%,and roasting time of 10 min,and the optimum degradation conditions including dosage of iron-carbon micro-electrolysis filler of 3.75g/L and pH value of the solution of 4.This method not only realizes the resource utilization of cyanide tailings,but also effectively degrades benzohydroxamic acid wastewater,and achieved the purpose of“treating waste with waste”.

关 键 词：氰化尾渣 还原焙烧 微电解填料 苯甲羟肟酸 废水处理 

分 类 号：X52[环境科学与工程—环境工程]