富铁电镀污泥合成磁性探伤粉的研究  

Synthesizing of Magnetic Powder from Electroplating Sludge

作　　者：贾金平[1] 何翊[2] 陈兆娟 陈永 

机构地区：[1]上海交通大学 [2]上海交通大学 上海 200030 [3]上海 200030 [4]上海 200030

出　　处：《上海环境科学》1996年第4期31-33,共3页Shanghai Environmental Sciences

基　　金：国家"八五"课题(909-02-02)资助项目

摘　　要：以含铁质为主的混合重金属氢氧化物电镀污泥及FeSO_4·7H_2O为原料,采用湿法合成和干法还原的工艺,进行了合成磁性探伤粉的研究。确定了干法还原的最佳条件为反应温度750℃,还原时间10min。并通过对由两种方法得到的污泥:FeSO_4·7H_2O(W/W)=1:1～1:8的产品进行性能检验,测得经湿法合成的1:7、1:8产品,经干法还原后的1:1～1:8产品均可在实际中应用。对富铁污泥,从污泥消纳量和成本考虑,以干法合成的1:1、1:2产品最有发展前途。Study on the synthesizing of magnetic powder from electroplating sludge, especially from sludge with high Fe(OH)3 and low mixed heavy metals has been conducted. By using the sludge: FeSO4·7H2O(W/W) =1: 1- 1:8 as raw material with the wet method and dry method, the optimum synthesizing conditions of dry method was reducing 10 min under 750℃. Testing for magnetic powder character and application to nondestructive flaw detection, it proves that the wet method products of 1:7 and 1:8 are available for use, the dry method products are all preferable, especially the products of 1: 1 and 1:2 will reduce the cost.

关 键 词：电镀污泥 富铁污泥 磁性探伤粉 合成 废水处理 

分 类 号：X781.03[环境科学与工程—环境工程]