无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2021, Vol. 53 ›› Issue (7): 92-95.doi: 10.19964/j.issn.1006-4990.2020-0497

• 环境·健康·安全 • 上一篇    下一篇

从钢厂含铬废水中制取铬-铁氧体的研究

鲁琴瑶(),张荣良,周涵,曾加,李聪   

  1. 江苏科技大学张家港校区冶金与材料工程学院,江苏张家港 215600
  • 收稿日期:2020-09-04 出版日期:2021-07-10 发布日期:2021-07-13
  • 通讯作者: 鲁琴瑶
  • 作者简介:鲁琴瑶(1994— ),女,硕士研究生,主要从事冶金废水处理研究;E-mail: 775134292@qq.com

Study on preparation of chromium-ferrite from chromium-containing wastewater in steel plant

Lu Qinyao(),Zhang Rongliang,Zhou Han,Zeng Jia,Li Cong   

  1. School of Metallurgy and Materials Engineering,Jiangsu University of Science and Technology (Zhangjiagang),Zhangjiagang 215600,China
  • Received:2020-09-04 Online:2021-07-10 Published:2021-07-13
  • Contact: Lu Qinyao

摘要:

为解决钢厂含铬废水的处理问题,采用超声波联合传统铁氧体法处理钢厂含铬废水,并从中回收了具有一定经济价值的铬-铁氧体产品。借助于XRD分析了产物的晶体结构,研究了硫酸亚铁和双氧水添加量、反应时间、超声波功率及pH对铬-铁氧体形成的影响,并对产物铬-铁氧体进行SEM分析和能谱分析。结果表明,当n(Fe2+)∶n(Cr6+)=7∶1、添加1.0 mL的3%H2O2、反应时间为30 min、超声波功率为40 W及调节pH=10时,能得到晶型较好的铬-铁氧体。铬-铁氧体颗粒为纳米级,其铁、铬、氧含量基本符合亚铬酸亚铁(FeCr2O4)中各元素含量要求。

关键词: 超声波, 铬-铁氧体, 含铬废水

Abstract:

:In order to solve the problem of treatment of chromium-containing wastewater from steel plant,the ultrasonic com-bined with traditional ferrite method was used to treat the chromium-containing wastewater from steel plant,and the chromium-ferrite products with certain economic value were recovered.The crystal structure of the products was analyzed by XRD.The effects of the content of ferrous sulfate and hydrogen peroxide,reaction time,sonication power and pH on the formation of chromium-ferrite were studied.The chromium-ferrite was examined by SEM and analyzed by energy spectrum.The results showed that whenn(Fe2+)∶n(Cr6+)=7∶1,adding 1.0 mL 3% H2O2,reaction time was 30 min,sonication power was 40 W and adjusting pH=10,the chromium-ferrite with good crystal form could be obtained.The chromium ferrite particles were nano-scale,and the contents of iron,chromium and oxygen basically met the requirements of each element content in ferrous chromite(FeCr2O4).

Key words: ultrasonic, chromium-ferrite, wastewater containing chromium

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