PDF (2352K)
摘要
对碱性材料和磷酸盐化学键合陶瓷材料(CBPCs)固化/稳定化处理电解锰渣(EMR)的效果以及固化机理等方面进行了综述。传统的碱性材料虽可有效固化EMR中的重金属离子,但处理后的EMR的物理化学性质不够稳定,固化体很容易因碳化而发生结构破坏,存在二次污染隐患。而用CBPCs固化EMR虽可实现Mn以及NH3-N稳定化控制,但施工操作性差,且反应原料MgO成本较高。利用富含金属氧化物(MgO、FeOx)的镍铁渣或铜渣等工业废渣代替纯MgO,不仅可降低材料处理成本、改善施工可操作性,同时可通过化学键合、物理包裹、吸附等协同作用实现EMR的有效固封。此方法可为EMR处理提供一种研究思路。
Abstract
The effects and mechanism of solidifying/stabilizing electrolytic manganese residue (EMR) by alkaline materials and chemically bonded phosphate ceramics (CBPCs) are elaborately reviewed.Although traditional alkaline materials can effectively stabilize/solidify heavy metal ions in EMR,the physicochemical properties of the treated EMR specimens are not very stable due to that the structure of the solidified specimens is easily destroyed by carbonization,leaving hidden risk of secondary pollution.While the solidification/stabilization of Mn and NH3-N by CBPCs also has some weakness such as poor operability and high cost for reaction material MgO.Replacing pure MgO with ferronickel slag or copper slag rich in metal oxides (MgO,FeOx) can reduce the cost of treating materials and remarkably improve operability,also achieve effective treatment to EMR by the synergistic functions of chemical bonding,physical packaging and adsorption.This method can provide a research idea for treatment of EMR.
关键词
电解锰渣
/
磷酸盐化学键合材料
/
碱性材料
/
固化/稳定化
/
污染
Key words
electrolytic manganese residue
/
chemically bonded phosphate ceramics
/
alkaline materials
/
solidification/stabilization
/
pollution
Author summay
电解锰渣中Mn和NH3-N固化/稳定化处理研究现状及展望[J].
, 2020, 40(4): 17-21 DOI:10.16606/j.cnki.issn0253-4320.2020.04.005