进口含金属物料的固体废物鉴别方法研究

Study on Solid Waste Identification Methods for Imported Metal-Containing Materials

基于已完成的112例进口含金属物料的固体废物鉴别实践,系统地介绍了进口含金属物料的申报品名及各品名所占比例,种类及各种类的特征、固体废物鉴别关键方法和每种鉴别结果所占比例,其中申报品名主要为矿石(砂),所占比例为51.8%;鉴别结果主要为冶炼渣,所占比例为37.5%。提出对于进口的含金属物料,通过测量主要成分和含量、最主要金属元素及典型重金属元素的含量、物相组成、矿相组成,对于极细的粉末等特殊物料,还需要粒度分析等辅助试验,确定其产生来源。如果确定属于金属冶炼过程中产生的副产物、污染控制设施或环境治理过程中产生的物料、含金属废料简单加工处理产物、矿物采选过程中产生的废弃物,那么鉴别物料属于固体废物。

Based on 112 cases of solid waste identification for import metal-containing materials,this paper systematically introduced the declaration names,types and proportion of these import metal-containing materials.The characteristics of different type of metal-containing materials as well as the critical methods for identifying their solid waste properties were discussed. Results showed that the main declaration name was ore,which accounted for 51. 8% of total imported metal-containing materials. The identification results showed that 37. 5% of import metal-containing material was smelting slag. This paper would provide technical references for supervising and identifying the solid waste property of import metal-containing materials,which had great significance for preventing the import of smelting slag,mud,dust and other metal-containing solid waste.