摘要
采用X射线荧光光谱、X射线衍射等技术,结合超景深显微镜、扫描电镜等设备,对某含铅样品进行化学成分、物相组成和微观形貌分析,判断是否为固体废物。结果表明:样品主成分为Pb_(3)(CO_(3))_(2)(OH)_(2),PbSO_(4)和Na_(2)SO_(4)等,并且含有大量玻璃态的钠钙铝硅酸盐和呈球状、椭球状、串珠状的金属铅和铅铁氧化物。样品中的硫酸铅呈疏松、胶状,具有湿法冶炼产物的形貌特征;大量的玻璃态硅酸盐和呈熔融球状的金属铅具有火法冶炼产物的形貌特征,样品成分及微观形貌与铅矿有显著差异,呈现混合湿法冶炼和火法冶炼渣的特征。因此,推断该样品为来源于含铅矿物的湿法冶炼渣和火法冶炼渣的固体废物。
X-ray fluorescence spectroscopy and X-ray diffraction technologies with ultra depth of field microscopy and scanning electron microscopy equipment were used to analyze the chemical composition,phase composition and micro morphology of a lead-containing sample to determined whether it was solid waste.The results show that the main composition of the sample were Pb_(3)(CO_(3))_(2)(OH)_(2),PbSO_(4) and Na_(2)SO_(4),and plenty of amorphous sodium calcium aluminosilicates and spherical,ellipsoid,beaded metal lead and lead iron oxides were found in the sample.The lead sulfate in the sample was loose and colloidal,which showed the morphological characteristics of hydrometallurgical products.The plenty of amorphous sodium calcium aluminosilicates and the molten spherical metal lead with the morphological characteristics of pyrometallurgical products.The composition and micro morphology of the sample were significantly different from those of lead ore,which showed the characteristics of mixed hydrometallurgy and pyrometallurgy slags.Therefore,it is inferred that the sample was solid waste from hydrometallurgical slag and pyrometallurgical slag lead-containing minerals.
作者
萧达辉
周君龙
洪秋阳
宋武元
钟志光
XIAO Dahui;ZHOU Junlong;HONG Qiuyang;SONG Wuyuan;ZHONG Zhiguang(Technology Center of Guangzhou Custom,Guangzhou 510623,China;Guangdong Institute of Resources Comprehensive Utilization,Guangzhou 510650,China)
出处
《理化检验（物理分册）》
CAS
2021年第2期25-29,共5页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
基金
国家质量基础的共性技术研究与应用(2018YFF0215401)。
关键词
含铅物料
化学成分
微观形貌
固体废物
lead-containing material
chemical composition
micro morphology
solid waste
