Abstract
The chemical composition of phosphogypsum,including the content of major compounds and impurity elements is analyzed,to provide theoretical guidance for the comprehensive utilization risk assessment of phosphogypsum.Taking phosphogypsum and modified phosphogypsum as the research object,the chemical composition and content were determined by X-ray powder diff(XRD),X-ray fluorescence spectrometry(XRF),and inductively coupled plasma emission spectrometry(ICP-OES).The results show the main minerals of phosphogypsum are composed of a mixed phase of dihydrate calcium sulfate,hemihydrate,and anhydrous calcium sulfate,the main impurities are calcium silicate and mixed salts of silicon,aluminum,phosphorus,and fluorine;the main oxides in phosphogypsum include CaO,SO3,SiO2,Fe2 O3,K2 O,Na2 O,Al2 O3,SrO,BaO,P2 O5,TiO2,MgO,CuO,NiO,and the trace elements include Pb,Cd,Cr,Hg,As,Zn Sb,Mn,Mo,V,and the trace elements include Be,Se,Pt,Au,W,Pd,Sn.关键词
磷石膏/化学成分/重金属/二水硫酸钙/工业固体废物/综合利用Key words
Phosphogypsum/Chemical Composition/Heavy Metal/Dihydrate Calcium Sulfate/Industrial Solid Waste/Comprehensive Utilization分类
矿业与冶金
