弱酸改性钢渣微粉的光谱学分析

Spectroscopic Analysis of Weak Acid Modified Steel Slag Powder

以钢渣微粉作为研究对象,采用磷酸溶液改性钢渣微粉制备弱酸改性钢渣微粉,利用X射线衍射仪、比表面积及孔径测定仪和环境扫描电镜对弱酸改性钢渣微粉进行表征,研究弱酸改性钢渣微粉的组成成分、孔结构、微观结构和元素组成。结果表明,适量磷酸溶液可以有效去除钢渣微粉中f-CaO,提高弱酸改性钢渣微粉的孔结构。过量磷酸溶液与钢渣微粉中Ca(OH)_2发生反应,导致弱酸改性钢渣微粉结构坍塌,整体呈现蓬松状。80g钢渣微粉,1.6～3.2mL磷酸溶液时,弱酸改性钢渣微粉具有较低的f-CaO含量与良好的孔结构。为进一步拓展钢渣的利用途径提供一定的技术支持和理论基础。

Taking steel slag powder as the object of study,weak acid modified steel slag powder was prepared by phosphoric acid modified steel slag powder.Weak acid modified steel slag powder was characterized by X-ray diffractometer,specific surface area and aperture meter and environmental scanning electron microscope.Composition,pore structure,microstructure and element composition of weak acid modified steel slag powder were researched.The results showed that the proper phosphate solution can effectively remove the f-CaO in the steel slag powder and improve pore structure of weak acid modified steel slag powder.The excess phosphate solution reacts with Ca(OH)2 in steel slag powder,causing structure of weak acid modified steel slag powder to collapse,and showing fleeciness as a whole.When steel slag powder is 80 g and phosphate solution is 1.6~3.2 mL,weak acid modified steel slag powder has low f-CaO content and good pore structure.It provides technical support and theoretical basis for further expanding the utilization methods of steel slag.