摘要：采用一种新的循环抽提法对6种转炉钢渣粉体进行溶出性能测试,研究其溶出特性与溶出机理。结果表明:钢渣中Ca²⁺的溶出速率最大,Si⁴⁺次之,Al³⁺最小。钢渣粉体中各可溶性组分的溶出量与其原料中该组分质量分数之间并不存在显著的相关关系。钢渣粉体离子溶出速率可用简化动力学方程g(α)=Kt表示,其中Ca²⁺的溶出过程最符合由固膜扩散控制的缩芯模型特征,而Si⁴⁺、Al³⁺的溶出过程同时还与溶出界面上发生的化学反应有关。

关键词： 转炉钢渣粉体；溶出特性；缩芯模型

Abstract：The dissolution experiments of soluble components from converter steel slag powder were carried out and the dissolution characteristics and mechanism was studied through evaporation-condensation method. The results showed that the most quality of dissolution was Ca²⁺， Si⁴⁺ was the second and Al³⁺ was the least. The dissolved amount of soluble components had no significant correlation with its chemical composition in materials. The dissolving rate was expressed as simplified kinetic equation g（α） = Kt. The dissolving process of Ca²⁺ was in accord with the characteristics of shrinking unreacted core model controlled by intra-particle diffusion. ForSi⁴⁺ and Al³⁺， their dissolving process was also in connection with chemical reaction occurring on the dissolving interface. 

Keywords： converter steel slag powder； dissolution characteristics； shrinking unreacted core model