【摘要】 通过具体的应用实例,系统介绍了在矿物材料学研究中硅酸盐体系的多相平衡反应热力学的基本原理。对硅酸盐体系的典型多相平衡反应进行了热力学计算,包括:(1)微晶玻璃制备过程中的硅酸盐熔融反应;(2)霞石正长岩和高铝粉煤灰利用技术中的硅酸盐烧结反应;(3)S iO2-CaO-H2O体系和KA lS i3O8-CaO-H2O体系雪硅钙石、硬硅钙石的水热晶化反应;(4)高铝粉煤灰和霞石正长岩烧结产物的溶解反应;(5)Na[A l(OH)4]-A l(OH)3-H2O体系和Na2SO4-Ca(OH)2-H2O体系中α-A l(OH)3和CaSO4.2H2O的析晶反应。研究成果可望对矿物材料制备实验方案设计、工业生产过程优化及改进产品性能提供理论指导,同时为同类材料学研究提供借鉴。更多还原

【Abstract】 The basic principles of thermodynamics in multiple silicate systems were briefly reviewed with several typical approaches to mineral materials science.The thermodynamic calculations of the Gibbs free energies for typical multiple phase equilibria in silicate systems were performed,including （1）melting reactions of silicate reactant in processing of the glass-ceramics;（2）sintering reactions in utilizations of nepheline syenite and high-（alumina） flyash;（3）crystallizing reactions of tobermorite and xonotlite in both systems of SiO₂-CaO-H₂O and KAlSi₃O₈-CaO-H₂O;（4）dissolution reactions of the sintering products of the high-alumina flyash and nepheline syenite;and（5）crystallizing reaction of α-Al（OH）₃ and CaSO₄·2H₂O in system of Na_Al（OH）3-H₂O and Na₂SO₄-Ca（OH）₂-H₂O,respectively.Approaches to reaction thermodynamics for multiple phase equilibria in silicate systems are in theory of significance for designing experimental scheme of preparing mineral（materials）,optimizing processing techniques in industry,enhancing the properties of mineral materials products.The current research could also be used for reference in approaching to the similar mineral materials.更多还原