摘要
利用最新热力学数据及KAlSi3O8-SiO2、CaO-Al2O3-SiO2、K2O-Al2O3-SiO2体系相图,对钾长石分别添加CaO和CaO+CaSO4的热分解进行了热力学分析,并拟定了可能的反应,在1100～1500K范围内计算了各反应的ΔGT0,确定了钾长石添加CaO+CaSO4制取K2SO4的物料配比范围,并得到了试验验证。
A thermodynamic analysis is made of the thermal decomposition of potassium-feldspar with the addition of CaO, or CaO ＋ CaSO4, making use of the latest thermodynamic data and phase diagrams of KAISi3Os - SiO2, CaO - Al2O3 - SiO2 and K2O - Al2O3 - SiO2 systems, and possible reactions are worked out. The △GT^0 of each reaction is calculated in the range of 1100 - 1500 K, and the material proportioning range for the addition of CaO ＋ CaSO4 in the production of K2SO4 is established, which is verified by experiments.
出处
《化工矿物与加工》
CAS
北大核心
2008年第10期4-7,共4页
Industrial Minerals & Processing
基金
国家自然科学基金项目(20877026)
