硅钙热力学计算

唐山市丰润区京丰硅钙厂 联系人：王厂长 电话：86-0315-5235400- 传真：86-0315-5235400- 地址：河北省唐山市丰润区新军屯欢喜庄东偏坨地图 邮编：063000 企业网站：唐山市丰润区京丰硅钙厂 CaOs+Al2O3s=CaOAl2O3s G0=-18000-18.83T 2All+1.5O2(g)=Al2O3s G0=-1682900+323.24T Mgg+0.5O2g=MgOs G0=-732700+205.99T 2CaOs+SiO2s=2CaOAl2O3s G0=-118800-11.3T Sis+O2g=SiO2s G0=-907100+175.73T CaOs+2Al2O3s=CaO2Al2O3s G0=-16700-25.52T CaOs+6Al2O3s=CaO6Al2O3s G0=-16380-37.58T 化学方程式关系式标准吉布斯自由能G02CaO(s)+2MgO(s)+Si(s)= 2CaOSiO2(s)+2Mg(g)2439500-247.55T3497200-313.56TCaO(s) + 6MgO(s) + 4Al (l)= 6Mg(g) + CaO2Al2O3 (s)261013700-614.98TCaO(s) + 18MgO(s) + 12Al (l)= 18Mg(g) + CaO6Al2O3 (s)6183074820-1805.96T3497200-313.56TCaO2Al2O3(s)+ 12MgO(s) + 8Al(l) = 12Mg(g) + CaO6Al2O3(s)4122061120-1190.98T 表1 真空硅热和铝热还原炼镁标准状态下的热力学数据Table 1 The thermodynamic data of producing magnesium by silicothermic and aluminothermic reduction in standard condition方程式编号化学反应方程式标准吉布斯自由能标准状态下反应温度/K11775.4021568.8831585.6641648.3551702.60表2 真空铝热还原炼镁真空条件下的反应温度Table 2 The reduction temperature of silicothermic and aluminothermic reduction in different degree of vacuum方程式编号实际吉布斯自由能反应压力时，反应开始温度/K1.33Pa13.3 Pa10 Pa11011.581109.341096.232841.16929.50917.563854.60948.22935.544862.19955.54942.925881.49978.12965.04