熔鐵中の珪素, 熔滓及び H_2/H_2O 混合瓦斯間の平衡 (III) : (SiO_2)_<Al_2O_3-CaO(S)>+2H_2=Si___-+2H_2O 反應の平衡の測定

概要

論文の詳細を見る
Using a CaO crucible, authors measured the equilibrium the following reaction under the conditions of 2CaO・SiO_2 3CaO・SiO_2 or CaO saturation at the temperatures of 1550°and 1700℃, (SiO_2)_<Al_2O_3-CaO(S)>+2H_2=Si___-+2H_2O……(1) At the reaction (1), the equilibrium constant became as follows. K=P^2H_2・αSiO_2/P^2H_2O・Si___-……(2) Further, as already published in the first report, the reaction and the equilibrium constant at the system, saturated by SiO_2 were given respectivelly as follows. (SiO_2)_<(s)>+2H_2=Si___-+2H_2O……(1)′K^S=P^2H_2/P^2H_2O・Si___-……(2)′If the activity of pure SiO_2 was taken to unity as the standard state of αSiO_2, K and K^S ought to be equal at a given temperature, thus, αSiO_2 in the slag of SiO_2-CaO-Al_2O_3 system was calculated from following equation ; αSiO_2=K^S・Si___-・P^2H_2O/P^2H_2……(3) Finally, authors determined the liquidus at the temperatures of 1550℃ and 1600℃ on the CaO side of SiO_2-CaO-Al_2O_3 ternary diagram from equilibrium compositions of slag.
1952-09-25