<報文>熔鐵中の珪素, 熔滓及びH_2/H_2O混合瓦斯間の平衡(第2報) : (SiO_2)_<Al_2O_3-CaO(sat.)>+2H_2=Si+2H_2O反應の平衡測定

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Using a CaO crucible, the equilibrium of the following reaction was studied under the conditions of 2CaO・SiO_2,3CaO・SiO_2,or CaO saturation in the temperature range from 1,550° to 1,600℃. [chemical formula] The equilibrium constant of the reaction (1) becomes as follows : [chemical formula] As was already published in the previous papers, which reported on the SiO_2-CaO binary system saturated with SiO_2 or CaO, the activity of pure SiO_2 was taken at unity as a standard state of aSiO_2. In this case, K_<Si-H> and K^S_<Si-H> were equal at a given temperature. Thus, aSiO_2 in the molten SiO_2-CaO-Al_2O_3 ternary slag was calculated from the following equation : [chemical formula] Finally, the authors determined the liquidus line of 1,550° and 1,600℃ on the CaO side of SiO_2-CaO-Al_2O_3 ternary diagram from the equilibrium compositions of slags.
1953-03-25