Abstract
(1) We tried some steel making reactions to reduce into the electric potential curves. Namely, the potential differences between C or SiC electrodes and reacting vessels in higher temperatures were compared with a certain Ag-standard half cell. By expanding to larger scales, many important reactions will be further analysed.
(2) Refering to the former term, we determined the activities and activity coeffieients of several components which were assumed neutral. But molten slags are mostly dissociated into ions, and so we wish to think about the activities in such points of view.
(3) We analysed some reactions statistical-thermodynamically. Some reactions were classified in several types, and decarburizing reactions and gas removing ones were served as two examples.
(4) Molten slags were studied physico-chemically. Slags are the ionic lattices in room temperatures, and in higher they decompose into anions and cations. So molten slags were decomposed by D.C. and the deposits were analysed polarographically. Next, we measured the dielectric constants of molten slags and concluded that they were polarized by the dipole moments im higher temperatures.
