Abstract
This investigation was carried out in order to ascertain the effect of chlorination upon the purification of metal.(1) The course of purification by chlorination in a large scale furnace was similar to one in a small scale furnace, but the consumption of chlorin decreased with the increase of surface.(2) The purification by chlorination was carried out by physical and chemical action, above all it is due to the latter to achieve the purpose of purification in shorter hours.(3) The change of the specific gravity or α in the course of chlorination was different according as the gas content of the metal.(4) It is always required to stand the metal for some hours after chlorination and the relation between this time, the temperature, the size of the gas particles dissolved in the molten metal and the depth of metal was introduced theoretically.
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