Abstract
The carbon content in the produced pig iron in relation to the change of the charging combination is chiefly treated in the present investigation. The construction and dimension of the furnace are generally same as that of the first report, in consideration of some facts indicated in the previous conclusion. The effects of the changes of the charging combination on the products were examined, and, in general, the carbon content of the products increases proportionally to the coke ratio of the charge. That effect changes in accordance with the various kinds of coke, and in the present experiments, A gas coke which consisted of the fixed carbon is largest and ash content which was smallest as compared with the other kinds of coke, were most effective. There seems to be no relation between the basicity of slag and the absorption of carbon, The addition of the pig iron scrap to the combination of the charge could not be seen to be always effective in the carbon absorption. Tensile strength and hardness of the products are in inverse proportion to the carbon content.
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