本邦製鋼業の發達及現状

Abstract

1. Introduction.A brief statement of the steel making process and development to the present days of the steel industry in Japan.2. Past-war development of the steel plant.The reconstructions and improvements of the steel plants, newly designed open-hearth furnaces built recently in the Kamaishi Mining and Co., Kawasaki Ship-building & Co. and the Kobe Steel Works, and the greater tonnages of production resulted from them.3. Relations between pig-iron capacity and steel capacity, increased use of scrap.Pig-iron production of the blast furnace plants in Japan, and compared with the amount required for steel production, increasing use of scrap.4. Efficiency of steel plant and the steel making process.Steel ingot productions of the steel plants in Japan. The improvements of steel making practice: - fore-freshing mixer practice and open-hearth furnace practice combined with fore-freshing mixer.Talbot process using fore-freshed iron: - fore-freshing practice and Talbot furnace working practice using fore-freshed iron. Close the acid Bessemer plant.5. Steel making process and fuel economy.Utilizations of coke oven gas, blast furnace gas, and coal tar. Recovery of the waste heat from open-hearth furnaces, and the application to be extended to every sorts of furnaces. Steam generation by the waste heat of gas. Open-hearth furnaces slag used in the blast furnace charge and mill scale in open-hearth furnace.6. Tables: Table of pig-iron production. Table of steel production. Table of pig-iron import, export and demand. Table of steel import, export and demand. Table of ferro-alloys consumption.7. Supply and training of labourers.Labourer in the open-hearth furnace working and regulation: One and three shifts per day and the working time. Numbers of labourers and monthly income in the Imperial Government Steel Works.8. Present positions and future extention of the Japanese steel industry. Present position of the Japanese steel industry: Present steel plants and future extention scheme designing now. Japanese steel productions compared with those of other countries in Europe and America.Table of numbers and capacities of the blast furnaces and all the steel making furnaces in Japan.