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首页> 外文期刊>ISIJ international >Pre-modern Refining Process of “Okaji” without Deoxidation
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Pre-modern Refining Process of “Okaji” without Deoxidation

机译：在不脱氧的情况下对“ Okaji”进行前现代精制

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In Tatara process, steel “kera” and pig iron “zuku” were produced. Pig iron and low quality of steel “Bugera” in these products were decarburized with air by hand blowing to produce steel plates with low carbon content, called “Hochotetu” or “Waritetsu”. The decarburization in pre-modern refining process was called “Okaji” and composed of two processes of “Sageba” and “Honba”. In the Sageba process, pig iron was decarburized to steel with about 0.7 mass%C, called “Sagegane” and the yield was almost 100%. In the Honba process, the Sagegane was decarburized to steel with about 0.1 mass%C, called “Oroshigane”, without deoxidation and the yield was 60 to 70%. The Orosigane was promptly forged to make plates. Thus, the contents of oxygen in Hochotetsu was about 0.2 mass%. The Okaji process has been examined in the present work. In the Sageba process, pig iron was decarburized by FeO slag, called “Noro”, with CO gas bubbling at about 1400°C. In the Honba process, the temperature in furnace was kept about 1450°C. Sagegane was oxidized by oxygen gas in air to generate heat and the temperature of Oroshigane increased to near 1528°C. The temperature of furnace during Okaji process was carefully controlled by blowing rate and keeping moisture in hearth of wet charcoal bed. Water was sometimes poured during operation.
机译：在塔塔拉（Tatara）工艺中，生产出了钢“ kera”和生铁“ zuku”。将这些产品中的生铁和劣质钢“ Bugera”通过吹气用空气脱碳，以生产出碳含量低的钢板，称为“ Hochotetu”或“ Waritetsu”。前现代炼油工艺中的脱碳称为“冈治”，由“ Sageba”和“ Honba”两个工艺组成。在Sageba工艺中，生铁被脱碳为钢，碳含量约为0.7质量％，称为“ Sagegane”，收率接近100％。在Honba工艺中，将Sagegane脱碳为含约0.1质量％C的钢，称为“ Oroshigane”，不进行脱氧，收率为60％至70％。 Orosigane被迅速锻造成板。因此，细丁铁中的氧含量为约0.2质量％。在目前的工作中，已经对Okaji程序进行了研究。在Sageba工艺中，生铁被FeO炉渣（称为“ Noro”）脱碳，CO气体在1400°C左右鼓泡。在Honba工艺中，炉内温度保持在约1450℃。鼠尾草烷在空气中被氧气氧化产生热量，而Oroshigane的温度升至1528°C附近。通过吹气速度并在湿木炭床的炉膛中保持水分，精心控制了冈治过程中的炉温。在操作过程中有时会倒水。

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