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铁水脱硫主要有喷粉和机械搅拌［ＫＲ］两种方法。鹿岛制铁所第一炼钢厂因主要生产厚板和高级薄钢板，所以采用的是脱硫能力高的ＫＲ法；第二炼钢厂由于生产的是普通薄钢板，因而用的是喷吹法。为了充分应用两种不同的方法，该所开发了一种从喷吹（脱硫后）到ＫＲ的脱硫渣再利用工艺。这种新工艺减少了ＫＲ石灰的消耗，使得生产成本降低５０％。另外，为了提高脱硫效率缩短脱硫时间以及延长叶片寿命，对叶片形状进行了研究。研究结果，进一步降低了ＫＲ的生产成本。鹿岛制铁所仍在继续努力，力图通过改进工艺来满足用户要求以及降低生产成本。
Hot metal desulfurization are mainly two methods of dusting and mechanical stirring [KR]. The Kashima-Shinagawa Steel Works No. 1 Steel Plant used the KR method with high desulfurization capacity due to its main production of thick plates and high-grade steel sheets. In the second steelworks, because it produced plain steel sheets, law. In order to fully utilize the two different methods, a desulphurization slag reutilization process has been developed from injection (desulfurization) to KR. This new process reduces KR lime consumption, resulting in a 50% reduction in production costs. In addition, in order to improve the efficiency of desulfurization to shorten the desulfurization time and prolong the life of the leaves, the leaf shape has been studied. The results further reduce the production costs of KR. Kashima Iron and Steel Institute is still continuing its efforts, trying to improve the process to meet user requirements and reduce production costs.