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该发明聚焦于双相不锈钢冶炼工艺的优化，旨在降低钢水氢含量，进而提升双相不锈钢板材的性能与质量。
通过精准调控石灰、萤石加入时机，在双相不锈钢冶炼过程中，对关键辅料的添加环节进行创新。具体而言，在AOD炉还原期及还原期结束后，不加入石灰、萤石。AOD出钢后，于钢包内开展扒渣操作，严格控制扒渣后钢渣厚度≤50mm 。此步骤旨在减少钢渣对钢水的影响，为后续环节奠定基础。
扒渣操作完成后，向钢包内加入特定量的石灰和萤石，石灰加入量为2 – 5kg/吨钢，萤石加入量为1 – 3kg/吨钢 。添加后，进行钢包底吹Ar搅拌，底吹Ar强度控制在吨钢6 – 10NL/min ，搅拌时间为10 – 15min 。该操作促使钢水成分更加均匀，有...
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“精准调控石灰、萤石，真能有效降低氢含量？这方法会不会增加成本？”