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发明公开
CN110093473A 高氮马口铁的生产方法 有权

高氮马口铁的生产方法
摘要：
本发明属于炼钢生产技术领域，尤其涉及一种高氮马口铁的生产方法。该生产方法包括：步骤1)：将废钢、铁水装入到转炉内；步骤2)：在转炉内，根据入炉废钢、铁水重量、成分，计算机模型对供氧吹炼的参数进行计算，并进行吹炼；步骤3)：吹炼结束后，控制转炉吹炼结束时钢水温度在要为1660-1680℃范围；并测试钢水成分；步骤4)：根据获得的钢水成分，调整钢水中的合金成分；步骤5)：钢水中的合金成分调整完毕后，出钢。本发明的一种高氮马口铁的生产方法，通过对供氧吹炼中的底吹介质、底吹强度以及供氧强度的参数进行设定，从而能提高高氮马口铁终点命中率，解决了传统转炉冶炼工艺钢水氮含量难以达到目标含量要求的问题。
摘要（英）：

The invention belongs to the technical field of steelmaking production, and especially relates to a production method of high-nitrogen tinplate. The production method includes the following steps: step 1), filling a converter with scrap steel and molten iron; step 2), in the converter, calculating parameters of oxygen-supply blowing by a computer model according to the weight and composition of the scrap steel and the molten iron in the converter, and carrying out blowing; step 3), after the blowing is ended, controlling temperature of molten steel at the end of the blowing in the converter at1660-1680 DEG C, and testing composition of the molten steel; step 4), adjusting alloy composition in the molten steel according to the obtained composition of the molten steel; and step 5), after the adjustment of the alloy composition in the molten steel, tapping the steel. The production of the high-nitrogen tinplate of the invention sets a bottom blowing medium, bottom blowing intensity and the parameters of oxygen supply intensity in the oxygen-supply blowing so as to improve the end point hit rate of the high-nitrogen tinplate, and solves the problem that the nitrogen content of moltensteel in a conventional converter smelting process has difficulty in meeting a target content requirement.

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