北京科技大学的学者为了研究含碳球团矿还原熔分机理，将分析纯的Fe2O氧化物和不同还原剂固结成球并进行等温还原实验，研究了温度、还原时间、配碳量、还原剂种类等条件对球团矿还原熔分行为的影响。进一步采用X射线衍射、扫描电子显微镜等手段表征了含碳球团在不同还原时间的微观结构及物相变化，实验结果表明：焙烧温度过低或过高含碳球团都不能良好熔分，配碳量增加可以提高球团还原和熔分速率，适宜的温度、碳氧摩尔比、还原剂分别是1400℃、1.2和煤粉。
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另外Ni会与炉气中的S发生反应形成熔点更低的NiS网状组织，会破坏钢锭在较低温度下形成的保护膜，使氧化加剧，氧化铁皮层厚度增加。加热工艺钢坯加热时，随着温度的升高，Fe和Ni的扩散家督，形成的富Ni的金属网丝和颗粒不断延伸，氧化层不断加厚，粘附性很强，对除磷造成困难。除磷系统除磷系统不合理，也会弱化除磷效果。控制措施是：化学成分下调NCr元素质量分数，至0.12%、0.13%，降低除磷难度；同时为保证钢板强度，上调C元素质量分数，至0.16%。
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