In sampling,the slags were difficult to separate from iron owing to bad flowability of melten iron,so the slags in melten iron could not float up to the surface of melten iron t.

• 找到了光谱分析结果不稳定的原因是由于铁水流动性差,渣铁不易分离,取样时铁水中渣在试样凝固过程中没有上浮形成夹渣,当试样进行光谱激发时造成异常放电。