电弧炉燃烧—碘量法测定钢铁中硫含量时,经常出现硫吸收液自动返蓝现象。这是电弧炉燃烧测定硫含量的一个疑难问题。作者根据实际经验认为产生定硫吸收液返蓝现象的原因为助熔剂硅钼粉吸水所致。为此,只需将助熔剂烘干(尤其黄霉天)即可。 Electric arc furnace combustion - Iodometric method for the determination of sulfur in steel, sulfur absorption liquid often appears automatically return blue phenomenon. This is a difficult issue for EAF combustion to measure sulfur content. According to the actual experience, the author thinks that the reason that the fixed sulfur absorption solution returns to blue phenomenon is caused by the flux of silicon molybdenum powder. For this purpose, only the flux must be dried (especially xanthium day).