由我国工人阶级创造的、具有伟大战略意义的煤粉化铁炉,由于不用焦炭、炉型结构简单、操作方便、铁水温度高、硅、锰损耗少、碳、硫有减无增和节约大量废钢等特点,一出现,就显示出强大的生命力,在国内发展很快,出现了一片欣欣向荣新景象。但是,由于煤粉化铁炉是一项新生事物,对其机理、特性尚未全部被人们认识和掌握。一般,在试生产时,经常遇到积粉、喷渣、铁水温度不高等问题,其中主要的是铁水温度不稳定,忽高忽低,由此造成操作紧张,甚至被迫停炉。我厂在开始试生产时,铁水温度也是不稳定的,时而低到1370℃,时而高 Coal-fired iron furnaces, which are created by the working class in our country, are of great strategic significance because they do not have coke and have a simple furnace structure, easy operation, high hot metal temperature, less silicon and manganese loss, less and less carbon and sulfur, As soon as they appeared, they showed great vitality and developed rapidly in China with a new scene of thriving. However, because pulverized iron furnace is a new thing, its mechanism and characteristics have not all been recognized and mastered. In general, trial production, often encounter the accumulation of powder, slag spray, hot metal temperature is not high, which is the main hot metal temperature is unstable, fluctuated, resulting in operational stress, and even forced to shut down. At the beginning of trial production of our factory, the hot metal temperature is also unstable, sometimes as low as 1370 ℃, sometimes high