冶炼加稀土的钢种特别是平炉和转炉冶炼低碳钢时,经常发生水口结瘤、汤道堵塞等现象,成为稀土在钢中推广应用的“拦路虎”。过去对稀土钢结瘤问题国内作过大量研究工作,找到了一些规律,但未能根本解决结瘤问题。1976年有关单位在上钢三厂,对此问题作了大量研究工作,在电炉上冶炼二十七炉,目的在于研究影响结瘤的因素。并在转炉,平炉作了初步的验证,冶炼钢种为16Mn及D08,试验钢量达七百多吨。 Smelting plus rare earth steel, especially open hearth and converter smelting low carbon steel, often nodules nodules, soup Road blockage phenomenon, a rare earth in the steel to promote the use of “stumbling block.” In the past made a lot of research work on rare earth nodules in China, found some laws, but failed to solve the problem of nodules. The relevant unit in Shangang Iron and Steel Company in 1976, made a lot of research on this issue, smelting 27 furnaces on the electric furnace, the purpose is to study the factors that affect nodulation. And in the converter, open hearth made a preliminary verification, smelting steel for 16Mn and D08, test steel amounted to more than 700 tons.