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首页> 外文会议>TMS annual meeting exhibition;International symposium on high-temperature metallurgical processing >Refractory Challenges in Lead Recycling Furnaces
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Refractory Challenges in Lead Recycling Furnaces

机译：铅回收炉中的耐火材料挑战

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The refractory linings in lead furnaces are exposed to several stresses rather complex in their interaction. In the present study the magnesia-chromite brick out of a lead recycling furnace suffered from a high chemical attack by the process slag. The high CaO, BaO and sulfur bearing silicate slag, as well as a high Na_2O supply from soda resulted both in a deep-reaching infiltration of the brick microstructure and a severe corrosion of the brick components. Both the sintered magnesia and chromite were attacked chemically. The FactSage calculations showed the formation of high amounts of liquid phase in the infiltrated microstructure. Further phenomena affecting the refractory performance such as iron oxide attack, redox effects, and boron attack are also discussed in the paper. The obtained information and insights serve as a basis for improving refractory materials (i.e., choice of refractories for individual process and new developments) and consequently furnace operations.
机译：铅熔炉中的耐火炉衬在相互作用中会承受相当大的应力。在本研究中，从铅回收炉出来的氧化镁-铬铁矿砖受到工艺渣的高化学侵蚀。高含量的CaO，BaO和含硫的硅酸盐炉渣，以及来自苏打的大量Na_2O供应都导致砖的微观结构深入渗透和严重腐蚀了砖部件。烧结的氧化镁和铬铁矿都受到化学侵蚀。 FactSage计算显示，在渗透的微结构中形成了大量液相。本文还讨论了影响耐火性能的其他现象，例如氧化铁侵蚀，氧化还原效应和硼侵蚀。所获得的信息和见解可作为改进耐火材料（即为个别工艺和新开发项目选择耐火材料）并进而改善熔炉操作的基础。

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