Functionalisation of MgO-C refractories based on recycled raw materails and their impact on steel cleanless

在本转移项目中，将研究以再生镁碳为原料的镁碳耐火材料的应用。使用回收的MgO- c原料具有经济和生态效益，特别是通过避免在电弧炉中制造昂贵的MgO材料。此外，由于钢/渣系统在高温下已经发生了反应，因此回收材料的反应性将降低。因此，预计钢中夹杂物的含量会降低。该项目的重点是研究不同镁碳耐火材料与新鲜材料和回收材料在钢中的夹杂物。另一个任务是提高热冲击性能，特别是通过使用纳米级和半导体材料的添加。此外，还将研究与再生原料的杂质和粘结剂以及镁碳耐火材料的碳的相互作用，特别是通过钢熔体中夹杂物的数量。如果根据热冲击性能添加的添加剂产生积极影响，那么未来基于回收原料的MgO-C耐火材料中可以使用更少的“新鲜”粘合剂和更少的碳。

In this transfer project the application of MgO-C refractories based on recycled MgO-C raw materials will be investigated. The use of recycled MgO-C raw materials offers economial as well as ecological benefits especially by avoiding the expensive fabrication of MgO materials in an arc furncace. Further, the recycled material will be less reactive due to the fact that reactions have already taken place in the steel/slag-system at elevated temperatures. As a result, a lower amount of inclusions in steel is expected.The focus of the project is dealing with the investigation of inclusions in the steel based on different MgO-C refractories with fresh and recycled materials. Another task is the improvement of the thermal shock performance and especially by using nanoscalic and semiconducting material additions. Also the interactions with the impurities of the recycled raw material and the binder as well as the carbon of the MgO-C refractories will be investigated especially in means of the population of inclusions in the steel melt. In case of a positive impact of the additions according to the thermal shock performance less „fresh“ binder as well less carbon could be used in the future in MgO-C refractories based on recycled raw materials.