Refractories with Improved Thermal Shock Performance Serving Low Carbon Economy

Nanoengineered carbon bonded refractories as well as fine grained carbon free refractories with improved thermal shock performance are presented in terms of this contribution.

具有优良抗热震性的可服务于低碳经济的耐火材料

为了减少耐火材料对钢水的增碳,将纳米级添加物尖晶石、板状刚玉和碳纳米管加入到Al2O3-C耐火材料中以降低碳含量,研制了用于浇钢水口及钢液过滤器的纳米优化碳结合耐火材料,还将微粉级TiO2和ZrO2添加到无碳Al2O3质陶瓷研制了无碳AZT耐火材料。结果表明:纳米级添加物的复合加入可以改善碳结合耐火材料的性能,这是因为材料中原位生成了相互交织的新物相;通过添加ZrO2和TiO2,可以制备出低气孔率、细晶粒且具有优良抗热震性的无碳Al2O3质耐火材料。