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Study on SHS ceramic coating for BF tuyere
Author(s): 
Pages: 351-353,360
Year: Issue:  5
Journal: REFRACTORIES

Keyword:  燃烧合成高炉风口陶瓷涂层;
Abstract: 将CrO3粉与Al粉按1:2(物质的量比)配料,加入适量的稀释剂Al2O3粉、添加剂NaF粉和结合剂混匀后,压入高炉风口的型腔内,在空气中燃烧合成了风口的陶瓷涂层.利用XRD、SEM和EDS分析了该涂层材料的物相与显微结构,并结合该材料的性能指标分析了其用作风口涂层的可行性.结果表明:燃烧合成陶瓷涂层材料的主要物相是Cr2N、α-Al2O3和Cr,其耐火度>1800℃,常温耐压强度58.8 MPa,体积密度1.36 g·cm-3,显气孔率57%,600℃时的热导率0.796W·(m·K)-1.因此,该材料耐高温,耐磨损,抗渣铁侵蚀,用其作高炉风口的陶瓷涂层不但可以有效延长风口的寿命,而且还有很好的保温、节能效果.
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