高炉喷补料在不同气相条件下的抗CO侵蚀性能研究

对同一高炉喷补料在纯CO和95%CO 5%H2混合气相中进行了抗CO侵蚀对比试验,并初步分析了侵蚀机理。结果表明,添加5%的氢气促进了CO对喷补料的侵蚀;在两种气相条件下,经X射线衍射分析因侵蚀反应生成的沉积碳的结构是相同的,而试样的气孔率随侵蚀时间的延长变化微弱,耐压强度显著降低。

Research on Resistance of Gunning Material to Carbon Monoxide under Different Gas Composition

The resistance of gunning material for blast furnace to carbon monoxide was studied and compared under the pure CO and the mixed gas that is composed of 95%CO and 5% H_2.The reaction mechanism of the carbon disposition in refractories was analyzed. The results show that the addition of 5% H_2 to pure CO accelerates the erosion of CO to the gunning material. The structural of the carbon deposition which was analyzed by X -ray diffraction with the pure CO is the same as that with the 95%CO 5%H_2 , and the porosity of the gunning material changed feeblenessly and the crushing strength decreased rapidly along the testing time under that two gas composition.