一、引言近年来,为适应轧钢加热炉提高产量,延长使用寿命,国内外已逐渐采用耐火可塑料现场捣打施工。但由于现场捣打施工存在施工场地狭、周期长,需要较熟练的施工队伍等缺点,在国内轧钢加热炉上推广耐火可塑料,带来一定困难。试制了轧钢加热炉用耐火可塑料大型予制块,并在天津一轧厂经过两年多的试用、取得了明显的经济效果。二、耐火可塑料大型予制块的性能 I. Introduction In recent years, in order to meet the rolling furnace to increase output and prolong the service life, domestic and foreign markets have gradually adopted the construction of fire-resistant plastic ramming. However, there are shortcomings such as narrow construction site, long period and more skilled construction teams in the construction of on-site ramming construction. Therefore, it is difficult to promote fire-resistant plastic on the domestic rolling furnace. Trial of the rolling furnace with refractory plastic large pre-block, and a rolling mill in Tianjin after more than two years of trial, and achieved significant economic results. Second, fire-resistant plastic to large block performance