窑门处出现欠火砖是众多砖厂普遍存在的问题.虽然许多厂家采取了码双层窑门,窑门用煤坯、或在窑门处放煤等方法,均没能达到理想的效果.1 产生欠火砖的原因首先是窑门处保温差,致使焙烧时砖坯升温慢,而且散热快,使窑门处砖坯未达到烧成温度;再者码法不当,或码坯过密、或火腿过低等,使窑门处 The appearance of underfire bricks at the kiln door is a common problem in many brick factories. Although many manufacturers have adopted code double kiln doors, kiln door coal, or coal at the kiln door, they have failed to achieve the desired results. .1 The reason for the lack of fire bricks is the poor thermal insulation at the kiln door, which causes the bricks to slowly heat up during roasting, and they dissipate heat quickly, making the kiln door bricks not reach the firing temperature; in addition, the yardage method is improper, or the code blank is too dense, Or ham is too low to make the kiln door