３号罐式煅烧炉中６层火道改造为８层火道。根据测试的硅砖在各温度区间的线膨胀率制定烘炉升温曲线。烘炉过程，严格按升温曲线控制升温速度，同时及时调整负压和弹簧压力。烘炉实际升温曲线及炉体膨胀量与理论计算基本相符。转入生产后，排料正常，煅后焦真比重均在２０ｇ／ｃｍ３以上。 No.3 canister calciner in the 6 layer firefighting to 8 layers of fire. According to the test of silica bricks in the temperature range of the coefficient of linear expansion to develop oven temperature curve. Ovens process, in strict accordance with the heating curve to control the heating rate, and timely adjustment of negative pressure and spring pressure. The actual heating curve of oven and the expansion of the furnace basically accord with the theoretical calculation. Into the production, the discharge is normal, calcined after the true proportion of 2  0g / cm3 above.