我厂原使用的为直筒形活动炉缸无前炉酸性冷风冲天炉,各项技术经济指标比较落后。通过毛主席著作的学习,经过伟大的四清运动及史无前例的无产阶级文化大革命运动,提高了无产阶级觉悟,树雄心、立大志,决心改变这种落后面貌。我们按照毛主席的教导:任何事物都是一分为二的。任何事物都包含着矛盾。任何事物都是矛盾的普遍性及特殊性(即共性与个性)的相互联结。因此人类的认识也是两个过程的相互联结。全国各地冲天炉的类型很多,我们感到不同的冲天炉,既有它自己的特殊规律,也有它们共同的一般规律,即有个性也有共性。我们以这些共同规律的认 I used to plant the original straight-shaped movable hearth furnace without front acid cool wind cupola, the technical and economic indicators are relatively backward. Through the study of Chairman Mao’s writings, after the great Four-Qing Movement and the unprecedented proletarian cultural revolution movement, the proletarian consciousness, the ambition of the tree, its ambition and its determination to change this backwardness have been raised. We follow Chairman Mao’s teachings that everything is divided into two parts. Anything contains contradictions. Everything is universal and special contradictions (ie, common and individual) interlinked. Therefore, human understanding is also the interconnection of the two processes. There are many types of cupola around the country. We feel different cupola, both of its own special laws, but also have their common general law, that is, there are personality and commonalities. We recognize these common laws