我厂铸造车间工人同志发扬了艰苦创业的革命精神,将原有一座结构笨重、耗焦量大(焦铁比只有1:5～6)、铁水温度低(1320～1350℃)、铸件质量差、产品成本高的旧式冲天炉进行改装。经过“实践、认识、再实践、再认识”的多次反复,终于试制成功了一座结构简单、操作方便、焦耗低和造价低廉的多排小风口曲线炉膛热风化铁炉。 The workers in our foundry workshop carry forward the revolutionary spirit of arduous pioneering. The original structure was bulky, with a large power consumption (1: 5 ~ 6 for coke iron ratio), low hot metal temperature (1320 ~ 1350 ℃), poor casting quality , Product cost high old cupola conversion. After many times of “practice, cognition, re-practice and re-cognition”, it finally succeeded in trial production of a multi-row small air outlet furnace with a simple structure, easy operation, low coke consumption and low cost.