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近些年来,我国各地兴建起一批电炉钢厂,废钢不足和废钢质量下降已成为发展我国电炉生产和冶炼优质钢的限制环节.海绵铁是电炉冶炼优质钢的理想炉料.因此积极发展我国海绵铁生产,已成为一项十分迫切的任务.为此,1987年冶金部派出可行性调查组.调查组认真调查了福州40m回转窑设备现状,分析了历次试验工艺和设备上存在的问题以及国外回转窑海绵铁的发展趋势,提出了利用和改造原40m回转窑装置继续进行海绵铁工业试验的可行性建议,并具体地研究和提出了改用二步法海绵铁生产工艺方案和设备改造、检修计划.1988年福州40m回转窑海绵铁工业试验被列为国家“七五”
In recent years, a number of electric furnace steel mills have been built around our country, and the shortage of scrap steel and the decline of scrap quality have become the limiting links in the development of electric furnace production and smelting of high quality steel in China. Sponge iron is the ideal charging material for smelting high quality steel by electric furnace. Therefore, Iron production has become a very urgent task.To this end, the Metallurgical Department sent a feasibility study team in 1987. Survey team investigated the status quo Fuzhou 40m rotary kiln equipment, analysis of the previous test process and equipment problems and foreign The development trend of sponge iron in rotary kiln was put forward. The feasibility suggestion of using spontaneous iron in industrial 40m rotary kiln plant was retrofitted and reconstructed. The process and equipment reform of sponge iron using two-step method were specially researched and put forward. Overhaul plan 1988 Fuzhou 40m rotary kiln sponge iron industry test was listed as the national “seven five”