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一、概述武钢四号高炉是我国第一座采用炉缸支柱和炉腰托圈的炭砖水冷薄炉底大型高炉,于1970年9月30日建成投产,至1984年7月11日顺利停炉大修,历时5024天(13年9个多月)。其间经过1974年2月、1977年10月和1981年4月三次中修。一代炉龄产铁量为1293.5万吨,单位有效容积产铁量达到5141吨/米~3·代。四号高炉第一代内型剖面见图1。二、停炉前的准备工作停炉前夕,炉况基本顺行,要求停炉前一天(9日)炉温:〔Si〕0.95~1.05％;炉渣碱度0.90~0.95。炉料由烧结矿和海南矿组成,每批加锰矿800公斤。小休风期间(476分钟)
I. Overview WISCO No.4 blast furnace is the first large-scale blast furnace in China that uses the hearth support and the waist support ring of the furnace. It was put into operation on September 30, 1970, and smoothly stopped until July 11, 1984 Furnace overhaul, lasted 5024 days (13 years and 9 months). During the period in February 1974, October 1977 and April 1981 three times in the repair. A generation of furnace production of 12.935 million tons of iron, the effective volume of iron production units to 5141 tons / m ~ 3 generation. The fourth generation of the first generation of blast furnace inner profile shown in Figure 1. Second, the shutdown before the shutdown on the eve of the shutdown, the furnace basically the same day before the shutdown required (9) furnace temperature: [Si] 0.95 ~ 1.05%; basic slag 0.90 ~ 0.95. Burden consists of sinter and Hainan mine, plus 800 kg of each batch of manganese ore. During a small break (476 minutes)