一、我厂两代锰铁高炉的三种炉型我厂七号高炉第一代于1966年5月24日开炉,其内型尺寸如图一所示。1971年9月30日大修投产,炉容由原84.5米~3扩大为100米~3,内型尺寸作了较大变动。(图2)。1976年中修,炉喉直径扩大,容积为106.5米~3(图3)。二、炉型尺寸改变的目的84.5米~3高炉,比较细长,炉喉间隙大(520m/m),边缘煤气发展,一直是边缘一道气流操作,炉缸极易堆积。年大修,扩大了容积,内型尺寸作了较大变动,炉型相对矮胖,主要扩大了炉缸直径,以利于加大风量。为了有利于抑制边缘气流的发展,较大幅度的缩小了炉墙间隙(由原520减小至350m/m),炉喉高度有所降 First, I plant two generations of ferromanganese blast furnace of the three furnace I plant on the 7th blast furnace first generation on May 24, 1966 opened, the inner dimensions shown in Figure one. September 30, 1971 overhaul production, furnace capacity from the original 84.5 m ~ 3 expanded to 100 m ~ 3, the internal dimensions made a significant change. (figure 2). In mid-1976 repair, throat diameter expanded, the volume of 106.5 m ~ 3 (Figure 3). Second, the purpose of changing furnace size 84.5 m ~ 3 blast furnace, relatively slender, large throat gap (520m / m), the edge of gas development, has been the edge of an airflow operation, easy accumulation of hearth. Years of overhaul, expanding the volume, the larger the size of the internal changes, the relatively short furnace stove, the main expansion of the hearth diameter, in order to facilitate the increase of air flow. In order to help suppress the development of the edge of the air flow, a substantial reduction of the furnace wall gap (reduced from the original 520 to 350m / m), the throat height has dropped