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采用煤粉化铁对节约焦炭、降低成本、提高铁水质量有重要意义。但炉衬寿命低也是当前的一个问题。我们经过认真观察和仔细分析的实践,从烧损最严重的炉拱顶发现这种烧损是由于卧炉拱顶为平直型,而竖炉突然以90°垂直转变气流方向,使快速旋转的高热火焰在此形成旋流,猛烈冲刷着炉拱顶,因而形成严重烧损点。为改变这种情况,我们把卧炉平直炉拱顶改成大倾斜的拱顶炉型(如图)。再则把倾斜的炉拱顶一直延伸到竖炉近炉缸处,缩
The use of powdered iron to save coke, reduce costs and improve the quality of hot metal is of great significance. However, the low lining life is also a current issue. After careful and careful analysis, we found that the burning from the most burning furnace dome was due to the flat shape of the boiler hearth, while the vertical furnace suddenly turned the air flow vertically at 90 °, causing rapid rotation The hot flame in this formation of swirl, fierce erosion of the furnace vault, thus forming a serious burn point. In order to change this situation, we turn the furnace flat furnace vault into a large inclined dome furnace (pictured). Then tilt the furnace vault has been extended to the shaft near the furnace cylinder, shrinking