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炼铁厂一号高炉在革新双砂口的基础上,又进一步改成裤衩式双砂口。上述砂口,都是由两个并列固定的砂口组成,但前者老式双砂口多了一段辅助主沟,所以每倒换一次砂口就要拆除几个沟坝,同时还要垒起几个沟坝,工作量仍然很大,而裤衩式双砂口去掉了辅助主沟,因此倒换砂口时,只垒一个沟坝,拆一个沟坝就行了。裤衩式双砂口和老式双砂口比较,其优点是:节省泥料;减少了劳动量;减少了辅助主沟;少用沟坝;减少了占地面积,从而相对地减少了事故点,增加了炉台的活动场地。
Ironworks blast furnace in the renovation of double sand mouth on the basis of further into the pants double sand mouth. The above-mentioned sand mouth is composed of two parallel fixed sand mouths, but the former double-sand mouth has some auxiliary main grooves, so every time you switch sand mouth, it is necessary to remove a few ditch dams, Ditch dams, the workload is still large, while the pants-type double sand mouth to remove the auxiliary main groove, so when you switch sand mouth, only base a ditch dam, demolition of a ditch dam on the line. Pants double sand mouth and the old double sand mouth comparison, the advantages are: save mud; reduce the amount of labor; reduce the auxiliary main groove; ditch less dams; reduce the footprint, thereby reducing the accident point, Increased activity stove site.