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一、冲天炉的简单结构和各部分的作用。现代冲天炉的结构如图所示。它主要由下列几部分组成。 1.炉身,自炉底到加料口为炉身部分。外壳用钢板卷焊而成,内部通常用耐火粘土砖砌筑,然后再打上一层耐火散料(石英砂、耐火粘土等)。炉身的下部有一个钢板焊成的风带,并开设一排或多排风口通向炉内,风口大小按风口总面积占炉膛截面积的2～10％不等。面积最大的一排风口,称主风口。其它各排为辅助风口,主风口的面积一般占全部风口面积的50～80％。风口各排间的距离称为排距。
First, the simple structure of the cupola and the role of each part. The structure of modern cupola as shown. It mainly consists of the following parts. 1. The furnace body, from the bottom of the furnace to the feeding port for the shaft part. The shell is made of steel with a coil and the inside is usually masonry with refractory clay brick and then a layer of refractory bulk material (quartz sand, refractory clay, etc.). The lower part of the furnace body has a steel belt welded into the wind band, and opens one or more rows of vents leading to the furnace. The size of the tuyere accounts for 2 to 10% of the cross-sectional area of the furnace. A row of the largest outlet, said the main tuyere. Other rows of auxiliary tuyere, the main tuyere area generally accounts for all tuyere area 50 ~ 80%. The distance between the rows of vents is called the row spacing.