众所周知，高炉大量喷吹煤粉在操作成本方面具有极大的优点。一般说来，喷煤枪从直吹管侧面插入，喷煤枪与直吹管中心线以一定角度相交，煤粉从喷煤枪喷出后，冲击风口内壁面，使风口磨损，并且在风口内壁粘结部分煤粉，影响煤粉燃烧。为了解决这些问题，曾提出了各种措施，例 As we all know, a large number of blast furnace pulverized coal injection in the operational costs have great advantages. In general, the jet lance is inserted from the side of the straight blow pipe, the jet lance intersects the straight blow pipe center line at an angle, pulverized coal is sprayed from the lance and impacts the inner wall of the tuyere to wear the tuyere and stick to the inner wall of the tuyere Results part of the coal, affecting coal combustion. In order to solve these problems, various measures have been put forward, for example