tuyere

The slag forming process occurs in stage of primary slag, bosh slag, tuyere slag and tapped slag, among which the most important stage is the bosh slag.

高炉造渣过程经历初渣、炉腹渣、风口渣和终渣等几个阶段，其中对高炉强化最重要的阶段是炉腹渣。

This paper introduces the structure of the tuyere puncher control system based on the s7-300 PLC and its software design. Furthermore, the difficulty of the PLC software design is discussed. Finally the concrete solution is provided.

本文以S7-300PLC为核心的捅风眼机为对象，给出了其控制系统的构成及软件设计，并对PLC的软件设计中的难点进行了研究和探讨，在此基础上给出了具体的解决方法。

The application of S7-300 PLC in control of smelting furnace tuyere puncher

S7-300PLC在冶炼炉捅风眼机控制中的应用