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Secondly, the thermodynamic coupling characteristics of large carbon bricks wet hearth structure and dry hearth structure are analyzed, and the respective characteristics of the two brick-lined hearth masonry structures are obtained too;

Finally, the calculation method of the remaining thickness of the carbon brick with no temperature measurement at the center of the blast furnace is improved. On the basis of this, the advantages and disadvantages of the heat transfer characteristics of the upper-mounted water pipe cooling and the bottom-mounted water pipe cooling bottom structure are discussed. (3) The safety and stability of the cooling stave is the foundation for the long campaign operation of the blast furnace. Firstly, This paper analyzes the heat transfer characteristics of the copper cooling stave, and obtains the influence of each parameter change on its heat transfer characteristics distribution rule;

Secondly, the heat transfer model of the copper cooling stave structure of the profile tubes (oval, rectangle, double circle, triple circle and regular hexagon) that have appeared in recent years, the optimal selection of the cooling pipe ―4― type is made based on the heat transfer characteristics of the copper cooling stave;

Finally, based on the optimal tube type selection of copper cooling stave, in........