Optimization of Bottom Ramming Material of MgO-CaO-Fe_2O_3 System for Electric Arc Furnace;

Experiment on Properties of Conductive Ramming Mixes for DC-EAF Bottom;

Laboratory Steelmaking Test of Conductive Brick for DC Arc Furnace Bottom;

The reasons of CaSi furnace bottom rising are analysed,the operation procedure to prolong smelting CaSi period in 1MVA electric furnace and the remarkable results achieved are expounded.

On the basis of analysis to the operation of first generation of comprehensive furnace bottom made with loam brick and carbon brick in No.

This isothermal line can be regarded as the final decision line to termine the corrosion inside the blast furnace bottom.

The hearth and hearth bottom life of blast furnace is one of the key factors affecting blast furnace life.

Analysis of “heat transfer method” hearth and “heat isolation method” ceramic cup synthetic hearth bottom;

According to the theory of heat transfer,based on the calculated temperature distribution in hearth bottom,it is clear that all the brick layers in hearth bottom can not be considered as a whole one for different structures result in different temperature distribution though total heat resistance is the same.

The mathematical model of heat transfer at hearth bottom was established.

The location and shape of hearth and bottom erosion line of blast furnace can be calculated by a two-dimensional model set up with the boundary element method,and the erosion station of the furnace lining is known in time.

According to condition of the existing thermal electric couples in hearth and bottom of 2 500 m~3 BF at Ma'anshan Iron & Steel Co Ltd,the hearth lining erosion online monitoring model was developed with two-point method.