1. Influence on the orientation of the softening zone.The melting temperature of refractory slag is high at the beginning and the range from melting to melting is small, so the softening zone in the blast furnace is low and the softening layer is thin, which is conducive to the smooth running of the blast furnace.When the slag in the furnace temperature is insufficient, the viscosity may increase, affecting the air permeability of the alloy tee, which is smooth.In the blast furnace, the soft melting zone is high, the soft melting layer is thick, and the air permeability of the material column is poor.On the other hand, easy furnace slag activity is good, is conducive to the blast furnace.

2. Influence on the temperature of blast furnace hearth.Refractory slag absorbs more heat before melting and carries more heat when entering the hearth, which is conducive to raising the temperature of the hearth.On the contrary, fusible slag to improve the furnace temperature unlucky.Different furnace temperatures should be controlled when exercising different kinds of iron.

3. Affect the heat consumption and heat loss in high envy.Refractory slag to consume more heat, flow out of the furnace slag with more heat, heat loss increase, increase the coke ratio.Conversely, easy furnace slag is conducive to coke ratio reduction.
 

4. Influence on the life of alloy tee.When the melting temperature of slag is higher than the furnace wall temperature somewhere in the blast furnace, the slag at the furnace wall is easy to condense and form slag skin, which plays a maintenance effect on the furnace lining.The melting temperature of easy furnace slag is low, so the furnace wall here can not constitute the slag skin of the maintenance furnace lining, on the contrary, because its activity is too large to wash the furnace lining.