Covering Agent

Covering agent adopts the composite carbon, free carbon technology to improve itself refractoriness, which makes this products with longer insulation time, small capacity, good spread porosity, and small termal conductivity, and the net rate is even more than 90%. Also, dust float rate is small, and this material don’t bond to the furnace lining, especially for those high alkaline magnesia based, calcium magnesia based covering agent. They have good effect in absorbing impurity for the alkaline magnesia and magnesia calcium type furnace lining in the processs of casting super low carbon clean steel, thus to improve the slag’s stability and guarantee the steel quality.

Covering Agent Advantages

1.A dense protective layer can be formed to reduce the involvement of gas.
2.Reduce the metal loss caused by the liquid surface being oxidized.
3.It has the advantages of a moderate melting point, good fluidity and good coverage.
4.The dosage is small, the cost is low, and the metal content in the formed slag is very low.
5.Insulation covering agent is made of low thermal conductivity material composition, such as: expanded perlite, expanded graphite.
6.In addition to the low thermal conductivity material, by adding a certain percentage of the heating material, and under the heat of the metal liquid, the oxidant provides oxygen to oxidize the reducing agent and prolong the solidification time of the metal liquid in the riser.
7.In the case of different insulation covering agent, the mouth shrinks into a “dish-shaped flat or hemispherical bottom, which is shaped like a U-shaped throat.