1, The oxidation and corrosion resistance of silicon nitride shaft and rotors are greatly enhanced compared with graphite rotors. And the degassing effect is stable during service lift time.

2, Designed with hign speed rotating, bubbles are broken furthest and degassing capacity will be increased.

3, With excellent corrosion resistance, Smooth surface, no dross and no slag, no pollution to molten metals.

4, Effectively reduce costs, improve reliability of equipments and save maintenance cost.