The melting behavior of single manganese ore pellet containing carbon in converter Quarternary slag (51 CaO-16SiO

2

-10MgO-23FeO) was investigated by experiments and mathematical model. The results showed that the sol¬id product layer was generated in the reduction process of manganese ore pellet containing carbon

and the rate of reduction can be accelerated by reduce the thickness and existing period of the solid product layer. Then the numerical model of melting process was established based on one-dimensional unsteady heat conduction differential equation

and the result of calculation was coinciding with the experimental data

thus illuminated that the model is effective. Simulated calculation to different conditions and the results showed that

reduction time of pellet can be shorten by about 35% to assume that the solid product layer not exist

in reduction process when the temperature of the slag was 1 600 X.. Preheated pellet

reduce the pellet diameter and lower melting point of reduction product can reduce exist time of solid product layer

and improve the pellet reduction rate.