Mechanism and Control Study on Metallized Pellet Bonding with High Temperature

The problem of metallized pellet bonding at high temperature, which appeared in the production of Pangang pilot plant for resources comprehensive utilization, is analyzed. It shows that it is the main cause leading to the metallized pellet bonding of low melting silicate phase bonding, and it is caused by metallized pellet re-oxidation. Experiments are carried out to investigate the influence of different anti-oxidation ways on pellet metallization rate, and to verify it with the method of nitrogen protection. Results show that metallized pellet bonding could be avoided effectively by nitrogen protection, which could ensure smooth pilot production of metallized pellet.