Influence of coal sort on the direct reduction of high-iron-content red mud

Abstract

The technology of coal-based direct reduction of high-iron-content red mud is studied. The factors affecting this kind of direct reduction mainly are: coal sort, carbon amount, time, temperature and etc. has been investigated. It has been shown that an ideal coal sort must have the following qualities: high reactivity, large ratio of (F_c +V_m)/A and (SiO₂ +T_Fe)/(Al₂O₃ + Others) and the ability of forming a moderate porosity.

References

[1] WeissbergerS, ZimmelsY, LinI J. Mechanism of growth of metallic phase in direct reduction of iron bearing oolites. Metallurgical Transaction B, 1986, 17B: 439-439

[2] QinMinshengTo smelt iron with the aid of non-blast-furnace method, 1988, Beijing, the Press of Metallurgical Industry: 96-102(in Chinese)

[3] LiuYongkang. Study on coal-base direct reduction of high-iron-content red mud. Sintering and Pelletizing, 1995, 20(2): 5-5(in Chinese)