The carbon-proportioning pellets are made from Zn-bearing EAF dust mixed with appropriate anthracite through roasting process. The influences of roasting temperature/time and proportioned quantity of coal on the metallurgical characteristics of the pellets were investigated at 1150-1300°C. The results show that the dezincification and metallization rate go up with the increase of roasting temperature/time and proportioned quantity of coal. As to the compressive strength, it also goes up with the increase of roasting temperature and time, but increases firstly then decreases with the increasing coal quantity. The best processing parameters are taking 15 min as roasting time at 1250°C with 13.04% taken as the value of the coal quantity in proportion to dust weight. Under such conditions, the dezincification rate, the metallization rate and the compressive strength of single pellet are 98.43%, 94.51 % and 800.6 N, respectively.
|Number of pages||4|
|Journal||Dongbei Daxue Xuebao (Ziran Kexue Ban)|
|Publication status||Published - 1 May 2004|
- Carbon-proportioning pellet
- Electric arc furnace (EAE) dust
- Metallurgical characteristic
- Resource utilization