**2. Sintering**

Sintering is an important agglomeration process that is a prerequisite for downstream processing. Liu et al. [2] studied the combustion kinetics during sintering at a partial replacement of coke powder by anthracite and found improvements in the combustion rate. Two combustion models, the volumetric and random pore models, were compared and the latter was demonstrated to yield better agreement with the measurements.

Wang et al. [3] studied a partial replacement of coke with biomass in sintering. The results indicated a higher combustion rate using charcoal due to a higher surface area, in spite of a lower fixed carbon content. It may therefore be viable to partially replace coke by charcoal in the sintering process.

Cheng et al. [4] investigated the removal of arsenic from iron ore through roasting in air and nitrogen. They reported higher removal ratios using a reducing atmosphere.
