We stacked the crushed ore with wood to a roasting pile. After lighting the pile we added multiple new layers of wood and let it burn nearly two days. From the temperature in the center of the roasting pile we saw that the sulfur kept the roasting reaction going by itself. We were utterly surprised that we even had to stop the reaction due to upcoming holidays. Nobody of us thought we would be able to build the pile a way that the desulfurization kepp going on by itself for that long.
The strong smell of the sulfur permanently accompanied us during this time and getting even wors during the documentation when some parts in the center of the roasting pile came in contact with oxygen and started to react again.
The result were beautifully zoned roasted ore pieces with an unroasted core and a clear rim of reacted, reddish iron oxides.
