| 摘要 |
<p>A treating method that, when recycling a steelmaking waste containing iron oxides, is capable of easily collecting zinc from a dust containing much volatile substance, such as chlorine, thus making it possible to recycle even a waste that has heretofore been considered to have no choice but to be discarded; and a movable hearth furnace therefor. A steelmaking waste charging device and a carbonaceous material charging device are separately installed in a movable hearth furnace, and a steelmaking waste and carbonaceous material are charged into the furnace, in which they are mixed, the mixture being reduced. It is preferable that the movable hearth furnace be provided with a first exhaust port between the steelmaking waste charging device and the carbonaceous material charging device so as to exhaust the volatile gas generated from the steelmaking waste, and that a second exhaust port be provided between the carbonaceous material charging device and the exhaust device so as to exhaust the gas generated from the mixture of steelmaking waste and carbonaceous material. Further, it is preferable that a mixer be installed behind the carbonaceous material charging device.</p> |
