| 摘要 |
The invention concerns a process for the recovery of combustible gases in an electrometallurgy furnace comprising an external metal casing (1) and an internal refractory lining (2), in which at least one oxidized compound is reduced by means of carbon, the various components being introduced into the furnace in the form of a divided charge (6) (A) which moves progressively downwardly towards the reaction region (C), passing through a sintering region (B). The combustible gases produced in the reaction region are collected by suction, by means of a plurality of apertures (8) provided in the external metal casing (1) and the internal refractory lining (2) and disposed at a level corresponding to the lower portion of the divided charge (A) and before it passes into the sintering region (B). Suction of the gases collected by each aperture may be controlled in dependence on at least one of the following parameters: temperature, pressure and flow rate of the gases, and concentration of carbon monoxide, nitrogen or other component in the gases. The gases collected at each aperture (8) are passed to a central collector (12) and directed as desired towards a storage means for deferred use, or towards a means for immediate use. At least 60% of the energy introduced into the furnace may be recovered. |
