| 摘要 |
<p>1505568 Heat treatment apparatus METALLGESELLSCHAFT AG 5 Dec 1975 [13 Jan 1975] 50097/75 Heading F4B Apparatus for heat treating material comprises pallets 46 that travel on tracks 48 through a drying zone, a firing zone and a cooling zone. In the firing zone one or more vertically extending combustion chambers 50 (right-side, Fig. 2) are supplied through ducts 51 with hot recuperated air from the cooling zone of the apparatus. Pulverized coal from the burner 52 is burnt in the chamber 50 and heated gases are directed to the firing chamber 43 via an outlet 53. Slag from the chamber 50 runs down the slope 54 through a tap line 55 to a slag quench tank. An auxiliary burner 56 may be provided to prevent plugging of the tap line.</p> |
