| 摘要 |
<p>A pressure lock for feeding particulate iron ore to a moving bed, gaseous reduction sponge iron reactor and removing sponge iron therefrom comprising a pressure hopper with valve assemblies at the inlet and outlet thereof. Each valve assembly comprises a pair of valves, one of which performs a flow control function and the other of which performs a pressure sealing function. The construction is such that contact between the flowing material and the sealing surfaces of the sealing valve is avoided, thereby eliminating abrasion and erosion of these surfaces and prolonging the effective life of the pressure lock.</p> |
