| 摘要 |
Iron-containing slag in flowable state is poured into a casting bed to form a layer. Upright tubular conduits are embedded in the layer during pouring, each having an upper section and a lower section telescoped from below over the bottom portion of the upper section. The upper sections have upper open ends outside the layer and explosive capsules are inserted through these into the lower sections and detonated. This ruptures the lower sections and forms in the slag layer cavities surrounding the lower sections. Cooling water is then introduced into the upper sections to flow into the layer via the lower sections and the cavities.
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