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DE2936143A1
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Treating sludge esp. from blast furnace gas scrubbers - in rotary drum furnace to remove zinc and lead and produce partially reduced iron sinter
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LU80703A1
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Method for processing, in particular, sludges resulting from blast furnace gas cleaning
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DE2758118A1
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Treating sludge obtd. in cleaning blast furnace throat gas - for reclaiming reduced iron oxide(s) and valuable non-ferrous metals
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DE2756070A1
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Chilled mould for mfg. cast iron drill - esp. for drilling out the tap-hole of blast furnaces
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DE2531818A1
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Cleaning mandrel for nozzles in coke ovens - is of conical shape carrying axial steel wire cables
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DE2460952A1
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Grinder for seal strips - particularly for strips sealing coke oven doors
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DE1254096B
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Round basin for the biological treatment of raw sewage
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DE1275002B
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Method and device for the biological purification of waste water
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GB946827A
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Process and apparatus for the biological treatment of waste waters
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DE1130377B
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Process for the biological purification of waste water and round basins to carry out the process
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