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CA118795A
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Electric rotary furnace
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GB190817281A
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Improvements in and relating to Electric Furnaces.
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CA114749A
|
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Reduction of zinc ores
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GB190813492A
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Improvements relating to the Extraction of Zinc from Ores by the Precipitation Process
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CA111045A
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Metallurgical treatment of sulphurous ores
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CA111046A
|
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Metallurgical treatment of oxidized zinc ores
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GB190716834A
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Improved Method of Treating Ores by the Precipitation Process by Means of a Superheated Liquid Reacting Metal.
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GB190712591A
|
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Improvements in the Metallurgical Treatment of Sulphurous Ores by the Precipitation Process.
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GB190712592A
|
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Improvements in the Metallurgical Method of Treating Oxidized Zinc Ores by the Precipitation Process.
|
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CA105339A
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Treatment of zinc and lead sulphide ores
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US875578A
|
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Process of treating zinc and lead sulfid ores.
|
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GB190610303A
|
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Improved Process of Treating Zinc and Lead-sulphide Ores.
|
|
CA86093A
|
|
Process of extracting metals
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US807271A
|
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Process of extracting metals from their sulfids.
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GB190324825A
|
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A Process for Extracting from their Sulphides, Zinc and Lead, and generally all Metals whose Affinity for Sulphur is Inferior to that of Copper.
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