|
US1144054A
|
|
Reduction-furnace.
|
|
GB191324847A
|
|
Improvements in or relating to the Extraction of Metal.
|
|
AT70195B
|
|
Furnace for processing a mixture of reducing agents with substances which contain reducible metal compounds.
|
|
CA153096A
|
|
Ore furnace
|
|
US1144053A
|
|
Furnace for working up ores.
|
|
GB191222715A
|
|
Improvements in or relating to the Extraction of Metals.
|
|
CA137080A
|
|
Desulphuration of sulphate of zinc
|
|
US948740A
|
|
Process for obtaining zinc from zinciferous materials.
|
|
CA120503A
|
|
Preparation of zinc oxide for reduction
|
|
US947399A
|
|
Process for the preparation of zinc oxid for reduction.
|
|
GB190905293A
|
|
Process for the Preparation of Zinc Oxide for Reduction.
|
|
CA109816A
|
|
Method of obtaining oxide fumes
|
|
US877114A
|
|
Method of obtaining oxid fumes from ores and furnace products.
|
|
GB190628776A
|
|
Improvements in and relating to Explosion Engines
|
|
GB189626506A
|
|
Method of and Apparatus for Producing Fresh Water from Water Containing Salts.
|
|
CA56559A
|
|
Ore pulverizer
|
|
CA207286A
|
|
Reducing agent
|
