Process for the containment of tin-free lead bottles in a flame furnace
DE366906C
Process for the utilization of metal, lead, zinc, tin and copper-containing or enamelled iron scrap
GB178059A
Improvements in or relating to rabble stones for mechanical roasting and calcining furnaces
DE355167C
Process for reducing energy losses in compressed air lines
DE350574C
Process for the production of chemically pure hydrochloric acid
GB160455A
Method of extracting zinc from lead-slags, zinc-retort residues, poor zinc-ores or the like
DE400379C
Dezincification or detinning of scrap iron
GB171962A
Process for producing zinc dust having a high percentage of metallic zinc
GB163023A
Improvements in rabble stones for roasting furnaces
GB152667A
Improvements in or relating to mechanical roasting and calcining furnaces
DE345562C
Process for the production of chemically pure hydrochloric acid
DE337262C
Kraehlstein for mechanical roasting and calcining furnaces
DE437055C
Process for dezincification of lead slag, muffle residues, poor zinc ores, zinc-containing gravel deposits, etc.
DE334810C
Process for separating copper from other metals contained in copper stones and dishes, such as lead, silver, tin, nickel, antimony, etc.
DE325970C
Kraehlsteine for Roestöefen
DE326440C
Mechanical roast oven
GB191027467A
Improvements in or relating to Retorts for the Distillation of Zinc and like Volatile Metals.
GB190624096A
Process for the Direct Production of Metallic Zinc from Zinc Sulphide, and the Subsequent Utilization of the Sulphur and Regaining of the Flux Desulphurating the Zinc Sulphide.
DE354893C
Kraehlstein for mechanical roasting and calcining furnaces
DE348596C
Process for processing tin-containing metal, in particular lead,
