|
GB9419076D0
|
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An improved method for producing alpha calcium sulphate hemi-hydrate
|
|
CA2072714A1
|
|
Hydrometallurgical production of zinc oxide from roasted zinc concentrates
|
|
AU7781791A
|
|
Process to produce hydrogen and/or hemihydrate calcium sulphate from calcium sulphite
|
|
US4937056A
|
|
Process for obtaining high purity magnesium compounds from magnesium containing materials
|
|
GB8711287D0
|
|
Treating zinc oxide bearing materials
|
|
GB8619284D0
|
|
Hydrometallurgical production of zinc oxide
|
|
EP0195650A2
|
|
Recovery of zinc from zinc-bearing sulphidic ores and concentrates by controlled oxidation roasting
|
|
CA1328353C
|
|
Recovery of zinc from zinc bearing sulphidic ores and concentrates by controlled oxidation roasting
|
|
GB8515615D0
|
|
Recovery of zinc from sulphidic ores
|
|
GB8507302D0
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Roasting of zinc
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