Samim Societa Azionaria Minero Metallurgica S.p.a.

Nuova Samim S.p.a.

Samim S.p.a.

Italo Vittadini

Renato Guerriero

Letizia Meregalli

Ilario Tangerini

Process for separating antimony from acidic solutions containing same

The invention relates to the separation of indium from acidic solutions containing it, by means of the formation of complex compounds with complexing substances supported on either planar or tubular membranes, of ploymeric character, and of the de-complexing of the same, followed by a re-extraction or stripping with acidic solutions, which may be either of the same type of, or different from the starting solutions.

Process for the separation of indium from anidic solutions containing it

The present invention relates to a composite material comprising a porous lead alloy containing from 0.7 to 1.0% silver or 0.1 to 1.0% calcium or 0.7 to 1.0% silver and 0.1 to 1.0% calcium and having its pores filled by a resin such as epoxy resin. The product has utility as a battery electrode and as a sound absorbing material.

Composite material

To solve pollution problems in electrolytic cells for the production of zinc by electrolyzing a solution of a zinc salt, shielding baffles are provided above the cell anodes, the gap between adjoining baffles being such as to provide a satisfactory tight seal while permitting the evacuation of noxious gases and mists through manifolds formed through the cell walls.

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Mestre, Italy

Italo Vittadini