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EVALUATION OF SARDINIAN PLACERS AND BENEFICIATION POSSIBILITIES OF THEIR HEAVY MINERALS

Objectif



SAMPLING CAMPAIGNS ON COASTAL SANDS DEPOSITS AND SUBMARINE PLACERS IN THE SARDINIAN OFFDHORE AND MINERALURGICAL TREATMENT OF SAMPLE FOR RECOVERING USEFUL HEAVY MINERALS (CASSITERITE, ETC). INDIVIDUATION OF SANDS DEPOSITS CONTAINING USEFUL, HEAVY MINERALS, TECHNICAL ECONOMIC ANALYSES.

THE AIM OF THE RESEARCH IS TO ASCERTAIN WHETHER IT IS POSSIBLE TO EXTRACT, BY MINERAL PROCESSING, CONCENTRATES OF USEFUL HEAVY SPECIES )CASSITERITE, ZIRCON, TITANITE, MAGNETITE AND RARE EARTHS) FROM THE FINE AND VERY FINE-GRAINED METALLIFEROUS SANDY DEPOSITS. THE PROGRAMME OF RESEARCH WORK TO BE CONDUCTED IS SET OUT BELOW.

A. STUDY OF THE CHEMICAL, MINERALOGICAL, SEDIMENTARY, PHYSICAL AND PHYSICOCHEMICAL PROPERTIES OF THE SAMPLES.
THE SAMPLES COME FROM THE FOLLOWING AREAS:

1. THE CONTINENTAL SHELF BETWEEN TORRE DI CALA D 'AOSTIA AND CAPO SPERONE
2. THE CONTINENTAL SHELF BETWEEN C. CARBONARA AND C.S. LORENZO (EASTERN DARDINIA) AND THE ADJACENT INLAND AREAS.

B. STUDIES ON THE RECOVERY OF THE ABOVE MENTIONED USEFUL HEAVY SPECIES PRESENT IN THE FINE AND VERYFINE-GRAINED MATERIALS BY:

1. THE COLLECTION OF A REPRESENTATIVE SAMPLE OF THE METALLIFEROUS SANDS FROM BOTH OFF-SHORE AND THE INLAND PART OF EACH THREE AREAS MENTIONED.
2. PRODUCTIONG OF HEAVY PRECONCENTRATES CONTAINING FERRO-TITANIUM, CASSITERITE, ZIRCON AND THE RARE EARTHS, USING GRAVIMETRIC AND HYDRAULIC CLASSIFICATIOR
3. STUDY TO OBTAIN CASSITERITE AND ZIRCON CONCENTRATES EITHER FROM THE HEAVY PRECONCENTRATES, BY REMOVING THE MAGNETIC FERRO-TITANIUM FRACTION, FLOTSTION AND OTHER PROCESSES.
4. HYDROMETALLURGY STUDIES TO EXTRACT RARE EARTH CONCENTRATES DIRECTLY FROM THE MATERIALS THEMSELVES, OR FROM THE HEAVY PRECONCENTRATES MENTIONED IN POINT 2, OR FROM THE TAILINGS PRODUCED BY THE OPERATION DESCRIBED IN POINT 3;
5. EXAMINATION OF THE POSSIBILITIES FOR EXPLOITING THESE MATERIALS BY OTHER PROCESSES, SUCH AS FLOTATION IN OIL AND FLOCCULATION.

C. INTERPRETATION OF THE RESULTS OBTAINED DURING THE ENTIRE SERIES OF TESTS DESCRIBED ABOVE

A TECHNICL AND ECONOMIC ASSESSMENT OF THE PROCESSES DEVELOPED.

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Coordinateur

Consiglio Nazionale delle Ricerche
Contribution de l’UE
Aucune donnée
Adresse
Piazza d'Armi
09100 Cagliari
Italie

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