Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ivb metal
Patent
1975-11-04
1978-01-10
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ivb metal
75 1R, 75 1T, 75 2, 423 20, 423 69, 423 81, 423 82, 423151, C01G 2500, C01G 2700
Patent
active
040679535
ABSTRACT:
Minerals, for example, zirconium minerals, are subjected to a chemical process of comminution, in particular with the aid of strong acids. These acids dissolve the carbonatic and silicious cements which hold together the crystalline forms of different mineral species from one another, e.g., magnetic and non-magnetic species to render them amenable to further separation in a subsequent ore dressing stage, e.g., by high intensity magnetic separation. This process is operative as these cements dissolve in acid more readily than most of the other compounds of the ores. This separation was found to take place more effectively than by the usual methods of mechanical grinding and without the disadvantage of an unfavorable particle size distribution which results from grinding. It was found that the same process conditions also resulted in a particularly favorable removal of naturally occurring radioactive contaminants from the minerals, in particuar thorium and uranium. The process is particularly suitable for purifying the zirconium mineral baddeleyite, which is useful for ceramic and chemical industries.
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Gaudin, deceased Antoine M.
Gaudin, executrix by Anna B.
Goodey James Golden
Roux Etienne
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