Classifying – separating – and assorting solids – Treatment subsequent
Reexamination Certificate
2005-10-11
2005-10-11
Bos, Steven (Department: 1754)
Classifying, separating, and assorting solids
Treatment subsequent
C209S012100, C423S150600, C423S150100, C423S150300, C423S113000, C423S025000, C423S026000, C423S089000, C423S062000, C075S711000, C075S722000, C075S743000
Reexamination Certificate
active
06953120
ABSTRACT:
A method of recovering metal and/or oxide thereof from a slurry is described. The method involves magnetically separating at least a portion of any magnetic impurities from the slurry and then leaching or dissolving at least a portion of any remaining magnetic impurities in a slurry. At least one chelating agent can then be added to the slurry and the solids can be recovered from the slurry by various separation techniques. The methods of the present invention are particularly useful in the recovery of tantalum and/or oxide thereof especially tantalum and/or oxide thereof having a very fine size.
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Deveau Claude
Young Stephen R.
Bos Steven
Cabot Corporation
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