Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Reexamination Certificate
2008-01-15
2008-01-15
Langel, Wayne A. (Department: 1754)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
Reexamination Certificate
active
10498837
ABSTRACT:
A method is provided for the removal of chromium from leach liquors produced during high pressure leaching of laterite ores in an autoclave, by addition to the autoclave of carbon in a quantity of about 0.5%-1% by weight with reference to the total dry feed.
REFERENCES:
patent: 3761566 (1973-09-01), Michal
patent: 4044096 (1977-08-01), Queneau et al.
patent: 6139602 (2000-10-01), Sharp et al.
patent: 2002/0006370 (2002-01-01), Arroyo et al.
patent: 798478 (1958-07-01), None
patent: 61006216 (1986-01-01), None
patent: WO 0162989 (2001-08-01), None
Han et al., Jan. 2000, Water Environmental Research, vol. 72, pp. 29-39, “Removal of Hexavalent Chromium from Groundwater by Granular Activated Carbon”.
Carlson, E. T. et al., “Pressure Leaching of Nickeliferous Laterites with Sulfuric Acid”, Extractive Metallurgy of Copper, Nickel, and Cobalt, 1960, pp. 363-397, Interscience Publishers, New York.
Duyvesteyn, W. P. C. et al., “An Omnivorous Process for Laterite Deposits”, International Laterite Symposium, pp. 553-570, AMAX Extractive Research & Development, Inc., Golden.
Georgiou, D. et al., “Sulphuric acid pressure leaching of a limonitic laterite: chemistry and kinetics”, Hydrometallurgy, 1998, pp. 23-46, vol. 49, Elsevier Science B.V.
Carlson, E. T. et al., “Pressure Leaching of Nickeliferous Laterites with Sulfuric Acid”, Extractive Metallurgy of Copper, Nickel, and Cobalt, 1960, pp. 363-397, Interscience Publishers, New York.
Duyvesteyn, W. P. C. et al., “An Omnivorous Process for Laterite Deposits”, International Laterite Symposium, pp. 553-570, AMAX Extractive Research & Development, Inc., Golden, no date.
Georgiou, D. et al., “Sulphuric acid pressure leaching of a limonitic laterite: chemistry and kinetics”, Hydrometallurgy, 1998, pp. 23-46, vol. 49, Elsevier Science B.V.
Boissoneault Marc
Buarzaiga Mohamed
Hoffman Maxine
Marshall Debbie
Potter Carlton A.
Bonzagni, Esq. Mary R.
Falconbridge Limited
Fiorito James
Holland & Bonzagni, P.C.
Langel Wayne A.
LandOfFree
Chromium removal from leach liquors produced during high... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Chromium removal from leach liquors produced during high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromium removal from leach liquors produced during high... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3947398