James W Olson
Electrician at Hoyt Ct, Arvada, CO
License number
Colorado 930644
Issued Date
Oct 21, 1985
Renew Date
Oct 21, 1985
Type
Electrical Apprentice
Address
Address
7453 Hoyt Ct, Arvada, CO 80005
Personal information
See more information about James W Olson at radaris.comName
Address
Phone
520 Quakie Way, Bailey, CO 80421
5253 S Cody St, Littleton, CO 80123
490 Stevens Cir, Platteville, CO 80651
48 E Montezuma Ave, Cortez, CO 81321
11438 Cannonade Way, Parker, CO 80138
Professional information
See more information about James W Olson at trustoria.com
Recovery Of Molybdenum From Molybdenum Bearing Sulfide Materials By Bioleaching In The Presence Of Iron
Recovery Of Molybdenum From Molybdenum Bearing Sulfide Materials By Bioleaching In The Presence Of Iron
US Patent:
8268037, Sep 18, 2012
Filed:
Jul 19, 2007
Appl. No.:
12/375955
Inventors:
Wolfgang Kummer - Goslar, DE
Wilfried Gutknecht - Goslar, DE
James Gregory Olson - Arvada CO, US
Thomas R. Clark - Lakewood CO, US
Wilfried Gutknecht - Goslar, DE
James Gregory Olson - Arvada CO, US
Thomas R. Clark - Lakewood CO, US
Assignee:
H.C. Starck GmbH
International Classification:
C22B 3/18, C22B 3/06
US Classification:
75712, 75743
Abstract:
The invention relates to a method of recovering molybdenum from a molybdenum bearing sulfide material. The material is contacted with a leaching solution in the presence of iron compounds and mesophilic or thermophilic iron oxidizing microorganisms and subsequently, a leaching process is performed by controlling the molar ratio of dissolved ferric iron to dissolved molybdenum. Preferably, a high amount and molar excess of dissolved iron is used. The presence of high concentrations of ferric iron in bioleach solutions allows iron-oxidizing microorganisms to grow and oxidize iron and bioleach molybdenite at dissolved Mo concentrations as high as 4. 4 g/L. Organic metabolites were not required for protecting cells from Mo toxicity. Maximum dissolution rates depend on reactor configuration, with agglomerated material simulating heap leaching of almost 1% Mo/day, but up to 10. 2% Mo/day in suspension/stirred reactor configurations, with rate highly dependent on temperature within the range of 25° C.