Loren P Hoboy
Engineers at Kingsway, Anacortes, WA
License number
Colorado 22145
Issued Date
Jan 27, 1984
Renew Date
Feb 1, 1996
Expiration Date
Feb 1, 1996
Type
Professional Engineer
Address
Address
4102 Kingsway, Anacortes, WA 98221
Professional information
Process To Selectively Recover Metals From Waste Dusts, Sludges And Ores
US Patent:
6770249, Aug 3, 2004
Filed:
Jan 5, 2000
Appl. No.:
09/478625
Inventors:
Loren P. Hoboy - Anacortes WA
Nick A. Wolf - Covington WA
Tonya F. Yoder - Vashon Island WA
Nick A. Wolf - Covington WA
Tonya F. Yoder - Vashon Island WA
Assignee:
Chester W. Whitman - Vashon Island WA
International Classification:
C22B 700
US Classification:
423 38, 423 98, 423109, 4231501, 4231503
Abstract:
A hydrometallurgical process utilizing an atmospheric calcium chloride leach to selectively recover from various metal feed stocks (consisting of elemental metals, metal oxides, metal ferrite, metal hydroxide, metal carbonates, metal sulfate/sulfur compounds, and their hydrates, specifically including but not limited to EAF Dust KO61) zinc, lead, cadmium, silver, copper and other valuable metals to the exclusion of iron, magnesium, halogen salts and other unwanted elements. The process solves the problem of iron and magnesium leach solution contamination because iron is unexpectedly converted to magnetite. The heavy metals are cemented out of solution using zinc or other selected dust at a pH of 6 or greater under unique and unexpected conditions, which do not require acid. Simonkolleite/zinc-oxychloride/zinc-hydroxide is produced from the purified zinc chloride complex pregnant leach solution and is converted directly to high purity active rubber grade 99+% zinc oxide having small particle size and high surface area. The products are metal concentrates suitable for: metal refiner/processors, production of elemental metal, or other conversion processes.
Process To Produce Simonkolleite, Zinc Oxide And Zinc Hydroxide
US Patent:
6863873, Mar 8, 2005
Filed:
Sep 23, 2003
Appl. No.:
10/669146
Inventors:
Loren P. Hoboy - Anacortes WA, US
Nick A. Wolf - Covington WA, US
Tonya F. Yoder - Vashon Island WA, US
Nick A. Wolf - Covington WA, US
Tonya F. Yoder - Vashon Island WA, US
International Classification:
C22B019/00
US Classification:
423103, 423104, 423622
Abstract:
A hydrometallurgical process utilizing an atmospheric calcium chloride leach to selectively recover from various metal feed stocks (consisting of elemental metals, metal oxides, metal ferrite, metal hydroxide, metal carbonates, metal sulfate/sulfur compounds, and their hydrates, specifically including but not limited to EAF Dust K061) zinc, lead, cadmium, silver, copper and other valuable metals to the exclusion of iron, magnesium, halogen salts and other unwanted elements. The process solves the problem of iron and magnesium leach solution contamination because iron is unexpectedly converted to magnetite. The heavy metals are cemented out of solution using zinc or other selected dust at a pH of 6 or greater under unique and unexpected conditions, which do not require acid. Simonkolleite/zinc- oxychloride/zinc-hydroxide is produced from the purified zinc chloride complex pregnant leach solution and is converted directly to high purity active rubber grade 99+% zinc oxide having small particle size and high surface area. The products are metal concentrates suitable for: metal refiner/processors, production of elemental metal, or other conversion processes.