Recovery of gold from roaster calcine leach tailings

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9194023
APP PUB NO 20140112823A1
SERIAL NO

14061354

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method to recover gold lost in roaster calcine-leach tailings, due to the formation of cyanide refractory compounds or morphologies during the roasting process. The process can include acid leaching of magnetic concentrate from roaster leach tailings, combining the acid leach slurry to the pre-acidulation tank for pressure oxidation feed, acid pressure oxidation of the pressure oxidation feed, and recovery of gold.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
BARRICK GOLD CORPORATIONTORONTO ON M5J 2S1

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bhakta, Sajan Elko, US 1 2
Douglas, Wayne Spring Creek, US 1 2
Esplin, Jodi Spring Creek, US 2 2
Esplin, Todd Spring Creek, US 1 2
Stubina, Nathan Oakville, CA 1 2
Wang, Qiankun Pitt Meadows, CA 5 11

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 May 24, 2027
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00