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Oxidation Process for Improving Gold Recovery from Carbon-Bearing Gold Ores.

PB205500

Publication Date	1971
Personal Author	Scheiner, B. J.; Lindstrom, R. E.; Henrie, T. A.
Page Count	20
Abstract	Carbonaceous gold-bearing ores of the type that occur in north-central and northeastern Nevada were investigated. Specific objectives were to identify the carbon and organic compounds that prevent adequate gold recovery from the ore by cyanidation and to develop an economical process that would overcome the detrimental effect of the carbonaceous constituents. Activated carbon and long-chain organic compounds containing sulfur and nitrogen were found in the ore. Part of the material consisted of stable gold organic complexes. A mild oxidation technique that allowed gold extraction as high as 96 percent by subsequent cyanidation was developed. A variety of oxidents was shown to be effective in improving gold recovery, including chlorine and sodium hypochlorite (NaOCl). An electrolytic oxidation process was developed that was particularly advantageous from an economic and effectiveness standpoint. (Author)
Keywords	Gold Cyaniding(Beneficiation) Oxidation Contaminants Carbon Organic compounds Complex compounds Mineral deposits
Source Agency	Invalid Source Agency Code
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of Investigations.
NTIS Issue Number	197204

Oxidation Process for Improving Gold Recovery from Carbon-Bearing Gold Ores.

Oxidation Process for Improving Gold Recovery from Carbon-Bearing Gold Ores.
PB205500

Publication Date	1971
Personal Author	Scheiner, B. J.; Lindstrom, R. E.; Henrie, T. A.
Page Count	20
Abstract	Carbonaceous gold-bearing ores of the type that occur in north-central and northeastern Nevada were investigated. Specific objectives were to identify the carbon and organic compounds that prevent adequate gold recovery from the ore by cyanidation and to develop an economical process that would overcome the detrimental effect of the carbonaceous constituents. Activated carbon and long-chain organic compounds containing sulfur and nitrogen were found in the ore. Part of the material consisted of stable gold organic complexes. A mild oxidation technique that allowed gold extraction as high as 96 percent by subsequent cyanidation was developed. A variety of oxidents was shown to be effective in improving gold recovery, including chlorine and sodium hypochlorite (NaOCl). An electrolytic oxidation process was developed that was particularly advantageous from an economic and effectiveness standpoint. (Author)
Keywords	Gold Cyaniding(Beneficiation) Oxidation Contaminants Carbon Organic compounds Complex compounds Mineral deposits
Source Agency	Invalid Source Agency Code
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of Investigations.
NTIS Issue Number	197204