Method for producing copper oxide

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal

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423 33, 423604, C01G 302, C22B 1500

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054926815

ABSTRACT:
A method for producing copper oxide. In the method, a copper bearing material, aqueous ammonia, and a sufficient amount of an ammonium salt to double the rate of production of copper oxide in the absence of the salt are placed in a single vessel. The vessel is closed, and oxygen is fed into the vessel. The mixture is stirred and heated to a temperature of between approximately 70.degree. and 130.degree. C. to dissolve the copper bearing material into aqueous ammoniacal copper ion. The aqueous ammoniacal copper ion is reacted with the oxygen in the vessel to form solid copper oxide particles, which are then recovered.

REFERENCES:
patent: 1131986 (1915-03-01), Benedict
patent: 2536096 (1951-01-01), Rowe
patent: 2670273 (1954-02-01), Munn
patent: 2912305 (1959-11-01), Wagner
patent: 3457035 (1969-07-01), Barker
patent: 3492115 (1970-01-01), Mahalla
patent: 3647423 (1972-03-01), Acoveno
patent: 3760070 (1973-09-01), Joice, et al.
patent: 4065300 (1977-12-01), Poarch
patent: 4478698 (1984-10-01), Wilkomirsky et al.
patent: 4944935 (1990-07-01), Langner et al.
patent: 5310533 (1994-05-01), Browne
Fisher, J., "Corrosion of Copper-Gold Alloys by Oxygen-Containing Solutions of Ammonia and Ammonium Salts," Journal of the Electrochemical Society, vol. 204, No. 5, pp. 282-286 (1956), no month.
Floridis, T. P., "Accelerated Ammoniacal Leaching of Cooper," Metallurgical Transactions B, vol. 6B, pp. 198-199, (1975) no month.
Guy. S., "Solubility of Lead and Zinc Compounds in Ammoniacal Ammonium Sulphate Solutions," Hydrometallurgy, vol. 8, pp. 251-260 (1982), no month.
Zembura, Z., "Spontaneous dissolution of Copper in Air- or Oxygen-Saturated Aqueous Ammonia Solutions," Polish Journal of Chemistry, vol. 59, pp. 907-913 (1985), no month.
Zembura, Z., "A Mass Transfer Model for the Autocatalytic Dissolution of a Rotating Copper Disc in Oxygen Saturated Ammonia Solutions," Journal of Applied Electrochemistry, vol. 20, pp. 365-369 (1990), no month.
Habashi, F., "Kinetics and Mechanism of Copper Dissolution in Aqueous Ammonia," Berichte der Bunsengesellschaft Physik. Chem., vol. 67, pp. 402-406 (1962), no month.
Halpern, J., "Kinetics of the Dissolution of Copper in Aqueous Ammonia," Journal of the Electrochemical Society, pp. 421-428 (1953), no month.
Jayaweera, L., "Purification of Copper Ammine Solution During the Production of Copper Oxide," the Fourteenth Australasian Chemical Engineering Conference, Chemeca 86, pp. 95-100 (1986), no month.
Lane, R., "Kinetics of the Reaction Between Copper and Aqueous Ammonia," J.A.C.S., vol. 68, pp. 1699-1704 (1946), no month.
Lu, B., "Rates of Copper Dissolution in Aqueous Ammonium Hydroxide Solutions," J.A.C.S., vol. 77, pp. 6136-6139 (1955), no month.
Minghua, M., "Studies on the Reduction of Copper Ion in Aqueous Ammoniacal Ammonium Sulphate Solution by Hydrogen," Papers Presented at the Extraction Metallurgy 1985 Symposium, pp. 629-643 (1985), no month.
Prabhakar, S., "Studies on Ammoniacal Leaching of Oxide Ores of Copper," pp. 211-219, Journal and year of publication unknown.
Staker, W., et al., "Improved Cupric Ammonium Carbonate Leaching of Copper Scrap," Bureau of Mines Report of Investigations 7554, pp. 1-9 (1971), no month.
Schweitzer, J. Prakt Chem., vol. 76, p. 344 (1859), no month.
Siemens, R., "Process for Recovery of Nickel, Cobalt, and Cooper from Domestic Laterites," Mining Congress Journal, vol. 63, No. 1, pp. 29-34 (1977), no month.
Williams, R., et al., "Cooper Concentrate Dissolution Chemistry and Kinetics in an Ammonia-Oxygen Environment," Fundamental Aspects of Hydrometallurgical Processes, AIChE symposium Series, vol. 74, No. 173, pp. 21-27 (1978), no month.
Wilmshurst, R., "Development of an Ammonia Leach Process for a Dolomite Copper Ore," pp. 1085-1100, Tenth International Mineral Processing Congress 1973: Proceedings of the Tenth International Mineral Processing Congress, M. J. Jones, ed., the Institution of Mining and Metallurgy (1974), no month.
Yamasaki, E., Sci. Rep. Tohoku Imp. Iniv. Ser. I, vol. 9, p. 169 (1920), no month.
Zembura, Z., "Kinetics of Copper dissolution in Aqueous Solutions of Ammonia," Roczniki Chemii Ann., Soc. Chim. Polonorum, vol. 47, pp. 1503-1510 (1973), no month.

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