Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Patent
1990-02-08
1992-04-14
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
423 22, 423 59, 423263, 423491, C01B 1706
Patent
active
051044455
ABSTRACT:
The present invention is a process to recover metals from refractory ores. It involves the chlorination of an ore concentrate in the presence of solid salt at a temperature between 300.degree. and 650.degree. C. Thereafter, an oxidation step can be used to convert iron chloride to iron oxide. Subsequent separation steps remove the salt, gangue, and iron oxides. Separate pathways are described for precious and base metal recovery.
REFERENCES:
patent: 490193 (1893-01-01), French
patent: 589959 (1897-09-01), Crooke
patent: 607287 (1898-07-01), Sinding-Larsen
patent: 927046 (1909-07-01), Hogel
patent: 1049746 (1913-01-01), Malm
patent: 1185817 (1916-06-01), Malm
patent: 1364804 (1921-01-01), Rankin
patent: 1883234 (1932-10-01), Lenox et al.
patent: 2642339 (1953-06-01), Sawyer
patent: 2895796 (1959-07-01), Hill
patent: 3069254 (1962-12-01), Grueneau
patent: 3092456 (1963-06-01), Nelson et al.
patent: 3376112 (1968-04-01), Dunn et al.
patent: 3537961 (1970-11-01), White et al.
patent: 3642454 (1972-02-01), Nylander
patent: 3652219 (1972-03-01), Peters et al.
patent: 3791812 (1984-02-01), Frank et al.
patent: 3802870 (1974-04-01), Bell
patent: 3825651 (1974-07-01), Heinen et al.
patent: 3834896 (1974-09-01), Eisele et al.
patent: 3880650 (1975-04-01), Pemsler
patent: 3894927 (1975-07-01), Kane
patent: 3899322 (1975-08-01), Yosim
patent: 3906074 (1975-09-01), Spreckelmeyer
patent: 3938989 (1976-02-01), Bell
patent: 3966888 (1976-06-01), Braithwaite et al.
patent: 3979265 (1976-09-01), Fonseca
patent: 3983224 (1976-09-01), Allain et al.
patent: 3988415 (1976-10-01), Barr
patent: 3988417 (1976-10-01), Polinsky
patent: 3992507 (1976-11-01), Cardwell et al.
patent: 3994720 (1976-11-01), Dubeck
patent: 4011146 (1977-03-01), Coltrinari et al.
patent: 4038066 (1977-07-01), Bell
patent: 4110106 (1978-08-01), Frankiewicz
patent: 4144056 (1979-03-01), Kruesi
patent: 4179492 (1979-12-01), Kruesi
patent: 4209501 (1980-06-01), Kruesi
patent: 4353740 (1982-10-01), Dunn
patent: 4362607 (1982-12-01), Ritcey et al.
patent: 4420380 (1983-12-01), Ducati
patent: 4500498 (1985-02-01), Kruesi et al.
patent: 4551213 (1985-11-01), Wilson
patent: 4576812 (1986-03-01), von Hahn
patent: 4612171 (1986-09-01), Holmstrom
patent: 4613365 (1986-09-01), Berg
D. Delarue, "Behavior of Oxides and of Metal Sulfides in LiCl-KCl Molten Eutectic," Chimie Analytique, vol. 44, No. 3 (Mar. 1982).
M. C. Campbell & G. M. Ritcey, "Applications of Chloride Metallurgy to Base-Metal Sulphide and Uranium Ores at Canmet," Extractive Metallurgy Proceedings, pp. 76-90 (1981).
D. H. Yee et al, "Chlorination of Chalcopyrite", Bureau of Mines Report of Investigations (1977), U.S. Department of the Interior.
T. Mukherjee et al, "Base Metal Resource Processing by Chlorination," Mineral Processing Technology Review (1983) vol. 1, pp. 111-153.
Titi-Manyaka et al, "Thermogravimetric Investigation of the Chlorination Behaviors of Some Common Metals and Their Oxides," Society of Mining Engineers, AIME, vol. 252 (Sep. 1972) pp. 307-314.
Titi-Manyaka et al., "Chlorination Behaviors of Some Metal Sulfides as Investigated by Thermogravimetric Analysis" Society of Mining Engineers, AIME, vol. 254 (Mar. 1973) pp. 37-42.
J. B. Rivarola et al, "Recovery of Platinum from Spent Catalysts of Naphthas Reforming", Lat. Am. J. Chem. Eng. Appl. Chem. (1981), pp. 47-52.
B. R. Palmer et al, "Recovery of Gold by High-Temperature Chlorination", pp. 1-35.
M. Yoshinaga et al, "Tec-Kowa Pelletizing Chlorination Process, its Establishment and Development", The Metallurgical Society, Inc. (1985), pp. 221-238.
M. N. Zyryanov et al, "Importance of Optimum [Chemical] Form of Iron in the Chlorine-Sublimation Treatment of Refractory Gold-Bearing Concentrates", Tsvetnye Metally, 44, pp. 34-35 (1971).
A. L. Engel et al, "Chloride Volatization and Other Tests on a Gold-Copper Ore", Report of Investigations 4612, U.S. Department of the Interior (Dec. 1949).
H. Monk et al, "Purification of Zinc Chloride Produced by Chlorination of Zinc Sulphide Ore", 82 Section C of the Transactions of the Institution of Mining & Metallurgy 161 (1973).
K. Adam et al, "Thermogravimetric Investigation of the Oxidation Behaviors of Some Common Metal Chlorides", Minerals and Metallurgical Processing (Nov. 1984), pp. 190-196.
A. W. Henderson et al, "Dechlorination of Ferric Chloride with Oxygen", Metallurgical Transactions vol. 3 (Oct. 1972) pp. 2579-2583.
G. L. Hundley et al., "Oxidation of Mixed Iron and Copper Chlorides", Bureau of Mines, Report of Investigations 7970 (1974).
S. Fukushima et al, "Mitsubishi Process for Upgrading Ilmenite and Chlorine Recirculation", Paper No. A74-48, The Metallurgical Society of AIME, pp. 443-466.
Dubrovsky Michael
Marcantonio Paul J.
Chevron Research & Technology Co.
Rosenberg Peter D.
LandOfFree
Process for recovering metals from refractory ores does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for recovering metals from refractory ores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for recovering metals from refractory ores will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2346057