Process for the recovery of noble metals from solutions

Details Process for the recovery of noble metals from solutions Process for the recovery of noble metals from solutions

1983-06-09

1987-08-18

Stoll, Robert L.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75121, 423 22, C22B 1104

Patent

active

046875140

ABSTRACT:
There is described a process for the recovery of noble metals from dilute aqueous or non-aqueous solution which contain salts of non-noble metals and/or difficulty volatile inorganic or organic compounds, which is generally usable, simple to carry out and supplies high yields of noble metals. There is added to the noble metal solution elemental tellurium or a reducible tellurium compound at a temperature of 100.degree. to 250.degree. C. and the precipitate formed worked up in known manner.

REFERENCES:
Ohachi, T. and Taniguchi, I., "Growth of .alpha.Ag.sub.2 S and .alpha.Ag.sub.2 Se Single Crystals in Solid/Vapour System", Journal of Crystal Growth 40 (1977), 109-117.
Sienko, Michell J. and Plane, Robert A., Chemistry, second Edition, McGraw-Hill (1961), pp. 525-526.
Cooper, W. Charles, Tellurium, Van Nostrand Reinhold Co., 1971, pp. 114 and 116.

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