Process for recovering synthetic diamonds from pressed runs

Details Process for recovering synthetic diamonds from pressed runs Process for recovering synthetic diamonds from pressed runs

1975-09-24

1976-07-13

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423461, C01B 3106

Patent

active

039694895

ABSTRACT:
A diamond synthesis run containing synthetic diamonds, graphite and catalyst from a high pressure temperature diamond process is treated with bromine to remove substantially all of the graphite. After bromination, the run is subjected to electrolysis to remove the catalyst metals leaving the diamond product for recovery. Some of the diamonds may have a layer of graphite which is exfoliated by further treatment with liquid bromine.

REFERENCES:
patent: 3348918 (1967-10-01), Kruse
patent: 3630677 (1971-12-01), Angus
patent: 3644094 (1972-02-01), Stevens
patent: 3851027 (1974-11-01), Balchan et al.
Young, "Chemical Abstracts," vol. 45, 1951, 8221(g).
Pokorny, "Chemical Abstracts," vol. 56, 1962 11,207(a).

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