METHOD OF REMOVING NON-DIAMOND CARBON FROM ULTRADISPERSED DIAMOND Russian patent published in 1999 - IPC

Abstract RU 2132816 C1

FIELD: purification of diamonds resulting from detonation wave. SUBSTANCE: diamond-containing blend suspension is introduced into high-pressure apparatus. Solid phase content is 5 wt %. Potassium nitrate is added, and apparatus is sealed. The whole is heated to 320-400 C, maintained for 30 in, cooled, washed, and dried. Content of impurities in treated diamond does not exceed 1 wt %. EFFECT: more efficient purification method.

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RU 2 132 816 C1

Authors

Kovrigin S.A.

Mitin A.N.

Uvarov S.V.

Dates

1999-07-10Published

1997-11-10Filed