Title:
METHOD FOR PRODUCING DIAMOND-CONTAINING SYNTHETIC MATERIALS
Document Type and Number:
WIPO Patent Application WO/2003/086970
Kind Code:
A1
Abstract:
The invention relates to the production of artificial carbon-based materials, in particular to the production and purification of ultra-dispersed synthetic diamonds and can be used for extracting diamond-containing materials from the products of a detonation synthesis. The inventive method involves the detonation transformation of explosive material having a negative oxygen balance in the closed space of a blasting chamber in a nonoxidizing atmosphere, the evacuation of explosion products and the heat chemical purification thereof by a mineral acid followed by washing of impurities therefrom. The condensed detonation products are additionally exposed to the action of a shock wave, the chemical purification is carried out with a nitrogen acid aqueous solution in three stages: in the first stage, in periodic mode at a temperature ranging from 20 to 60 °C during the time of 0.5 to 5 hours; in the second stage, in continuous mode and in five temperature zones at a temperature ranging from 110 to 300 °C during the time of 20 to 120 minutes; and in the third stage, in periodic mode at a temperature ranging from 20 to 80 °C during the time of 0.5 to 5 hours with the additional blowing of a reaction mass by an oxygen-containing gas mixture. The additional action of the shock wave on the condensed products is carried out repeatedly from 1 to 50 times at intervals ranging from 5 to 20 minutes, the pressure of a front shock being specified within the range of 0.4 to 15.0 MPa.
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Inventors:
KORJENEVSKY ALEKSANDR PAVLOVIC (BY)
GUBAREVICH TATIANA MIKHAILOVNA (BY)
GUBAREVICH TATIANA MIKHAILOVNA (BY)
Application Number:
PCT/BY2003/000004
Publication Date:
October 23, 2003
Filing Date:
April 11, 2003
Export Citation:
Assignee:
NP ZAKRYTOE AKTSIONERNOE OBSCH (BY)
KORJENEVSKY ALEKSANDR PAVLOVIC (BY)
GUBAREVICH TATIANA MIKHAILOVNA (BY)
KORJENEVSKY ALEKSANDR PAVLOVIC (BY)
GUBAREVICH TATIANA MIKHAILOVNA (BY)
International Classes:
B01J3/08; C01B31/06; (IPC1-7): C01B31/06
Foreign References:
| RU2051092C1 | 1995-12-27 | |||
| RU2042615C1 | 1995-08-27 | |||
| RU2062644C1 | 1996-06-27 | |||
| RU2081821C1 | 1997-06-20 | |||
| RU2109683C1 | 1998-04-27 | |||
| RU2163222C2 | 2001-02-20 | |||
| BY4321C1 |
Attorney, Agent or Firm:
Samtsov, Valery Pavlovich (BY)
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