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2 040 466

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IPC

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Application

92003542/26, 1992-11-03

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Actual filing date

1992-11-03

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Published

1995-07-25

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Inventor

Avdeev V.V.Nikol'Skaja I.V.Voronkina A.V.Bubnov V.K.Oparin A.F.Zajachkovskij A.A.Shatokhin N.N.Davkin I.A.Chikin V.I.

(73)

Holder

Avdeev Viktor Vasil'Evich

METHOD FOR PROCESSING OF DIAMOND-GRAPHITE MATERIAL Russian patent published in 1995 - IPC

Abstract RU 2040466 C1

FIELD: recovery of diamonds. SUBSTANCE: method for processing of diamond-graphite material includes treatment of initial material with reagent to form insertion compound in graphite mixed with diamond, and produced mixture is separated, first, in flow of gas when mixture is heated up to 600-1000 C with mixture heating rate of 50-500 C/s and then, diamond and expanded graphite are separated in gas flow whose cross-section exceeds that in first gas flow by 10-30 times. Reagent is used in form of mixture of potassium bichromate with sulfuric acid or ammonium persulfate with sulfuric acid. Gas flow is in form of air or nitrogen. EFFECT: higher efficiency. 3 cl, 1 tbl

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RU 2 040 466 C1

Authors

Avdeev V.V.

Nikol'Skaja I.V.

Voronkina A.V.

Bubnov V.K.

Oparin A.F.

Zajachkovskij A.A.

Shatokhin N.N.

Davkin I.A.

Chikin V.I.

Dates

1995-07-25—Published

1992-11-03—Filed

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