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2 040 535

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IPC

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Application

93057158/26, 1993-12-23

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Actual filing date

1993-12-23

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Published

1995-07-25

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Inventor

Grechishkin V.A.Alekseev A.A.Garkavenko N.I.Zajdenvarg V.E.Zavodchikov L.V.Kopylov V.M.Kondrat'Eva Z.G.Kostylev I.M.Loginov V.E.Malyshev Ju.N.Obysov A.V.Popov V.N.Cherkasov G.P.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Po Dobyche I Pererabotke UgljaAktsionernoe Obshchestvo Otkrytogo Tipa Nauchno-Issledovatel'Skij I Proektnyj Institut Azotnoj Promyshlennosti I Produkty Organicheskogo Sinteza"

METHOD OF PROCESSING SILICEOUS ROCK Russian patent published in 1995 - IPC

Abstract RU 2040535 C1

FIELD: chemical technology. SUBSTANCE: method involves grinding siliceous rock waste of coal mining on the basis of SiO2, containing also Al2O3, Fe2O3, FeS2, CaO, CaO, coal and impurities: MgO, MgO, Na2O, K2O followed by thermal treatment at 350-750 C for 4-6 h and grinding product up to mean particle size 1-63 mcm. Properties of filler-pigment: covering power is 190-220 g/190-120 g/m2, oil absorption is 23.5-59.0 g/100 g pigment, hardness by Mohs scale is 2-6.5. EFFECT: improved method of processing. 3 tbl

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RU 2 040 535 C1

Authors

Grechishkin V.A.

Alekseev A.A.

Garkavenko N.I.

Zajdenvarg V.E.

Zavodchikov L.V.

Kopylov V.M.

Kondrat'Eva Z.G.

Kostylev I.M.

Loginov V.E.

Malyshev Ju.N.

Obysov A.V.

Popov V.N.

Cherkasov G.P.

Dates

1995-07-25—Published

1993-12-23—Filed

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