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IPC

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Application

99103399/12, 1999-02-17

(24)

Start date

1999-02-17

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Actual filing date

1999-02-17

(45)

Published

2000-07-10

(72)

Inventor

Bol'Shakov A.A.Vjalkova E.I.

(73)

Holder

Tjumenskaja Gosudarstvennaja Arkhitekturno-Stroitel'Naja Akademija

METHOD OF CHEMICALLY TREATING SOILS POLLUTED WITH PETROLEUM AND PETROLEUM DERIVATIVES Russian patent published in 2000 - IPC

Abstract RU 2152274 C1

FIELD: oil pollution removal. SUBSTANCE: oil- polluted soil is mixed with synthetic detergents and either (i) with selfdegradable ferrochrome slags containing at least 46% CaO, 7-16% MgO, 24-32% SiO2, 4-8% Al2O3, and 2-6% Cr2O3, in which fraction below 0.5 mm represents up to 97%, or (ii) with powdered lime containing at least 45% CaO and MgO, from which active MgO represents no more than 5% and fraction below 1 mm at least 85%. EFFECT: reduced expenses and extended application area. 2 ex

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RU 2 152 274 C1

Authors

Bol'Shakov A.A.

Vjalkova E.I.

Dates

2000-07-10—Published

1999-02-17—Filed

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