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2 100 276

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C1

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IPC

(21) (22)

Application

94008115/25, 1994-03-05

(22)

Actual filing date

1994-03-05

(45)

Published

1997-12-27

(72)

Inventor

Pirozhkov A.P.Patrushev V.V.Pashkov G.L.Kholmogorov A.G.

(73)

Holder

Institut Khimii I Khimiko-Metallurgicheskikh Protsessov So Ran

METHOD OF MAGNESIUM OXIDE PRODUCING Russian patent published in 1997 - IPC

Abstract RU 2100276 C1

FIELD: chemical technology, inorganic chemistry. SUBSTANCE: natural magnesite is subjected for roasting and cinder is leached with ammonium sulfate solution at concentration 90-200 g/$$$ at 70-90 C for 0.5-1 h. From the obtained solution magnesium hydroxide is precipitated with ammonium carbonate. In 0.5 h after ammonium carbonate addition ammonium aqueous solution is added by small portions at 30-40 C for 0.5 h. EFFECT: improved method of producing. 1 tbl

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RU 2 100 276 C1

Authors

Pirozhkov A.P.

Patrushev V.V.

Pashkov G.L.

Kholmogorov A.G.

Dates

1997-12-27—Published

1994-03-05—Filed

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