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2 139 363

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IPC

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Application

98106193/02, 1998-03-25

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Start date

1998-03-25

(22)

Actual filing date

1998-03-25

(45)

Published

1999-10-10

(72)

Inventor

Muratov E.P.Shevkunov V.P.Shipunov N.I.Mukhin V.V.Snopkov Ju.V.Ivanov V.B.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Khimkontsentratov"

METHOD AND INSTALLATION FOR REFINING LITHIUM Russian patent published in 1999 - IPC

Abstract RU 2139363 C1

FIELD: nonferrous metallurgy. SUBSTANCE: lithium is poured into furnace reactor, which is then evacuated and flushed with inert gas. Lithium is heated, aged to precipitate heavy metal impurities, and filtered under inert gas overpressure, after which lithium is crystallized in upward direction to form ingots. Installation comprises furnace enclosing reactor, inert gas- supply means, filter, ingot molds with heat-insulation dome with cooling means disposed under mold bottom, lithium melt tapping pipe connected to filter with its one end and to mold feeder head with its other end, box and barrel accommodating upper part of pipe with filter, and barrel having lithium overflowing canals. Degree of lithium purification is thus increased by a factor of 1.8-2.0 and power consumption is decreased by 2.0 to 2.5 times. EFFECT: enhanced process efficiency. 16 cl, 1 dwg

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RU 2 139 363 C1

Authors

Muratov E.P.

Shevkunov V.P.

Shipunov N.I.

Mukhin V.V.

Snopkov Ju.V.

Ivanov V.B.

Dates

1999-10-10—Published

1998-03-25—Filed

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