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2 211 831

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C1

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IPC

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Application

2002113416/04, 2002-05-22

(24)

Start date

2002-05-22

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Actual filing date

2002-05-22

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Published

2003-09-10

(72)

Inventor

Savran V.I.Ehndjus'Kin V.P.Simakova N.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR PREPARING ALKALINE METAL ALKYLXANTHOGENATES Russian patent published in 2003 - IPC

Abstract RU 2211831 C1

FIELD: chemical technology. SUBSTANCE: invention relates to preparing alkaline metal alkylxanthogenates that are used widely as flotation reagents in concentration of ores of nonferrous, rare and precious metals. Method involves preparing alkaline metal alcoholate by interaction of solid alkali with 6-7-fold excess of alcohol, distilling off reaction water, interaction of prepared spirituous solution of alkali metal alcoholate with carbon disulfide taken in the mole ratio = 1:(1.01-1.03) and isolation of the end product by crystallization and filtration being at 0 C mainly. The yield is 98%, content of basic substance is 99.9%. EFFECT: enhanced yield, quality of product and effectiveness of process. 5 cl, 3 tbl, 22 ex

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RU 2 211 831 C1

Authors

Savran V.I.

Ehndjus'Kin V.P.

Simakova N.V.

Dates

2003-09-10—Published

2002-05-22—Filed

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