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2 702 883

(13)

(51)

IPC

C22B59/00(2006-01-01)

C01B9/08(2006-01-01)

(21) (22)

Application

2019106368, 2019-03-06

(24)

Start date

2019-03-06

(22)

Actual filing date

2019-03-06

(45)

Published

2019-10-11

(72)

Inventor

Medkov Mikhail AzarevichKrysenko Galina FilippovnaEpov Dantij Grigorevich

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Uchrezhdenie Nauki Institut Khimii Dalnevostochnogo Otdeleniya Rossijskoj Akademii Nauk Dvo Ran)

FLUORITE OPENING METHOD Russian patent published in 2019 - IPC C22B59/00 C01B9/08

Abstract RU 2702883 C1

FIELD: technological processes.

SUBSTANCE: invention relates to methods of processing mineral raw materials, in particular fluorite and fluorite concentrates, to obtain fluorine compounds used as fluorinating agents. Method of processing raw material includes sulphatisation, carried out by roasting with 20 % excess of ammonium fluoride at temperature of 420–450 °C for 1.0–1.5 hours to obtain gypsum and ammonium fluoride as products.

EFFECT: method simplifies the process with simultaneous increase of its safety.

1 cl, 2 ex

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RU 2 702 883 C1

Authors

Medkov Mikhail Azarevich

Krysenko Galina Filippovna

Epov Dantij Grigorevich

Dates

2019-10-11—Published

2019-03-06—Filed