Show metadata Hide metadata

(19)

(11)

2 280 614

(13)

(51)

IPC

C01B33/18(2006-01-01)

(21) (22)

Application

2005103370/15, 2005-02-09

(24)

Start date

2005-02-09

(22)

Actual filing date

2005-02-09

(45)

Published

2006-07-27

(72)

Inventor

Mel'Nichenko Evgenija IvanovnaEhpov Dantij Grigor'EvichSavel'Ev Sergej Borisovich

(73)

Holder

Institut Khimii Dal'Nevostochnogo Otdelenija Rossijskoj Akademii Nauk Gosudarstvennogo Uchrezhdenija)(Institut Khimii Dvo Ran)

AMORPHOUS SILICON DIOXIDE PREPARATION PROCESS Russian patent published in 2006 - IPC C01B33/18

Abstract RU 2280614 C1

FIELD: inorganic compounds technologies.

SUBSTANCE: amorphous silicon dioxide is prepared by solid-phase reaction of ammonium hexafluorosilicate and silica-containing material at molar ratio (NH₄)₂SiF₆ : SiO₂ = (0.5-5):1 at 220-320°C followed by isolation of silicon dioxide from resulting sublimate. Any silica-containing materials are appropriate as starting material.

EFFECT: reduced energy intensity of process and increased purity of product.

1 tbl, 2 ex

Similar patents RU2280614C1

Title	Year	Author	Number
MINERAL DESILICONIZATION PROCESS	2005	Mel'Nichenko Evgenija Ivanovna Ehpov Dantij Grigor'Evich	RU2317252C2
METHOD FOR SYNTHESIS OF INORGANIC FLUORINE-CONTAINING COMPOUNDS	2004	Mel'Nichenko Evgenija Ivanovna	RU2278073C1
METHOD OF PROCESSING BOROSILICATE CONCENTRATES	2008	Ehpov Dantij Grigor'Evich Krysenko Galina Filippovna Medkov Mikhail Azar'Evich Vovna Aleksandr Ivanovich	RU2375305C1
METHOD OF HIGH-PURITY SILICA PREPARATION	2008	Andreev Artem Andreevich D'Jachenko Aleksandr Nikolaevich Krajdenko Roman Ivanovich	RU2355634C1
METHOD TO PROCESS TITANIUM-SILICON-CONTAINING STOCK	2008	Andreev Artem Andreevich D'Jachenko Aleksandr Nikolaevich	RU2377332C2
METHOD OF KYANITE CONCENTRATE RECYCLING	2013	Grishin Nikolaj Nikitovich Ivanova Alla Gennad'Evna	RU2518807C1
METHOD OF PROCESSING TITANIUM-CONTAINING MINERAL RAW MATERIALS	2019	Gordienko Pavel Sergeevich Pashnina Elena Vladimirovna Shabalin Ilya Aleksandrovich Dostovalov Demyan Viktorovich	RU2717418C1
METHOD FOR PROCESSING OF ZIRCONIUM CONCENTRATE	1993	Mel'Nichenko E.I. Ehpov D.G. Gordienko P.S. Shkol'Nik Eh.L. Nagorskij L.V. Kozlenko I.A. Buznik V.M.	RU2048559C1
METHOD OF PROCESSING TITANIUM-CONTAINING MINERAL STOCK	1998	Mel'Nichenko E.I. Ehpov D.G. Shcheka S.A. Krysenko G.F.	RU2136771C1
METHOD FOR PRODUCING AMMONIUM HEXAFLUOROSILICATE	1996	Mel'Nichenko E.I. Krysenko G.F. Ehpov D.G. Ovsjannikova A.A. Maslennikova I.G. Gordienko P.S. Malakhov V.V. Shcheka S.A.	RU2097321C1

RU 2 280 614 C1

Authors

Mel'Nichenko Evgenija Ivanovna

Ehpov Dantij Grigor'Evich

Savel'Ev Sergej Borisovich

Dates

2006-07-27—Published

2005-02-09—Filed