Show metadata Hide metadata

(19)

(11)

2 467 949

(13)

(51)

IPC

C01B25/234(2006-01-01)

(21) (22)

Application

2011126585/05, 2011-06-29

(24)

Start date

2011-06-29

(22)

Actual filing date

2011-06-29

(45)

Published

2012-11-27

(72)

Inventor

Brizitskaja Natal'Ja MitrofanovnaBukkolini Natal'Ja Vasil'EvnaTsikin Maksim NikolaevichDolgov Viktor Vasil'EvichNorov Andrej MikhajlovichMaljavin Andrej Stanislavovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Institut Po Udobrenijam I Insektofungitsidam Im. Prof. Ja.V. Samojlova"

METHOD FOR DEFLUORINATION OF WET-PROCESS PHOSPHORIC ACID Russian patent published in 2012 - IPC C01B25/234

Abstract RU 2467949 C1

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. An aluminium-containing additive is added to wet-process phosphoric acid while stirring. The precipitate is separated from the obtained suspension. The additive used is a nepheline concentrate in stoichiometric amount of 110-150%. Stirring is carried out at temperature 30-80°C for 30-60 minutes.

EFFECT: invention enables to defluorinate phosphoric acid using a simple and cheap method without evaporation and prevents release of fluorine into the gaseous phase.

1 tbl

Similar patents RU2467949C1

Title	Year	Author	Number
METHOD OF PREPARING PHOSPHORIC ACID	1995	Kuznetsov A.A. Guller B.D. Shapkin M.A. Bukseev V.V. Zubkov V.Ja.	RU2145571C1
METHOD OF OBTAINING EXTRACTION PHOSPHORIC ACID	2014	Grinevich Anatolij Vladimirovich Kuznetsov Evgenij Mikhajlovich Kiselev Andrej Alekseevich	RU2583956C2
PHOSPHORIC ACID CONCENTRATION AND PURIFICATION PROCESS	0	Ostrovlyanchik Evgeniya Sergeevna Grinevich Anatolij Vladimirovich Abramov Vladimir Yakovlevich Voroshin Vyacheslav Aleksandrovich Alekseev Aleksej Ivanovich Badalyants Kharen Azrapetovich Talmud Mark Moiseevich Babkin Valerij Veniaminovich Uspenskij Dmitrij Dmitrievich Koryakov Vladimir Vasilevich Sokolova Tatyana Aleksandrovna Koryukin Vladimir Mifodevich	SU1467034A1
METHOD FOR PREPARING MONOAMMONIUM PHOSPHATE	2004	Grinevich V.A. Levin B.V. Grinevich A.V. Kerzhner A.M. Rezen'Kov M.I.	RU2259941C1
METHOD OF OBTAINING AMMONIUM PHOSPHATES	2008	Grinevich Vladimir Anatol'Evich Kerzhner Aleksandr Martkovich Grinevich Anatolij Vladimirovich Kiselev Andrej Alekseevich	RU2368566C1
METHOD OF PRODUCING WET-PROCESS PHOSPHORIC ACID	2015	Grinevich Anatolij Vladimirovich Kuznetsov Evgenij Mikhajlovich Kiselev Andrej Alekseevich	RU2599525C1
METHOD OF PRODUCING COMPOUND FERTILISER	2009	Mustafin Akhat Gaziz'Janovich Sharipov Tagir Vil'Danovich	RU2411225C1
METHOD OF EXTRACTING LANTHANIDES FROM WET-PROCESS PHOSPHORIC ACID	2010	Lokshin Ehfroim Pinkhusovich Tareeva Ol'Ga Al'Bertovna	RU2443630C1
METHOD OF PRODUCING PHOSPHORIC ACID	0	Pozin Maks Efimovich Zinyuk Renat Yurevich Guller Boris Davidovich Garkun Vsevolod Kuzmich Vlasov Pavel Petrovich Gavrilyuk Leontij Mikhajlovich Palij Viktor Egorovich Binshtejn Aron Beniaminovich Nikolajchuk Petr Mikhajlovich Dakhnovskij Vladimir Stepanovich	SU710924A1
METHOD OF PURIFYING EXTRACTED PHOSPHORIC ACID FROM FLUORINE	0	Rodin Vladimir Iosifovich Zajtsev Valentin Alekseevich Efimov Sergej Evgenevich	SU697392A1

RU 2 467 949 C1

Authors

Brizitskaja Natal'Ja Mitrofanovna

Bukkolini Natal'Ja Vasil'Evna

Tsikin Maksim Nikolaevich

Dolgov Viktor Vasil'Evich

Norov Andrej Mikhajlovich

Maljavin Andrej Stanislavovich

Dates

2012-11-27—Published

2011-06-29—Filed