METHOD OF RECOVERING RARE-EARTH METALS FROM MINERAL PHOSPHATE MATERIAL Russian patent published in 1997 - IPC

Abstract RU 2092602 C1

FIELD: metallurgy. SUBSTANCE: method consists in caking raw material with carbon and additives, treating thus obtained cake by water, and dissolving it in mineral acid. According to invention, caking is conducted in self-propagation high-temperature synthesis mode using, as additive, alkali metal nitrate, whereas cake is dissolved in hydrochloric or nitric acid at temperature not below 70 C and excess pressure up to 15 atm, process being performed in presence of hydrogen peroxide or glucose. EFFECT: improved procedure. 2 cl

Similar patents RU2092602C1

Title	Year	Author	Number
METHOD OF EXPLOSION OF MONACTIVES CONCENTRATE	2016	Shagalov Vladimir Vladimirovich Egorov Nikolaj Borisovich Sobolev Vasilij Igorevich	RU2620229C1
METHOD FOR OPENING OF MONAZITE CONCENTRATE	2002	Kosenko Viktor Pavlovich Zhukov Valerij Timofeevich Pekhov Geliodor Fedorovich Kazantsev Valerij Nikolaevich	RU2242528C2
METHOD OF PROCESSING OF FERROUS RARE-EARTH PHOSPHATIC ORES	2013	Kuz'Min Vladimir Ivanovich Shabanov Vasilij Filippovich Kuz'Min Dmitrij Vladimirovich	RU2551332C1
METHOD OF DECOMPOSING MONAZITE	2004	Nizov Vasilij Aleksandrovich Obabkov Nikolaj Vasil'Evich Smirnov Aleksej Leonidovich Mikheev Anatolij Aleksandrovich Terent'Ev German Dmitrievich Smetannikov Vladimir Petrovich Kosynkin Valerij Dmitrievich Leont'Ev Vladimir Fedorovich	RU2331681C2
METHOD OF PROCESSING MONAZITE CONCENTRATE	2013	Akimov Dmitrij Vasil'Evich D'Jachenko Aleksandr Nikolaevich Egorov Nikolaj Borisovich Kiselev Aleksandr Dmitrievich Larin Valerij Konstantinovich	RU2549412C1
METHOD FOR PROCESSING MONAZITE	2016	Muslimova Aleksandra Valerevna Molokov Petr Borisovich Rusakov Igor Yurevich Bujnovskij Aleksandr Sergeevich	RU2633859C1
METHOD OF PROCESSING OF IRON-CONTAINING MONAZITE CONCENTRATES	2014	Goncharov Anatolij Aleksandrovich Melnichenko Evgenija Ivanovna Kovalenko Denis Valerevich	RU2576978C1
METHOD OF MONAZITE RECYCLING	2005	Val'Kov Aleksandr Vasil'Evich Stepanov Sergej Illarionovich Sergievskij Valerij Vladimirovich Chekmarev Aleksandr Mikhajlovich	RU2323989C2
METHOD OF PREPARING CERIUM CONCENTRATE	1997	Chub A.V. Gorshkov A.V. Kiselev V.A. Shchelkonogov A.A. Krivoruchko S.L.	RU2143399C1
METHOD OF PROCESSING MONAZITE RAW MATERIALS	2017	Sofronov Vladimir Leonidovich Muslimova Aleksandra Valerevna Rusakov Igor Yurevich Makaseev Yurij Nikolaevich Molokov Petr Borisovich Shamin Viktor Ivanovich Makaseev Andrej Yurevich	RU2667932C1

RU 2 092 602 C1

Authors

Chub A.V.

Drobot D.V.

Krivoruchko S.L.

Mel'Nikova E.G.

Dates

1997-10-10—Published

1996-03-21—Filed