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2 500 480

(13)

(51)

IPC

B03D1/02(2006-01-01)

C01B31/00(2006-01-01)

C01B33/12(2006-01-01)

(21) (22)

Application

2012106061/05, 2012-02-20

(24)

Start date

2012-02-20

(22)

Actual filing date

2012-02-20

(45)

Published

2013-12-10

(72)

Inventor

Nemarov Aleksandr AlekseevichRzhechitskij Aleksandr EhdvardovichIvanov Nikolaj Arkad'EvichKondrat'Ev Viktor ViktorovichLebedev Nikolaj Valentinovich

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Tekhnicheskij Universitet" Vpo

METHOD FOR EXTRACTION OF NANO-SIZED PARTICLES FROM MAN-MADE WASTES BY FLOTATION Russian patent published in 2013 - IPC B03D1/02 C01B31/00 C01B33/12

Abstract RU 2500480 C2

FIELD: process engineering.

SUBSTANCE: invention can be used for extraction of silicon dioxide and carbon nano-sized particles from thermoelectric production gas cleaning sludge by flotation. Proposed method comprises thermal treatment of said wastes at 400-600°C. Obtained material is ground to particle size not over 10^-6m and repulped. Obtained suspension is aerated under conditions that allow formation of air bubbles with size equal to floatable particles. Note here that, in aeration, initial air bubbles in size not over 50·10^-6m are fed. Separation of foam product containing carbon nanoparticles and those of chamber product with silicon dioxide particles is performed in laminar mode of foam product efflux at outlet, foam layer height making at least 30·10^-3 m.

EFFECT: efficient separation, power savings.

10 cl, 8 dwg, 1tbl, 1 ex

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RU 2 500 480 C2

Authors

Nemarov Aleksandr Alekseevich

Rzhechitskij Aleksandr Ehdvardovich

Ivanov Nikolaj Arkad'Evich

Kondrat'Ev Viktor Viktorovich

Lebedev Nikolaj Valentinovich

Dates

2013-12-10—Published

2012-02-20—Filed