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2 663 918

(13)

(51)

IPC

C25C5/02(2006-01-01)

C25C1/16(2006-01-01)

C22B19/28(2006-01-01)

C22B19/30(2006-01-01)

(21) (22)

Application

2017130974, 2017-09-01

(24)

Start date

2017-09-01

(22)

Actual filing date

2017-09-01

(45)

Published

2018-08-13

(72)

Inventor

Kozlov Pavel AleksandrovichYakornov Sergej AleksandrovichPanshin Andrej MikhajlovichIzbrekht Pavel AleksandrovichMakhmudov Dzhakhangir IskandarovichZatonskij Aleksandr ValentinovichIvakin Dmitrij Anatolevich

(73)

Holder

Publichnoe Aktsionernoe Obshchestvo Tsinkovyj Zavod"

METHOD FOR PRODUCING A ZINC POWDER FROM ZINC-CONTAINING WASTES Russian patent published in 2018 - IPC C25C5/02 C25C1/16 C22B19/28 C22B19/30

Abstract RU 2663918 C1

FIELD: technological processes.

SUBSTANCE: invention relates to the production of zinc powder from zinc-containing wastes. Method includes leaching of zinc-containing wastes, electrochemical precipitation of the zinc powder in the form of a precipitate from an alkaline electrolyte, and washing the precipitate. As an alkaline electrolyte, an alkaline solution obtained after leaching the zinc-containing wastes with the addition of technical sodium lignosulfonate obtained as a waste of pulp and paper production in an amount of 900–1,500 g/t of zinc powder is used as the alkaline electrolyte.

EFFECT: increase in the activity of the resulting zinc powder is provided.

1 cl, 1 tbl, 1 ex

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RU 2 663 918 C1

Authors

Kozlov Pavel Aleksandrovich

Yakornov Sergej Aleksandrovich

Panshin Andrej Mikhajlovich

Izbrekht Pavel Aleksandrovich

Makhmudov Dzhakhangir Iskandarovich

Zatonskij Aleksandr Valentinovich

Ivakin Dmitrij Anatolevich

Dates

2018-08-13—Published

2017-09-01—Filed