FIELD: physical chemistry.
SUBSTANCE: invention relates to the production of zinc powder from zinc-containing raw materials. The method involves the electrochemical reduction of zinc from a zinc-containing compound in an alkaline electrolyte. Zinc oxide is used as a zinc-containing compound, the electrochemical reduction is carried out by direct contact of the solid phase of zinc oxide with the cathode, while the cathode current density is 4000-5000 A/m2, and the alkali content in the electrolyte during the electrolysis is maintained in the range of 30-70 g/l. To increase the speed of the process, 5-10% of the zinc powder by weight of the zinc oxide is added to the zinc oxide before electrolysis.
EFFECT: method makes it possible to increase the specific rate of zinc reduction and to obtain a fine powder.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING ZINC POWDER FROM ZINC-CONTAINING WASTES | 2020 |
|
RU2743567C1 |
| METHOD OF PRODUCING MICROSTRUCTURED POWDERS OF TITANIUM | 2019 |
|
RU2731950C2 |
| METHOD FOR PRODUCING A ZINC POWDER FROM ZINC-CONTAINING WASTES | 2017 |
|
RU2663918C1 |
| METHOD FOR MANUFACTURING OF DRY-CHARGED ZINC ELECTRODE FOR CURRENT SOURCES OF INTENSIVE ACTION | 2014 |
|
RU2548665C1 |
| PROCESS OF FORMATION OF VOLUMETRIC-POROUS LAYER OF METAL WITH OPEN POROSITY ON CURRENT-CONDUCTING BACKING | 1999 |
|
RU2150533C1 |
| METHOD FOR EXTRACTION OF PLATINUM METALS FROM CATALYSTS | 2021 |
|
RU2778336C1 |
| METHOD OF PRODUCING GALLIUM FROM ALKALINE-ALUMINATE SOLUTIONS OF ALUMINIUM PRODUCTION | 2016 |
|
RU2636337C2 |
| METHOD FOR APPLICATION OF ZINC COATINGS | 2009 |
|
RU2389828C1 |
| PROCESS OF EXTRACTION OF ZINC FROM BATHS FOR RECOVERY OF CHLORINE-AMMONIATE ELECTROLYTES | 1993 |
|
RU2080415C1 |
| RHODIUM REFINING METHOD | 2022 |
|
RU2797800C1 |
