Method for producing high density nickel powder
US10766072B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2016 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Mar 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B5/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a method for producing high density nickel powder particularly having a median diameter of 100 to 160 μm by controlling a particle size of nickel powder. The method includes: performing an initial operation by charging a pressure vessel equipped with a stirrer with a nickel ammine complex solution containing nickel in the concentration of 5 to 75 g/L together with seed crystals in the amount of 5 to 200 g per liter of the solution, increasing the temperature of the solution, and performing a reduction reaction with hydrogen by blowing hydrogen gas into the pressure vessel, thereby obtaining the nickel contained in the nickel ammine complex solution as nickel powder; and thereafter, performing a specified operation A repeatedly at least once to obtain the nickel powder having the median diameter of 100 to 160 μm and a bulk density of 1 to 4.5 g/cm3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.