Control method for large scale batch reduction of zirconium tetrachloride
US4511399A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1983 |
| Grant date | Apr 16, 1985 |
| Priority date | — |
| Expiry date | Oct 4, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S266/905
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This is a control method for large scale batch reduction of zirconium tetrachloride to zirconium metal. Solid zirconium tetrachloride is fed at least periodically into a sublimer and the sublimer heated to vaporize the zirconium tetrachloride. The vaporized zirconium tetrachloride is fed from the sublimer to a reduction vessel and a measurement is made indicative of this feed (e.g., the flow rate or the pressure in the reduction vessel). A condenser is used to conjunction with said sublimer and the temperature of the condenser is controlled to control the feed of the vaporized zirconium tetrachloride. Preferably, a flow restriction is used between the sublimer and the condenser to provide improved control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.