Production of titanium tetrachloride
US4046853A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1976 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Jun 15, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The simultaneous chlorination of the iron and titanium values in an iron containing titaniferous ore such as ilmenite is advantageously conducted to convert the iron values to ferrous chloride but the resulting gaseous effluent is difficult to process to recover the titanium tetrachloride. The iron values in the effluent are partially oxidized according to the equation EQU 3FeCl.sub.2 + 3/4O.sub.2 .fwdarw. 1/2Fe.sub.2 O.sub.3 + 2FeCl.sub.3 thereby reducing the vapor partial pressure of the ferrous chloride while maintaining the presence of some ferrous chloride to scavenge any chlorine emitted from the chlorination stage. The residual gaseous iron chlorides are condensed and chlorine-free titanium tetrachloride may be recovered from the remaining gases. If chlorine-free titanium tetrachloride is not required the mixture of gases resulting from the partial oxidation are reduced in temperature of from 500.degree. C to 800.degree. C and above the dewpoint of the residual ferrous chloride which ferrous chloride may be oxidized directly in the gas phase. This embodiment of the process simplifies the problem of chlorine recovery and is particularly suitable for use in a cyclic process in…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.