| Patent Number |
Title Of Patent |
Date Issued |
| 4891204 |
Purification of aluminum chloride |
January 2, 1990 |
| Aluminium chloride contaminated with iron chloride is purified by contacting it in vapor form with a bed of particles of aluminium metal interspersed with particles of a chemically inert material. The efficiency of the process may be maintained by acid treating, drying and recycling |
| 4652434 |
Chlorination of ores containing alkali or alkaline earth values |
March 24, 1987 |
| The invention pertains to an entrained-downflow chlorination process of fine metalliferous ores particularly containing alkali and/or alkaline earth metals greater than about 0.3% by weight as the oxide. The process includes a quenching step following the chlorination step where the |
| 4624843 |
Recovery of chlorine |
November 25, 1986 |
| Chlorine may be recovered from residues from the fluidized bed chlorination of iron-containing metalliferous oxidic materials, such as ilmenite, bauxite, chromite, wolframite, scheelite, tantalite or columbite, the residues containing condensed iron chloride and blow-over bed solids, by |
| 4619815 |
Chlorination of iron-containing metaliferous material |
October 28, 1986 |
| The process is directed to a fluidized bed chlorination of iron containing metaliferous materials to simultaneously produce a quantity of titanium beneficiate and a quantity of titanium tetrachloride. The process is controlled by maintaining the bed temperature between about 600.degree. |
| 4576636 |
Process for beneficiating oxidic ores |
March 18, 1986 |
| A process for the beneficiation of an iron-containing material is carried out by first chlorinating the iron-containing material. Oxidation of ferrous chloride in the effluent gas from the chlorination is carried out under controlled conditions of oxygen supply so that more than 50% but |
| 4519987 |
Treatment of oxidic materials |
May 28, 1985 |
| In the fluidized bed chlorination of oxidic materials, for example minerals such as bauxite, tantalite, columbite, wolframite or scheelite, the separation of metal values giving vaporous chlorides at the reaction temperature is enhanced by maintaining a zone substantially free of chl |
| 4288650 |
Electrical insulation device |
September 8, 1981 |
| Electrical insulation may be provided between two parts of a structure intended for exposure to high temperature radiation from a heat source, e.g. the interior wall of an electrical discharge furnace, by providing slot in the structure positioned so that the base of the slot cannot view |
| 4279640 |
Process for upgrading iron-containing materials |
July 21, 1981 |
| Material containing iron in combination with chromium, such as chromite ore or sand, may be upgraded by removing at least some iron by a fluidized bed process in which iron is chlorinated to ferrous chloride in the presence of carbon and the ferrous chloride vapor removed. Selectivity of |
| 4246022 |
Processing metal chlorides |
January 20, 1981 |
| Metal may be recovered from metal chlorides, for example a mixed metal chloride residue from the fluidized bed chlorination of a titaniferous ore in the presence of carbon to produce titanium tetrachloride by heating, in the presence of a scavenging agent, which may comprise a combinatio |
