US3900312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of aluminum chloride by manganese
Assignee: Toth Aluminum Corp
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Filing: 1972-10-16
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Granted: 1975-08-19
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Expires: 1992-10-16
Abstract
Abstract A method of producing aluminum in essentially elemental form wherein aluminum chloride in liquid phase is reacted with manganese in solid phase. The reaction is carried out in a vessel at a pressure and a relatively low temperature such that the reactants will maintain the respective phases. The manganese reduces the liquid aluminum chloride and forms essentially elemental aluminum and manganese chloride. The temperature range is between 180*-600*C and the pressure range is 15-450 psia.
Inventors
- 👤 John Christopher Terry
- 👤 Alfred Lippman
- 👤 Roger Frank Sebenik
- 👤 Jr Harry Gordon Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:05
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1263; C22B34/1277; C22B21/00; C22B21/0038; C22B21/0053; C22B21/0061; C22B34/1268; C22B34/1272; C22B5/00; C22B5/02; C22B5/04; C22B5/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
A PROCESS FOR PRODUCING ALUMINUM IN ESSENTIALLY ELEMENTAL FORM COMPRISING THE STEPS OF PROVIDING ALUMINUM CHLORIDE, WHICH CHLORIDE IS IN A LIQUID PHASE, PROVIDING ELEMENTAL MANGANESE IN SOLID PHASE, REACTING SAID LIQUID ALUMINUM CHLORIDE AND ELEMENTAL MANGANESE IN A VESSEL AT A PRESSURE AND AT A TEMPERATURE UP TO 350*C AT WHICH THEY WILL MAINTAIN THEIR RESPECTIVE PHASES, THE ELEMENTAL MANGANESE REDUCING THE
Claim 2
Dependent Claim
63 words
A PROCESS FOR PRODUCING ALUMINUM IN ESSENTIALLY ELEMENTAL FORM COMPRISING THE STEPS OF PROVIDING ALUMINUM CHLORIDE, WHICH CHLORIDE IS IN A LIQUID PHASE, PROVIDING ELEMENTAL MANGANESE IN SOLID PHASE, REACTING SAID LIQUID ALUMINUM CHLORIDE AND ELEMENTAL MANGANESE IN A VESSEL AT A PRESSURE AND AT A TEMPERATURE UP TO 350*C AT WHICH THEY WILL MAINTAIN THEIR RESPECTIVE PHASES, THE ELEMENTAL MANGANESE REDUCING THE
Claim 3
Dependent Claim
25 words
The process according to claim 1 wherein the reaction is carried out in a temperature range between 180*-350*C and pressure range of from 14-450 psia.
Claim 4
Dependent Claim
62 words
The process according to claim 2 wherein the elemental manganese is in powder form, and including the further steps of introducing the liquid aluminum chloride and the powder elemental manganese from opposite ends of a reactor and passing the reactants in counter-current fashion to achieve continuous production of essentially elemental aluminum and manganese chloride; and removing the manganese chloride from the aluminum.
Claim 5
Dependent Claim
31 words
The process according to claim 2 wherein aluminum chloride is provided in excess of the stoichiometric amount so that sufficient aluminum chloride is present to dissolve the manganese chloride reaction product.
Claim 6
Dependent Claim
117 words
A process for producing aluminum in essentially elemental form comprising the steps of a. providing aluminum chloride in a liquid phase; b. providing elemental manganese in solid phase; c. providing an effective amount of at least one salt selected from the group consisting of NaCl, CaCl2, KCl, MgCl2 or BaCl2 to lower the vapor pressure of aluminum chloride and thereby maintain aluminum chloride in liquid phase at temperatures above 350*C; and d. reacting said liquid aluminum chloride and elemental manganese in a vessel at a pressure and at a temperature above 350*C and at which they will maintain their respective phases, the elemental manganese reducing the liquid aluminum chloride and forming essentially elemental aluminum and manganese chloride.
Claim 7
Dependent Claim
117 words
A process for producing aluminum in essentially elemental form comprising the steps of a. providing aluminum chloride in a liquid phase; b. providing elemental manganese in solid phase; c. providing an effective amount of at least one salt selected from the group consisting of NaCl, CaCl2, KCl, MgCl2 or BaCl2 to lower the vapor pressure of aluminum chloride and thereby maintain aluminum chloride in liquid phase at temperatures above 350*C; and d. reacting said liquid aluminum chloride and elemental manganese in a vessel at a pressure and at a temperature above 350*C and at which they will maintain their respective phases, the elemental manganese reducing the liquid aluminum chloride and forming essentially elemental aluminum and manganese chloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |