Patent US4113584A successfully refreshed from Google Patents.
US4113584A
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Method to produce multivalent metals from fused bath and metal electrowinning feed cathode apparatus
Assignee: Dow Chemical Co
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Filing: 1976-09-13
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Granted: 1978-09-12
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Expires: 1996-09-13
Abstract
Abstract Feed cathode for an electrolytic cell with a feed conduit suited to pass a metal compound therethrough from a source to an electrolyte in the cell. The feed cathode includes a member surrounding and substantially entirely enclosing at least an outlet of the conduit. The member is at least partially formed of an electrically conductive foraminous body suited to pass the electrolyte and ions of a multivalent metal compound therethrough. Preferably, the foraminous body has an electrical coefficient of greater than zero to about 1 and a flow coefficient of from about 0.1 to about 300.
Inventors
- 👤 David R. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:05
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/26; C25C3/28; C25C7/00; C25C7/005; C25C7/04
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
136 words
In an electrolytic cell for producing a multivalent metal from a compound of the metal in a fused halide bath with an anode disposed in an anode compartment, a deposition cathode disposed in a cathode compartment spaced apart from the anode compartment by a porous diaphragm, and a multivalent metal ion feed means disposed in the cathode compartment, the improvement comprising a feed conduit for the metal compound with at least one inlet and at least one outlet for the compound, the outlet being enclosed by an electrically conductive foraminous body electrically connected to a negative power source and spaced apart from said outlet, the foraminous body suited to pass the metal ions and the molten bath and to conduct sufficient electrical energy to reduce the metal ions from a higher valence to a lower valence.
Claim 2
Dependent Claim
136 words
In an electrolytic cell for producing a multivalent metal from a compound of the metal in a fused halide bath with an anode disposed in an anode compartment, a deposition cathode disposed in a cathode compartment spaced apart from the anode compartment by a porous diaphragm, and a multivalent metal ion feed means disposed in the cathode compartment, the improvement comprising a feed conduit for the metal compound with at least one inlet and at least one outlet for the compound, the outlet being enclosed by an electrically conductive foraminous body electrically connected to a negative power source and spaced apart from said outlet, the foraminous body suited to pass the metal ions and the molten bath and to conduct sufficient electrical energy to reduce the metal ions from a higher valence to a lower valence.
Claim 3
Dependent Claim
35 words
The improvement of claim 1 wherein the foraminous body has an electrical coefficient of greater than zero up to about 1 and a flow coefficient within the range of from about 0.1 to about 300.
Claim 4
Dependent Claim
20 words
The improvement of claim 1 wherein the electrical coefficient is within the range of from about 0.1 to about 1.
Claim 5
Dependent Claim
21 words
The electrolytic cell of claim 1 including an electrical insulating element positioned to space apart said conduit from said enclosing member.
Claim 6
Dependent Claim
162 words
In an electrolytic cell for producing a multivalent metal from a compound of the metal in a fused halide bath with an anode disposed in an anode compartment, a deposition cathode disposed in a cathode compartment spaced apart from the anode compartment by a porous diaphragm, and a multivalent metal ion feed means disposed in the cathode compartment, the improvement comprising a feed means with a feed conduit for the metal compound with at least one inlet and at least one outlet for the compound, the outlet being enclosed by a member surrounding and substantially entirely enclosing at least the outlet of said conduit, said member being at least partially formed of an electrically conductive foraminous body electrically connected to a negative power source and spaced apart from said outlet, the foraminous body suited to pass the metal ions and the molten bath and to conduct sufficient electrical energy to reduce the metal ions from a higher valence to a lower valence.
Claim 7
Dependent Claim
162 words
In an electrolytic cell for producing a multivalent metal from a compound of the metal in a fused halide bath with an anode disposed in an anode compartment, a deposition cathode disposed in a cathode compartment spaced apart from the anode compartment by a porous diaphragm, and a multivalent metal ion feed means disposed in the cathode compartment, the improvement comprising a feed means with a feed conduit for the metal compound with at least one inlet and at least one outlet for the compound, the outlet being enclosed by a member surrounding and substantially entirely enclosing at least the outlet of said conduit, said member being at least partially formed of an electrically conductive foraminous body electrically connected to a negative power source and spaced apart from said outlet, the foraminous body suited to pass the metal ions and the molten bath and to conduct sufficient electrical energy to reduce the metal ions from a higher valence to a lower valence.
Claim 8
Dependent Claim
35 words
The cell of claim 5 wherein the foraminous body has an electrical coefficient of greater than zero up to about 1 and a flow coefficient within the range of from about 0.1 to about 300.
Claim 9
Dependent Claim
20 words
The cell of claim 6 wherein the electrical coefficient is within the range of from about 0.1 to about 1.
Claim 10
Dependent Claim
19 words
The cell of claim 6 wherein the body includes a nickel screen as a substrate and cobalt plate thereon.
Claim 11
Dependent Claim
19 words
The cell of claim 6 wherein the body includes a nickel screen as substrate and a nickel plate thereon.
Claim 12
Dependent Claim
20 words
The cell of claim 6 wherein the electrical coefficient is within the range of from about 0.1 to about 0.6.
Claim 13
Dependent Claim
20 words
The cell of claim 6 wherein the flow coefficient is within the range of from about 0.2 to about 30.
Claim 14
Dependent Claim
20 words
The cell of claim 11 wherein the electrical coefficient is within the range of from about 0.1 to about 0.6.
Claim 15
Dependent Claim
20 words
The cell of claim 6 wherein the flow coefficient is within the range of from about 0.2 to about 8.
Claim 16
Dependent Claim
20 words
The cell of claim 13 wherein the electrical coefficient is within the range of from about 0.1 to about 0.6.
Claim 17
Dependent Claim
19 words
The cell of claim 14 wherein the body includes a nickel screen as a substrate and cobalt plate thereon.
Claim 18
Dependent Claim
19 words
The cell of claim 13 wherein the body includes a nickel screen as substrate and a nickel plate thereon.
Claim 19
Independent Claim
149 words
A method to electrolytically produce a multivalent metal from a compound of the metal in a fused halide electrolyte in an electrolytic cell comprising: (a) feeding the multivalent metal compound to a feed cathode including a multivalent metal compound feed conduit with at least one outlet to pass the metal compound therethrough from a metal compound source to the electrolyte, a member surrounding and substantially entirely enclosing at least the outlet of the conduit, the member being at least partially formed of an electrically conductive foraminous body; (b) impressing a negative electric potential on the foraminous body to at least partially reduce multivalent metal ions from the compound from a higher valence to a lower valence; (c) impressing an electric potential between an anode and a deposition cathode in the electrolytic cell to release a halogen at the anode and to deposit the multivalent metal at the deposition cathode.
Claim 20
Independent Claim
149 words
A method to electrolytically produce a multivalent metal from a compound of the metal in a fused halide electrolyte in an electrolytic cell comprising: (a) feeding the multivalent metal compound to a feed cathode including a multivalent metal compound feed conduit with at least one outlet to pass the metal compound therethrough from a metal compound source to the electrolyte, a member surrounding and substantially entirely enclosing at least the outlet of the conduit, the member being at least partially formed of an electrically conductive foraminous body; (b) impressing a negative electric potential on the foraminous body to at least partially reduce multivalent metal ions from the compound from a higher valence to a lower valence; (c) impressing an electric potential between an anode and a deposition cathode in the electrolytic cell to release a halogen at the anode and to deposit the multivalent metal at the deposition cathode.
Claim 21
Dependent Claim
26 words
The method of claim 17 wherein step (b) is carried out without depositing and retaining a substantial amount of the multivalent metal on the foraminous body.
Claim 22
Dependent Claim
11 words
The method of claim 17 wherein the multivalent metal is titanium.
Claim 23
Dependent Claim
37 words
The method of claim 19 wherein the foraminous body has an electrical coefficient within the range of from about 0.1 to about 1 and a flow coefficient within the range of from about 0.1 to about 300.
Claim 24
Dependent Claim
11 words
The method of claim 20 wherein the compound is titanium tetrachloride.
Claim 25
Dependent Claim
20 words
The method of claim 20 wherein the flow coefficient is within the range of from about 0.2 to about 8.
Claim 26
Dependent Claim
20 words
The method of claim 22 wherein the electrical coefficient is within the range of from about 0.1 to about 0.6.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |