US1163911A - Electrolysis. - Google Patents
Electrolysis. Download PDFInfo
- Publication number
- US1163911A US1163911A US4961215A US4961215A US1163911A US 1163911 A US1163911 A US 1163911A US 4961215 A US4961215 A US 4961215A US 4961215 A US4961215 A US 4961215A US 1163911 A US1163911 A US 1163911A
- Authority
- US
- United States
- Prior art keywords
- electrolysis
- electrolyte
- zinc
- compound
- finely divided
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
Definitions
- the principal object of the present invention is to maintain the free ion concentration, of anelectrolyte favorable for the disposition of ions during electrolysis. According to my invention this objectis accomplished by the presence in the electrolyte of a compound insoluble in the electrolyte, and which with the ions set free by electrolysis forms a passive compound.
- the proportion of calcium compound added should be sufiicient to take up the liberated ions or slightly in excess. My process does not require any marked departure from ordinary practice concerning current density and the like, nor are diaphragms necessary. Since the added compound is insoluble in the electrolyte, it i is obvious that it should not be allowed to settle, and one Way of preventing this is to keep the electrolyte agitated as by stir-- ring it.
Description
' bine With thecalcium forming, in the first CLARENCE A. HALL, OF MOUNT AIRY, PENNSYLVANIA.
nLncrnoLYsIs.
Specification of Letters Patent. I Patented Dec. 14}, 19 115. 7
Ho Drawing. Application filed March 6, 1913, Serial No. 752,378. Renewed September 8, 1915. Serial No. 49,612. Y
To all whom it may concern:
Be it known that I, CLARENCE A. HALL, a citizen of the United States, residing at Mount Airy, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Electrolysis, of which the following is a specification.
The principal object of the present invention is to maintain the free ion concentration, of anelectrolyte favorable for the disposition of ions during electrolysis. According to my invention this objectis accomplished by the presence in the electrolyte of a compound insoluble in the electrolyte, and which with the ions set free by electrolysis forms a passive compound.
For the sake of a further description of the invention it will be described in connection with the electrolytic recovery of zinc from a zinc sulfate solution or a zinc chlorid solution. In either case there is added to the .solution finely divided calcium carbonate. During electrolysis the calcium carbonate-is decomposed by the liberated ions which cominstance, calcium sulfate, which is sparingly soluble, and,-in the second instance, calcium chlorid, which is soluble. These calcium compounds are electrically inert in this electrolyte. During electrolysis commercial metallic zinc is deposited as distinguished from mossy zinc, such as results from electrolysis as heretofore attempted. The proportion of calcium compound added should be sufiicient to take up the liberated ions or slightly in excess. My process does not require any marked departure from ordinary practice concerning current density and the like, nor are diaphragms necessary. Since the added compound is insoluble in the electrolyte, it i is obvious that it should not be allowed to settle, and one Way of preventing this is to keep the electrolyte agitated as by stir-- ring it.
While the invention is principally applicable to the electrolytic deposition of 'zinc,
because commercial zinc is recovered, still the invention is not necessarily confined to that use.
What I claim as new and desire to secure by Letters Patent is: V
1. The process of maintaining the free anion concentration of an electrolyte constant during electrolysis which consists in carrying on electrolysis in the presence of a solid finely divided substance which is in- Soluble in the absence of the current and which in the presence of the current combines With the liberated anions, forming a compound electrically inert in the electrolyte,'and continually and thoroughly agitatlyte during electrolysis.
2. The process of maintaining the free anion concentration of a zinc electrolyte coning the finely divided substance and electrocarrying on electrolysis in the presence of a finely divided substance which is insoluble in the absence of the current'and which in the presence of the current combines with the liberated anions, forming a compound electrically inert in the electrolyte, and continually and thoroughly agitating the finely divided substance and electrolyte during electrolysis.
In testimony whereof I have hereunto signed my name.
I CLARENCE A. HALL. Witnesses:
CLIFFORD K. CASSEL,
FRANK E. FRENCH.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4961215A US1163911A (en) | 1915-09-08 | 1915-09-08 | Electrolysis. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4961215A US1163911A (en) | 1915-09-08 | 1915-09-08 | Electrolysis. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1163911A true US1163911A (en) | 1915-12-14 |
Family
ID=3231938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US4961215A Expired - Lifetime US1163911A (en) | 1915-09-08 | 1915-09-08 | Electrolysis. |
Country Status (1)
Country | Link |
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US (1) | US1163911A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2539681A (en) * | 1948-10-26 | 1951-01-30 | American Smelting Refining | Process for the electrodeposition of zinc |
US2847373A (en) * | 1953-11-12 | 1958-08-12 | Wean Engineering Co Inc | Electroplating zinc on basis metal |
US3152973A (en) * | 1960-07-26 | 1964-10-13 | Udylite Corp | Electrodeposition of lustrous nickel |
-
1915
- 1915-09-08 US US4961215A patent/US1163911A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2539681A (en) * | 1948-10-26 | 1951-01-30 | American Smelting Refining | Process for the electrodeposition of zinc |
US2847373A (en) * | 1953-11-12 | 1958-08-12 | Wean Engineering Co Inc | Electroplating zinc on basis metal |
US3152973A (en) * | 1960-07-26 | 1964-10-13 | Udylite Corp | Electrodeposition of lustrous nickel |
US3152971A (en) * | 1960-07-26 | 1964-10-13 | Udylite Corp | Electrodeposition of fine-grained lustrous nickel |
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