GB259118A - Process for the electrolytic separation of metallic chromium - Google Patents
Process for the electrolytic separation of metallic chromiumInfo
- Publication number
- GB259118A GB259118A GB7668/26A GB766826A GB259118A GB 259118 A GB259118 A GB 259118A GB 7668/26 A GB7668/26 A GB 7668/26A GB 766826 A GB766826 A GB 766826A GB 259118 A GB259118 A GB 259118A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- chromium
- electrolyte
- acid
- anodes
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/10—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of chromium or manganese
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
259,118. Appel, R. Nov. 26, 1925, [Convention date]. Chromium, obtaining; coloured surfaces, producing; electrolytes, heating. - The electrolyte consists of a dilute solution of chromic acid or a chromate to which is added a small quantity, e.g. about 0.5 g.m., per litre of sodium sulphate, and the anodes are of compact or dense lead, e.g. rolled lead. Anodes of cast lead are not suitable. A suitable electrolyte contains 50 gms. of chromic acid or chromate per litre. The electrolyte should be rendered slightly acid, if not already so, by the addition of a small quantity of sulphuric acid; otherwise a colloidal oxide of chromium may be deposited. The temperature is maintained at 35-40‹ C. bv an electric heater. A voltage of 3-4 and a current density of 0.6 amps. per sq. cm. are employed. Deposits of various colours and degrees of polish may be obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE259118X | 1925-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB259118A true GB259118A (en) | 1926-10-07 |
Family
ID=5966795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7668/26A Expired GB259118A (en) | 1925-11-26 | 1926-03-19 | Process for the electrolytic separation of metallic chromium |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB259118A (en) |
-
1926
- 1926-03-19 GB GB7668/26A patent/GB259118A/en not_active Expired
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