GB239257A - Conversion of lead sulphate into lead carbonate - Google Patents
Conversion of lead sulphate into lead carbonateInfo
- Publication number
- GB239257A GB239257A GB1110924A GB1110924A GB239257A GB 239257 A GB239257 A GB 239257A GB 1110924 A GB1110924 A GB 1110924A GB 1110924 A GB1110924 A GB 1110924A GB 239257 A GB239257 A GB 239257A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- liquor
- lead
- ammonia
- effected
- 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
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G21/00—Compounds of lead
- C01G21/14—Carbonates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Ammonium sulphate is produced during the conversion of lead sulphate into lead carbonate. The lead sulphate is agitated with excess of ammonia, and carbon dioxide is introduced. The treatment with carbon dioxide may be effected simultaneously with the ammonia treatment, or the carbon dioxide may be wholly or in part dissolved in the ammonia, or the carbon dioxide treatment may be effected after the lead hydroxide has been formed and while it is suspended in its mother-liquor, or after it has been separated from its mother-liquor. The carbonation may be effected first at a comparatively low temperature such as 30 DEG C., and then at a higher temperature, say 40-50 DEG C. or higher, 70 DEG C. being mentioned. The reaction may be effected in counter-current, and the ammonium sulphate liquor may be so strong as to be ready for crystallization. Ammonia may be added during the carbonation to replace that carried away by the gases. When the reaction is finished, the mother-liquor is divided, one part, called the nucleus liquor, being made up by the addition of ammonia, water, and lead sulphate for another operation, while the other part, called the residual liquor, is treated to recover the constituents, for instance by distilling with lime. The process may be combined with processes in which lead is extracted from ores as sulphate or chloride. In the latter case the chloride is converted into sulphate as described in Specification 239,559, [Class 1 (iii), Oxides &c., Metallic].ALSO:Lead sulphate is converted into carbonate by agitation with ammonia solution in excess so as to produce the hydrate and passing carbon dioxide, or gases containing it through the suspension until the conversion is effected. The treatment with carbon dioxide may be effected simultaneously with the ammonia treatment, or the carbon dioxide may be wholly or in part dissolved in the ammonia, or the carbon dioxide treatment may be effected after the lead hydroxide has been formed and while it is suspended in its mother-liquor or after it has been separated from its mother-liquor. The carbonation may be effected first at a comparatively low temperature such as 30 DEG C. and then at a higher temperature, say 40-50 DEG C. or higher, 70 DEG C. being mentioned. The reaction may be effected in counter-current, the lead sulphate being first treated with a liquid in which part of the ammonia has already been converted into ammonium sulphate and then with fresh liquor, and the ammonium sulphate liquor may be so strong as to be ready for crystallization. Ammonia may be added during the carbonation to replace that carried away by the gases. When the reaction is finished and the lead carbonate is separated, the mother-liquor is divided, one part, called the nucleus liquor, being made up by the addition of ammonia, water, and lead sulphate for another operation, while the other part, called the residual liquor is treated to recover the constituents, for instance by distilling with lime. The process may be combined with processes in which lead is extracted from its ores &c. as sulphate or chloride. In the latter case the chloride is converted into sulphate for instance by treatment with zinc sulphate as described in Specification 239,559.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1110924A GB239257A (en) | 1924-05-05 | 1924-05-05 | Conversion of lead sulphate into lead carbonate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1110924A GB239257A (en) | 1924-05-05 | 1924-05-05 | Conversion of lead sulphate into lead carbonate |
Publications (1)
Publication Number | Publication Date |
---|---|
GB239257A true GB239257A (en) | 1925-09-07 |
Family
ID=9980204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1110924A Expired GB239257A (en) | 1924-05-05 | 1924-05-05 | Conversion of lead sulphate into lead carbonate |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB239257A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008087684A1 (en) | 2007-01-17 | 2008-07-24 | Millbrook Lead Recycling Technologies Limited | Recovery of lead in form of high purity lead carbonates from spent lead batteries incl. electrode paste |
CN112779414A (en) * | 2020-12-17 | 2021-05-11 | 襄阳远锐资源工程技术有限公司 | Lead plaster desulfurization process and desulfurization equipment thereof |
-
1924
- 1924-05-05 GB GB1110924A patent/GB239257A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008087684A1 (en) | 2007-01-17 | 2008-07-24 | Millbrook Lead Recycling Technologies Limited | Recovery of lead in form of high purity lead carbonates from spent lead batteries incl. electrode paste |
CN112779414A (en) * | 2020-12-17 | 2021-05-11 | 襄阳远锐资源工程技术有限公司 | Lead plaster desulfurization process and desulfurization equipment thereof |
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