GB237308A - Improved treatment of lead chloride or basic chloride to convert it into other lead compounds, and application thereof to the winning of lead from ores, residues and the like - Google Patents
Improved treatment of lead chloride or basic chloride to convert it into other lead compounds, and application thereof to the winning of lead from ores, residues and the likeInfo
- Publication number
- GB237308A GB237308A GB247224A GB247224A GB237308A GB 237308 A GB237308 A GB 237308A GB 247224 A GB247224 A GB 247224A GB 247224 A GB247224 A GB 247224A GB 237308 A GB237308 A GB 237308A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- chloride
- ammonia
- solution
- ores
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
Ammonium chloride is produced by converting lead chloride into carbonate by means of ammonia and carbon dioxide. The lead chloride or a double chloride of lead such as lead ammonium chloride is suspended in a solution of ammonia and carbon dioxide is passed in. The first part of the reaction may be effected at about 30 DEG C. and the later part at a higher temperature such as 40-50 DEG C. Specification 3082/77 is referred to.ALSO:Lead chloride is converted into a carbonate by suspending in aqueous ammonia and passing in carbon dioxide. The lead chloride may be obtained by known methods from ores, concentrates &c. and is preferably used in finely divided form obtained for instance by grinding the crystals or by precipitation of a solution of lead chloride in a chloride solution by dilution with a large quantity of water; or a double salt such as lead-ammonium chloride may be used as such. The lead chloride may also be obtained by the treatment of metallic lead from residues with acid brine, hydrochloric acid, ferric chloride, or the like. The ammonium chloride in the mother-liquor may be crystallized by cooling and may be employed for the extraction of lead chloride from ores or may be heated with lime to recover the ammonia and obtain calcium chloride solution for treatment of lead ore. The conversion of the lead chloride into carbonate may be effected at about 30 DEG C. during the first part of the carbonation, and, when less ammonia remains free, at a higher temperature such as 40-50 DEG C. The carbonation may be effected on the counter-current principle. The mother-liquor containing ammonium chloride, ammonia, and carbon dioxide may be divided into two portions, one, called the nucleus solution, being made up to its original quantity with water, ammonia, and lead chloride for the next operation, while the other is treated to recover its constituents. In an example, zinc lead sulphide ores are roasted to sulphate the metals, the zinc is leached out as with a solution of sulphuric acid, and the residue, containing lead and silver sulphates, is treated with a hot chloride solution containing a little acid to extract the lead and silver. The silver is recovered in known manner, and the lead chloride is separated out by cooling and treated as above described. Specification 3082/77 is referred to. The Provisional Specification refers to Specification 210,463, [Class 2 (iii), Dyes &c.].
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB247224A GB237308A (en) | 1924-01-30 | 1924-01-30 | Improved treatment of lead chloride or basic chloride to convert it into other lead compounds, and application thereof to the winning of lead from ores, residues and the like |
FR592512D FR592512A (en) | 1924-01-30 | 1925-01-30 | Process for the treatment of lead chloride or basic lead chloride, with a view to its transformation into other lead compounds, and application of the process to the extraction of lead from ores, residues, etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB247224A GB237308A (en) | 1924-01-30 | 1924-01-30 | Improved treatment of lead chloride or basic chloride to convert it into other lead compounds, and application thereof to the winning of lead from ores, residues and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB237308A true GB237308A (en) | 1925-06-30 |
Family
ID=9740170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB247224A Expired GB237308A (en) | 1924-01-30 | 1924-01-30 | Improved treatment of lead chloride or basic chloride to convert it into other lead compounds, and application thereof to the winning of lead from ores, residues and the like |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR592512A (en) |
GB (1) | GB237308A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2695842A (en) * | 1951-09-04 | 1954-11-30 | Chemical Construction Corp | Recovery of copper from leach liquors containing zinc and lead |
-
1924
- 1924-01-30 GB GB247224A patent/GB237308A/en not_active Expired
-
1925
- 1925-01-30 FR FR592512D patent/FR592512A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2695842A (en) * | 1951-09-04 | 1954-11-30 | Chemical Construction Corp | Recovery of copper from leach liquors containing zinc and lead |
Also Published As
Publication number | Publication date |
---|---|
FR592512A (en) | 1925-08-04 |
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