GB865306A - Metal recovery process - Google Patents
Metal recovery processInfo
- Publication number
- GB865306A GB865306A GB2181459A GB2181459A GB865306A GB 865306 A GB865306 A GB 865306A GB 2181459 A GB2181459 A GB 2181459A GB 2181459 A GB2181459 A GB 2181459A GB 865306 A GB865306 A GB 865306A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphide
- water
- alkaline
- coal
- sulphides
- 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
- C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
- C01G1/12—Sulfides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B41/00—Obtaining germanium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Metal sulphides which are insoluble in dilute acids, especially germanium sulphides, are recovered from alkaline coal combustion residues in a process comprising washing the residues with water, treating the resulting solution with a water-soluble sulphide, and acidifying, preferably to below pH 5, to precipitate the metal sulphides. The initial wash water may contain some or all of the water soluble sulphide, and the final acidified solution may be heated to below boiling, and preferably above 180 DEG F., to hasten the sulphide precipitation. The water-soluble sulphide is preferably an alkali or alkaline earth metal polysulphide. The preferred acid for adjusting the pH is hydrochloric acid, but sulphuric, phosphoric, nitric, and glacial acetic acids may also be employed. In the case of germanium, the amount of sulphide employed is preferably in an amount sufficient to add sulphur in an amount from 0.02% to 0.2% by weight of the original coal residue. If the coal residue is normally non-alkaline, an artificial alkaline residue suitable for processing may be obtained by adding alkali, for example soda ash, lime, potash, or caustic soda, to the coal prior to burning. Other metals values which may be recovered include antimony, arsenic, copper, lead, iron, aluminium, gallium, titanium, uranium, gold, tin, platinum, and cadmium. The sulphide precipitated may be freed from free sulphur by leaching, for example with carbon disulphide, or by distillation or controlled oxidation. The sulphide precipitate may be roasted to give the oxide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2181459A GB865306A (en) | 1959-06-25 | 1959-06-25 | Metal recovery process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2181459A GB865306A (en) | 1959-06-25 | 1959-06-25 | Metal recovery process |
Publications (1)
Publication Number | Publication Date |
---|---|
GB865306A true GB865306A (en) | 1961-04-12 |
Family
ID=10169260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2181459A Expired GB865306A (en) | 1959-06-25 | 1959-06-25 | Metal recovery process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB865306A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0162954A2 (en) * | 1984-05-23 | 1985-12-04 | PREUSSAG Aktiengesellschaft Metall | Process for obtaining a germanium concentrate |
CN110306069A (en) * | 2019-07-09 | 2019-10-08 | 中锗科技有限公司 | A method of the Ti recovery from germanic acid solution, germanic lye |
-
1959
- 1959-06-25 GB GB2181459A patent/GB865306A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0162954A2 (en) * | 1984-05-23 | 1985-12-04 | PREUSSAG Aktiengesellschaft Metall | Process for obtaining a germanium concentrate |
EP0162954A3 (en) * | 1984-05-23 | 1988-03-16 | Preussag Aktiengesellschaft Metall | Process for obtaining a germanium concentrate |
CN110306069A (en) * | 2019-07-09 | 2019-10-08 | 中锗科技有限公司 | A method of the Ti recovery from germanic acid solution, germanic lye |
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