GB412273A - Improvements in or relating to the extraction of tin from ores or the like - Google Patents
Improvements in or relating to the extraction of tin from ores or the likeInfo
- Publication number
- GB412273A GB412273A GB3659532A GB3659532A GB412273A GB 412273 A GB412273 A GB 412273A GB 3659532 A GB3659532 A GB 3659532A GB 3659532 A GB3659532 A GB 3659532A GB 412273 A GB412273 A GB 412273A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ore
- gas
- reducing
- ores
- preheated
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/08—Chloridising roasting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In extracting tin from ores by the use of a solid chloridizing agent such as calcium chloride, the ore is first preheated and chloridization then effected, say at 700--800 DEG C. with volatilization of stannous chloride, in the presence of a reducing gas such as carbon monoxide or producer gas introduced as such to the reaction zone after the preheating step. The process may be carried out in a multiple hearth furnace, preheating of the ore being effected in the upper part of the furnace and admixture of chloride and treatment with reducing gas taking place on the lower hearths. Excess of the chloridizing agent may be used. It is stated that hydrogen, water gas or coal gas are less effective as reducing agents than carbon monoxide. Specifications 26644/11, 229,359, 276,743, [all in Class 1 (iii)], and 403,122 are referred to. According to the Provisional Specification the ore may be preheated in a reducing atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3659532A GB412273A (en) | 1932-12-24 | 1932-12-24 | Improvements in or relating to the extraction of tin from ores or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3659532A GB412273A (en) | 1932-12-24 | 1932-12-24 | Improvements in or relating to the extraction of tin from ores or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB412273A true GB412273A (en) | 1934-06-25 |
Family
ID=10389559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3659532A Expired GB412273A (en) | 1932-12-24 | 1932-12-24 | Improvements in or relating to the extraction of tin from ores or the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB412273A (en) |
-
1932
- 1932-12-24 GB GB3659532A patent/GB412273A/en not_active Expired
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