GB358494A - Improvements in the manufacture and production of pure metals - Google Patents
Improvements in the manufacture and production of pure metalsInfo
- Publication number
- GB358494A GB358494A GB1019130A GB1019130A GB358494A GB 358494 A GB358494 A GB 358494A GB 1019130 A GB1019130 A GB 1019130A GB 1019130 A GB1019130 A GB 1019130A GB 358494 A GB358494 A GB 358494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- per cent
- chlorides
- alloys
- volatilization
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
- C21D3/02—Extraction of non-metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In the process of purification of impure iron and alloys of iron with metals that form volatile chlorides such as nickel, cobalt, chromium, vanadium and titanium, and silicon by treatment with chlorine, hydrogen chloride or gases containing them at elevated temperatures, for example in a rotary tube furnace, the chlorides are separated from the impurities of the material by volatilization and may be obtained in the case of the alloys, together, or if desired, separately by a fractional volatilization or by volatilizing them together and extracting by means of suitable solvents. Further purification of the chlorides may take place by redistillation, resublimation, extraction by solvents and reprecipitation, and they may be wholly or partially converted into the corresponding oxide or oxychloride by oxidation or hydrolytic dissociation, for example, by treatment with steam.ALSO:Pure iron is obtained by treating impure iron at elevated temperatures with chlorine or hydrogen chloride or gases containing them, separating the iron chloride formed from impurities by volatilization and reducing it by means of hydrogen if desired after further purification. The chloride may be completely or partially converted into the corresponding oxide or oxychloride before reduction to metal, by oxidation or hydrolytic dissociation, for example by treating the chloride with steam. The initial materials may comprise instead of iron, impure alloys of iron and metals (including silicon in this term) capable of forming volatile chlorides. The metal chlorides may be obtained separately by a fractional volatilization or by volatilizing them together and extracting by means of solvents, and reduced to obtain the pure metals. By not separating the chlorides or by separating them and subsequently bringing them together again after reduction if desired, of one or more of them substantially pure alloys can be obtained. The examples describe the purification of cast iron, ferrochromium containing about 63 per cent of chromium, 29 per cent of iron, and 6-8 per cent of carbon, an alloy containing 73 per cent of iron, 7 per cent of nickel, and 20 per cent of chromium, and ferrosilicon containing 70 per cent of silicon. The chloridizing may take place in a rotary tube or shaft furnace and the reduction in a tube furnace.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1019130A GB358494A (en) | 1930-03-31 | 1930-03-31 | Improvements in the manufacture and production of pure metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1019130A GB358494A (en) | 1930-03-31 | 1930-03-31 | Improvements in the manufacture and production of pure metals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB358494A true GB358494A (en) | 1931-09-30 |
Family
ID=9963227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1019130A Expired GB358494A (en) | 1930-03-31 | 1930-03-31 | Improvements in the manufacture and production of pure metals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB358494A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE740913C (en) * | 1940-03-01 | 1943-11-01 | Degussa | Process for the reduction of iron oxides or iron ores |
-
1930
- 1930-03-31 GB GB1019130A patent/GB358494A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE740913C (en) * | 1940-03-01 | 1943-11-01 | Degussa | Process for the reduction of iron oxides or iron ores |
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