GB438402A - Improvements in and relating to the production of ammonium cyanide - Google Patents
Improvements in and relating to the production of ammonium cyanideInfo
- Publication number
- GB438402A GB438402A GB243535A GB243535A GB438402A GB 438402 A GB438402 A GB 438402A GB 243535 A GB243535 A GB 243535A GB 243535 A GB243535 A GB 243535A GB 438402 A GB438402 A GB 438402A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- heating
- metal
- ammonium
- mixture
- 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
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/001—Preparation by decomposing nitrogen-containing organic compounds, e.g. molasse waste or urea
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Ammonium cyanide is obtained by heating an intimate mixture of thiourea and/or ammonium thiocyanate with a metal which will combine with sulphur, the mixture being heated rapidly to about 300 DEG C., and thereafter less rapidly to about 500 DEG C. The ammonium cyanide may be recovered from the resulting gases by a dry method or by absorption in water. Suitable metals are copper, iron or zinc. The addition of substances such as paraffin to the mixture facilitates the reaction. The rapid heating to 300 DEG C. may be effected by introducing the mixture, a little at a time, into a muffle or similar furnace heated to about 300 DEG C. Cuprous sulphide resulting from the reaction can be reconverted into the metal in the same apparatus by oxidation to copper oxide followed by reduction to copper, say by means of coke oven gas or by heating with excess of paraffin. Specification 438,358 is referred to.ALSO:Copper sulphide, obtained together with ammonium cyanide by heating thiourea or ammonium cyanate or both with copper, is reconverted into the metal in the same apparatus by oxidation to the oxide followed by reduction to the metal, say by means of coke oven gas or by heating with excess of paraffin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB243535A GB438402A (en) | 1934-05-10 | 1934-05-10 | Improvements in and relating to the production of ammonium cyanide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB243535A GB438402A (en) | 1934-05-10 | 1934-05-10 | Improvements in and relating to the production of ammonium cyanide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB438402A true GB438402A (en) | 1935-11-11 |
Family
ID=9739524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB243535A Expired GB438402A (en) | 1934-05-10 | 1934-05-10 | Improvements in and relating to the production of ammonium cyanide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB438402A (en) |
-
1934
- 1934-05-10 GB GB243535A patent/GB438402A/en not_active Expired
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