JPS57194221A - Manufacture of high purity gold - Google Patents
Manufacture of high purity goldInfo
- Publication number
- JPS57194221A JPS57194221A JP9014380A JP9014380A JPS57194221A JP S57194221 A JPS57194221 A JP S57194221A JP 9014380 A JP9014380 A JP 9014380A JP 9014380 A JP9014380 A JP 9014380A JP S57194221 A JPS57194221 A JP S57194221A
- Authority
- JP
- Japan
- Prior art keywords
- ingot
- gold
- close
- temp
- heating
- 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.)
- Pending
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
PURPOSE: To manufacture gold with ≥8 nines purity by cooling and solidifying molten gold refined by an oxidation method and a zone melting method, setting the resulting pure gold ingot on a smooth table, and sliding an electromagnet on the ingot while heating the ingot to a temp. close to the melting temp. of gold.
CONSTITUTION: Oxygen or air is blown into molten gold to oxidize and remove impurities such as Al, Fe, Zn and nonmetals, and it is treated by a zone melting method by which components other than gold are gathered at an end by repeating slow passing through a zonal heating part kept at about 1,100°C in a furnace. The treated gold is cooled and solidified to obtain a pure gold ingot 2. The ingot 2 is set on a heat resistant table 1 having a very smooth surface, and an electromagnet 3 is slid on the ingot 2 while in contact with the upper surface of the ingot 2. At the same time, the ingot 2 is heated to 1,000W1,040°C close to the melting temp. of glod by high frequency heating. Impurities in the ingot 2 are shifted and gathered at a part close to a bottom end of the ingot, and the part are removed by cutting.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9014380A JPS57194221A (en) | 1980-07-02 | 1980-07-02 | Manufacture of high purity gold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9014380A JPS57194221A (en) | 1980-07-02 | 1980-07-02 | Manufacture of high purity gold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57194221A true JPS57194221A (en) | 1982-11-29 |
Family
ID=13990278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9014380A Pending JPS57194221A (en) | 1980-07-02 | 1980-07-02 | Manufacture of high purity gold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57194221A (en) |
-
1980
- 1980-07-02 JP JP9014380A patent/JPS57194221A/en active Pending
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