CN101748287A - Reducing medium used in copper refining process - Google Patents
Reducing medium used in copper refining process Download PDFInfo
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- CN101748287A CN101748287A CN200810136571A CN200810136571A CN101748287A CN 101748287 A CN101748287 A CN 101748287A CN 200810136571 A CN200810136571 A CN 200810136571A CN 200810136571 A CN200810136571 A CN 200810136571A CN 101748287 A CN101748287 A CN 101748287A
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- Prior art keywords
- reducing medium
- steam
- refining process
- copper refining
- medium used
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Abstract
The invention provides a reducing medium used in a copper refining process. A preparation method of the reducing medium comprises the following steps: adding steam with the pressure between 0.7 and 0.85 MPa into liquid gas; maintaining the temperature of the steam at about 200 DEG C; and maintaining the weight rate of the liquid gas to the steam at 1/8 to 9.5. The reducing medium has the characteristics of high utilization rate, small amount of generated waste gas and the like.
Description
Technical field
The present invention relates to the reducing medium that a kind of copper refining process uses.
Background technology
In the pyrogenic process copper refining process, the reducing medium of use generally has liquefied gas, Sweet natural gas, heavy oil or coal dust, and in use all there is the problem that exhausted air quantity is big, utilization ratio is low, environmental pollution is serious that produces in these several reducing mediums.This be because: (one) reduction process is an endothermic process, and the recovery time is long more, and the melt terminal temperature is low more, and low temperature restricting the reaction carrying out; (2) in the pyrogenic process copper refining process, guarantee that the certain furnace pressure power of going into of reducing medium is the precondition that guarantees that reduction process is finally finished. guaranteeing under the constant prerequisite of pressure, temperature is low more, the melt mixing effect is poor more, the contact area of reducing medium and melt is also just more little, reaction is also just inhomogeneous more, and the reaction times is also just long more.
Summary of the invention
Purpose of the present invention just provides the reducing medium that a kind of copper refining process uses, this medium utilization ratio height, and the exhausted air quantity of generation is few.
Purpose of the present invention can realize by following scheme: described reducing medium is that to mix pressure in liquefied gas be 0.7-0.85MPa steam, and the temperature maintenance of steam is about 200 ℃, and the weight ratio of liquefied gas and steam remains on 1: 8-9.5.
Before operation, earlier logical steam is hydrophobic, and grate feeds liquefied gas again to work point then, by control valve opening, makes the weight ratio of liquefied gas and steam remain on 1: 8-9.5.
Medium of the present invention has characteristics such as the exhausted air quantity of utilization ratio height, generation is few.
The present invention has carried out four months test by a definite date in the smeltery, Guixi, test-results shows, the simple use under the situation of liquefied gas as reducing medium in 2007, the average monthly usage liquefied gas is 5.39kg/t.Cu, and with the present invention as reducing medium, consuming liquefied gas in March, 2008 is 4.46kg/t.Cu, be 4.46kg/t.Cu April, be 4.21kg/t.Cu May, and be 3.43kg/t.Cu June, and the liquefied gas unit consumption will be saved more than 15%.
Claims (1)
1. the reducing medium that uses of a copper refining process is characterized in that described reducing medium is that to mix pressure in liquefied gas be 0.7-0.85MPa steam, and the temperature maintenance of steam is about 200 ℃, and the weight ratio of liquefied gas and steam remains on 1: 8-9.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810136571A CN101748287A (en) | 2008-12-16 | 2008-12-16 | Reducing medium used in copper refining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810136571A CN101748287A (en) | 2008-12-16 | 2008-12-16 | Reducing medium used in copper refining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101748287A true CN101748287A (en) | 2010-06-23 |
Family
ID=42475898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810136571A Pending CN101748287A (en) | 2008-12-16 | 2008-12-16 | Reducing medium used in copper refining process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101748287A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396283A (en) * | 2002-06-20 | 2003-02-12 | 乐可襄 | Reducer and process for reducing copper oxide in reduction phase of furnace using copper as anode |
| CN101045963A (en) * | 2006-03-31 | 2007-10-03 | 日矿金属株式会社 | Dry type refining method for copper |
-
2008
- 2008-12-16 CN CN200810136571A patent/CN101748287A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396283A (en) * | 2002-06-20 | 2003-02-12 | 乐可襄 | Reducer and process for reducing copper oxide in reduction phase of furnace using copper as anode |
| CN101045963A (en) * | 2006-03-31 | 2007-10-03 | 日矿金属株式会社 | Dry type refining method for copper |
Non-Patent Citations (1)
| Title |
|---|
| 朱祖泽等: "《现代铜冶金学》", 31 January 2003, 科学出版社 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100623 |