CN114082902A - Method and device for removing impurities from molten gold liquid - Google Patents
Method and device for removing impurities from molten gold liquid Download PDFInfo
- Publication number
- CN114082902A CN114082902A CN202111427738.2A CN202111427738A CN114082902A CN 114082902 A CN114082902 A CN 114082902A CN 202111427738 A CN202111427738 A CN 202111427738A CN 114082902 A CN114082902 A CN 114082902A
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- CN
- China
- Prior art keywords
- gold
- molten
- quartz
- iron
- stirring rod
- 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.)
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Links
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000010931 gold Substances 0.000 title claims abstract description 49
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 49
- 239000012535 impurity Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 title claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 239000010453 quartz Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000006004 Quartz sand Substances 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/12—Appurtenances, e.g. for sintering, for preventing splashing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method and a device for removing impurities from molten gold liquid, which are characterized in that iron-containing gold powder is dried and then heated to be molten, dry quartz sand is slowly added and slowly stirred by a quartz stirring rod in a molten state, reaction slag and redundant quartz sand are pulled out by the quartz stirring rod after full reaction, and then the molten gold liquid after impurity removal is slowly poured on a heated gold ingot mould to be cast into qualified gold ingots. By using the method, the gold powder containing excessive iron does not need to be repeatedly smelted, and the impurity iron in the gold ingot can be directly reduced.
Description
Technical Field
The invention relates to the technical field of gold smelting, in particular to a method and a device for removing impurities from molten gold liquid.
Background
In the gold smelting process, because the related steps are long in flow, other impurities are inevitably introduced sometimes, and the impurity grade of the gold ingot sold outwards is particularly strict, impurities must be removed before or in the casting process of the gold ingot so as to ensure that the gold ingot grade reaches the standard. In the existing gold refining process, iron impurities in the reduced gold powder exceed the standard due to the pollution of iron-containing substances in the primary reduction gold-precipitation process of a gold-containing solution, so that the iron impurities of a cast gold ingot finally exceed the standard. For the gold powder with over-standard iron content, the common treatment method is to add the gold powder with extremely low iron content, and the gold powder is cast into gold ingots with qualified impurity elements by the mixing method, so that the gold ingots are normally sold outside.
Because the iron-containing impurities in the unqualified gold powder exceed the standard, the method using the mixing can only add a small amount of unqualified gold powder each time, and the serious overstock of enterprise funds can be caused because a large amount of unqualified gold powder cannot be cast and sold.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method and a device for removing impurities from molten gold liquid.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for removing impurities from molten gold liquid comprises the following specific steps:
drying the iron-containing gold powder, heating and melting, slowly adding dry quartz sand and slowly stirring by using a quartz stirring rod in a molten state, pulling out reaction slag and redundant quartz sand by using the quartz stirring rod after full reaction, and slowly pouring the molten gold liquid after impurity removal on a heated gold ingot mold to cast into a qualified gold ingot.
The invention also provides a device for realizing the method, which comprises a quartz stirring rod, a crucible, an intermediate frequency furnace, a tilting mechanism and a gold ingot mold, wherein the intermediate frequency furnace is connected with the tilting mechanism; heating and melting the iron-containing gold powder in a crucible by using an intermediate frequency furnace, and stirring by using a quartz stirring rod; and after removing impurities, slowly pouring the molten gold liquid on the heated gold ingot mould by using a tilting mechanism to cast the molten gold liquid into qualified gold ingots.
The invention has the beneficial effects that:
(1) by utilizing the method, the gold powder containing excessive iron does not need to be repeatedly smelted, and the impurity iron in the gold ingot can be directly reduced;
(2) the method of doping qualified gold powder and unqualified gold powder is not needed, the occupied pressure stock of gold is reduced, and the circulation speed of the gold is accelerated.
Drawings
FIG. 1 is a schematic flow chart of a method of example 1 of the present invention;
fig. 2 is a schematic view of an apparatus according to embodiment 2 of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that the present embodiment is based on the technical solution, and the detailed implementation and the specific operation process are provided, but the protection scope of the present invention is not limited to the present embodiment.
Example 1
The embodiment provides a method for removing impurities from molten gold, as shown in fig. 1, the specific process is as follows:
drying the iron-containing gold powder, heating and melting, slowly adding dry quartz sand and slowly stirring by using a quartz stirring rod in a molten state, pulling out reaction slag and redundant quartz sand by using the quartz stirring rod after full reaction, and slowly pouring the molten gold liquid after impurity removal on a heated gold ingot mold to cast into a qualified gold ingot. The chemical formula of the reaction is shown below:
FeO+SiO2＝2FeO·SiO2
example 2
The embodiment provides a device for realizing the method of embodiment 1, as shown in fig. 2, comprising a quartz stirring rod 1, a crucible 2, an intermediate frequency furnace 3, a tilting mechanism 4 and a gold ingot mold 5, wherein the intermediate frequency furnace 3 is connected with the tilting mechanism 4; the iron-containing gold powder is heated and melted in a crucible 2 by using an intermediate frequency furnace 3, and a quartz stirring rod 1 is used for stirring; and after removing impurities, slowly pouring the molten gold liquid on a heated gold ingot mould 5 by using a tilting mechanism 4 to cast the molten gold liquid into a qualified gold ingot.
Various corresponding changes and modifications can be made by those skilled in the art based on the above technical solutions and concepts, and all such changes and modifications should be included in the protection scope of the present invention.
Claims (2)
1. A method for removing impurities from molten gold liquid is characterized by comprising the following specific steps:
drying the iron-containing gold powder, heating and melting, slowly adding dry quartz sand and slowly stirring by using a quartz stirring rod in a molten state, pulling out reaction slag and redundant quartz sand by using the quartz stirring rod after full reaction, and slowly pouring the molten gold liquid after impurity removal on a heated gold ingot mold to cast into a qualified gold ingot.
2. The device for realizing the method of claim 1, which comprises a quartz stirring rod, a crucible, an intermediate frequency furnace, a tilting mechanism and a gold ingot mold, wherein the intermediate frequency furnace is connected with the tilting mechanism; heating and melting the iron-containing gold powder in a crucible by using an intermediate frequency furnace, and stirring by using a quartz stirring rod; and after removing impurities, slowly pouring the molten gold liquid on the heated gold ingot mould by using a tilting mechanism to cast the molten gold liquid into qualified gold ingots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111427738.2A CN114082902A (en) | 2021-11-26 | 2021-11-26 | Method and device for removing impurities from molten gold liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111427738.2A CN114082902A (en) | 2021-11-26 | 2021-11-26 | Method and device for removing impurities from molten gold liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114082902A true CN114082902A (en) | 2022-02-25 |
Family
ID=80305193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111427738.2A Pending CN114082902A (en) | 2021-11-26 | 2021-11-26 | Method and device for removing impurities from molten gold liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114082902A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB116943A (en) * | 1917-07-04 | 1918-07-04 | Augustin Leon Jean Queneau | Process for Separating Metals from their Ores. |
| CN101545039A (en) * | 2009-02-09 | 2009-09-30 | 牛庆君 | Method for producing ferro-silicon by using a copper smelting waste slag electric stove integral deoxidation and reduction |
| CN102586620A (en) * | 2012-03-09 | 2012-07-18 | 广西有色再生金属有限公司 | Refining grate for smelting miscellaneous copper and smelting method thereof |
| AU2012250290B1 (en) * | 2012-07-03 | 2013-08-15 | Xiangguang Copper Co., Ltd | Process for recovering valuable metals from precious metal smelting slag |
| CN104498715A (en) * | 2014-11-27 | 2015-04-08 | 山东国大黄金股份有限公司 | Method for extracting gold and silver from acid making high-iron cinder and removing impurities |
| CN108754198A (en) * | 2018-05-25 | 2018-11-06 | 中国矿业大学 | Preparation method of flexible block metal glass |
| CN108914203A (en) * | 2018-07-18 | 2018-11-30 | 成都斯力康科技股份有限公司 | Metallic silicon refines deep impurity-removing method |
-
2021
- 2021-11-26 CN CN202111427738.2A patent/CN114082902A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB116943A (en) * | 1917-07-04 | 1918-07-04 | Augustin Leon Jean Queneau | Process for Separating Metals from their Ores. |
| CN101545039A (en) * | 2009-02-09 | 2009-09-30 | 牛庆君 | Method for producing ferro-silicon by using a copper smelting waste slag electric stove integral deoxidation and reduction |
| CN102586620A (en) * | 2012-03-09 | 2012-07-18 | 广西有色再生金属有限公司 | Refining grate for smelting miscellaneous copper and smelting method thereof |
| AU2012250290B1 (en) * | 2012-07-03 | 2013-08-15 | Xiangguang Copper Co., Ltd | Process for recovering valuable metals from precious metal smelting slag |
| CN104498715A (en) * | 2014-11-27 | 2015-04-08 | 山东国大黄金股份有限公司 | Method for extracting gold and silver from acid making high-iron cinder and removing impurities |
| CN108754198A (en) * | 2018-05-25 | 2018-11-06 | 中国矿业大学 | Preparation method of flexible block metal glass |
| CN108914203A (en) * | 2018-07-18 | 2018-11-30 | 成都斯力康科技股份有限公司 | Metallic silicon refines deep impurity-removing method |
Non-Patent Citations (1)
| Title |
|---|
| 李坚: "《轻稀贵金属冶金学》", 31 March 2018, 冶金工业出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220225 |