CN106367598A - Method for recovering tungsten and copper from copper-tungsten alloy waste - Google Patents
Method for recovering tungsten and copper from copper-tungsten alloy waste Download PDFInfo
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- CN106367598A CN106367598A CN201610803872.0A CN201610803872A CN106367598A CN 106367598 A CN106367598 A CN 106367598A CN 201610803872 A CN201610803872 A CN 201610803872A CN 106367598 A CN106367598 A CN 106367598A
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- copper
- tungsten
- waste material
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- alloy waste
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/36—Obtaining tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/16—Dry methods smelting of sulfides or formation of mattes with volatilisation or condensation of the metal being produced
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for recovering tungsten and copper from copper-tungsten alloy waste. The method comprises the following steps: (1) carrying out crushing treatment on the copper-tungsten alloy waste to obtain a copper-tungsten alloy waste powder; (2) carrying out vacuum evaporation on the copper-tungsten alloy waste powder to obtain copper vapour and metal tungsten; and (3) carrying out cooling treatment on the copper vapour to obtain metal copper. With the adoption of the method, 99.99% of metal tungsten and (greater than 99.99%) of metal copper can be directly recovered from the copper-tungsten alloy waste; and moreover, the method is simple to operate, short in process flow, and free from introducing impurities to the products copper and tungsten, and the products are high in purity, free from generating waste gas and waste residue, and pollution-free to environment.
Description
Technical field
The invention belongs to wolfram alloy waste reclaims field, specifically, the present invention relates to one kind is from copper-tungsten waste material
The method reclaiming tungsten and copper.
Background technology
Tungsten-copper alloy is with copper powder and tungsten powder by a certain percentage, is merged using powder metallurgy process and forms, this material is comprehensive
The respective advantage of tungsten and copper, is widely used in the fields such as military project material, electronic package material, electric dead-wood material, electrode material.With
The use time prolongation of tungsten-copper alloy material and the decline of function, tungsten-copper alloy exits application and becomes waste material.At present,
From waste metal material recovery metal, it has also become one of important sources of metals resources, industrial doing frequently with sour molten-electrolysis
Method reclaims tungsten and copper, first grinds tungsten-copper alloy, then with strong acid dissolution, more under optimum conditions electrolysis acid solution obtain tungsten and
Copper.The method has the disadvantage in that 1, technological process is complicated, need to grind alloy, sourer molten and electrolysis, and acid solution is in electricity
Easily form acid mist in solution preocess, cause work under bad environment；2nd, due to using strong acid, easily cause environment in operation
Pollution, also increases the work difficulty of operator；3rd, metal recovery rate is not high and purity is low；4th, production cost is high.
Therefore, the existing waste material from copper-tungsten, the technology of separating tungsten and copper is further improved.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention
One purpose is a kind of method proposing to reclaim tungsten and copper waste material from copper-tungsten, can be directly from copper tungsten using the method
Tungsten and the metallic copper (> 99% obtaining 99.99% is reclaimed in alloyed scrap), and the method is simple to operate, technological process
Short, product copper and tungsten are not introduced with impurity, product purity is high, does not produce waste gas waste residue, environment is not polluted.
In one aspect of the invention, the present invention proposes a kind of method reclaiming tungsten and copper waste material from copper-tungsten.
According to embodiments of the invention, methods described includes:
(1) copper-tungsten waste material is carried out pulverization process, to obtain copper-tungsten wasted powder；
(2) described copper-tungsten wasted powder is evaporated in vacuo, to obtain copper steam and tungsten；And
(3) described copper steam is carried out cooling treatment, to obtain metallic copper.
Thus, the according to embodiments of the present invention method reclaiming tungsten and copper from copper-tungsten waste material is by being divided using vacuum
From recovery technology, the feature being differed greatly using tungsten and copper boiling point is so that the copper in copper-tungsten waste material is divided in vapour form
From, and tungsten does not evaporate because of boiling point height, thus realizing the purpose detached with copper of tungsten in copper-tungsten waste material, and can using the method
Directly to reclaim tungsten and the metallic copper (> 99% obtaining 99.99% from copper-tungsten waste material), the method is simple to operate,
Technological process is short, and product copper and tungsten are not introduced with impurity, and product purity is high, does not produce waste gas waste residue, environment is not polluted.
In addition, the method for recovery tungsten and copper can also have the waste material from copper-tungsten according to the above embodiment of the present invention
The technical characteristic adding as follows:
In some embodiments of the invention, in step (2), described vacuum evaporation is carried out under 1～10pa.By
This, can significantly improve the separation efficiency of copper and tungsten.
In some embodiments of the invention, in step (2), the temperature of described vacuum evaporation is Celsius for 800～1000
Degree.Thus, it is possible to improve the separation efficiency of copper and tungsten further.
In some embodiments of the invention, step (2) and step (3) are carried out in a vacuum furnace.
In some embodiments of the invention, be provided with cooling collecting hood in described vacuum drying oven, described copper steam volatilize into
Enter described cooling collecting hood and carry out described cooling treatment.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein:
Fig. 1 is the method flow signal reclaiming tungsten and copper the waste material from copper-tungsten according to an embodiment of the invention
Figure.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
The application is to be completed based on the following discovery of present inventor: at present, industrial frequently with acid molten-electrolysis
Method reclaims tungsten and copper in copper-tungsten waste material, first grinds tungsten-copper alloy, then with strong acid dissolution, more under optimum conditions
Electrolysis acid solution obtains tungsten and copper.But the method technological process is complicated, need to grind alloy sourer molten and electrolysis, and
Acid solution easily forms acid mist in electrolytic process, causes work under bad environment；Simultaneously because using strong acid, hold in operation
Easily cause environmental pollution, also increase the work difficulty of operator；Secondly, gained metal recovery rate is not high and purity is low；And
And production cost is high.The present inventor is by being tried to explore it is intended to be solved to the handling process of copper-tungsten waste material
Defect of the prior art, obtains the handling process that metal recovery rate and purity are high and flow process is short.
Here, in one aspect of the invention, the present invention proposes and reclaims tungsten and copper a kind of waste material from copper-tungsten
Method.Below with reference to Fig. 1, tungsten is reclaimed from copper-tungsten waste material to the embodiment of the present invention and the method for copper is described in detail.
According to embodiments of the invention, the method includes:
S100: copper-tungsten waste material is carried out pulverization process
In this step, copper-tungsten waste material is carried out pulverization process, obtain copper-tungsten wasted powder.Need explanation
It is that those skilled in the art can be according to actual needs to smashing the concrete mode processing and gained copper-tungsten wasted powder
Particle diameter is selected.
S200: copper-tungsten wasted powder is evaporated in vacuo
In this step, above-mentioned obtained copper-tungsten wasted powder is evaporated in vacuo, so as to obtain copper steam and
Tungsten.Inventor finds, by using vacuum separation recovery technology, the feature being differed greatly using tungsten and copper boiling point is so that copper
Copper in wolfram alloy waste is separated in vapour form, and tungsten does not evaporate because of boiling point height, thus realizing in copper-tungsten waste material
Tungsten purpose detached with copper, and the metal obtaining 99.99% directly can be reclaimed from copper-tungsten waste material using the method
Tungsten and metallic copper (> 99%), the method is simple to operate, technological process is short, does not introduce impurity, product purity to product copper and tungsten
Height, does not produce waste gas waste residue, environment is not polluted.
According to one embodiment of present invention, the vacuum of Vacuum Evaporation Process is not particularly restricted, art technology
Personnel can be selected according to actual needs, according to a specific embodiment of the present invention, vacuum evaporation can be 1～
Carry out under 10pa.Inventor is had been surprisingly found that by many experiments, can ensure that in copper-tungsten waste material under this vacuum degree condition
Copper and tungsten have higher separation efficiency, and the high purity 99.99% of separating obtained tungsten, the high purity of metallic copper
More than 99%.
According to still a further embodiment, the temperature of Vacuum Evaporation Process is not particularly restricted, art technology
Personnel can be selected according to actual needs, and according to a specific embodiment of the present invention, the temperature of vacuum evaporation can be
800～1000 degrees Celsius.Inventor finds, at a temperature of this vacuum evaporation, in copper-tungsten waste material, copper and tungsten separation efficiency are optimal.
S300: copper steam is carried out cooling treatment
In this step, separating obtained copper steam is carried out cooling treatment, to obtain metallic copper.It should be noted that this
Skilled person can select to the condition of copper steam cooling treatment according to actual needs.
According to one embodiment of present invention, s200 and s300 step can be carried out in a vacuum furnace, and in vacuum drying oven
It is provided with cooling collecting hood.Specifically, the copper-tungsten wasted powder that step s100 obtains is loaded graphite crucible, then by stone
Black crucible is put in vacuum drying oven, closes bell, and vacuum drying oven is carried out being evacuated to 1-10pa, opens heating in vacuum, and temperature sets
For 800-1000 DEG C, so that the copper in copper-tungsten waste material is evaporated in cooling collecting hood and collected, after copper volatilization completely, stop
Only heating in vacuum, is cooled to room temperature, is passed through air blow-on, collects tungsten and metallic copper.
The according to embodiments of the present invention method reclaiming tungsten and copper from copper-tungsten waste material is by being returned using vacuum separation
Receipts technology, the feature being differed greatly using tungsten and copper boiling point so that the copper in copper-tungsten waste material is separated in vapour form, and
Tungsten does not evaporate because of boiling point height, thus realizing the purpose detached with copper of tungsten in copper-tungsten waste material, and can be straight using the method
Connect and reclaim tungsten and the metallic copper (> 99% obtaining 99.99% from copper-tungsten waste material), the method is simple to operate, technique
Flow process is short, and product copper and tungsten are not introduced with impurity, and product purity is high, does not produce waste gas waste residue, environment is not polluted.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, and limit the present invention never in any form.
Embodiment 1
10kg copper-tungsten waste material (copper content be 15wt%) is pulverized, and by the copper-tungsten obtaining wasted powder
Load graphite crucible, then put into graphite crucible in vacuum drying oven, close bell, open vacuum pump and be evacuated to 10pa, through inspection
Electrical heating is opened to 950 DEG C after testing no gas leakage, cooling down after insulation 3h, collect metallic copper 1.39kg in cooling collecting hood,
In graphite crucible receive tungsten 8.42kg, after testing copper purity reach 98.5%, tungsten purity reaches 99.99%.
Embodiment 2
10kg copper-tungsten waste material (copper content be 15wt%) is pulverized, and by the copper-tungsten obtaining wasted powder
Load graphite crucible, then put into graphite crucible in vacuum drying oven, close bell, open vacuum pump and be evacuated to 5pa, through inspection
Electrical heating is opened to 950 DEG C no after gas leakage, cooling down after insulation 3h, collect metallic copper 1.42kg in cooling collecting hood,
In graphite crucible receive tungsten 8.45kg, after testing copper purity reach 99.5%, tungsten purity reaches 99.99%.
Embodiment 3
10kg copper-tungsten waste material (copper content be 15wt%) is pulverized, and by the copper-tungsten obtaining wasted powder
Load graphite crucible, then put into graphite crucible in vacuum drying oven, close bell, open vacuum pump and be evacuated to 1pa, through inspection
Electrical heating is opened to 950 DEG C no after gas leakage, cooling down after insulation 3h, collect metallic copper 1.47kg in collecting hood, in graphite
In crucible receive tungsten 8.49kg, after testing copper purity reach 99.9%, tungsten purity reaches 99.995%.
Embodiment 4
10kg copper-tungsten waste material (copper content be 15wt%) is pulverized, and by the copper-tungsten obtaining wasted powder
Load graphite crucible, then put into graphite crucible in vacuum drying oven, close bell, open vacuum pump and be evacuated to 10pa, through inspection
Electrical heating is opened to 900 DEG C after testing no gas leakage, cooling down after insulation 3h, collect metallic copper 1.40kg in collecting hood, in stone
In black crucible receive tungsten 8.41kg, after testing copper purity reach 99%, tungsten purity reaches 99.98%.
Embodiment 5
10kg copper-tungsten waste material (copper content be 15wt%) is pulverized, and by the copper-tungsten obtaining wasted powder
Load graphite crucible, then put into graphite crucible in vacuum drying oven, close bell, open vacuum pump and be evacuated to 5pa, through inspection
Electrical heating is opened to 900 DEG C no after gas leakage, cooling down after insulation 3h, collect metallic copper 1.45kg in collecting hood, in graphite
In crucible receive tungsten 8.45kg, after testing copper purity reach 99.2%, tungsten purity reaches 99.99%.
Embodiment 6
10kg copper-tungsten waste material (copper content be 15wt%) is pulverized, and by the copper-tungsten obtaining wasted powder
Load graphite crucible, then put into graphite crucible in vacuum drying oven, close bell, open vacuum pump and be evacuated to 1pa, through inspection
Electrical heating is opened to 900 DEG C no after gas leakage, cooling down after insulation 3h, collect metallic copper 1.46kg in collecting hood, in graphite
In crucible receive tungsten 8.48kg, after testing copper purity reach 99.7%, tungsten purity reaches 99.99%.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (5)
1. reclaim the method for tungsten and copper a kind of waste material from copper-tungsten it is characterised in that including:
(1) copper-tungsten waste material is carried out pulverization process, to obtain copper-tungsten wasted powder；
(2) described copper-tungsten wasted powder is evaporated in vacuo, to obtain copper steam and tungsten；And
(3) described copper steam is carried out cooling treatment, to obtain metallic copper.
2. method according to claim 1 is it is characterised in that in step (2), described vacuum evaporation is in 1～10pa
Under carry out.
3. method according to claim 1 and 2 is it is characterised in that in step (2), the temperature of described vacuum evaporation is
800～1000 degrees Celsius.
4. method according to claim 1 is it is characterised in that step (2) and step (3) are carried out in a vacuum furnace.
5. method according to claim 4 is it is characterised in that be provided with cooling collecting hood, described copper in described vacuum drying oven
Steam is volatized into described cooling collecting hood and carries out described cooling treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610803872.0A CN106367598B (en) | 2016-09-06 | 2016-09-06 | The method that tungsten and copper are recycled from copper-tungsten waste material |
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| CN201610803872.0A CN106367598B (en) | 2016-09-06 | 2016-09-06 | The method that tungsten and copper are recycled from copper-tungsten waste material |
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| CN106367598B CN106367598B (en) | 2018-04-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019143231A (en) * | 2018-02-23 | 2019-08-29 | 学校法人法政大学 | Noble metal concentration method and noble metal concentration device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127792A (en) * | 1994-07-29 | 1996-07-31 | 狄原映久 | Method for processing metallic waste |
| DE10134286C1 (en) * | 2001-08-03 | 2002-12-12 | Ald Vacuum Techn Ag | Device for distilling molten metal comprises a pot-like lower housing part for receiving a melt crucible and an upper housing part connected to the lower housing part |
-
2016
- 2016-09-06 CN CN201610803872.0A patent/CN106367598B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1127792A (en) * | 1994-07-29 | 1996-07-31 | 狄原映久 | Method for processing metallic waste |
| DE10134286C1 (en) * | 2001-08-03 | 2002-12-12 | Ald Vacuum Techn Ag | Device for distilling molten metal comprises a pot-like lower housing part for receiving a melt crucible and an upper housing part connected to the lower housing part |
Non-Patent Citations (2)
| Title |
|---|
| 中南矿冶学院冶金原理教研组主编: "《有色冶金原理》", 30 September 1961, 中国工业出版社 * |
| 铟冶金: "《铟冶金》", 30 April 2006, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019143231A (en) * | 2018-02-23 | 2019-08-29 | 学校法人法政大学 | Noble metal concentration method and noble metal concentration device |
| JP7046352B2 (en) | 2018-02-23 | 2022-04-04 | 学校法人法政大学 | Precious metal concentrating method and precious metal concentrator |
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| CN106367598B (en) | 2018-04-17 |
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