CN109182784A - A kind of tungsten ore green smelting process - Google Patents
A kind of tungsten ore green smelting process Download PDFInfo
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- CN109182784A CN109182784A CN201811218167.XA CN201811218167A CN109182784A CN 109182784 A CN109182784 A CN 109182784A CN 201811218167 A CN201811218167 A CN 201811218167A CN 109182784 A CN109182784 A CN 109182784A
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- tungsten
- flotation
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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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/36—Obtaining tungsten
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of tungsten ore green smelting processes, get rid of the constraint of traditional alkali (acid) leaching-purification-ammonium salt transformation process, have the advantage that the tungsten carbide impurity content 1. produced is low, it can satisfy quality requirement, 2. metal recovery rate is high, the problem of discharge of pickle liquor causes environmental pollution 3. can solve, which has easy to operate, rate of recovery height and environmental-friendly advantage, have a vast market foreground.
Description
Technical field
The present invention relates to tungsten ore field of smelting, in particular to a kind of tungsten ore green smelting process.
Background technique
Tungsten is a kind of very valuable rare metal resources, and metal and compound are widely used in metallurgy, mechanical, electronics
With the fields such as chemical industry.With the consumption and reduction of high-grade tungsten ore resource, the tungsten ore resource grade of Tungsten smelting business processes and at
Point variation is big, impurity is more, and every batch of mineral aggregate must carry out strata behavior before entering smelting production, carry out a large amount of engineer testing and grind
Study carefully determining the best processing route and its technological parameter, this process is not only time-consuming but also increases cost.China is that tungsten resource and Tungsten smelting are big
State, tungsten ore and ammonium paratungstate (APT) yield accounts for 80% or more of the whole world, if large quantities of Tungsten smelting enterprises are difficult to reach because of technology
National requirements for environmental protection and close, will on China so that world economy cause extreme shock and influence.So urgently needing a kind of tungsten
Mine green smelting process.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of tungsten ore green smelting processes, to solve to lead in the prior art
The above-mentioned defects of cause.
To achieve the above object, the present invention provides a kind of technical solution below: tungsten ore green smelting process, including as follows
Step:
(1) it pre-processes
Tungsten slurry is led to cyclone first to pre-process, obtains tungsten mud, the pretreated time is 10-20min；
(2) flotation
Then tungsten mud and flotation agent are subjected to flotation by jet flotation machine；
(3) it is centrifuged selected
Then the tungsten mud after flotation is centrifuged by centrifuge, obtains fine tungsten mud；
(4) dry
Fine tungsten mud is dried by microwave dryer, the time of the drying is 12-24h；
(5) it grinds
Then the fine tungsten mud after drying is ground by oscillating mill, forms tungsten slag, the time of the grinding
For 1-2h；
(6) caustic digestion
Then the tungsten slag after grinding is added in reaction kettle, carries out soda boiling decomposition, form soda boiling liquid, the temperature of the soda boiling
Degree is 80-160 DEG C；Auxiliary material is added in the process, and auxiliary material is solid caustic soda and soda, and the two ratio is 1:1, the mass ratio of auxiliary material and ore pulp
For 1:8, pressure is controlled in 1-2MPa；
(7) it adsorbs
Then soda boiling liquid is adsorbed by ion exchanger, obtains adsorption liquid, the time of the absorption is 3-5h；
(8) it desorbs
Then adsorption liquid is desorbed by strippant, the time of the desorption is 2-4h, obtains ammonium tungstate solution；
(9) evaporative crystallization
Precipitation is obtained into APT by evaporative crystallization by ammonium tungstate solution, the time of the evaporative crystallization is 3-6h.
Preferably, the granularity of the pretreated tungsten mud of cyclone is 25-35um in the step (1).
Preferably, flotation is to scan flotation column and scavenging flotation machine in the step (2).
Preferably, the flotation column and the number of scavenging flotation machine scanned is respectively 1 time and 1-3 times.
Preferably, flotation agent is plumbi nitras in the step (2), and the dosage of the plumbi nitras is 150-210g/t.
Preferably, vulcanizing agent is added while desorption in the step (8).
Be using the beneficial effect of above technical scheme: the present invention provides a kind of tungsten ore green smelting processes, using alkali
Decomposition+absorption technique improves the content of tungsten in liquid, and the purity of extraction is higher, has the advantage that the tungsten carbide 1. produced
Impurity content is low, can satisfy quality requirement, and 2. metal recovery rate is high, and the discharge that 3. can solve pickle liquor causes environment dirty
The problem of dye, the tungsten ore green smelting process have easy to operate, rate of recovery height and environmental-friendly advantage, with wide
Market prospects.
Specific embodiment
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1:
A kind of tungsten ore green smelting process, includes the following steps:
(1) it pre-processes
Tungsten slurry is led to cyclone first to pre-process, obtains tungsten mud, the pretreated time is 10min, described
The granularity of the pretreated tungsten mud of cyclone is 25um；
(2) flotation
Then tungsten mud and flotation agent are subjected to flotation by jet flotation machine, the flotation is to scan flotation column and scan floating
Select machine, one roughing scans flotation column+scan three flotation devices, the number difference for scanning flotation column and scavenging flotation machine twice
For 1 time and 1 time, the flotation agent is plumbi nitras, and the dosage of the plumbi nitras is 150g/t；
(3) it is centrifuged selected
Then the tungsten mud after flotation is centrifuged by centrifuge, obtains fine tungsten mud；
(4) dry
Fine tungsten mud is dried by microwave dryer, the time of the drying is 12h；
(5) it grinds
Then the fine tungsten mud after drying is ground by oscillating mill, forms tungsten slag, the time of the grinding
For 1h；
(6) caustic digestion
Then the tungsten slag after grinding is added in reaction kettle, carries out soda boiling decomposition, form soda boiling liquid, the temperature of the soda boiling
Degree is 120 DEG C；Add auxiliary material in the process, auxiliary material is solid caustic soda and soda, and the two ratio is 1:1, and the mass ratio of auxiliary material and ore pulp is
1:8, pressure are controlled in 1.5MPa；
(7) it adsorbs
Then soda boiling liquid is adsorbed by ion exchanger, obtains adsorption liquid, the time of the absorption is 3h；
(8) it desorbs
Then adsorption liquid is desorbed by strippant, the time of the desorption is 2h, obtains ammonium tungstate solution, described
Vulcanizing agent is added while desorption；
(9) evaporative crystallization
Precipitation is obtained into APT by evaporative crystallization by ammonium tungstate solution, the time of the evaporative crystallization is 3h.
Embodiment 2:
A kind of tungsten ore green smelting process, includes the following steps:
(1) it pre-processes
Tungsten slurry is led to cyclone first to pre-process, obtains tungsten mud, the pretreated time is 15min, described
The granularity of the pretreated tungsten mud of cyclone is 30um；
(2) flotation
Then tungsten mud and flotation agent are subjected to flotation by jet flotation machine, the flotation is to scan flotation column and scan floating
Select machine, one roughing scans flotation column+scan three flotation devices, the number difference for scanning flotation column and scavenging flotation machine twice
For 1 time and 2 times, the flotation agent is plumbi nitras, and the dosage of the plumbi nitras is 180g/t；
(3) it is centrifuged selected
Then the tungsten mud after flotation is centrifuged by centrifuge, obtains fine tungsten mud；
(4) dry
Fine tungsten mud is dried by microwave dryer, the time of the drying is 18h；
(5) it grinds
Then the fine tungsten mud after drying is ground by oscillating mill, forms tungsten slag, the time of the grinding
For 1.5h；
((6) caustic digestion
Then the tungsten slag after grinding is added in reaction kettle, carries out soda boiling decomposition, form soda boiling liquid, the temperature of the soda boiling
Degree is 80 DEG C；Add auxiliary material in the process, auxiliary material is solid caustic soda and soda, and the two ratio is 1:1, and the mass ratio of auxiliary material and ore pulp is 1:
8, pressure is controlled in 1MPa；
(7) it adsorbs
Then soda boiling liquid is adsorbed by ion exchanger, obtains adsorption liquid, the time of the absorption is 4h；
(8) it desorbs
Then adsorption liquid is desorbed by strippant, the time of the desorption is 3h, obtains ammonium tungstate solution, described
Vulcanizing agent is added while desorption；
(9) evaporative crystallization
Precipitation is obtained into APT by evaporative crystallization by ammonium tungstate solution, the time of the evaporative crystallization is 4.5h.
Embodiment 3:
A kind of tungsten ore green smelting process, includes the following steps:
(1) it pre-processes
Tungsten slurry is led to cyclone first to pre-process, obtains tungsten mud, the pretreated time is 20min, described
The granularity of the pretreated tungsten mud of cyclone is 35um；
(2) flotation
Then tungsten mud and flotation agent are subjected to flotation by jet flotation machine, the flotation is to scan flotation column and scan floating
Select machine, one roughing scans flotation column+scan three flotation devices, the number difference for scanning flotation column and scavenging flotation machine twice
For 1 time and 3 times, the flotation agent is plumbi nitras, and the dosage of the plumbi nitras is 210g/t；
(3) it is centrifuged selected
Then the tungsten mud after flotation is centrifuged by centrifuge, obtains fine tungsten mud；
(4) dry
Fine tungsten mud is dried by microwave dryer, the time of the drying is for 24 hours；
(5) it grinds
Then the fine tungsten mud after drying is ground by oscillating mill, forms tungsten slag, the time of the grinding
For 2h；
(6) caustic digestion
Then the tungsten slag after grinding is added in reaction kettle, carries out soda boiling decomposition, form soda boiling liquid, the temperature of the soda boiling
Degree is 160 DEG C；Add auxiliary material in the process, auxiliary material is solid caustic soda and soda, and the two ratio is 1:1, and the mass ratio of auxiliary material and ore pulp is
1:8, pressure are controlled in 2MPa；
(7) it adsorbs
Then soda boiling liquid is adsorbed by ion exchanger, obtains adsorption liquid, the time of the absorption is 5h；
(8) it desorbs
Then adsorption liquid is desorbed by strippant, the time of the desorption is 4h, obtains ammonium tungstate solution, described
Vulcanizing agent is added while desorption；
(89) evaporative crystallization
Precipitation is obtained into APT by evaporative crystallization by ammonium tungstate solution, the time of the evaporative crystallization is 6h.
After above method, sample is taken out respectively, and measurement result is as follows:
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Existing index |
| Resolution factor (%) | 95.4 | 98.1 | 97.6 | 91.1 |
| Environmental pollution | It is few | It is few | It is few | It is less |
| Impurity content | It is few | It is few | It is few | It is less |
According to above table data it can be concluded that, when the parameter of embodiment 2, after tungsten after smelting is smelted than the prior art
Tungsten resolution factor it is high, it is low in the pollution of the environment, and impurity content is few, is more advantageous to the smelting of tungsten at this time.
The present invention provides a kind of tungsten ore green smelting process, gets rid of traditional alkali (acid) leaching-purification-ammonium salt transformation process
Constraint, has the advantage that the tungsten carbide impurity content 1. produced is low, can satisfy quality requirement, and 2. metal recovery rate is high, 3.
It can solve the problem of discharge of pickle liquor causes environmental pollution, which has easy to operate, recycling
Rate height and environmental-friendly advantage, have a vast market foreground.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection scope.
Claims (6)
1. a kind of tungsten ore green smelting process, which comprises the steps of:
(1) it pre-processes
Tungsten slurry is led to cyclone first to pre-process, obtains tungsten mud, the pretreated time is 10-20min；
(2) flotation
Then tungsten mud and flotation agent are subjected to flotation by jet flotation machine；
(3) it is centrifuged selected
Then the tungsten mud after flotation is centrifuged by centrifuge, obtains fine tungsten mud；
(4) dry
Fine tungsten mud is dried by microwave dryer, the time of the drying is 12-24h；
(5) it grinds
Then the fine tungsten mud after drying is ground by oscillating mill, forms tungsten slag, the time of the grinding is 1-
2h；
(6) caustic digestion
Then the tungsten slag after grinding is added in reaction kettle, carries out soda boiling decomposition, form soda boiling liquid, the temperature of the soda boiling is
80-160℃；Add auxiliary material in the process, auxiliary material is solid caustic soda and soda, and the two ratio is 1:1, and the mass ratio of auxiliary material and ore pulp is 1:
8, pressure is controlled in 1-2MPa；
(7) it adsorbs
Then soda boiling liquid is adsorbed by ion exchanger, obtains adsorption liquid, the time of the absorption is 3-5h；
(8) it desorbs
Then adsorption liquid is desorbed by strippant, the time of the desorption is 2-4h, obtains ammonium tungstate solution；
(9) evaporative crystallization
Precipitation is obtained into APT by evaporative crystallization by ammonium tungstate solution, the time of the evaporative crystallization is 3-6h.
2. a kind of tungsten ore green smelting process according to claim 1, which is characterized in that cyclone in the step (1)
The granularity of pretreated tungsten mud is 25-35um.
3. a kind of tungsten ore green smelting process according to claim 1, which is characterized in that in the step (2) flotation be
Scan flotation column and scavenging flotation machine.
4. a kind of tungsten ore green smelting process according to claim 3, which is characterized in that described to scan flotation column and scan
The number of flotation device is respectively 1 time and 1-3 times.
5. a kind of tungsten ore green smelting process according to claim 1, which is characterized in that flotation agent in the step (2)
For plumbi nitras, the dosage of the plumbi nitras is 150-210g/t.
6. a kind of tungsten ore green smelting process according to claim 1, which is characterized in that desorbed in the step (8)
Vulcanizing agent is added simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218167.XA CN109182784A (en) | 2018-10-19 | 2018-10-19 | A kind of tungsten ore green smelting process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811218167.XA CN109182784A (en) | 2018-10-19 | 2018-10-19 | A kind of tungsten ore green smelting process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101927A (en) * | 1987-03-11 | 1988-09-21 | 中南工业大学 | Select low grade wolfram to produce ammonium paratungstate with tungsten slurry and difficulty |
| CN1377980A (en) * | 2002-02-06 | 2002-11-06 | 王旭升 | Process for preparing high purity ammonium para-tungstate using hihg-molybdenum tungsten ore |
| CN101269352A (en) * | 2008-05-05 | 2008-09-24 | 广州有色金属研究院 | Beneficiation method for black and white tungsten fine deposit |
-
2018
- 2018-10-19 CN CN201811218167.XA patent/CN109182784A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101927A (en) * | 1987-03-11 | 1988-09-21 | 中南工业大学 | Select low grade wolfram to produce ammonium paratungstate with tungsten slurry and difficulty |
| CN1377980A (en) * | 2002-02-06 | 2002-11-06 | 王旭升 | Process for preparing high purity ammonium para-tungstate using hihg-molybdenum tungsten ore |
| CN101269352A (en) * | 2008-05-05 | 2008-09-24 | 广州有色金属研究院 | Beneficiation method for black and white tungsten fine deposit |
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Application publication date: 20190111 |