CN106507824B - Uranium molybdenum associated minerals leaching method - Google Patents
Uranium molybdenum associated minerals leaching methodInfo
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- CN106507824B CN106507824B CN200710083184.2A CN200710083184A CN106507824B CN 106507824 B CN106507824 B CN 106507824B CN 200710083184 A CN200710083184 A CN 200710083184A CN 106507824 B CN106507824 B CN 106507824B
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- leaching
- uranium
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Abstract
The present invention relates to a kind of uranium molybdenum associated minerals leaching method.Which adopts leaching agent and oxidant to extract uranium and molybdenum in ore in the way of leaching；Mixture of the leaching agent used for water, sulfuric acid, soluble inorganic sulfate or inorganic disulfate, in leaching agent, hydrogen ion concentration is in 1.5mol/L～5.1mol/L, soluble inorganic sulfate or 0.1%～2% (weight) that inorganic disulfate consumption is ore weight；The leaching method is carried out at 20 DEG C～120 DEG C.High, the low production cost using the inventive method uranium molybdenum associated minerals leaching rate, resource utilization are high, and the slag meter leaching rate of uranium can bring up to more than 70% by 40%, and the leaching rate of molybdenum can bring up to more than 75% by less than 30%.
Description
Technical field
The present invention relates to the hydrometallurgical technology of uranium molybdenum associated minerals leaching, and in particular to a kind of uranium molybdenum associated minerals
Leaching method.
Background technology
All from uranium molybdenum association ore on the National Industrials such as the U.S., France, the Niger, Mexico, the former Soviet Union
Middle synthetical recovery molybdenum, and substantial amounts of research has been carried out to associated minerals Comprehensive Recovery Technology.Such as external Uranium industry
Alkaline pressure of oxygen leaching has been used for the leaching of uranium molybdenum associated minerals, certain effect has been obtained；Some easily soak uranium-bearing molybdenum ore
Normal pressure acidleach and alkali leaching can also be adopted to process.The research of domestic uranium molybdenum Comprehensive Recovery Technology starts from 20 generation
Record the end of the sixties, start mainly " subsidiary recovery ", i.e., when uranium ore is processed, the molybdenum for wherein containing is same
When be leached, the leaching rate of molybdenum only has 30% or so, does not pursue the leaching rate and the rate of recovery of molybdenum.Ground later
Study carefully conventional Leaching Uranium molybdenum, simultaneously SEPARATION OF URANIUM molybdenum is separately recovered while improving uranium molybdenum leaching rate.Using scheme have
Stirring acidleach, stirring alkali leaching, alkaline pressure of oxygen leaching, pressurization water logging or pressurize water logging acidleach or pressurized acid leaching again
Normal pressure acidleach etc. is multiple again, although the leaching rate of uranium can reach 90%, and the leaching rate of molybdenum only has 30%,
In addition it is difficult to solve production cost height, the low problem of resource utilization.
Content of the invention
It is an object of the invention to provide a kind of uranium molybdenum associated minerals leaching rate is high, and low production cost, resource profit
With the high uranium molybdenum associated minerals leaching method of rate.
Uranium molybdenum associated minerals leaching method of the present invention, which adopts leaching agent and oxidant with the side for leaching
Formula extracts uranium and molybdenum in ore, and leaching agent used by which is water, sulfuric acid and soluble inorganic sulfate or nothing
The mixture of machine disulfate, in leaching agent, hydrogen ion concentration is in 1.5mol/L～5.1mol/L, soluble
Mineral sulfates or 0.1%～2% (weight) that inorganic disulfate consumption is ore weight；The leaching side
Method is carried out at 20 DEG C～120 DEG C.
Uranium molybdenum associated minerals leaching method as above, the preferably soft manganese of the oxidant which is adopted when leaching
Ore deposit, 0.5%～7% (weight) of the pyrolusite consumption for ore weight.
Uranium molybdenum associated minerals leaching method as above, the weight ratio of the leaching agent adopted by which and ore for
(0.5-6.0)∶1.
Uranium molybdenum associated minerals leaching method as above, the ore grain size adopted by which is in 30 mesh～300
Mesh.
Uranium molybdenum associated minerals leaching method as above, the leaching method are carried out using agitating mode, are leached
Time was at 0.5 hour～10 hours.
Uranium molybdenum associated minerals leaching method as above, the soluble inorganic sulfate preferably sulfuric acid described in which
Sodium, magnesium sulfate, calcium sulfate, potassium sulfate or ammonium manganous sulfate；Inorganic disulfate preferably sulfuric acid hydrogen sodium or sulphur
Potassium hydrogen phthalate.
Effect of the invention is that：Uranium molybdenum associated minerals leaching method of the present invention, which employs intensification,
High hydrogen ion concentration and addition sulfate or disulfate method so that the leaching rate of uranium molybdenum has significantly
Improve.Carry out under Elevated Temperature Conditions, accelerate can Leach reaction speed, the leaching rate of uranium can improve 10%
More than, the leaching rate of molybdenum can improve more than 15%；Carry out under high hydrogen ion concentration, the leaching of uranium can be made
Go out rate and can improve more than 15%, the leaching rate of molybdenum can improve more than 30%；Add sulfate or disulfate
As auxiliary agent, the leaching rate of uranium can be made to improve more than 20%, the leaching rate of molybdenum can improve more than 15%.
Compared with leaching with convention stir, the slag meter leaching rate of the method for the invention uranium can bring up to 70% by 40%
More than；The leaching rate of molybdenum can bring up to more than 75% by less than 30%.The inventive method can be in same type uranium
Used in molybdenum associated minerals, with certain application prospect.
Specific embodiment
Embodiment 1
It is that (0.22%) uranium grade 0.011%, molybdenum grade are leached for the ore of 30 mesh to granularity；
Leaching agent is water, sulfuric acid, the mixture of niter cake；In leaching agent, hydrogen ion concentration exists
3.5mol/L, 0.1% (weight) of the niter cake consumption for ore weight；
The oxidant added when leaching is pyrolusite, and pyrolusite consumption is 1.5% (weight of ore weight
Amount).Other oxidants, such as potassium permanganate etc. can also be adopted.
Leaching agent is 1: 1 with the weight ratio of ore；
Extraction time took the mode of continuously stirring at 1 hour.
Ore is leached and is carried out at 35 DEG C；
Course of reaction：Various materials are added reactor on request, is continuously stirred 1 hour, material is passed through
Analysis is sent in filter, drying, leached mud.Slag meter leaching rate uranium 70.6%, molybdenum 73.8%.
Embodiment 2
It is that (0.22%) uranium grade 0.011%, molybdenum grade are leached for the ore of 300 mesh to granularity；
Leaching agent is water, sulfuric acid, the mixture of sodium sulphate；In leaching agent, hydrogen ion concentration is in 5.1mol/L,
2% (weight) of the sodium sulphate consumption for ore weight；
The oxidant added when leaching is pyrolusite, and pyrolusite consumption is 7% (weight) of ore weight.
Other oxidants, such as potassium permanganate etc. can also be adopted.
Leaching agent is 2: 1 with the weight of ore；
Extraction time took the mode of continuously stirring at 10 hours.
Ore is leached and is carried out at 100 DEG C；
Course of reaction：Various materials are added reactor on request, is continuously stirred 10 hours, material is passed through
Filter, dry, leached mud send analysis.Slag meter leaching rate uranium 73.8%, molybdenum 75.2%.
Embodiment 3
It is that (0.22%) uranium grade 0.011%, molybdenum grade are leached for the ore of 200 mesh to granularity；
Leaching agent is water, sulfuric acid, the mixture of ammonium manganous sulfate；In leaching agent, hydrogen ion concentration exists
1.5mol/L, 1.5% (weight) of the ammonium manganous sulfate consumption for ore weight；
The oxidant added when leaching is pyrolusite (containing manganese dioxide 35% in pyrolusite), pyrolusite
5% (weight) of the consumption for ore weight.
Leaching agent is 6: 1 with the weight ratio of ore；
Extraction time was at 9 hours.
Ore is leached and is carried out at 20 DEG C；
Course of reaction：Various materials are added reactor on request, is continuously stirred 9 hours, material is passed through
Analysis is sent in filter, drying, leached mud.Slag meter leaching rate uranium 70.2%, molybdenum 73.5%.
Embodiment 4
It is that (0.22%) uranium grade 0.011%, molybdenum grade are leached for the ore of 30 mesh to granularity；
Leaching agent is water, sulfuric acid, the mixture of potassium sulfate；In leaching agent, hydrogen ion concentration is in 3.0mol/L,
0.5% (weight) of the sulfuric acid potassium application rate for ore weight；
The oxidant added when leaching is pyrolusite (containing manganese dioxide 40% in pyrolusite), pyrolusite
2% (weight) of the consumption for ore weight.
Leaching agent is 4: 1 with the weight ratio of ore；
Extraction time was at 5 hours.
Ore is leached and is carried out at 120 DEG C；
Course of reaction：Various materials are added reactor on request, is continuously stirred 5 hours, material is passed through
Analysis is sent in filter, drying, leached mud.Slag meter leaching rate uranium 73.6%, molybdenum 75.0%
Embodiment 5
It is that (0.22%) uranium grade 0.011%, molybdenum grade are leached for the ore of 300 mesh to granularity；
Leaching agent is water, sulfuric acid, the mixture of magnesium sulfate；In leaching agent, hydrogen ion concentration is in 4.0mol/L,
1.0% (weight) of the magnesium sulfate consumption for ore weight；
The oxidant added when leaching is pyrolusite (containing manganese dioxide 35% in pyrolusite), pyrolusite
4% (weight) of the consumption for ore weight.
Leaching agent is 3: 1 with the weight ratio of ore；
Extraction time was at 7 hours.
Ore is leached and is carried out at 80 DEG C；
Course of reaction：Various materials are added reactor on request, is continuously stirred 7 hours, material is passed through
Analysis is sent in filter, drying, leached mud.Slag meter leaching rate uranium 73.9%, molybdenum 75.7%.
Embodiment 6
It is that (0.22%) uranium grade 0.011%, molybdenum grade are leached for the ore of 100 mesh to granularity；
Leaching agent is water, sulfuric acid, the mixture of potassium acid sulfate；In leaching agent, hydrogen ion concentration exists
2.0mol/L, 1.2% (weight) of the potassium acid sulfate consumption for ore weight；
The oxidant added when leaching is pyrolusite (containing manganese dioxide 40% in pyrolusite), pyrolusite
0.5% (weight) of the consumption for ore weight.
Leaching agent is 0.5: 1 with the weight ratio of ore；
Extraction time was at 4 hours.
Ore is leached and is carried out at 50 DEG C；
Course of reaction：Various materials are added reactor on request, is continuously stirred 4 hours, material is passed through
Analysis is sent in filter, drying, leached mud.Slag meter leaching rate uranium 70.1%, molybdenum 72.7%.
Claims (6)
1. a kind of uranium molybdenum associated minerals leaching method, which adopts leaching agent and oxidant to carry in the way of leaching
Take the uranium and molybdenum in ore, it is characterised in that：Leaching agent used is water, sulfuric acid and soluble inorganic sulfuric acid
Salt or the mixture of inorganic disulfate, in leaching agent hydrogen ion concentration in 1.5mol/L～5.1mol/L,
Soluble inorganic sulfate or 0.1%～2% (weight) that inorganic disulfate consumption is ore weight；Should
Leaching method is carried out at 20 DEG C～120 DEG C.
2. uranium molybdenum associated minerals leaching method according to claim 1, it is characterised in that：Leaching
The preferred pyrolusite of the oxidant of Shi Caiyong, 0.5%～7% (weight) of the pyrolusite consumption for ore weight.
3. uranium molybdenum associated minerals leaching method according to claim 1, it is characterised in that：Adopted
The weight ratio of leaching agent and ore be 0.5-6.0: 1.
4. uranium molybdenum associated minerals leaching method according to claim 1, it is characterised in that：Adopted
Ore grain size in 30 mesh～300 mesh.
5. uranium molybdenum associated minerals leaching method according to claim 1, it is characterised in that：The leaching side
Method is carried out using agitating mode, and extraction time was at 0.5 hour～10 hours.
6. uranium molybdenum associated minerals leaching method according to claim 1, it is characterised in that：Described can
Insoluble inorganic sulfate preferably sulfuric acid sodium, magnesium sulfate, calcium sulfate, potassium sulfate or ammonium manganous sulfate；Inorganic sulfur
Sour hydrogen salt preferably sulfuric acid hydrogen sodium or potassium acid sulfate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710083184.2A CN106507824B (en) | 2007-11-30 | 2007-11-30 | Uranium molybdenum associated minerals leaching method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710083184.2A CN106507824B (en) | 2007-11-30 | 2007-11-30 | Uranium molybdenum associated minerals leaching method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460348A (en) * | 2017-05-26 | 2017-12-12 | 核工业北京化工冶金研究院 | It is a kind of to handle the method rich in fluorite uranium ore |
-
2007
- 2007-11-30 CN CN200710083184.2A patent/CN106507824B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460348A (en) * | 2017-05-26 | 2017-12-12 | 核工业北京化工冶金研究院 | It is a kind of to handle the method rich in fluorite uranium ore |
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