CN109395872A - A kind of hydrophobic molybdic tailing raw powder's production technology - Google Patents
A kind of hydrophobic molybdic tailing raw powder's production technology Download PDFInfo
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- CN109395872A CN109395872A CN201811219292.2A CN201811219292A CN109395872A CN 109395872 A CN109395872 A CN 109395872A CN 201811219292 A CN201811219292 A CN 201811219292A CN 109395872 A CN109395872 A CN 109395872A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The present invention discloses a kind of hydrophobic molybdic tailing raw powder's production technology, comprising: one, wet ball grinding molybdic tailing slag obtain powder；Two, dry powder is added hydrochloric acid and embathes to obtain mixture；Three, mixture is filtered, trapped substance and drying are rinsed；Four, grinding distribution is added NaOH solution and embathes to obtain mixture；Five, mixture is filtered, trapped substance and drying are rinsed；Six, hydrophobic modifier is prepared；Seven, it grinds trapped substance and is added in hydrophobic modifier, stirring in water bath obtains suspension；Eight, suspension is filtered, trapped substance is dried, sieving obtains hydrophobic molybdic tailing powder after dry grinding.The present invention prepares hydrophobic product as primary raw material using discarded molybdic tailing slag, realize the recycling of molybdic tailing slag, the method of the present invention organically combines ball milling, removal of impurities and modified technique, and the hydrophobic molybdic tailing powder made has overactivity degree and good hydrophobic performance.
Description
Technical field
The invention belongs to Mine Solid Wastes reutilization technology fields, and in particular to a kind of system of hydrophobic molybdic tailing powder
Preparation Method.
Background technique
With the rapid development of new and high technology, the demand to metal molybdenum is increasing, utilizes scale to the exploitation of molybdenum ore
Constantly increasing causes the accumulation of a large amount of molybdic tailing slags idle, this not only causes the significant wastage of resource, also generates to environment far-reaching
Influence.Active development new technology carries out high value added utilization again to these solid waste, to promoting national economic development
It is of great significance with enhancement of environment.
Molybdic tailing hardness and strength with higher are rich in SiO2、Al2O3、Fe2O3And the chemical components such as CaO, therefore,
It at present focuses mostly on the utilization of molybdic tailing slag in production construction material, such as makes clinker, thermal insulation material, ceramics
(201511031607.7) and pervious concrete (201711447355.5) etc..But surface hydrophobicity is carried out to molybdic tailing and is modified,
Its application as cheap hydrophobic spike, carrier, anti-wear agent and additive etc. is developed there is not yet related patents and document
Report.
Summary of the invention
Present invention is generally directed to the deficiencies in above-mentioned background technique, provide a kind of hydrophobic molybdic tailing raw powder's production technology,
This method uses discarded molybdic tailing slag to prepare hydrophobic product for primary raw material, and obtained hydrophobic molybdic tailing powder has overactivity
Degree and the features such as high molybdic tailing utilization rate, the method provided by the invention for prepare hydrophobic molybdic tailing powder is easy to get with raw material, at
This cheap distinguishing feature.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of preparation side of hydrophobic molybdic tailing powder
Method, which comprises the following steps:
Step 1: molybdic tailing slag is carried out wet ball grinding, molybdic tailing powder is obtained；
Step 2: being dried molybdic tailing powder, hydrochloric acid is added into the molybdic tailing powder after drying, under water bath condition
Stirring is embathed, and mixture is obtained；
Step 3: the mixture in filtration step two, dry after the trapped substance being obtained by filtration is rinsed；
Step 4: the trapped substance grinding distribution after will be dry in step 3, is then added NaOH solution stirring and embathes, obtain
Mixture；
Step 5: the mixture in filtration step four, dry after the trapped substance being obtained by filtration is rinsed；
Step 6: dispersing agent is added into surfactant solution, 20min~50min is stirred, hydrophobic modifier is obtained；
Step 7: the trapped substance grinding distribution after will be dry in step 5, then the trapped substance after grinding distribution is added
Into hydrophobic modifier described in step 6, stirring in water bath forms uniform suspension；
Step 8: the suspension in step 7 is filtered, dry grinding, mistake will be carried out after the trapped substance being obtained by filtration drying
Sieve, obtains hydrophobic molybdic tailing powder.
Above-mentioned a kind of hydrophobic molybdic tailing raw powder's production technology, which is characterized in that molybdic tailing powder described in step 1
Average grain diameter≤10 μm.
Above-mentioned a kind of hydrophobic molybdic tailing raw powder's production technology, which is characterized in that molybdic tailing powder described in step 1
Average grain diameter is 3 μm~5 μm.
Above-mentioned a kind of hydrophobic molybdic tailing raw powder's production technology, which is characterized in that the concentration of hydrochloric acid described in step 2 is
9mol/L~12mol/L, it is dry in step 2 after molybdic tailing powder and the mass ratio of hydrochloric acid be 1:(3~5).
Above-mentioned a kind of hydrophobic molybdic tailing raw powder's production technology, which is characterized in that the temperature being dried in step 2 is
100 DEG C~120 DEG C；The temperature of water-bath is 60 DEG C~80 DEG C in step 2, and stirring the time embathed is 1h~5h.
A kind of above-mentioned hydrophobic molybdic tailing raw powder's production technology, which is characterized in that NaOH solution described in step 4 it is dense
Degree is 4mol/L~10mol/L, and the trapped substance of grinding distribution and the mass ratio of NaOH solution are 1:(1~4 in step 4), step
It is 1h~5h that the time embathed is stirred in four.
Above-mentioned a kind of hydrophobic molybdic tailing raw powder's production technology, which is characterized in that rinsed described in step 3 and step 5
Method be with tap water, deionized water or distilled water repeated flushing 3 times~5 times；It is dry described in step 3 and step 5
Temperature be 100 DEG C~120 DEG C.
Above-mentioned a kind of hydrophobic molybdic tailing raw powder's production technology, which is characterized in that surfactant described in step 6 is molten
The mass percentage of surfactant is 1%~10% in liquid, and the surfactant is that Methyl Hydrogen Polysiloxane Fluid and silane are even
The mass ratio of connection agent KH570, Methyl Hydrogen Polysiloxane Fluid and silane coupling agent KH570 are 1:(0.1~1).
Above-mentioned a kind of hydrophobic molybdic tailing raw powder's production technology, which is characterized in that dispersing agent described in step 6 is dichloro
Methane, it is 2g~4g that the amount of dispersing agent, which is added, in surfactant solution described in every 100mL.
A kind of above-mentioned hydrophobic molybdic tailing raw powder's production technology, which is characterized in that every 100mL hydrophobic modifier in step 7
The amount of trapped substance after middle addition grinding distribution is 3g~7g；The temperature of stirring in water bath is 60 DEG C~100 DEG C in step 7, the time
For 20min~60min.
The invention has the following advantages that
1, the present invention uses discarded molybdic tailing slag to prepare hydrophobic product for primary raw material, belongs to the sharp again of solid waste
With, meet national policy requirement, have raw material be easy to get, low-cost distinguishing feature.
2, in the hydrophobic molybdic tailing raw powder's production technology of the present invention, the equal recoverable of bronsted lowry acids and bases bronsted lowry used effectively saves money
Source；Hydrophobically modified being carried out to molybdic tailing slag by organically combining the techniques such as ball milling, removal of impurities and modification, obtaining having high living
The hydrophobic molybdic tailing powder of change degree and good hydrophobic performance.
3, the activation grade of hydrophobic molybdic tailing powder prepared by the present invention is up to 98%, molybdic tailing utilization rate up to 90% with
On, with good performance, high economic benefit and social benefit.
Technical solution of the present invention is described in further detail below by embodiment.
Detailed description of the invention
Fig. 1 is that the microscopic appearance of hydrophobic molybdic tailing powder and the molybdic tailing powder without hydrophobic treatment of the invention compares
Figure.
Fig. 2 is the molybdic tailing powder hydrophobic effect figure of the embodiment of the present invention 1.
Fig. 3 is the molybdic tailing powder hydrophobic effect figure of the embodiment of the present invention 2.
Fig. 4 is the molybdic tailing powder hydrophobic effect figure of the embodiment of the present invention 3.
Fig. 5 is the molybdic tailing powder hydrophobic effect figure of the embodiment of the present invention 5.
Specific embodiment
Embodiment 1
Step 1: molybdic tailing slag is carried out wet ball grinding, molybdic tailing powder is obtained, the average grain diameter of molybdic tailing powder is 3 μ
m；
Step 2: being dried molybdic tailing powder, the temperature of drying process is 100 DEG C, to the molybdic tailing powder after drying
It is middle that the hydrochloric acid that concentration is 9mol/L is added, it stirs and embathes under water bath condition, obtain mixture；Molybdic tailing powder after drying with
The mass ratio of hydrochloric acid is 1:3；The temperature of the water-bath is 60 DEG C, time 1h；
Step 3: the mixture in filtration step two, after the trapped substance being obtained by filtration is rinsed 5 times with tap water, 100
It is dried again at DEG C；
Step 4: the trapped substance grinding distribution after will be dry in step 3, it is molten to be then added the NaOH that concentration is 4mol/L
Liquid stirring is embathed, and mixture is obtained；The trapped substance of grinding distribution and the mass ratio of NaOH solution are 1:1, stir the time embathed
For 1h；
Step 5: the mixture in filtration step four, after the trapped substance being obtained by filtration is rinsed 3 times with tap water, 100
It is dried again at DEG C；
Step 6: dispersing agent is added into surfactant solution, 20min is stirred, hydrophobic modifier is obtained；Surface-active
The mass percentage of surfactant is 1% in agent solution, and the surfactant is Methyl Hydrogen Polysiloxane Fluid and silane coupled
Agent KH570, Methyl Hydrogen Polysiloxane Fluid and silane coupling agent KH570 mass ratio are 1:0.1；
The dispersing agent is methylene chloride, and the amount that dispersing agent is added in surfactant solution described in every 100mL is 2g；
Step 7: the trapped substance grinding distribution after will be dry in step 5, then adds the trapped substance after 3g grinding distribution
Enter into hydrophobic modifier described in 100mL step 6, stirring in water bath forms uniform suspension；The temperature of stirring in water bath is 60
DEG C, mixing time 20min；
Step 8: the suspension in step 7 is filtered, dry grinding, mistake will be carried out after the trapped substance being obtained by filtration drying
Sieve, obtains the hydrophobic molybdic tailing powder of partial size≤10 μm.
Fig. 1 is the hydrophobic front and back exterior appearance comparison diagram of molybdic tailing powder of the present embodiment, modified as seen from the figure
The dispersibility of powder improves, and powder surface is rough, has cladding substance.
Embodiment 2
Step 1: molybdic tailing slag is carried out wet ball grinding, molybdic tailing powder is obtained, the average grain diameter of molybdic tailing powder is 4 μ
m；
Step 2: being dried molybdic tailing powder, the temperature of drying process is 110 DEG C, to the molybdic tailing powder after drying
It is middle that the hydrochloric acid that concentration is 10mol/L is added, it stirs and embathes under water bath condition, obtain mixture；Molybdic tailing powder after drying
Mass ratio with hydrochloric acid is 1:5；The temperature of the water-bath is 70 DEG C, time 2h；
Step 3: the mixture in filtration step two, after the trapped substance being obtained by filtration is rinsed 4 times with deionized water,
It is dried again at 110 DEG C；
Step 4: the trapped substance grinding distribution after will be dry in step 3, it is molten to be then added the NaOH that concentration is 6mol/L
Liquid stirring is embathed, and mixture is obtained；The trapped substance of grinding distribution and the mass ratio of NaOH solution are 1:4, stir the time embathed
For 2h；
Step 5: the mixture in filtration step four, after the trapped substance being obtained by filtration is rinsed 4 times with deionized water,
It is dried again at 110 DEG C；
Step 6: dispersing agent is added into surfactant solution, 30min is stirred, hydrophobic modifier is obtained；Surface-active
The mass percentage of surfactant is 3% in agent solution, and the surfactant is Methyl Hydrogen Polysiloxane Fluid and silane coupled
Agent KH570, Methyl Hydrogen Polysiloxane Fluid and silane coupling agent KH570 mass ratio are 1:0.3；
The dispersing agent is methylene chloride, and the amount that dispersing agent is added in surfactant solution described in every 100mL is 3g；
Step 7: the trapped substance grinding distribution after will be dry in step 5, then adds the trapped substance after 4g grinding distribution
Enter into hydrophobic modifier described in 100mL step 6, stirring in water bath forms uniform suspension；The temperature of stirring in water bath is 70
DEG C, mixing time 30min；
Step 8: the suspension in step 7 is filtered, dry grinding, mistake will be carried out after the trapped substance being obtained by filtration drying
Sieve, obtains the hydrophobic molybdic tailing powder of partial size≤10 μm.
Embodiment 3
Step 1: molybdic tailing slag is carried out wet ball grinding, molybdic tailing powder is obtained, the average grain diameter of molybdic tailing powder is 5 μ
m；
Step 2: being dried molybdic tailing powder, the temperature of drying process is 120 DEG C, to the molybdic tailing powder after drying
It is middle that the hydrochloric acid that concentration is 11mol/L is added, it stirs and embathes under water bath condition, obtain mixture；Molybdic tailing powder after drying
Mass ratio with hydrochloric acid is 1:4；The temperature of the water-bath is 80 DEG C, time 3h；
Step 3: the mixture in filtration step two, by the trapped substance being obtained by filtration with after distilled water flushing 5 times, 120
It is dried again at DEG C；
Step 4: the trapped substance grinding distribution after will be dry in step 3, it is molten to be then added the NaOH that concentration is 8mol/L
Liquid stirring is embathed, and mixture is obtained；The trapped substance of grinding distribution and the mass ratio of NaOH solution are 1:2, stir the time embathed
For 3h；
Step 5: the mixture in filtration step four, by the trapped substance being obtained by filtration with after distilled water flushing 5 times, 120
It is dried again at DEG C；
Step 6: dispersing agent is added into surfactant solution, 40min is stirred, hydrophobic modifier is obtained；Surface-active
The mass percentage of surfactant is 5% in agent solution, and the surfactant is Methyl Hydrogen Polysiloxane Fluid and silane coupled
Agent KH570, Methyl Hydrogen Polysiloxane Fluid and silane coupling agent KH570 mass ratio are 1:0.5；
The dispersing agent is methylene chloride, and the amount that dispersing agent is added in surfactant solution described in every 100mL is 4g；
Step 7: the trapped substance grinding distribution after will be dry in step 5, then adds the trapped substance after 5g grinding distribution
Enter into hydrophobic modifier described in 100mL step 6, stirring in water bath forms uniform suspension；The temperature of stirring in water bath is 80
DEG C, mixing time 40min；
Step 8: the suspension in step 7 is filtered, dry grinding, mistake will be carried out after the trapped substance being obtained by filtration drying
Sieve, obtains the hydrophobic molybdic tailing powder of partial size≤10 μm.
Embodiment 4
Step 1: molybdic tailing slag is carried out wet ball grinding, molybdic tailing powder is obtained, the average grain diameter of molybdic tailing powder is 8 μ
m；
Step 2: being dried molybdic tailing powder, the temperature of drying process is 120 DEG C, to the molybdic tailing powder after drying
It is middle that the hydrochloric acid that concentration is 12mol/L is added, it stirs and embathes under water bath condition, obtain mixture；Molybdic tailing powder after drying
Mass ratio with hydrochloric acid is 1:3；The temperature of the water-bath is 80 DEG C, time 4h；
Step 3: the mixture in filtration step two, after the trapped substance being obtained by filtration is rinsed 3 times with tap water, 120
It is dried again at DEG C；
Step 4: the trapped substance grinding distribution after will be dry in step 3, it is molten to be then added the NaOH that concentration is 10mol/L
Liquid stirring is embathed, and mixture is obtained；The trapped substance of grinding distribution and the mass ratio of NaOH solution are 1:1, stir the time embathed
For 4h；
Step 5: the mixture in filtration step four, after the trapped substance being obtained by filtration is rinsed 5 times with tap water, 120
It is dried again at DEG C；
Step 6: dispersing agent is added into surfactant solution, 50min is stirred, hydrophobic modifier is obtained；Surface-active
The mass percentage of surfactant is 7% in agent solution, and the surfactant is Methyl Hydrogen Polysiloxane Fluid and silane coupled
Agent KH570, Methyl Hydrogen Polysiloxane Fluid and silane coupling agent KH570 mass ratio are 1:0.7；
The dispersing agent is methylene chloride, and the amount that dispersing agent is added in surfactant solution described in every 100mL is 4g；
Step 7: the trapped substance grinding distribution after will be dry in step 5, then adds the trapped substance after 7g grinding distribution
Enter into hydrophobic modifier described in 100mL step 6, stirring in water bath forms uniform suspension；The temperature of stirring in water bath is 80
DEG C, mixing time 60min；
Step 8: the suspension in step 7 is filtered, dry grinding, mistake will be carried out after the trapped substance being obtained by filtration drying
Sieve, obtains the hydrophobic molybdic tailing powder of partial size≤10 μm.
Embodiment 5
Step 1: molybdic tailing slag is carried out wet ball grinding, molybdic tailing powder is obtained, the average grain diameter of molybdic tailing powder is 10
μm；
Step 2: being dried molybdic tailing powder, the temperature of drying process is 120 DEG C, to the molybdic tailing powder after drying
It is middle that the hydrochloric acid that concentration is 12mol/L is added, it stirs and embathes under water bath condition, obtain mixture；Molybdic tailing powder after drying
Mass ratio with hydrochloric acid is 1:3；The temperature of the water-bath is 80 DEG C, time 4h,
Step 3: the mixture in filtration step two, by the trapped substance being obtained by filtration with after distilled water flushing 5 times, 120
It is dried again at DEG C, obtains dry molybdic tailing powder；
Step 4: the trapped substance grinding distribution after will be dry in step 3, it is molten to be then added the NaOH that concentration is 10mol/L
Liquid, stirring are embathed, and mixture is obtained；The trapped substance of grinding distribution and the mass ratio of NaOH solution are 1:1, stir the time embathed
For 5h；
Step 5: the mixture in filtration step four, by the trapped substance being obtained by filtration with after distilled water flushing 5 times, 120
It is dry at DEG C；
Step 6: dispersing agent is added into surfactant solution, 50min is stirred, hydrophobic modifier is obtained；Surface-active
The mass percentage of surfactant is 10% in agent solution, and the surfactant is Methyl Hydrogen Polysiloxane Fluid and silane coupled
Agent KH570, Methyl Hydrogen Polysiloxane Fluid and silane coupling agent KH570 mass ratio are 1:1；
The dispersing agent is methylene chloride, and the amount that dispersing agent is added in surfactant solution described in every 100mL is 4g；
Step 7: the trapped substance grinding distribution after will be dry in step 5, then adds the trapped substance after 7g grinding distribution
Enter into hydrophobic modifier described in 100mL step 6, stirring in water bath forms uniform suspension；The temperature of stirring in water bath is 100
DEG C, mixing time 60min；
Step 8: the suspension in step 7 is filtered, dry grinding, mistake will be carried out after the trapped substance being obtained by filtration drying
Sieve, obtains the hydrophobic molybdic tailing powder of partial size≤10 μm.
The hydrophobic molybdic tailing powder for weighing Examples 1 to 5 is added in the beaker equipped with distilled water, magnetic agitation 20min
After stand for 24 hours, the sample filtering of bottom of a cup will be deposited in, will the trapped substance that be obtained by filtration drying after weigh；
The calculation formula of activation grade H are as follows:
Wherein, W1For the quality of weighed hydrophobic molybdic tailing powder, g；
W2For the quality of the trapped substance of drying, g；
The hydrophobic performance of molybdic tailing under 1 different technology conditions of table
As can be seen from Table 1, the activation grade highest of hydrophobic molybdic tailing powder is close to 98%, and in conjunction with Fig. 2~Fig. 5, water droplet is not
There is infiltration phenomenon and be stabilized in hydrophobic molybdic tailing powder surface, and water in embodiment 2 (Fig. 3) and embodiment 3 (Fig. 4)
It is in spherical for dripping, and shows that hydrophobic molybdic tailing powder has good hydrophobic performance.
Embodiment 6
The hydrophobic molybdic tailing powder of Example 2 and embodiment 3 is mixed with ammonium phosphate salt (90% partial size < 20 μm) respectively
Dry powder fire extinguishing agent is prepared, the mass percentage of hydrophobic molybdic tailing powder is 5%~7% in dry powder fire extinguishing agent, according to industry mark
Quasi- GA 578-2005 " ultra-fine dry powder extinguishing agent " examines the repellency of the dry powder fire extinguishing agent of preparation, moisture content and hydroscopicity
It surveys.Repellency shows that result is " without obvious water suction, not agglomerating ", meets the requirements of the standard；Moisture content detection result be respectively
0.223% (embodiment 2) and 0.214% (embodiment 3), meet the requirements of the standard；Hydroscopicity testing result is respectively 2.78% (real
Apply example 2) and 2.42% (embodiment 3), it meets the requirements of the standard.
With the testing result of the correlated performance of the presently commercially available Superfine Ammonium Phosphate Dry Chemical Fire Extinguishing Agent by white carbon black preparation
Comparison display, the hydrophobic boss height that the ammonium phosphate powder extinguishing agent of hydrophobic molybdic tailing powder preparation of the invention generates are obvious
Higher than the boss of the ultra-fine dry powder extinguishing agent of commercially available hydrophobic silicic aerogels preparation, show that ultra-fine dry powder extinguishing agent can be improved in this product
Hydrophobic performance and anti-moisture absorption agglomerate ability, moreover, this product it is raw materials used be mine waste residue, low cost also have bigger city
Field advantage.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (10)
1. a kind of hydrophobic molybdic tailing raw powder's production technology, which comprises the following steps:
Step 1: molybdic tailing slag is carried out wet ball grinding, molybdic tailing powder is obtained；
Step 2: being dried molybdic tailing powder described in step 1, hydrochloric acid is added into the molybdic tailing powder after drying, in water
Stirring is embathed under the conditions of bath, obtains mixture；
Step 3: the mixture in filtration step two, dry after the trapped substance being obtained by filtration is rinsed；
Step 4: the trapped substance grinding distribution after will be dry in step 3, is then added NaOH solution stirring and embathes, mixed
Object；
Step 5: the mixture in filtration step four, dry after the trapped substance being obtained by filtration is rinsed；
Step 6: dispersing agent is added into surfactant solution, 20min~50min is stirred, hydrophobic modifier is obtained；
Step 7: the trapped substance grinding distribution after will be dry in step 5, is then added to step for the trapped substance after grinding distribution
In hydrophobic modifier described in rapid six, stirring in water bath forms uniform suspension；
Step 8: the suspension in step 7 is filtered, dry grinding will be carried out after the trapped substance being obtained by filtration drying, is sieved,
Obtain hydrophobic molybdic tailing powder.
2. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that molybdenum described in step 1
Average grain diameter≤10 μm of tailing powder.
3. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 2, which is characterized in that molybdenum described in step 1
The average grain diameter of tailing powder is 3 μm~5 μm.
4. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that salt described in step 2
The concentration of acid is 9mol/L~12mol/L, and the mass ratio of molybdic tailing powder and hydrochloric acid in step 2 after drying is 1:(3~5).
5. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that at dry in step 2
The temperature of reason is 100 DEG C~120 DEG C；The temperature of water-bath is 60 DEG C~80 DEG C in step 2, and stirring the time embathed is 1h~5h.
6. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that described in step 4
The concentration of NaOH solution is 4mol/L~10mol/L, and the trapped substance of grinding distribution and the mass ratio of NaOH solution are in step 4
1:(1~4), it is 1h~5h that the time embathed is stirred in step 4.
7. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that step 3 and step 5
Described in the method for flushing be with tap water, deionized water or distilled water repeated flushing 3 times~5 times；Step 3 and step 5
Described in dry temperature be 100 DEG C~120 DEG C.
8. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that table described in step 6
The mass percentage of surfactant is 1%~10% in the activator solution of face, and the surfactant is methyl hydrogen silicon
The mass ratio of oil and silane coupling agent KH570, Methyl Hydrogen Polysiloxane Fluid and silane coupling agent KH570 are 1:(0.1~1).
9. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that divide described in step 6
Powder is methylene chloride, and the amount that dispersing agent is added in surfactant solution described in every 100mL is 2g~4g.
10. a kind of hydrophobic molybdic tailing raw powder's production technology according to claim 1, which is characterized in that every in step 7
The amount that the trapped substance after grinding distribution is added in 100mL hydrophobic modifier is 3g~7g；The temperature of stirring in water bath is in step 7
60 DEG C~100 DEG C, the time is 20min~60min.
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Citations (27)
| Publication number | Priority date | Publication date | Assignee | Title |
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