CN109735706A - A method of monazite is handled using two sections of thermokalite decomposition techniques - Google Patents
A method of monazite is handled using two sections of thermokalite decomposition techniques Download PDFInfo
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- CN109735706A CN109735706A CN201910096543.0A CN201910096543A CN109735706A CN 109735706 A CN109735706 A CN 109735706A CN 201910096543 A CN201910096543 A CN 201910096543A CN 109735706 A CN109735706 A CN 109735706A
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- monazite
- leaching
- thermokalite
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- 238000000034 method Methods 0.000 title claims abstract description 104
- IKNAJTLCCWPIQD-UHFFFAOYSA-K cerium(3+);lanthanum(3+);neodymium(3+);oxygen(2-);phosphate Chemical compound [O-2].[La+3].[Ce+3].[Nd+3].[O-]P([O-])([O-])=O IKNAJTLCCWPIQD-UHFFFAOYSA-K 0.000 title claims abstract description 88
- 229910052590 monazite Inorganic materials 0.000 title claims abstract description 88
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 title claims abstract description 40
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 28
- 238000000227 grinding Methods 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 60
- 238000002386 leaching Methods 0.000 claims abstract description 59
- 238000001238 wet grinding Methods 0.000 claims abstract description 23
- 239000003518 caustics Substances 0.000 claims abstract description 18
- 230000029087 digestion Effects 0.000 claims abstract description 18
- 238000002791 soaking Methods 0.000 claims abstract description 8
- 239000004575 stone Substances 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 82
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 31
- 239000007787 solid Substances 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 27
- 238000003756 stirring Methods 0.000 claims description 27
- 239000002002 slurry Substances 0.000 claims description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000002585 base Substances 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000012141 concentrate Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 42
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 23
- 150000002910 rare earth metals Chemical class 0.000 description 22
- 239000000428 dust Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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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- Manufacture And Refinement Of Metals (AREA)
Abstract
A method of monazite being handled using two sections of thermokalite decomposition techniques, monazite material is handled with two segmented mode of leaching using mill leaching；Wet grinding mill leaching first is carried out to monazite material in immersing-by-grinding machine, in the material input monazite caustic digestion slot that wet grinding mill is leached again, it carries out thermokalite and decomposes leaching, two segmented mode of leaching is decomposed with thermokalite by wet grinding mill leaching and produces ultra-fine solitary stone ore decomposing materials.The present invention is using mill leaching and two sections of modes of working continuously of leaching, realize soaking while grinding and its equipment technique, improve monazite resolution ratio and metal recovery rate, the caustic digestion period is shortened, process costs are reduced, has saved energy consumption, time, greatly improve operating environment, production efficiency is improved, becomes adaptable one kind, cleaning, the method for efficiently, quickly handling monazite, has achieved the effect that reasonable, economical, environmental protection, energy-efficient treatment monazite.
Description
Technical field
The present invention relates to a kind of processing method of Rare Earth Mine, a kind of thermokalite resolution process monazite concentrate is referred in particular to
Method is mainly used for improving the method for decomposing monazite, belongs to technical field of wet metallurgy.
Background technique
Rare earth element is known as " industrial vitamin ", has excellent magnetic, light, the electrical property that can not replace, and produces to improving
Moral character energy increases product variety, and improving production efficiency has great function.Since rare-earth action is big, dosage has become improvement less and produces
The important element of product structure, technical progress of industry of increasing technology content, promote.Be widely applied to metallurgy, military affairs, new material,
The fields such as petrochemical industry, glass ceramics, agricultural.
Monazite is a kind of Ree-phospeate Minerals (based on cerium, lanthanum, a small amount of praseodymium, yttrium etc.), normal thoriated, zirconium etc..Industry
On generally with caustic soda come resolution process monazite concentrate.
And traditional monazite decomposition technique, usually monazite concentrate is obtained after ore grinding (generally using Raymond mill) process
To monazite concentrate miberal powder, monazite miberal powder is configured to enter in proportion with soda bath has the decomposer of collet heating device to stir
The high temperature for mixing uniformly and being heated to (140 ~ 160) DEG C, persistently stirs and keeps the temperature (8 ~ 18) hour, reach the mesh that rare earth is separated with phosphorus
, obtain the mixed slurry of rare earth hydrate and tertiary sodium phosphate, other hydroxide.It is obtained again by washing, filter progress
Rare earth hydrate enters following Rare Earth Separation process.
The major defect of traditional handicraft and equipment is: noise is big, and the dust that Grinding procedure generates is big, to production work field
Surrounding enviroment have extreme influence in one's power；Ore grinding and caustic digestion need to be carried out independently, it is desirable that temperature is high and soaking time is long；Operation peace
Full property is low, and energy consumption is high.So traditional handicraft does not reach the requirement of energy-saving and emission-reduction, and the leaching rate of acidleach process rare earth only has
(85 ~ 90) %.Therefore improving this seems necessary.
By patent retrieval do not find have with the patent literature report of same technique of the present invention, have certain relationship with the present invention
Patent mainly have it is following:
1, the invention of Patent No. CN201510189432, entitled " a kind of device and method that Rare Earth Mine alkaline process decomposes " are special
Benefit, which disclose the device and method that a kind of Rare Earth Mine alkaline process decomposes, and the alkaline process resolving device includes: cylindrical type
Grinding container, a high speed agitator is set in grinding container and equipped with dress abrasive media, be arranged on the outside of grinding container it is external plus
Heat, grinding container are equipped with inlet port and outlet port, and monazite and liquid alkaline pass through the grinding and stirring of abrasive media in the apparatus
Act on reaction of decomposing.The patent also provides the method for decomposing Rare Earth Mine using Rare Earth Mine alkaline process.Machine is made full use of in reaction
Tool power activation, caustic digestion process and monazite grinding be combined with each other, and improve the total resolution ratio of Rare Earth Mine.It realizes dilute to tradition
Grinding and two integrated processes of caustic digestion during native mine alkaline process, reduce equipment and land occupation, and simultaneous grinding is reacted in wet process
It is carried out under reactiveness, avoids existing radioactive dust pollution during dry grinding.
2, Patent No. CN201510189443, entitled " a kind of alkaline process decomposes the technique of mengite rare-earth mine and its sets
It is standby " patent of invention, which disclose technique and its equipment that a kind of alkaline process decomposes mengite rare-earth mine, alkaline process decomposes only
During occupying stone Rare Earth Mine, accurate, automatic addition monazite miberal powder, solid caustic soda are realized using metering-type self-conveyor feed and flowmeter
And lye, into reaction of high order slot after reactive tank is heated using Far-infrared Heating mode.Using solid caustic soda and recycling
The charging of caustic soda feed liquid ingredient, it can be achieved that concentration of lye it is automatic with preparation, which avoids batch in traditional mode of production from matching
Expect the dust pollution question generated, simultaneous reactions process is carried out in totally-enclosed system, and the pollution for also avoiding radioactive dust is asked
Topic；Far-infrared Heating mode heating surface (area) (HS is big, it can be achieved that upper, middle and lower Discrete control temperature in the kettle；Heating method is safe and reliable,
Long service life, operation is noiseless, heats energy saving 30%-50% than former conduction oil, steam.
3, Patent No. CN201520243965, a kind of entitled " mengite rare-earth mine alkaline process using Far-infrared Heating
The utility model patent of decomposing system ", which disclose a kind of mengite rare-earth mine alkaline process decomposition using Far-infrared Heating
System, the system include ingredient part and reactive moieties, and the ingredient part includes: that ingredient stirs, concentrate spiral claims
Metering feeder, solid caustic soda spiral Weighing feeder, liquid alkaline metering, slurry discharge pipe, mashing pump, slurry flow control dress
It sets；The reactive moieties include reaction of high order slot and specific gravity detector, and the reactive tank includes: slurry feed mouth, reaction
Connecting line, temp detecting controller, reactive tank drain hole between slot stirring, far-infrared heater, grade.Using spiral poidometer
Measure feeder and flowmeter ingredient, it is ensured that equipment automatically-controlled continuous ingredient；It is reacted in totally-enclosed system, solves and put
Penetrating property dust pollution question；Far-infrared Heating heats energy saving 30-50% compared with steam；It is solved using specific gravity monitoring mode
Line traffic control decomposition reaction process problem.
Although these above-mentioned patents are directed to the resolution process of some Rare Earth Mines, it was also proposed that some improved technology sides
A kind of technique of alkaline process processing Rare Earth Mine disclosed in case, especially CN201510189432, though the patent also proposed one kind
Alkaline process decomposes and the process of wet grinding processing monazite, but the alkaline process proposed decomposes and wet grinding is all one
What the grinding container of a cylindrical type was completed, though safely cleaning production may be implemented in this way.But the caustic digestion time is not reduced, temperature
It is also higher than traditional handicraft to spend some, and does not have the function of working continuously, can only be intermittent operation, this virtually increases life
Produce cost.Other patents, by carefully analyzing, all still without proposing that under the premise of guaranteeing environmental protection, realizing reduces temperature, saves
The technical solution of working continuously of time, therefore noted earlier require that temperature is high and soaking time is long；Operational safety is low, energy consumption
High problem still has, and still needs further to be improved.
Summary of the invention
It is an object of the invention to be directed to the resolution process mode of existing monazite, when there are requirement temperature height and keeping the temperature
Between it is long；Operational safety is low, energy consumption it is high the problems such as, propose a kind of resolution process mode of new monazite, it is solitary using this
Treatment temperature can be effectively reduced in the resolution process mode of stone, shortens the processing time, and decomposition more economical, efficiently, environmentally friendly is only
Occupy stone.
In order to reach this purpose, the present invention provides a kind of sides using two sections of thermokalite decomposition technique processing monazites
Method, it is characterised in that: handle monazite material using two sections of operation modes of mill leaching and leaching；First to solitary in immersing-by-grinding machine
Stone material carries out wet grinding mill leaching, then in the material input monazite caustic digestion slot that wet grinding mill is leached, carries out thermokalite and decompose stirring
It leaches, two sections of operation modes of leaching is decomposed with thermokalite by wet grinding mill leaching and produce ultra-fine solitary stone ore decomposing materials.
Further, it is described first immersing-by-grinding machine carry out wet grinding mill leaching be monazite material is put into ultra-fine immersing-by-grinding machine into
Row wet grinding mill leaching processing.
Further, wet grinding mill leaching processing is to mix monazite material, water and solid caustic soda in stirred tank
Pulp is uniform, and heat temperature raising；Pulp heating after the completion of, using in immersing-by-grinding machine mill leaching medium to thermal material constantly hit into
Capable soaking while grinding and its equipment.
It is further, described that monazite material, water and solid caustic soda mixed pulp uniformly in stirred tank is to utilize
Mixing pulp blender monazite material, water and the solid caustic soda in stirred tank are stirred, stirring linear velocity be 5 ~
10m/s, so that material mixing pulp is uniform, quickly stirring is conducive to the dissolution of solid base and promotes heating speed；Described adds
Heat heating refers to that by slurry temperature control, it is 5 ~ 90min that the time of leaching is ground at 70 ~ 150 DEG C, and the linear velocity of immersing-by-grinding machine impeller is
10—16m/s.The weight proportion of monazite material and solid base is 1:0.8-1.4；The concentration 30 ~ 70% of liquid alkaline；Liquid-solid ratio 1.5
~3:1。
Further, it is one such for aluminium oxide, zirconium oxide to soak medium for the mill.
Further, the immersing-by-grinding machine be horizontal ultra-fine immersing-by-grinding machine, monazite material from horizontal ultra-fine immersing-by-grinding machine one
Head charging, other end discharging, realizes continuous feed；Continuous discharge reaches centre of working continuously and is not required to stop because feeding and discharging
The state only run.
Further, after thermokalite decomposition leaching is wait grind leaching, the material input that mill has been soaked is solitary
In crystal soda decomposer, further thermokalite decomposition is carried out by stirring, heating, heat preservation, to after the reaction was completed, thermokalite be decomposed and is stirred
The material of leaching is sent into next process.
Further, described to carry out thermokalite to decompose being that grind the material soaked input solely by stirring, heating, heat preservation
Occupy in crystal soda decomposer, the material being directed in monazite caustic digestion slot while stirring heats up, in stirred tank press alkali and
The slurry temperature that monazite proportion mixes up is controlled at 125-150 DEG C, and this is kept to spend 1-10h of temperature；The linear speed of the stirring
Degree is (5-10) m/s.The weight proportion of monazite material and solid base is 1:0.8-1.4.The concentration 30 ~ 70% of alkali；Liquid-solid ratio
2~3:1。
Further, the monazite material is the monazite concentrate of REO (50 ~ 65) %, and the size of monazite is -20
~ -100 mesh.
Further, the solid base is sheet, powdery, granular sodium hydroxide, one in potassium hydroxide
Kind.
Further, the heating method be oil bath, in steam, one of electric heating.
The present invention has the advantages that
It is compared with the prior art, the method for of the invention two sections thermokalite decomposition technique processing monazites of working continuously has following
Advantage:
1, Grinding procedure is omitted in new process, and traditional handicraft needs ore grinding；
2, the temperature of new process reduces 10-35 DEG C than traditional handicraft；
3, the extraction time of new process only has 27.8-the 62.5% of traditional handicraft；And can one charging, other end come out company
Continuous operation.
4, new process low noise, without dust, can accomplish the discharge of no gas；Traditional handicraft noise is big, dust is more, has gas row
It puts.
In brief, the method for two sections of thermokalite decomposition technique processing monazites of the present invention, improves caustic digestion monazite
Efficiency shortens the caustic digestion period, reduces process costs, has saved energy consumption, time, greatly improves operating environment, improves
Production efficiency.So that the method becomes adaptable one kind, cleaning, efficient, quickly processing monazite method, conjunction is reached
Reason, economy, the effect of environmental protection treatment monazite, have great popularization value.
Detailed description of the invention
Fig. 1 is the process flow chart that the present invention is implemented.
Specific embodiment
It is next in the following with reference to the drawings and specific embodiments that the present invention is further explained.
Example 1:
In domestic professional equipment, by the monazite (content REO51%) of -100 mesh, by monazite: caustic soda=1:1.4 weight ratio
It calculates, 55% lye is prepared in professional equipment, takes lye: the weight calculation of monazite=2.5:1 ratio；Lye is transported to profession
The stirring of equipment high speed, monazite are then slowly added in the professional equipment, so that slurry is heated to 100-by external heating device
130 DEG C, it is pumped into immersing-by-grinding machine soaking while grinding and its equipment, reaction time 40min, immersing-by-grinding machine revolving speed 2200r/min, immersing-by-grinding machine medium is oxidation
Zirconium.Slurry enters immersing-by-grinding machine from immersing-by-grinding machine one end；Slurry after mill leaching is directly sent from immersing-by-grinding machine outlet to stirred tank, through rising
Temperature is to 130-140 DEG C；After insulated and stirred reacts 4h, alkali cake is obtained by filtration in washing.The resolution ratio of phosphorus is 99.6%, and subsequent hydrochloric acid is molten
The leaching rate that liquid leaches rare earth is 99.67%.Implementing process is as shown in Fig. 1.
Example 2:
In domestic professional equipment, by the monazite (content REO56%) of -80 mesh, by monazite: caustic soda=1:1.3 weight ratio
It calculates, 50% lye is prepared in professional equipment, takes lye: the weight calculation of monazite=2.2:1 ratio；Lye is transported to profession
The stirring of equipment high speed, monazite are then slowly added in professional equipment, so that slurry is heated to 90-110 by external heating device
DEG C, it is pumped into immersing-by-grinding machine soaking while grinding and its equipment, reaction time 25min, immersing-by-grinding machine revolving speed 2000r/min, immersing-by-grinding machine medium is zirconium oxide, slurry
Material enters immersing-by-grinding machine from immersing-by-grinding machine one end；Slurry after mill leaching is directly sent from immersing-by-grinding machine outlet to stirred tank, through being warming up to
130—140℃；After insulated and stirred reacts 4h, alkali cake is obtained by filtration in washing.The resolution ratio of phosphorus is 98.5%, subsequent hydrochloric acid solution leaching
The leaching rate of rare earth is 98.96% out.
Example 3:
In domestic professional equipment, by the monazite (content REO62%) of -50 mesh, by monazite: caustic soda=1:1.2 weight ratio
It calculates, 45% lye is prepared in professional equipment, takes lye: the weight calculation of monazite=2.8:1 ratio；Lye is transported to profession
The stirring of equipment high speed, monazite are then slowly added in professional equipment, so that slurry is heated to 80-100 by external heating device
DEG C, it is pumped into immersing-by-grinding machine after high-speed stirred, reacts 15min, immersing-by-grinding machine revolving speed 2300r/min, immersing-by-grinding machine medium is aluminium oxide, slurry
Enter immersing-by-grinding machine from immersing-by-grinding machine one end；Slurry after mill leaching is directly sent from immersing-by-grinding machine outlet to stirred tank, through being warming up to
130—140℃；After insulated and stirred reacts 3.5h, alkali cake is obtained by filtration in washing.The resolution ratio of phosphorus is 91.1%, subsequent hydrochloric acid solution
The leaching rate for leaching rare earth is 91.29%.
Above-mentioned listed embodiment, only carries out clear, complete description to technical solution of the present invention in conjunction with attached drawing；It is aobvious
So, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
According to above-described embodiment as can be seen that handling monazite using two sections of thermokalite decomposition techniques the present invention relates to a kind of
Method, it is characterised in that: monazite material is handled with two segmented mode of leaching using mill leaching；First to monazite in immersing-by-grinding machine
Material carries out wet grinding mill leaching, then in the material input monazite caustic digestion slot that wet grinding mill is leached, carries out thermokalite and decompose stirring leaching
Out, two segmented mode of leaching is decomposed with thermokalite by wet grinding mill leaching and produces ultra-fine solitary stone ore decomposing materials.
Further, it is described first immersing-by-grinding machine carry out wet grinding mill leaching be monazite material is put into ultra-fine immersing-by-grinding machine into
Row wet grinding mill leaching processing.
Further, wet grinding mill leaching processing is to mix monazite material, water and solid caustic soda in stirred tank
Pulp is uniform, and heat temperature raising；Pulp heating after the completion of, using in immersing-by-grinding machine mill leaching medium to thermal material constantly hit into
Capable soaking while grinding and its equipment.
It is further, described that monazite material, water and solid caustic soda mixed pulp uniformly in stirred tank is to utilize
Mixing pulp blender monazite material, water and the solid caustic soda in stirred tank are stirred, stirring linear velocity be 5 ~
10m/s, so that material mixing pulp is uniform, quickly stirring is conducive to the dissolution of solid base and promotes heating speed；Described adds
Heat heating, which refers to, controls slurry temperature at 70 ~ 150 DEG C, and the time of circulation mill leaching is 5 ~ 90min, the linear velocity of immersing-by-grinding machine impeller
For 10-16m/s；The weight proportion of monazite material and solid base is 1:0.8-1.4；The concentration 30 ~ 70% of liquid alkaline；Liquid-solid ratio
1.5~3:1。
Further, it is one such for aluminium oxide, zirconium oxide to soak medium for the mill.
Further, the immersing-by-grinding machine be horizontal ultra-fine immersing-by-grinding machine, monazite material from horizontal ultra-fine immersing-by-grinding machine one
Head charging, other end discharging, realizes continuous feed；Continuous discharge reaches and is not required to stop transporting because feeding and discharging among operation
Capable state.
Further, after thermokalite decomposition leaching is wait grind leaching, the material input that mill has been soaked is solitary
In crystal soda decomposer, further thermokalite decomposition is carried out by stirring, heating, heat preservation, to after the reaction was completed, thermokalite be decomposed and is stirred
The material of leaching is sent into next process.
Further, described to carry out thermokalite to decompose being that grind the material soaked input solely by stirring, heating, heat preservation
Occupy in crystal soda decomposer, the material being directed in monazite caustic digestion slot while stirring heats up, in stirred tank press alkali and
The slurry temperature that monazite proportion mixes up is controlled at 125-150 DEG C, and this is kept to spend 1-10h of temperature；The linear speed of the stirring
Degree is (5-10) m/s；The weight proportion of monazite material and solid base is 1:0.8-1.4；The concentration 30 ~ 70% of liquid alkaline；Liquid is solid
Than 2 ~ 3:1.
Further, the monazite material is the monazite concentrate of REO (50 ~ 65) %, and the size of monazite is -20
~ -100 mesh.
Further, the solid base is sheet, powdery, granular sodium hydroxide, one in potassium hydroxide
Kind.
Further, the heating method be oil bath, in steam, one of electric heating.
The present invention has the advantages that
It is compared with the prior art, the method for of the invention two sections thermokalite decomposition technique processing monazites of working continuously has following
Advantage:
1, Grinding procedure is omitted in new process, and traditional handicraft needs ore grinding；
2, the temperature of new process reduces (10-35) DEG C than traditional handicraft；
3, the extraction time of new process only has (27.8-62.5) % of traditional handicraft；And it can work continuously.
4, new process low noise, without dust, can accomplish the discharge of no gas；Traditional handicraft noise is big, dust is more, has gas row
It puts.
In brief, the method for two sections of thermokalite decomposition technique processing monazites of the present invention, improves caustic digestion monazite
Efficiency shortens the caustic digestion period, reduces process costs, has saved energy consumption, time, greatly improves operating environment, improves
Production efficiency.So that the method becomes adaptable one kind, cleaning, efficient, quickly processing monazite method, conjunction is reached
Reason, economy, the effect of environmental protection treatment monazite, have great popularization value.
Claims (10)
1. a kind of method using two sections of thermokalite decomposition technique processing monazites, it is characterised in that: using mill leaching and leaching
Two segmented modes handle monazite material；Wet grinding mill leaching first is carried out to monazite material in immersing-by-grinding machine, then wet grinding mill is leached
Material inputs in monazite caustic digestion slot, carries out thermokalite and decomposes leaching, decomposes leaching with thermokalite by wet grinding mill leaching
Two segmented modes produce ultra-fine solitary stone ore decomposing materials.
2. utilizing the method for two sections of thermokalite decomposition technique processing monazites as described in claim 1, it is characterised in that: described
First carrying out wet grinding mill leaching in immersing-by-grinding machine is to put into monazite material to carry out wet grinding mill leaching processing in ultra-fine immersing-by-grinding machine.
3. utilizing the method for two sections of thermokalite decomposition technique processing monazites as claimed in claim 2, it is characterised in that: described
Wet grinding mill leaching processing is that monazite material, water and solid caustic soda mix to pulp in stirred tank is uniform, and heat temperature raising；Pulp
After the completion of heating, the soaking while grinding and its equipment carried out is hit to the continuous of thermal material using the mill leaching medium in immersing-by-grinding machine.
4. utilizing the method for two sections of thermokalite decomposition technique processing monazites as claimed in claim 3, it is characterised in that: described
It is using mixing pulp blender in stirred tank that monazite material, water and solid caustic soda, which are mixed pulp uniformly in stirred tank,
Monazite material, water and solid caustic soda be stirred, stirring linear velocity be 5 ~ 10m/s so that material mixing pulp is equal
Even, quickly stirring is conducive to the dissolution of solid base and promotes heating speed；The heat temperature raising, which refers to, controls slurry temperature
At 70 ~ 150 DEG C, the time for grinding leaching is 5 ~ 90min, and the linear velocity of immersing-by-grinding machine impeller is 10-16m/s；Monazite material and solid
The weight proportion of alkali is 1:0.8 ~ 1.4；The concentration 30 ~ 70% of alkali；1.5 ~ 3:1 of liquid-solid ratio.
5. utilizing the method for two sections of thermokalite decomposition technique processing monazites as claimed in claim 3, it is characterised in that: described
Mill leaching medium is aluminium oxide, zirconium oxide is one such.
6. utilizing the method for two sections of thermokalite decomposition technique processing monazites as claimed in claim 2, it is characterised in that: described
Immersing-by-grinding machine is horizontal ultra-fine immersing-by-grinding machine, a charging of the monazite material from horizontal ultra-fine immersing-by-grinding machine, other end discharging, the company of realization
Continuous charging；Continuous discharge reaches and is not required to the state out of service because feeding and discharging among operation.
7. utilizing the method for two sections of thermokalite decomposition technique processing monazites as described in claim 1, it is characterised in that: described
Thermokalite decompose leaching be wait grind leaching after, the material that soak of mill is inputted in monazite caustic digestion slot, by stirring, is added
Heat, heat preservation carry out further thermokalite decomposition, to after the reaction was completed, the material that thermokalite decomposes leaching is sent into lower one of work
Sequence.
8. utilizing the method for two sections of thermokalite decomposition technique processing monazites as claimed in claim 5, it is characterised in that: described
It carry out thermokalite by stirring, heating, heat preservation to decompose being stirred on one side that will grind in the material soaked input monazite caustic digestion slot
It heats up on one side to the material in monazite caustic digestion slot, matches the slurry temperature mixed up by alkali and monazite in stirred tank
Control keeps this to spend 1-10h of temperature at 125-150 DEG C；The linear velocity of the stirring is 5-10m/s；Monazite material with
The weight proportion of solid base is 1:0.8-1.4；The concentration 30 ~ 70% of liquid alkaline；2 ~ 3:1 of liquid-solid ratio.
9. utilizing the method for two sections of thermokalite decomposition technique processing monazites as described in claim 1, it is characterised in that: described
Monazite material is the monazite concentrate of REO50 ~ 65%, and the size of monazite is 20 ~ 100 mesh；The solid base be sheet,
One of powdery, granular sodium hydroxide, potassium hydroxide.
10. utilizing the method for two sections of thermokalite decomposition technique processing monazites as described in claim 1, it is characterised in that: described
Heating method be oil bath, in steam, one of electric heating.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111020242A (en) * | 2019-09-09 | 2020-04-17 | 湖南中核金原新材料有限责任公司 | Process method for smelting and separating uranium, thorium and rare earth from monazite concentrate |
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| CN106148692A (en) * | 2015-04-21 | 2016-11-23 | 永州市湘江稀土有限责任公司 | A kind of alkaline process decomposes technique and the equipment thereof of mengite rare-earth mine |
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| CN111020242B (en) * | 2019-09-09 | 2021-07-20 | 湖南中核金原新材料有限责任公司 | Process method for smelting and separating uranium, thorium and rare earth from monazite concentrate |
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Application publication date: 20190510 |