CN106148692A - A kind of alkaline process decomposes technique and the equipment thereof of mengite rare-earth mine - Google Patents
A kind of alkaline process decomposes technique and the equipment thereof of mengite rare-earth mine Download PDFInfo
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- CN106148692A CN106148692A CN201510189443.4A CN201510189443A CN106148692A CN 106148692 A CN106148692 A CN 106148692A CN 201510189443 A CN201510189443 A CN 201510189443A CN 106148692 A CN106148692 A CN 106148692A
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- earth mine
- caustic soda
- alkaline process
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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
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Abstract
The invention discloses a kind of alkaline process and decompose technique and the equipment thereof of mengite rare-earth mine, during alkaline process decomposes mengite rare-earth mine, use metering-type self-conveyor feed and effusion meter to realize accurately, automatically add monazite breeze, solid caustic soda and alkali liquor, after entering reaction of high order groove, use Far-infrared Heating mode that reactive tank is heated.Use the Caustic soda feed liquid dispensing charging of solid caustic soda and recovery, the preparation automatically that can realize concentration of lye is standby, this technical process avoids the dust pollution question that in traditional mode of production, batch dispensing produces, and simultaneous reactions process is carried out in totally-enclosed system, it also avoid the pollution problem of radioactive dust；Far-infrared Heating mode heating surface (area) (HS is big, can realize upper, middle and lower Discrete control temperature in the kettle；Mode of heating is safe and reliable, and service life is long, runs noiselessness, than former conduction oil, steam heating energy efficient 30%-50%.
Description
Technical field
The present invention relates to a kind of alkaline process and decompose technique and the equipment thereof of mengite rare-earth mine, specifically one
The alkaline process using Far-infrared Heating decomposes technique and the equipment thereof of mengite rare-earth mine, belongs to rare-earth smelting and produces
Field.
Background technology
Monazite is a kind of industry Ree-phospeate Minerals, is generally easy to sort, solitary stone ore in the concentrate obtained
Thing content is up to more than 95%.Industrial general employing Caustic soda decomposition method processes monazite concentrate.(" rare earth ",
The first edition first volume, metallurgical industry publishing house 1978, P221-237.)
Industrial, traditional handicraft is to use caustic lye of soda and concentrate proportionally to prepare entrance decomposer, and decomposer makes
Reaction is made to carry out at relatively high temperatures with steam jacket heating.Continuous print charging and discharging, it is ensured that decomposition temperature
Lower reaction, is converted by alkali and reaches the purpose that rare earth separates with phosphorus, obtains the mixed of rare earth hydrate and tertiary sodium phosphate
Close serosity, produce subsequently into following operation.
Tradition monazite decomposition reaction equipment flowsheet is long, steam mode of heating Shortcomings: be not easy to automatically
Control, when steam pressure not enough or unstable time, resolution ratio has fluctuation, and the energy of decomposition and consumption is the most,
The resolution ratio of industrial monazite is the highest (generally about 96%), and unstable, causes rare earth to lose.
In recent years, conduction oil reactive tank is gradually available in monazite decomposition technique, patent CN201110358861.3
Disclosing a kind of heat-conducting oil heating reactive tank system, the heating of this system is relatively uniform, but due to heat-conducting oil heating
Power consumption is big, and maximum temperature is affected temperature by conduction oil material and improves limited, and conduction oil domestic demand adds biphenyl
Mixture, when at high temperature oil and gas leakage and the poisonous and easy shortcomings such as blast.
Tradition monazite decomposition reaction system fails to solve decomposition reaction Process flowchart problem, general by significantly
Degree extends the mode of decomposition reaction time and realizes the highest decomposition efficiency, brings energy consumption to increase and equipment
The problems such as utilization rate is low.
There is system and produce the most airtight in tradition alkaline process isolation, it is easy to brings radioactive dust pollution problem.
Summary of the invention
The invention provides a kind of monazite decomposing system using Far-infrared Heating, by Far-infrared Heating side
Reactive tank is heated by formula, by placed in series between reaction of high order groove, the technical scheme is that
Described equipment includes that dispensing part and reactive moieties, described dispensing part include: dispensing stirring,
The metering of concentrate spiral Weighing feeder, solid caustic soda spiral Weighing feeder, liquid caustic soda, slurry discharge
Pipe, mashing pump, stream of slurry amount control device；Described reactive moieties includes reaction of high order groove and proportion inspection
Surveying device, described reactive tank includes: the stirring of slurry feed mouth, reactive tank, far-infrared heater, inter-stage
Connecting line, temp detecting controller, reactive tank drain hole.
The reaction of high order groove that described reactive moieties includes uses series system by inter-stage connecting line even
Connect, realize slurry between groove by pressure in gravity flow or groove and carry.
In described reactive moieties, the discharging opening of final stage reactive tank inter-stage connecting line is furnished with proportion monitor,
Being furnished with mashing pump and stream of slurry amount control device between chopped-off head reactive tank and dispensing part, slurry flow controls
Device carries out flow-control by mashing pump after receiving final stage proportion monitor feedback.
Described automatic temperature control includes thermelometer and Temperature Feedback and controls device.
Described far-infrared heater is used in combination with automatic temperature control, the temperature of monitoring measured reaction groove
Degree.
Described Far-infrared Heating can be heated to 800 DEG C, and in reactive tank, temperature can be adjusted between 30-350 DEG C
Whole temperature.
Described reactive tank is in normal pressure or or operation with high pressure.
Described technique specifically includes following steps:
(1) in dispensing part (A), liquid caustic soda, solid base are proportionally added with mengite rare-earth mine,
It is mixed to get uniform sizing material through stirring (1).
(2) use mashing pump (6) that slurry is squeezed into the reactive moieties of the plural serial stage using Far-infrared Heating
(B) reacting, inter-stage realizes slurry between groove by pressure in gravity flow or groove and carries.
(3) discharge outlet than re-detection device, proportion parameter is set, the flow feeding back to charge door is automatic
Adjusting means (7) controls mashing pump and carries out charging control.
Described monazite is the monazite concentrate of 30%REO-65%REO.
Described liquid caustic soda is at least one in sodium hydroxide, potassium hydroxide.
Described technique uses far-infrared heater (10) will decompose with automatic temperature control (12)
Temperature controls between 80 DEG C-350 DEG C.
Described alkali uses solid and liquid caustic soda, measures (4) with solid caustic soda spiral Weighing feeder (3) and liquid caustic soda
Preparation controls at alkali concn to be 20%-75%.
Described liquid caustic soda is to decompose the liquid caustic soda that solitary stone ore reaction Posterior circle reclaims, and concentration is between 10%-30%.
Beneficial effects of the present invention is as follows:
1, dispensing part is added solely by using spiral Weighing feeder and fluid flowmeter to realize according to quantity
Occupying stone ore powder, solid caustic soda and alkali liquor, after dosage bunker stirring mixing, serosity metering is squeezed in reactive moieties.
This dispensing part way can ensure that alkali liquor, solid caustic soda are proportionally prepared according to the fluctuation of concentrate grade with concentrate,
It is easily achieved dispensing automatically-controlled continuous.
2, Far-infrared Heating mode can realize upper, middle and lower Discrete control bath temperature, has heating surface (area) (HS big,
The feature that temperature is easy to control；This mode of heating is long for service life simultaneously, runs noiselessness, adds than steam
Hot energy efficient 30%-50%, temperature control more more environmentally friendly than heat-conducting oil heating reacts more timely.Far-infrared Heating
And be used in combination with temp detecting controller, bath temperature can be monitored at any time, solve other heating means and exist
Temperature accurately control difficulty.
4, reactive tank final stage discharging opening slurry specific gravity monitor is used to control the flow of serosity, it is achieved decomposition reaction
Reaction prison in On-line Control, it is to avoid decompose not enough or long time decomposition, it is provided that equipment service efficiency.
5, course of reaction is carried out in totally-enclosed system, particularly metering-type screw feeding mode, solves solely
Occupy the pollution problem of radioactive dust during alkalium method processes and accurate dosing problem.
Accompanying drawing explanation
Fig. 1 illustrates a kind of mengite rare-earth mine alkaline process decomposing system using Far-infrared Heating.It includes
The stirring of reactive moieties A:1. dispensing, 2. concentrate spiral Weighing feeder, 3. solid spiral poidometer
Amount feeder, 4. liquid caustic soda metering, 5. slurry discharge pipe, 6. mashing pump, 7. stream of slurry amount control device.
The stirring of reactive moieties B:8. slurry feed mouth, 9. reactive tank, 10. far-infrared heater, 11. inter-stages are even
Adapter road, 12. temp detecting controllers, 13. proportion monitors, 14. reactive tank drain holes.
Detailed description of the invention
Embodiment 1
From dispensing part the proportioning automatic feed that sets is added-325 mesh 51.2% monazite
(ThO2 content 3.9%), adds alkali at solid and liquid caustic soda charging aperture simultaneously and regulates the alkali liquor that its concentration is 45%
Liquid-solid ratio of sizing mixing is 3:1, and after stirring and evenly mixing, serosity passes sequentially through the reactive tank of 4 grades of Far-infrared Heating,
React at 140 DEG C, realize serosity feeding quantity and charging rate by slurry specific gravity monitoring is controlled serosity pump
Control, serosity, was obtained by final stage discharging opening continuous-stable in the time of staying at reactive tank after 11.5 hours
Must decompose slurry, through filtration washing, it is 97.7% that analysis obtains concentrate resolution ratio.
Comparative example 1
Monazite (ThO2 content 3.9%) by the 51.2% of-325 mesh adds in traditional agitator tank, adds simultaneously
Entering the alkali liquor that concentration is 45% to size mixing, liquid-solid ratio is 3:1, after using the mixing of steam heated and stirred, and cell body temperature
Degree is 130-150 DEG C of fluctuation, and after reacting 17.5 hours, after finally obtaining decomposition, reaction paste is through filtration washing,
Analyzing in alkali cake and calculate after the content of rare earth hydrate, concentrate resolution ratio is 95.8%.
Contrast with comparative example 1, after showing the response system using the present invention and the technique matched, directly
Controlling the response time by proportion supervising device, the concentrate resolving time reduces, and resolution ratio increases.With
Time, whole course of reaction achieves process control, and automaticity improves, and carries out, nothing in enclosed system
Radioactive dust pollutes.
Embodiment 2
From dispensing part the proportioning automatic feed that sets is added-325 mesh 30% monazite (ThO2
Content 3.1%), add alkali at solid and liquid caustic soda charging aperture simultaneously and regulate the alkali liquor adjusting slurry that its concentration is 65%
Gu than for 1.5:1, after stirring and evenly mixing, serosity passes sequentially through the reactive tank of 4 grades of Far-infrared Heating, at 80 DEG C
Lower reaction, realizes serosity feeding quantity and the control of charging rate by slurry specific gravity monitoring is controlled serosity pump
System, serosity in the time of staying at reactive tank, is obtained by final stage discharging opening continuous-stable and divides after 12.5 hours
Solving slurry, through filtration washing, it is 96.5% that analysis obtains concentrate resolution ratio.
Embodiment 3
From dispensing part the proportioning automatic feed that sets is added-325 mesh 51.3% monazite
(ThO2 content 3.9%), adds alkali at solid and liquid caustic soda charging aperture simultaneously and regulates the alkali liquor that its concentration is 50%
Liquid-solid ratio of sizing mixing is 3:1, and after stirring and evenly mixing, serosity passes sequentially through the reactive tank of 4 grades of Far-infrared Heating,
React at 200 DEG C, realize serosity feeding quantity and charging rate by slurry specific gravity monitoring is controlled serosity pump
Control, serosity, was obtained by final stage discharging opening continuous-stable in the time of staying at reactive tank after 11.0 hours
Must decompose slurry, through filtration washing, it is 98.7% that analysis obtains concentrate resolution ratio.
Claims (11)
1. the equipment of an alkaline process decomposition mengite rare-earth mine, it is characterised in that described equipment includes dispensing portion
Dividing (A) and reactive moieties (B), described dispensing part (A) including: dispensing stirring (1), concentrate spiral shell
Rotation Weighing feeder (2), solid caustic soda spiral Weighing feeder (3), liquid caustic soda metering (4), slurry discharge
Pipe (5), mashing pump (6), stream of slurry amount control device (7)；Described reactive moieties (B) includes reaction of high order
Groove and proportion detector (13), described reactive tank includes: slurry feed mouth (8), reactive tank stirring (9), remote
Infrared heater (10), inter-stage connecting line (11), temp detecting controller (12), reactive tank drain hole (14).
Alkaline process the most according to claim 1 decomposes the equipment of mengite rare-earth mine, it is characterised in that described
The reaction of high order groove that includes of reactive moieties (B) use series system by inter-stage connecting line (11) even
Connect, realize slurry between groove by pressure in gravity flow or groove and carry.
Alkaline process the most according to claim 1 decomposes the equipment of mengite rare-earth mine, it is characterised in that described
Reactive moieties (B) in, the discharging opening of final stage reactive tank inter-stage connecting line (11) is furnished with proportion monitor
(14), it be furnished with mashing pump (6) and stream of slurry amount control device (7), slurry between chopped-off head reactive tank and dispensing part
Volume control device (7) carries out flow-control by mashing pump (6) after receiving final stage proportion monitor (14) feedback.
Alkaline process the most according to claim 1 decomposes the equipment of mengite rare-earth mine, it is characterised in that described
Temp detecting controller (12) include thermelometer and Temperature Feedback and control device, with the reddest
External heating device is used in combination.
Alkaline process the most according to claim 1 decomposes the equipment of mengite rare-earth mine, it is characterised in that described
Far-infrared Heating can be heated to 800 DEG C, in reactive tank, temperature can adjust temperature between 30-350 DEG C.
Alkaline process the most according to claim 1 decomposes the equipment of mengite rare-earth mine, it is characterised in that described
Reactive tank be in normal pressure or or operation with high pressure.
7. the alkaline process that a kind utilizes described in any claim of claim 1-6 decomposes mengite rare-earth mine equipment and divides
The technique solving mengite rare-earth mine, it is characterised in that described technique specifically includes following steps:
(1) in dispensing part (A), liquid caustic soda, solid base are proportionally added with mengite rare-earth mine, warp
Cross stirring (1) and be mixed to get uniform sizing material.
(2) use mashing pump (6) that slurry is squeezed into the reactive moieties of the plural serial stage using Far-infrared Heating
(B) reacting, inter-stage realizes slurry between groove by pressure in gravity flow or groove and carries.
(3) discharge outlet than re-detection device, proportion parameter is set, the flow feeding back to charge door is automatic
Adjusting means (7) controls mashing pump and carries out charging control.
The technique that alkaline process the most according to claim 7 decomposes mengite rare-earth mine, it is characterised in that described
The monazite concentrate that monazite is 30%REO-65%REO.
The technique that alkaline process the most according to claim 7 decomposes mengite rare-earth mine, it is characterised in that described
Liquid caustic soda be at least one in sodium hydroxide, potassium hydroxide, described liquid caustic soda can be surplus in course of reaction
The remaining alkali reclaimed.
The technique that alkaline process the most according to claim 7 decomposes mengite rare-earth mine, it is characterised in that described
Technique use far-infrared heater (10) decomposition temperature to be existed with temp detecting controller (12)
Control between 80 DEG C-350 DEG C.
The technique that 11. alkaline process according to claim 7 decompose mengite rare-earth mine, it is characterised in that described
Alkali use solid caustic soda and liquid caustic soda, control with solid caustic soda spiral Weighing feeder (3) and liquid caustic soda metering (4) preparation
System is 20%-75% at alkali concn.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189443.4A CN106148692B (en) | 2015-04-21 | 2015-04-21 | A kind of alkaline process decomposes the technique and its equipment of mengite rare-earth mine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510189443.4A CN106148692B (en) | 2015-04-21 | 2015-04-21 | A kind of alkaline process decomposes the technique and its equipment of mengite rare-earth mine |
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| CN106148692A true CN106148692A (en) | 2016-11-23 |
| CN106148692B CN106148692B (en) | 2018-06-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735705A (en) * | 2019-01-31 | 2019-05-10 | 湖南省欧华科技有限公司 | A method of utilizing two sections of thermokalite decomposition technique processing rare earth ore concentrates of working continuously |
| CN109735706A (en) * | 2019-01-31 | 2019-05-10 | 湖南中核金原新材料有限责任公司 | A method of monazite is handled using two sections of thermokalite decomposition techniques |
| CN112961995A (en) * | 2020-12-02 | 2021-06-15 | 湖南中核金原新材料有限责任公司 | Method for improving monazite concentrate alkali decomposition rate |
| CN113444897A (en) * | 2021-07-06 | 2021-09-28 | 黄晓红 | Liquid caustic soda decomposition device of high-grade misch metal concentrate |
| CN116590547A (en) * | 2023-05-29 | 2023-08-15 | 山东域潇有色新材料有限公司 | Device and process for decomposing and dissolving monazite mineral powder by alkaline method |
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| CN204589269U (en) * | 2015-04-21 | 2015-08-26 | 永州市湘江稀土有限责任公司 | A kind of mengite rare-earth mine alkaline process decomposing system adopting far-infrared heating |
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Patent Citations (4)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735705A (en) * | 2019-01-31 | 2019-05-10 | 湖南省欧华科技有限公司 | A method of utilizing two sections of thermokalite decomposition technique processing rare earth ore concentrates of working continuously |
| CN109735706A (en) * | 2019-01-31 | 2019-05-10 | 湖南中核金原新材料有限责任公司 | A method of monazite is handled using two sections of thermokalite decomposition techniques |
| CN109735705B (en) * | 2019-01-31 | 2021-08-06 | 湖南欧华科技有限公司 | Method for treating rare earth concentrate by utilizing two-stage continuous operation thermokalite decomposition process |
| CN112961995A (en) * | 2020-12-02 | 2021-06-15 | 湖南中核金原新材料有限责任公司 | Method for improving monazite concentrate alkali decomposition rate |
| CN113444897A (en) * | 2021-07-06 | 2021-09-28 | 黄晓红 | Liquid caustic soda decomposition device of high-grade misch metal concentrate |
| CN116590547A (en) * | 2023-05-29 | 2023-08-15 | 山东域潇有色新材料有限公司 | Device and process for decomposing and dissolving monazite mineral powder by alkaline method |
| CN116590547B (en) * | 2023-05-29 | 2024-08-23 | 山东域潇有色新材料有限公司 | Device and process for decomposing and dissolving monazite mineral powder by alkaline method |
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Denomination of invention: Technique and facility for decomposing monazite rare earth ore through alkaline method Effective date of registration: 20181026 Granted publication date: 20180622 Pledgee: Qiyang SME credit Company limited by guarantee Pledgor: YONGZHOU XIANGJIANG RIVER RARE EARTH CO., LTD. Registration number: 2018990001000 |