CN116590547A - Device and process for decomposing and dissolving monazite mineral powder by alkaline method - Google Patents
Device and process for decomposing and dissolving monazite mineral powder by alkaline method Download PDFInfo
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- CN116590547A CN116590547A CN202310616941.7A CN202310616941A CN116590547A CN 116590547 A CN116590547 A CN 116590547A CN 202310616941 A CN202310616941 A CN 202310616941A CN 116590547 A CN116590547 A CN 116590547A
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- 239000000843 powder Substances 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 71
- 229910052590 monazite Inorganic materials 0.000 title claims abstract description 71
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 66
- 239000011707 mineral Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000002002 slurry Substances 0.000 claims abstract description 124
- 238000003756 stirring Methods 0.000 claims abstract description 122
- 239000003513 alkali Substances 0.000 claims abstract description 108
- 238000000227 grinding Methods 0.000 claims abstract description 91
- 238000006243 chemical reaction Methods 0.000 claims abstract description 70
- 238000002156 mixing Methods 0.000 claims abstract description 70
- 239000012141 concentrate Substances 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 238000005086 pumping Methods 0.000 claims abstract description 26
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 238000004090 dissolution Methods 0.000 claims abstract description 14
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 50
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000004321 preservation Methods 0.000 claims description 14
- 238000007790 scraping Methods 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims description 9
- 238000005485 electric heating Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 230000004927 fusion Effects 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 235000010755 mineral Nutrition 0.000 description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 35
- 235000011121 sodium hydroxide Nutrition 0.000 description 15
- 229910052761 rare earth metal Inorganic materials 0.000 description 5
- 238000011049 filling Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 rare earth hydroxide Chemical class 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 2
- 229910052776 Thorium Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 239000011268 mixed slurry Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- 229910052849 andalusite Inorganic materials 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- UXBZSSBXGPYSIL-UHFFFAOYSA-N phosphoric acid;yttrium(3+) Chemical compound [Y+3].OP(O)(O)=O UXBZSSBXGPYSIL-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910052642 spodumene Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 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
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910000164 yttrium(III) phosphate Inorganic materials 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B59/00—Obtaining rare earth metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/02—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to the technical field of preliminary extraction of monazite mineral powder, in particular to an alkali-method decomposition and dissolution device and process of monazite mineral powder. The invention comprises a stirring and mixing device, a slurry grinding device, a stirring and reacting device and a cooling and filtering device, wherein the stirring and mixing device is connected with the slurry grinding device through a coarse slurry pumping device, the slurry grinding device is connected with the stirring and reacting device through a fine slurry pumping device, and the tail end of the stirring and reacting device is connected with the cooling and filtering device. And fully mixing the monazite concentrate powder and the alkali solution by using a stirring and mixing device to form slurry, further grinding the monazite concentrate powder in the alkali solution by using a slurry grinding device to enable the monazite concentrate powder and the alkali solution to undergo further fusion reaction, temporarily storing and reacting the fine slurry formed by the ground monazite concentrate powder and the alkali solution by using the stirring and reacting device, and crystallizing, separating and filtering the solution after the full reaction of the monazite concentrate powder and the alkali solution by using a cooling and filtering device.
Description
Technical Field
The invention relates to the technical field of preliminary extraction of monazite mineral powder, in particular to an alkali-method decomposition and dissolution device and process of monazite mineral powder.
Background
Monazite is one of the main minerals of rare earth metal ore, often contains minerals such as thorium, zirconium and the like, has monoclinic system, fine plate-like crystal, brownish red, yellow or yellowish green color, oil luster or glass luster on the surface, most shell-like to ragged fracture, crisp nature, hardness of 5-5.5 and density of 4.9-5.5g/cm 3 The fluorescent powder emits fresh green fluorescence under the irradiation of ultraviolet light, and is radioactive because of the frequent uranium, thorium and radium, the fluorescent powder is mainly produced in peganite, granite and related post-period mineral deposits, and the symbiotic minerals comprise bastnaesite, xenotime, spodumene, zircon, andalusite, apatite, rutile, ilmenite, fluorite, barite or columbite and the like.
The method is characterized in that the method comprises the steps of mixing and stirring the monazite mineral powder and caustic soda solution in a decomposing tank with a jacket heating device uniformly, heating to a high temperature of 140-160 ℃, continuously stirring and preserving heat for 8-18 hours to achieve the purpose of separating rare earth from phosphorus, obtaining mixed slurry of rare earth hydroxide, trisodium phosphate and other hydroxides, and then washing and filtering the obtained mixed slurry of rare earth hydroxide to obtain the rare earth hydroxide.
The reaction process of the monazite mineral powder and the caustic soda solution is slower, because the monazite mineral powder and the caustic soda solution are not fully contacted, the granularity and the bonding degree of the monazite mineral powder easily influence the reaction speed with the caustic soda solution, so the reaction efficiency is low, and the processing efficiency of the mineral powder is seriously influenced.
Disclosure of Invention
In order to improve the reaction speed of monazite mineral powder and caustic soda solution, the invention provides a device and a process for decomposing and dissolving the monazite mineral powder by an alkaline method.
On one hand, the invention provides an alkali-process decomposing and dissolving device for monazite mineral powder, which adopts the following technical scheme:
the utility model provides a solitary mineral powder alkaline process decomposes dissolving device, includes stirring mixing device, thick liquids grinder, stirring reaction unit and cooling filter equipment, stirring mixing device is through thick liquids pumping device connection thick liquids grinder, thick liquids grinder passes through thin thick liquids pumping device and connects stirring reaction unit, stirring reaction unit end-to-end connection cooling filter equipment, stirring mixing device's feed end is connected with mineral powder conveyor and alkali lye conveyor, stirring mixing device, thick liquids grinder and stirring reaction unit are provided with heating heat preservation device in the outside.
Through adopting above-mentioned technical scheme, utilize stirring mixing arrangement to fully mix monazite concentrate powder and alkali solution and form the thick liquid, make things convenient for follow-up further operation and reaction, thick liquid grinder carries out further grinding with monazite concentrate powder in the alkali solution, make the reaction of further fusion of monazite concentrate powder and alkali solution, the grinding process can promote the reaction of monazite concentrate powder and alkali solution simultaneously, improve reaction efficiency, stirring reaction unit carries out temporary storage and reaction with the thin thick liquid that the alkali solution formed with the monazite concentrate powder after grinding, make the sufficient reaction of monazite concentrate powder with the alkali solution, finally cooling filter equipment carries out crystallization with the solution after the sufficient reaction of monazite concentrate powder and alkali solution and separates out the filtration, obtain required ore product, thick slurry pumping device and thin slurry pumping device control thick liquid solution flow to next reaction device from a reaction unit, mineral powder conveyor and alkali solution conveyor are poured into simultaneously, the problem that is difficult to fuse when reducing the separation and filling, heating heat preservation device is the best temperature that utilizes high temperature to build the reaction, improvement reaction efficiency.
Preferably, the stirring and mixing device comprises a first shell and a spiral stirring rod, wherein the spiral stirring rod is rotatably arranged inside the first shell, a feed hopper is arranged at the head end of the first shell, and a first discharge valve is arranged at the tail end of the first shell.
Through adopting above-mentioned technical scheme, the spiral puddler is with powdered ore and alkali lye continuous stirring and in the inside intensive mixing of first casing, and first bleeder valve is used for discharging to next process after controlling the thick liquid intensive mixing of powdered ore and alkali lye mixture.
Preferably, the slurry grinding device comprises a second shell and a grinding tower, wherein the grinding tower is vertically arranged in the second shell, the grinding tower comprises a grinding disc, a drop pipe and a drop bucket, a plurality of grinding discs are stacked into a plurality of layers and sleeved on the drop pipe, a plurality of through holes are formed in the side face of the drop pipe and communicated with gaps between the grinding discs, one part of the grinding discs are fixed on the drop pipe and rotate along with the drop pipe, the other part of the grinding discs are arranged on a fixed supporting rod in a sliding mode, and the two parts of the grinding discs are arranged at intervals.
Through adopting above-mentioned technical scheme, grinding tower grinds the preliminary mixed thick liquid of powdered ore and alkali lye and further fully fuses the reaction, and the grinding tower top-down multilayer whereabouts grinds the preliminary mixed thick liquid of powdered ore and alkali lye, grinds more thoroughly, improves grinding efficiency simultaneously.
Preferably, the stirring reaction device comprises a third shell and a stirring comb, the stirring comb is rotatably arranged in the third shell, a first observation port is formed in the side wall of the third shell, and a second discharge valve is arranged at the tail end of the third shell.
Through adopting above-mentioned technical scheme, stirring comb continuously stirs the fine thick liquids after the grinding of mineral powder and alkali lye, carries out abundant fusion with mineral powder and alkali lye, and the reaction condition can be observed through first viewing aperture in the period and judge whether carry out the cooling of next step.
Preferably, the cooling and filtering device comprises a fourth shell and a filter plate, wherein the filter plate is fixedly arranged inside the fourth shell and divides the fourth shell into two parts, a liquid cooling pipeline is further arranged in the fourth shell, and a second observation port is formed in the side wall of the fourth shell.
Through adopting above-mentioned technical scheme, the filter filters the crystal that the cooling was separated out, separates with liquid, and the liquid cooling pipeline cools down the thick liquids after mineral powder and alkali lye reaction, and the second viewing aperture is used for observing and separates out and filter the condition.
Preferably, the coarse slurry pumping device comprises a coarse slurry pipeline and a first grouting pump, the first grouting pump is connected with the stirring and mixing device and the slurry grinding device respectively through the coarse slurry pipeline and is close to a feeding port of the slurry grinding device, a first dredging port is formed in the position, close to the stirring and mixing device, of the coarse slurry pipeline, the fine slurry pumping device comprises a fine slurry pipeline and a second grouting pump, the second grouting pump is connected with the slurry grinding device and the stirring and reacting device respectively through the fine slurry pipeline and is close to a discharging port of the slurry grinding device, and a second dredging port is formed in the position, close to the second grouting pump, of the fine slurry pipeline.
Through adopting above-mentioned technical scheme, first grout pump is close to slurry grinder setting, prevents that the thick liquid that remains in the thick liquid pipeline from sinking to block up, and first desilting mouth is used for clearing up remaining thick liquid, and the second grout pump is close to slurry grinder setting, and the convenience is in time discharged the liquid that slurry grinder flows out for thin thick liquid can not remain too long in slurry grinder, and the second desilting mouth is used for clearing up remaining thin thick liquid.
Preferably, the heating heat preservation device comprises an electric heating pipeline, a heat insulation shell and a heat preservation wrapping layer, wherein the electric heating pipeline is arranged inside the stirring and mixing device, the slurry grinding device and the stirring and reacting device and on the surface of a shell, the heat insulation shell wraps the outer surfaces of the stirring and mixing device, the slurry grinding device and the stirring and reacting device, the heat preservation wrapping layer wraps the outer sides of the coarse slurry pumping device and the fine slurry pumping device, and temperature monitors are arranged inside the stirring and mixing device, the slurry grinding device and the stirring and reacting device.
Through adopting above-mentioned technical scheme, electric heat pipeline is used for providing the heating source, and heat-proof housing is used for thermal-insulated personnel contact scald that prevents, and the heat preservation coating is used for reducing the thick liquids transmission in-process heat loss, and temperature monitor is used for monitoring control temperature, keeps in reasonable temperature interval.
Preferably, the mineral powder conveying device comprises a trough and an auger, the trough is funnel-shaped, one end of the auger is arranged at the bottom of the trough, the other end of the auger is communicated with the feeding end of the stirring and mixing device, a scraping plate is arranged in the trough, the bottom end of the scraping plate is arranged at the center of the trough in a rotating mode through a rotating shaft, and the top end of the scraping plate is arranged at the upper edge of the trough in a moving mode through a scraping trolley.
Through adopting above-mentioned technical scheme, the auger evenly carries the mineral powder from the silo in to stirring mixing arrangement, and the scraper is used for scraping the mineral powder along the silo lateral wall, reduces mineral powder and remains.
Preferably, the auger is connected with an alkali liquor spray head of an alkali liquor conveying device on a connecting pipeline of the stirring and mixing device, the alkali liquor conveying device further comprises an alkali liquor storage box, an alkali liquor conveying pump and an alkali liquor conveying pipe, the alkali liquor conveying pump is connected with the alkali liquor storage box through one end of the alkali liquor conveying pipe, and the other end of the alkali liquor conveying pump is connected with the alkali liquor spray head.
Through adopting above-mentioned technical scheme, alkali lye shower nozzle just pairs auger and stirring mixing arrangement connecting tube way, reduce the siltation of mineral powder in the pipeline on the pipeline wall, can in advance contact the convenience further fusion with the mineral powder simultaneously.
On the other hand, the alkaline process decomposing and dissolving process for monazite mineral powder provided by the invention adopts the following technical scheme:
an alkaline decomposition and dissolution process for monazite mineral powder comprises the following process steps:
step one: mixing and stirring monazite concentrate powder and alkali liquor to form slurry with the monazite concentrate powder and the alkali liquor, and continuously stirring and heating in the process;
step two: grinding slurry formed by monazite concentrate powder and alkali liquor, grinding large-scale and insoluble monazite concentrate powder, and fully mixing with the alkali liquor;
step three: stirring and reacting the ground monazite concentrate powder with alkali liquor slurry, and continuously stirring and heating in the process to fully react the monazite concentrate powder with the alkali liquor;
step four: cooling the monazite concentrate powder after the reaction is completed with alkali liquor slurry, separating out crystals and filtering;
step five: and (3) drying and collecting the filtered monazite concentrate powder reaction crystals, and collecting, processing and recycling the filtered alkali liquor after reaction.
Through adopting above-mentioned technical scheme, through preliminary mixing reaction, grind mixing reaction to fine mixing reaction, adopt tertiary mixing reaction, improve reaction efficiency and improve the reaction rate simultaneously.
In summary, the invention has the following beneficial technical effects:
1. the slurry grinding device is used for further grinding the monazite concentrate powder in the alkali solution, so that the monazite concentrate powder and the alkali solution are further fused, the reaction of the monazite concentrate powder and the alkali solution can be promoted in the grinding process, the reaction efficiency is improved, the fine slurry formed by the ground monazite concentrate powder and the alkali solution is temporarily stored and reacted by the stirring reaction device, the monazite concentrate powder and the alkali solution are fully reacted, the solution after the full reaction of the monazite concentrate powder and the alkali solution is crystallized and separated out by the cooling and filtering device, the required mineral is obtained, the coarse slurry pumping device and the fine slurry pumping device control the slurry solution to flow from one reaction device to the next reaction device, the mineral powder conveying device and the alkali solution conveying device are used for simultaneously filling the mineral powder and the alkali solution, the problem that the mineral powder and the alkali solution are difficult to fuse in separate filling is reduced, the heating and heat preservation device is the optimal temperature for utilizing high-temperature build reaction, and the reaction efficiency is improved.
2. The spiral stirring rod continuously stirs mineral powder and alkali liquor and fully mixes in the first shell, the first discharge valve is used for controlling the slurry of mineral powder and alkali liquor to be fully mixed and then discharged to the next process, the grinding tower grinds the slurry of preliminary mixing of mineral powder and alkali liquor and further fully fuses the reaction, the grinding tower grinds the slurry of preliminary mixing of mineral powder and alkali liquor from top to bottom in a multilayer falling manner, grinding is more thorough, grinding efficiency is improved simultaneously, stirring combs continuously stir fine slurry of ground mineral powder and alkali liquor, mineral powder and alkali liquor are fully fused, reaction conditions can be observed through a first observation port during the process, whether next cooling is carried out or not is judged, the filter plate filters crystals separated by cooling, the liquid cooling pipeline cools the slurry of mineral powder and alkali liquor after reaction, and a second observation port is used for observing separation and filtration conditions.
3. The first grouting pump is close to the setting of thick liquid grinder, prevent that the thick liquid that remains in thick liquid pipeline subsides and sinks to block up, first desilting mouth is used for clearing up remaining thick liquid, the second grouting pump is close to the setting of thick liquid grinder, the convenience is in time discharged the liquid that flows out to thick liquid grinder, make thin thick liquid can not remain too long in thick liquid grinder, the second desilting mouth is used for clearing up remaining thin thick liquid, electric heating pipeline is used for providing the heating source, the insulating housing is used for thermal-insulated personnel contact scald that prevents, the heat preservation wrapping layer is used for reducing thick liquid transmission in-process heat loss, temperature monitor is used for monitoring control temperature, keep in reasonable temperature interval, the auger evenly carries the stirring mixing arrangement with the powdered ore from the silo in, the scraper is used for scraping the powdered ore down along the silo lateral wall, reduce the powdered ore and remain, the positive auger of lye shower nozzle is with stirring mixing arrangement connecting tube, reduce the siltation in the pipeline on the pipeline wall, simultaneously can be in advance with the powdered ore contact convenience further fuses.
4. Through preliminary mixing reaction and grinding mixing reaction to fine mixing reaction, three-stage mixing reaction is adopted, so that the reaction efficiency is improved and the reaction rate is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
fig. 2 is a schematic illustration in full section at the center plane of the present invention.
Reference numerals illustrate:
1. mineral powder conveying device, 11, trough, 111, scraping plate, 112, scraping trolley, 113, rotating shaft, 12, auger, 2, alkali conveying device, 21, alkali storage box, 22, alkali conveying pump, 23, alkali conveying pipe, 24, alkali spray head, 3, stirring and mixing device, 31, first shell, 311, feed hopper, 32, spiral stirring rod, 33, first discharge valve, 4, coarse slurry pumping device, 41, coarse slurry pipeline, 411, first desilting port, 42, first grouting pump, 5, slurry grinding device, 51, second shell, 52, grinding tower, 520, grinding disc, 521, drop tube, 522, drop bucket, 523, fixed support rod, 6, fine slurry pumping device, 61, fine slurry pipeline, 611, second desilting port, 62, second grouting pump, 7, stirring reaction device, 71, third shell, 72, stirring comb, 73, first observation port, 74, second discharge valve, 8, heating and heat preservation device, 81, electric heating pipeline, 82, heat insulation shell, 83, temperature monitor, 84, heat preservation wrapping layer, 9, cooling and filtering device, 91, fourth shell, 92, filter plate, 93, liquid cooling pipeline, 94, second observation port.
Detailed Description
The invention is described in further detail below with reference to fig. 1 and 2.
Example 1:
the embodiment of the invention discloses an alkali-process dissolution device for monazite mineral powder, which comprises a stirring and mixing device 3, a slurry grinding device 5, a stirring and reaction device 7 and a cooling and filtering device 9, wherein the stirring and mixing device 3 is connected with the slurry grinding device 5 through a coarse slurry pumping device 4, the slurry grinding device 5 is connected with the stirring and reaction device 7 through a fine slurry pumping device 6, the tail end of the stirring and reaction device 7 is connected with the cooling and filtering device 9, the feeding end of the stirring and mixing device 3 is connected with a mineral powder conveying device 1 and an alkali liquor conveying device 2, and the inner side and the outer side of the stirring and mixing device 3, the inner side and the outer side of the slurry grinding device 5 and the stirring and reaction device 7 are provided with a heating and heat preservation device 8.
The embodiment of example 1 is:
the method comprises the steps of conveying the pre-prepared monazite mineral powder into a stirring and mixing device 3 through a mineral powder conveying device 1, conveying the pre-prepared alkali liquor into the stirring and mixing device 3 through an alkali liquor conveying device 2, stirring and mixing the alkali liquor through the stirring and mixing device 3 to form coarse slurry, extracting the coarse slurry through a coarse slurry extracting device 4, pouring the coarse slurry into a slurry grinding device 5, grinding and exuding the coarse slurry through the slurry grinding device 5 to form fine slurry, extracting the fine slurry through a fine slurry extracting device 6, pouring the fine slurry into a stirring and reacting device 7, fully reacting the fine slurry in the stirring and reacting device 7, and finally pouring the fine slurry into a cooling and filtering device 9 to perform cooling precipitation.
Example 2:
the addition of the following components is based on the embodiment 1:
referring to fig. 1 and 2, the stirring and mixing device 3 includes a first housing 31 and a screw stirring rod 32, the screw stirring rod 32 is rotatably disposed inside the first housing 31, a feed hopper 311 is disposed at a head end of the first housing 31, and a first discharge valve 33 is disposed at a tail end of the first housing 31.
Referring to fig. 1 and 2, the slurry grinding device 5 includes a second housing 51 and a grinding tower 52, the grinding tower 52 is vertically disposed in the second housing 51, the grinding tower 52 includes a grinding disc 520, a drop pipe 521 and a drop hopper 522, a plurality of grinding discs 520 are stacked in multiple layers and are sleeved on the drop pipe 521, a plurality of through holes are formed on a side surface of the drop pipe 521 and are communicated with gaps between the grinding discs 520, a part of the grinding discs 520 are fixed on the drop pipe 521 and rotate along with the drop pipe 521, another part of the grinding discs 520 are slidably disposed on a fixed support rod 523, and two parts of the grinding discs 520 are disposed at intervals.
Referring to fig. 1 and 2, the stirring reaction device 7 includes a third housing 71 and a stirring comb 72, the stirring comb 72 is rotatably disposed in the third housing 71, a first observation port 73 is formed on a side wall of the third housing 71, and a second discharge valve 74 is disposed at an end of the third housing 71.
Referring to fig. 1 and 2, the cooling filter device 9 includes a fourth housing 91 and a filter plate 92, where the filter plate 92 is fixedly disposed inside the fourth housing 91 and divides the fourth housing 91 into two parts, a liquid cooling pipeline 93 is further disposed in the fourth housing 91, and a second observation port 94 is opened on a side wall of the fourth housing 91.
The embodiment of example 2 is:
the spiral stirring rod 32 is used for continuously stirring mineral powder and alkali liquor to fully mix the mineral powder and the alkali liquor into coarse slurry, and the first discharge valve 33 is opened to discharge the coarse slurry after the mixing is completed.
The coarse slurry falls down along the falling pipe 521 and flows into the grinding tower 52, and the grinding tray 520 of the grinding tower 52 grinds the coarse slurry and seeps out the ground fine slurry from the side.
The stirring comb 72 continuously stirs the fine slurry to enable the mineral powder and the alkali liquor to be fully fused for reaction until the reaction is completed, and the second discharge valve 74 is opened to discharge the reacted slurry after the reaction is completed.
The liquid cooling pipe 93 cools the slurry after the reaction, and mineral is separated out from the slurry and filtered by the filter plate 92 to perform solid-liquid separation.
Example 3
The addition of the following components is based on the embodiment 1:
referring to fig. 1 and 2, the coarse slurry pumping device 4 includes a coarse slurry pipe 41 and a first grouting pump 42, the first grouting pump 42 is connected with the stirring and mixing device 3 and the slurry grinding device 5 through the coarse slurry pipe 41 and is disposed near a feed port of the slurry grinding device 5, a first dredging port 411 is formed in the coarse slurry pipe 41 near the stirring and mixing device 3, the fine slurry pumping device 6 includes a fine slurry pipe 61 and a second grouting pump 62, the second grouting pump 62 is connected with the slurry grinding device 5 and the stirring and reacting device 7 through the fine slurry pipe 61 and is disposed near a discharge port of the slurry grinding device 5, and a second dredging port 611 is formed in the fine slurry pipe 61 and near the second grouting pump 62.
Referring to fig. 1 and 2, the heating and heat preserving device 8 comprises an electric heating pipeline 81, a heat insulating shell 82 and a heat preserving wrapping layer 84, wherein the electric heating pipeline 81 is arranged on the surfaces of the stirring and mixing device 3, the slurry grinding device 5 and the stirring and reacting device 7, the heat insulating shell 82 wraps the outer surfaces of the stirring and mixing device 3, the slurry grinding device 5 and the stirring and reacting device 7, the heat preserving wrapping layer 84 wraps the outer sides of the coarse slurry pumping device 4 and the fine slurry pumping device 6, and temperature monitors 83 are arranged inside the stirring and mixing device 3, the slurry grinding device 5 and the stirring and reacting device 7.
Referring to fig. 1 and 2, the mineral powder conveying device 1 comprises a trough 11 and an auger 12, the trough 11 is funnel-shaped, one end of the auger 12 is arranged at the bottom of the trough 11, the other end of the auger is communicated with the feeding end of the stirring and mixing device 3, a scraping plate 111 is arranged in the trough 11, the bottom end of the scraping plate 111 is rotatably arranged at the center of the trough 11 through a rotating shaft 113, and the top end of the scraping plate 111 is movably arranged at the upper edge of the trough 11 through a scraping trolley 112.
Referring to fig. 1 and 2, an alkali liquor spray head 24 of the alkali liquor conveying device 2 is connected to a pipeline connecting the auger 12 and the stirring and mixing device 3, the alkali liquor conveying device 2 further comprises an alkali liquor storage box 21, an alkali liquor conveying pump 22 and an alkali liquor conveying pipe 23, and the alkali liquor conveying pump 22 is connected with the alkali liquor storage box 21 through one end of the alkali liquor conveying pipe 23, and the other end of the alkali liquor conveying pump is connected with the alkali liquor spray head 24.
The embodiment of example 3 is:
when the device is stopped, the residual slurry in the coarse slurry pipeline 41 and the fine slurry pipeline 61 flows out and is cleaned through the first dredging opening 411 and the second dredging opening 611 respectively, so that the slurry is prevented from corroding equipment in the equipment for a long time.
Example 4:
the embodiment of the invention discloses an alkaline decomposition and dissolution process for monazite mineral powder, which comprises the following process steps:
step one: mixing and stirring monazite concentrate powder and alkali liquor to form slurry with the monazite concentrate powder and the alkali liquor, and continuously stirring and heating in the process;
step two: grinding slurry formed by monazite concentrate powder and alkali liquor, grinding large-scale and insoluble monazite concentrate powder, and fully mixing with the alkali liquor;
step three: stirring and reacting the ground monazite concentrate powder with alkali liquor slurry, and continuously stirring and heating in the process to fully react the monazite concentrate powder with the alkali liquor;
step four: cooling the monazite concentrate powder after the reaction is completed with alkali liquor slurry, separating out crystals and filtering;
step five: and (3) drying and collecting the filtered monazite concentrate powder reaction crystals, and collecting, processing and recycling the filtered alkali liquor after reaction.
The above embodiments are not intended to limit the scope of the present invention, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (10)
1. The utility model provides a monazite mineral powder alkaline process decomposes dissolving out device which characterized in that: the device comprises a stirring and mixing device (3), a slurry grinding device (5), a stirring and reacting device (7) and a cooling and filtering device (9), wherein the stirring and mixing device (3) is connected with the slurry grinding device (5) through a coarse slurry pumping device (4), the slurry grinding device (5) is connected with the stirring and reacting device (7) through a fine slurry pumping device (6), and the tail end of the stirring and reacting device (7) is connected with the cooling and filtering device (9);
the feeding end of the stirring and mixing device (3) is connected with a mineral powder conveying device (1) and an alkali liquor conveying device (2);
the inner side and the outer side of the stirring and mixing device (3), the slurry grinding device (5) and the stirring and reacting device (7) are provided with heating and heat preserving devices (8).
2. The monazite mineral powder alkaline process decomposition and dissolution device according to claim 1, wherein: stirring mixing arrangement (3) are including first casing (31) and spiral puddler (32), spiral puddler (32) rotation sets up inside first casing (31), first casing (31) head end is provided with feeder hopper (311), first casing (31) end is provided with first bleeder valve (33).
3. The monazite mineral powder alkaline process decomposition and dissolution device according to claim 1, wherein: the slurry grinding device (5) comprises a second shell (51) and a grinding tower (52), wherein the grinding tower (52) is vertically arranged in the second shell (51), the grinding tower (52) comprises a grinding disc (520), a falling pipe (521) and a falling hopper (522), a plurality of grinding discs (520) are stacked into a plurality of layers and sleeved on the falling pipe (521), a plurality of through holes are formed in the side face of the falling pipe (521) and are communicated with gaps among the grinding discs (520), one part of the grinding discs (520) are fixed on the falling pipe (521) and rotate along with the falling pipe (521), the other part of the grinding discs (520) are slidably arranged on a fixed supporting rod (523), and the two parts of the grinding discs (520) are mutually arranged at intervals.
4. The monazite mineral powder alkaline process decomposition and dissolution device according to claim 1, wherein: the stirring reaction device (7) comprises a third shell (71) and a stirring comb (72), the stirring comb (72) is rotatably arranged in the third shell (71), a first observation port (73) is formed in the side wall of the third shell (71), and a second discharge valve (74) is arranged at the tail end of the third shell (71).
5. The monazite mineral powder alkaline process decomposition and dissolution device according to claim 1, wherein: the cooling and filtering device (9) comprises a fourth shell (91) and a filter plate (92), wherein the filter plate (92) is fixedly arranged inside the fourth shell (91) and divides the fourth shell (91) into two parts, a liquid cooling pipeline (93) is further arranged in the fourth shell (91), and a second observation port (94) is formed in the side wall of the fourth shell (91).
6. The monazite mineral powder alkaline process decomposition and dissolution device according to claim 1, wherein: the thick liquid pumping device (4) comprises a thick liquid pipeline (41) and a first grouting pump (42), the first grouting pump (42) is connected with the stirring and mixing device (3) and the slurry grinding device (5) respectively through the thick liquid pipeline (41) and is close to a feeding port of the slurry grinding device (5), the thick liquid pipeline (41) is close to the stirring and mixing device (3) and is provided with a first desilting port (411), the thin slurry pumping device (6) comprises a thin slurry pipeline (61) and a second grouting pump (62), and the second grouting pump (62) is connected with the slurry grinding device (5) and the stirring and reacting device (7) respectively through the thin slurry pipeline (61) and is close to a discharging port of the slurry grinding device (5), and the thin slurry pipeline (61) is provided with a second desilting port (611) close to the second grouting pump (62).
7. The monazite mineral powder alkaline process decomposition and dissolution device according to claim 1, wherein: heating heat preservation device (8) include electric heating pipeline (81), insulating housing (82) and heat preservation wrapping layer (84), electric heating pipeline (81) set up inside stirring mixing device (3), thick liquids grinder (5) and stirring reaction unit (7) and casing surface, insulating housing (82) parcel is at stirring mixing device (3), thick liquids grinder (5) and stirring reaction unit (7) surface, heat preservation wrapping layer (84) parcel is in thick liquids pumping device (4) and thin thick liquids pumping device (6) outside, stirring mixing device (3), thick liquids grinder (5) and stirring reaction unit (7) are inside all to be provided with temperature monitor (83).
8. The monazite mineral powder alkaline process decomposition and dissolution device according to claim 1, wherein: mineral powder conveyor (1) include silo (11) and auger (12), silo (11) are the funnel shape, auger (12) one end sets up in silo (11) bottom, and the other end intercommunication stirring mixing arrangement (3) feed end, be provided with in silo (11) and scrape flitch (111), scrape flitch (111) bottom through pivot (113) rotation setting in silo (11) center department, scrape flitch (111) top through scraping material dolly (112) removal setting in silo (11) upper edge department.
9. The monazite mineral powder alkaline decomposition and dissolution device according to claim 8, wherein: the device is characterized in that an alkali liquor spray head (24) of the alkali liquor conveying device (2) is connected to a connecting pipeline of the auger (12) and the stirring and mixing device (3), the alkali liquor conveying device (2) further comprises an alkali liquor storage box (21), an alkali liquor conveying pump (22) and an alkali liquor conveying pipe (23), one end of the alkali liquor conveying pump (22) is connected with the alkali liquor storage box (21) through the alkali liquor conveying pipe (23), and the other end of the alkali liquor conveying pump is connected with the alkali liquor spray head (24).
10. An alkaline decomposition and dissolution process for monazite mineral powder is characterized in that: the method comprises the following process steps:
step one: mixing and stirring monazite concentrate powder and alkali liquor to form slurry with the monazite concentrate powder and the alkali liquor, and continuously stirring and heating in the process;
step two: grinding slurry formed by monazite concentrate powder and alkali liquor, grinding large-scale and insoluble monazite concentrate powder, and fully mixing with the alkali liquor;
step three: stirring and reacting the ground monazite concentrate powder with alkali liquor slurry, and continuously stirring and heating in the process to fully react the monazite concentrate powder with the alkali liquor;
step four: cooling the monazite concentrate powder after the reaction is completed with alkali liquor slurry, separating out crystals and filtering;
step five: and (3) drying and collecting the filtered monazite concentrate powder reaction crystals, and collecting, processing and recycling the filtered alkali liquor after reaction.
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| 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 |
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