CN107673389A - The method of strontium slag production strontium chloride and the strontium chloride prepared with this method - Google Patents
The method of strontium slag production strontium chloride and the strontium chloride prepared with this method Download PDFInfo
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- CN107673389A CN107673389A CN201711045303.5A CN201711045303A CN107673389A CN 107673389 A CN107673389 A CN 107673389A CN 201711045303 A CN201711045303 A CN 201711045303A CN 107673389 A CN107673389 A CN 107673389A
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- 229910052712 strontium Inorganic materials 0.000 title claims abstract description 43
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 title claims abstract description 43
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 34
- 229910001631 strontium chloride Inorganic materials 0.000 title claims abstract description 34
- 239000002893 slag Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 112
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000002425 crystallisation Methods 0.000 claims abstract description 27
- 230000008025 crystallization Effects 0.000 claims abstract description 23
- 239000013078 crystal Substances 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 239000000706 filtrate Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 230000009467 reduction Effects 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Inorganic materials [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000003245 coal Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 7
- 239000000460 chlorine Substances 0.000 claims description 7
- 229910052801 chlorine Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 238000002386 leaching Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052788 barium Inorganic materials 0.000 claims description 6
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 5
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 claims description 4
- 229910001866 strontium hydroxide Inorganic materials 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000002639 sodium chloride Nutrition 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 2
- 238000012824 chemical production Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910000018 strontium carbonate Inorganic materials 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 159000000008 strontium salts Chemical class 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- ZEGFMFQPWDMMEP-UHFFFAOYSA-N strontium;sulfide Chemical compound [S-2].[Sr+2] ZEGFMFQPWDMMEP-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910003641 H2SiO3 Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910003383 SrSiO3 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052923 celestite Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052917 strontium silicate Inorganic materials 0.000 description 1
- QSQXISIULMTHLV-UHFFFAOYSA-N strontium;dioxido(oxo)silane Chemical compound [Sr+2].[O-][Si]([O-])=O QSQXISIULMTHLV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/24—Chlorides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to chemical production field, the strontium chloride for disclosing the method for strontium slag production strontium chloride and being prepared with this method, the invention provides a kind of method of strontium slag production strontium chloride and the strontium chloride prepared with this method.A kind of method of strontium slag production strontium chloride, comprises the following steps：Weigh 100 200kg celestines, 50 250kg feed coals carry out reduction roasting in rotary furnace under the high temperature conditions, strontium slag is through ball mill grinding into slurry；Hydrochloric acid is added in the slurry until the solid particle in slurry is not redissolved；Filter off and remove residue, filtrate is refined；Crystallization, crystal obtain six water strontium chlorides through centrifuge filtration washing.Above measure is taken, and improves the quality of strontium chloride, improves production efficiency, adds yield.
Description
Technical field
It is more particularly to a kind of to produce the method for strontium chloride using strontium slag and use this method the invention belongs to chemical production field
The strontium chloride of preparation.
Background technology
Strontium chloride can be used for the fluxing agent of electrolytic metal sodium, produces fireworks and the raw material of other strontium salts, is additionally operable to chemical examination
Agent and organic catalyst compound etc., strontium chloride are also the production indispensable raw material of plasma television screen.Feed coal is by certain
Ratio is blended in kiln roasting reduction reaction and generates rough strontium sulfide, also containing 30% or so acid in remaining strontium slag after leaching
Dissolubility strontium is (with strontium carbonate SrCO3Meter), currently as brickmaking, cement raw material uses, and causes the waste of rare strontium resource, unrecovered
The acid-soluble strontium in this part.In strontium chloride production, crystallization process is mainly to be carried out in the method for intermittent cooling.In the prior art,
The granularity of crystal is difficult control in the process so that the quality of product is unstable, and product easily lumps.
The content of the invention
The defects of for prior art, prepared the invention provides a kind of method of strontium slag production strontium chloride and with this method
Strontium chloride.
A kind of method of strontium slag production strontium chloride, comprises the following steps：
S100：Weigh 100-200kg celestines, 50-250kg feed coals are reduced in rotary furnace under the high temperature conditions
Roasting, thick barium, the strontium material for being calcined to obtain are added into the closed leaching can equipped with water, and temperature-pressure, which stirs, causes thick barium, strontium material
Reacted with water, the solidliquid mixture in leaching can is sent into centrifuge, is separated through centrifuge, useful solution is collected, strontium slag
It is admitted to ball mill；Wherein, before celestine and feed coal put rotary furnace roasting into, celestine and feed coal are put into crushing
Machine crushes 10-15min；
S200：Strontium slag is through ball mill grinding into slurry；The ball mill includes barrel 7, the outer barrel 6 being obliquely installed, barrel 7
It is fixed in outer barrel 6, barrel 7 is obliquely installed, and it is 27-53 degree with horizontal plane angle, offers on barrel 7 and is communicated with outer barrel 6
Mesh 15, outer barrel 6 is by upper flat segments 11, lower flat segments 5 and the tilting section between upper flat segments 11 and lower flat segments 5
8, the outside of upper flat segments 11 is provided with the first guide rail 13, and the first support wheel 9 is stuck in the first guide rail 13, outside lower flat segments 5
Side is provided with the second guide rail 16, and the second support wheel 4 is stuck in the second guide rail 16, and conveying spiral shell is provided with the madial wall of outer barrel 6
Rotation 14, the bottom of barrel 7 is connected with rotating shaft 3, and rotating shaft 3 is connected by decelerator 2 with motor 1；
S300：Hydrochloric acid is added in the slurry until the solid particle in slurry is not redissolved；Wherein, the hydrochloric acid is to pass through
What electrolysis was prepared, its preparation process is as follows：1) saturated aqueous common salt is electrolysed, in addition to sodium hydroxide is obtained, in the moon
Pole produces hydrogen, and chlorine is produced in anode；2) hydrogen and chlorine are passed to the burner ignition of quartz system in the reactor, it is raw
Into hydrogen chloride gas；3) it is only absorbed by the water after hydrogen chloride gas is cooled down as hydrochloric acid；
S400：Filter off and remove residue, filtrate is refined；
S500：Crystallisation by cooling, 5 DEG C/h~10 DEG C of crystallization cooling rate/h, is cooled using cooling control system by ladder
Control crystallization cooling rate；
S600：Crystal obtains six water strontium chlorides through centrifuge filtration washing.
Optionally, the cooling control system includes hot water storgae 18, cold rinse bank 20, mixed tank 26, crystallizing tank and control
Device 17, the first thermometer 19 is placed with hot water storgae 18, second temperature meter 21 is placed with cold rinse bank 20, placed in mixed tank 26
3rd thermometer 28, hot water storgae 18 are connected by heat-exchanger pump 22 with mixed tank 26, the heat between heat-exchanger pump 22 and mixed tank 26
First flowmeter 24 is installed, cold rinse bank 20 is connected by water supply pump 23 with mixed tank 26, in water supply pump 23 and mixed water on water pipe
Second flowmeter 25 is installed on the cold water pipe between groove 26, tank 26 is mixed and crystallizing tank is connected by water injecting pump 29.Crystallizing tank is adopted
With jacket structured, including inner canister 30 and chuck 31, outside inner canister 30, chuck 31 is connected the Bao Li of chuck 31 with water injecting pump 29,
Drainpipe and water discharging valve 37 are additionally provided with chuck 31, the 4th thermometer 34 is provided with chuck 31, is provided with inner canister 30
Agitator 33, the 5th thermometer 32 and pressure gauge 35, agitator 33 are connected through axle sealing structure 36 with motor 41, are led to
Motor 41 of overdriving driving agitator 33 rotates, and charging aperture 38 is further opened with the top of inner canister 30, charging aperture 38 passes through charging
Pipeline connects feed pump 39, is provided with the 3rd flowmeter 40 on feed pipe, the first thermometer 19, second temperature meter 21, the
Three thermometers 28, the 4th thermometer 34, the 5th thermometer 32, first flowmeter 24, second flowmeter 25, the 3rd flowmeter 40,
Pressure gauge 35, heat-exchanger pump 22, water supply pump 23, water injecting pump 29, feed pump 39 and motor 41 are connected with controller 17.Institute
Axle sealing structure 36 is stated, axle sealing structure includes wedge-type seal circle 36.6, the first expansion controlling ring-shaped insert 36.2 and at the top of crystallizing tank
Support 36.1, wedge-type seal circle 36.6 is placed on agitating shaft 36.5 and clamped by support 36.6, in wedge-type seal circle 36.6
External tooth 36.7 is provided with the outside of wedge portion, internal tooth 36.8, external tooth 36.7 and internal tooth 36.8 are set in the inner side of the first expansion controlling ring-shaped insert 36.2
It can be intermeshed.The step S400 includes：Hydrogen peroxide and strontium hydroxide are added, pH to 8~10 is adjusted, is heated to 60~70
DEG C, stir, filtering, remove residue.
The step S500 includes：
S501：Hot water storgae temperature is kept to keep cold rinse bank temperature for crystallization initial temperature T0 as crystallization finishing temperature T1；
S502：Set rate of temperature fall V and total stage N that cools；
S503：Each temperature-fall period initial time is calculated, wherein n-th of stage initial time tn is calculated by following formula：tn
=(T0-T1)/(N-n+1) V；
S504：Each stage hot and cold water volumetric mixture ratio is calculated, wherein n-th of stage hot and cold water volumetric mixture ratio is：VHeat：VIt is cold
=(N-n)：n；
S505：Mixed cooling water is injected into crystallizing tank chuck；
S506：Judge whether water temperature is equal to water temperature in mixed tank in chuck；Or judge in chuck in water temperature and cold rinse bank
Whether the difference of water temperature is less than given threshold；
S507：When judge in chuck water temperature be equal in mixed tank in water temperature, or chuck water temperature and water temperature in cold rinse bank it
When difference is less than given threshold, turn on agitator to next temperature-fall period；
S508：N adds 1, and as n=N, whole temperature-fall period terminates.Also include：
S700：Dry and dry, drying temperature is 140 DEG C~320 DEG C, and is incubated 2~3h, and anhydrous strontium chloride is made；Its
In, drying process is dried for six water strontium chlorides are put into Vibratingfluidbeddrier.
The beneficial effects of the invention are as follows：The present invention can be used for, using strontium slag production strontium chloride, reclaiming strontium salt saving therein
Resource；Inclined ball mill is used in production, input and output material is convenient, is hardly damaged, and production efficiency is high；Pass through the control to rate of temperature fall
System, the crystal formation and granularity of crystallization are controlled well, control system is tactful using the cooling of hot and cold water mixing ladder, and algorithm is easy,
Control system cost is low, reliable.Above measure is taken, and improves the quality of strontium chloride, improves production efficiency, increase
Yield.
Brief description of the drawings
Fig. 1 is the first pass figure of production method of the present invention；
Fig. 2 is the second flow chart of production method of the present invention；
Fig. 3 is the structural representation of ball mill；
Fig. 4 is the structural representation of helical feed；
Fig. 5 is influence of the rate of temperature fall to crystal size；
Fig. 6 is the structural representation of cooling control system；
Fig. 7 A are the structural representations of sealing；
Fig. 7 B are the sectional drawings of wedge-type seal circle；
Fig. 7 C are I portions enlarged diagrams in Fig. 7 A；
Fig. 8 is ladder cooling figure；
Fig. 9 is step S500 flow chart；
Figure 10 is actual measurement temperature lowering curve figure.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail, make the above and other purpose of the present invention, feature and advantage will become apparent from.Complete
Identical reference instruction identical part in portion's accompanying drawing.Not deliberately accompanying drawing drawn to scale, it is preferred that emphasis is show this hair
Bright purport.
Fig. 1 and Fig. 2 are referred to, the method that strontium slag of the invention produces six water strontium chlorides comprises the following steps.
The invention discloses：S100：Celestine and feed coal carry out reduction roasting in rotary furnace under the high temperature conditions, roasting
Burn obtained thick barium, strontium material to be added into the closed leaching can equipped with water, temperature-pressure, which stirs, causes thick barium, strontium material and water to occur
React, the solidliquid mixture in leaching can is sent into centrifuge, is separated through centrifuge, useful solution is collected, and strontium slag is admitted to ball
Grinding machine.Preferably, 100-200kg celestines are weighed, 50-250kg feed coals are put rotary furnace into and are calcined.Preferably, in day
Before green stone and feed coal put rotary furnace roasting into, put celestine and feed coal into pulverizer and crush 10-15min.
Material is in the confined reaction tank of temperature-pressure, and agitated, substance reaction is abundant, high conversion rate.Waste residue is through centrifugation
After machine dries, water content is low, and the useful solution overwhelming majority is collected, and reduces the waste of material, and waste residue is due to water content
It is few, it also avoid strontium hydroxide and strontium sulfate be carried away with waste residue, it is environmentally safe.
The invention discloses：S200：Strontium slag is through ball mill grinding into slurry.
Strontium slag need to pass through ball mill grinding into powder, fully to be reacted with the hydrochloric acid subsequently added.Ball mill is strontium slag
The key equipment of crushing, currently used ball mill be divided into it is vertical with it is horizontal.Vertical ball mill generally comprises barrel, upper support knot
Structure and lower support structure, wherein, barrel is rotatably mounted on upper support structure and by the rotation on upper support structure
Turning drive mechanism drives the central axis around barrel itself to rotate, vertical ball mill Jie Gou Jian Unit, but vertical ball mill has been ground
Need to pour out barrel powder, tipping mechanism is complicated, fragile barrel inclination flip by tipping mechanism during discharging.
Horizontal ball mill generally comprises horizontal barrel, and the non-rotary outer barrel of a fixation, barrel rotating cylinder in outer barrel, powder are arranged outside barrel
Powder after broken is fallen into outer barrel from barrel to be collected, and outer barrel opening, the powder of collection is fallen from outer barrel, and horizontal ball mill is not required to
Tipping mechanism is wanted, but needs to set the bearing arrangement rotated between horizontal ball mill barrel and outer barrel, passes through this bearing knot
It is configured to barrel to rotate in outer barrel, this bearing arrangement is fragile, and cost is high.
In view of the above-mentioned problems, the present invention is using new strontium slag ball mill as shown in Figure 3,4.Including the barrel being obliquely installed
7th, outer barrel 6, barrel 7 are fixed in outer barrel 6, such as outer barrel 6 can be welded on barrel 7.Barrel 7 is obliquely installed, itself and water
Plane included angle is about 27-53 degree, and the mesh 15 communicated with outer barrel 6 is offered on barrel 7.Outer barrel 6 mainly has two effects, when
Support barrel 7 rotates, second, collecting the powder after grinding and discharge.Outer barrel 6 is by upper flat segments 11, lower flat segments 5 and is located at
Tilting section 8 between upper flat segments 11 and lower flat segments 5, the outside of upper flat segments 11 are provided with the first guide rail 13, the first support
Wheel 9 is stuck in the first guide rail 13, and the outside of lower flat segments 5 is provided with the second guide rail 16, and the second support wheel 4 is stuck in the second guide rail 16
In, the sheet metal 10 that be arranged in parallel that the first guide rail 13 can be protruded from the outside of outer barrel 6 with the second guide rail 16 by twice forms, such as
Can be iron plate, sheet metal 10 is welded in the outside of outer barrel 6.Conveyor screw 14 is provided with the madial wall of outer barrel 6.Further
, the top of barrel 7 is provided with lid 12, and the bottom of barrel 7 is connected with rotating shaft 3, and rotating shaft 3 is connected by decelerator 2 with motor 1.
Strontium slag ball mill in technical solution of the present invention, abrasive material, by being put into together with lid 12 in barrel 7, close lid with strontium slag
12, the motor 1 that switches on power drives rotating shaft 3 to rotate by decelerator 2, and then drives barrel 7 to rotate, and outer barrel 6 is by the first support wheel 9
Supported with the second support wheel 4, outer barrel 6 is fixedly connected with barrel 7, and such outer barrel 6 can be along the first guide rail 13 and the second guide rail 16
Being rotated with together with barrel 7, the strontium slag in barrel 7 is ground crushing, when strontium slag particle footpath is less than the aperture of mesh 15 on barrel 7,
Strontium slag will be fallen into outer barrel 6, and because outer barrel 6 is rotating, the strontium slag in such outer barrel 6 is in the presence of conveyor screw 14, just
By being transported to inside outer barrel 6 outside cylinder.The strontium slag ball mill of the present invention, using being obliquely installed, barrel 7 is fixedly connected with outer barrel 6,
Bearing arrangement need not be set between them, and knot structure letter Unit is durable, can be with by the conveyor screw 14 that is set on the inwall of outer barrel 6
The strontium slag fallen into outer barrel 6 is transferred out in time in process of lapping, it is not necessary to which the tipping mechanism of complexity, ball mill cost are set
It is low, it is hardly damaged, production efficiency is high.
The invention discloses：S300：Hydrochloric acid is added in the slurry until the solid particle in slurry is not redissolved.
Slurry main component is strontium carbonate, strontium silicate, the strontium sulfate not being reduced caused by roasting process and failed on a small quantity
Strontium sulfide of water logging dissolution etc., wherein strontium sulfate are acid-soluble relatively low, and other compositions can be completely dissolved by strong acid, generate chlorination
Strontium, reaction equation are as follows.
SrCO3Ten 2HC1 generate SrCl2Ten CO2↑ ten H2O
SrS+2HCl generates SrCl2+H2S↑
SrSiO3Ten 2HC1 generate SrC12Ten H2SiO3
The 2HCl of SrSO4 ten generate SrCl2Ten H2SO4
Wherein, hydrochloric acid can be prepared using any preparation method of the prior art.Preferably, the hydrochloric acid is to pass through
What electrolysis was prepared, its preparation process is as follows：1) saturated aqueous common salt is electrolysed, in addition to sodium hydroxide is obtained, in the moon
Pole produces hydrogen, and chlorine is produced in anode；2) hydrogen and chlorine are passed to the burner ignition of quartz system in the reactor, it is raw
Into hydrogen chloride gas；3) it is only absorbed by the water after hydrogen chloride gas is cooled down as hydrochloric acid；
The invention discloses：S400：Filter off and remove residue, filtrate is refined.
Also containing a small amount of calcium, magnesium, iron in strontium slag etc., these can by dissolving with hydrochloric acid, it is necessary to further refined to it,
Further desulfurization de-magging decalcification iron removaling.Therefore, the present invention be passed through in filtrate add mass fraction be 30% hydrogen peroxide it is few
Perhaps, pH to 8~10 being adjusted with strontium hydroxide, is heated to 60~70 DEG C, stirred, filtering, remove residue, filtrate is heated to boiling, after
It is continuous that to be concentrated into strontium chloride mass concentration be 650~670g/L.
The invention discloses：S500：Crystallisation by cooling, 5 DEG C/h~10 DEG C of crystallization cooling rate/h.
The motive force of crystallization process is degree of supersaturation, and degree of supersaturation is to control the key of crystalline product quality, permanent saturation degree
What typically crystallization process controlled pursues a goal.The generation of degree of supersaturation in crystallisation by cooling provides mainly by cooling.Institute
Big with cooldown rate, then caused degree of supersaturation is with regard to big, and it is nucleated and growth motive force also increases.But too fast cooldown rate
But crystal nucleation can be caused excessive, or even coalescence, therefore rate of temperature fall will have a significant impact to crystallization process.Experiment finds cooling
Influence of the speed to crystal size is as shown in Figure 5.
As shown in Figure 5, when rate of temperature fall is 2.5 DEG C/h, strontium chloride crystal size reaches maximum, with rate of temperature fall
Increase, crystal size reduce.Crystal size decreases with rate of temperature fall increase, because when rate of temperature fall is accelerated, it is brilliant
The nucleation rate of body is also accelerated, so as to cause crystal grain tiny, poor crystal quality.Less rate of temperature fall is thus used, favorably
In raising crystal yield and purity, but rate of temperature fall can extend manufacture cycle slowly excessively, but for the consideration of production efficiency, selection is most
Good rate of temperature fall is 5 DEG C/h~10 DEG C/h.
Traditional crystallization process controlled level falls behind relatively, and production and quality are unstable, and many factories that produce and process close
Using being manually controlled, human cost is high and control is not accurate.With the development of science and technology, in order to control the temperature in crystallization
Degree, employs the different control methods such as PID control, fuzzy control, Self Adaptive Control in succession.Because crystallization process time lag is larger,
Traditional PID control overshoot is very big with oscillation amplitude, and control effect is simultaneously bad；The control of mould lake is according to expertise, no
The different expert of syncrystallization system can draw entirely different control conclusion, and otherness is larger, and the accumulation needs of experience are longer
Time could complete, be not particularly suited for new production line；Adaptive control algorithm is complicated, it is necessary to gather with the variable of control very
More, control system is with high costs.
Pin to crystallize cooling control system on the other hand, present invention employs strontium chloride as shown in Figure 6.System includes hot water storgae
18th, cold rinse bank 20, mixed tank 26, crystallizing tank and controller 17, the first thermometer 19, cold rinse bank 20 are placed with hot water storgae 18
In be placed with second temperature meter 21, mix and the 3rd thermometer 28 placed in tank 26, hot water storgae 18 passes through heat-exchanger pump 22 and mixed tank
26 are connected, and first flowmeter 24 are provided with the hot-water line between heat-exchanger pump 22 and mixed tank 26, cold rinse bank 20 passes through cold water
Pump 23 is connected with mixed tank 26, and second flowmeter 25 is provided with the cold water pipe between water supply pump 23 and mixed tank 26, mixes water
Groove 26 connects crystallizing tank by water injecting pump 29.Crystallizing tank is using jacket structured, including inner canister 30 and chuck 31, the Bao Li of chuck 31 in
Outside inner canister 30, chuck 31 is connected with water injecting pump 29, is additionally provided with drainpipe and water discharging valve 37 on chuck 31, in chuck 31
The 4th thermometer 34 is provided with, agitator 33, the 5th thermometer 32 and pressure gauge 35 are provided with inner canister 30, agitator 33 is worn
Cross axle sealing structure 36 to be connected with motor 41, drive agitator 33 to rotate by motor 41, at the top of inner canister 30
Charging aperture 38 is further opened with, charging aperture 38 connects feed pump 39 by feed pipe, the 3rd flow is provided with feed pipe
Meter 40, it is the first thermometer 19, second temperature meter 21, the 3rd thermometer 28, the 4th thermometer 34, the 5th thermometer 32, first-class
Gauge 24, second flowmeter 25, the 3rd flowmeter 40, pressure gauge 35, heat-exchanger pump 22, water supply pump 23, water injecting pump 29, feed pump 39
And motor 41 is connected with controller 17.
Traditional crystallizing tank agitating shaft typically uses rubber sealing, but " transfer " phenomenon easily occurs between cushion rubber and agitating shaft,
I.e. cushion rubber rotates with agitating shaft together, and " transfer " can accelerate the abrasion of cushion rubber so that seal failure, cause the leakage of material,
Temperature, the balance of pressure in crystallizing tank are influenceed, crystallization effect is deteriorated.On the other hand, the present invention is devised as shown in Fig. 7 A, 7B, 7C
Axle sealing structure 36.Axle sealing structure includes wedge-type seal circle 36.6, the first expansion controlling ring-shaped insert 36.2 and the branch at the top of crystallizing tank
Frame 36.1, wedge-type seal circle 36.6 is placed on agitating shaft 36.5 and clamped by support 36.6, in the wedge of wedge-type seal circle 36.6
External tooth 36.7 is provided with the outside of portion, internal tooth 36.8 is set in the inner side of the first expansion controlling ring-shaped insert 36.2, external tooth 36.7 can with internal tooth 36.8
With intermeshing, external tooth 36.7 can be provided with internal tooth 36.8 it is multigroup, it is in fig. 7 c, of the invention to be provided with 4 groups of intermeshings
External tooth 36.7 and internal tooth 36.8.Expansion controlling ring-shaped insert 36.2 is secured by bolts on support 36.1.Further, in order to strengthen it is anti-with
Turn effect, multiple expansion controlling ring-shaped inserts can also be set, as shown in Figure 7 A, the second expansion controlling ring-shaped insert 36.3, the second expansion controlling ring-shaped insert can also be set
36.3 are located at the lower section of the first expansion controlling ring-shaped insert 36.2, and it can be fixedly linked by bolt 36.4 and the first expansion controlling ring-shaped insert 36.2.First
Expansion controlling ring-shaped insert 36.2 is made of metal with the second expansion controlling ring-shaped insert 36.3, and it can be a complete circle, can also two semicircular ring docking
Form, wedge-type seal circle 36.6 is made up of rubber or plastics.
During installation, agitating shaft 36.5 is first passed through into wedge-type seal circle 36.6, the first expansion controlling ring-shaped insert 36.2, the second expansion controlling ring-shaped insert 36.3
(if present), the first expansion controlling ring-shaped insert 36.2 is pushed up afterwards, be allowed to gradually entangle firm the wedge portion of wedge-type seal circle 36.6, until outer
Tooth 36.7 and internal tooth 36.8 are at a fully engaged, and such wedge-type seal circle 36.6 has just been fixed on agitating shaft 36.5, passes through spiral shell afterwards
First expansion controlling ring-shaped insert 36.2, the (if present) of the second expansion controlling ring-shaped insert 36.3 are fixed on support 36.1 by bolt.Rotated in agitating shaft 36.5
When, because external tooth 36.7 and internal tooth 36.8 mesh together, which prevent the rotation of wedge-type seal circle 36.6 so that wedge-type seal
Transfer does not occur for circle 36.6, simultaneously because using wedge-type seal circle 36.6, can make the first expansion controlling ring-shaped insert 36.2, the second expansion controlling ring-shaped insert
36.3 (if present)s firmly compress wedge-type seal circle 36.6, enhance sealing effectiveness.
The control process that the Fig. 6 of emphasis combination below crystallizes cooling control system to the present invention is described in detail.Generally,
Temperature-fall period employs the control strategy of ladder cooling, and whole temperature-fall period is divided into multiple stages, in each stage by difference
Volume ratio hot water is completed ladder and cooled with being passed through after cold water mix in chuck.In actual production, per subcrystalline initial
Temperature is substantially the same, if this initial temperature is T0, cooling terminal is room temperature, if this temperature is T1, T1 is generally in production
25 degree or so, for the sake of controlling simplicity, the water temperature of hot water storgae is maintained T0 by the present invention, and the temperature of cold rinse bank is uncontrolled,
It is room temperature T1, and according to Thermodynamics Formulas, after mixing, the temperature T in mixed tank can be calculated according to the following formula：
T=(MHeat* the M of T0 tenIt is cold*T1)/(MHeatTen MIt is cold)-------------(1)
Wherein, MHeatRepresent hot water quality in the mixed tank of injection, MIt is coldRepresent cold water quality in the mixed tank of injection, ignore hot water with
Density contrast between cold water, then mixed temperature T be：
T=(VHeat* the V of T0 tenIt is cold*T1)/(VHeatTen VIt is cold)-------------(2)
Wherein, VHeatRepresent hot water quality in the mixed tank of injection, VIt is coldCold water quality in the mixed tank of injection is represented, it is possible thereby to see
Go out, mixed water temperature is generally dependent on the volume ratio of hot water and cold water.Based on this, the present invention by control each stage it is cold/
The volume ratio of hot water, to control temperature fall off rate in crystallizing tank.
If temperature fall off rate is V, Unit positions DEG C/h, will decline it is total be divided into N number of stage, wherein N is natural number, such as can
Be 1,2,3 ..., N it is more big then cooling control is gentler, but as N increase needs the volume ratio of frequently adjustment hot water or cold water,
Add control and production cost.As shown in figure 8, n-th of temperature-fall period is represented with n, n value is 0,1,2 ..., N, often
The duration Tn that controls of individual temperature-fall period is：
Tn=(T0-T1)/VN------------- (3)
N-th of temperature-fall period time started, tn was：Tn=(T0-T1)/(N-n+1) V.
The volume ratio of hot water and cold water is in each mixed tank of stage injection：
VHeat：VIt is cold=(N-n)：n-------------(4)
By first flowmeter 24 measure hot water flow, by second flowmeter 25 measure cold water flow, controller according to
Flow can calculate the volume of hot and cold water in the mixed tank of injection, so as to control the volume ratio of hot and cold water in the mixed tank of injection.
After enough mixing waters are injected into mixed tank, in start time next stage, unlatching water injecting pump 29, the water filling into chuck 31,
Water temperature in chuck 31 is monitored by the 4th thermometer 34, when water temperature in chuck 31 and roughly equal water temperature in mixed tank, stopped
Only water filling, due to the influence of the uncertain factors such as the continuity of production, the accuracy of thermometer, water temperature and mixed tank in chuck 31
Interior water temperature generally will not be definitely equal, so will result in the oscillatory of control system, and water injecting pump 29 can be opened frequently
The water filling into chuck 31, crystallization process is unstable, and a threshold value can be set for this, when water temperature in chuck 31 and water temperature in mixed tank
Difference then stop water filling when being less than the threshold value, such as the threshold value can be 0.5 degree, and so as to avoid the vibration of system, water filling is complete
Cheng Hou, stirring, cooling water in gum cover is set to carry out hot friendship Change with material in crystallizing tank, it is same in this phase until next temperature-fall period, beat
A small amount of remaining water in the mixed tank of the first valve 27 emptying on cold rinse bank is opened, prepares cooling down water for next stage, under
Hot water or cold water's volume ratio that one temperature-fall period needs, injects cooling water into mixed tank, in start time next stage, opens note
Water pump 29, the water filling into chuck 31, such iterative cycles, until crystallizing outlet temperature.
The invention discloses：Whole control process can represent that it comprises the following steps with Fig. 9 flow chart：
S501：Hot water storgae temperature is kept to keep cold rinse bank temperature for crystallization initial temperature T0 as crystallization finishing temperature T1.It is real
In the production of border, typically carrying out heating by heater for hot water storgae makes its water temperature keep but be set in whole production process
T0, and heating or cooling measure are not taken it typically for cold rinse bank, it is in room temperature.
S502：Set rate of temperature fall V and total stage N that cools.Such as can be by the touch-screen or key that are connected with controller
The input equipments such as disk are by V and two parameter value input controllers of N.
S503：Each temperature-fall period initial time is calculated, wherein n-th of stage initial time tn is calculated by following formula：tn
=(T0-T1)/(N-n+1) V.
S504：Each stage hot and cold water volumetric mixture ratio is calculated, wherein n-th of stage hot and cold water volumetric mixture ratio is：
VHeat：VIt is cold=(N-n)：n.
S505：Mixed cooling water is injected into crystallizing tank chuck.
S506：Judge whether water temperature is equal to water temperature in mixed tank in chuck；Or judge in chuck in water temperature and cold rinse bank
Whether the difference of water temperature is less than given threshold.
S507：When judge in chuck water temperature be equal in mixed tank in water temperature, or chuck water temperature and water temperature in cold rinse bank it
When difference is less than given threshold, turn on agitator to next temperature-fall period.
S508：N adds 1, and as n=N, whole temperature-fall period terminates.
T0 is 50 degree, and T1 is 25 degree, and N is set as that 25, V is set as 10 DEG C/h, is dropped according to above-mentioned cooling control strategy
Temperature control system, actual temperature lowering curve is determined, as shown in Figure 10, curve a represents preferable temperature lowering curve in figure, and curve b represents actual measurement
Curve, as can be seen from the figure for measured curve substantially around ideal curve, maximum difference is 0.83, meets technological requirement.Pass through
Control to rate of temperature fall, controls the crystal formation and granularity of crystallization well, and control system is cooled using hot and cold water mixing ladder
Strategy, algorithm is easy, and control system cost is low, reliable.
The invention discloses：S600：Crystal obtains six water strontium chlorides through centrifuge filtration washing.
Anhydrous strontium chloride further can also be prepared by six water strontium chlorides as made from above-mentioned steps.
The invention discloses：S700：Dry and dry, drying temperature is 140 DEG C~320 DEG C, and is incubated 2~3h, is made
Anhydrous strontium chloride.Wherein, drying process can use the drying equipment of prior art to be dried.Preferably, drying process is to incite somebody to action
Six water strontium chlorides, which are put into Vibratingfluidbeddrier, to be dried.
The present invention can be used for, using strontium slag production strontium chloride, reclaiming strontium salt therein and economizing on resources；Using inclination in production
Ball mill, input and output material side makes, and is hardly damaged production efficiency height；By the control to rate of temperature fall, crystallization is controlled well
Crystal formation and granularity, for control system using hot and cold water mixing ladder cooling strategy, algorithm is easy, and control system cost is low, runs
Reliably.
Many details are elaborated in the above description so that in fully understanding the present invention.But above description is only
Presently preferred embodiments of the present invention, the invention can be embodied in many other ways as described herein, therefore this
Invention is not limited by specific implementation disclosed above.Any those skilled in the art are not departing from the technology of the present invention simultaneously
In the case of aspects, all technical solution of the present invention is made using the methods and technical content of the disclosure above many possible
Changes and modifications, or it is revised as the equivalent embodiment of equivalent variations.Every content without departing from technical solution of the present invention, according to this
The technical spirit of invention still falls within skill of the present invention to any Jian Unit modifications, equivalent variations and modification made for any of the above embodiments
In the model circle of art scheme protection.
Claims (3)
- A kind of 1. method of strontium slag production strontium chloride, it is characterised in that：Comprise the following steps：S100：Weigh 100-200kg celestines, 50-250kg feed coals carry out reduction roasting in rotary furnace under the high temperature conditions Burn, thick barium, the strontium material for being calcined to obtain be added into the closed leaching can equipped with water, temperature-pressure stir cause thick barium, strontium material with Water reacts, and the solidliquid mixture in leaching can is sent into centrifuge, is separated through centrifuge, useful solution is collected, strontium slag quilt It is sent into the ball mill；Wherein, before celestine and feed coal put rotary furnace roasting into, celestine and feed coal are put into powder Broken machine crushes 10-15min；S200：Strontium slag is through ball mill grinding into slurry；The ball mill includes barrel, the outer barrel being obliquely installed, and barrel is fixed on In outer barrel, barrel is obliquely installed, and it is 27-53 degree with horizontal plane angle, and the mesh communicated with outer barrel, outer barrel are offered on barrel By upper flat segments, lower flat segments and the tilting section between upper flat segments and lower flat segments, the outside of upper flat segments is set There is the first guide rail, the first support wheel is stuck in the first guide rail, and the second guide rail, the second support wheel card are provided with the outside of lower flat segments In the second guide rail, conveyor screw is provided with the madial wall of outer barrel, barrel bottom is connected with rotating shaft, and rotating shaft passes through decelerator It is connected with motor；S300：Hydrochloric acid is added in the slurry until the solid particle in slurry is not redissolved；Wherein, the hydrochloric acid is to pass through electrolysis What method was prepared, its preparation process is as follows：1) saturated aqueous common salt is electrolysed, in addition to sodium hydroxide is obtained, produced in negative electrode Raw hydrogen, chlorine is produced in anode；2) hydrogen and chlorine are passed to the burner ignition of quartz system in the reactor, generate chlorine Change hydrogen；3) it is only absorbed by the water after hydrogen chloride gas is cooled down as hydrochloric acid；S400：Filter off and remove residue, filtrate is refined；The step S400 includes：Hydrogen peroxide and strontium hydroxide are added, is adjusted PH to 8~10 is saved, is heated to 60~70 DEG C, is stirred, filtering, removes residue；S500：Crystallisation by cooling, 5 DEG C/h~10 DEG C of crystallization cooling rate/h, cooled using cooling control system by ladder and controlled Crystallize cooling rate；The cooling control system includes hot water storgae, cold rinse bank, mixed tank, crystallizing tank and controller, is placed with hot water storgae First thermometer, be placed with second temperature meter in cold rinse bank, mix and the 3rd thermometer is placed in tank, hot water storgae by heat-exchanger pump with Mixed tank is connected, and is provided with first flowmeter on the hot-water line between heat-exchanger pump and mixed tank, cold rinse bank by water supply pump with Mixed tank is connected, and second flowmeter is provided with the cold water pipe between water supply pump and mixed tank, and mixed tank is connected by water injecting pump Connect crystallizing tank；Crystallizing tank is using jacket structured, including inner canister and chuck, and chuck Bao Li are outside inner canister, chuck and water injecting pump phase Even, drainpipe and water discharging valve are additionally provided with chuck, the 4th thermometer is provided with chuck, stirring is provided with inner canister Device, the 5th thermometer and pressure gauge, agitator are connected through axle sealing structure with motor, are stirred by motor driving Device rotation is mixed, charging aperture is further opened with the top of inner canister, charging aperture connects feed pump by feed pipe, on feed pipe 3rd flowmeter, the first thermometer, second temperature meter, the 3rd thermometer, the 4th thermometer, the 5th thermometer, first are installed Flowmeter, second flowmeter, the 3rd flowmeter, pressure gauge, heat-exchanger pump, water supply pump, water injecting pump, feed pump and motor are equal It is connected with controller；The axle sealing structure, axle sealing structure include wedge-type seal circle, the first expansion controlling ring-shaped insert and positioned at crystallization tank decks The support in portion, wedge-type seal snare are provided with outer on agitating shaft and by stent clamping on the outside of the wedge portion of wedge-type seal circle Tooth, internal tooth is set in the inner side of the first expansion controlling ring-shaped insert, external tooth can be intermeshed with internal tooth；S600：Crystal obtains six water strontium chlorides through centrifuge filtration washing.S700：Dry and dry, drying temperature is 140 DEG C~320 DEG C, and is incubated 2~3h, and anhydrous strontium chloride is made；Wherein, do Drying process is dried for six water strontium chlorides are put into Vibratingfluidbeddrier.
- 2. the method for strontium slag production strontium chloride according to claim 1, it is characterised in that：The step S500 includes：S501：Hot water storgae temperature is kept to keep cold rinse bank temperature for crystallization initial temperature T0 as crystallization finishing temperature T1；S502：Set rate of temperature fall V and total stage N that cools；S503：Each temperature-fall period initial time is calculated, wherein n-th of stage initial time tn is calculated by following formula：Tn= (T0-T1)/(N-n+1)V；S504：Each stage hot and cold water volumetric mixture ratio is calculated, wherein n-th of stage hot and cold water volumetric mixture ratio is：VHeat：VIt is cold= (N-n)：n；S505：Mixed cooling water is injected into crystallizing tank chuck；S506：Judge whether water temperature is equal to water temperature in mixed tank in chuck；Or judge water temperature and water temperature in cold rinse bank in chuck Difference whether be less than given threshold；S507：When water temperature is small equal to the difference of water temperature in water temperature in water temperature, or chuck in mixed tank and cold rinse bank in judgement chuck When given threshold, turn on agitator to next temperature-fall period；S508：N adds 1, and as n=N, whole temperature-fall period terminates.
- A kind of 3. strontium chloride prepared using claim 1 method.
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| CN109502623A (en) * | 2018-04-30 | 2019-03-22 | 赵怡欣 | The method of strontium slag production strontium chloride |
| CN112578745A (en) * | 2020-09-28 | 2021-03-30 | 山东鲁泰化学有限公司 | Intelligent control method for hydrogen chloride synthesis reaction process |
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