CN201815310U

CN201815310U - Slurry mixing device with homodisperse ferric phosphate mixing function

Info

Publication number: CN201815310U
Application number: CN2010205714128U
Authority: CN
Inventors: 王晓薇
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-21
Filing date: 2010-10-21
Publication date: 2011-05-04
Anticipated expiration: 2020-10-21

Abstract

The utility model discloses a slurry mixing device with a homodisperse ferric phosphate mixing function. The slurry mixing device comprises a reaction vessel and a material discharge hole formed at the bottom of the reaction vessel, wherein mixing blades are mounted in the reaction vessel; a material leakage plate dividing the reaction vessel into a material storage cavity and a material mixing cavity is arranged above the mixing blades and connected with the reaction vessel; and feed pipes are arranged on the reaction vessel above the material leakage plate in the radial direction. When the slurry mixing device is used, different raw material liquids including alkali liquor are all fed into the material storage cavity from different feed pipes, and flow out of the material leakage plate after entering into the material storage cavity, and then enter into the material mixing cavity; and the influent liquids are instantly and fiercely stirred and mixed by a high-speed rotating stirrer and flung to the inner wall of the material mixing cavity to be dashed for another mixing, then flow down the inner wall into the vessel, and the homogeneous mixing of the slurry is fulfilled. Therefore, homogeneous material performance is effectively ensured in a ferric phosphate mixing process.

Description

Has the synthetic sizing device that mixes of homodisperse ferric phosphate

Technical field

The utility model relates to a kind of mixed sizing device that utilizes the precipitation method to make the ferric phosphate material, and specifically a kind of have a synthetic sizing device that mixes of homodisperse ferric phosphate, can realize the compounding effect of homogeneous reaction.

Background technology

The ferric phosphate material generally all is to adopt molysite and phosphate reaction to make.For example adopt ferric irons such as ferric sulfate, ferric nitrate, iron chloride, perhaps ferrous iron such as ferrous sulfate becomes ferric iron by oxidation, contains the substance reaction of phosphate anion then with phosphoric acid, sodium phosphate etc.Solution at first reaches acid stronger low pH value, slowly adds alkaline matter then, and solution is adjusted to neutrality, forms the ferric phosphate precipitation.In general, the performance of ferric phosphate material depends on pH value condition strongly, and the pH value is too high hangs down the quality that all has a strong impact on ferric phosphate with crossing.For example synthetic ferric phosphate contains iron hydroxide impurity under higher pH value condition, and on the low side than ferric phosphate material iron content synthetic under the low ph condition.

In hybrid reaction, alkaline matter generally needs slowly to add, and strong agitation is so that the pH value of whole solution changes equably.In this process, mixed methods such as general stirring, convection current are not enough to realize that whole solution is even, cause the pH value uneven distribution of solution.Therefore cause ferric phosphate properties of product instability.In addition, the reaction raw materials of traditional approach is to carry out in reactor, and the uneven synthetic problem that slurry flows out from the Mixed Zone of mixing will take place like this.

Summary of the invention

In view of above-mentioned present situation, the purpose of this utility model provides a kind of synthetic sizing device that mixes of homodisperse ferric phosphate that has.Make it utilize the high speed centrifugation dispersion technology, the solution of different systems is realized mixing uniformly rapidly, thereby realize that reaction mixes rapidly and uniformly.

The technical solution that the utility model adopted is: a kind of have a synthetic sizing device that mixes of homodisperse ferric phosphate, comprise the relief hole that reaction vessel and bottom thereof are provided with, in its reaction vessel, stirring vane is installed, the top of described stirring vane is provided with the leakage charging tray that is partitioned into storage cavity and batch mixing chamber and is connected with reaction vessel, and the footpath that is positioned at the reaction vessel that leaks charging tray top upwards is provided with feed pipe.During application, different raw material liqs comprises that alkali lye all adds from different feed pipes respectively.After entering in the storage cavity, enter the batch mixing chamber from leaking the charging tray outflow.The stirring vane that the liquid that flows into is rotated at a high speed at once mixes consumingly, is thrown on the inwall in batch mixing chamber again through mixings that be impacted, and suitable then inwall runs down in the container, finishes the even mixing of slurry.

In this was novel, related stirring vane was for being symmetrical arranged, or was 120 ° of distributions.Should decide on the condition of production, preferred blade is 120 ° of distributions.

Further, described blade is straight plate shape, or propeller shape, or makes S shape.

In this was novel, the batch mixing cavity wall surface in the described reaction vessel was the polishing minute surface.Be used to guarantee the synthetic slurry good mobility of mixing of homodisperse ferric phosphate.

In this was novel, involved leakage charging tray was the assembly of overall structure or a plurality of minutes body structures, is distributed with material spilling hole on this leakage charging tray, and its aperture is 0.6-1mm.

In the utility model, the reaction vessel of indication, blade, leakage charging tray are to select the SUS304 austenitic stainless steel material for use.

In a word, the beneficial effects of the utility model are: because of having adopted the high speed centrifugation dispersion technology, the solution of different systems is realized mixing uniformly rapidly, solved the uneven problem of batch mixing in the ferric phosphate building-up process effectively.Different raw material liqs enter hybrid chamber from zones of different, by behind the blade bump, are thrown to the batch mixing cavity wall and carry out the secondary impact batch mixing rapidly, and twice mixing guaranteed the realization of the microcosmic and the macro-uniformity of batch mixing.Compare the mixing method that stirs in the reactor, the uniformity of slurry and composition uniformity increase substantially.Before reaction, raw material all is to exist alone, the nucleation core that does not exist pre-reaction to cause.Can further guarantee like this product uniformity and become more meticulous, improve the quality of products effectively.

Experiment shows, utilizes the synthetic ferric phosphate of this mixing arrangement, stably reaches the grain warp of 1-2 micron, and the iron phosphorus composition is extremely stable.LiFePO 4 material with this ferric phosphate manufacturing has up to the discharge gram volume of 155mAh/g and good product batches uniformity.

Description of drawings

Fig. 1 is a cutaway view of the present utility model;

Fig. 2 is Fig. 1 blade view;

Fig. 3 is Fig. 1 profile.

The specific embodiment

Synthesize mixed sizing device by Fig. 1, Fig. 2, the homodisperse ferric phosphate that has shown in Figure 3, comprise the relief hole 10 that reaction vessel 9 and bottom thereof are provided with.In described reaction vessel 9 agitator is installed, described agitator is made the blade 7 of S shape and is welded on the rotary main shaft 6 by being 120 ° of distributions, connects drive motors (not providing among the figure) by rotary main shaft 6 and forms, guarantees the coincidence of pivot and center of gravity.Present embodiment is selected the blade 7 of S shape for use, in order to increase rigidity and breakup of drop effect.During assembling, rotary main shaft 6 is directly drawn outside the reaction vessel 9, at rotary main shaft 6 and reaction vessel 9 matching parts sealing gasket 5 is installed, overflow at slurry conrotatory alternation of hosts axle 6 places of splashing that produce when avoiding rotary main shaft 6 work.In the present embodiment, the top of described stirring vane 7 is provided with the leakage charging tray 3 that is partitioned into storage cavity 2 and batch mixing chamber 8 and fixedlys connected with reaction vessel 9.According to application characteristic, mirror process is polished on the batch mixing cavity wall surface in the reaction vessel 9.This novel leakage charging tray 3 is to adopt three assemblys that are fan-shaped minute body structure, is distributed with material spilling hole 4 on this leakage charging tray 3, and its aperture is 0.6-1mm.The footpath that is positioned at the reaction vessel 9 that leaks charging tray 3 upper ends upwards is provided with the feed pipe 1 that is 120 ° of distributions.

Leakage charging tray related in the present embodiment adopts outside the assembly of a plurality of minutes body structures, also can use overall structure earlier.

Blade 7 related in the present embodiment also can be symmetrical arranged except adopting 120 ° of distributions.In like manner, described blade 7 also can be made into straight plate shape except selecting S shape for use, or propeller shape.

This novel reaction vessel 9 is cylindrical, and it is neglected production output greatly and decides.Feed pipe 1 can have a plurality of according to the material system difference, adopts symmetric arrangement.Material spilling hole 3 diameters generally are not more than 1mm.

The sealing gasket 5 that this is novel can adopt polytetrafluoroethylene (PTFE), rubber or engineering plastics manufacturing.

Conventional assembly method is adopted in the inside of this device, adopts welding manner between feed pipe 1 and the reaction vessel 9.

Operating process of the present utility model is such: open rotary main shaft 6, drive blade 7 rotation at a high speed, after reaching stabilized (steady-state) speed, raw material is injected from different feed pipes 1 respectively, raw material enters storage cavity 2 and enters batch mixing chamber 8 by material spilling hole 4, the raw material that flows into batch mixing chamber 8 is acutely mixed in narrow space, and liquid reaches even mixing through blade 7 and twice bump of reaction vessel 9 inwalls, from relief hole 10 outflows of 8 bottoms, batch mixing chamber.

This novel enforcement key is that the slurry after having avoided the reaction raw materials of traditional approach to flow out from conversion zone does not have uniformity and the conforming problem of composition, and by after this novel processing, the slurry that is mixed rapidly can flow out along batch mixing chamber 8 inwalls, forms the slurry of homogeneous reaction.

Claims

1. has the synthetic sizing device that mixes of homodisperse ferric phosphate, it is characterized in that, comprise the relief hole (10) that reaction vessel (9) and bottom thereof are provided with, stirring vane (7) is installed in its reaction vessel (9), the top of described stirring vane (7) is provided with the leakage charging tray (3) that is partitioned into storage cavity (2) and batch mixing chamber (8) and is connected with reaction vessel (9), and the footpath that is positioned at the reaction vessel (9) that leaks charging tray (3) top upwards is provided with feed pipe (1).

2. have a synthetic sizing device that mixes of homodisperse ferric phosphate by claim 1 is described, it is characterized in that, described stirring vane (7) is for being symmetrical arranged, or is 120 ° of distributions.

3. have a synthetic sizing device that mixes of homodisperse ferric phosphate by claim 2 is described, it is characterized in that described blade (7) is straight plate shape, or propeller shape, or makes S shape.

4. have a synthetic sizing device that mixes of homodisperse ferric phosphate by claim 1 is described, it is characterized in that batch mixing chamber (8) inner wall surface in the described reaction vessel (9) is the polishing minute surface.

5 have a synthetic sizing device that mixes of homodisperse ferric phosphate by claim 1 is described, it is characterized in that described leakage charging tray (3) is the assembly of overall structure or a plurality of minutes body structures, are distributed with material spilling hole (4) on this leakage charging tray (3), and its aperture is 0.6-1mm.