CN103263960B - A kind of slurry apparatus for grinding and dispersing and method thereof - Google Patents
A kind of slurry apparatus for grinding and dispersing and method thereof Download PDFInfo
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- CN103263960B CN103263960B CN201310178649.8A CN201310178649A CN103263960B CN 103263960 B CN103263960 B CN 103263960B CN 201310178649 A CN201310178649 A CN 201310178649A CN 103263960 B CN103263960 B CN 103263960B
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- 239000002002 slurry Substances 0.000 title claims abstract description 216
- 238000000227 grinding Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 52
- 230000008676 import Effects 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 12
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000007613 slurry method Methods 0.000 claims description 3
- 230000004087 circulation Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000009288 screen filtration Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 12
- 230000000704 physical effect Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 12
- 239000000919 ceramic Substances 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
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- 238000005516 engineering process Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
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- 238000004886 process control Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000002482 conductive additive Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
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Abstract
<b> the invention discloses a kind of slurry apparatus for grinding and dispersing, comprise abrading cylinder and mill basket, described mill basket comprises the annular framework be made up of multi-layer wear-resistant ring and the convolution cutter being located at the extension of described ring frame body external circumferential, described convolution cutter is horizontal by certain angle, also be provided with a filter screen in described abrading cylinder, and described filter screen is located at above or below described mill basket.The invention also discloses two kinds of methods of slurry apparatus for grinding and dispersing ground slurry, and comprise slurry ground and mixed equipment and the Ginding process thereof of slurry apparatus for grinding and dispersing.Grinding distribution method of the present invention can effectively improve slurry physical property, makes slurry density raising, more even, smooth exquisiteness, effectively enhances productivity, directly can process thick, poor fluidity, that viscosity is large slurry.</b>
Description
Technical field
the present invention relates to field of mechanical technique, be specifically related to a kind of apparatus for grinding and dispersing, particularly a kind of slurry apparatus for grinding and dispersing and method thereof.
Background technology
the preparation of slurry is step very important in Production Process of Lithium Battery.Effect prepared by slurry will directly affect the Painting effect of pole piece, and then affects production technology and the capability and performance of further battery.
the dispersion effect of slurry is determined by many factors, comprising: the character of active material itself, material mixture ratio, equipment and preparation technology etc.Current prepare slurry equipment and method generally have following several typical way:
1) slurry just completes preparation in dispersed with stirring device, in the dispersed with stirring device used, stirring-head and dispersing head is housed.But the dispersion efficiency of this device is lower, in order to reach the fineness requirement of slurry, often need longer preparation time; Slurry easy entrained gas in whipping process simultaneously, forms bubble, needs to vacuumize pressurize and carry out froth breaking after stirring; And the slurry uniformity of preparation is not good, change greatly in viscosity, process control is more difficult.
2) slurry just completes preparation in dispersed with stirring device, in the dispersed with stirring device used, stirring-head and mill basket is housed.Although the dispersion efficiency of the mill basket of this device to slurry improves, but due to the size of mill basket and running orbit limited, cannot ensure that within the limited time in stirred vessel, slurry is all ground, cause slurry uneven, process control is more difficult.
3) slurry completes preparation being similar in above-mentioned mixing decentralized system, system is made up of dispersed with stirring device, apparatus for grinding and dispersing and the circulatory system, the apparatus for grinding and dispersing used, as sand mill, colloid mill, nanometer mill etc., the feature of these apparatus for grinding and dispersing is all ground the slurry entered in grinding container, but it has strict demand to the fineness of slurry, cross the blocking that thick, poor fluidity, that viscosity is large slurry all can cause grinding container, impact is produced and is carried out continuously.Therefore, this system is used to carry out slurry when preparing, slurry must through long dispersed with stirring in dispersed with stirring device, then just can enter in apparatus for grinding and dispersing and carry out grinding distribution, the utilization rate of apparatus for grinding and dispersing is obviously reduced, the cost of whole system is higher, operating efficiency is very low.In addition, full-bodied slurry also cannot use this mixing decentralized system.
in sum, there is the problem that production efficiency is low, slurry is uneven, process control is difficult to and equipment is not strong to different slurry adaptability in the slurry preparation method of current use.The present invention comes therefrom.
Summary of the invention
the technical problem of first aspect to be solved by this invention is to overcome above-mentioned prior art Problems existing, provides a kind of slurry apparatus for grinding and dispersing.
the problem of second aspect to be solved by this invention, is the grinding distribution slurry methods providing a kind of above-mentioned apparatus for grinding and dispersing.
the problem of the third aspect to be solved by this invention, is to provide a kind of slurry ground and mixed equipment comprising above-mentioned slurry apparatus for grinding and dispersing.
the problem of fourth aspect to be solved by this invention, is the method for the mixing dispersed paste providing a kind of above-mentioned slurry ground and mixed equipment.
in order to solve the problems of the technologies described above, a first aspect of the present invention technical scheme is: a kind of slurry apparatus for grinding and dispersing, comprises abrading cylinder and mill basket, and motor drives the mill basket High Rotation Speed be located in abrading cylinder by a main shaft, it is characterized in that:
described mill basket comprises the annular framework, the abrasive media in framework that are made up of multi-layer wear-resistant ring,
be located at the flange upper with holes of described annular framework upper and lower and lower flange with holes respectively, and be located at the convolution cutter of described ring frame body external circumferential extension, described convolution cutter is horizontal by certain angle;
also be provided with a filter screen in described abrading cylinder, and described filter screen is located at above or below described mill basket.
mill basket comprises wear ring, pad, upper flange with holes, lower flange with holes; Shim clip is at wear ring, and as between ceramic ring or antifriction metal (AFM) ring, multi-layer wear-resistant ring forms an annular framework, and upper and lower flange with holes and multilayer loop are bolted formation cavity, and abrasive media (as ceramic bead) is positioned in cavity; Gap between ring is less than the minimum dimension of abrasive media, is convenient to slurry and flows out.And the size of sieve meshes is determined according to the size of abrasive media, ensure that filter screen can stop the abrasive media of minimum dimension.
further, when the convolution cutter running of default mill basket has downward active force to slurry, filter screen is located on described mill basket, under upper import and export, is horizontal structure;
when default mill basket convolution cutter running to slurry have upwards active force time, filter screen is located under described mill basket, on lower import and export, is horizontal structure.
further, described circumference extend convolution cutter and horizontal plane angle be 30 °-60 °.Be preferably 45 °, when mill basket rotates, it is best that 45 ° of convolution cuttves order about the effect that slurry moves downward.The object of angle is when mill basket rotates, and convolution cutter has active force downward or upward to slurry; Convolution cutter outer in mill basket is greater than 1mm from the distance of casing wall, is less than 100mm.
the problem of second aspect to be solved by this invention, a kind of grinding distribution slurry methods of slurry apparatus for grinding and dispersing is provided, it is characterized in that, circulating pump by slurry from below or top pump in abrading cylinder, when mill basket rotates, slurry circumferentially to circle round the effect of cutter by mill basket, convolution cutter is to the active force that slurry produces and feedstock direction is reverse, superposition circulating pump is to the active force of slurry entering abrading cylinder, order about slurry to enter mill basket from the flange with holes of the one side of mill basket and carry out fine gtinding, then slurry is extruded from the flange with holes of the gap between mill basket wear ring or another side again, finally by filter screen, flow back to dispersed with stirring device from import and export again.
further, slurry pumps in abrading cylinder by circulating pump from below, when mill basket rotates, slurry circumferentially to circle round the effect of cutter by mill basket, convolution cutter produces downward active force to slurry, superposition circulating pump is to the slurry active force upwards entering abrading cylinder, order about slurry to enter mill basket from the flange with holes of mill basket bottom and carry out fine gtinding, then slurry is extruded from the flange with holes on the gap between mill basket wear ring or top again, finally by filter screen, flow back in dispersed with stirring device from upper import and export via slurry efferent duct.
further, slurry pumps into abrading cylinder from top by circulating pump, when mill basket rotates, slurry circumferentially to circle round the effect of cutter by mill basket, convolution cutter produces active force upwards to slurry, superposition circulating pump is to the downward active force of the slurry entering abrading cylinder, order about slurry to enter mill basket from the flange with holes on mill basket top and carry out fine gtinding, then slurry is extruded from the flange with holes of the gap between mill basket wear ring or bottom again, finally by filter screen, flow back in dispersed with stirring device from lower import and export via slurry efferent duct.
the problem of the third aspect to be solved by this invention, provide a kind of slurry ground and mixed equipment, it is characterized in that, comprise dispersed with stirring device, slurry apparatus for grinding and dispersing and the circulatory system making size circulations reciprocal be connected between described dispersed with stirring device, slurry apparatus for grinding and dispersing.
further, the material efferent duct of described dispersed with stirring device is connected to the stream of slurry entrance of slurry apparatus for grinding and dispersing, and the slurry efferent duct of described slurry apparatus for grinding and dispersing is connected to the stream of slurry entrance of dispersed with stirring device.
dispersed with stirring device comprises all kinds of mixer, as: de-airing mixer, planetary dispersator, scrape wall type mixer etc., its function is carried out mixing and disperseing at powder and dispersant (as the liquid such as water, alcohol), and being formed can the slurry of continuous-flow.Dispersed with stirring device rotary speed is adjustable, according to the relation of output power of motor=moment of torsion * angular speed, according to slurry viscosity, controls motor speed, ensures that moment of torsion * angular speed is not more than output power of motor.The circulatory system comprises circulating pump and connecting pipe, and its function is for the flowing of slurry provides power and passage, controls flow velocity and the flow of slurry.
the problem of fourth aspect to be solved by this invention, provide a kind of method of mixing dispersed paste of above-mentioned slurry ground and mixed equipment, it comprises the steps:
1) first powder and dispersant are added in dispersed with stirring device and tentatively mix, being formed can the slurry of continuous-flow;
2) while maintenance dispersed with stirring device runs continuously, by above-mentioned slurry transferring to apparatus for grinding and dispersing, fine gtinding is carried out to slurry by the circulatory system;
3) slurry flows back in dispersed with stirring device again and continues dispersed with stirring after fine gtinding;
4) circulatory system ensures that slurry circulates between dispersed with stirring device and apparatus for grinding and dispersing with certain flow, until the density of slurry parameter, viscosity, domain size distribution reach examination criteria.
further, in step (2), the mode of the grinding of slurry turnover apparatus for grinding and dispersing has two kinds:
mode A, filter screen is arranged on mill basket, under upper import and export, the direction of rotation of mill basket makes convolution cutter have downward active force to slurry, slurry enters from the below of apparatus for grinding and dispersing or bottom, through the slurry of mill basket grinding, after filter screen filtration, flow out from the enterprising outlet of apparatus for grinding and dispersing;
mode B, filter screen is arranged under mill basket, on lower import and export, the direction of rotation of mill basket makes convolution cutter have active force upwards to slurry, slurry enters from the top of apparatus for grinding and dispersing or top, through the slurry of the grinding of mill basket, after strainer filtering, flow out from the lower import and export of apparatus for grinding and dispersing.
the described circulatory system is provided with circulating pump, drives slurry to circulate between dispersed with stirring device and apparatus for grinding and dispersing, slurry is mixed in constantly circulating, grinds, until reach the dispersion effect of examination criteria.
in above-mentioned slurry mixing process for dispersing, slurry is finely ground in apparatus for grinding and dispersing, and when pulp particle degree is less, slurry is comparatively easy to enter in mill basket and carries out grinding distribution; When pulp particle degree is larger, due to the High Rotation Speed of mill basket, larger particle gets rid of to casing wall by centrifugal action, and bulky grain is carried out cutting dispersion by mill basket convolution cutter circumferentially, reduces oarse-grained particle diameter gradually, until it can enter mill basket; Such apparatus for grinding and dispersing can enter in mill basket with regard to the slurry that can ensure to enter abrading cylinder and carry out grinding distribution.
slurry easily infiltrates gas in whipping process, forms bubble; When slurry enters apparatus for grinding and dispersing, the mill in mill basket is situated between and is broken up by the bubble in slurry.When slurry enters mill basket from the bottom of apparatus for grinding and dispersing, slurry is after grinding, and bubble is broken up, and bubble moves upward along with slurry, in the air be melt into above slurry.
mixing process for dispersing of the present invention can effectively improve slurry physical property, makes slurry density raising, more even, smooth exquisiteness, effectively enhances productivity, directly can process thick, poor fluidity, that viscosity is large slurry.
compared to solution of the prior art, advantage of the present invention:
1, the present invention adopts the mixing and dispersing device be made up of dispersed with stirring device, apparatus for grinding and dispersing and the circulatory system to process slurry, can be disperseed by slurry fast, effectively shortens slurry preparation time, enhances productivity.
2, the present invention prepares in the process of slurry, and apparatus for grinding and dispersing can be good at the bubble in slurry to break up, and bubble is melt in air along with slurry moves upward, without the need to vacuumizing to slurry bubble of cooling down.Compared with conventional method, slurry density prepared by this method significantly improves, and more even, smooth exquisiteness.
3, the adaptability of the present invention to the slurry of variable grain degree is better; Have mill basket in described apparatus for grinding and dispersing, when pulp particle degree is less, slurry is comparatively easy to enter in grinding hurdle and carries out grinding distribution; When pulp particle degree is larger, bulky grain is broken up by the convolution cutter of mill basket, until it can enter in mill basket, can not cause the blocking of apparatus for grinding and dispersing.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is the system architecture schematic diagram of slurry of the present invention turnover apparatus for grinding and dispersing A mode (bottom in and top out);
fig. 2 is the system architecture schematic diagram of slurry of the present invention turnover apparatus for grinding and dispersing B mode (upper entering and lower leaving);
fig. 3 is the internal structure schematic diagram of apparatus for grinding and dispersing of the present invention;
fig. 4 is the structural representation of mill basket of the present invention.
wherein: 1 is dispersed with stirring device; 2 is slurry apparatus for grinding and dispersing; 3 is the circulatory system; 4 is motor; 5 is filter screen; 6 is abrading cylinder; 7 is mill basket; 8 is main shaft; 9 is upper import and export; 10 is upper flange with holes; 11 is convolution cutter; 12 is abrasive media; 13 is ceramic ring or antifriction metal (AFM) ring; 14 is pad; 15 is lower flange with holes, and 16 is annular framework, and 17 is lower import and export.
Detailed description of the invention
below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiments are not limited to for illustration of the present invention limit the scope of the invention.The implementation condition adopted in embodiment can do further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
as Figure 3-Figure 4, a kind of slurry apparatus for grinding and dispersing, comprise abrading cylinder 6 and mill basket 7, motor 4 drives mill basket 7 High Rotation Speed be located in abrading cylinder 6 by a main shaft 8, and described mill basket 7 comprises wear ring, pad 14, upper flange 10 with holes, lower flange 15 with holes, convolution cutter 11; Described multi-layer wear-resistant ring, can be ceramic ring or antifriction metal (AFM) ring, its looping framework 16, shim clip is between ceramic ring or antifriction metal (AFM) ring, and annular framework 16 upper and lower is provided with flange 10 with holes and lower flange with holes 15, and upper and lower flange with holes and annular framework 16 are bolted formation cavity, abrasive media 12, as ceramic bead is positioned in cavity, the gap between ring is less than the minimum dimension of abrasive media, is convenient to slurry and flows out; Be located at the convolution cutter 11 that annular framework 16 external circumferential extends, convolution cutter 11 is horizontal by certain angle; Also be provided with a filter screen 5 in abrading cylinder, and this filter screen 5 is located at above or below described mill basket 7.
in a preferred embodiment of the present invention, slurry apparatus for grinding and dispersing 2 as shown in Figure 1, when the convolution cutter 11 of default mill basket operate to slurry, there is downward active force time, filter screen 5 is located on described mill basket 7, under upper import and export 9, is horizontal structure.
in another preferred embodiment of the present invention, slurry apparatus for grinding and dispersing 2 as shown in Figure 2, when the convolution cutter 11 of default mill basket operate to slurry have upwards active force time, filter screen 5 is located under described mill basket 7, on lower import and export 17, is horizontal structure.
a kind of method one of mixing dispersed paste of slurry ground and mixed equipment, it comprises the steps:
1) first powder and dispersant are added in dispersed with stirring device and tentatively mix, being formed can the slurry of continuous-flow;
2) while maintenance dispersed with stirring device runs continuously, by above-mentioned slurry transferring to apparatus for grinding and dispersing, fine gtinding is carried out to slurry by the circulatory system,
mode A, filter screen is arranged on mill basket, under upper import and export, filter screen can be made to soak in the slurry, block filter screen, affect pulp flow after avoiding the slurry drying on filter screen when abrading cylinder is full of slurry; The direction of rotation of mill basket ensures that convolution cutter has downward active force to slurry, and the mode of slurry bottom in and top out contributes to the dissipation of bubble in slurry;
3) slurry flows back in dispersed with stirring device again and continues dispersed with stirring after fine gtinding;
4) circulatory system ensures that slurry circulates between dispersed with stirring device and apparatus for grinding and dispersing with certain flow, until the density of slurry parameter, viscosity, domain size distribution reach examination criteria.
a method two for the mixing dispersed paste of slurry ground and mixed equipment, it comprises the steps:
1) first powder and dispersant are added in dispersed with stirring device and tentatively mix, being formed can the slurry of continuous-flow;
2) while maintenance dispersed with stirring device runs continuously, by above-mentioned slurry transferring to apparatus for grinding and dispersing, fine gtinding is carried out to slurry by the circulatory system,
mode B, filter screen is arranged under mill basket, on lower import and export; The direction of rotation of mill basket ensures that convolution cutter has active force upwards to slurry, and the mode of slurry upper entering and lower leaving can ensure that the slurry flowing out lapping device can be filtered;
3) slurry flows back in dispersed with stirring device again and continues dispersed with stirring after fine gtinding;
4) circulatory system ensures that slurry circulates between dispersed with stirring device and apparatus for grinding and dispersing with certain flow, until the density of slurry parameter, viscosity, domain size distribution reach examination criteria.
concrete embodiment one
the application of a kind of slurry mixing process for dispersing on battery anode slurry is produced.By LiFePO 4, pure water, water-base cement, conductive additive SuperP altogether 262.46Kg add in dispersed with stirring device and stir, run 30min; Keep the operation of dispersed with stirring device, start cycles pump, can the slurry of continuous-flow pump in apparatus for grinding and dispersing; Then start apparatus for grinding and dispersing, ensure slurry circulating in systems in which, run 90min, slurry is detected.
same pulp furnish legacy equipment and produced in conventional processes slurry: by LiFePO 4, pure water, water-base cement, conductive additive SuperP altogether 262.46Kg add in dispersed with stirring device and carry out dispersed with stirring, run 300min; Vacuumize froth breaking 30min, then slurry is detected.
data statistics is carried out to two kinds of methods:
this method, compared with conventional method, obviously shortens slurry preparation time, fast by slurry mixing dispersion, can improve slurry density, and vacuumize bubble removing without the need to carrying out.After conventional method closes slurry, obviously there is bubble in slurry, must vacuumize bubble removing to slurry, not only extend slurry preparation time, defoaming effect is not good yet, and the slurry that density is obviously prepared than this method is low.
can reach a conclusion from above-mentioned embodiment: utilize the present invention to be disperseed by slurry fast, effectively shorten slurry preparation time, enhance productivity; And the smooth exquisiteness of slurry, uniformity is better, and slurry density also significantly improves; Directly can process thick, poor fluidity, that viscosity is large slurry.
more than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not by the restriction of above-mentioned example; what describe in above-mentioned example and description just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. a slurry apparatus for grinding and dispersing, comprises abrading cylinder and mill basket, and motor drives the mill basket High Rotation Speed be located in abrading cylinder by a main shaft, it is characterized in that,
Described mill basket comprises the annular framework, abrasive media, the flange upper with holes being located at described annular framework upper and lower respectively and the lower flange with holes in framework that are made up of multi-layer wear-resistant ring, with the convolution cutter being located at the extension of described ring frame body external circumferential, described convolution cutter is horizontal by certain angle;
Also be provided with a filter screen in described abrading cylinder, and described filter screen is located at above or below described mill basket.
2. slurry apparatus for grinding and dispersing according to claim 1, is characterized in that, when the convolution cutter running of default mill basket has downward active force to slurry, filter screen is located on described mill basket, under upper import and export, is horizontal structure;
When default mill basket convolution cutter running to slurry have upwards active force time, filter screen is located under described mill basket, on lower import and export, is horizontal structure.
3. slurry apparatus for grinding and dispersing according to claim 1 and 2, is characterized in that, the convolution cutter that described circumference extends and horizontal plane angle are 30 °-60 °.
4. the grinding distribution slurry methods of a slurry apparatus for grinding and dispersing, it is characterized in that, circulating pump by slurry from below or top pump in abrading cylinder, when mill basket rotates, slurry circumferentially to circle round the effect of cutter by mill basket, convolution cutter is to the active force that slurry produces and feedstock direction is reverse, superposition circulating pump is to the active force of slurry entering abrading cylinder, order about slurry to enter mill basket from the flange with holes of the one side of mill basket and carry out fine gtinding, then slurry is extruded from the flange with holes of the gap between mill basket wear ring or another side again, finally by filter screen, flow back to dispersed with stirring device from import and export again.
5. method according to claim 4, it is characterized in that, slurry pumps in abrading cylinder by circulating pump from below, when mill basket rotates, slurry circumferentially to circle round the effect of cutter by mill basket, convolution cutter produces downward active force to slurry, superposition circulating pump is to the slurry active force upwards entering abrading cylinder, order about slurry to enter mill basket from the flange with holes of mill basket bottom and carry out fine gtinding, then slurry is extruded from the flange with holes on the gap between mill basket wear ring or top again, finally by filter screen, flow back in dispersed with stirring device from upper import and export via slurry efferent duct.
6. method according to claim 4, it is characterized in that, slurry pumps into abrading cylinder from top by circulating pump, when mill basket rotates, slurry circumferentially to circle round the effect of cutter by mill basket, convolution cutter produces active force upwards to slurry, superposition circulating pump is to the downward active force of the slurry entering abrading cylinder, order about slurry to enter mill basket from the flange with holes on mill basket top and carry out fine gtinding, then slurry is extruded from the flange with holes of the gap between mill basket wear ring or bottom again, finally by filter screen, flow back in dispersed with stirring device from lower import and export via slurry efferent duct.
7. slurry ground and mixed equipment, is characterized in that, comprises dispersed with stirring device, slurry apparatus for grinding and dispersing as claimed in claim 1 and the circulatory system making size circulations reciprocal be connected between described dispersed with stirring device, slurry apparatus for grinding and dispersing.
8. slurry ground and mixed equipment according to claim 7, it is characterized in that, the material efferent duct of described dispersed with stirring device is connected to the stream of slurry entrance of slurry apparatus for grinding and dispersing, and the slurry efferent duct of described slurry apparatus for grinding and dispersing is connected to the stream of slurry entrance of dispersed with stirring device.
9. a method for the mixing dispersed paste of slurry ground and mixed equipment according to claim 7, it comprises the steps:
1) first powder and dispersant are added in dispersed with stirring device and tentatively mix, being formed can the slurry of continuous-flow;
2) while maintenance dispersed with stirring device runs continuously, by above-mentioned slurry transferring to apparatus for grinding and dispersing, fine gtinding is carried out to slurry by the circulatory system;
3) slurry flows back in dispersed with stirring device again and continues dispersed with stirring after fine gtinding;
4) circulatory system ensures that slurry circulates between dispersed with stirring device and apparatus for grinding and dispersing with certain flow, until the density of slurry parameter, viscosity, domain size distribution reach examination criteria.
10. method according to claim 9, is characterized in that, in step (2), the mode of the grinding of slurry turnover apparatus for grinding and dispersing has two kinds:
Mode A, filter screen is arranged on mill basket, under upper import and export, the direction of rotation of mill basket makes convolution cutter have downward active force to slurry, slurry enters from the below of apparatus for grinding and dispersing or bottom, through the slurry of mill basket grinding, after filter screen filtration, flow out from the enterprising outlet of apparatus for grinding and dispersing;
Mode B, filter screen is arranged under mill basket, on lower import and export, the direction of rotation of mill basket makes convolution cutter have active force upwards to slurry, slurry enters from the top of apparatus for grinding and dispersing or top, through the slurry of the grinding of mill basket, after strainer filtering, flow out from the lower import and export of apparatus for grinding and dispersing.
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