JP4669253B2 - Processing apparatus and powder processing method - Google Patents

Description

  The present invention relates to an apparatus for performing processing such as mixing and drying of processed materials such as powder, and in particular, a rotary shaft provided with a plurality of stirring members on the outer peripheral portion, and an inner portion positioned with a minute gap with respect to the stirring members. The present invention relates to a processing apparatus that includes a casing having a peripheral portion and that stirs a processed product in the casing by the stirring member that moves as the rotating shaft rotates, and a powder processing method using the processing apparatus.

  As a device for mixing and drying processed materials such as powder, the powder in the casing is dispersed and stirred by rotating the rotary shaft provided with a stirring blade, which is a kind of stirring member, inside the casing. Structural devices are widely used.

  Such a rotary blade-type device in which the stirring member rotates is advantageous in that continuous processing is possible as compared with devices having other structures such as a device for stirring powder by rotating the casing.

  In order to increase the agitation effect, the rotary blade type device is devised variously in the shape and arrangement of the agitation blades. For example, the agitation is performed horizontally or inclined with respect to the axial direction on a short boss in the rotational axis direction. By arranging a plurality of blades with blades in the direction of the rotation axis, the shape and angle of the stirring blades can be varied (see, for example, Patent Document 1 and Patent Document 2), or the direction in which adjacent stirring blades intersect is set. By doing so, there are those aimed at improving the stirring effect (for example, see Patent Document 3 and Patent Document 4).

Japanese Patent Publication No.42-5302 Japanese Patent Publication No. 51-39383 JP 2002-301349 A JP 2002-318072 A

  In recent years, finer powders have been developed, and there is a desire to sometimes precisely mix and disperse nanometer-sized powders. However, the finer the powder, the stronger the agglomeration, and the above-described apparatus could not sufficiently agglomerate and perform fine dispersion and mixing.

  In addition, if it is an apparatus that can give a powerful force to the powder, it can be considered to satisfy not only mixing and drying processes but also other functions such as crushing, crushing, spheroidizing, and compositing of the powder. However, the apparatus as described above cannot apply such a force to the powder.

The present invention has been made in view of the above circumstances, and a first object is to provide an agitation effect by applying unprecedented strong force to a processed material such as powder while taking advantage of a rotary blade type device. In addition to mixing and drying processes, various processes such as crushing, crushing, compositing (combining), surface modification, smoothing, shape control (spheroidizing, etc.) It is to provide a processing apparatus capable of achieving the above.
A second object is to provide a powder processing method capable of efficiently and satisfactorily performing various types of processing on powder using the above processing apparatus.

In view of the above problems, the present inventors have completed the following invention.
First aspect of the apparatus for realizing the first object is used, the number a rotating shaft provided with a plurality of agitating members on the outer peripheral portion, the inner peripheral portion positioned at intervals gap with respect to the agitating member and a casing was, the processing of the casing by the stirring member to be moved with the rotation of the rotating shaft to a processing device for stirring treatment, its characteristic configuration, the axial direction parallel to the previous SL rotation axis in the ends of a plurality of agitating members each is located inside the end portion of the other agitating member adjacent at intervals in the circumferential direction of the rotary shaft, successively in the entire circumference in the circumferential direction of the rotary shaft One of the adjacent stirring members is a feeding stirring member that feeds a processed material in one axial direction of the rotating shaft with the rotation of the rotating shaft, and the other is a processed material with the rotation of the rotating shaft. to point Ru stirring member der for returning back in the other direction of the axial direction of the rotary shaft That.

By maintaining such a positional relationship of the agitating members, the processed material in the casing agitated by each agitating member is moved from the end of the agitating member in the direction parallel to the axial direction of the rotating shaft in the circumferential direction of the rotating shaft. By entering deeply inside the other stirring members adjacent to each other at an interval , in addition, one of the adjacent stirring members is sequentially configured for feeding and the other for returning in the entire circumference in the circumferential direction of the rotation shaft. The object receives alternately the force sent in one axial direction of the rotating shaft and the force returning in the other axial direction of the rotating shaft, and the processing in the casing is compared to the case of continuously receiving the force in the same direction. The moving path of the object becomes more complicated and long, and as a result, the force of the stirring member can be transmitted strongly to the processed object.
Accordingly, there is provided a processing apparatus capable of enhancing the stirring effect by applying an unprecedented strong force to the processed material such as powder while taking advantage of the rotary blade type apparatus.

The second invention is that, in the first invention, the diameter of the inner peripheral portion of the casing is not more than twice the diameter of the outer peripheral portion of the rotating shaft.
When the relationship between the diameters of the inner peripheral portion of the casing and the outer peripheral portion of the rotating shaft is restricted in this way, the space where the force acts on the processed material in the casing is limited, and as a result, the force of the stirring member is strongly transmitted to the processed material. it is possible.

The third invention, in the first or second invention, the agitating member located axial end of said rotary shaft, a stirring member for feeding to send the axial direction of the workpiece from one end to the other, wherein the agitating member positioned in the axial direction of the other end of the rotary shaft, a point Ru stirring member der for returning back the processed product to the one end from the other end of the axial direction.
By arranging the stirring members for feeding and returning at both ends of the rotating shaft in this way, the movement of the processed material to the both ends of the rotating shaft, which is difficult for the stirring member to act, is suppressed. Generation | occurrence | production of the processed material discharged | emitted without receiving an effect | action can be prevented.

According to the fourth invention, in any one of the first to third inventions, the diameter of the inner peripheral portion of the casing increases along the circumferential direction of the rotating shaft when viewed from the axial direction of the rotating shaft. The number of the stirring members arranged is increased.
Thus, by increasing the number of stirring members arranged along the circumferential direction when viewed from the axial direction of the rotating shaft as the diameter of the inner peripheral portion of the casing increases, for example, the amount of processed material in the casing is increased. Therefore, while increasing the diameter of the casing inner peripheral portion, the rotating shaft is set so that the moving speed of the stirring member that moves opposite the casing inner peripheral portion is the same as that when the diameter of the casing inner peripheral portion is reduced. Even when the rotation speed is reduced, it is possible to equalize the time interval for each stirring member to pass through each location in the casing so as not to cause insufficient processing for the processed material.

The fifth invention is that in any one of the first to fourth inventions, a diffusing member is provided on an end surface portion of the rotating shaft.
By providing a diffusion member at the end surface portion of the rotating shaft in this way, centrifugal force is generated by the diffusion member on the processed material that tends to enter the gap between the end surface portion and the casing, where the action of the stirring member is difficult to be achieved. It is possible to suppress the movement of the processed material to the end surface portion, and as a result, it is possible to prevent the generated processed material from being discharged without being subjected to the stirring action.

The sixth invention is that, in any one of the first to fifth inventions, the stirring member is formed in a plate shape.
By making the shape of the stirring member plate-like, the entire rotating shaft including the stirring member can be reduced in weight compared to the block-shaped stirring member, so it is possible to design a rotating shaft that rotates at a higher speed. As a result, the force of the stirring member can be transmitted to the processed material more strongly.

In the seventh invention, in any one of the first to sixth inventions, the tip portion of the stirring member facing the inner peripheral portion of the casing has an acute-angle shape in a sectional view when viewed from the axial direction of the rotating shaft. And the center line of the tip acute angle portion is disposed in a state inclined from the direction perpendicular to the inner peripheral surface of the casing.
Due to the shape and arrangement of the tip portion of such a stirring member, for example, when the processed material has a low melting point such as an organic material and is easily welded, the center line is larger than a right angle with respect to the casing inner periphery on the front side in the traveling direction. By rotating the rotating shaft in the direction of the angle, avoid the state where the processed material is sandwiched between the tip part of the stirring member and the inner peripheral part of the casing and the shearing force is applied, and as much as possible to the material that is easy to weld as a shearing force does not act it is possible to prevent the occurrence of welding, whereas, for example, when the high melting point greater processing of rigidity, such as inorganic materials, in the center line in the traveling direction front side casing periphery By rotating the rotary shaft in a direction that is smaller than a right angle to the right angle, the material is sandwiched between the tip portion of the agitating member and the inner peripheral portion of the casing, and a shearing force is applied to process the material with a strong force. Can Kill.

The eighth invention is that in any one of the first to seventh inventions, a member constituting the casing is provided with a cooling or heating medium flow path.
By flowing a cooling medium through the flow path provided in such a casing component member, the processed material in the casing is cooled through the casing member. For example, when processing a processed material having a low melting point and easily welded, The temperature rise of the processed material is suppressed, and the occurrence of welding can be effectively prevented. On the other hand, by flowing a heating medium through the flow path, the processed material in the casing is heated through the casing member. For example, in order to promote processing such as compositing and drying in the processed material and various reactions, the processing is performed. The treatment can be performed with the temperature of the object raised.

The ninth invention is that, in any one of the first to eighth inventions, the member constituting the rotating shaft includes a flow path for a cooling or heating medium.
When the processing medium in the casing is cooled through the rotating shaft constituent member by flowing the cooling medium through the flow path provided in such a rotating shaft constituent member, for example, when processing a processing object having a low melting point and easily welded , The temperature rise of the processed product is suppressed, and the occurrence of welding can be effectively prevented. On the other hand, by flowing a heating medium in the flow path, since the processing of the casing is heated through the rotation shaft constituent members, for example, compounding the treated product order to accelerate the processing and various reactions such as drying, The treatment can be performed in a state where the temperature of the treatment object is increased.
In addition, although the said 8th invention and 9th invention can also each be implemented independently, by implementing both invention simultaneously, the processed material in a casing is reliably cooled or heated from both an internal side and an external side. be able to.

The tenth aspect of the present invention is that in any one of the first to ninth aspects, an atmosphere adjusting means for adjusting the atmosphere of the processing space in the casing is provided.
By the atmosphere adjusting means, processing can be performed in a state where the processing space in the casing is adjusted to a desired atmosphere. The atmosphere adjusting means includes, for example, a means for supplying an inert gas such as nitrogen gas to the processing space in order to prevent oxidation of the processed material, a means for supplying a reactive gas such as oxygen, and a water vapor whose humidity is adjusted. It is comprised by the means to supply, the pressure reduction means for raising the vacuum degree of processing space, etc.
Therefore, it is possible to obtain a processing apparatus capable of adjusting the atmosphere in the processing space in accordance with the type and state of the processing object, the purpose of processing, and the like.

The eleventh invention is the bottomed cylinder according to any one of the first to tenth inventions, wherein the rotating shaft is supported only at one end side in the axial direction and the casing is opened only at one end side in the axial direction of the rotating shaft. And is configured to be movable along an axial direction of the rotating shaft between an operating position that covers the processing space between the rotating shaft and a non-operating position that does not cover the processing space. .
With the above structure, the casing covers the processing space by moving the bottomed cylindrical casing from the end side where the rotating shaft is not supported to the operating position along the axial direction of the rotating shaft with the opening end side in front. The processed product in the casing can be processed in a state where the casing is in the state where the bottomed cylindrical casing is moved from the operating position to the non-operating position so that the casing does not cover the processing space. Inspection, cleaning, etc. can be performed easily.
Therefore, while simplifying the support of the rotating shaft as a one-side support, the casing moving structure can also facilitate cleaning and the like, and an apparatus configuration particularly suitable for a small processing apparatus can be realized.

In the twelfth invention according to any one of the first to eleventh inventions, the rotating shaft is supported at both ends in the axial direction, the casing is formed so as to be divided into a plurality of parts, and between the rotating shaft and the rotating shaft. It is the point which is comprised so that a change to the operation state which covers process space and the non-operation state which does not cover the process space is possible.
In the above configuration, the division form of the casing formed to be separable can be changed to an operating state that covers the processing space between the rotating shafts, and the processed material in the casing can be processed. It is possible to easily inspect, clean, etc. the inside of the processing apparatus by changing the position of the divided form of the casing to a non-operating state that does not cover the processing space.
Therefore, while supporting the large and heavy rotating shaft with a large load at the time of rotation by supporting both sides surely and ensuring the ease of cleaning etc. by the divided structure of the casing, an apparatus configuration particularly suitable for a large processing apparatus is provided. realizable.

The first invention of the powder processing method for realizing the second object uses any one of the first to twelfth inventions of the processing apparatus to mix the powder particles as a processed product in units of particles. The point is that precision mixing is performed.
Since the processing apparatus according to the present invention has a strong stirring effect on the powder, it is efficient to perform a precision mixing process in which the powder particles in an agglomerated state are dispersed in units of particles and the powder particles are mixed in units of particles. Can be done well.

The second invention uses any one of the first to twelfth inventions of the processing apparatus, and combines the powder particles as the processed product with particles having the same diameter or larger diameter. The point is to do.
Since the processing apparatus according to the present invention has a strong stirring effect on the powder, the powder particles in an agglomerated state are well dispersed, and the dispersed powder particles It is possible to efficiently and satisfactorily perform the fusing process for binding to particles having a larger diameter.
The fusion process is a fine powder fusion process when, for example, fine particles are bonded to particles having a larger diameter.

The third invention is that, using any one of the first to twelfth inventions of the processing apparatus, a surface modification treatment is performed in which a modifying agent is bonded to the surface of the powder particles as a treated product.
Since the treatment apparatus according to the present invention has a strong stirring effect on the powder, the agglomerated particles and the modifier in the powder are well dispersed and dispersed on the surface of the dispersed powder particles. The surface modification treatment for bonding the modifier can be performed efficiently and satisfactorily.

The fourth invention resides in that a smoothing process for smoothing the surface of the powder particles as a processed product is performed using any one of the first to twelfth inventions of the processing apparatus.
Since the processing apparatus according to the present invention has a strong stirring effect on the powder, the surface of the powder particle is given by giving a strong polishing force, frictional force, compressive deformation force, etc. to the surface of the powder particle. Smoothing processing for smoothing can be performed efficiently.

The fifth invention is that a shape control process for changing the shape of powder particles as a processed product is performed using any one of the first to twelfth inventions of the processing apparatus.
Since the processing apparatus according to the present invention has a strong stirring effect on the powder, the shape is changed by giving a strong polishing force, grinding force, compressive deformation force, shearing force, etc. to the powder particles. The shape control process to be performed can be performed efficiently.
The shape control process is, for example, a spheronization process when the irregularly shaped particles in the powder particles are spheroidized, and a flattening process when the powder particles are flattened.

The sixth invention is the powder processing method according to any one of the first to fifth inventions, wherein the input volume of the processed material is set in a range of 5% to 95% with respect to 100% of the internal volume of the processing space in the casing. There is in point to do.
When the input volume of the processed material is less than 5%, the amount of powder occupying the processing space is too small, and the powder hitting the stirring member is likely to escape, so a strong force does not act on the powder particles, Conversely, if the input volume of the processed material exceeds 95%, the amount of powder occupying the processing space becomes too large, and the force acting on each powder particle is uneven because the movement of the powder is suppressed. In any case, the stirring effect may be reduced, but by setting the input volume of the processed material in a range of 5% to 95% with respect to 100% of the internal volume of the processing space in the casing. By applying a strong force uniformly to each powder particle to obtain an effective stirring effect, the powder can be processed satisfactorily.

The seventh invention is that, in the powder processing method of any one of the first to sixth inventions, a gap between the inner peripheral portion of the casing and the stirring member is set in a range of 0.3 mm to 50 mm. .
If the gap between the inner peripheral part of the casing and the stirring member becomes too wide, the powder hitting the stirring member will not be received by the inner peripheral part of the casing and will be easy to escape, so no strong force will act on the powder particles. On the contrary, if the gap is narrow, the powder hitting the stirring member is received by the inner periphery of the casing and is difficult to escape, so a strong force acts on the powder particles, but the gap is too narrow. If a strong force is applied to a processed material having a low melting point such as an organic resin (for example, a thermoplastic resin), there is a risk of welding. Therefore, by setting the gap to a value in the range of 0.3 mm to 50 mm according to the type and characteristics of the processed material, an effective stirring effect can be obtained for various powder particles and the processing can be performed satisfactorily. be able to.

The eighth invention resides in that, in the powder processing method of any one of the first to seventh inventions, the peripheral speed of the stirring member relative to the inner peripheral portion of the casing is changed and set according to the processing object.
That is, when the peripheral speed of the stirring member with respect to the inner peripheral portion of the casing is low, the force acting on the powder particles is weak, and conversely, when the peripheral speed is high, the force acting on the powder particles is strong. Therefore, by setting the peripheral speed to an appropriate value according to the type and characteristics of the powder particles to be processed, it is possible to obtain an effective stirring effect for various powder particles and perform the processing well. Can do. For example, for powder particles having a low melting point such as an organic resin-containing material, the peripheral speed is slowed to prevent the occurrence of welding or the like. In the case of toner particles described later, a low peripheral speed state of, for example, about 10 to 30 m / sec is preferable.

  The ninth invention is the powder processing method of any one of the first to eighth inventions, wherein the powder particles are resin-containing particles, and the tenth invention is that the resin-containing particles are toner particles. There is a point. The toner particles here include intermediate products in the course of the manufacturing process in addition to the toner particles as the final product. Examples of resin-containing particles other than toner particles include powder coating particles.

That is, when the powder particles are resin-containing particles, the resin-containing particles that are likely to aggregate can be crushed and dispersed by the precision mixing process, and can be precisely mixed in units of particles.
Particularly when the resin-containing particles are toner particles, the aggregated toner particles are pulverized and dispersed and mixed in units of particles, whereby toner particles having excellent image characteristics can be efficiently generated.

Moreover, resin-containing particle | grains can be favorably couple | bonded by the said fusion process.
In particular, when the resin-containing particles are toner particles, the toner particles having a predetermined particle size distribution can be obtained by combining the fine particles in the toner particles with particles of an appropriate size without performing the troublesome operation of classifying and removing the fine particles. Can be generated efficiently.

Moreover, the resin-containing particles having desired surface characteristics can be processed by bonding various modifiers to the surface of the resin-containing particles by the surface modification treatment.
In particular, when resin-containing particles are toner particles, toner particles having good fluidity and appropriately charged by bonding a modifier such as a fluidity improver or a charge control agent to the surface of the toner particles. Toner particles can be generated efficiently.

Moreover, the surface of the resin-containing particles can be smoothed for various uses by the smoothing treatment.
In particular, when the resin-containing particles are toner particles, the surface of the toner particles is smooth, so that the image characteristics are excellent, the transfer efficiency is high, and the surface is smooth when accommodated in the developing device. In addition, toner particles with little deformation due to stirring and excellent durability as a developer can be efficiently produced.

Further, the shape control treatment can change the shape of the resin-containing particles for various uses.
In particular, when the resin-containing particles are toner particles, the toner particles having excellent image characteristics can be efficiently generated by spheroidizing the irregularly shaped particles in the toner particles by the spheronization process, or the flattening process. Thus, by flattening the spherical toner particles, toner particles having excellent cleaning properties can be efficiently generated.

  As described above, according to the processing apparatus according to the present invention, it is possible to increase the stirring effect by applying an unprecedented strong force to the processed object. Can be precisely dispersed and mixed, as well as pulverization, pulverization, compositing (combination that combines particles), surface modification, smoothing, shape control (spheroidization, etc.) Processing can be performed efficiently and satisfactorily.

Hereinafter, an embodiment of the processing apparatus of the present invention will be described using a powder processing apparatus as an example.
FIG. 1 shows the configuration of a powder processing apparatus according to the present invention. This apparatus includes a rotating shaft 2 having a plurality of stirring members 3 provided on the outer peripheral portion at the center of a cylindrical casing 1 wrapped in a jacket 4. The casing 1 has an inner peripheral portion that is located with a small gap (clearance) with respect to the stirring member 3, and is configured to stir the processed material in the casing 1 by the stirring member 3 that moves as the rotating shaft 2 rotates. is doing. The rotating shaft 2 is supported on one side by a bearing portion 7 and is connected to a driving portion 8 constituted by a motor or the like. The raw material inlet 5 is provided at the side or upper end of the casing 1, and the product outlet 6 is provided at the lower part of the casing 1 corresponding to the end opposite to the powder inlet 5.

  That is, the rotating shaft 2 is supported only at one end side in the axial direction (left side in FIG. 1), and the casing 1 is opened only at one end side in the axial direction of the rotating shaft 2 (left side in FIG. 1). An operation position (position in FIG. 1) that covers the processing space 9 between the rotating shaft 2 and a non-operation position that does not cover the processing space 9 (not shown). 2) is configured to be movable along the axial direction of the rotary shaft 2.

  The apparatus can be used for continuous processing or batch processing. When used for continuous processing, a quantitative feeder (not shown) may be connected to the raw material inlet 5, and a continuous discharge mechanism (not shown) such as a rotary valve may be provided at the product outlet 6. Good. When this apparatus is used for batch processing, a discharge suppression mechanism (not shown) such as a slide gate valve is provided at the raw material inlet 5 and the product outlet 6. If used only for batch processing, the raw material inlet 5 and product outlet 6 need not be provided at the end of the casing 1.

  In the apparatus of FIG. 1, a jacket 4 is provided so that temperature management such as heating and cooling can be performed. That is, a member constituting the casing 1 includes a jacket 4 that is a flow path for a cooling or heating medium. Incidentally, the inlet and outlet of the cooling or heating medium for the jacket 4 are not shown. If temperature management is not required, the jacket 4 may be omitted. In FIG. 1, the apparatus has a horizontal axis structure in which the rotary shaft 2 is oriented in the horizontal direction. However, a vertical axis structure in which the rotary shaft 2 is oriented in the vertical direction may be used as necessary. Moreover, it can also be set as the diagonal axis | shaft structure which has arrange | positioned the rotating shaft 2 at the diagonal angle as needed.

  Next, the rotating shaft 2 and the stirring member 3 will be described with reference to FIGS. The outer periphery of the rotating shaft 2 is provided with plate-like stirring members 3 a and 3 b at an angle inclined with respect to the axial direction, and the diffusion member 10 is provided on both end surface portions 2 a of the rotating shaft 2.

  As shown in FIG. 2, when the rotary shaft 2 of the present apparatus is viewed from a position orthogonal to the axial direction, for example, the stirring member 3b (2) has an end position in a direction parallel to the axial direction of the rotary shaft 2. It is located inside the other stirring members 3a (1) and 3a (3) with respect to the positions of the end portions of the other adjacent stirring members 3a (1) and 3a (3). In other words, when the extension lines L1 and L3 are drawn in the vertical direction from the end of the stirring member 3b (2), they are in a positional relationship overlapping with a part of the adjacent stirring members 3a (1) and 3a (3). The other stirring members 3a (1), 3a (3), 3b (4), 3a (5), and 3b (6) have the same positional relationship. When the stirring members 3a and 3b are in such a positional relationship, the powder enters deeply into the other stirring members 3a and 3b from the end of the stirring members 3a and 3b, and as a result, the force of the stirring members is reduced. Can be transmitted to powder strongly.

  Further, as shown in FIG. 3, in the present apparatus, the diameter D1 of the inner peripheral portion of the casing 1 is not more than twice the diameter D2 of the outer peripheral portion of the rotating shaft 2. That is, it is expressed by a relationship of D1 ≦ D2 × 2. FIG. 3 shows an example in which D1 is 1.8 times D2. By making D2 relatively large with respect to D1, the space (processing space) 9 in which the force acts on the powder is limited. As a result, even if the peripheral speed of the same stirring member 3a, 3b is the same, the stirring member 3a, The force of 3b can be transmitted strongly to the powder. When D1 exceeds twice D2, the space 9 on which the force acts on the processed material becomes too large, and the force applied to the powder becomes small.

  At least a part of the plurality of agitating members 3a and 3b is formed on the agitating member 3a for feeding that feeds a processed material in one axial direction of the rotating shaft 2 as the rotating shaft 2 rotates. Another part of the stirring members 3 a and 3 b is formed on a return stirring member 3 b that returns the processed material in the other direction in the axial direction of the rotating shaft 2 as the rotating shaft 2 rotates. This will be specifically described below.

  As shown in FIG. 2, the plate surface of the feeding stirring member 3 a is inclined so as to send the powder in the feeding direction, that is, in one axial direction of the rotating shaft 2 as the rotating shaft 2 rotates. When the raw material inlet 5 and the product outlet 6 are provided at both ends of the casing 1 (in the case of FIG. 1), the direction from the raw material inlet 5 toward the powder outlet 6 (right direction in FIG. 2) This is called the feed direction. On the other hand, the plate surface of the return stirring member 3b is inclined so as to return the powder in the return direction, that is, in the direction opposite to the feed direction in the axial direction of the rotary shaft 2 as the rotary shaft 2 rotates. When the raw material inlet 5 and the product outlet 6 are provided at both ends of the casing 1 (in the case of FIG. 1), the direction from the product outlet 6 toward the raw material inlet 5 (left direction in FIG. 2) is returned. It is called direction. The inclination angle of the stirring members 3a and 3b is preferably set in a range of ± 5 to ± 85 degrees with respect to the axial direction of the rotary shaft 2.

  The stirring members 3a and 3b are a set of a plurality of members disposed at intervals in the circumferential direction of the rotating shaft 2. By the way, (1), (2), (3), etc. attached after 3a, 3b distinguish each set of stirring members 3a, 3b. In FIG. 2, the stirring members 3a and 3b in the same group are inclined with respect to the rotating shaft 2 so as to guide the powder in the same direction, that is, in either the feed direction or the return direction. Is not to be done. In FIG. 2, the stirring members 3a and 3b form a pair of two members on the rotating shaft 2 at intervals of 180 degrees, but three members at intervals of 120 degrees or four at intervals of 90 degrees. It is good also as a set of many members, such as a sheet.

  One of the stirring members 3a and 3b adjacent in the circumferential direction of the rotating shaft 2 is formed on the feeding stirring member 3a, and the other 3b is formed on the returning stirring member 3b. Specifically, as shown in FIG. 3, one of the stirring members 3a (5) and 3b (6) adjacent in the circumferential direction of the rotating shaft 2 is formed on the feeding stirring member 3a, and the other 3b (6) is formed in the return stirring member 3b. It is desirable that each set of the agitating members 3a and 3b is provided with a certain angle shifted from the other agitating members 3a and 3b adjacent in the axial direction of the rotating shaft 2 when viewed from the rotating axis direction. In FIG. 3, the angle is shifted by 90 degrees, but the angle is not limited to this.

In FIG. 2, the stirring member 3 a for feeding and the stirring member 3 b for returning are alternately provided in the axial direction of the rotating shaft 2, and a total of six sets are provided. In this case, the powder is “feed → return → feed → The force of “return → feed → return” is alternately received, and the movement path of the powder in the casing becomes complicated and long as compared with the case where only the force in one direction is received. As a result, the powder is mixed with the stirring member 3a, The force of 3b will be received more strongly.
The combination of the stirring members 3a and 3b is not limited to this, and can be freely changed as necessary. In FIG. 4, the feed stirring member 3 a and the return stirring member 3 b sandwich the feed neutral stirring member 3 c (3) between each pair, and the arrangement thereof is also “feed → return → neutral → feed → return”. This is different from FIG. Further, in FIG. 5, three sets of feed stirring members 3a and two sets of return stirring members 3b are provided, and the arrangement thereof is “feed → feed → return → feed → return”.

  2, 4 and 5, the feed stirring member 3a (1), 3a (2), 3a (3), 3a (4), 3a (5), or the return stirring member 3b (2). , 3b (3), 3b (4), 3b (5), 3b (6) have the same inclination angle, but the present invention is not limited to this, and the inclination angles of the stirring members 3a, 3b are all the same. It is also possible to make them different, or to change the inclination angle by a part.

If the stirring members 3a and 3b are designed in a hub shape as shown in FIG. 6 and arranged in the axial direction of the rotary shaft 2, it is easy to change the combination of feed and return.
The shape of the stirring members 3a and 3b is formed in a plate shape. By making the shape of the stirring members 3a and 3b into a plate shape, the entire rotating shaft 2 can be reduced in weight compared to the block-shaped stirring member, so that the rotating shaft 2 rotating at a higher speed can be designed. As a result, the force of the stirring members 3a and 3b can be transmitted to the powder more strongly.
The plate shape is sufficient if at least the portion of the stirring members 3a and 3b close to the inner peripheral portion of the casing 1 has a plate shape, and the rotary shaft 2 and the stirring members 3a and 3b are joined by a bar-shaped arm or the like. It doesn't matter.
In FIG. 6, the stirring members 3 a and 3 b are plate-like members curved with respect to the axial direction of the rotating shaft 2, but they may be provided linearly.

  It is desirable to keep the gap (clearance) between the inner peripheral portion of the casing 1 and the stirring member 3 constant and minute. The reason why the clearance is kept constant is to apply force uniformly to the powder, and the reason why the clearance is kept small is to give a stronger force by reducing the escape space of the powder. When a simple rectangular plate-like member is provided as the agitating members 3a and 3b as viewed from the direction intersecting the axial direction on the rotary shaft 2, the central part of the plate-like member and the inside of the casing 1 are compared with both ends of the plate-like member. Since the clearance with the peripheral part spreads, it is desirable to consider the shape of the stirring member 3a, 3b on the inner peripheral part side of the casing 1 so as to keep the clearance constant.

  However, the clearance between the inner peripheral portion of the casing 1 and the set of stirring members 3 and the clearance between the inner peripheral portion and the other set of stirring members 3 do not have to be the same. For example, in FIG. 2, the clearance of the agitating member 3 a (1) on the feed proximal side near the raw material inlet 5 is made wider than the clearance of the agitating member 3 a (5) on the feed end side near the product outlet 6. It doesn't matter. The clearance width is 0.05 to 7.5% of the diameter D1 of the inner peripheral portion of the casing, and preferably 0.75 to 3%. If it exceeds 7.5%, the powder escape area becomes large and a strong force cannot be applied. If the clearance is 0.05% or less, the stirring members 3a and 3b and the casing 1 may come into contact with each other due to vibrations generated during operation. In terms of specific numerical values, it is desirable to set the gap between the inner peripheral portion of the casing 1 and the stirring members 3a and 3b within a range of 0.3 mm to 50 mm.

  Further, the input volume of the processed product with respect to 100% of the internal volume of the processing space 9 in the space casing 1 is set to a lower limit value of 5% to an upper limit value of 95 so that the processed product can receive an effective stirring action in the casing 1. It is desirable to set in the range of%. Here, the internal volume of the processing space 9 in the casing 1 is a space obtained by subtracting the volume occupied by the rotating shaft 2 from the internal volume of the casing 1 itself (substantial space in which the processed material can move around in the casing 1). Means volume.

  In this apparatus, a feed stirring member 3a and a return stirring member 3b are provided, but if necessary, a member perpendicular to the axial direction of the rotating shaft 2 or the axial direction of the rotating shaft 2 as shown in FIG. Alternatively, a horizontal stirring member 3c may be provided. An example of the rotating shaft 2 provided with such a feed neutral stirring member 3c is shown in FIG. The position on the rotary shaft 2 where the vertical stirring member or the horizontal stirring member 3c is attached is not particularly limited as long as it is not at both ends of the rotary shaft 2.

Both end portions of the rotating shaft 2 are portions where the action of the stirring members 3a and 3b is difficult to reach. Therefore, by providing a stirring member 3a for feeding at one end of the rotating shaft 2 and a stirring member 3b for returning at the other end, the movement of the powder toward both ends of the rotating shaft 2 is suppressed, As a result, it is possible to prevent generation of powder that is discharged without receiving a strong stirring action by the stirring member 3.
That is, the stirring member 3a (1) positioned at one end (the left end in FIGS. 2, 4 and 5) of the rotating shaft 2 is moved from one end to the other end (FIGS. 2, 4, and 5). Agitating member 3b (5), which is formed on the agitating member 3a for sending the processed material to the right end of 5 and located at the other axial end of the rotating shaft 2 (the right end in FIGS. 2, 4, and 5). 3b (6) is formed in the return stirring member 3b for returning the processed material from the other end in the axial direction to the other end.

  Although omitted in the above description, the stirring members 3a and 3b shown in FIGS. 1 to 7 are actually the tip portions of the stirring members 3a and 3b facing the inner peripheral portion of the casing 1, as shown in FIG. Is formed in an acute angle shape when viewed from the axial direction of the rotating shaft 2, and the center line L of the tip acute angle portion is inclined from the direction perpendicular to the inner peripheral surface of the casing 1. Has been placed. Specifically, FIG. 8 shows that the angle formed by the left and right oblique sides S1 and S1 forming the sharp tip portion is about 60 degrees, and one of the oblique sides S1 and S1 is perpendicular to the inner peripheral surface of the casing 1. The center line L is in a state inclined about 30 degrees from the direction perpendicular to the inner peripheral surface of the casing 1. Note that the angle of the sharp tip portion is not limited to 60 degrees, and can be set to an arbitrary angle smaller than 60 degrees from an angle close to 90 degrees. However, considering the wear of the tip portion, a very small angle is not preferable. Also, the inclination angle of the center line L can be set to an appropriate value.

  And in the processing apparatus of this embodiment, the said rotating shaft 2 is rotated in the direction (direction of the arrow of FIG. 8) in which the said centerline L becomes an angle larger than a right angle with respect to the casing inner peripheral part of the advancing direction front side. Therefore, when processing resin materials that are easily welded, avoid the state in which shearing force is applied by sandwiching the processed material between the tip portions of the stirring members 3a and 3b and the inner peripheral portion of the casing. It is preventing. In addition, for example, when processing a strong force on a processed material having a high melting point and high rigidity such as an inorganic material, the rotating shaft 2 is rotated in a direction opposite to the arrow in FIG. A processed product can be sandwiched between the tip portions of the agitating members 3a and 3b and the inner peripheral portion of the casing and pressed against the inner peripheral portion of the casing so that a shearing force can be applied.

Diffusion members 10 are provided on both end surface portions 2 a of the rotating shaft 2. When the diffusing member 10 moves with the rotation of the rotary shaft 2, the diffusing member 10 generates a centrifugal force by the diffusing member 10 on the powder that tends to enter the both end surface portions 2a side where the action of the stirring member 3 is difficult. The movement of the powder toward the surface portion 2a is suppressed, and as a result, it is possible to prevent the generation of the powder that is discharged without receiving a strong stirring action by the stirring member 3.
As shown in FIG. 3, the diffusing member 10 is composed of two plate-like members extending in the opposite direction from the center of the rotating shaft 2 at each end surface portion 2a. In addition, as shown by a solid line and a broken line, the stirring members 10 of the both end surface portions 2a are arranged in a state of being shifted from each other by 90 degrees as viewed in the axial direction of the rotary shaft 2. However, the shape is not limited to this, and other shapes, angles, and numbers may be used as long as centrifugal force can be generated, and the center of the rotating shaft 2 is crossed when viewed from the axial direction of the rotating shaft 2. The diffusion member may be provided in the form. Further, the diffusing member 10 may be provided only on one end surface portion 2a of the rotating shaft 2, but it is desirable to provide the diffusing member 10 on both end surface portions 2a.

  The peripheral speed of the stirring member 3 of this apparatus is 5 m / sec to 200 m / sec. When the peripheral speed of the stirring member 3 is slower than 5 m / sec, sufficient force cannot be applied to the powder. When the peripheral speed of the stirring member 3 exceeds 200 m / sec, it becomes difficult to design the bearing structure.

Next, other examples of the processing apparatus according to the present invention are shown in FIGS.
The apparatus shown in FIGS. 9 and 10 has a paddle structure in which the rotating shaft 2 is supported only on one side as in the apparatus of FIG. 1, but the diameter of the cylindrical casing 1 is formed larger than that of the apparatus of FIG. Yes. Further, in order to facilitate the operation of setting the cylindrical casing 1 at the operating position, the two guide rods 12 provided on the apparatus main body side are supported through the guide holes of the bosses 13 provided on the upper outer periphery of the casing. Thus, the casing 1 can be inserted along the axial direction of the rotary shaft 2. Furthermore, in order to cool or heat the casing 1 by the jacket 4 and to cool or heat the rotating shaft 2, a member constituting the rotating shaft 2 includes a cooling or heating medium flow path 11. Specifically, a cavity is formed along the inner central axis direction of the rotating shaft member, and cold water is supplied to the cavity from a main body side that supports the rotating shaft 2, and water flowing through the cavity ( Cooling water for cooling or warm water for heating) is collected and circulated on the main body side. In FIG. 9, the raw material inlet 5 and the product outlet 6 are provided at both end positions in the axial direction of the casing 1, but may be provided at the upper part and the lower part of the central position in the axial direction.

  The stirring member 3 has a paddle structure in which the tip blade portion is coupled to the rotating shaft 2 with a rod-shaped arm, and along the axial direction of the rotating shaft 2, three sets of feed stirring members 3a and three sets of return stirring members 3b is provided in an array of “feed → return → feed → return → feed → return”. And the number of the stirring members 3 arranged in the circumferential direction of the rotating shaft 2 is increased so that the stirring action by the stirring member 3 does not decrease in response to the increase in the diameter of the casing 1. That is, as the diameter of the inner peripheral portion of the casing 1 increases, the number of the agitating members 3 arranged along the circumferential direction of the rotating shaft 2 is increased when viewed from the axial direction of the rotating shaft 2. Yes. Specifically, four stirring members 3a and 3b in each group are arranged at intervals of 90 degrees. Accordingly, when viewed from the axial direction of the rotary shaft 2, four feed stirring members 3a and four return stirring members 3b are arranged at intervals of 90 degrees in the apparatus of FIG. 1 (see FIG. 3). As shown in FIG. 10, eight are arranged at intervals of 45 degrees.

  Furthermore, in the apparatus shown in FIG. 9 and FIG. 10, the stirrer 10 provided on both end surfaces 2a of the rotating shaft 2 is supplemented by the fact that the base end portions of the stirrers 3a and 3b are only arms and there is no stirring force. It extends beyond the position of the outer periphery of the rotating shaft 2 to a length that reaches the tip blades of the stirring members 3a and 3b. The diffusing member 10 is composed of four plate-like members that extend radially from the central portion of the rotating shaft 2 at each end surface portion 2a.

  Further, the processing apparatus shown in FIGS. 9 and 10 includes an atmosphere adjusting means 20 for adjusting the atmosphere of the processing space 9 in the casing 1. Specifically, as shown in the enlarged view of part A in FIG. 9, a flow path 14a is formed in the shaft cover 14 disposed so as to seal the root side of the rotating shaft 2 with the sealing material 17, and the flow The path 14 a communicates with the processing space 9 through a region C sandwiched between the shaft cover 14 and the outer peripheral surface of the rotary shaft 2. For example, an inert gas such as nitrogen gas can be flowed into the processing space 9 from the outside through the flow path 14a in order to prevent oxidation of the processed material, and a reactive gas such as oxygen or air (Air). Can be supplied to the processing space 9, and water vapor whose humidity has been adjusted to bring the processing space 9 into a humidified state can be supplied. Alternatively, for the purpose of drying or the like, a vacuum pump (not shown) may be connected to the flow path 14a to depressurize the processing space 9 to increase the degree of vacuum in the processing space 9. The processing space 9 communicates with the outside air by connecting an exhaust pipe 15 and a filter 16 in order to exhaust the gas supplied from the outside and reduce the pressure rise while maintaining airtightness. As described above, the atmosphere adjusting means 20 is constituted by the flow path 14a, the region C and the like. In addition, the processing space 9 is set to a high degree of vacuum, and, for example, a discharge is generated by an electrode or the like provided on the inner peripheral portion of the casing 1, so that the surface of the processing object is activated with plasma discharge energy. It is also possible to perform MCB (mechanochemical bonding) treatment more effectively.

  The apparatus shown in FIGS. 11 and 12 is formed such that the diameter of the cylindrical casing 1 is larger than that of the apparatus of FIG. 1 and 9, the rotary shaft 2 is supported at both ends in the axial direction, and the casing 1 is formed so as to be divided into a plurality of parts to cover the processing space 9 between the rotary shaft 2. It is configured to be changeable between an operating state and a non-operating state that does not cover the processing space 9. Specifically, the cylindrical casing 1 can be divided into two parts, an upper removable semi-cylindrical part and a lower fixed semi-cylindrical part as seen from the axial direction of the rotary shaft 2. . The upper semi-cylindrical portion is moved by, for example, a hanging movement using a crane or the like, or a turning operation with the left or right end as viewed in the axial direction as a fulcrum. However, the division form of the casing 1 is not limited to the upper and lower divisions. Moreover, in order to cool or heat the rotating shaft 2, the member which comprises the rotating shaft 2 is provided with the flow path 11 of the medium for cooling or heating similarly to the apparatus of FIG. 9 (refer FIG. 12).

The stirring member 3 has a structure in which the tip blade portion is coupled to the rotating shaft 2 by a rod-like arm in the same manner as the apparatus of FIG. 9, and along the axial direction of the rotating shaft 2, seven sets of the feeding stirring members 3 a and 7 A pair of return stirring members 3b are alternately arranged in an array of “feed → return → feed → (omitted) → return → feed → return”. And the number of the stirring members 3 arrange | positioned in the circumferential direction of the rotating shaft 2 is further increased corresponding to the diameter of the casing 1 becoming large. Specifically, eight sets of stirring members 3a and 3b are arranged at intervals of 45 degrees. Accordingly, when viewed from the axial direction of the rotary shaft 2, 16 feed stirring members 3a and 16 return stirring members 3b are arranged at intervals of 22.5 degrees.
Further, as with the apparatus shown in FIG. 9, four sheets are formed on both end surface portions 2a of the rotating shaft 2 so as to extend radially from the central portion of the rotating shaft 2 to reach the tip blade portions of the stirring members 3a and 3b. The stirring member 10 comprised with the plate-shaped member of is provided.

Next, embodiments of the powder processing method according to the present invention will be described together with examples.
In the present embodiment, using the above-described processing apparatus, for various powders as processed products, the following fine mixing processing, fine powder fusion processing as fusing processing, surface modification processing, smoothing processing, A spheroidizing process is performed as a shape control process. That is, the precision mixing process is a process in which powder particles are mixed in units of particles, a fine powder fusion process, a process in which fine powder particles in the powder are bonded to particles having a larger diameter, and a surface modification process. The process of bonding the modifier to the surface of the powder particles, the smoothing process is a process of smoothing the surface of the powder particles, and the spheronization process spheroidally deformed particles in the powder It is processing. FIG. 13 shows a model diagram of the above-described processing contents. In FIG. 13, the fusion process and the surface modification process are represented by a composite process.

  The mixing speed was compared using the processing apparatus according to the present invention and a conventional paddle type mixer (Turbulizer TCX-8: manufactured by Hosokawa Micron Corporation). In each device, calcium carbonate (white) with an average particle diameter of 5 μm and iron oxide (red) with an average particle diameter of 300 nm at a mixing ratio of 5 wt% are mixed at a peripheral speed of 25 m / sec. (PM-3: manufactured by Minamide System Engineering Co., Ltd.) The paddle type mixer is configured to feed and return the paddle in the same manner as the processing apparatus of the present invention, but the paddle end in the direction parallel to the axial direction when viewed from the direction orthogonal to the rotation axis of the paddle. The position of the part was not inside the position of the other adjacent paddle end part. That is, the adjacent paddle ends are not overlapped. The results are shown in FIG. ○ is the result of the processing apparatus of the present invention, and ■ is the result of the conventional paddle type mixer. Compared with the conventional paddle type mixer, it can be seen that the processing apparatus of the present invention has a high mixing reach and a high mixing speed.

  In each apparatus described in Example 1, silica sand having an average particle size of 28 μm and titanium oxide having an average particle size of 15 nm were combined under a mixing ratio of 10: 1, and the BET specific surface area was set to MACSORB HM model-1201 ( Measured by Mountec Co., Ltd. Compared to silica sand, titanium oxide has a small particle size and a large specific surface area. Therefore, the specific surface area of the mixture of both is large, and the more the composite, the closer to the specific surface area of silica sand. The results are shown in FIG. ○ is the result of the processing apparatus of the present invention, and ■ is the result of the conventional paddle type mixer. It can be seen that the conventional paddle type mixer has hardly been combined, whereas the apparatus of the present invention has been combined.

  Coke spheroidizing treatment with an average particle diameter of 30 μm was performed in each apparatus described in Example 1. FIG. 16 shows a processed product of the apparatus of the present invention, and FIG. 17 shows a processed product of a conventional paddle type mixer. Compared with the conventional paddle type mixer, it can be seen that the processed product of the apparatus according to the present invention is becoming spherical.

  Regarding the processing apparatus according to the present invention, the mechanofusion system AM-15F and cyclomix CLX-50 manufactured by Hosokawa Micron Co., Ltd., using calcium carbonate (white) and iron oxide (red) as in Example 1, a peripheral speed of 20 m / The mixing speed was compared by mixing at sec. The results are shown in FIG. It can be seen that, compared with the mechanofusion system and cyclomix, the present processing apparatus has a high degree of mixing and a high mixing speed.

  In each apparatus described in Example 4, a composite treatment of silica sand having an average particle diameter of 28 μm and titanium oxide having an average particle diameter of 15 nm was performed in the same manner as in Example 2, and the BET specific surface area was measured. The results are shown in FIG. Compared to the mechanofusion system and cyclomix, it can be seen that the processing apparatus according to the present invention is more complex with less energy.

  Using the treatment apparatus of the present invention, a surface modification treatment was performed in which metal oxide fine particles (tungsten oxide fine particles having an average particle size of 50 nm) were coated on the surfaces of metal particles (copper having an average particle size of 30 μm). A photograph of the processed product is shown in FIGS. FIG. 22 is an enlarged view of portion A in FIG. It can be seen from the photograph that a layer of tungsten oxide fine particles is uniformly formed on the surface of the aluminum particles in a short time (3 minutes).

  With the treatment apparatus of the present invention, a surface modification treatment was performed in which the surface of lithium cobalt oxide (average particle size 10 μm) was coated with carbon fine particles (average particle size 50 nm). FIG. 23 shows lithium cobalt oxide particles, and FIG. 24 shows aggregated carbon particles. A photograph of the surface-modified product is shown in FIG. It can be seen that the agglomerated carbon raw material is uniformly coated on the surface of the lithium cobalt oxide particles in a short time (2 minutes) treatment. The carbon-coated lithium cobalt oxide is used as a positive electrode active material for a secondary battery. Although not described in detail, carbon particles obtained by spheroidizing or dispersing carbon raw materials with the processing apparatus of the present invention can be used as the negative electrode active material of the secondary battery.

  The toner particles (jet mill pulverized product containing a large amount of fine powder) were subjected to fine powder fusion treatment and spheroidization treatment by the treatment apparatus of the present invention. A photograph before processing is shown in FIG. 26, a photograph after processing is shown in FIG. 27, and a change in particle size distribution before and after the processing is shown in FIG. It can be seen that spheroidization is progressing in a short time (5 minutes). In addition, as data of circularity (sphericity), data of 0.919 before treatment and 0.935 after treatment (manufactured by Hosokawa Micron Corporation: measured by Hosokawa / Sysmex FPIA-2100) are obtained. Further, from the data of FIG. 28, it is found that the ratio of the number of fine powders of 5.3 μm or less is reduced from 73% to 48%, and fine powder fusion is progressing.

Note that a supplementary description will be given below of how the present processing apparatus is used when the processed material is toner particles.
First, the toner particles may be either one-component (magnetic) toner or two-component (non-magnetic) toner, and the binder resin may be any resin such as styrene acrylic or polyester. Also good. Further, any toner for color (cyan, magenta, yellow, black) or monochrome may be used.

  The difference in the toner particle manufacturing method can be applied to either a pulverized toner prepared by mechanical pulverization or a chemical toner prepared by chemical polymerization or the like. The pulverized toner is usually metered, mixed, kneaded, cooled, coarsely pulverized, pulverized, first classified (removed coarse powder and returned to the pulverization process), and second classified (removed fine powder and returned to the measurement process). ), Which is produced through each process such as external addition, etc., but with this processing apparatus, the fine powder is fused between the first classification process and the second classification process, and the external additive is added in the external addition process. It is possible to perform a surface modification process for bonding to the toner surface, and to perform a shape control process such as spheroidization before or after the external addition process. Chemical toners are usually produced through various processes such as polymerization reaction in a polymerization tank, filter press, drying, classification (if necessary), external addition, etc., as in the case of the above pulverized toner. In addition, it is possible to perform surface control processing with an external additive in the external addition process, and shape control processing such as spheroidization before and after the external addition process.

  The processing apparatus according to the present invention and the powder processing method using the processing apparatus improve the efficiency of mixing, drying, etc. while taking advantage of the processing apparatus that stirs the processed material by the stirring member that moves as the rotating shaft rotates. It also fulfills functions such as crushing, crushing, spheroidizing, and compounding of processed materials, and various materials such as plastics, ceramics, minerals, metals, pigments (dyes), foods, pharmaceuticals, cosmetics, batteries, It can be applied to processing processes for powders in various fields such as paints, electronic parts, and various chemical products, and contributes to the simplification and high efficiency of conventional equipment.

Front sectional drawing which shows the structure of the processing apparatus which concerns on this invention The figure which shows the rotating shaft and stirring member in the processing apparatus of FIG. Side surface sectional drawing which shows the structure of the processing apparatus which concerns on this invention The figure which shows the other example of a rotating shaft and a stirring member The figure which shows the other example of a rotating shaft and a stirring member The figure which showed the stirring member made to incline Figure showing a horizontal stirring member The figure which showed the cross-sectional shape of the front-end | tip part of a stirring member Front sectional view showing another structural example of the processing apparatus of the present invention Side surface sectional drawing of the processing apparatus shown in FIG. Front sectional view showing another structural example of the processing apparatus of the present invention Side surface sectional drawing of the processing apparatus shown in FIG. Explanatory drawing which shows the content of the powder processing method of this invention typically Graph showing the degree of mixing (Example 1) Graph showing BET specific surface area (Example 2) Electron micrograph of a spheroidized product by the processing apparatus of the present invention (Example 3) Electron micrograph of a spheroidized product using a conventional paddle type mixer Graph showing degree of mixing (Example 4) Graph showing BET specific surface area (Example 5) SEM photograph of surface modified particles by treatment apparatus of the present invention (Example 6) TEM photograph of surface modified particles shown in FIG. 20 (Example 6) Partially enlarged TEM photograph of the surface modified particles shown in FIG. 21 (Example 6) SEM photograph of lithium cobaltate particles (Example 7) SEM photograph of carbon fine particles (Example 7) SEM photograph of carbon-coated lithium cobalt oxide particles (Example 7) SEM photograph of toner particles before treatment (Example 8) SEM photograph of toner particles after treatment (Example 8) Graph of particle size distribution of toner particles before and after treatment (Example 8)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Rotating shaft 2a End surface part of rotating shaft 3 Stirring member 3a Feeding stirring member 3b Returning stirring member 3c Horizontal stirring member 4 Jacket (flow path for cooling or heating medium)
DESCRIPTION OF SYMBOLS 5 Raw material inlet 6 Product outlet 7 Bearing part 8 Drive part 9 Processing space 10 Diffusion member 11 Flow path of cooling or heating medium 12 Guide rod 13 Boss 14 Shaft cover 14a Flow path 15 Exhaust pipe 16 Filter 17 Sealing material 20 Atmosphere adjusting means C region L center line L1 vertical extension line L3 vertical extension line D1 diameter of casing inner periphery D2 diameter of outer periphery of rotating shaft S1 hypotenuse S2 hypotenuse

Claims (22)

Comprising a rotating shaft having a plurality of agitating members on the outer peripheral portion, and a casing inner having a peripheral portion located at intervals gap with respect to the agitating member, the agitating member to be moved with the rotation of the rotary shaft the treated product in the casing a processing device for stirring treatment by, in a direction parallel to the axial direction before Symbol rotary shaft, an end portion of said plurality of agitating members each have at intervals in the circumferential direction of the rotary shaft located inside the end of the other agitating member adjacent,
One of the stirring members that are successively adjacent to each other in the circumferential direction of the rotating shaft is a feeding stirring member that sends a processed material in one direction of the axial direction of the rotating shaft along with the rotation of the rotating shaft, and the other There axial agitating member der Ru processor for returning back in the other direction of the rotating shaft with and treated with rotation of the rotary shaft. Diameter of the inner peripheral portion of the front Symbol casing, processing apparatus according to claim 1, wherein more than 2 times the diameter of the outer peripheral portion of the rotary shaft. The agitating member located at one end of the rotating shaft in the axial direction is a stirring member for sending a processed material from one end to the other end in the axial direction , and the agitating member located at the other end in the axial direction of the rotating shaft member, the axial direction of the other end processing apparatus according to claim 1 or 2, wherein Ru stirring member der for returning back the processed product to the one end from. According diameter of the inner peripheral portion of the casing is increased, according to claim 1-3 to increase the number of the agitating member disposed along the circumferential direction of the rotary shaft as viewed in the axial direction of the rotary shaft The processing apparatus of any one. The processing apparatus of any one of Claims 1-4 which has provided the diffusion member in the end surface part of the said rotating shaft. Processing apparatus according to any one of claims 1 to 5, wherein said stirring member is formed in a plate shape. The tip portion of the stirring member facing the inner peripheral portion of the casing is formed in an acute angle shape when viewed from the axial direction of the rotating shaft, and the center line of the tip acute angle portion is the center of the casing. The processing apparatus of any one of Claims 1-6 arrange | positioned in the state inclined from the orthogonal | vertical direction with respect to the internal peripheral surface. The processing apparatus according to any one of claims 1 to 7 , wherein a member constituting the casing includes a flow path for a cooling medium or a heating medium. The processing apparatus according to any one of the members constituting the rotary shaft cooling, wherein comprises a flow path of the heating medium term 1-8. Processing apparatus according to any one of claims 1 to 9, which includes a atmosphere adjustment means for adjusting the atmosphere in the processing space within the casing. The rotating shaft is supported only at one end side in the axial direction, and the casing is formed in a bottomed cylindrical shape that opens only at one end side in the axial direction of the rotating shaft, and covers the processing space between the rotating shaft and the casing. The processing apparatus of any one of Claims 1-10 comprised so that it can move along the axial direction of the said rotating shaft to an operation position and the non-operation position which does not cover the said process space. The rotating shaft is supported at both ends in the axial direction, and the casing is formed so as to be divided into a plurality of parts. The operating state covers the processing space between the rotating shaft and the non-operating state that does not cover the processing space. The processing apparatus of any one of Claims 1-10 comprised so that change is possible. Using the processing device according to any one of claims 1 to 12 powder processing method for performing precise mixing process for mixing the powder particles as treated in grain units. Using the processing device according to any one of claims 1 to 12 flour which the fusion process the diameter and this powder particles as the processing object is to be bound to the same particles or than this diameter larger particles Body treatment method. Using the processing device according to any one of claims 1 to 12 powder processing method for performing a surface modification treatment to bond the modifying agent to the surface of the powder particles as treated. Using the processing device according to any one of claims 1 to 12 powder processing method for performing smoothing processing for smoothing the surface of the powder particles as treated. Using the processing device according to any one of claims 1 to 12 powder processing method for performing shape control process of changing the shape of the powder particles as treated. The powder processing method according to any one of claims 13 to 17 , wherein an input volume of a processed material with respect to 100% of an internal volume of the processing space in the casing is set in a range of 5% to 95%. The powder processing method according to any one of claims 13 to 18 , wherein a gap between an inner peripheral portion of the casing and the stirring member is set in a range of 0.3 mm to 50 mm. The powder processing method according to any one of claims 13 to 19 , wherein a peripheral speed of the stirring member with respect to an inner peripheral portion of the casing is changed and set according to a processing object. The powder processing method according to any one of claims 13 to 20 , wherein the powder particles are resin-containing particles. The powder processing method according to claim 21 , wherein the resin-containing particles are toner particles.