• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The agitator ball mill (10) comprises: an agitating member (22) arranged in a lower region of a fine grinding chamber (14) and having an axis of rotation which is substantially coaxial with a central axis of the fine grinding chamber (14); an annular partition wall (50) arranged to extend upward from a position radially distant from an outer periphery by a given distance so that the interior of the grinding chamber (14) radially into an inner region ( 14a) a fine grinding chamber (14) and an annular outer region (14b) of a fine grinding chamber (14) is divided; a downwardly extending media guide member (31) disposed on a central region of a lower surface of the end plate (12a) and configured to convey a mixture of raw material sludge and pulverizing media (30) through the outer region (14b) of the pulverizing chamber (14) upwardly turning into a downward flow by an action of the agitating member (22) so that the mixture is directed to the inner region (14a) of the grinding chamber (14); a media separating member (32) provided under the media guide member (31); and a product sludge discharge area provided in the media guide component (31), which is in communication with the interior of the media separation component, so that it is possible to discharge a product sludge through the media separation component (32) after the fine grinding medium (30) has been separated to the outside, wherein the agitator ball mill (10) is designed in such a way that by means of control of the fine grinding medium (30) the fine grinding medium (30) between the inner region (14a) of the fine grinding chamber (14) and the outer region (14b) of the fine grinding chamber (14 ) can be circulated to finely grind a raw material in the raw material sludge by circulating the grinding medium (30).
    公开号:CH712819B1
    申请号:CH01587/17
    申请日:2017-04-11
    公开日:2021-11-15
    发明作者:Ishikawa Tsuyoshi；Mitsuhashi Yasuhiro；Tamura Takahiro；Nakajima Tsubasa
    申请人:Ashizawa Finetech Ltd；
    IPC主号:
    专利说明:

    TECHNICAL FIELD
    The invention relates to an agitator ball mill. The agitator ball mill of the present invention is particularly suitable for, but not limited to, mixing raw materials such as ink, paint, pigment, ceramic, metal, inorganic material, dielectric, ferrite, toner, glass, paper coating paint or nanoparticles with grinding media in the form of pearls to grind or dissolve the raw materials into fine particles.
    STATE OF THE ART
    A media agitator mill proposed in JP 2005-199125 A is known as an agitator ball mill.
    The agitator ball mill, which is proposed in JP 2005-199125 A, has: A fine grinding tank with an end plate that closes an upper end of this tank, and within which there is a fine grinding chamber that contains fine grinding material, a rotation axis that rotates in the Fine grinding tank is provided, and a stirring / separating component, which is provided on a part of the axis of rotation within the fine grinding chamber and is designed to rotate with the axis of rotation, are located. This media stirring mill is characterized in that an inner wall surface of the fine grinding chamber and an outer peripheral surface of the stirring / separating component are shaped to match, the media stirring mill further having a separating / draining passage extending from the outer peripheral surface of the stirring / separating component extends to penetrate a central part of the stirring / separating member, and extends therefrom to penetrate a central part of the axis of rotation and communicate with a vicinity of the grinding chamber, and a pressure relief opening which the upper and lower surfaces of the stirring / separating component penetrates in the axial direction of the axis of rotation in order to produce a connection between the upper and lower regions of the interior of the fine grinding chamber.
    However, the powder in the above-mentioned media agitator mill is prone to concentrate at the point of largest diameter where the centrifugal force is strongest, that is, accumulated at a specific position, so that a distribution or grinding force is involved the position changes, and the variation is great. Therefore, there arises a problem that the raw material is not evenly distributed or ground, which leads to difficulties in producing a high quality product.
    Therefore, in Japanese Patent Application No. 2009-103529 (JP 2010-253339 A), the applicant of this application proposes an agitator ball mill which is capable of producing a high quality product by good fine-grinding agitation.
    The agitator ball mill proposed in this application comprises: a fine grinding container with an upright cylindrical fine grinding chamber which contains a grinding medium in the form of pearls; a raw material sludge supply port provided in the pulverizing tank; a stirring member disposed in the lower region of the grinding chamber and having an axis of rotation that is substantially coaxial with the central axis of the grinding chamber; and a media separating member provided in the grinding chamber above the agitating member. This agitator ball mill is characterized in that it further comprises a guide ring which is arranged to radially divide a lower region into an inner region and a circular outer region, the outer region being designed as an upward flow path of a mixture of grinding media and raw material sludge .
    In the agitator ball mill proposed in Japanese Patent Application No. 2009-103529, a guide ring is installed in the pulverizing chamber as mentioned above, whereby a flow of the mixture of pulverizing media and raw material slurry can be formed as a common flow (ie, spiral flow), consisting of a stream moving in the circumferential direction of the fine grinding chamber (ie a primary stream) and a stream which is capable of regularly repeating a movement cycle which, after a movement in a radially outer direction of the fine grinding chamber towards an inner wall of the fine grinding container, moves upward through the upward flow path between the guide ring and the grinding vessel and then moves downward from a central region of the grinding chamber to return to the agitating member through a space on the inside of the annular partition (i.e., a secondary flow). Therefore, even if the volume ratio of the pearls to the pulverizing chamber is small, separation of the pulverizing medium can be suppressed to some extent to achieve improved pulverizing / dispersing efficiency.
    The spiral flow generated by the agitator ball mill proposed in this patent application is, however, unstable due to a weakness and instability of its secondary flow, so that dynamic localization by centrifugal force is likely to occur, which leads to a separation of the fine grinding medium in the spiral flow. Therefore, there is a problem with non-uniform fine grinding and not particularly good energy efficiency.
    Therefore, the applicant of this application proposed in JP 2014-018797 A an agitator ball mill that is able to generate a uniform, stable spiral flow without dynamic localization by the centrifugal force in a mixture of fine grinding media and raw material sludge, without the inequality of a Centrifugal force distribution, which enables it to perform fine grinding / distribution uniformly with good energy efficiency.
    The agitator ball mill proposed in 2014-0187979 A has: a fine grinding container with an upright cylindrical fine grinding chamber which contains a grinding medium in the form of pearls; a raw material sludge supply port provided in the pulverizing tank; a stirring member disposed in the lower region of the grinding chamber and having an axis of rotation that is substantially coaxial with the central axis of the grinding chamber; and a media separating member provided in the grinding chamber above the agitating member. This agitator ball mill is characterized in that it further comprises a guide ring which is arranged so that it radially divides a lower region into an inner region and a circular outer region, wherein a flow of a mixture of raw material sludge and the fine grinding medium is formed as a spiral flow, which is a combination of a primary flow in the circumferential direction of the grinding chamber and a secondary flow which flows by a circular flow with an upward flow and a downward flow, which are respectively formed in the outer region and in the inner region of the lower region of the pulverizing chamber with respect to the guide ring; and a rotational flow suppressing means provided in the fine grinding chamber and configured to suppress the primary flow while the secondary flow is strengthened, thereby stabilizing the spiral flow, the rotary flow suppressing means being cross-shaped and provided inside the guide ring and that with the rotating flow - Suppression means provided guide ring is arranged over the stirring part.
    With regard to the spiral flow from the mixture of raw material sludge and the fine grinding medium in the agitator ball mill mentioned above, it is possible to suppress the primary flow of the spiral flow, ie a rotational flow in the circumferential direction of the fine grinding chamber, and to suppress the secondary flow of the spiral flow (circulating flow around the guide ring) to strengthen. This makes it possible to stabilize the spiral flow and to harmonize the distribution of pulverizing media in the flow to provide a flow that has a highly repeatable shear that is optimal for pulverization / distribution with good energy efficiency.
    CITATIONS LIST
    [Master document]
    Patent Document 1: JP 2005-199125 A Patent Document 2: JP 2010-253339 A Patent Document 3: JP 2014-018797 A
    DISCLOSURE OF THE INVENTION
    [Technical task]
    It is an object of the present invention to provide an agitator ball mill capable of achieving good separation of fine grinding media with a simpler structure than the agitator ball mill proposed in JP 2014-018797 A.
    [Solution of the technical problem]
    The above-mentioned object is achieved by an agitator ball mill of the present invention, which has the following features listed in (1) to (10). (1) An agitator ball mill comprising: a grinding vessel containing an end plate closing an upper end of the grinding vessel and an upright cylindrical grinding chamber containing a grinding medium in the form of pearls; a raw material sludge storage area provided in the pulverizing chamber; a stirring member disposed in a lower region of the grinding chamber and having an axis of rotation that is substantially coaxial with the central axis of the grinding chamber; an annular partition wall arranged to extend upward from a position radially distant from an outer periphery of the agitating member by a given distance so that the interior of the grinding chamber radially into an inner region of a grinding chamber and an annular one dividing an outer region of a grinding chamber; a downwardly extending media guide member disposed on a central portion of a lower surface of the end plate and configured to convey a mixture of raw material slurry and pulverizing media, which is guided upward through the outer region of the pulverizing chamber, into a downward flow by an action of the agitating member turning so that the mixture is directed to the interior region of the grinding chamber; a media partition member provided under the media guide member; and a product sludge discharge area provided in the media guide component, which is connected to the interior of the media separation component, so that it is possible to discharge a product sludge to the outside through the media separation component after the fine grinding medium has been separated, the agitator ball mill being designed in this way is that by controlling the grinding medium, the grinding medium can be circulated between the inner region of the grinding chamber and the outer region of the grinding chamber to finely grind a raw material in the raw material sludge by the circulation of the grinding medium. (2) the agitator ball mill as recited in (1), wherein the agitation member has a hub with a portion that extends into a vicinity of a lower surface of the media guide member so that a gap between an upper surface of the portion of the hub and the lower surface of the media guide member, the media separator member being a gap separator created by the gap. (3) Agitator ball mill, as listed in (2), the media separating component being a sieve separator arranged below the media guide component. (4) Agitator ball mill, as listed in one of (1) to (3), wherein the media guide component is designed as a downwardly tapering truncated cone guide component. (5) The agitator ball mill as recited in any one of (1) to (4), wherein the media guide member has a lower end which penetrates into a space of the inner region of the grinding chamber within the annular partition. (6) Agitator ball mill, as listed in one of (1) to (5), which has means for allowing cooling water to pass through an inside of the media guide component and / or an inside of the annular partition. (7) Agitator ball mill as listed in one of (1) to (6), wherein the annular partition has a height which is 3/5 to 4/5 of the height of the fine grinding chamber. (8) The agitator ball mill as set forth in any one of (1) to (7), wherein the beads of the fine milling medium are 0.2 to 2.0 mm in diameter. (9) The agitator ball mill as recited in any one of (1) to (8), wherein the annular partition is made of a resin material. (10) The agitator ball mill as recited in any one of (1) to (8), wherein the annular partition is made of a ceramic material.
    [Effect of the invention]
    If an agitator ball mill lacks a media guide member of the present invention, a large number of pulverizing media stagnates in an upper region of the pulverizing chamber, making it impossible to sufficiently utilize the capability of the media separating member. In contrast, in the agitator ball mill of the present invention, a media partition member is provided under the media guide member. As a result, the fine grinding media are moved around the media separation component under the media guide component, while they sit on a circular current that is shaped as a strong downward flow through the media guide component, so that the fine grinding media is less likely to move around the media guide component. Collect separating component. This enables sufficient utilization of the capability of the media separating component.
    SHORT DESCRIPTION OF THE FIGURES
    FIG. 1 is a sectional view showing an agitator ball mill according to an embodiment of the present invention. FIG. 2 is a horizontal sectional view of the agitator ball mill shown in FIG. 1, only a pulverizer and an annular partition are shown. FIG. 3 is a sectional view of a modification of the agitator ball mill that includes another embodiment of the media separation member.
    DESCRIPTION OF THE EMBODIMENTS
    With reference to the accompanying drawings, an agitator ball mill of the present invention will be described below based on an embodiment thereof.
    FIG. 1 shows an agitator ball mill 10 according to an embodiment of the present invention. This agitator ball mill 10 has an upright cylindrical grinding vessel 12 containing an end plate 12a closing an upper end thereof. The fine grinding container 12 has a columnar fine grinding chamber 14 inside and is equipped with a raw material sludge supply interface 16 for introducing a raw material in a sludge form into the fine grinding chamber 14.
    In a lower central region of an interior of the fine grinding chamber 14 of the fine grinding container 12, a stirring member 22 is rotatably arranged with an axis of rotation approximately coaxially with the central axis of the fine grinding chamber 14. The agitation member 22 consists of a radial impeller having, for example, a hub 22a and a plurality of vanes 22b attached thereto.
    The hub 22a of the agitator member 22 is attached to an upper end of a rotatable drive shaft 24 which is an agitator member shaft extending axially downward from the upper end, piercing the pulverizer 12. The rotatable shaft 24 has a lower end which is coupled to a drive source via a known drive mechanism (not shown) in such a manner that it rotates in the manner shown in FIG. 1 is driven by the direction shown by the arrows. Preferably, the rotatable drive shaft 24 has a rotatable shaft (an axis of rotation) that is aligned with the central axis of the grinding chamber 14. Furthermore, the rotatable drive shaft 24 is equipped with a shaft seal (e.g. a mechanical seal).
    Instead of the above-mentioned radial impeller, the stirring member 22 can also consist of a diagonal wheel.
    It is well known in the art of agitator ball mills that fine grinding media 30 in the form of pearls (which are shown greatly enlarged in the figures) are stored in the fine grinding container 12. For the fine grinding medium 30, it is possible to use a diameter of 0.2 to 2 mm for the fine grinding medium. A total volume of the fine grinding medium is 30 to 80% of the volume of the fine grinding chamber.
    The end plate 12a has a lower surface which is provided with a media guide member 31 which is configured to convey an upwardly moving stream f of a mixture of raw material sludge and the pulverizing medium 30 into a downward flowing stream (see FIG. 2) to turn. This media guide member 31 consists of a downwardly tapered frustoconical member which is provided on a central surface of the lower surface of the end plate 12a and has a cylindrical inner space 31a in which the frustoconical member is configured so that an outer surface thereof thereto is configured to turn an upwardly moving mixture of raw material sludge and the bead-shaped fine grinding medium into a downward flow by a movement of the stirring member.
    Preferably, an angle α between the inclined surface and the upper surface (surface with larger surface) of the media guide member 31 is set to an angle between 45 and 90 degrees.
    A media separation component 32 is provided below the media guide component 31 and is designed to separate the media 30 dissolved in the raw material sludge from the raw material. As in FIG. As shown in Fig. 1, the hub 22a of the stirring member 22 extends upward to form an enlarged portion that serves as a partition member building part 22c. The media guide member 31 functions as a gap separator formed by a gap between a circular upper surface 22d of the partition member assembly part and a circular surface 31b of the media guide member 31. The width e of the gap is preferably approximately 1/3 the diameter of the fine grinding medium. This gap separator has a simple structure and can be manufactured at a low cost.
    The media partition member 32 preferably has a radius that is less than the radius of the lower surface of the media guide member 31. This is provided to prevent much of it from moving down the inclined surface of the media guide member 31 collecting fine grinding medium 30 flowing in the direction of the media separating component 32, so that the media separating component 32 is given a good media separability.
    The media guide member 31 has a cylindrically shaped interior space 31a, into which a cylindrically shaped drain nozzle-defining member 34 having an outer diameter smaller than an inner diameter of the cylindrically shaped interior space 31a is inserted, so that a drain nozzle 36 to enable the drainage of a product sludge after the separation of the fine grinding medium 30 by the media separating component 32 to an environment of the fine grinder by this between an outer environment of the outlet nozzle-defining component 34 and an inner environment of the media guide component.
    Inside the grinding chamber 14, an annular partition 50 extending upward from a position surrounding an outer periphery of the blades 22b of the stirring member 32 or a position radially spaced a certain distance from the outer periphery is disposed . This annular partition wall 50 consists of an inside ring plate 52, an outside ring plate 54 spaced radially outward from the inside ring plate 52, a lower ring plate 56 forming a lower side thereof, and an upper one Ring plate 58 forming an upper side thereof, an inner space of the ring-shaped partition wall 50 being created in a liquid-tight manner.
    The annular partition 50 preferably has a height dimension which is 3/5 to 4/5 of the height dimension of the fine grinding chamber 14.
    A lower end of the media guide component 31 preferably penetrates a space of the aforementioned interior space of the fine grinding chamber within the annular partition.
    This annular partition wall 50 is arranged to radially partition a given space of the grinding chamber 14 to form an inner region of the grinding chamber 14a and an annular outer region of the grinding chamber 14b. The inner region of the pulverizing chamber 14a serves as a downward flow of the mixture of the pulverizing medium and the raw material sludge, and the outer region of the pulverizing chamber 14b serves as an upward flow of the mixture of the pulverizing medium and the raw material sludge. Therefore, the flow f of the mixture of fine grinding media and raw material sludge within the fine grinding chamber 14 is shaped as a common flow (i.e. spiral flow), consisting of a flow moving in the circumferential direction of the fine grinding chamber 14 (i.e. a primary flow) and a flow capable of to repeat a cycle of motion regularly, which after a movement in the radially outward direction of the grinding chamber towards an inner wall of the grinding container, moves upward through the upward flow path between the annular partition and the grinding container and then moves by the action of the media guide member 31 from a central region of the grinding chamber 14 is moved downward to return to the agitating member 22 through the interior of the annular partition wall (ie, a secondary flow). In general, this spiral flow creates a problem of being unstable due to the weakness and instability of the secondary flow. Therefore, a vertically extending, flow smoothing vane 60 is preferably provided between a lower portion of the media guide member 31 and an upper portion of the annular partition wall 50, as shown in FIG. 1 is shown to strengthen and stabilize the secondary current and suppress the primary current. By providing the flow-smoothing blade 60, it is possible to restrict the free flow of the media in the fine grinding chamber 14 through the downward flow of the mixture of raw material sludge and the bead-shaped fine grinding medium as much as possible, thus reducing a concentration of the media around the media separating component 32 and for the Restrict media-separating component flowing media in order to give the media-separating component further improved separability. In addition, based on the amplification of the secondary flow to form a stable spiral flow, it is possible to unify a distribution of the pulverizing medium in the spiral flow and to eliminate dynamic localization by centrifugal force, thus generating an active shear force between the pulverizing media in order to further improve the function of the To offer fine grinding medium.
    Preferably, the distance between the outer surrounding wall of the annular partition and an inner surrounding wall of the fine grinding chamber is in the range of 10 to 50 mm. If the distance is less than the lower limit, the movement of the beads is unduly restricted. On the other hand, if the distance is greater than the upper limit, the free flow of the pearls is excessively increased.
    A jacket (not shown) for allowing a cooling medium (cooling water) to flow therethrough is provided along the outer periphery of the grinding container 12 in order to cool the grinding chamber 14. This jacket has a lower portion provided with a cooling water inlet for introducing cooling water therethrough and an upper portion provided with a cooling water outlet 46 for discharging the cooling water therethrough.
    The annular partition wall 50 is formed in the upper structure in such a way that it has an annular interior space and is supported by a plurality of tubes 62 which are connected to the grinding container. The tubes 62 can be used to allow cooling water to be supplied therethrough and removed from the annular interior. Therefore, in this embodiment, it is possible to additionally cool the raw material sludge from inside the grinding vessel 12.
    Each of the tubes 62 are preferably arranged to extend downwardly from the top of the grinding vessel 12 to have a bottom end that supports the guide ring 50 as shown in the drawing.
    Furthermore, the media guide member 31 can be shaped so that an interior space therein is defined and can be supplied with cooling water which passes through this interior space, so that the circulating raw material sludge or newly supplied raw material sludge are cooled.
    Furthermore, when cooling water passes through an interior of the discharge nozzle-defining component 34, the sludge flowing through the discharge nozzle 36 can be carried both by the cooling water that passes through the discharge nozzle-defining component 34 and by the cooling water that is the media guide component 31 passes through, be cooled.
    In general, the sludge discharged from the grinder must be cooled. A heat exchanger or something similar is therefore usually provided in the circuit. The above construction makes it possible to eliminate or simplify the need for a heat exchanger, thereby achieving a significant reduction in cost.
    The fine grinding container 12 is designed so that the end plate 12a can be removed from the fine grinding container 12 in order to facilitate maintenance work.
    In the agitator ball mill of the present invention, the agitation member 22 can be driven to rotate at a peripheral speed of 4 to 40 m / s.
    In the embodiment mentioned above, the media separating component consists of a gap separator. Alternatively, the media separation component can consist of a sieve separator as shown in FIG. 3 shown consist.
    In operation, the agitation member 22 is driven to rotate while a raw material sludge containing target particles for milling is supplied to the pulverizing chamber 14 from the raw material supply port. The sludge introduced into the fine grinding chamber 14 is guided downwards in the direction of the agitating component 22, while it sits on an already existing circulating flow of raw material sludge and the fine grinding medium 30 in the fine grinding chamber and is mixed by stirring by the agitating component 22. Subsequently, the resulting mixture of sludge and the medium 30 is moved radially outward to the inner peripheral wall of the grinding chamber 14 and then turned to form a flow f that moves upward through the upward passage between the inner peripheral wall of the grinding chamber 14 and the Guide ring 50 moves. Thereafter, when the mixture has moved into the vicinity of the end plate 12a, it is turned over to form the aforementioned downward flow.
    In the course of the current, part of the medium with a relatively large mass is directed downwards and separated from the sludge. In this case, an insufficiently finely ground part of the target particles with a relatively large particle size will behave in the same way as the medium. On the other hand, sludge containing sufficiently finely ground particles with a relatively small particle size enters the interior of the media separating member 32 and is discharged to the outside of the agitator ball mill through the drain nozzle 36 within the media guide member 31. By this construction, raw material particles can be finely milled and mixed in a suitably controlled flow by contact with free moving pulverizing media, whereby a high quality product is obtained. Furthermore, according to the agitator ball mill of the present invention, it is possible to achieve fine grinding with a narrow particle size distribution through the above-mentioned functions.
    List of reference symbols
    10: agitator ball mill 12: fine grinding container 14: fine grinding chamber 16: raw material sludge supply interface 22: stirring component 24: rotatable drive shaft 30: fine grinding medium 31: media guide component 32: media separating component 36: outlet nozzle 50: annular partition 60: flow-smoothing wing
    权利要求:
    Claims (10)
    [1]
    1. Agitator ball mill (10), which has:a grinding vessel (12) including an end plate (12a) closing an upper end of the grinding vessel (12) and an upright cylindrical grinding chamber (14) containing a grinding medium (30) in the form of pearls;a raw material sludge storage area provided in the pulverizing chamber (14);a stirring member (22) disposed in a lower region of the grinding chamber (14) and having an axis of rotation that is substantially coaxial with the central axis of the grinding chamber (14);an annular partition wall (50) arranged to extend upward from a position radially distant from an outer periphery of the agitation member by a given distance so that the interior of the grinding chamber (14) radially into an inner one Dividing region (14a) of a fine grinding chamber (14) and an annular outer region (14b) of a fine grinding chamber (14);a downwardly extending media guide member (31) disposed on a central region of a lower lower surface of the end plate (12a) and configured to convey a mixture of raw material sludge and grind media (30) through the outer region (14b) of the Grinding chamber (14) is guided upward by action of the agitating member (22) to turn into a downward flow so that the mixture is directed to the inner region (14a) of the grinding chamber (14);a media separating member (32) provided under the media guide member (31); anda product sludge discharge area provided in the media guide component (31), which is in communication with the interior of the media separation component, so that it is possible to post a product sludge after the fine grinding medium (30) has been separated by the media separation component (32) to drain outside,wherein the agitator ball mill (10) is designed so that the fine grinding medium (30) can be circulated between the inner region (14a) of the fine grinding chamber (14) and the outer region (14b) of the fine grinding chamber (14) by controlling the fine grinding medium (30) to finely grind a raw material in the raw material slurry by circulating the pulverizing medium (30).
    [2]
    2. agitator ball mill (10) according to claim 1, wherein the agitating component (22) has a hub (22a) with a portion that extends into a vicinity of a lower surface of the media guide component (31) so that a gap between a the upper surface of the portion of the hub (22a) and the lower surface of the media guide member (31), the media separator member (32) being a gap separator created by the gap.
    [3]
    3. Agitator ball mill (10) according to claim 1, wherein the media separating component (32) is a sieve separator arranged below the media guide component (31).
    [4]
    4. agitator ball mill (10) according to one of claims 1 to 3, wherein the media guide component (31) is designed as a downwardly tapering truncated cone guide component.
    [5]
    The agitator ball mill (10) according to any one of claims 1 to 4, wherein the media guide member (31) has a lower end which penetrates into a space of the inner region of the grinding chamber (14) within the annular partition (50).
    [6]
    6. agitator ball mill (10) according to one of claims 1 to 5, which has means to pass cooling water through an inside of the media guide component (31) and / or an inside of the annular partition (50).
    [7]
    7. agitator ball mill (10) according to any one of claims 1 to 6, wherein the annular partition (50) has a height which is 3/5 to 4/5 of the height of the fine grinding chamber (14).
    [8]
    8. agitator ball mill (10) according to any one of claims 1 to 7, wherein the beads of the fine grinding medium (30) have a diameter of 0.2 to 2.0 mm.
    [9]
    9. agitator ball mill (10) according to any one of claims 1 to 8, wherein the annular partition (50) consists of a resin material.
    [10]
    10. agitator ball mill (10) according to any one of claims 1 to 8, wherein the annular partition (50) consists of a ceramic material.
    类似技术:
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    同族专利:
    公开号 | 公开日
    TW201742671A|2017-12-16|
    WO2017217093A1|2017-12-21|
    US10618052B2|2020-04-14|
    CN107735182A|2018-02-23|
    JP2017221879A|2017-12-21|
    JP6808212B2|2021-01-06|
    US20190001338A1|2019-01-03|
    KR20180006388A|2018-01-17|
    DE112017002963T5|2019-02-28|
    CN107735182B|2020-05-08|
    KR102083070B1|2020-04-28|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP2016117575A|JP6808212B2|2016-06-14|2016-06-14|Media circulation type crusher|
    PCT/JP2017/014764|WO2017217093A1|2016-06-14|2017-04-11|Media-circulating crusher|
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