EP2981360B1 - Vorrichtung und verfahren zum erzzerkleinern mit federeinrichtung - Google Patents

Vorrichtung und verfahren zum erzzerkleinern mit federeinrichtung Download PDF

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Publication number
EP2981360B1
EP2981360B1 EP14715321.7A EP14715321A EP2981360B1 EP 2981360 B1 EP2981360 B1 EP 2981360B1 EP 14715321 A EP14715321 A EP 14715321A EP 2981360 B1 EP2981360 B1 EP 2981360B1
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EP
European Patent Office
Prior art keywords
crushing
ore
elements
spring
shaft
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Active
Application number
EP14715321.7A
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German (de)
English (en)
French (fr)
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EP2981360A1 (de
Inventor
Parviz Gharagozlu
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Micro Impact Mill Ltd
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Micro Impact Mill Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/11—Details
    • B02C7/14—Adjusting, applying pressure to, or controlling distance between, discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/0012—Devices for disintegrating materials by collision of these materials against a breaking surface or breaking body and/or by friction between the material particles (also for grain)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B02C21/02—Transportable disintegrating plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
    • B02C7/06—Crushing or disintegrating by disc mills with coaxial discs with horizontal axis

Definitions

  • the present invention relates to a method and a device for comminuting ore material or rock and / or slag, wherein the ore is pulverized using water in a wet process or even without the use of water in a dry process in a particularly ecological manner.
  • Mining plays a strategic role in the extraction of raw materials. Process improvements are the first step towards more resource use rather than resource consumption.
  • the crushing principle for example, a jaw crusher works only with mechanically generated pressure.
  • the crushing of the crushed material is usually in the wedge-shaped shaft between fixed and an eccentrically moving crushing jaw. During movement, the earthenware is crushed until the material is smaller than the set crushing gap.
  • ball mills In ball mills, the mostly pre-shredded ore stone mills together with iron balls in a drum, which is set in rotation. The ground material is thereby "crushed" by the balls, which manifests itself in a particle size reduction. Including a wear of the grinding balls themselves, which also contaminate the crushed ore with the iron of the iron balls.
  • the grinding cylinder In such known ball mills, however, the grinding cylinder must be designed to be particularly robust in order to be able to withstand the impact of the balls on the cylinder wall without damage, as a result of which the weight of the grinding cylinders increases greatly. As a result, the operating costs and energy consumption of such ball mills are high. Furthermore, there is a high wear of the rotating grinding cylinder due to the impact of the balls on the grinding cylinder, so that after a relatively short time both the iron balls and the grinding cylinder must be replaced.
  • ball mills are not suitable for crushing or pulverizing ore material together with slag or slag, since slag, which arises in particular during the further processing of ore as a waste product, is very brittle and has a hard structure.
  • the invention is based on the idea of providing a method and a device for comminuting ore material, wherein the device according to the invention comprises an ore feed device for feeding ore to be comminuted to a first pulverizing device.
  • the first pulverization device is constructed of at least two mutually movable comminution elements, which together form at least one comminuting space for the ore to be comminuted, thereby at least partially pulverizing the ore to be comminuted by a relative movement in the form of a rotation about the axis of rotation of at least one of the two comminution elements is that at least one of the crushing elements one or more acceleration elements, in particular projections are provided, which are arranged in particular on the front side of one of the two crushing elements and which accelerate and crush the ore to be crushed by the rotation of one of the two crushing elements, and wherein between the two crushing elements and / or in at least one of the two crushing elements, a gap is provided, through which during the rotation of
  • This solution is advantageous because the comminuting element can be displaced by the variable mounting of the comminution element.
  • the crushing element is thus on the occurrence of forces that occur in the pulverization of the ore and can lead to an overload of the device, displaceable, in particular automatically displaced, which directly a relief of the system or the device is effected or the forces are reduced.
  • the pressure application is effected by a ramp region which is helical shaped and formed on one or both comminution elements. Due to the helical shape, a conveying effect is generated during a rotation of a comminution element, by means of which the ore located between the comminuting elements, in particular between the ramp area of a comminution element and a corresponding area of the other comminuting element, is compacted or pressurized with increasing pressure.
  • the pressure applied to the ore lumps usually causes the ore lumps to disintegrate into very small pieces and thus give way to pressure.
  • the pressure generated threatens to increase further, whereby the load on the device components, in particular the crushing elements, the drive shaft, the bearings, etc., also increases sharply and even reach a level from the damage of one or more of these Components are possible.
  • a spring device according to the invention overloading of the components during operation of the first pulverization device can be prevented. Namely, the spring device springs in when the load becomes too great or exceeds a certain, in particular adjusted, level. Due to the deflection of the spring means results in a displacement of a crushing element, whereby the crushing elements are spaced apart.
  • the deflected spring means a return of the crushing element in the starting position.
  • the gap between the comminution elements was increased, as a result of which larger ore particles or ore lumps could escape from the first pulverization device.
  • All the ore particles or ore lumps that have leaked out of the first pulverization device are fed to a separating device, by which a separation of the already sufficiently comminuted particles and the not yet sufficiently comminuted particles or ore lumps is effected. That's not enough Crushed ore particles or lumps are then again supplied to the first pulverization device or a second pulverization device.
  • ore particles or ore lumps can occur in the region of comminution projections of the comminuting elements and do not disintegrate as a result of the pressure acting on them. Since the crushing projections of the crushing elements are arranged radially spaced from the center of the crushing projections ore particles or ore lumps in this area cause the formation of high moments, which can lead to damage of the first Pulvermaschines worn, in particular one or both crushing elements, the drive shaft, etc.
  • the arrangement according to the invention of a spring device preferably also makes it possible, in this case, for a deflection of a comminuting element, in particular of the comminution element, which is coupled to the shaft.
  • At least one of the comminution elements is arranged on a shaft for driving the comminution element, wherein the spring device is directly coupled to and prestressed by the shaft or the comminution element, and wherein the shaft and the comminution element arranged thereon counteract the spring force the spring device are displaceable.
  • a displacement of the shaft and of the comminuting element takes place in accordance with a further preferred embodiment as a function of the prestressing of the spring device, whereby a deflection of the spring device during operation of the first pulverizing device results from a deflection force generated between the two comminuting elements and directed against the spring force resulting from the bending force, when the deflection force exceeds the contact force.
  • This embodiment is advantageous because the Spring force preferably serves as an essential parameter for the change in position of the shaft and / or the crushing element.
  • the spring force is preferably arbitrarily changeable, whereby optimized settings or configurations can be provided for a wide variety of application and / or boundary conditions.
  • the spring device comprises a mechanical suspension means, in particular a spiral spring, a pneumatic suspension means and / or a hydraulic suspension means.
  • a mechanical suspension means in particular a spiral spring, a pneumatic suspension means and / or a hydraulic suspension means.
  • the spring device has a plurality of spring means, wherein the individual spring means are arranged such that they press the comminution element coupled to the shaft in the direction of the other comminution element.
  • This embodiment is advantageous because the different suspension means can be designed the same or different, which in turn a very precise adjustment of the desired total spring force can be undertaken.
  • the shaft is mounted according to a further preferred embodiment of the present invention in a housing of the device by means of rolling bearings and coupled to a drive means for rotating the shaft and the crushing element arranged thereon.
  • the storage by means of rolling bearings is advantageous because rolling bearings can absorb high forces and are very easy to adjust.
  • this embodiment is advantageous since the rolling bearings are preferably arranged in the housing of the device according to the invention and thus protected from environmental influences.
  • the spring device is arranged in an end region of the shaft or coupled to the shaft, wherein the end region is axially spaced from a second end region of the shaft on which the comminution element is arranged.
  • the rolling bearings are arranged for supporting the shaft between the end regions of the shaft.
  • Farther is preferably also provided in the region of the end, in which the spring device is provided, a drive means or a coupling with a drive means.
  • a crushing element according to the invention is arranged on a housing cover of the device in the extension direction of the axis of rotation at least temporarily, wherein the housing cover is movable relative to the device and wherein the fixed comminution element by means of a hydraulic device which connects the housing cover with the device to the other crushing element is pressed.
  • the hydraulic device is preferably designed as a hydraulic spring means, which also includes a method of housing cover for opening and closing the housing for e.g. Maintenance works possible.
  • adjustable means that a manipulation of the present objects results in a change of the respective variables.
  • a mechanical spring is provided, this is e.g. can be manipulated or compressed by means of a screw, whereby the possible spring travel is shortened.
  • the pressure in a pneumatic cylinder changeable.
  • Changing one of said variables by replacing one component means replacing that component with another component, preferably with different physical and / or mechanical properties.
  • another mechanical spring can be used, which consists of a different material, is larger, has a different shape, etc.
  • the displacement of the crushing element in operative engagement with the spring device is less than 5 cm, and preferably less than 3.5 cm, during operation of the first pulverizing device
  • the displacement of the comminuting element in operative engagement with the spring device is less than 5 cm during operation of the first pulverizing device and is preferably less than 3.5 cm and particularly preferably less than 1 cm.
  • the contact force generated by the spring device is at least 1000 N, preferably at least 2000 N and particularly preferably at least 10000 N.
  • Fig. 1 the device according to the invention is shown, wherein the ore to be crushed or the slag to be crushed is introduced into a hopper or feed hopper 1, which represents the ore feed device.
  • a screw conveyor may also be provided, which feeds the ore to be comminuted under pressure into the first pulverizing device.
  • the ore is fed through the hopper 1 to the cylinder-like housing 3, which is mounted on a foot 2 and a foot 6.
  • the pulverization of the ore to be crushed takes place.
  • a motor 8 provides a drive roller 11 and a belt 10 and a pulley 9 for the transmission of torque from the motor 8 to the first pulverizing device.
  • a suction opening 4 is optionally possible, through which the pulverized ore can be sucked by means of a negative pressure.
  • an outlet funnel 14 is provided in the lower region of the housing 3, which generally forms the first outlet device. Through this discharge funnel 14, the pulverized ore is discharged by means of gravity or by suction from the device according to the invention.
  • a control flap 15 may be provided on the housing 3 to provide access to the interior of the housing if necessary. However, this is not necessary for the function of the device according to the invention. As in particular from Fig. 3 can be seen, the control flap 15 as well as the feed hopper 1 in the upper region of the device according to the invention is arranged. Further, the ore may pass through the feed hopper in a continuous manner to the first pulverizer be fed or supplied in a non-continuous manner, the first pulverizing device, if only sporadically ore or slag is supplied to the device according to the invention.
  • Fig. 4 respectively.
  • Fig. 5 each show a side view of the device according to the invention, from which it can be seen that the outlet funnel 14 is provided in the lower region of the cylindrical housing 3.
  • the pulley 9 is, as already described, driven by the motor 8 and transmits this torque via a shaft 21 to a thereby rotating crushing element 30.
  • the crushing element 30 is constructed in the simplest form as a rotating rotary member 30 with a disk-shaped configuration, which together with a fixed fixed element 40, the first pulverization device 300 forms. How out Fig. 6 can be seen, the ore to be crushed through the inlet hopper 1 is thereby fed into the housing 3, that a feed opening 41 is provided substantially in the center of the fixed element.
  • the ore material supplied through the supply port 41 is then pulverized between the fixed member 40 and the rotating rotary member 30 and discharged and pulverized in a pulverized form radially outward between the two crushing members 30, 40 and collected within the casing 3 in pulverized form, and then from the Outlet funnel 14 discharged.
  • the material or the stone first passes into the machine via a feed funnel.
  • the material Per passage opening in the midst of the fixed disc jaw or the stationary crushing element 40, the material enters the space, wherein the driven disc jaw or the crushing element 30 provides for the acceleration of the material or the earthenware.
  • driving elements are preferably integrated, which put the supplied ore in a radial velocity. With the absorbed acceleration energy, the stones collide with each other and this leads to highly efficient pulverization of the ground material.
  • This micro-impact is based on the material being accelerated by the relative movement of the comminuting elements 30, 40 or of the jaws, and due to the narrowness of the interspace, the comminution takes place in very rapid time intervals.
  • the driver elements on the disc jaws 30, 40 ensure the high speeds in the radial as well as in the axial direction, so that in the sequence the resulting powder is pressed outward from the gap and as powder or powder for further processing by discharge funnel 14 back out of the device 290 arrives.
  • a pump device 410 adjoins the outlet funnel 14, to which in turn a separating device 413 adjoins.
  • the separating device 413 is particularly preferably designed as a centrifuge.
  • the ore fed via the outlet funnel 14 of the pump device 410 is preferably accelerated and / or pressurized by means of the pump device 410 and introduced into the separating device 413 via a line section 419, in particular a pipe or a hose.
  • the pump device 410 is directly or directly connected to the separating device 413.
  • Ore is discharged via the first outlet 414, which is again to be supplied to the first pulverization device, in particular to the size reduction elements 30, 40.
  • the feed of the ore discharged via the first outlet 414 preferably takes place according to the transport path T2, ie the ore to be further comminuted is preferably fed to the feed hopper 1.
  • the housing 3, the first pulverization device 300 and / or the feed hopper 1 to a feed port 520, via the flowable substances of the first pulverization device 300 are fed.
  • the ore conveyed via T2 is regarded as flowable substance.
  • the feed port 520 may have a plurality of coupling points for coupling one or more further line elements.
  • a line or a line element for supplying a liquid, in particular water or a liquid having water is coupled via the feed connection 520 to the device 290 according to the invention.
  • the separating device 41 has prefers a second outlet 416, from which the already sufficiently crushed ore is discharged.
  • the sufficiently comminuted ore or ore which is no longer to be supplied to the first pulverization device 300, ie the comminution elements 30, 40, is preferably conveyed corresponding to the transport path T3 directly to a further processing device, in particular a second pulverization device (cf. Fig. 17 ) or a flotation device.
  • the spring device 504 may be formed, for example, as a mechanical, pneumatic or hydraulic suspension means and is preferably arranged between the pulley 9 and the shaft 21. However, it is conceivable that the spring device 504 may also be formed or provided at other positions in the region of the shaft 21.
  • the reference character S1 indicates a displacement path which can be traveled by the shaft 21 or between which the shaft 21 is variably supported when the shaft 21 is displaced in its axial direction and causes a deflection of the spring device 504.
  • the pressure generated threatens to increase further, whereby the load on the device components, in particular the crushing elements 30, 40, the drive shaft 21, the bearings 506, 508, etc. also increases sharply and can even reach a level , from which damage to one or more of these components is possible.
  • a spring device 504 Due to the use according to the invention of a spring device 504, an overload of the components during operation of the first Pulverization device 300 can be prevented. Namely, the spring device 504 springs in when the load becomes too great or exceeds a certain, in particular adjusted, level. Due to the deflection of the spring device 504 results in a displacement of a crushing element 30, whereby the crushing elements 30, 40 are spaced from each other.
  • comminution projections 35, 45 of the comminuting elements 30, 40 can occur in the region of comminution projections 35, 45 of the comminuting elements 30, 40 and do not disintegrate as a result of the pressure acting on them. Since the comminution projections 35, 45 of the comminution elements 30, 40 are arranged radially spaced from the center of the comminution projections 35, 45, ore particles or ore particles in this area cause the formation of high moments, which damage the first pulverization device 300, in particular one or both comminution elements 30 , 40, the drive shaft 21, etc., can lead.
  • the inventive arrangement of a spring device 504 preferably also in this case allows a deflection of a comminuting element 30, 40, in particular of the comminuting element 30, which is coupled to the shaft 21, to take place.
  • the type of pulverization according to the invention requires only a short time due to the small space requirement of the comminuting space, whereby the pulverized ore is transported away through a gap 60 between the two comminution elements 30, 40 during the rotation of the rotary element to the outside and from both comminuting elements 30, 40, as exemplified by the powdered ore 55 in Fig. 7 is shown.
  • This means that the ore lumps are pulverized by a relative movement in the form of a rotation between the two comminution elements 30, 40, wherein according to another embodiment, two comminution elements 30, 40 can be used with different rotational speeds and the same or opposite direction of rotation.
  • Fig. 7 Analogous to Fig. 6a the ore to be comminuted is fed via the feed opening 41, which is preferably located substantially in the center of the comminution section 40, which is preferably designed as a fixed element, into a comminuting space between the fixed element 40 and the rotary element 30.
  • Fig. 7 By way of example, individual ore lumps 50 are shown, which show the ore to be comminuted.
  • the two crushing elements form a crushing space, wherein one or more acceleration elements are arranged on at least the rotary element or the fixed element in order to provide for an acceleration and a corresponding comminution of the supplied ore.
  • one or more acceleration elements are arranged on at least the rotary element or the fixed element in order to provide for an acceleration and a corresponding comminution of the supplied ore.
  • Fig. 8 shows the two crushing elements of Fig. 7 in the unfolded state along with exemplarily arranged to be comminuted ore 50 and pulverized ore 55.
  • the ore to be comminuted 50 is fed via the feed opening 41 through the fixed element 40 in the crushing space between the two crushing elements, as already explained.
  • the rotary member 30 has a ramp portion 31 which has a rising pitch from the start of the ramp 32 to the ramp end 33 and may be part of the crushing space.
  • the ore 50 to be comminuted is already comminuted on account of the rising ramp region 31, as shown schematically by the decreasing spherical ore particles 51 and 52.
  • the ramp region 31 cooperates with a ring region 42 of the fixed element 40. Subsequently, the ore of protrusions 35, which act as accelerating elements, accelerated and pulverized due to the rotation of the rotary member 30, which in Fig. 8 are arranged at a uniform spacing in the circumferential direction of the rotary member 30.
  • the fixed element 40 may also have projections 45, which are arranged analogously to the projections 35 of the rotary member 30. Between the projections 35 of the rotary member corresponding recesses 36 are provided on the end face of the rotary member 30 as part of the crushing space.
  • the protrusions 35 have a predetermined angle in the transition to the recesses 36 to accelerate the ore to be crushed in both the radial direction in accordance with the rotation and the axial direction of the rotation axis of the rotary member.
  • the ore to be comminuted is accelerated into the center of the comminution space, where it encounters other accelerated ore elements, resulting in a fictitious pulverization by the micro-impact.
  • the fixed element 30 has corresponding recesses 46 between the projections 45 of the fixed element 40.
  • the pulverized ore 45 enters the space 60 between the two crushing members 30 , 40.
  • the gap 60 is formed by the variable distance between the two crushing elements 30, 40, wherein in addition to the variable distance both in the rotary member 30 star-shaped away from the axis of rotation of the rotary member 30 leading Auslasseintene 61 provided in the rotary member 30 could be.
  • Auslasseinitese 62 are provided in the fixed element 40 at a uniform spacing.
  • the pulverized ore 55 is discharged to the outside through the outlet recesses 61 and 62, respectively. If the distance between the rotary member 30 and the fixed member 40 is almost non-existent, that is, the two members are substantially abutted against each other, the pulverized ore 55 is discharged to the outside substantially through the outlet recesses 61 and 62, respectively.
  • variable distance between the two comminution elements can be adjusted in particular by a hydraulic device, wherein preferably the fixed element 40 can be variably positioned in the axial direction with respect to the rotary element 30 to adjust the pulverization in particular to a different ore material in terms of size or composition can.
  • the fixed element 30 or the rotary element 40 or the two comminution elements can be moved apart hydraulically in the axial direction for repair and assembly work. Alternatively, they can be removed from the operating position by a pivoting movement of one of the two crushing elements from each other.
  • the acceleration elements 35 or other elements of the first pulverization device subjected to high mechanical stress can be processed or replaced.
  • this enables mechanically highly loaded elements within the first pulverization device or for example the acceleration elements or projections 35 to be constructed from different materials and can be exchanged as required. This allows wear parts within the crushing space, such as the projections, also adapted to different ore material.
  • FIG. 6 which illustrates a schematically enlarged distance between the rotary member 30 and the fixed member 40, it can be seen that at only a small distance the ore to be crushed is thrown radially outwardly by the rotation and is caught by the casing 3 before the pulverized Ore is discharged via the outlet funnel 14 of the inventive device 290, for example, only by gravity or additionally by a suction device or a pump device or the like.
  • Fig. 9 shows a further embodiment of a fixed element 140, which has a feed opening 141 in the center.
  • the fixed element 140 is that of Fig. 8 identical, wherein the fixed element 140 has obliquely Auslasseinitese 162 through which the pulverized ore is transported to the outside.
  • FIG. 9 shown fixed element 41 may also be used in the illustrated form as a second rotary element, which compared to the in Fig. 8 illustrated rotary member 30 may have a different relative speed.
  • a comminution element shown has an angular range 144, which extends in each case on both sides from the acceleration element 143 to the recess 145.
  • these two angular regions 144 may also be provided on only one side of the acceleration element 143 in order to accelerate the ore to be comminuted, depending on the direction of rotation of the comminuting element, both radially and axially with respect to the rotation of the comminuting element.
  • Fig. 10 is a cross section of the fixed element 40 of Fig. 8 illustrated, wherein the feed opening 41 has a funnel-shaped structure.
  • FIG. 11 a further embodiment of the crushing elements according to the present invention is shown.
  • FIGS. 7 to 10 are in the Fig. 11 to Fig. 13 further embodiments for cooperating crushing elements shown, which within the inventive device according to Fig. 6 can be arranged.
  • a fixed element 240 and a rotating rotary element 230 are shown, wherein the ore to be comminuted 50 is fed via the feed opening 241 into the comminuting space between the fixed element 240 and the rotary element 230.
  • the crushing space between the fixed member 240 and the rotary member 230 is formed from the rotation axis of the rotary member 230 to the outside substantially conically tapered, whereby the pulverization of the ore is accomplished on the one hand.
  • the other is off Fig. 12 it can be seen that the rotary element 230 has recesses 236, which are arranged at a uniform distance around the axis of rotation of the rotary element.
  • These recesses 236 provide in particular by the obliquely arranged transitions of the recess 236 for acceleration and thus a pulverization of the ore due to the rotation, which ensures a relative movement between the rotary member 230 and the fixed element 240.
  • Fig. 13 is the fixed element 240 of Fig. 11 shown, which together with the rotary member 230 of Fig. 12 interacts.
  • the fixed element 240 shows in cross section in Fig. 13 the feed opening 241.
  • the fixed element 240 has analogous to the rotary member 230 recesses 246 in the radial direction about the center of the axis of rotation.
  • the chamfered portions of the recesses 236, 246 of the rotary member 230 and the fixed member 240 provide for an acceleration and crushing of the ore, which is discharged in powdered form through the gap 260 between the rotary member 230 and the fixed member 240 to the outside.
  • a method for comminuting ore material and / or, in particular, slag is thus provided, wherein the ore feed device 1 is provided for feeding ore 50 to be comminuted to a first pulverizing device.
  • the first pulverization device is constructed of at least two mutually movable comminution elements 30, 40 which together form a comminuting space for the ore to be comminuted, thereby pulverizing the ore to be comminuted by a relative movement in the form of a rotation of at least one of the two comminution elements 30, 40 is that at least one of the crushing elements 30, 40 one or more acceleration elements, in particular projections, are provided, which are arranged in particular on the front side of one of the two crushing elements 30, 40, and which by the rotation of one of the two crushing elements 30, 40 accelerate or crush the ore to be comminuted.
  • a gap 60 is provided, through which during the rotation the pulverized ore from the center of the rotation or from the axis of rotation of the rotary element to the outside and from the two comminution elements 30th , 40 is transported away.
  • the thus pulverized ore between the two crushing elements is discharged through an outlet device which is at least functionally connected to the intermediate space 60, to the outside.
  • water can still be fed through the ore feed device into the comminution chamber during the comminution process through a water inlet (not shown) or through the supply of water.
  • the water forms together with the ore during and after the pulverization a mud-like compound, wherein the water is transported together with the pulverized ore material through the outlet device.
  • the ramp area 31 is particularly advantageous for the slag crushing, since such a ramp area on the rotary member for pre-shredding of slag due to the rotation of the rotary member provides, in the transport direction after the ramp area projections and / or recesses according to the invention in the Crushing elements are provided to pulverize the particularly brittle and hard slag.
  • both crushing elements can rotate in the opposite direction to increase the relative movement between the two crushing elements.
  • the shape of the crushing chamber which is formed by the two crushing elements, in different ways executable, with different types of accelerating elements may be arranged in plate-shaped or wedge-shaped or similar form, accelerated by the ore to be crushed between the two crushing elements and thereby pulverized becomes.
  • a further crushing chamber which is provided independently of the two crushing elements, but is integrated into the device according to the invention.
  • FIG. 14 an exploded perspective view of the device 290 according to the invention is shown.
  • This illustration shows that the device 290 in the region of a first pulverization device 300 has a feed device 1, in particular a feed hopper 1, by means of which ore to be processed can be conducted into the housing 3 to the first pulverization device 300.
  • the housing 3 is preferably positioned by means of two plate-like feet 2, 6 with respect to the ground or with a preferably below the housing 3 arranged frame member 305 coupled.
  • the housing 3 of the first pulverization device 300 preferably has an opening 4, in particular a suction opening 4 for the suction of already crushed ore.
  • an outlet device 14 (cf. Fig. 17 ) educated.
  • Reference numeral 430 preferably denotes a hydraulic device (cf. Fig. 21a / b ).
  • the second pulverizer 301 is formed laterally adjacent to the first pulverizer 300.
  • the first pulverizer 300 and the second pulverizer 301 are disposed on the same frame member 305.
  • a housing wall 306 of the housing 3 is coupled on the one hand to the first pulverization device 300 and on the other hand to the second pulverization device 301.
  • the housing wall 306 preferably has a plurality of fixing points 354, 381 for arranging, receiving and / or fixing a first means 302 for fixing and / or supporting a preferably designed as Mahlring 344 rotating body, a second means 303 for fixing and / or storing the grinding ring 344th and a third means 304 for fixing and / or supporting the grinding ring 344.
  • the Mahlring 344 is preferably movably supported and driven by the movement means 302, 303 and 304. Furthermore, the grinding ring 344 preferably encloses in the radial direction at least one further rotation body 345 and particularly preferably at least or exactly two rotational bodies 345, 380, which are particularly preferably designed as drum-like bodies. Furthermore, an opening 382 is preferably formed in the housing wall 306. The first opening 382 is particularly preferred for performing the drive shaft, which is provided for driving the crushing element 30.
  • the first means 302 and the second means 303 are preferably identical in design and preferably arranged below a center of the grinding ring 344 in the vertical direction.
  • the means 302, 303 may also be referred to as axles or movable shafts 371, 313.
  • the first means 302 and the second means 303 each have a force introduction element, in particular a drive wheel 367, on.
  • the drive elements 367 are preferably mechanically coupled together and thus simultaneously or synchronously movable or driven.
  • the drive wheel 367 is preferably followed in the axial direction by a disk element 364, a fixing element 366, a stop element 361, rolling bearings and / or one or more receiving sleeves 356, by means of which the axles or shafts 371, 313 preferably engage with the grinding ring 344 in an operative connection can be brought on.
  • a drive wheel 367 of a means 302, 303 is directly or indirectly connected to a further drive element 368, in particular a gear for transmitting drive forces.
  • the toothed wheel 368 is preferably connected via an endless element 369, in particular a chain or a belt, to a further drive element, in particular a further toothed wheel 368, which is preferably arranged directly on a drive device, in particular a motor 370.
  • the motor 370 directly cooperates with one of the drive wheels 367 or is arranged thereon.
  • the third means for fixing and / or force transmission 304 which is preferably also denoted as upper axis or shaft 357, is preferably arranged above the center of the grinding ring 344 and particularly preferably arranged in the vertical direction just above the center of the grinding ring 344.
  • the third means 304 preferably comprises a disk element 365, a fixing body 363, an inner cover element 362, a nut 360, a washer 359, roller bearings 358 and / or one or more receiving sleeves 355, by means of which the shaft 357 preferably with the grinding ring 344 can be brought into an operative connection, on.
  • the first means 302, the second means 303 and / or the third means 304 are preferably aligned substantially or exactly parallel to each other, wherein preferably at least one of these means 302, 303, 304 is also aligned substantially or exactly parallel to a rotation axis of a crushing element ,
  • the reference numeral 307 denotes a fourth means for fixing and / or force transmission.
  • the fourth means 307 is preferably used for aligning or holding the rotary body 345, 380 with respect to the Mahlring 344.
  • the fourth means 307 has a drive means for the active drive or a rotational body 345, 380 or with a coupled to such a drive device.
  • the fourth means 307 may preferably be referred to as an axle or shaft 351 and preferably has an outer cover element 354, a fixing device 366, an inner cover element 352, a spacer element 348 for receiving and / or spacing the axles 347, Wälzlagerabdeckmaschine 348, axles 347 and /. or rolling bearings 346 on.
  • the rotary bodies 345, 380 are therefore rotatably supported by the bearings 346.
  • Fig. 15 is a detailed perspective view of components of the second pulverization device 301 shown.
  • the second pulverization device 301 has a rotational body designed as a grinding ring 344, which encloses two further rotational bodies 345, 380, which are embodied as drum-like grinding elements or grinding drums, radially at least in sections and preferably completely.
  • the grinding ring 344 and the grinding drums 345, 380 preferably have substantially the same length, wherein it is also conceivable that the grinding drums 345, 380 are made axially longer than the grinding ring 344 or vice versa.
  • the grinding drums 345, 380 preferably have an outer surface 383, which are preferably spherical, in particular starting from its substantially axial center tapering towards its axial ends, are formed.
  • the inner surface 383 of the grinding ring 344 is preferably cylindrical, wherein it is also conceivable that it is negative or substantially negative to the outer surface 383 of the grinding drums 345, 380 is formed.
  • the outer surface 384 of the grinding ring 344 is preferably cylindrical. With the outer surface 384 of the grinding ring 344 are preferably exactly three means 302, 303, 304 for fixing and / or force transmission, in particular via a respective element 55 for guiding the grinding ring 344, preferably in a line contact and particularly preferably in a surface contact.
  • the reference numeral 348 preferably denotes a bearing cover, which preferably the drum body of the grinding drum 380 and the bearing, which preferably as a roller bearing consisting of preferably at least or exactly two rolling bearings 346 (see. Fig. 14 ), at least partially radially overlapped, in particular covered such that the storage is protected from the entry of ore powder.
  • the axes of rotation of the two grinding drums 344, 380 are preferably arranged spaced apart by a spacing element 349.
  • the spacing element 349 is preferably designed as a strut-shaped, in particular plate-shaped, receiving element, in particular of metal.
  • a fixing body 366 is also preferably arranged on the spacing element 349 or coupled to the spacing element 349.
  • the fixing body 366 can in this case for the one-sided attachment of the grinding drum unit 345, 380, 348, 349 on a housing part (not shown), in particular a further housing wall, be provided.
  • the fixing body 366 is designed as a drive unit 366 and serves for actively driving the grinding drums 344, 380.
  • the first means for fixing and transmitting 302 and the second means for fixing and transmitting 303 have gears 367 which are interconnected by a chain 360. It can also be seen that the second means for fixing and transmitting 303 is also provided with a circular disk-like power transmission plate 368 formed radially for receiving a belt 372 through which the second means for fixing and transmitting power 302 with another round power transmission plate 368 which in turn is connected to a drive device 370, in particular a motor for operating the second pulverization device 301.
  • Fig. 16 is a sectional view represented by the Erzzerklein mecanicsvortechnisch 290 according to the invention.
  • the device housing 3 which by means of feet 6 against a substrate or a support frame (see. Fig. 19 or Fig. 20a / b ) is held.
  • the housing 3 encloses the second pulverization device 301 preferably completely in the circumferential direction.
  • On the inner surface of the housing 3 or on the second Pulvermaschiness issued 301 facing surface side of the housing are preferably a plurality of holding devices, in particular exactly three holding devices namely a first holding means 402, a second holding means 403 and a third holding means 404, respectively.
  • the holding devices 402, 403, 404 are preferably used for positioning or holding drive and / or guide elements 355.
  • the drive and / or guide elements 355 are preferably rollers which are rotatably arranged on the holding devices 402, 403, 404.
  • at least one of the drive and / or guide elements 355 is driven by means of a motor.
  • two or all drive and / or guide elements 355 are driven, in particular by a motor or by a respective motor.
  • the drive and / or guide elements 355 serve for driving and / or guiding the grinding ring 344.
  • the grinding ring 344 is preferably adjacent to the housing wall 406.
  • the housing wall 406 preferably has a central opening 382, which is used to carry out a drive device, in particular a shaft, for driving the first Pulverization device 300, in particular of the size reduction element 30 (see. Fig. 6 and Fig. 17 ) is provided. Furthermore, in the housing wall 406, a feed device 408 is formed or the feed device 408 is preferably tubular and extends through the wall 406 therethrough. The feed device 408 is preferably used for feeding material already pulverized with the first pulverization device 300. The feed device 408 preferably extends within the housing 3 or into a region enclosed by the grinding ring 344 in such a way that the material supplied by means of the feed device 408 is introduced in front of the first grinding drum 345.
  • the grinding ring 344 preferably rotates in the direction indicated by the reference R, whereby the material introduced in front of the first grinding drum 345 is conveyed between the grinding ring 344 and the grinding drum 345. Through the interaction of grinding ring 344 and grinding drum 345, the material is further crushed or pulverized. Furthermore, a second grinding drum 380 is shown, it is thus conceivable that a plurality of grinding drums 345, 380 are used. It is preferably conceivable that any number of grinding drums 345, 380, in particular exactly, more or less than one, two, three, four or five grinding drums, are used.
  • the individual grinding drums 345, 380 are preferably rotatable and particularly preferably actively driven by means of a drive device.
  • the grinding drums 345, 380 only passively, ie driven or rotated as a result of rotation of the grinding ring 344.
  • the grinding drums 345, 380 are preferably arranged on the housing wall 406 via spacer elements 349 for receiving the grinding drums 345, 380 via coupling points 412. It is conceivable here that the positions of the grinding drums 345, 380 can be changed or adjusted by means of the spacing elements 349.
  • the distance, in particular a maximum distance, of the outer grinding drum surface to the inner Mahlringober decoration is preferably adjustable.
  • the grinding drums 345, 380 or one of the grinding drums 345, 380 is spring-loaded or pressed against the grinding ring or biased.
  • Fig. 17 is one opposite the Fig. 6a around the second pulverizing device 301 extended ersatz grinding device 290 according to the invention shown.
  • the ore shredder device 290 has a feed hopper 1, via which coarse material to be shredded can be introduced into the device.
  • the material is conveyed by means of the first pulverizing device 300, in particular by the interacting elements 30, 40, ie the crushing element 30 and the fixed element 40, crushed.
  • the comminuted pieces of material are moved out of the area between the elements 30, 40, in particular by gravity, and reach a funnel 14.
  • the elements 30, 40 are preferably at a distance of substantially, exactly or at most 7 cm and more preferably in FIG a distance of substantially, exactly or at most 5 cm and more preferably at a distance of substantially, exactly or at most 3.5 cm to each other. It is conceivable that the distance between the elements 30, 40 is adjustable, in particular variable, is. Particularly preferably, the distance between the elements 30, 40 can be adjusted continuously or in predefined stages.
  • the funnel 14 passes the comminuted material, according to the arrow T1, via a pump device 410 into a separator or into a separating device 413.
  • the separator 413 separates, in particular ciclo-type, sufficiently comminuted material portions of material portions which have not been sufficiently comminuted.
  • the insufficiently comminuted material portions, which have been separated by the separator 413 from the sufficiently comminuted material portions, are discharged from the separator 413 via a first outlet port 414 or branch, and are conveyed according to the conveyor line indicated by the reference numeral T2 of a feed device 408 (cf. Fig. 16 ).
  • the introduction device 408 is preferably mounted in the region of the wall 406 and serves for introducing the material fractions to be further comminuted into the second pulverization device 301. It is additionally or alternatively also conceivable for the further material fractions to be comminuted to be fed again to the first pulverization device 300.
  • Reference numeral 416 denotes a second outlet opening or a further branch.
  • the sufficiently pulverized ore according to the conveyor line T3 can be diverted or discharged from the area of the device 290, wherein the ore is preferably conveyed or conducted directly to a flotation device.
  • the separator 413 has three outlet devices and the comminuted material assigns three material size range, wherein the already sufficiently comminuted material is further promoted according to T3 and the insufficiently comminuted material is divided into a coarse and a fine portion. The coarse fraction can then be fed again to the first pulverization device 300 and the fine fraction can be fed to the second pulverization device 301, in particular according to FIG.
  • the sufficiently comminuted, in particular pulverized, material fractions are removed from the ore comminution device via the arrow marked in accordance with the arrow designated by the reference symbol T3, and are particularly preferably supplied directly to a flotation device.
  • the shafts 357, 371 serve to drive the elements for guiding and / or driving 355.
  • the individual shafts 357, 371 are connected to drive devices 304.
  • a third wave is particularly preferred (cf. Fig. 14 ) for driving a third guiding and / or driving element 355 (cf. Fig. 15 ) intended.
  • the grinding drums 345, 380 are shown, which are enclosed in the circumferential direction of the Mahlring.
  • the reference numeral 504 designates a spring means, e.g. can be designed as a mechanical compression spring or coil spring, gas spring or as a hydraulic spring.
  • the spring means 504 causes the shaft 21 and thus the crushing means 30 is axially loaded with a force of several tons. This means that an axial displacement of the shaft 21 in the X-direction takes place only when, for example, as a result of a material jam between the crushing elements 30, 40 forces are generated, which are directed in the X direction and exceed the spring force.
  • the spring device 504 thus advantageously causes the shaft 21 and the crushing elements 30, 40 to be exposed in X-direction only to a predetermined or set maximum force, whereby these elements are protected from damage.
  • the displacement S1 of the shaft 21 as a result of a deflection of the spring means 504 is preferably in the range of a few or a few millimeters to a few or a few centimeters.
  • the spring force can be set or predefined in such a way that defined ore particle sizes can be generated. The smaller the spring force, the larger the resulting ore particle sizes.
  • the spring force is infinitely or continuously or in stages adjustable.
  • roller bearings 506 and 508 denote roller bearings, by means of which the shaft 21 is preferably mounted.
  • the roller bearings 506 are preferably designed as ball bearings and the rolling bearings 508 are preferably designed as a tapered bearing or needle roller bearings.
  • Fig. 18 is the in Fig. 17 shown embodiment in an open configuration.
  • at least the comminution element 30, and preferably the entire interior of the device 290 is preferably accessible to a person for maintenance work.
  • the housing cover 420 is by means of an actuator 434 or by means of several actuators, in particular exactly two actuators 434, a hydraulic device (see. Fig. 21a / b ) move to the open position.
  • a transport device 386 is shown in a plan view, on which a shredding device 290 according to the invention is arranged.
  • the transport device 386 is preferably designed as a trailer that can be pulled by a motor vehicle.
  • the transport device 386 has a frame 388, on which the shredding device 290 is preferably arranged permanently.
  • the shredding device 290 is detachably coupled to the transport device 386.
  • On the frame 388 at least or exactly two wheels per axis are preferably arranged.
  • the transport device 386 has exactly one axis, it being conceivable that it has several, in particular two or three, axes. Via the coupling point 392, the transport device 386 can be coupled to a motor vehicle or another trailer.
  • Fig. 19b is a side view of in Fig. 19a shown representation
  • the shredding device 290 may alternatively be arranged on a scaffold or a platform.
  • the shredding device 290 shown arrangement is advantageous because the discharge area 394, from which the crushed material is discharged, is easily accessible due to the distance between the crusher 290 and the ground.
  • the drive means or motors characterized, via which the rotary ring body 344 (see. Fig. 15 ) is drivable.
  • the device 290 of the invention is shown in a closed configuration.
  • the housing cover 420 which preferably communicates with the supply funnel 1, abuts against the housing 3, in particular sealingly.
  • the housing cover 420 is preferably held by means of a closure device 430, which is particularly preferably designed as a hydraulic device, and preferably pressed against the housing 3.
  • the hydraulic device 430 preferably has a stator 432, which is particularly preferably arranged in the region of the housing 3 or on the housing 3.
  • the stator 430 is preferably coupled to an actuator 434 such that it is displaceable in the direction of extension of the axis of rotation of the comminution element 30.
  • such a hydraulic device 430 is arranged on both sides of the housing 3. Furthermore, it is conceivable that the said hydraulic devices are also arranged in the region of the upper and lower wall region of the housing 3. It is also conceivable that more than two, in particular three or four, hydraulic devices 430 are provided, in particular in the upper and lower housing region and in the lateral housing regions. In the case of a plurality of hydraulic devices 430, these are preferably actuatable at the same time, in particular via a control device.
  • the actuator 434 is preferably connected or coupled to the housing cover 420 via an actuator housing cover coupling point 436.
  • device 290 is shown in an open or opened configuration.
  • the open or open configuration is characterized in that the housing cover 420 is at least partially removed from the housing 3 or spaced.
  • Such spacing may be as shown, ie, the housing cover 420 may be spaced from the housing 3 by a generally predetermined distance.
  • the spacing is preferably carried out by means of one or more hydraulic devices 432.
  • the housing cover 420 on the one hand on the housing. 3 rests and is pivoted about the abutment point by means of the closure device or hydraulic device 430.
  • the feed hopper 1 and the comminution element 40 are preferably arranged on the housing cover 420.
  • the ore to be supplied is preferably through the housing cover 420 and through the crushing element 40 into the closed housing 3 (see. Fig. 21a ) can be filled
  • Fig. 21b to take a designated by the reference numeral 500 human.
  • the housing cover 420 with the devices arranged thereon, in particular the comminution element 40 is movable so far that a person 500 is moved into the device 290 by the opening 502 resulting from the housing cover displacement can go into it or wait for some or all components in it.
  • maintenance work wear elements such as the ramp portion 31, the projections 35, the projections 45 of the two crushing elements 30, 40 (see. Fig. 8 ) be replaced.
  • the hydraulic device 430 can additionally serve as a spring device for the variable storage of the comminution element 40.
  • the device according to the invention also has process advantages in dry and / or wet process.
  • the process independence of water is particularly important.
  • the device according to the invention works both dry and wet - an advantage which the process chain of crushers and mills has to distinguish on the basis of the function.
  • the Micro Impact mill also crushes slag or a mixture of slag and ore material, which overstrains the shredding technology of classic plants due to the hardness of the material.
  • this device can process rock and / or slag. Even bricks from blast furnaces do not bother her. Viewed from the scope of performance, the device according to the invention can even be the entire process chain of several Replace crusher and ball mill. Rock fragments preferably up to 80 cm, more preferably up to 50 cm and particularly preferably up to 40 cm are processed directly flotationsnic in one process step. This is faced with several crushing stages with crushers until then a ball mill does its job.
  • the device according to the invention and the method according to the invention make it possible to comminute and pulverize slag per se or together with ore material, since due to the small dimensioning of the comminuting space and the relatively small sized comminution elements with a corresponding rotation of high forces on the crushing ore material or act on the slag to be crushed and thereby effective pulverization takes place. Due to the rotation, which due to the dimensions 100 can have up to approximately 2000 revolutions per minute of a comminution element, also slag can be effectively pulverized, which is very brittle and has a hard structure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
EP14715321.7A 2013-04-05 2014-04-07 Vorrichtung und verfahren zum erzzerkleinern mit federeinrichtung Active EP2981360B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013005943.7A DE102013005943A1 (de) 2013-04-05 2013-04-05 Vorrichtung und Verfahren zum Erzzerkleinern mit Federeinrichtung
PCT/EP2014/056901 WO2014162011A1 (de) 2013-04-05 2014-04-07 Vorrichtung und verfahren zum erzzerkleinern mit federeinrichtung

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EP2981360A1 EP2981360A1 (de) 2016-02-10
EP2981360B1 true EP2981360B1 (de) 2018-05-30

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EP (1) EP2981360B1 (zh)
CN (1) CN105555407B (zh)
AU (1) AU2014247020B2 (zh)
CA (1) CA2910729C (zh)
CL (1) CL2015002953A1 (zh)
DE (1) DE102013005943A1 (zh)
NZ (1) NZ713858A (zh)
WO (1) WO2014162011A1 (zh)
ZA (1) ZA201507356B (zh)

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DE102013005931A1 (de) 2013-04-05 2014-10-09 Micro Impact Mill Limited Vorrichtung und Verfahren zum Erzzerkleinern mit Rückführung
CN108201924B (zh) * 2016-12-19 2019-12-10 浙江大博文鞋业有限公司 一种带有双旋转磨盘的物料粉碎机构
US20190262837A1 (en) * 2018-02-23 2019-08-29 Orenda Automation Technologies Inc. Gap adjusting system for a disc mill assembly of a reducing machine
BE1031019B1 (de) * 2022-11-09 2024-06-10 Smidth As F L Zerkleinerungsvorrichtung mit Plattenelement
WO2024100585A1 (en) * 2022-11-09 2024-05-16 Flsmidth A/S Comminution device with plate element

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Publication number Priority date Publication date Assignee Title
US1310031A (en) * 1919-07-15 Chall
DE296902C (zh)
DE400229C (de) 1922-03-23 1924-08-02 Schumacher Sche Fabrik Verfahren zur stetigen Nassvermahlung in Kugelmuehlen
DE396976C (de) * 1923-10-19 1924-06-11 Heinrich Cramer Spannvorrichtung fuer die Stellfeder zum Andruecken des einen Mahlsteins von Schrotmuehlen
US2499347A (en) 1945-04-16 1950-03-07 Mine And Smelter Supply Compan Electrical circuits for grinding mills
US4039153A (en) 1976-04-26 1977-08-02 Hoffman Douglas L Grinding mill
US4872617A (en) * 1988-06-02 1989-10-10 Sprout-Bauer, Inc. Canted, spring-loaded feed screw support
CN2894838Y (zh) * 2006-01-14 2007-05-02 张文墩 陶瓷粉末原料精磨机
CN2923024Y (zh) * 2006-05-19 2007-07-18 比亚迪股份有限公司 一种包覆球磨机
DE102009047818A1 (de) 2009-09-30 2011-04-07 Gharagozlu, Parviz, Bucalemu Verfahren und Vorrichtung zur Zerkleinerung von Erzmaterial
CN202028436U (zh) * 2011-03-29 2011-11-09 泉州市信和涂料有限公司 一种新型涂料研磨机

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AU2014247020A1 (en) 2015-11-19
CA2910729C (en) 2021-05-18
NZ713858A (en) 2019-12-20
WO2014162011A1 (de) 2014-10-09
CA2910729A1 (en) 2014-10-09
EP2981360A1 (de) 2016-02-10
CL2015002953A1 (es) 2016-06-24
CN105555407A (zh) 2016-05-04
US20160129450A1 (en) 2016-05-12
DE102013005943A1 (de) 2014-10-09
US9908120B2 (en) 2018-03-06
ZA201507356B (en) 2017-03-29
CN105555407B (zh) 2018-02-02
AU2014247020B2 (en) 2018-10-25

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