CN210357385U - Calcium oxide finished product vertical mill - Google Patents

Calcium oxide finished product vertical mill Download PDF

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Publication number
CN210357385U
CN210357385U CN201920754848.1U CN201920754848U CN210357385U CN 210357385 U CN210357385 U CN 210357385U CN 201920754848 U CN201920754848 U CN 201920754848U CN 210357385 U CN210357385 U CN 210357385U
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CN
China
Prior art keywords
mill
casing
calcium oxide
finished product
shell
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Expired - Fee Related
Application number
CN201920754848.1U
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Chinese (zh)
Inventor
刘国福
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Jiangsu Huaye Calcium Industry Co ltd
Original Assignee
Jiangsu Huaye Calcium Industry Co ltd
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Priority to CN201920754848.1U priority Critical patent/CN210357385U/en
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Publication of CN210357385U publication Critical patent/CN210357385U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model belongs to the technical field of ore grinding equipment technique and specifically relates to a calcium oxide finished product founds mill is related to, including the mill casing, supreme mill, grinding roller, the separator of being equipped with in proper order down in the mill casing, the outer bottom of mill casing is equipped with frame and mill drive arrangement, and the separator includes the main shaft, and the main shaft bottom is connected with the rotor. The annular plate driving mechanism drives the annular plate to rotate, so that all the grid plates are driven to synchronously rotate, the width of an airflow channel enclosed by adjacent grid plates can be changed, when the airflow channel is widened, the airflow speed flowing to the air outlet through the airflow channel is slowed down, and therefore finer particles carried in the airflow can be sucked out of the vertical mill, namely the particle size of the finished product particles is thinned; the production cost is reduced because expensive speed regulating motors are not required to be purchased.

Description

Calcium oxide finished product vertical mill
Technical Field
The utility model belongs to the technical field of ore grinding equipment technique and specifically relates to a calcium oxide finished product founds mill is related to.
Background
The vertical mill is a grinding device integrating fine crushing, drying, grinding, powder selecting and conveying, and is widely used for grinding and superfine grinding of various solid materials in the industries of cement, building materials, electric power, metallurgy, chemical industry, non-metal ores and the like.
The working principle of the vertical mill is as follows: the motor drives the millstone to rotate through the vertical speed reducer, the solid raw material enters the center of the millstone from the feed inlet through the air locking feeding device, is thrown to the periphery of the millstone under the action of a centrifugal force field and is crushed by repeated grinding of the grinding roller; the crushed material overflows from the edge of the grinding disc, the powdery material in the crushed material is carried by high-speed airflow rising from the lower part of the machine, when the rising airflow and the powdery material pass through a powder separator on the upper part of the grinding machine, under the action of a rotor rotating rapidly, coarse powder is separated out and falls into the center of the grinding disc for grinding again, fine powder is discharged from the upper part of the grinding machine along with the airflow and is collected in a dust collection device, and the product is obtained; granular materials which are not taken away by the airflow overflow the millstone and then return to the feeding port of the mill by the bucket elevator of the external circulation, and enter the mill together with the newly fed raw materials for grinding again; for the material with higher moisture content, hot air is introduced into the mill, and the wet material is fully contacted with hot air flow in the processes of grinding, selecting powder and flowing to be dried, so that the moisture requirement of the product is met.
The invention discloses a low-speed large-torque permanent magnet motor direct-drive powder concentrator with a publication number of CN102716855A, which comprises a shell, wherein a rotating cage is arranged in the center of the shell, air guide blades are arranged on the outer side of the rotating cage, a rotating cage main shaft is arranged in the center of the rotating cage, the rotating cage rotates to generate an ascending air flow to bring ground materials into the powder concentrator, after twice sorting, unqualified materials fall back to a grinding disc, and qualified materials are discharged from an air outlet. The powder concentrator of the vertical mill can only adjust the rotating speed of the main shaft of the rotating cage to adjust the particle size of the qualified materials: the lower the rotating speed of the main shaft of the rotating cage is, the weaker the ascending airflow generated by the rotation of the rotating cage is, and the lighter and smaller materials can be sucked out of the air outlet; on the contrary, the higher the rotating speed of the main shaft of the rotating cage is, the stronger the ascending airflow generated by the rotation of the rotating cage is, and the heavier materials can be sucked out of the air outlet. And the more expensive speed regulating motor is needed for regulating the rotating speed of the main shaft of the rotating cage, so that the production cost is increased undoubtedly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a calcium oxide finished product founds mill, its advantage that has reduction in production cost.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a calcium oxide finished product vertical mill comprises a mill shell, wherein a mill disc, a mill roller and a separator are sequentially arranged in the mill shell from bottom to top, a base and a mill disc driving device are arranged at the bottom outside the mill shell, the separator comprises a main shaft, a rotor is connected to the bottom end of the main shaft, a plurality of blades are uniformly fixed on the periphery of the rotor, the separator also comprises a conical hopper, the conical hopper is positioned under the rotor and coaxial with the rotor, a plurality of circular grooves are uniformly arranged on the periphery of the top of the conical hopper, a rotatable rotating shaft is arranged in each circular groove in a matched mode, the rotating shaft is parallel to the main shaft, a grid plate is fixed on each rotating shaft, all grid plates are arranged around the blades, the distances of corresponding positions of two adjacent grid plates are the same, a connecting rod is vertically fixed on the top of each rotating shaft, an annular plate is arranged on the top, an annular plate driving mechanism is also arranged in the mill shell.
By adopting the technical scheme, the annular plate is driven to rotate by the annular plate driving mechanism, so that all the grid plates are driven to synchronously rotate, and the width of the airflow channel surrounded by the adjacent grid plates can be changed. When the airflow channel is narrowed, the airflow flowing to the air outlet (i.e. the finished powder outlet) through the airflow channel is accelerated in flow speed, so that coarser powder particles carried in the airflow can be sucked out of the vertical mill, i.e. the particle size of the finished powder particles is coarsened; when the airflow channel is widened, the airflow flowing to the air outlet through the airflow channel is slowed down, so that finer particles entrained in the airflow can be sucked out of the vertical mill, i.e. the particle size of the finished particles is thinned. The production cost is reduced because expensive speed regulating motors are not required to be purchased.
Preferably, the clamping groove is formed in the lower surface of the annular plate and communicated with the inner circle of the annular plate.
By adopting the technical scheme, when the connecting rods are clamped in the clamping grooves, all the connecting rods support the annular plate, so that a structure for supporting the annular plate is not required to be additionally arranged on the inner wall of the shell of the mill shell.
Preferably, the annular plate driving mechanism comprises a first motor, a gear, a worm wheel and a worm, the gear is rotatably arranged in the mill shell, the worm wheel and the gear are coaxially fixed, the first motor is fixed on the outer wall of the mill shell, the first motor is in driving connection with the worm, the worm penetrates through the mill shell and is meshed with the worm wheel, tooth grooves are formed in the peripheral edge of the annular plate, and the gear is meshed with the tooth grooves.
By adopting the technical scheme, when the first motor drives the worm to rotate, the worm drives the worm wheel and the gear to rotate together, so that the gear drives the annular plate to rotate.
Preferably, the mill shell comprises a lower shell, a middle shell and an upper shell which are sequentially connected from bottom to top, the lower shell is fixed at the top of the stand, the grinding disc is arranged in the lower shell, the lower shell and the grinding disc surround an annular air duct, an air ring for air outlet is arranged at the edge of the grinding disc, a discharge hole is formed in the upper surface of the base, and the discharge hole is communicated with the annular air duct.
By adopting the technical scheme, the calcium oxide material falls in the center of the grinding disc, when the grinding disc rotates, the calcium oxide material moves to the edge of the grinding disc under the action of centrifugal force, and finer particles are blown up by upward warm air at the annular air duct and then sucked out of the vertical grinding machine by negative pressure at the air outlet; the coarse powder particles fall into the annular air duct, when the powder particles in the annular air duct accumulate to a certain amount, the powder particles are discharged from the discharge port, and the discharged powder particles enter the vertical mill again through the feed port.
Preferably, the lower shell is provided with a warm air inlet which is communicated with the annular air duct.
Through adopting above-mentioned technical scheme, from the warm braw entry to the annular wind channel in the drum hot-blast, can dry the calcium oxide material, reduce the humidity of calcium oxide material.
Preferably, a feed inlet is formed in the middle shell, a chute is fixed in the feed inlet, and the bottom end of the chute points to the center of the grinding disc.
By adopting the technical scheme, the calcium oxide material can accurately slide to the center of the grinding disc.
Preferably, the upper shell is provided with an air outlet, the rotor is arranged in the upper shell, the air outlet points to the rotor, the outer wall of the upper shell is fixed with a second motor, and the second motor drives the main shaft to rotate through a belt wheel mechanism.
By adopting the technical scheme, the air outlet points to the rotor, so that the air flow sucked out of the air outlet can pass through the center of the rotor (namely the center of the array of all the blades), coarser powder particles in the air flow are sieved, and the particle size of finished powder particles is thinned.
Preferably, the middle shell is provided with an inspection window, the inspection window is detachably connected with a sealing plate, the sealing plate is provided with a square window, the base is hinged with a crank, the crank is connected with a rocker arm, the rocker arm is connected with a roll shaft, and the grinding roller is arranged on the roll shaft; the roll shaft is further fixedly provided with a sealing shell, four side faces of the sealing shell are respectively matched with four sides of the square window, the side face of the sealing plate facing the middle shell is provided with a corrugated pipe, the corrugated pipe is connected with the four side faces of the sealing shell in a seamless mode, and the roll shaft penetrates through the corrugated pipe.
Through adopting above-mentioned technical scheme, utilize the bellows to seal the fit clearance of closing plate and square window, have the advantage of leak protection material.
To sum up, the utility model discloses a beneficial technological effect does:
1. the annular plate driving mechanism drives the annular plate to rotate, so that all the grid plates are driven to synchronously rotate, the width of an airflow channel surrounded by adjacent grid plates can be changed, when the airflow channel is narrowed, the flow velocity of airflow flowing to an air outlet (namely a finished powder outlet) through the airflow channel is accelerated, and coarse powder particles carried in the airflow can be sucked out of the vertical mill, namely the particle size of the finished powder particles is thickened; when the airflow channel is widened, the airflow flowing to the air outlet through the airflow channel is slowed down, so that finer particles carried in the airflow can be sucked out of the vertical mill, i.e. the particle size of the finished particles is thinned;
2. because the air outlet points to the rotor, the air flow sucked out of the air outlet can pass through the center of the rotor (namely the center of the array of all the blades), so that coarser powder particles in the air flow are screened out, and the particle size of finished powder particles is thinned.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a calcium oxide finished product vertical mill;
FIG. 2 is a front view of a calcium oxide finished product vertical mill;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of a calcium oxide finished product vertical mill with a hidden middle shell;
FIG. 5 is a schematic view of the hidden lower case of FIG. 4;
FIG. 6 is a schematic view of the structure of the sealing plate;
FIG. 7 is a schematic structural view of a separator;
FIG. 8 is a schematic view of the bottom structure of the separator;
fig. 9 is an enlarged view of a portion a in fig. 8.
In the figure, 1, a machine base; 2. a mill housing; 3. a grinding disc; 4. grinding the roller; 5. a separator; 51. a conical hopper; 51a, a circular groove; 52. a main shaft; 53. a rotor; 54. a blade; 6. a rotating shaft; 7. a grid plate; 8. a connecting rod; 9. an annular plate; 9a, a clamping groove; 9b, a tooth groove; 10. a first motor; 11. a gear; 12. a worm gear; 13. a worm; 14. a lower housing; 15. a middle housing; 15a, an access window; 16. an upper housing; 17. an annular air duct; 18. a wind ring; 19. a discharge port; 20. a warm air inlet; 21. a feed inlet; 22. a chute; 23. an air outlet; 24. a second motor; 25. a pulley mechanism; 26. a sealing plate; 26a, a square window; 27. a bearing; 28. a crank; 29. a rocker arm; 30. a roll shaft; 31. sealing the housing; 32. a bellows; 33. a third motor; 34. and a speed reducer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): fig. 1 is a vertical mill for calcium oxide finished products, which comprises a mill housing 2.
As shown in fig. 3, a grinding disc 3, a grinding roller 4 and a separator 5 are sequentially arranged in the mill housing 2 from bottom to top, a base 1 and a speed reducer 34 are arranged at the bottom outside the mill housing 3, an output shaft of the speed reducer 34 is coaxially connected with the grinding disc 3, and an input shaft of the speed reducer 34 is connected with a third motor 33 (see fig. 1).
As shown in fig. 1, the mill casing 2 is composed of a lower casing 14, an intermediate casing 15, and an upper casing 16, which are connected in this order from bottom to top. The lower shell 14 is fixed on the top of the machine base 1, the grinding disc 3 is arranged in the lower shell 14, and the lower shell 14 and the grinding disc 3 enclose an annular air duct 17 (see fig. 3).
As shown in fig. 4, the edge of the grinding disc 3 is provided with an air ring 18 for air outlet; as shown in fig. 5, the upper surface of the machine base 1 is provided with a discharge port 19, and the discharge port 19 is communicated with the annular air duct 17.
As shown in fig. 1, a warm air inlet 20 is provided on the lower casing 14, the warm air inlet 20 is used for connecting a hot air pipe, and the warm air inlet 20 is communicated with the annular air duct 17. Hot air is blown into the annular air duct 17 from the warm air inlet 20, so that the calcium oxide material can be dried, and the humidity of the calcium oxide material is reduced.
As shown in fig. 1, a feed inlet 21 is provided on the middle housing 15, a chute 22 (see fig. 4 in detail) is fixed in the feed inlet 21, the bottom end of the chute 22 points to the center of the grinding disc 3, and the calcium oxide material poured into the feed inlet 21 can slide to the center of the grinding disc 3. The middle shell 15 is further provided with two symmetrical maintenance windows 15a, the maintenance windows 15a are detachably connected with sealing plates 26 through bolts, and the sealing plates 26 are provided with square windows 26a (see fig. 6).
As shown in FIG. 3, a crank 28 is hinged on the machine base 1, a rocker arm 29 is connected on the crank 28, a roller shaft 30 is connected on the rocker arm 29, a grinding roller 4 is arranged on the roller shaft 30 in a penetrating way, and a sealing shell 31 is fixed on the roller shaft. Four side surfaces of the seal housing 31 are respectively fitted to four sides of the square window 26a, a bellows 32 is seamlessly connected to a side surface of the seal plate 26 facing the inside of the intermediate housing 15, the bellows 32 is seamlessly connected to the four side surfaces of the seal housing 31, and the roller shaft 30 is inserted into the bellows 32. The bellows 32 is used to close the fit gap between the sealing housing 31 and the square window 26a to prevent leakage.
As shown in fig. 3, the separator 5 is disposed in the upper housing 16, the separator 5 is composed of a conical hopper 51, a main shaft 52, a rotor 53 and a plurality of blades 54, the rotor 53 is coaxially fixed at the bottom end of the main shaft 52, the conical hopper 51 is located right below the rotor 53 and is coaxial with the rotor 53, and the plurality of blades 54 are uniformly fixed around the rotor 53. A bearing seat is fixed on the top of the upper shell 16, a main shaft 52 penetrates through the bearing seat, and the main shaft 52 is coaxial with the grinding disc 3.
As shown in fig. 1, a second motor 24 is fixed on the top outer wall of the upper housing 16, and the second motor 24 drives the main shaft 52 to rotate through a pulley mechanism 25. The upper housing 16 is further provided with an air outlet 23 (i.e., a finished powder outlet) near the spindle 52, the air outlet 23 is directed to the rotor 53, and the air flow sucked out of the air outlet 23 can pass through the center of the rotor 53 (i.e., the center of the array of all the blades 54), so that coarser powder particles in the air flow are sieved down, and the particle size of the finished powder particles is reduced.
As shown in fig. 7, a plurality of circular grooves 51a are uniformly formed around the top of the conical hopper 51, a rotatable shaft 6 is fittingly inserted into each circular groove 51a, and the shaft 6 is parallel to the main shaft 52. Every pivot 6 is last all to be fixed with grid tray 7, and all grid trays 7 set up around blade 54, and the distance that two adjacent grid trays 7 correspond the position is all the same, and every pivot 6 top all vertical fixation has connecting rod 8, and grid tray 7 top is equipped with annular plate 9.
As shown in fig. 9, a plurality of slots 9a are uniformly formed in the lower surface of the annular plate 9 (the slots 9a do not extend to the upper surface of the annular plate 9), the slots 9a communicate with the inner circle of the annular plate 9, the free end of the connecting rod 8 is rotatably clamped in the slots 9a, and the slots 9a and the connecting rod 8 have a certain fit clearance to prevent locking.
As shown in fig. 9, a bearing 27 is fixed on the inner wall of the mill housing 2, a worm wheel 12 is coaxially fixed on the upper surface of the bearing 27, a gear 11 is coaxially fixed with the worm wheel 12, and the worm wheel 12 and the gear 11 can integrally rotate. A first motor 10 is fixed on the outer wall of the mill shell 2, a worm 13 is coaxially connected to a rotating shaft of the first motor 10, the worm 13 penetrates through the mill shell 2 to be meshed with a worm wheel 12, tooth grooves 9b are formed in the peripheral edge of the annular plate 9, and the gear 11 is meshed with the tooth grooves 9 b.
The implementation principle of the embodiment is as follows: calcium oxide materials are poured into the vertical mill from a feeding hole 21, the calcium oxide materials slide in the center of the grinding disc 3 along a chute 22, when the grinding disc 3 rotates, the calcium oxide materials move to the edge of the grinding disc 3 under the action of centrifugal force, and fine particles are blown up by upward warm air at the annular air duct 17 and then sucked out of the vertical mill by negative pressure at an air outlet 23; coarser powder particles fall into the annular air duct 17, when the powder particles in the annular air duct 17 accumulate to a certain amount, the powder particles are discharged from the discharge port 19, and the discharged powder particles enter the vertical mill again through the feed port 21.
When the first motor 10 drives the worm 13 to rotate, the worm 13 drives the worm wheel 12 to rotate together with the gear 11, so that the gear 11 drives the annular plate 9 to rotate, all the grid plates 7 are driven to synchronously rotate, and the width of the airflow channel enclosed by the adjacent grid plates 7 can be changed. When the airflow channel is narrowed, the airflow flowing to the air outlet 23 (i.e. the finished powder outlet) through the airflow channel is accelerated in flow speed, so that coarser powder particles carried in the airflow can be sucked out of the vertical mill, i.e. the particle size of the finished powder particles becomes coarse; when the airflow channel is widened, the airflow flowing to the air outlet 23 through the airflow channel is slowed down, so that finer particles entrained in the airflow can be sucked out of the vertical mill, i.e. the particle size of the finished particles is thinned. The production cost is reduced because expensive speed regulating motors are not required to be purchased.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a calcium oxide finished product founds mill, includes mill casing (2), follows supreme mill (3), grinding roller (4), separator (5) of being equipped with in proper order down in mill casing (2), and the outer bottom of mill casing (2) is equipped with frame (1) and mill drive arrangement, and separator (5) are including main shaft (52), and main shaft (52) bottom is connected with rotor (53), and rotor (53) evenly are fixed with a plurality of blades (54) all around, its characterized in that: separator (5) still include the toper fill (51), toper fill (51) are located under rotor (53) and coaxial with rotor (53), toper fill (51) top evenly is equipped with a plurality of circular slots (51 a) all around, all the cooperation is equipped with rotatable pivot (6) in every circular slot (51 a), pivot (6) are parallel with main shaft (52), all be fixed with grid tray (7) on every pivot (6), all grid tray (7) set up around blade (54), the distance that two adjacent grid tray (7) correspond the position is the homogeneous phase, every pivot (6) top homogeneous phase is fixed with connecting rod (8), grid tray (7) top is equipped with annular plate (9), evenly be equipped with a plurality of draw-in grooves (9 a) on annular plate (9), the free end of connecting rod (8) rotatably blocks in draw-in groove (9 a), still be equipped with annular plate actuating mechanism in mill casing (2).
2. The calcium oxide finished product vertical mill of claim 1, wherein: the clamping groove (9 a) is formed in the lower surface of the annular plate (9), and the clamping groove (9 a) is communicated with the inner circle of the annular plate (9).
3. The calcium oxide finished product vertical mill of claim 1, wherein: annular plate actuating mechanism includes first motor (10), gear (11), worm wheel (12) and worm (13), in mill casing (2) is rotatably located in gear (11), worm wheel (12) and gear (11) coaxial fixed, first motor (10) are fixed in on mill casing (2) outer wall, worm (13) are connected in first motor (10) drive, worm (13) run through mill casing (2) and worm wheel (12) meshing, the peripheral edge shaping of annular plate (9) has tooth's socket (9 b), gear (11) and tooth's socket (9 b) meshing.
4. The calcium oxide finished product vertical mill of claim 1, wherein: mill casing (2) include from supreme lower casing (14), middle casing (15), the last casing (16) that connect gradually down, lower casing (14) are fixed in frame (1) top, and casing (14) are located down in, and lower casing (14) and mill (3) enclose into annular wind channel (17), and mill (3) edge is equipped with wind ring (18) that are used for the air-out, and the base upper surface is equipped with discharge gate (19), and discharge gate (19) communicate with each other with annular wind channel (17).
5. The calcium oxide finished product vertical mill according to claim 4, characterized in that: the lower shell (14) is provided with a warm air inlet (20), and the warm air inlet (20) is communicated with the annular air duct (17).
6. The calcium oxide finished product vertical mill according to claim 4, characterized in that: a feed inlet (21) is formed in the middle shell (15), a chute (22) is fixed in the feed inlet (21), and the bottom end of the chute (22) points to the center of the grinding disc (3).
7. The calcium oxide finished product vertical mill according to claim 4, characterized in that: the air outlet (23) is formed in the upper shell (16), the rotor (53) is arranged in the upper shell (16), the air outlet (23) points to the rotor (53), the second motor (24) is fixed on the outer wall of the upper shell (16), and the second motor (24) drives the main shaft (52) to rotate through the belt wheel mechanism (25).
8. The calcium oxide finished product vertical mill according to claim 4, characterized in that: an overhaul window (15 a) is arranged on the middle shell (15), a sealing plate (26) is detachably connected to the overhaul window (15 a), a square window (26 a) is arranged on the sealing plate (26), a crank (28) is hinged to the machine base (1), a rocker arm (29) is connected to the crank (28), a roll shaft (30) is connected to the rocker arm (29), and the grinding roller (4) is arranged on the roll shaft (30); a sealing shell (31) is further fixed on the roll shaft (30), four side faces of the sealing shell (31) are respectively matched with four sides of the square window (26 a), corrugated pipes (32) are arranged on the side faces, facing the middle shell (15), of the sealing plate (26), the corrugated pipes (32) are connected with the four side faces of the sealing shell (31) in a seamless mode, and the roll shaft (30) penetrates through the corrugated pipes (32).
CN201920754848.1U 2019-05-23 2019-05-23 Calcium oxide finished product vertical mill Expired - Fee Related CN210357385U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920754848.1U CN210357385U (en) 2019-05-23 2019-05-23 Calcium oxide finished product vertical mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920754848.1U CN210357385U (en) 2019-05-23 2019-05-23 Calcium oxide finished product vertical mill

Publications (1)

Publication Number Publication Date
CN210357385U true CN210357385U (en) 2020-04-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113000133A (en) * 2021-03-03 2021-06-22 西安建筑科技大学 Stripping and grinding machine for separating iron particles and silicate minerals in steel slag and using method thereof
CN116851128A (en) * 2023-06-19 2023-10-10 唐山冀东发展机械设备制造有限公司 Wear detection method and device for vertical grinding roller grinding disc coal mill

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113000133A (en) * 2021-03-03 2021-06-22 西安建筑科技大学 Stripping and grinding machine for separating iron particles and silicate minerals in steel slag and using method thereof
CN113000133B (en) * 2021-03-03 2021-11-23 西安建筑科技大学 Stripping and grinding machine for separating iron particles and silicate minerals in steel slag and using method thereof
CN116851128A (en) * 2023-06-19 2023-10-10 唐山冀东发展机械设备制造有限公司 Wear detection method and device for vertical grinding roller grinding disc coal mill
CN116851128B (en) * 2023-06-19 2024-02-13 唐山冀东发展机械设备制造有限公司 Wear detection method and device for vertical grinding roller grinding disc coal mill

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Granted publication date: 20200421