AU620600B2 - Apparatus and method of breaking pieces of solid mineral material in fragments, and method of sorting fragments of solid mineral material according to size - Google Patents
Apparatus and method of breaking pieces of solid mineral material in fragments, and method of sorting fragments of solid mineral material according to size Download PDFInfo
- Publication number
- AU620600B2 AU620600B2 AU32527/89A AU3252789A AU620600B2 AU 620600 B2 AU620600 B2 AU 620600B2 AU 32527/89 A AU32527/89 A AU 32527/89A AU 3252789 A AU3252789 A AU 3252789A AU 620600 B2 AU620600 B2 AU 620600B2
- Authority
- AU
- Australia
- Prior art keywords
- mineral material
- fragments
- solid mineral
- pieces
- breaking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
- B04B3/06—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles by vibrating the bowl
-
- 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
- B02C19/16—Mills provided with vibrators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
- B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
- B02C13/1835—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
- B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
- B02C2013/1885—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate of dead bed type
Abstract
A centrifugal breaking apparatus is constructed so that for having an effect on the breaking function, the pieces of solid mineral material are thrown from the axle of the rotor, when rotating at an increased speed, in tangential directions, through the radial outlets of the rotor by centrifugal force to strike against the "dead bed" of fragments of solid mineral material which encircles the rotor, then fragments are reduced by vibrating the "dead bed".
Description
ulI-icu dti Japan U113 ell d ki il CL V_ I I 'F Z OKUHARA, Seiichiro Signature of Declarant(s) L SFP4 To: The Commissioner of Patents now P1 01 620600 S F Ref: 91164 FORM COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION
(ORIGINAL)
FOR OFFICE USE: Class Int Class Complete Specification Lodged: Accepted: Published: P o t Priority: Related Art: Name and Address of Applicant: Address for Service: Kotobuki Engineering Manufacturing Co., Ltd.
2-6-2, Ohtemachi Chiyoda-ku Tokyo 100
JAPAN
Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Wales, 2000, Australia Complete Specification for the invention entitled: Apparatus and Method of Breaking Pieces of Solid Mineral Material in Fragments, and Method of Sorting Fragments of Solid Mineral Material According to Size The following statement is a full description of this invention, including the best method of performing it known to me/us 1-YSa1 5845/3 N (Sl-12KS) Specification Title of the Invention Apparatus and Method of Breaking Pieces of Solid Mineral Material in Fragments, and Method of Sorting Fragments of Solid Mineral Material According to Size.
Background of the Invention Field of the Invention o' The present invention relates to. apparatus and \oo0 method of breaking pieces of solid mineral material by feeding pieces of solid mineral material along the axle of a rotor and rotating said rotor at an increased °oa speed to throw said piece's of solid mineral material from the redial outlets of said rotor in tangential directions to cause said pieces of solid mineral material to strike against the "dead bed" of fragments of solid mineral material which encircles said rotor and cause said pieces of solid mineral material to o reduce to fragments, and method of sorting resulting fragments of solid mineral material according to size.
Description of the Prior Art In a conventional method of breaking pieces of solid mineral material into fragments, fragments of solid mineral material is heaped up to encircle a rotor, and the rotor is made to rotate to throw pieces of solid mineral material to the heap or "dead bed" of fragments. Then, these pieces of solid mineral
-I
1 'I 1 (Sl-12KS) material strike the "dead bed" to reduce to fragments, which are allowed to fall from the space between the rotor and the breaking chamber. After leaving the lower part of the breaking apparatus the fragments of solid mineral material are sorted according to size.
The breaking force available in such a breaking apparatus will depend on the force with which pieces of solid mineral material can strike against the "dead bed", and as a matter of course, the breaking effect increases with the striking force. The "dead bed", r however, will be co'vered thick with fragments of relatively small size because collision takes place on the surface of the "dead bed". Therefore, pieces of solid mineral material when thrown at the "dead bed" S are likely to land soft on the "dead bed", thereby causing thrown pieces of 'solid mineral material to lose oo their kinetic energy, which otherwise, would be used to break pieces of solid mineral material into fragments.
Also, disadvantageously fragments of different sizes are mixed, and therefore, subsequent screening is necessitated.
oa 4 Summary of the Invention With the above in mind one object of the present invention is to provide solid mineral material breaking apparatus and method which can make full use of the kinetic energy of thrown pieces of mineral material in breaking themselves in fragments, thereby substantially 4 -2 i 3 increasing the breaking efficiency. Another object of the present invention is to provide a method of sorting fragments of solid mineral material according to size.
According to a first aspect of the present invention there is provided a centrifugal breaking apparatus including, in a breaking chamber, an accelerating hollow rotor and a hopper arranged to supply pieces of solid mineral material into and along the longitudinal axis of said rotor, thereby permitting said rotor when rotating at an increased speed to throw said pieces of solid mineral material from radial outlets incorporated in said rotor in tangential directions to cause said pieces of solid mineral material to strike against the "dead bed" of fragments of solid mineral material which encircles said rotor and cause said pieces of solid mineral material to reduce to fragments, characterised in 0 that a support box and vibrator is operatively associated with the "dead S 15 bed" in the breaking chamber surround the rotor, and the floor of said breaking chamber which is isolated from a frame structure is designed to allow pieces of said mineral material to be separated under the influence of vibration, said pieces of solid mineral material are accumulated in said support box so as to form a "dead bed" of fragments of solid mineral :0 20 material subjected to vibration when said support box is vibrated, and said centrifugal breaking apparatus further comprises a separator plate 0 vertically provided on the course on which said fragments of solid mineral material fall from said "dead bed", whereby said falling fragments of solid mineral material are sorted according to the size.
According to a second aspect of the present invention there is provided such a centrifugal breaking apparatus which has a frame structure isolated from the breaking chamber, but still supporting the breaking chamber so as to permit the vibration of the breaking chamber as separate from the frame structure. According to a third aspect of the present invention there is provided such a centrifugal breaking apparatus which has upper and lower frame sections and that the upper frame section has a breaking chamber formed therein.
IA, IAQ- 3 82o ~r -j (Sl-12KS) According to a fourth aspect of the present invention there is provided such a centrifugal breaking apparatus which has a vibrating frame structure and a vibrator, said vibrator along with a rotor drive motor being connected to the frame structure.
According to a fifth aspect of the present invention there is provided a method of breaking pieces of solid mineral material by feeding pieces of solid mineral material along the axle of a rotor and rotating 0 0 So said rotor at an increased speed to throw said pieces o of solid mineral material from the radial outlets of o said rotor in tangential directions to cause said .0 pieces of solid mineral material to strike against the "dead bed" of fragments of solid mineral material which encircles said rotor and cause said pieces of solid 0 o mineral material to reduce to fragments, characterized 0 .0 in that said "dead bed" of fragments of solid mineral material is subjected to vibration. In the breaking o.<o apparatus and method just described, the "dead bed" is subjected to vibration to cause fragments of relatively large size to come up on the surface of the "dead bed", and therefore, pieces of solid mineral material when thrown to the "dead bed", will strike against relatively large fragments on the surface of the "dead bed" so that the kinetic energy of the flying pieces of solid mineral material may be fully used in breaking themselves into fragments. Thus, the breaking efficiency will be substantially increased.
I i 4(_ (S1 -12 K S) According to a sixth aspect of the'present invention there is provided a fragment-sorting method in combination with such a breaking method just described in which fragment-sorting method a separator plate is provided on the course on which fragments of solid mineral material fall from the "dead bed", and when the "dead bed" is subjected to vibration, fragments of relatively large size will come up on the surface of the "dead bed" to permit these fragments of relatively large size to fall inside and fragments of relati'vely small size to fall outside of the separator plate. Finally, according to a seventh aspect of the present invention there is provided a fragment-sorting method in combination with such a breaking method as described above in which fragmentsorting method an outlet is provided in the vicinity of the "dead bed", and when the "dead bed" is subjected to vibration, fragments of relatively large size will |i come up on the surface of the "dead bed" to leave fragments of relatively small size inside and fall from the outlet. In the fragment-sorting method just described, fragments of relatively large size which come up on the surface of the "dead bed" as a result of vibration, will be automatically selected and removed as separate from fragments of relatively small size, which are left inside the "dead bed" as a result of the vibration.
Other objects and advantages of 'the present invention will be understood from the following description of a breaking apparatus according to one embodiment of the present invention, which is shown in the accompanying drawings: (Sl-17KS) Fig. 1 is a longitudinal section of a breaking apparatus according to one embodiment of the present invention; and Fig. 2 is a graphic representation showing the distribution of fragment sizes in a conventional breaking method and a breaking method using vibration of the "dead bed" according to the present invention.
Fig. 1 shows a centrifugal breaking apparatus according to one embodiment of the present invention as including a rotor 1 in a breaking chamber 2. The rotor 1 is designed to be driven at an increased speed by an associated motor (not shown). A hopper is arranged above the rotor 1 to supply pieces of solid mineral material along the axle of the rotor, thereby permitting the rotor 1 when rotating at an increased speed to throw pieces of solid mineral material from its radial outlets in tangential directions to cause pieces of solid mineral material to strike against the "dead bed" 3 of fragments of solid mineral material which encircles the rotor i. Then, the pieces of solid mineral material reduce to fragments.
As shown, the centrifugal breaking apparatus has lower and upper frame sections 6a and 6b coupled.
together. The breaking chamber 2 is built in the upper frame section 6b. The hopper (not shown) is connected to the top of the upper frame section 6b to supply pieces of solid mineral material along the axle of the rotor 1 as described above. The lower frame section 6a has an outlet 11 at the center of the bottom of the lower frame section, an annular opening 12 encircling the outlet 11 and a chute 13 to collect fragments of -6- [i j solid mineral material falling from the annular opening 12.
As shown, the breaking chamber 2 of the upper frame section 6b is open at its bottom floor, and the opening of the bottom floor is encircled by a cylindrical wall. The breaking chamber 2 has an annular support box 4 connected to its undersurface. The annular support box 4 is resiliently supported by spring 15 as indicated at the lower frame section 6a, thus preventing transmission of vibration to the lower frame section 6a. The support box 4 is connected to a vibrator 5, which comprises a motor and an associated eccentric cam to vibrate the "dead bed" vertically. The support box 4 is also connected to the upper and lower frame sections 6b and 6a by flexible material such as rubber plates 7, thereby permitting the vertical vibration of the annular box 4.
The lower frame section 6a has a cylindrical separator 8 arranged coaxial with the lower frame section. When the support box 4 vibrates, fragments of relatively large size come up on the surface of the "dead bed" I to fall inside the cylindrical separator 8 whereas fragments of relatively small size fall between the cylindrical separator 8 and the lower frame Ssection 6. Then, the fragments of relatively large size are ejected from I the exit 11 of the breaking system whereas the fragments of relatively small size are ejected from the chute 13.
Fig. 2 shows the relationship between the fragment size and the proportion of fragments of different sizes. Curve 1 shows the result of a conventional centrifugal JEDI279P i JED/0279P (SI-17KS) breaking system using no vibration whereas curves 2 shows the results of a centrifugal breaking system using vibration according to the present invention.
T.uff having been supplied to the rotor which is shown in curve 3. Particulars of the experiments are as follows: Feeding rate of pieces of solid mineral material Circumferential speed of the rotor Amplitude of the vibration of the support box 2, o Frequency of vibration 58Hz 3 As seen from Fig. 2, the rate of fragments of O relatively small size is large in a centrifugal .a c' breaking apparatus using vibration according to the S0 present -invention, compared with a conventional centrifugal breaking apparatus using no vibration.
This shows that pieces of' solid mineral material reduce to fragments at an increased efficiency in the centrifugal breaking apparatus using vibration 0 according to the present invention.
This particular embodiment uses a cylindrical separator to separate fragments of solid mineral material according to size. In place of the cylindrical separator, however, an outlet may be provided.to the support box or the side wall of the breaking chamber to allow fragments of relatively small size to leave the "dead bed" while fragments of relatively large size slide and roll on the slant of the "dead bed" to fall in the center hollow space of the centrifugal breaking apparatus. If occasions demand, a net may be applied to the outlet of the breaking apparatus, thereby screening fragments of solid mineral material.
-8- I o 1-j I~lllllla~--~lll-UIIY-UII~. (S1-17KS) This particular embodiment uses a support box as vibrating means. Alternatively the breaking chamber, the upper frame section having a braking chamber, or the framework itself may be designed to vibrate. When the framework is designed to vibrate as a whole, a motor for driving the rotor is fixed to the framework so as to vibrate together while rotating the rotor.
#1 9 0 ~it a, o Q o
'I
ES p9 04 0 4 .0 0 o l .4 .4 41 4 0.4.1i .4w 04 0 C? 4 II>0.
4 4f 44 ti -9-
Claims (4)
1. A centrifugal breaking apparatus including, in a breaking chamber, an accelerating hollow rotor and a hopper arranged to supply pieces of solid mineral material into and along the longitudinal axis of said rotor, thereby permitting said rotor when rotating at an increased speed to throw said pieces of solid mineral material from radial outlets incorporated in said rotor in tangential directions to cause said pieces of solid mineral material to strike against the "dead bed" of fragments of solid mineral material which encircles said rotor and cause said pieces of solid mineral material to reduce to fragments, characterised in that a support box and vibrator is operatively associated with the "dead bed" in the breaking chamber surround the rotor, and the floor of said breaking chamber which is isolated from a frame structure is designed to allow pieces of said mineral material to be separated under the influence of vibration, said pieces of solid mineral material are accumulated in i said support box so as to form a "dead bed" of fragments of solid mineral material subjected to vibration when said support box is vibrated, and said centrifugal breaking apparatus further comprises a separator plate vertically provided on the course on which said fragments of solid mineral material fall from said "dead bed", whereby said falling fragments of solid mineral material are sorted according to the size.
2. A method of breaking pieces of solid mineral material using the centrifugal breaking apparatus according to claim 1, characterised in that the "dead bed" of fragments of solid mineral material is subjected to vibration when the support box is vibrated, and fragments of relatively small size are moved to the lower layer of the "dead bed" to permit these fragments of relatively small size to fall inside of the separator plate, and fragments of relatively large size are moved to the upper layer of the "dead bed" to permit these fragments of relatively large size to fall outside of the separator plate, so that said pieces of solid mineral material can be separated according to their particle diameter.
3. Centrifugal breaking apparatus substantially as described herein with reference to the drawing. D 82 D 82o N T 11
4. A method of breaking pieces substantially as described herein with reference to the drawing. DATED this TWENTY-SIXTH day of NOVEMBER 1991 Kotobuki Engineering Manufacturing Co., Ltd. Patent Attorneys for the Applicant SPRUSON FERGUSON o 0 0 i Bi 0 0 0 t. 0 0 0 0 0 0 KA
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63308501A JPH0783837B2 (en) | 1988-12-05 | 1988-12-05 | Centrifugal crusher and its crushing method and crushed piece sorting method |
| JP63-308501 | 1988-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU3252789A AU3252789A (en) | 1990-06-07 |
| AU620600B2 true AU620600B2 (en) | 1992-02-20 |
Family
ID=17981776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU32527/89A Ceased AU620600B2 (en) | 1988-12-05 | 1989-04-06 | Apparatus and method of breaking pieces of solid mineral material in fragments, and method of sorting fragments of solid mineral material according to size |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0372149B1 (en) |
| JP (1) | JPH0783837B2 (en) |
| KR (1) | KR930009716B1 (en) |
| AT (1) | ATE110008T1 (en) |
| AU (1) | AU620600B2 (en) |
| DE (2) | DE372149T1 (en) |
| ES (1) | ES2017447T3 (en) |
| NZ (1) | NZ228547A (en) |
| ZA (1) | ZA893124B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145118A (en) * | 1990-08-29 | 1992-09-08 | Canada Larry D | Centrifugal impactor for crushing rocks |
| CN101745970B (en) * | 2009-12-11 | 2013-02-06 | 武汉理工大学 | Method for preparing reformed ceramic raw material powder and the vibration and reformation device thereof |
| CN108906227B (en) * | 2018-07-05 | 2023-09-19 | 福建南方路面机械股份有限公司 | Vertical shaft type crusher and crushing method thereof |
| CN113289725B (en) * | 2021-05-18 | 2022-09-13 | 华能云南滇东能源有限责任公司 | Environmental protection anthracite processing apparatus |
| CN113399030B (en) * | 2021-06-15 | 2023-06-13 | 南京华云新工程科技有限公司 | Pharmacy is with medicament collection equipment that mills |
| CN114086009B (en) * | 2021-10-26 | 2022-06-21 | 辽宁科技学院 | Hypereutectic aluminum-silicon alloy production device and process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU498906B2 (en) * | 1976-12-24 | 1979-03-29 | Iowa Manufacturing Co. | Impact crusher |
| EP0276848A2 (en) * | 1987-01-30 | 1988-08-03 | Neyrtec Sa | Rotary breaker with protected projection blades |
| AU593401B2 (en) * | 1986-10-30 | 1990-02-08 | Sbm Wageneder Gesellschaft M.B.H. | Impact mill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2808350C2 (en) * | 1978-02-27 | 1983-10-27 | Alb. Klein Kg, 5241 Niederfischbach | Device for preparing mixtures of sand bulbs |
| JPS58186448A (en) * | 1982-04-27 | 1983-10-31 | コトブキ技研工業株式会社 | Method and apparatus for recovering crushed pieces of dead bed of centrifugal crusher |
| NZ213510A (en) * | 1985-09-17 | 1989-02-24 | Barmac Ass Ltd | Mineral breaking by cyclonic action and separation of fines |
-
1988
- 1988-12-05 JP JP63308501A patent/JPH0783837B2/en not_active Expired - Lifetime
-
1989
- 1989-03-15 ES ES89104643T patent/ES2017447T3/en not_active Expired - Lifetime
- 1989-03-15 DE DE198989104643T patent/DE372149T1/en active Pending
- 1989-03-15 AT AT89104643T patent/ATE110008T1/en not_active IP Right Cessation
- 1989-03-15 DE DE68917566T patent/DE68917566T2/en not_active Expired - Fee Related
- 1989-03-15 EP EP89104643A patent/EP0372149B1/en not_active Expired - Lifetime
- 1989-03-30 NZ NZ228547A patent/NZ228547A/en unknown
- 1989-03-31 KR KR1019890002029A patent/KR930009716B1/en not_active IP Right Cessation
- 1989-04-06 AU AU32527/89A patent/AU620600B2/en not_active Ceased
- 1989-04-27 ZA ZA893124A patent/ZA893124B/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU498906B2 (en) * | 1976-12-24 | 1979-03-29 | Iowa Manufacturing Co. | Impact crusher |
| AU593401B2 (en) * | 1986-10-30 | 1990-02-08 | Sbm Wageneder Gesellschaft M.B.H. | Impact mill |
| EP0276848A2 (en) * | 1987-01-30 | 1988-08-03 | Neyrtec Sa | Rotary breaker with protected projection blades |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02152558A (en) | 1990-06-12 |
| JPH0783837B2 (en) | 1995-09-13 |
| DE68917566D1 (en) | 1994-09-22 |
| DE68917566T2 (en) | 1995-01-12 |
| EP0372149B1 (en) | 1994-08-17 |
| ZA893124B (en) | 1989-12-27 |
| ATE110008T1 (en) | 1994-09-15 |
| ES2017447T3 (en) | 1994-10-16 |
| KR900009141A (en) | 1990-07-02 |
| ES2017447A4 (en) | 1991-02-16 |
| DE372149T1 (en) | 1990-12-20 |
| NZ228547A (en) | 1991-12-23 |
| EP0372149A2 (en) | 1990-06-13 |
| AU3252789A (en) | 1990-06-07 |
| KR930009716B1 (en) | 1993-10-09 |
| EP0372149A3 (en) | 1991-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU688367B2 (en) | Eccentric vibrating mill | |
| US3941689A (en) | Apparatus for sorting waste for disposal | |
| CN111420759B (en) | Soft magnetic core grinds and uses ball mill | |
| AU620600B2 (en) | Apparatus and method of breaking pieces of solid mineral material in fragments, and method of sorting fragments of solid mineral material according to size | |
| JPS58186448A (en) | Method and apparatus for recovering crushed pieces of dead bed of centrifugal crusher | |
| US4625921A (en) | Comminuting | |
| CN215743738U (en) | Environment-friendly building waste treatment device | |
| JPH06320112A (en) | Sorting device | |
| CN212284337U (en) | Noise-reduction vertical shaft type impact crushing sand making machine | |
| CN211329537U (en) | Civil engineering construction waste treatment device | |
| CN107694722A (en) | A kind of birotor impact type vertical-spindle hammer crusher and its method of work | |
| KR102088255B1 (en) | Impact crusher having shock absorbing apparatus | |
| US2433872A (en) | Gyratory impact ball mill | |
| JP3189088B2 (en) | Glass crushing equipment and glass crushing method | |
| CN112892833A (en) | Environment-friendly garbage collection device and use method | |
| CN107670812A (en) | A kind of birotor vertical-spindle hammer crusher | |
| CN107716059A (en) | A kind of impact type vertical-spindle hammer crusher | |
| CN216631096U (en) | Vertical shaft crusher with screening and separating functions | |
| CN220635229U (en) | Feeding device for powder cleaning machine | |
| CN213102399U (en) | Building rubbish reducing mechanism | |
| CN219664389U (en) | Multistage rotary vibration screening device | |
| CN220443971U (en) | Impact crusher | |
| CN209271559U (en) | Practical and efficient medicinal grinding device | |
| JPH02174948A (en) | Centrifugal crusher | |
| SU1127628A1 (en) | Material crushing arrangement |