CN1058203C - Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof - Google Patents

Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof Download PDF

Info

Publication number
CN1058203C
CN1058203C CN96116891A CN96116891A CN1058203C CN 1058203 C CN1058203 C CN 1058203C CN 96116891 A CN96116891 A CN 96116891A CN 96116891 A CN96116891 A CN 96116891A CN 1058203 C CN1058203 C CN 1058203C
Authority
CN
China
Prior art keywords
density
bed
sorting
products
product
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.)
Expired - Fee Related
Application number
CN96116891A
Other languages
Chinese (zh)
Other versions
CN1161884A (en
Inventor
陈清如
韦鲁滨
梁春成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN96116891A priority Critical patent/CN1058203C/en
Publication of CN1161884A publication Critical patent/CN1161884A/en
Application granted granted Critical
Publication of CN1058203C publication Critical patent/CN1058203C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The present invention provides a method for separating three products by a fluidized bed with double-thickness layer of air dense mediums and a device thereof. One current sorting device can only separate two kind products; if three kinds of products are separated, two separating machines will be connected in series; the continuous production is difficult to realize. The present invention achieves the purpose that one separating machine generates three kinds of different products at the same time by reforming the structure of the fluidized bed, adopting reasonable dense medium kinds and the match of granularity and density, etc. The present invention has the advantages of no need of water, no environment pollution, high separation precision, large treatment capacity, simple technological processes, low production cost, investments of the device and construction saving, etc.

Description

Carry out the method and the device thereof of three products sorting with Double-density Fluidized Bed
The present invention relates to a kind of mechanical separation device, especially a kind of device that the solid particle object is carried out the dry separation processing with the fluidization theory.
In prior art, a lot of to the classification of solid or method that solid is separated from solid, screening or methods such as liquid sorting or pneumatic separation are arranged, but traditional method is with the wet split of water as medium, this method water consumption is big, and the sewage of its discharging easily causes serious environmental to pollute.Sorting for drought and water shortage area material causes great difficulty; Coal separation for severe cold area and the easy argillization of chance water also causes difficulty.
A kind of novel dry separation method and apparatus one air dense medium fluidized bed coal preparation method and device thereof appearred in recent years, United States Patent (USP) the 5th, 392, No. 922 and China Patent No. are 92111310.6 the dense medium fluidized bed dry separation device of large-scale air, these existing air dense medium fluidized bed method for separating and transposition all propose at two kinds of products, in same fluid bed separation groove, can only form single separating density, thereby a separator can only produce two kinds of coal products that contain different ash content quality simultaneously.When needs are selected the product of three kinds of different qualities, must lead choosing again by two existing air dense medium fluidized bed separator series connection, this not only can make capital construction and equipment investment and personal management expense increase, and the preparation of its technological process complexity, particularly medium solid and recovery have difficulties.
Because consider the simplification and the technologic feasibility of whole system flow process, the main material that has same separation principle when selecting medium solid to select for use again to separate with sorted materials, when sorted materials must have a certain amount of main separation medium solid after leading portion fluid bed separation groove main separation, even install de-mediated equipment between the separator additional and also be difficult to purify this part medium solid particle main the choosing again, the amount of sneaking into the main separation medium solid that selects again in the groove is difficult to control, and this will cause (1) to select bed density and separating density in the groove can't be stabilized on the setting value again; (2) select with the medium solid particle of main separation again and can't accomplish to separate fully, thereby selected recycling of medium solid particle to cause difficulty again, (3) when selecting main separation medium solid particle in the groove to be mixed with when a certain amount of again, its fluidized state will worsen, the separation characteristic variation.Therefore, even existing air dense medium fluidized bed sorting technology has been got rid of reason economically, also be difficult to realize the sorting of continuity three products.
The objective of the invention is in order to overcome above-mentioned the deficiencies in the prior art part, and a kind of novel dry fluidized bed method for separating and device that is applicable to the three products sorting is provided, it can form two even stable states simultaneously and satisfy the fluid bed separation band of certain technological requirement in same fluid bed separation groove; A separator can produce the product of three kinds of different qualities simultaneously, thereby reduces investment outlay, simplifies technological process effectively and improve equipment control, and can realize efficient, economic continuity suitability for industrialized production.
Task of the present invention is implemented as follows: it is to wait by certain commensurate in scope by the fluid bed housing that adopts special construction, medium supplementary device, air-distribution device and with the density of rational medium solid kind and medium solid and granularity to realize; A kind of device that carries out the three products sorting with Double-density Fluidized Bed, it can form two even stable states simultaneously in same fluid bed separation groove, and satisfies the sorting band that coal preparation technique requires.Wherein, upper fluid-bed is a low-density sorting band, and the bottom fluid bed is a high density sorting band, and it comprises the fluid bed housing, and it is gone to the bottom and is connected with distributor, pre-distributor, appendix in turn; The flow direction of setting light product is the length direction of fluid bed separation, is respectively arranged with selected material and medium feeding mouth, light product discharge gate along fluid-bed separator length direction both sides, is provided with light product discharge thumb wheel in light product discharge gate inboard; Be provided with drag conveyor along the fluid-bed separator width, be respectively arranged with intermediate product discharge gate and heavy product discharge gate in its two ends, drag conveyor is along moving with the perpendicular direction of the light product discharge direction of motion; Below the upper scraping plate of the drag conveyor of the intermediate product discharge gate in left side, the intermediate product discharge sieve plate with certain inclination angle is installed, under the lower scraping plate of the heavy product discharge gate in right side, the heavy product discharge sieve plate with certain angle is installed; A. the fluid bed housing is by two up big and down small direct tube sections, combination shape housing that conical section is formed of middle connection; B. the top of drag conveyor and bottom scraper plate are imbedded the fluidized-bed layer middle part and the bottom of separation chamber respectively.The tapered slope inclination angle of the middle taper changeover portion housing of described fluid bed housing is between 60 °~80 °.Both sides, described selected material and light substance feeding mouth below are provided with the anti-pollution net that reduces the material mispairing, also are provided with the anti-pollution net that reduces the material mispairing between the upper scraping plate of heavy product material discharge gate one side drag conveyor and lower scraping plate.Described selected material and medium feeding mouth are that the dense media feeding mouth that is selected in material and light substance feeding mouth and its underpart is formed by the upper strata, separate by dividing plate between the two, the additional medium solid of low-density sorting band and high density sorting band additional increase the weight of to be situated between can be respectively by separately feeding mouth and send on separately the sorting band.
Described selected material and medium feeding mouth are that the dense media feeding mouth that is selected in material and light substance feeding mouth and its underpart is formed by the upper strata, separate by dividing plate between the two, the additional medium solid of low-density sorting band and high density sorting band additional increase the weight of to be situated between can be respectively by separately feeding mouth and send on separately the sorting band.
A kind of method of carrying out the three products sorting with Double-density Fluidized Bed, a. compressed air is imported in the fluid bed housing equably, start drag conveyor simultaneously, to join on the drag conveyor lower scraping plate from the dense media feeding mouth than the high density medium solid in two kinds of different mediums of commensurate in scope by certain particle ratio and density, when it reaches the height of upper scraping plate, until reaching the technological requirement height, can in the bed body, form stable dual density laminarization bed on from light substance feeding mouth adding low-density medium solid to upper scraping plate; B. start light product discharge thumb wheel, add sorted materials from feeding mouth, make it in dual density laminarization bed, be divided into light product, intermediate product and three kinds of products of heavy product by its density size, light product in three kinds of products is discharged through the discharge gate overflow, intermediate product, heavy product are forced to discharge from middle product discharge gate and heavy product discharge gate by the drag conveyor of all imbedding in the fluidized-bed layer respectively, and the materials flow direction of the materials flow direction of light product and intermediate product and heavy product is perpendicular; C. the medium solid that is entrained with light product and heavy product, can add fluid bed respectively by the bed upper and lower by corresponding circulation medium solid as low-density and high density sorting band, fluid bed is reached separate and the dynamic equilibrium that mixes, to realize the three products continuous sorting of format high throughput.The high density medium solid in the described adding fluid bed and the fineness ratio scope of low-density medium solid are 1.5~3.0.High density medium solid in the described adding fluid bed is 1.2~1.8 with the density of low-density medium solid than scope.
The present invention has following advantage compared with the prior art: the present invention can realize successional three products dry separation, promptly can produce the product of light product, intermediate product and three kinds of different qualities of heavy product simultaneously with a separator, it also has the sharpness of separation height, the unit are disposal ability is big, characteristics such as floor space is little, and capital expenditure and production cost are low.Also can carry out desulfurization and deashing effectively simultaneously, and need not water resource coal, non-environmental-pollution, it is simple in structure, and the process easy operating is easy to industrialness and applies.
Description of drawings:
Fig. 1 is a structural front view of the present invention.
Fig. 2 is a structure side view of the present invention.
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail:
The present invention carries out the device of three products sorting with Double-density Fluidized Bed, as shown in the figure, it comprises that fluid bed housing 9 is connected the combined housing that a tapering transition section is formed by two up big and down small direct tube sections with the centre, in the fluid bed housing 9 is separation chamber 12, and fluid bed housing 9 lower bottom parts are connected with distributor 6, a plurality of pre-distributor 5 and a plurality of appendixs 7 that are connected with pre-distributor 5 in turn; The materials flow direction setting of light product is the length direction of separator, be provided with drag conveyor 1 along fluid bed insied width direction, and it is fixing by a plurality of guiding pinch rollers 4, be respectively equipped with intermediate product discharge gate 2 and heavy product discharge gate 15 along corresponding both sides, the conical section top of the width of fluid bed housing 9, and anti-pollution net 16 with certain inclination angle and 17 and heavy product discharge sieve plate 8 and intermediate product discharge sieve plate 3 are set respectively; Respectively be provided with light product discharge gate 10 and selected material, light substance feeding mouth 13 along the corresponding both sides of top direct tube section of the length direction of fluid bed housing 9 and at the dense media feeding mouth 14 of its underpart, dense media feeding mouth 14 is to separate by dividing plate with selected material and light substance feeding mouth 13.Inboard at light product discharge gate 10 is provided with light product discharge thumb wheel 11, by it light material is discharged through light product discharge gate 10 overflows.Selected material and the circulation of low-density sorting band and additional medium solid is sent into fluidized-bed layer by feeding mouth 13 a side, the circulation of high density sorting band and additional medium solid add to the bed bottom by feeding mouth 14, selected material is pressed the layering of density size in separation chamber 12, be divided into light product, intermediate product and heavy product, the light product that swims in bed face moves to opposite side along sorting band 12 along the fluid-bed separator length direction, discharge to discharge gate 10 overflows through light product discharge thumb wheel 11, the intermediate product in heavy product and intermediate layer is discharged through heavy product discharge gate 15 and intermediate product discharge gate 2 by the drag conveyor 1 that is provided with along the fluid-bed separator width respectively.At the anti-pollution net 16 that the top of fluidized-bed layer is provided with, be for avoiding selected material just to be discharged or carried secretly to bed inside at heavy material discharge gate 15 by drag conveyor 1 traction to intermediate material discharge gate 2 without sorting; Equally, the anti-pollution net 17 of intermediate product that is positioned at bed middle part is in order to prevent that selected material from being discharged by drag conveyor 1 traction to heavy product discharge gate 15 before entering high density branch constituency; Be arranged on intermediate product discharge sieve plate 3 in the fluid bed and heavy product discharge sieve plate 8 and be in order in the product discharge process, to reduce of the influence of product discharger as far as possible, can reduce the medium solid of product in discharging simultaneously and carry secretly fluidized state and sorting property.
Because fluidized-bed structure of the present invention is the combined housing that connects a tapering transition piece housing between the direct tube section of up big and down small two different cross section sizes, in the fluid bed of this special bed type structure, because the sectional dimension of bottom direct tube section is littler than the straight tube in top, so under same flow, the superficial gas velocity of bottom direct tube section is bigger than top direct tube section, this has just guaranteed in the direct tube section of bottom with high density, the medium solid particle that coarsegrain is taken as the leading factor under higher gas speed, in the direct tube section of top with low-density, the medium solid particle that small grain size is taken as the leading factor is than obtaining even fluidisation under the low gas velocity simultaneously.In addition, in conical section, gas speed reduces gradually along the height of bed, and the stressed medium solid particle that makes of particle separates automatically by density or granularity in conical section, the separation trend of particle has obtained reinforcement in conical section, the fluid bed of therefore this special bed type structure is beneficial to the three products sorting of continous-stable.
The present invention carries out the method for three products sorting with Double-density Fluidized Bed, in the fluid bed housing 9 that carries out the three products sorting unit with Double-density Fluidized Bed, feed compressed air equably, start drag conveyor 1, fineness ratio by high density and low-density medium solid is 1.5~3.0, its density is than being that high density medium solid in two kinds of different mediums of 1.2~1.8 commensurate in scope joins on drag conveyor 1 lower scraping plate from dense media feeding mouth 14, when it reaches height to upper scraping plate, add the low-density dense media to reaching the technological requirement height from light substance feeding mouth 13, can in separation chamber 12, form stable dual density laminarization bed, start light product discharge thumb wheel 11, add sorted materials from feeding mouth 13, make it in dual density laminarization bed, be divided into light product by its density size, three kinds of products of intermediate product and heavy product.The light product that swims in bed face moves to opposite side along the length direction of fluid-bed separator, discharge through light product discharge thumb wheel 11 to discharge gate 10 overflows, the heavy product of the intermediate product in intermediate layer and bottom is discharged through intermediate product discharge gate 2 and heavy product discharge gate 15 by the drag conveyor 1 that is provided with along the fluid-bed separator width, and the materials flow direction of light product and intermediate product and heavy product materials flow direction are perpendicular; The medium solid that is entrained with light product and heavy product, can be corresponding add separately fluidized-bed layer respectively by the bed upper and lower as the circulation medium solid of low-density and high density sorting band, make fluid bed can stably keep reaching separation and the dynamic equilibrium that mixes, thereby can realize the three products continuous sorting of format high throughput.

Claims (7)

1. device that carries out the three products sorting with Double-density Fluidized Bed, it can form two even stable states simultaneously in same fluid bed separation groove, and satisfy the sorting band that coal preparation technique requires, wherein, upper fluid-bed is a low-density sorting band, and the bottom fluid bed is a high density sorting band; It comprises fluid bed housing (9), and it is gone to the bottom and is connected with distributor (6), pre-distributor (5), appendix (7) in turn; The flow direction of setting light product is the length direction of fluid bed separation, be respectively arranged with selected material (14) and medium feeding mouth (13), light product discharge gate (10) along fluid-bed separator length direction both sides, be provided with light product discharge thumb wheel (11) in light product discharge gate (10) inboard; Be provided with drag conveyor (1) along the fluid-bed separator width, be respectively arranged with intermediate product discharge gate (2) and heavy product discharge gate (15) in its two ends, drag conveyor (1) is along moving with the perpendicular direction of the light product discharge direction of motion; Upper scraping plate below at the drag conveyor (1) of the intermediate product discharge gate (2) in left side is equipped with the intermediate product discharge sieve plate (3) with certain inclination angle, and the lower scraping plate of heavy product discharge gate (15) below is equipped with the heavy product discharge sieve plate (8) with certain angle on the right side; It is characterized in that: a. fluid bed housing (9) is by connecting the combination shape housing that conical section is formed in the middle of two up big and down small direct tube sections; B. the top of drag conveyor (1) and bottom scraper plate are imbedded the fluidized-bed layer middle part and the bottom of separation chamber (12) respectively.
2. the device that carries out the three products sorting with Double-density Fluidized Bed according to claim 1 is characterized in that: the tapered slope inclination angle of the middle taper changeover portion housing of described fluid bed housing (9) is between 60 °~80 °.
3. the device that carries out the three products sorting with Double-density Fluidized Bed according to claim 1 and 2, it is characterized in that: described selected material and both sides, light substance feeding mouth (13) below are provided with the anti-pollution net (16) that reduces the material mispairing, also are provided with the anti-pollution net (17) that reduces the material mispairing between upper scraping plate that weighs product material discharge gate (15) one side drag conveyors (1) and lower scraping plate.
4. the device that carries out the three products sorting with Double-density Fluidized Bed according to claim 1, it is characterized in that: described selected material and medium feeding mouth are that the dense media feeding mouth (14) that is selected in material and light substance feeding mouth (13) and its underpart is formed by the upper strata, separate by dividing plate between the two, the additional medium solid of low-density sorting band and high density sorting band additional increased the weight of to be situated between and can be respectively sent on separately the sorting band by separately feeding mouth (13) and (14).
5. method of carrying out the three products sorting with Double-density Fluidized Bed, it is characterized in that: a. imports compressed air in the fluid bed housing (9) equably, start drag conveyor (1) simultaneously, to join on drag conveyor (1) lower scraping plate from dense media feeding mouth (14) than the high density medium solid in two kinds of different mediums of commensurate in scope by certain particle ratio and density, when it reaches the height of upper scraping plate, until reaching the technological requirement height, can in the bed body, form stable dual density laminarization bed on from light substance feeding mouth (13) adding low-density medium solid to upper scraping plate; B. start light product discharge thumb wheel (11), add sorted materials from feeding mouth (13), make it in dual density laminarization bed, be divided into light product, intermediate product and three kinds of products of heavy product by its density size, light product in three kinds of products is discharged through discharge gate (10) overflow, intermediate product, heavy product are forced to discharge from middle product discharge gate (2) and heavy product discharge gate (15) by the drag conveyor of all imbedding in the fluidized-bed layer (1) respectively, and the materials flow direction of the materials flow direction of light product and intermediate product and heavy product is perpendicular; C. the medium solid that is entrained with light product and heavy product, can add fluid bed respectively by the bed upper and lower by corresponding circulation medium solid as low-density and high density sorting band, fluid bed is reached separate and the dynamic equilibrium that mixes, to realize the three products continuous sorting of format high throughput.
6. method of carrying out the three products sorting with Double-density Fluidized Bed according to claim 5 is characterized in that: the high density medium solid in the described adding fluid bed and the fineness ratio scope of low-density medium solid are 1.5~3.0.
7. method of carrying out the three products sorting with Double-density Fluidized Bed according to claim 5 is characterized in that: the high density medium solid in the described adding fluid bed is 1.2~1.8 with the density of low-density medium solid than scope.
CN96116891A 1996-04-10 1996-04-10 Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof Expired - Fee Related CN1058203C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN96116891A CN1058203C (en) 1996-04-10 1996-04-10 Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN96116891A CN1058203C (en) 1996-04-10 1996-04-10 Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof

Publications (2)

Publication Number Publication Date
CN1161884A CN1161884A (en) 1997-10-15
CN1058203C true CN1058203C (en) 2000-11-08

Family

ID=5123844

Family Applications (1)

Application Number Title Priority Date Filing Date
CN96116891A Expired - Fee Related CN1058203C (en) 1996-04-10 1996-04-10 Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof

Country Status (1)

Country Link
CN (1) CN1058203C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041008A1 (en) * 2010-09-29 2012-04-05 Zhao Fuhe Three-product sealed spiral dense medium separator

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101444778B (en) * 2009-01-05 2012-09-05 中国矿业大学(北京) Dry method cull eliminator and application thereof
CZ2010541A3 (en) * 2010-07-09 2011-08-24 Novopol A.S. Sorting method and apparatus for making the same
CN102974543B (en) * 2012-12-18 2018-07-03 孙刚 A kind of Dense-medium dry separation equipment
CN104043519A (en) * 2014-06-18 2014-09-17 孙玉平 Internal-lift-type conical heavy medium separator
CN105214956B (en) * 2015-10-28 2017-06-30 中国矿业大学 A kind of dense gas solidization bed dry separation system and technique
CN110293056A (en) 2019-03-29 2019-10-01 中国矿业大学 A kind of gas-solid fluidized bed dry separation technique using separating density gradient
CN110328140B (en) * 2019-03-29 2022-03-08 中国矿业大学 Method for improving fluidization quality and separation density stability of particles and matched device
WO2022188177A1 (en) * 2021-03-12 2022-09-15 方甡 Sorting apparatus and combustion furnace provided with same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194971A (en) * 1977-09-13 1980-03-25 Canadian Patents & Development Limited Method of sorting fluidized particulate material and apparatus therefor
CN87101056A (en) * 1987-05-28 1987-12-16 中国矿业学院 The dressing coal with dry fluidized bed method and apparatus
CN1085830A (en) * 1992-10-16 1994-04-27 中国矿业大学 Large air fluidized bed for separating heavy solids medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4194971A (en) * 1977-09-13 1980-03-25 Canadian Patents & Development Limited Method of sorting fluidized particulate material and apparatus therefor
CN87101056A (en) * 1987-05-28 1987-12-16 中国矿业学院 The dressing coal with dry fluidized bed method and apparatus
CN1085830A (en) * 1992-10-16 1994-04-27 中国矿业大学 Large air fluidized bed for separating heavy solids medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041008A1 (en) * 2010-09-29 2012-04-05 Zhao Fuhe Three-product sealed spiral dense medium separator

Also Published As

Publication number Publication date
CN1161884A (en) 1997-10-15

Similar Documents

Publication Publication Date Title
US4364822A (en) Autogenous heavy medium process and apparatus for separating coal from refuse
CN1058203C (en) Method for sorting three products by fluid-bed with double-thickness layer of air dense-media and apparatus thereof
US5197398A (en) Separation of pyrite from coal in a fluidized bed
WO2016107022A1 (en) Dry-method heavy medium sorting machine using a dry-method heavy medium sorting bed and sorting device
US11396024B2 (en) Underground coal separation process
CN201676741U (en) Desliming type liquid-solid fluidized bed coarse slime sorting and grading device
Zhenfu et al. Effect of fine coal accumulation on dense phase fluidized bed performance
CN101318182A (en) Modular coal preparation process and equipment based on gas-solid diphasic stream
CN110328140B (en) Method for improving fluidization quality and separation density stability of particles and matched device
US3891546A (en) Helical chute concentrator and method of concentrating
CN1032122C (en) Large air fluidized bed for separating heavy solids medium
CN102019275B (en) Airflow classifying and airflow drying process for coking coal
CN102974543B (en) A kind of Dense-medium dry separation equipment
CN105381950A (en) Large dry dense medium fluidized bed separation machine and separation system
CN107233995A (en) It is a kind of that bed dry coal dressing machine is fluidized from medium gas-particle two-phase based on bed point plate
CN2267099Y (en) Equipment for separating three kinds of products by double density layer air and heavy media fluidized bed
CN113171985A (en) Full-grain cascade combined sorting system and process
CN1005314B (en) Process and device for dressing coal with dry fluidized bed
CN2149983Y (en) Dry sorting device for giant air heavy-medium fluidized-bed
CN2314850Y (en) Composite dry sorting machine
CN105537120B (en) The system and method for handling low-order coal
CN201337986Y (en) Dry separation device
CN205518634U (en) System for handle low order coal
CN101444778B (en) Dry method cull eliminator and application thereof
CN205392728U (en) Concentrated magnet separator

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee