CN101979832A - Underground separation method and device for gangue - Google Patents

Underground separation method and device for gangue Download PDF

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Publication number
CN101979832A
CN101979832A CN 201010518120 CN201010518120A CN101979832A CN 101979832 A CN101979832 A CN 101979832A CN 201010518120 CN201010518120 CN 201010518120 CN 201010518120 A CN201010518120 A CN 201010518120A CN 101979832 A CN101979832 A CN 101979832A
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China
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coal
run
rom
mine
spoil
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CN 201010518120
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Chinese (zh)
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卢建刚
郑剑锋
孙优贤
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN 201010518120 priority Critical patent/CN101979832A/en
Publication of CN101979832A publication Critical patent/CN101979832A/en
Priority to PCT/CN2011/074260 priority patent/WO2012055233A1/en
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Abstract

Gross coal extracted in a coal mine underground is generally mixed with a great amount of gangue, and a plurality of problems such as energy waste, land occupation, environmental pollution, mine area sinking and the like can be caused if the gangue and the coal are lifted to the ground for treatment. The invention provides an underground separation method and an underground separation device for gangue. According to the difference of the coal and the gangue in the aspect of physical properties such as hardness and the like, the coal and the gangue are made to generate different speeds in the approximately horizontal direction through impact, so that the coal and the gangue are separated according to different popping distances. The method can obviously reduce ineffective traffic of the coal mine and realize underground in-situ refilling of the gangue. The underground separation device for gangue has the advantages that: the device has a simple structure, is safe and reliable to operate, occupies small space, is easy to implement underground and the like.

Description

Separation method and device under the waste shaft
Technical field
The present invention relates to separation method and device under a kind of waste shaft, particularly under coal mine, directly separate separation method and device under the waste shaft of coal and spoil.
Background technology
Along with improving constantly of mining mechanization degree, particularly the top coal caving broad application makes in the coal mining process and sneaks into coal stream by a large amount of spoils of generations such as work plane tomography, roof and floor and dirt band.According to incompletely statistics, promote the middle percentage of shale content of the run-of-mine coal (ROM coal) (without the coal of any processing, mainly being coal and spoil after the extraction) that enters ground coal preparation plant from the down-hole on average about 16%.
In the coal industry traditional work, all will mine with coal separation be divided into two independently systems.The colliery does not deal with the spoil of sneaking in the coal in the down-hole, but directly transports, is promoted to ground together, is got rid of by washing by coal preparation plant again.Its weak point has: the transportation of spoil and a large amount of energy of lifting waste; Increase the electromechanical equipment loss and the energy consumption of ground coal preparation plant; The isolated spoil of coal preparation plant takies a large amount of soils; Spoil pollutes the soil and the water source of surrounding area; Mining area depression etc.
Therefore, coal preparation technology and equipment under the development coal mine are got rid of spoil on the spot in the down-hole, especially get rid of the bulk spoil, can produce remarkable economic efficiency and social benefit, are embodied in:
(1) can avoid a large amount of invalid transportations, improve the actual production capacity of mine, realize " energy-saving and emission-reduction ".With sneak into spoil in the run-of-mine coal (ROM coal) by down-hole transportation, be promoted to ground coal preparation plant and process invalid transportation again; If can get rid of on the spot in the down-hole, then the capacity that was used to transport, promote spoil originally can be converted into the fortune coal, not only can improve the practical capacity of mine transportation, also played the effect of " energy-saving and emission-reduction " simultaneously.
(2) the electromechanical equipment loss and the energy consumption of reduction ground coal preparation plant.Lock out operation, the especially processing of bulk spoil of a large amount of spoils can cause bigger mechanical loss to the electromechanical equipment of coal preparation plant, have also increased the energy consumption of electromechanical equipment simultaneously.The separation on the spot of downhole gangue can significantly reduce the electromechanical equipment loss and the energy consumption of ground coal preparation plant.
(3) save the area, preserve the ecological environment.The spoil that ground coal preparation plant is got rid of need take a large amount of places and carry out accumulation deposit, after the spoil weathering, meets wind and then stirs up a cloud of dust, and meets then sewage crossing current of rain, and the sulphur content in the spoil and combustible very easily form spontaneous combustion, has more increased the weight of the infringement to ecological environment.Get rid of spoil in the down-hole on the spot by sorting, then can eliminate these drawbacks.
(4) the spoil backfill on the spot of down-hole separation.The spoil (especially bulk spoil) that the down-hole is got rid of on the spot can effectively be avoided subsiding of ground, mining area as adopting empty backfilling material; After technical finesse, the coal in the unrenewable safety pillar of replaceable conventional art, the purpose that realize improving the coal recovery ratio, prolongs mine service-life.
Summary of the invention
The present invention's technical problem at first to be solved provides under a kind of waste shaft the method for separating, and it is simple and practical and be easy to the down-hole and implement.For this reason, the present invention by the following technical solutions: run-of-mine coal (ROM coal) is fallen from eminence, on the run-of-mine coal (ROM coal) descent path, provide lateral impact power by the mode of clashing into to run-of-mine coal (ROM coal), the distance that ejected by described impact force according to dropping is different, distinguishes coal and spoil in the run-of-mine coal (ROM coal).
On the basis of adopting technique scheme, the present invention also can adopt following further technical scheme simultaneously:
It provides the run-of-mine coal (ROM coal) conveying device, and run-of-mine coal (ROM coal) is fallen from the material outlet of described run-of-mine coal (ROM coal) conveying device; The position that spoil in run-of-mine coal (ROM coal) is subjected to fall behind the described bump provides the spoil gathering-device; The position that coal in run-of-mine coal (ROM coal) is subjected to fall behind the described bump provides the coal conveying device.
Above described spoil gathering-device, provide rotating spillplate, make spoil can rely on self kinetic energy to rush open described spillplate and fall into described spoil gathering-device, make the dropping that relies on self kinetic energy can not rush open described spillplate be imported into described coal conveying device.
Method provided by the present invention utilizes coal and spoil to distinguish in the difference aspect the physical propertys such as hardness, and making most of spoil (especially bulk spoil) is separated going out in the down-hole.
Because coal (especially lumped coal) quality is loose, is easy to fragmentation, so elasticity is less, coal Powdered destruction occurs or integral body is broken into a plurality of fritters at rum point easily after being clashed into.In this destructive process, most of energy that bump produces is absorbed, so the coal after being clashed into does not have too big kinetic energy usually, it is less to show as movement velocity.
Spoil is then different.Spoil (especially block spoil) quality densification is hard, is difficult to fragmentation, so the energy that produces when being subjected to clashing into can not in time discharge, the spoil after being clashed into has bigger kinetic energy usually, thereby makes spoil often have the movement velocity bigger than coal.
The present invention is based on above-mentioned principle and proposed separation method under the waste shaft: by the run-of-mine coal (ROM coal) that bump falls from the top, make coal near the direction of level, produce different speed with spoil, and then according to effectively separating apart from difference of ejecting.
Another technical problem to be solved of the present invention provides a kind of waste shaft lower separation device of using said method.For this reason, the present invention by the following technical solutions: it comprises first conveying device and second conveying device, the preferred ribbon conveyer of two cover conveying devices; First ribbon conveyer is carried run-of-mine coal (ROM coal), and second ribbon conveyer is carried the coal behind the most of spoil of eliminating from run-of-mine coal (ROM coal); The material outlet of described first ribbon conveyer is higher than the conveyer belt of described second ribbon conveyer in vertical direction; Between the conveyer belt of the material outlet of described first ribbon conveyer and described second ribbon conveyer, also be provided with the run-of-mine coal (ROM coal) impacting body of rotation, the axis of rotation level of described run-of-mine coal (ROM coal) impacting body and perpendicular to the throughput direction of first ribbon conveyer.
On the basis of adopting technique scheme, the present invention also can adopt following further technical scheme simultaneously:
Ejection direction that spoil is clashed into by the run-of-mine coal (ROM coal) impacting body tiltedly below be provided with the spoil collection container; Clashed into by the run-of-mine coal (ROM coal) impacting body and the direction that falls is provided with the coal guide plate that material is imported the conveyer belt of second ribbon conveyer at coal.
The top of described spoil collection container is provided with towards the spillplate run-of-mine coal (ROM coal) impacting body, rotating, and described spillplate can constitute around the baffle plate bar of turning cylinder independent rotation by many; The top of described spillplate is provided with spray header; Described spillplate is in the top of described coal guide plate, and described spillplate and described coal guide plate have material to import matching relationship.
Described baffle plate bar is towards the one side of run-of-mine coal (ROM coal) impacting body, has to contain chromium or contain beryllium or contain the surface course of chromium and beryllium simultaneously.
The main body of described run-of-mine coal (ROM coal) impacting body is a cylinder, and its surface has axial bump bar, and the top of described run-of-mine coal (ROM coal) impacting body is provided with spray header.
The surface of described bump bar has and contains chromium or contain beryllium or contain the surface course of chromium and beryllium simultaneously.
Owing to adopt technical scheme of the present invention, can utilize said method and device, run-of-mine coal (ROM coal) impacting body by rotation clashes into the run-of-mine coal (ROM coal) that falls from the top, makes coal and spoil obtain different horizontal velocity component, and then according to the difference of drop point coal is separated with most of spoil; Further, can also in separation process, directly the coal transhipment be carried, spoil is collected in separation process automatically.Further, the spillplate be furnished with of spoil collection container only could be opened during greater than threshold in suffered external force; When spoil clashed into spillplate with bigger kinetic energy and speed, spillplate was opened greater than threshold because of suffered external force, and spoil is fallen into the spoil collection container; For the coal of a small amount of bullet to spoil collection container top, because its kinetic energy and speed are less than normal, to the impact of spillplate less than threshold, be not enough to spillplate is rushed open, thereby make it on the conveyer belt of coal guide plate landing to the second conveyer, further improve separating effect, reduce the loss of coal resources.
Description of drawings
Fig. 1 is the schematic diagram of waste shaft lower separation device embodiment of the present invention.
Fig. 2 is the structural representation of spillplate.
Number in the figure is expressed as follows respectively: 1, run-of-mine coal (ROM coal) impacting body, 2, the bump bar on run-of-mine coal (ROM coal) impacting body surface, 3, the axis of rotation of run-of-mine coal (ROM coal) impacting body, 4, spillplate, 5, spoil collection container, 6, coal guide plate, 7, the spray header of run-of-mine coal (ROM coal) impacting body top, 8, the spray header of spillplate top, 9, the conveyer belt of first ribbon conveyer, the material outlet of 10, first ribbon conveyer, the conveyer belt of 11, second ribbon conveyer, 12, baffle plate bar, 13, spring, 14, be equipped with the turning cylinder of resilience damper, 100, run-of-mine coal (ROM coal), 101, coal, 102, spoil.
The specific embodiment
As shown in Figure 1, the present invention includes first conveying device and second conveying device, the preferred ribbon conveyer of two cover conveying devices; The conveyer belt 9 of first ribbon conveyer is carried run-of-mine coal (ROM coal) 100, the conveyer belt 11 of second ribbon conveyer is carried the coal 101 behind the most of spoil of eliminating from run-of-mine coal (ROM coal), the material outlet 10 of first ribbon conveyer is higher than the conveyer belt 11 of second ribbon conveyer in vertical direction, between the conveyer belt 11 of the material outlet 10 of first ribbon conveyer and second ribbon conveyer, also be provided with the run-of-mine coal (ROM coal) impacting body 1 of rotation, axis of rotation 3 levels of described run-of-mine coal (ROM coal) impacting body and perpendicular to the throughput direction of the conveyer belt 9 of first ribbon conveyer.
Spoil 102 by the ejection direction of run-of-mine coal (ROM coal) impacting body 1 bump tiltedly below be provided with spoil collection container 5; Direction in that coal 101 is fallen by run-of-mine coal (ROM coal) impacting body 1 bump is provided with the coal guide plate 6 that material is imported the conveyer belt 9 of second ribbon conveyer.
The top of spoil collection container 5 be provided with towards run-of-mine coal (ROM coal) impacting body 1, that tilt, spring-supported spillplate 4 arranged; Spillplate 4 is in the oblique upper of coal guide plate 6, and spillplate 4 has material to import matching relationship with coal guide plate 6.
As shown in Figure 2, spillplate 4 is by constituting around many baffle plate bars 12 of turning cylinder 14 independent rotation that are equipped with the resilience damper; Every baffle plate bar 12 is supported by separately spring 13 respectively.
The main run-of-mine coal (ROM coal) of forming by coal 101 and spoil 102 100, conveying through the conveyer belt 9 of first ribbon conveyer, arrive material outlet 10 places of first ribbon conveyer, above run-of-mine coal (ROM coal) impacting body 1, fall, and be subjected to the bump of run-of-mine coal (ROM coal) impacting body 1, coal 101 in the run-of-mine coal (ROM coal) obtains different horizontal velocity component with spoil 102, and as previously mentioned, spoil 102 often flies fartherly than coal 101.Spoil collection container 5 is arranged on the position more farther than the drop point of most of coals 101; Spoil collection container 5 is furnished with spillplate 4, and spillplate 4 could be opened greater than by the threshold of spring 13 decision the time in suffered external force; When spoil 102 clashed into spillplate 4 with bigger kinetic energy and speed, spillplate 4 was opened greater than threshold because of suffered external force, and spoil 102 is fallen into spoil collection container 5; For the coal 101 of a small amount of bullet,, the impact of spillplate 4 less than threshold, is not enough to spillplate 4 is rushed open, thereby makes above-mentioned coal 101 along spillplate 4 landings because its kinetic energy and speed are less than normal to spoil collection container 5 tops.Above-mentioned coal 101 does not have the coal 101 of bullet to spoil collection container 5 tops with other great majority, is slipped to through coal guide plate 6 on the conveyer belt 11 of second ribbon conveyer.
In order to explain above-mentioned embodiment more fully, below with regard to two capital equipments of waste shaft lower separation device: run-of-mine coal (ROM coal) impacting body 1 and spillplate 4 are described further.
1, run-of-mine coal (ROM coal) impacting body
As shown in Figure 1, the agent structure of run-of-mine coal (ROM coal) impacting body 1 can adopt the solid cylinder formed steel construction, makes run-of-mine coal (ROM coal) impacting body 1 have bigger quality, and then kinetic energy and inertia when increasing 1 rotation of run-of-mine coal (ROM coal) impacting body.Because coal 101 and spoil 102 fall continuously, for making all coals 101 or spoil 102 as far as possible can both effectively bump take place with run-of-mine coal (ROM coal) impacting body 1, have axial bump bar 2 at the external surface of run-of-mine coal (ROM coal) impacting body 1.Above-mentioned bump bar 2 can be made of the bigger alloy steel products (as manganese steel) of solid steel or intensity, at the external surface of run-of-mine coal (ROM coal) impacting body 1 fixedly the time, with axis of rotation 3 keeping parallelisms of run-of-mine coal (ROM coal) impacting body 1.Above-mentioned external surface is fixed with bump bar 2, the similar lotiform run-of-mine coal (ROM coal) impacting body 1 in cross section, with suitable rotating speed rotation, can make most coals 101 or spoil 102 and run-of-mine coal (ROM coal) impacting body 1 that effectively bump takes place, and near the direction of level, obtain different movement velocitys.The rotating speed of run-of-mine coal (ROM coal) impacting body 1 can be regulated, and can determine optimum speed by test at different operating modes, makes coal 101, spoil 102 and the effectively difference maximization of bump back catapulting distance of run-of-mine coal (ROM coal) impacting body 1.
It is accidents caused to produce spark when avoiding run-of-mine coal (ROM coal) 100 with run-of-mine coal (ROM coal) impacting body 1 bump, taked following measure among the present invention: (1) is provided with spray header 7 above the run-of-mine coal (ROM coal) impacting body, run-of-mine coal (ROM coal) impacting body 1 and near run-of-mine coal (ROM coal) thereof are all within the spray scope, so both can suppress and extinguish spark, can effectively reduce the dust that the bump back produces again, when eliminating accident potential, improve the downhole production environment.(2) the bump bar 2 to run-of-mine coal (ROM coal) impacting body surface carries out surfacing, makes it have the surface course that contains chromium or contain beryllium or contain chromium and beryllium simultaneously; Chromium and beryllium belong to active less metal, can effectively reduce the generation of spark and the kindling of reduction spark; Above-mentioned measure does not influence the intensity of described bump bar 2, can guarantee the production safety of separation process under the waste shaft simultaneously.
2, spillplate
The structural representation of spillplate 4 as shown in Figure 2.Spillplate 4 is made of many baffle plate bars 12, and baffle plate bar 12 can be made of steel plate, and each baffle plate bar 12 can center on turning cylinder 14 independent rotation that are equipped with the resilience damper, and is furnished with support spring 13 separately.Be not subjected to other external force to do the time spent, under the elastic force effect of spring 13, every baffle plate bar all is still in as the position among Fig. 1.Select the proper strength of spring 13, make to launch to the spoil 102 of spoil collection container 5 tops and can rush open corresponding baffle plate bar 12 and enter spoil collection container 5, the resilience damper that is equipped with by turning cylinder 14 simultaneously, make this baffle plate bar 12 return initial resting position, avoid because the quick bounce-back of spring 13 and spoil 102 is bounce back into the outside of spoil collection container 5 with appropriate speed.Rush open the synchronization of certain bar baffle plate bar 12 at spoil 102, may also have a small amount of coal 101 other adjacent screen bars of bump, can not rush open the baffle plate bar because kinetic energy and speed are less than normal, above-mentioned coal 101, and is finally fallen on the conveyer belt 11 of second ribbon conveyer to coal guide plate 6 along the landing of baffle plate bar.Though the spillplate 4 of said structure may cause part kinetic energy fritter spoil less than normal can not enter spoil collection container 5, but can guarantee especially bulk spoil of most of spoil 102() enter spoil collection container 5 smoothly, and stop that effectively coal 101 is strayed into spoil collection container 5, thereby in the process of getting rid of spoil 102, reduce the loss of coal resources to greatest extent.
Simultaneously for guaranteeing the production safety of spoil separation process, the danger of avoiding spoil 102 or coal 101 when bump spillplate 4, to produce spark, the present invention has taked the safety measure similar to run-of-mine coal (ROM coal) impacting body 1: (1) is provided with spray header 8 above spillplate 4, all baffle plate bars 12 are sprayed, suppress also in time to extinguish spark, reduce the dust that the bump back produces; (2) all baffle plate bars 12 are carried out surfacing, make the one side of each baffle plate bar 12, have and contain chromium or contain beryllium or contain the surface course of chromium and beryllium simultaneously towards run-of-mine coal (ROM coal) impacting body 1.
The design scheme of above-mentioned spillplate 4 only is a preferred embodiment, also can take following scheme during concrete enforcement: spillplate 4 need not to be equipped with spring 13 or resilience damper etc., when initial inactive state, be in vertical direction, by increasing quality to a suitable threshold of baffle plate bar 12, baffle plate bar 12 can be rushed open and can not be rushed open by coal 101 by sudden spoil 102, and the baffle plate bar 12 that is rushed open relies on himself gravity subsequently and rotates and get back to initial vertical state around turning cylinder.
In addition, first conveying device and second conveying device related in the above-mentioned specific embodiment of the present invention are ribbon conveyer, are preferred embodiment only, also can adopt when specifically implementing discontinuous formulas such as wagon box, coal bunker funnel, batch conveying device.
Simultaneously, spoil gathering-device related in the above-mentioned specific embodiment of the present invention adopts the spoil collection container, be preferred embodiment only also, also can adopt when specifically implementing continous way conveying device such as ribbon conveyer the spoil of separating is collected continuously and directly transhipment carry.
The above-mentioned specific embodiment is used for the present invention that explains; only be the preferred embodiments of the present invention; rather than limit the invention; in the protection domain of spirit of the present invention and claim; any modification that the present invention is made, be equal to replacement, improvement etc., all fall into protection scope of the present invention.

Claims (9)

1. separation method under the waste shaft is characterized in that making run-of-mine coal (ROM coal) to fall from eminence, on the run-of-mine coal (ROM coal) descent path, provides lateral impact power by the mode of clashing into to run-of-mine coal (ROM coal), and the distance that ejected by described impact force according to dropping is different, distinguishes coal and spoil in the run-of-mine coal (ROM coal).
2. separation method under the waste shaft as claimed in claim 1 is characterized in that it provides the run-of-mine coal (ROM coal) conveying device, and run-of-mine coal (ROM coal) is fallen from the material outlet of described run-of-mine coal (ROM coal) conveying device; The position that spoil in run-of-mine coal (ROM coal) is subjected to fall behind the described bump provides the spoil gathering-device; The position that coal in run-of-mine coal (ROM coal) is subjected to fall behind the described bump provides the coal conveying device.
3. separation method under the waste shaft as claimed in claim 2, it is characterized in that above described spoil gathering-device, providing rotating spillplate, make spoil can rely on self kinetic energy to rush open described spillplate and fall into described spoil gathering-device, make the dropping that relies on self kinetic energy can not rush open described spillplate be imported into described coal conveying device.
4. utilize the waste shaft lower separation device of the described method of claim 1, it is characterized in that it comprises first ribbon conveyer and second ribbon conveyer, described first ribbon conveyer is carried run-of-mine coal (ROM coal), described second ribbon conveyer is carried the coal behind the most of spoil of eliminating from run-of-mine coal (ROM coal), the material outlet of described first ribbon conveyer is higher than the conveyer belt of described second ribbon conveyer in vertical direction, between the conveyer belt of the material outlet of described first ribbon conveyer and described second ribbon conveyer, also be provided with the run-of-mine coal (ROM coal) impacting body of rotation, the axis of rotation level of described run-of-mine coal (ROM coal) impacting body and perpendicular to the throughput direction of first ribbon conveyer.
5. waste shaft lower separation device as claimed in claim 4, it is characterized in that ejection direction that spoil is clashed into by the run-of-mine coal (ROM coal) impacting body tiltedly below be provided with the spoil collection container; Clashed into by the run-of-mine coal (ROM coal) impacting body and the direction that falls is provided with the coal guide plate that material is imported the conveyer belt of second ribbon conveyer at coal.
6. as claim 4 or 5 described waste shaft lower separation devices, it is characterized in that the top of described spoil collection container is provided with towards the spillplate run-of-mine coal (ROM coal) impacting body, rotating, described spillplate can constitute around the baffle plate bar of turning cylinder independent rotation by many; The top of described spillplate is provided with spray header; Described spillplate is in the top of described coal guide plate, and described spillplate and described coal guide plate have material to import matching relationship.
7. waste shaft lower separation device as claimed in claim 6 is characterized in that the one side of described baffle plate bar towards the run-of-mine coal (ROM coal) impacting body, has to contain chromium or contain beryllium or contain the surface course of chromium and beryllium simultaneously.
8. waste shaft lower separation device as claimed in claim 4, the main body that it is characterized in that described run-of-mine coal (ROM coal) impacting body is a cylinder, and its surface has axial bump bar, and the top of described run-of-mine coal (ROM coal) impacting body is provided with spray header.
9. waste shaft lower separation device as claimed in claim 8, the surface that it is characterized in that described bump bar have and contain chromium or contain beryllium or contain the surface course of chromium and beryllium simultaneously.
CN 201010518120 2010-10-25 2010-10-25 Underground separation method and device for gangue Pending CN101979832A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 201010518120 CN101979832A (en) 2010-10-25 2010-10-25 Underground separation method and device for gangue
PCT/CN2011/074260 WO2012055233A1 (en) 2010-10-25 2011-05-18 Method and device for separating gangue under well

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Application Number Priority Date Filing Date Title
CN 201010518120 CN101979832A (en) 2010-10-25 2010-10-25 Underground separation method and device for gangue

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055233A1 (en) * 2010-10-25 2012-05-03 浙江大学 Method and device for separating gangue under well
WO2013178012A1 (en) * 2012-05-29 2013-12-05 Qin Yong Method for fluid carriage in deep-seam coal hydraulic mining
CN104033153A (en) * 2014-06-25 2014-09-10 中国矿业大学 Coal mine underground mining, dress and filling integral method
CN106881270A (en) * 2017-04-11 2017-06-23 四川南格尔生物科技有限公司 A kind of dropping funnel and waste material separation equipment and separate method
CN107051617A (en) * 2016-12-30 2017-08-18 重庆周义食品有限公司 Rice burnishing device
CN108372103A (en) * 2018-02-28 2018-08-07 合肥工业大学 A kind of screening plant in raw coal transportation equipment under mine
CN111053263A (en) * 2020-01-01 2020-04-24 张改丽 Processing treatment device behind matsutake

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GB997091A (en) * 1960-07-02 1965-06-30 Senih Guerel Machine for harvesting root crops
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CN86107139A (en) * 1986-10-23 1988-05-04 北京有色金属加工厂 Sparkless casting aluminium alloy
CN201195129Y (en) * 2008-05-22 2009-02-18 柳源 Rotary elastic bastard coal separation equipment
CN201371128Y (en) * 2009-03-06 2009-12-30 江苏鼎甲科技有限公司 Rebounding coal-gangue separation equipment
CN201950031U (en) * 2010-10-25 2011-08-31 浙江大学 Separating device for down-hole spoil

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Publication number Priority date Publication date Assignee Title
GB997091A (en) * 1960-07-02 1965-06-30 Senih Guerel Machine for harvesting root crops
US4375853A (en) * 1979-12-12 1983-03-08 Texas A & M University System Apparatus for separating clods and agricultural products
CN86107139A (en) * 1986-10-23 1988-05-04 北京有色金属加工厂 Sparkless casting aluminium alloy
CN201195129Y (en) * 2008-05-22 2009-02-18 柳源 Rotary elastic bastard coal separation equipment
CN201371128Y (en) * 2009-03-06 2009-12-30 江苏鼎甲科技有限公司 Rebounding coal-gangue separation equipment
CN201950031U (en) * 2010-10-25 2011-08-31 浙江大学 Separating device for down-hole spoil

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012055233A1 (en) * 2010-10-25 2012-05-03 浙江大学 Method and device for separating gangue under well
WO2013178012A1 (en) * 2012-05-29 2013-12-05 Qin Yong Method for fluid carriage in deep-seam coal hydraulic mining
CN104033153A (en) * 2014-06-25 2014-09-10 中国矿业大学 Coal mine underground mining, dress and filling integral method
CN107051617A (en) * 2016-12-30 2017-08-18 重庆周义食品有限公司 Rice burnishing device
CN107051617B (en) * 2016-12-30 2018-09-21 重庆周义食品有限公司 Rice burnishing device
CN106881270A (en) * 2017-04-11 2017-06-23 四川南格尔生物科技有限公司 A kind of dropping funnel and waste material separation equipment and separate method
CN108372103A (en) * 2018-02-28 2018-08-07 合肥工业大学 A kind of screening plant in raw coal transportation equipment under mine
CN111053263A (en) * 2020-01-01 2020-04-24 张改丽 Processing treatment device behind matsutake
CN111053263B (en) * 2020-01-01 2022-07-15 张改丽 Processing treatment device behind matsutake

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Application publication date: 20110223