CN109100195A - A kind of coal sample automatic sample-making system and method - Google Patents
A kind of coal sample automatic sample-making system and method Download PDFInfo
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- CN109100195A CN109100195A CN201811258025.6A CN201811258025A CN109100195A CN 109100195 A CN109100195 A CN 109100195A CN 201811258025 A CN201811258025 A CN 201811258025A CN 109100195 A CN109100195 A CN 109100195A
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- sample
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- coal
- crushing device
- discharge port
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
Abstract
The invention discloses a kind of coal sample automatic sample-making system and methods, and including the feed device connecting with the first crushing device, the first crushing device is connect with the first reduction device;File for reference respectively with full water sample sample bottle installation, rejected material device and the second crushing device of first reduction device is connect, and the second crushing device is connect with the second reduction device, the discharging-material size of the discharging-material size of the second crushing device less than the first crushing device;Second reduction device is filed for reference with full water sample respectively, and sample bottle is installed, rejected material device and apparatus for temporary storage are connect, and apparatus for temporary storage is connect with sequentially dry with drying device, and drying device is connect with third reduction device;Third reduction device is connect with third crushing device, third crushing device is connect with the 4th reduction device, for the discharging-material size of third crushing device less than the discharging-material size of the second crushing device, the 4th reduction device and analysis sample bottle installation connection obtain at least a analysis sample and at least a sample for future reference.The system and method remove sample preparation screening link, it can be achieved that coal sample automatic preparation.
Description
Technical field
The present invention relates to coal sample sample making technology fields to further relate to more specifically to a kind of coal sample automatic sample-making system
A kind of coal sample automatic sample method.
Background technique
Sample preparation is the process for making coal sample reach analysis or trystate.Sample preparation includes being crushed, mixing, division, sometimes
It further include sieving and being air-dried.Generally, sample preparation eventually prepare a total moisture coal sample, portion file for reference coal sample,
A general analysis sample.The sample preparation process of the prior art are as follows: (1) coal sample is first crushed to 6mm, and it is complete that division goes out portion >=1.25kg
Water sample, portion >=3.75kg keep sample;(2) keep sample and sieved with 3mm round-hole mesh, oversize continues to be crushed, until all passing through circular hole
Sieve;(3) go out from the middle division that keeps sample after screening >=700g as filing for reference sample, continue division and go out >=100g, be placed on temperature and meet
It is required that drying box in it is dry;(4) it will keep sample after drying and be crushed to 0.2mm, sieved with 0.2mm standard screen, oversize continues brokenly
It is broken, until all passing through standard screen.
Prior art sieves link, oversize repeat it is broken, screening by having been manually done, equipment realize the function compared with
Complexity can not be automatically performed by equipment.Using prior art as automatic flow, since drying time is longer, coal sample preparation
Time is longer, and a coal sample preparation completes that next coal sample, sample preparation low efficiency can be prepared.
Summary of the invention
In view of this, the first purpose of this invention is to provide a kind of coal sample automatic sample-making system, to solve existing coal
Sample preparation system repeats the problem of crushing and screening, longevity of service and sample preparation low efficiency, a second object of the present invention is to provide
A kind of coal sample automatic sample method.
In order to reach above-mentioned first purpose, the invention provides the following technical scheme:
A kind of coal sample automatic sample-making system, comprising:
For the feed device of coal sample feeding, the feed inlet of the discharge port of the feed device and the first crushing device connects
It connects, the discharge port of first crushing device is connect with the first reduction device;
The discharge port of first reduction device is filed for reference with full water sample sample bottle installation, rejected material device and the second crushing device respectively
Connection, the discharge port of second crushing device are connect with the second reduction device, and the discharging-material size of second crushing device is less than
The discharging-material size of first crushing device;
The discharge port of second reduction device is filed for reference with the full water sample sample bottle installation, the rejected material device and temporary respectively
Device connection, the discharge port of the apparatus for temporary storage connect with drying device with sequentially dry, the discharge port of the drying device and
The connection of third reduction device;
The third reduction device is connect with the feed inlet of third crushing device, the discharge port of the third crushing device and
The connection of four reduction devices, the discharging-material size of the third crushing device are less than the discharging-material size of second crushing device, and described the
The discharge port of four reduction devices and analysis sample bottle installation connection obtain at least a analysis sample and at least a sample for future reference.
Preferably, the feed device includes the feeder and level-one connected to it feed for carrying out feeding to coal sample
The feed inlet of machine, the level-one batcher is connect with the discharge port of the feeder, the discharge port of the level-one batcher and institute
State the feed inlet connection of the first crushing device.
Preferably, first crushing device is specially 6mm crusher, and second crushing device is specially 3mm broken
Machine, the third crushing device is specially flour mill.
Preferably, the third reduction device and the 4th reduction device are respectively riffle.
Preferably, it is equipped between first reduction device and second crushing device and promotes dress for the first of material conveying
It sets, first lifting device is specially Z-type elevator;
The second lifting device for material conveying is equipped between the drying device and the third reduction device.
Preferably, it is equipped between the third crushing device and the 4th reduction device and takes out material for the vacuum of material conveying
Machine.
Preferably, the third reduction device includes the discharge port that at least one can keep in coal sample.
Based on the above system embodiment, the present invention also provides a kind of coal sample automatic sample methods, comprising:
By coal sample reduction to the first coal sample;
Division is carried out to the first coal sample, at least a full water sample is obtained and portion first keeps sample;
Described first is kept sample and is crushed to the second coal sample, the granularity of second coal sample is less than the grain of first coal sample
Degree;
Division is carried out to the second coal sample is crushed to, obtains that at least portion files for reference sample and portion second keeps sample;
Described second is kept sample temporary, and progress sequence is dry, and described second after drying is kept sample and carries out two points of divisions,
Obtain third coal sample and the 4th coal sample;
The third coal sample is crushed to obtain the 5th coal sample, and is discarded the 5th coal sample as cleaning sample;
4th coal sample is crushed to obtain the 6th coal sample, two points of divisions are carried out to the 6th coal sample again, are obtained
Portion first analyzes sample and a first sample for future reference, and the 5th coal sample is identical with the granularity of the 6th coal sample and respectively less than institute
State the granularity of the second coal sample.
Preferably, the granularity of first coal sample is 6mm, and the granularity of second coal sample is 3mm, the 5th coal sample and
The granularity of 6th coal sample is respectively 0.2mm.
Coal sample automatic sample-making system provided by the invention, including the feed device for coal sample feeding, feed device goes out
Material mouth is connect with the feed inlet of the first crushing device, and the discharge port of the first crushing device is connect with the first reduction device;
The discharge port of first reduction device is filed for reference with full water sample respectively, and sample bottle is installed, rejected material device and the second crushing device connect
It connects, the discharge port of the second crushing device is connect with the second reduction device, and the discharging-material size of the second crushing device is less than the first broken dress
The discharging-material size set;
The discharge port of second reduction device is filed for reference with full water sample respectively, and sample bottle is installed, rejected material device and apparatus for temporary storage are connect, temporarily
The discharge port of cryopreservation device is connect with sequentially dry with drying device, and the discharge port of drying device is connect with third reduction device;
Third reduction device is connect with the feed inlet of third crushing device, the discharge port of third crushing device and the 4th reduction device
Connection, the discharging-material size of third crushing device less than the second crushing device discharging-material size, the discharge port of the 4th reduction device with point
Analysis sample bottle installation connection obtains at least a analysis sample and at least a sample for future reference.
Using coal sample automatic sample-making system provided by the invention and method, by the first crushing device to coal sample reduction to
One coal sample goes out full water sample through the first reduction device division and portion keeps sample, and the first coal sample is obtained through the second crushing device is broken
Second coal sample goes out to file for reference sample by the second reduction device division to the second coal sample and portion second keeps sample, and keeps sample to second and pass through
Apparatus for temporary storage is temporary, is lined up dry by drying device sequence, to save drying time, is by the division that keeps sample of second after drying
Two parts, third coal sample and the 4th coal sample, third coal sample through broken the 5th coal sample that obtains of third crushing device as cleaning sample, the 4th
Coal sample obtains the 6th coal sample and division obtains portion first and analyzes sample and the first sample for future reference, the system through third crushing device is broken
Remove sample preparation screening link, it can be achieved that coal sample automatic preparation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of schematic view of the front view of coal sample automatic sample-making system provided in an embodiment of the present invention;
Fig. 2 is the overlooking structure diagram of Fig. 1.
It is marked in attached drawing as follows:
Feeder 1, level-one batcher 2, the first crushing device 3, the first reduction device 4, rejected material device 5, full water sample are filed for reference sample
Bottling machine 6, Z-type elevator 7, the second crushing device 8, the second reduction device 9, apparatus for temporary storage 10, drying device 11, second promote dress
It sets 12, third reduction device 13, flour mill 14, vacuum and takes out material machine 15, the 4th reduction device 16, analysis sample bottle installation 17.
Specific embodiment
The embodiment of the invention discloses a kind of coal sample automatic sample-making systems, repeat to be crushed to solve existing coal sample preparation system
The problem of screening, longevity of service and sample preparation low efficiency.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-Fig. 2 is please referred to, Fig. 1 is that a kind of front view structure of coal sample automatic sample-making system provided in an embodiment of the present invention is shown
It is intended to;Fig. 2 is the overlooking structure diagram of Fig. 1.
It with the discharging-material size of the first crushing device is 6mm, the second crushing device goes out in a kind of specific embodiment
Material granularity is 3mm, the granularity of third crushing device is illustrated for being 0.2mm, in other embodiments, the first broken dress
Set, the granularity of the second crushing device and third crushing device can according to actual needs and professional standard is configured, in this hair
In bright protection scope.
Wherein, coal sample automatic sample-making system provided by the invention, including the feed device for coal sample feeding, feed device
Discharge port connect with the feed inlet of the first crushing device 3, the discharging-material size of the first crushing device 3 is 6mm, the first crushing device
3 discharging-material size can be in a certain range section, within the scope of 1-6mm, and the first crushing device 3 can be specially crusher, according to work
Industry cost selects suitable crusher, is a kind of existing equipment of maturation, can be configured according to actual needs, and first is broken
The discharge port of device 3 is connect with the first reduction device 4, the first reduction device 4 to 6mm keep sample coal sample carry out division.
The discharge port of first reduction device 4 is filed for reference with full water sample sample bottle installation 6, rejected material device 5 and the second crushing device 8 respectively
Connection, the first reduction device 4 include at least three discharge ports, and the first discharge port and full water sample sample bottle of filing for reference install and 6 connect to obtain one
Part full water sample, in other embodiments, settable multiple discharge ports and full water sample sample bottle of filing for reference install and 6 connect to obtain more parts of full water
Sample can be configured as needed, and the second discharge port is connect with rejected material device 5, and rejected material device 5 is preferably rejected material belt feeder, when
So, in other embodiments, it also can according to need and voluntarily select suitable rejected material device 5.Third discharge port and second is crushed
Device 8 connects, and the second crushing device 8 may also preferably be crusher, and the discharging-material size of the second crushing device 8 is 3mm, and second is broken
The discharge port of device 8 is connect with the second reduction device 9, and the second reduction device 9 carries out division to broken 3mm coal sample.
File for reference respectively with full water sample sample bottle installation 6, rejected material device 5 and apparatus for temporary storage 10 of the discharge port of second reduction device 9 connects
It connects, it is to be understood that the second reduction device 9 includes at least three discharge ports, and the first discharge port and full water sample are filed for reference sample bottle installation 6
Connection obtains portion and files for reference sample, and the quantity for sample of filing for reference can be configured according to actual needs, also can be set multiple discharge ports with
Full water sample is filed for reference 6 connection of sample bottle installation, obtains more parts of samples of filing for reference, the second discharge port connect with rejected material device 5 and carries out abandoning sample, third
Discharge port is connect with apparatus for temporary storage 10, is kept sample by setting apparatus for temporary storage 10 to 3mm and is kept in, the discharge port of apparatus for temporary storage 10
It is connect with drying device 11 with sequentially dry, raising sample preparation efficiency, the discharge port of drying device 11 is connect with third reduction device 13;
Third reduction device 13 carries out division to 3mm coal sample.
Third reduction device 13 is connect with the feed inlet of third crushing device, the discharge port of third crushing device and the 4th division
Device 16 connects, and the discharging-material size of third crushing device is 0.2mm, and the discharge port of the 4th reduction device 16 and analysis sample bottle installation 17 connect
Connect to obtain at least a analysis sample and at least a sample for future reference.
Using coal sample automatic sample-making system provided by the invention and method, by the first crushing device to coal sample reduction to
One coal sample goes out full water sample through the first reduction device division and portion keeps sample, and the first coal sample is obtained through the second crushing device is broken
Second coal sample goes out to file for reference sample by the second reduction device division to the second coal sample and portion second keeps sample, and keeps sample to second and pass through
Apparatus for temporary storage is temporary, is lined up dry by drying device sequence, to save drying time, is by the division that keeps sample of second after drying
Two parts, third coal sample and the 4th coal sample, third coal sample through broken the 5th coal sample that obtains of third crushing device as cleaning sample, the 4th
Coal sample obtains the 6th coal sample and division obtains portion first and analyzes sample and the first sample for future reference, the system through third crushing device is broken
Remove sample preparation screening link, it can be achieved that coal sample automatic preparation.
In one embodiment, to coal sample reduction to 6mm, division goes out full water sample and portion keeps sample, and will keep sample and be crushed to
3mm, division goes out to file for reference sample and portion keeps sample, and temporary by apparatus for temporary storage 10 to keeping sample for 3mm division, is lined up through dry dress
It is dry to set 11 sequences, is two parts by coal sample division after drying to save drying time, portion is crushed to 0.2mm and is used as cleaning sample,
Another is crushed to 0.2mm and division obtains a analysis sample and sample for future reference, which takes out sample preparation screening link, it can be achieved that coal
The automatic preparation of sample.
Specifically, feed device includes the feeder 1 and level-one batcher connected to it for carrying out feeding to coal sample
2, the feed inlet of level-one batcher 2 is connect with the discharge port of feeder 1, the discharge port of level-one batcher 2 and the first crushing device 3
Feed inlet connection.Coal sample is promoted at position corresponding with the feed inlet of level-one batcher 2 by feeder 1, feeder 1
It can be realized by way of struggling against and lifting assembly combines, lifting assembly is preferably that the mode that cylinder or chain are driven is real
It is existing, it is within the scope of the invention.
Further, the first crushing device 3 is specially 6mm crusher, and the second crushing device 8 is specially 3mm crusher, the
Three crushing devices are specially flour mill 14.The structure and installation site of flour mill 14 can be configured according to the prior art, herein
It does not carry and repeats.
Further, third reduction device 13 and the 4th reduction device 16 are respectively riffle.Preferably, third reduction device
13 include that at least one can keep in the discharge port of coal sample.The discharge port of third reduction device 13 realizes that coal sample is temporary, first part of coal
Sample is by flour mill 14 and the 4th reduction device 16 to analysis sample bottle installation 17, and as cleaning sample, second part of coal sample passes through the 4th contracting
Being divided to 16 division of device is two parts, and portion is that 0.2mm analyzes sample, and portion is 0.2mm sample for future reference.
Wherein, it is equipped between the first reduction device 4 and the second crushing device 8 and is used for the first lifting device that material conveys, first
Lifting device is specially Z-type elevator 7;
The second lifting device 12 for material conveying is equipped between drying device 11 and third reduction device 13.Second promotes dress
Setting 12 may be set to be elevator, the first lifting device and the second lifting device 12 can according to prior art development level into
Row setting, is within the scope of the invention.
Preferably, it is equipped between third crushing device and the 4th reduction device 16 and takes out material machine 15 for the vacuum of material conveying.It is logical
It crosses vacuum and takes out the conveying that material machine 15 connect realization coal sample with flour mill 14.In other embodiments, it is suitable voluntarily to select
Suction unit realize suction to flour mill 14.
In one embodiment, specific sample preparation process are as follows:
For coal sample reduction to 6mm, division goes out a full water sample for being more than or equal to 1.25kg, and portion is stayed more than or equal to 3.75kg's
Sample;
It will keep sample and be crushed to 3mm, division goes out a file for reference sample and a 3mm for being more than or equal to 400g more than or equal to 700g
Keep sample;
3mm is kept sample and is kept in by apparatus for temporary storage 10, and is lined up and is dried, drying temperature meets sample preparation requirement;
It is two parts by the coal sample division after drying, portion is crushed to 0.2mm as cleaning sample, discards;Another is crushed to
0.2mm keeps sample as 0.2mm;
The 0.2mm division that keeps sample is gone out two parts, portion analyzes sample as 0.2mm, another is as 0.2mm sample for future reference;
To sum up, which finally prepares a full water sample, file for reference sample, portion 0.2mm of portion analyzes sample and portion
0.2mm sample for future reference, and in embodiment, more parts of full water samples and more parts of samples of filing for reference can be prepared as needed, to its specific number
Without limiting.
Based on the above system embodiment, the present invention also provides a kind of embodiments of the method, comprising:
A kind of coal sample automatic sample method, comprising:
By coal sample reduction to the first coal sample;
Division is carried out to the first coal sample, at least a full water sample is obtained and portion first keeps sample;
By first keep sample it is broken obtain the second coal sample, the granularity of the granularity of the second coal sample less than the first coal sample;
Division is carried out to the second coal sample, obtains that at least portion files for reference sample and portion second keeps sample;
Second is kept sample temporary, and progress sequence is dry, and second after drying is kept sample and carries out two points of divisions, obtains third
Coal sample and the 4th coal sample;
Third coal sample is crushed to obtain the 5th coal sample, and is discarded the 5th coal sample as cleaning sample;
4th coal sample is crushed to obtain the 6th coal sample, two points of divisions are carried out again to the 6th coal sample, obtains portion first
Analyze sample and a first sample for future reference, the 5th coal sample is identical with the granularity of the 6th coal sample and the granularity of respectively less than the second coal sample.
Preferably, the granularity of the first coal sample is 6mm, and the granularity of second coal sample is 3mm, the 5th coal sample and the 6th coal sample
Granularity be respectively 0.2mm.
Using coal sample automatic sample-making system provided by the invention and method, to coal sample reduction to the first coal sample, division is complete out
Water sample and portion keep sample, and the first coal sample reduction is obtained the second coal sample, file for reference out to the second coal sample division sample and portion second
Keep sample, and it is temporary by apparatus for temporary storage to keep sample to second, is lined up through the drying of drying device sequence, it, will to save drying time
Second after the drying division that keeps sample is two parts, and portion is broken to obtain the 5th coal sample as cleaning sample, another is broken to obtain the 6th
Coal sample and division obtain portion first and analyze sample and the first sample for future reference, which removes sample preparation screening link, it can be achieved that coal sample
Automatic preparation.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of coal sample automatic sample-making system characterized by comprising
For the feed device of coal sample feeding, the discharge port of the feed device is connect with the feed inlet of the first crushing device, institute
The discharge port for stating the first crushing device is connect with the first reduction device;
The discharge port of first reduction device is filed for reference with full water sample respectively, and sample bottle is installed, rejected material device and the second crushing device connect
It connects, the discharge port of second crushing device is connect with the second reduction device, and the discharging-material size of second crushing device is less than institute
State the discharging-material size of the first crushing device;
The discharge port of second reduction device is filed for reference with the full water sample sample bottle installation, the rejected material device and apparatus for temporary storage respectively
Connection, the discharge port of the apparatus for temporary storage are connect with sequentially dry with drying device, the discharge port and third of the drying device
Reduction device connection;
The third reduction device is connect with the feed inlet of third crushing device, the discharge port of the third crushing device and the 4th contracting
Divide device connection, the discharging-material size of the third crushing device is less than the discharging-material size of second crushing device, the 4th contracting
The discharge port and analysis sample bottle installation connection for dividing device obtain at least portion analysis sample and at least a sample for future reference.
2. coal sample automatic sample-making system according to claim 1, which is characterized in that the feed device includes for coal
Sample carries out the feeder and level-one batcher connected to it of feeding, feed inlet and the feeder of the level-one batcher
Discharge port connection, the discharge port of the level-one batcher are connect with the feed inlet of first crushing device.
3. coal sample automatic sample-making system according to claim 2, which is characterized in that first crushing device is specially
6mm crusher, second crushing device are specially 3mm crusher, and the third crushing device is specially flour mill.
4. coal sample automatic sample-making system according to claim 3, which is characterized in that the third reduction device and the described 4th
Reduction device is respectively riffle.
5. coal sample automatic sample-making system according to claim 4, which is characterized in that first reduction device and described second
The first lifting device for material conveying is equipped between crushing device, first lifting device is specially Z-type elevator;
The second lifting device for material conveying is equipped between the drying device and the third reduction device.
6. coal sample automatic sample-making system according to claim 5, which is characterized in that the third crushing device and described the
It is equipped between four reduction devices and takes out material machine for the vacuum of material conveying.
7. coal sample automatic sample-making system according to claim 6, which is characterized in that the third reduction device includes at least one
A discharge port that can keep in coal sample.
8. a kind of coal sample automatic sample method characterized by comprising
By coal sample reduction to the first coal sample;
Division is carried out to the first coal sample, at least a full water sample is obtained and portion first keeps sample;
Described first is kept sample to be crushed and obtains the second coal sample, the granularity of second coal sample is less than the granularity of first coal sample;
Division is carried out to the second coal sample, obtains that at least portion files for reference sample and portion second keeps sample;
Described second is kept sample temporary, and progress sequence is dry, and described second after drying is kept sample and carries out two points of divisions, is obtained
Third coal sample and the 4th coal sample;
The third coal sample is crushed to obtain the 5th coal sample, and is discarded the 5th coal sample as cleaning sample;
4th coal sample is crushed to obtain the 6th coal sample, two points of divisions are carried out to the 6th coal sample again, obtain portion
First analysis sample and a first sample for future reference, the 5th coal sample are identical with the granularity of the 6th coal sample and respectively less than described the
The granularity of two coal samples.
9. coal sample automatic sample method according to claim 8 characterized by comprising
The granularity of first coal sample is 6mm, and the granularity of second coal sample is 3mm, the 5th coal sample and the 6th coal
The granularity of sample is respectively 0.2mm.
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109499731A (en) * | 2019-01-14 | 2019-03-22 | 香农工业设备制造南京有限公司 | Applied to ore class or the automatic grinding machine of coal class raw material |
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