CN115970882B - Regulation and control method - Google Patents
Regulation and control method Download PDFInfo
- Publication number
- CN115970882B CN115970882B CN202310262278.5A CN202310262278A CN115970882B CN 115970882 B CN115970882 B CN 115970882B CN 202310262278 A CN202310262278 A CN 202310262278A CN 115970882 B CN115970882 B CN 115970882B
- Authority
- CN
- China
- Prior art keywords
- sorting
- tail
- medium
- mismatch rate
- concentrate
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000012360 testing method Methods 0.000 claims abstract description 49
- 239000003245 coal Substances 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 238000005303 weighing Methods 0.000 claims abstract description 15
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 239000012141 concentrate Substances 0.000 claims description 124
- 238000000926 separation method Methods 0.000 claims description 88
- 230000007246 mechanism Effects 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000006148 magnetic separator Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 5
- 230000003750 conditioning effect Effects 0.000 claims 1
- 210000000582 semen Anatomy 0.000 claims 1
- 239000000047 product Substances 0.000 description 223
- 239000000463 material Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 241000287196 Asthenes Species 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000003250 coal slurry Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 101100356682 Caenorhabditis elegans rho-1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention provides a regulation and control method, and relates to the technical field of coal sorting. The invention provides a regulating and controlling method, which comprises the following steps: s1, carrying out a floating and sinking test on a product obtained by the sorting device and obtaining a plurality of product components with different densities; s2, sequentially weighing all the product components obtained in the step S1, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting device in real time according to the mismatch rate; wherein the mismatch ratio is the quotient of the mass of the product component and the total mass of the product, which is not in the preset density interval. The mismatch rate of the products of the sorting device is calculated according to the density and the quality of all the product components obtained by the sorting device, and the sorting parameters of the sorting device are adjusted according to the mismatch rate.
Description
Technical Field
The invention relates to the technical field of coal sorting, in particular to a regulating and controlling method.
Background
The heavy medium separation is a common separation method in coal preparation plants, namely separation is carried out in a medium with density larger than that of water, and the heavy medium separation is a process strictly according to the density.
In general, the separation effect of the dense medium cyclone is usually achieved by adopting a density regulation mode, namely, whether the density of the separation medium accords with a preset density is judged, and the density of the separation medium is regulated. However, the sorting effect of the dense-medium cyclone is often affected by factors such as not only sorting density, but also viscosity, feeding pressure and the like of the sorting medium, so that the problem that feedback cannot be obtained due to the influence of other factors on a sorting structure can occur only by adjusting the density of the sorting medium through density feedback of the sorting medium, and the final sorting result is affected.
Disclosure of Invention
The invention solves the problems that: the existing dense medium cyclone is regulated and controlled only by the density of the separation medium, so that the influence of other factors on the separation result cannot be fed back, and the final separation result is influenced.
(II) technical scheme
In order to solve the above technical problems, an embodiment of the present invention provides a regulation method, including the steps of:
s1, carrying out a floating and sinking test on a product obtained by the sorting device and obtaining a plurality of product components with different densities;
s2, sequentially weighing all the product components obtained in the step S1, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting device in real time according to the mismatch rate;
Wherein the mismatch ratio is the quotient of the mass of the product component and the total mass of the product, which is not in the preset density interval.
Further, the products include concentrate products and tailings products;
and step S1, weighing all the product components obtained in the step S sequentially, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting device in real time according to the mismatch rate, wherein the step S comprises the following steps:
s21, sequentially weighing all concentrate product components, and recording the mass of all concentrate product components
…/>
The method comprises the steps of carrying out a first treatment on the surface of the Sequentially weighing all tailing product components, and recording the mass of all tailing product components>
…/>
；
Wherein n is more than or equal to 2;
s22, calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail;
wherein the sum of the mass of all the concentrate product components not in the preset density interval is set as
Then the tail mismatch rate in essence +.>
；
Setting the mass sum of the tailing product components which are not in the preset density interval as
Fine mismatch rate in tail 
。
Further, the floating and sinking test is carried out by a floating and sinking instrument, and the floating and sinking instrument comprises a conveying mechanism, a separation pool and a plurality of medium cavities; each medium cavity is communicated with the separation pond through a conveying mechanism, the conveying mechanism can convey separation mediums to and fro between the separation pond and the medium cavities, and the densities of the separation mediums stored in each medium cavity are different;
the step of carrying out a floating and sinking test on the product obtained by the sorting device and obtaining a plurality of product components with different densities comprises the following steps:
s11, conveying the sorting medium in one medium cavity into a sorting pool through a conveying mechanism;
s12, conveying the products into a separation pool;
s13, fishing out the product which is sunk into the separation pool and obtaining a product component;
s14, conveying the sorting media in the sorting pool back to the corresponding media cavity through a conveying mechanism;
s15, repeating the steps S11, S13 and S14 until the product test is completed; the conveying mechanism sequentially conveys the sorting media into the sorting pool according to the order of the density of the sorting media from high to low.
Further, the density of the concentrate product is less than the density of the tailings product;
setting and sorting deviceThe density interval of the sorting medium is
The actual density of the sorting medium is ρ;
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail comprises the following steps:
monitoring the actual density ρ of the sorting medium when
When or when->
At the same time, the theoretical autonomous regulation step length of the sorting medium is regulated>
To the sorting medium, the actual autonomous adjustment step size +.>
;
Wherein,,
；
a is the density step length adjustment coefficient of the sorting medium, and a is more than 1.
Further, the tail mismatch rate threshold in the sperm is set as
The threshold of the mismatching rate of essence in tail is +.>
；
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
when (when)
And->
At this time, the sorting medium density ρ is adjusted to +.>
；
When (when)
And->
At this time, the sorting medium density ρ is adjusted to +.>
。
Further, the feeding concentration interval of the sorting device is set as 
The actual feeding concentration of the sorting device is C;
the step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
monitoring the actual feeding concentration C of the sorting device when
When or when->
During the process, the theoretical automatic adjustment step of the concentration of the feeding materials of the sorting device is adjustedLength->
To the actual autonomous regulation step +.>
;
Wherein,,
；
b is the adjustment coefficient of the concentration step length of the feeding material of the sorting device, and b is more than 1.
Further, the actual feeding pressure of the sorting device is set as
Theoretical feeding pressure P of the sorting device;
the step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
when (when)
、/>
And->
During this, the theoretical feed pressure P of the sorting device is adjusted to the actual feed pressure +. >
Wherein->
；
When (when)
、/>
And->
During this, the theoretical feed pressure P of the sorting device is adjusted to the actual feed pressure +.>
Wherein->
；
Wherein,,
the step length is adjusted for the feeding pressure of the sorting device.
Further, the separation medium used in the separation is a mixed solution of magnetite powder, coal slime and water, after the separation is completed, part of the separation medium is shunted into a magnetic separator, the theoretical shunting flow of the separation medium is set as Q, and the actual shunting flow of the separation medium is set as
；
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
when (when)
At this time, the theoretical split flow Q of the sorting medium is adjusted to the actual split flow Q of the sorting medium +.>
；
Wherein,,
，d＞1；
d is the flow-dividing flow step length adjustment coefficient of the sorting medium.
Further, the sorting device is a cyclone.
Further, the method further comprises the steps of:
when (when)
When the content of the tailing products in the concentrate products is too high, the sorting device alarms;
when (when)
And when the content of concentrate products in the tailing products is too high, the sorting device alarms.
The invention has the beneficial effects that:
the invention provides a regulating and controlling method, which comprises the following steps:
s1, carrying out a floating and sinking test on a product obtained by the sorting device and obtaining a plurality of product components with different densities;
s2, sequentially weighing all the product components obtained in the step S1, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting device in real time according to the mismatch rate;
wherein the mismatch ratio is the quotient of the mass of the product component and the total mass of the product, which is not in the preset density interval.
The mismatch rate of the products of the sorting device is calculated according to the density and the quality of all the product components obtained by the sorting device, and the sorting parameters of the sorting device are adjusted according to the mismatch rate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a control method according to an embodiment of the present invention;
fig. 2 is a flowchart in step S1 of fig. 1;
fig. 3 is a flowchart in step S2 of fig. 1;
FIG. 4 is a process flow diagram of a sorting system according to an embodiment of the present invention;
fig. 5 is a process flow diagram of the sink-float apparatus according to the embodiment of the present invention.
Icon: 1-a sorting device; 11-a cyclone;
21-a separation tank; 22-a conveying mechanism; 23-medium cavity; 24-a second storage bucket; 25-a fishing assembly;
31-a first media removal mechanism; 32-a mixing barrel; 33-a second media removal mechanism; 34-a first bucket; 35-magnetic separator.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be noted that, in the description of the present invention, the terms "connected" and "mounted" should be understood in a broad sense, and for example, may be a fixed connection, a detachable connection, or an integral connection; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 to 3, the embodiment of the present invention provides a control method for controlling the sorting parameters of the sorting device 1 in real time.
In the present embodiment, the sorting apparatus 1 is specifically a cyclone 11.
As shown in fig. 1, the method for regulating and controlling according to the embodiment of the present invention includes the steps of:
s1, carrying out a floating and sinking test on the product obtained by the sorting device 1 and obtaining a plurality of product components with different densities;
s2, sequentially weighing all the product components obtained in the step S1, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting device 1 in real time according to the mismatch rate;
wherein the mismatch ratio is the quotient of the mass of the product component and the total mass of the product, which is not in the preset density interval.
In this example, the mismatch ratio, i.e., the quotient of the sum of the mass of the product components and the sum of the mass of the total product components, which do not meet the specified density range, is calculated for all the product components.
In this embodiment, after sorting by the sorting device 1, a product is obtained, the obtained product is subjected to a sink-float test by a sink-float meter, a plurality of product components with different densities are obtained after the sink-float test, the mismatch rate of the sorted product by the sorting device 1 can be calculated according to the quality and density of the product components, and the sorting parameters of the sorting device 1 are adjusted according to the mismatch rate, so that the sorting result accuracy of the sorting device 1 is ensured.
The sorting parameters of the sorting device 1 include density of the sorting medium, feeding pressure of the material to be sorted, feeding concentration of the material to be sorted, and flow dividing flow of the sorting medium, which will be described in detail below.
According to the mismatch rate of the products sorted by the sorting device 1, whether the sorting index of the sorting device 1 meets the preset requirement can be judged, if yes, the sorting parameters of the sorting device 1 do not need to be adjusted, and if not, the sorting parameters of the sorting device 1 need to be adjusted.
Compared with the prior art, the regulation and control method provided by the embodiment of the invention can avoid the problem that the influence of other factors on the sorting structure can not be fed back when the density of the sorting medium is regulated only by the density feedback of the sorting medium, and the sorting precision is high.
In this embodiment, the products sorted by the sorting device 1 are separated into concentrate products and tailing products, and part of tailings are mixed in the concentrate products under the influence of the sorting index of the sorting device 1; similarly, in the tailing products, part of concentrate is mixed.
Taking the sorting of raw coal as an example, after the raw coal is sorted by the sorting device 1, clean coal and gangue are obtained, wherein the clean coal is used as concentrate, and the gangue is used as tailings.
In the embodiment, when in use, the concentrate product and the tailing product are respectively conveyed into a floating and sinking instrument for automatic floating and sinking test.
As shown in fig. 2, in the step of weighing all the product components obtained in the step S1 in sequence, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting apparatus 1 in real time according to the mismatch rate, the steps include:
s21, sequentially weighing all concentrate product components, and recording the mass of all concentrate product components
…/>
The method comprises the steps of carrying out a first treatment on the surface of the Sequentially weighing all tailing product components, and recording the mass of all tailing product components>
…/>
；
Wherein n is more than or equal to 2;
s22, calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device 1 according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail;
Wherein the sum of the mass of all the concentrate product components not in the preset density interval is set as
Then the tail mismatch rate in essence +.>
；
Setting the mass sum of the tailing product components which are not in the preset density interval as
Fine mismatch rate in tail
。
Wherein, when the floating and sinking instrument performs floating and sinking test, at least two product components with different densities are obtained, so n is more than or equal to 2. According to the regulation and control method provided by the embodiment, when the regulation and control method is used, materials to be separated are conveyed into the separation device 1, the materials to be separated are separated through the separation device 1, concentrate products and tailing products are obtained after separation, the separation device 1 is provided with corresponding product outlets, and the concentrate products and the tailing products are discharged out of the separation device 1 through the corresponding product outlets. Afterwards, the concentrate product and the tailing product obtained by the separation device 1 are subjected to a floating test, and the concentrate obtained by each floating testThe product ingredients/tailings product ingredients were weighed. Taking concentrate products as an example, weighing concentrate product components with different densities sequentially after a floating and sinking test, recording the quality of all the concentrate product components, and sequentially
…/>
The method comprises the steps of carrying out a first treatment on the surface of the Because two sinkers are necessarily obtained by performing a floating and sinking test, n is at least equal to 2; for example, when three floating tests are performed, four sinkers are obtained, and the sinkers are +. >
、/>
、
And->
。
After the floating test of the concentrate product and the tailing product is completed and the obtained concentrate product components and the tailing product components are weighed and recorded, the tail mismatch rate in the concentrate is calculated according to the concentrate product components with different densities, and the tail mismatch rate in the concentrate is calculated according to the tailing product components with different densities. And then, according to the tail mismatch rate in the tail and the tail mismatch rate in the tail, the sorting parameters of the sorting device 1 are adjusted in real time.
In this example, the flotation test for concentrate products and the flotation test for tailings products used the same sorting media.
In the present embodiment, a sink-and-float apparatus is required for use in conducting a sink-and-float test, wherein the sink-and-float apparatus includes a separation tank 21 for conducting a sink-and-float test and a medium chamber 23 for storing separation media of different densities.
Taking three float and sink tests for concentrate products as an example, the density of the concentrate products is required to be sequentially introduced into the separation tank 21
、
And->
Is a medium for sorting. Wherein->
＞/>
＞/>
。
In the test, the density was first set to
Is fed into the sorting tank 21 with a density of more than +.>
In the concentrate product component separation tank 21, the concentrate product component which is sunk into the separation tank 21 is fished out, and the density is +.>
Is drawn out of the sorting tank 21 and fed back into the corresponding medium chamber 23; and then the density is +. >
Is fed into the sorting tank 21 with a density of more than +.>
The concentrate product components of (2) are sunk into the separation tank 21, and the concentrate product components sunk into the separation tank 21 are fished out and then the density is +.>
Is drawn out of the sorting tank 21 and fed back into the corresponding medium chamber 23; and then the density is +.>
Is fed into the sorting tank 21 with a density of more than +.>
The concentrate product components of (2) are sunk into the separation tank 21, and the concentrate product components sunk into the separation tank 21 are fished out and then the density is +.>
The sorting media of (2) is pumped out of the sorting tank 21 and returned to the corresponding media chamber 23, after which the density is again less than +.>
The concentrate product components of (2) are fished out of the separation tank 21. Thus, the floating and sinking test of the concentrate product is completed.
After three float and sink tests, four concentrate product components with four densities are obtained, and the four concentrate product components are weighed in sequence.
Wherein the sum of the mass of all the concentrate product components not in the preset density interval is set as
Then the tail mismatch rate in essence +.>
；
Setting the mass sum of the tailing product components which are not in the preset density interval as
Fine mismatch rate in tail
。
In the present embodiment of the present invention, in the present embodiment,
the sum of the masses of the concentrate product components, which are all not in the preset density interval. The above example is followed, wherein the mass of the four concentrate product components is +. >
、/>
、/>
And->
The corresponding densities are +.>
、/>
、/>
And->
Setting->
＞/>
＞/>
And, the mismatch in the concentrate product is a concentrate product component with a density greater than a density threshold, the density threshold of the concentrate product component is set to +.>
Density->
If the two are mismatched, then,
then, the tail mismatch rate in essence is +.>
。
Similarly, the mass of the four tailing product components is respectively as follows
、/>
、/>
And->
The corresponding densities are +.>
、
、/>
And->
Setting->
＞/>
＞/>
＞/>
And, mismatch in the tailing product is a tailing product component with a density less than a density threshold, and the density threshold of the tailing product component is set to +.>
Density->
And->
Mismatch, then->
+/>
The rate of fine mismatch in the tail +.>
。
In use, the method further comprises the step of sampling the product obtained by the sorting device 1.
Specifically, a sampler is arranged at the product outlet of the sorting device 1, after the concentrate product and the tailing product are discharged out of the sorting device 1, the sample is sampled by the sampler, and the sample is subjected to floating and sinking patterns.
According to the regulation and control method provided by the embodiment of the invention, the floating and sinking test is carried out on the sample through the floating and sinking instrument.
Specifically, the floating and sinking instrument comprises a conveying mechanism 22, a separation tank 21 and a plurality of medium cavities 23, wherein each medium cavity 23 is communicated with the separation tank 21 through the conveying mechanism 22, the conveying mechanism 22 can convey separation mediums to and fro between the separation tank 21 and the medium cavities 23, and the density of the separation mediums stored in each medium cavity 23 is different.
As shown in fig. 3, the step of performing a sink-float test on the product obtained by the separation device 1 and obtaining a plurality of product components with different densities includes the steps of:
s11, conveying the sorting media in one of the media cavities 23 into the sorting pool 21 through the conveying mechanism 22;
s12, conveying the products into a separation tank 21;
s13, taking out the product which is sunk into the separation tank 21 and obtaining a product component;
s14, conveying the sorting media in the sorting pool 21 back to the corresponding media cavity 23 through the conveying mechanism 22;
s15, repeating the steps S11, S13 and S14 until the product test is completed; wherein the conveying mechanism 22 sequentially conveys the sorting media into the sorting tank 21 in order of the density of the sorting media from high to low.
According to the regulation and control method provided by the embodiment of the invention, as the medium cavities 23 for storing the sorting mediums are arranged, the sorting mediums do not need to be manually allocated each time, so that the labor cost is reduced, the automatic floating and sinking test can be realized, the sorting index of the sorting device can be timely obtained, and the sorting parameters of the sorting device 1 can be timely regulated and controlled according to the sorting index.
The embodiment of the invention provides a regulating and controlling method, wherein the density of a concentrate product is smaller than that of a tailing product.
Taking raw coal as an example, after the raw coal is separated by the separation device 1, a clean coal product and a gangue product are obtained, wherein the density of the clean coal product is smaller than that of the gangue product.
The density interval of the sorting medium of the sorting apparatus 1 is set to be
The actual density of the sorting medium is ρ.
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device 1 according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail comprises the following steps:
monitoring the actual density ρ of the sorting medium when
When or when->
At the same time, the theoretical autonomous regulation step length of the sorting medium is regulated>
To the sorting medium, the actual autonomous adjustment step size +.>
;
Wherein,,
；
a is the density step length adjustment coefficient of the sorting medium, and a is more than 1.
In this embodiment, the preset sorting medium interval is
Namely, when the density rho of the sorting medium is smaller than or equal to rho 1 and smaller than or equal to rho 2, the sorting device 1 can normally sort the materials to be sorted, and the sorting result accuracy is higher.
In this embodiment, the sorting apparatus 1 includes a first storage tank 34, the first storage tank 34 is used for storing sorting media, a densitometer is arranged in the first storage tank 34, and is used for monitoring the density of the sorting media in the first storage tank 34, and the density of the sorting media in the first storage tank 34 is satisfied by adding the sorting media with a density higher than that in the first storage tank 34 into the first storage tank 34 or adding water into the first storage tank 34: ρ1 is less than or equal to ρ2.
When the densitometer in the first bucket 34 detects that
When or when->
When the sorting media in the first storage bucket 34 is not in the preset density interval of the sorting media, the autonomous adjustment step length of the sorting media needs to be adjusted.
Wherein, the automatic adjustment step length of the sorting medium density, namely, the speed of supplementing water to the first storage barrel 34 or supplementing high-density sorting medium, can be adjusted by adjusting the flow rate and the flow quantity of water or the high-density sorting medium.
In normal use, the theoretical autonomous adjustment step of the sorting media density in the first storage bucket 34 is
When the autonomous regulation step of the sorting medium density is +.>
The density ρ of the sorting medium in the first storage tank 34 can be made to satisfy ρ1.ltoreq.ρ.ltoreq.ρ2 when +.>
Or (E)>
If this means that the sorting medium density theory is autonomously adjusted by a step +.>
If the requirement cannot be met, the theoretical autonomous regulating step length is increased>
At this time, will->
Adjust to->
，/>
Wherein a is the density step length adjustment coefficient of the sorting medium, and a is more than 1.
In the present embodiment of the present invention, in the present embodiment,
that is, the speed of replenishing the high-density sorting medium or water into the first storage bucket 34 is increased, so that the density of the sorting medium is quickly restored to the preset density interval of the sorting medium, and the accuracy of the sorting result of the sorting device 1 is ensured.
The regulation method provided by the embodiment of the invention sets the tail mismatch rate threshold value in the sperm as
The threshold of the mismatching rate of essence in tail is +.>
。
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device 1 according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
when (when)
And->
At this time, the sorting medium density ρ is adjusted to +.>
；
When (when)
And->
At this time, the sorting medium density ρ is adjusted to +.>
。
In the present embodiment of the present invention, in the present embodiment,
is the tail mismatch rate threshold in essence, when +.>
The content of tailing products in the concentrate products is too high; />
Is the threshold of the mismatching rate of essence in the tail, when +.>
And represents that the concentrate product content in the tailing product is too high.
In the present embodimentIn an example, when the density of the sorting medium in the first storage tank 34 is within the preset sorting medium density interval, the content of the tailings product in the concentrate product is still too high, which means that the density of the sorting medium is slightly low, and the density ρ of the sorting medium needs to be adjusted to be the same
The method comprises the steps of carrying out a first treatment on the surface of the When the density of the sorting medium in the first storage tank 34 is within the preset sorting medium density interval, the content of concentrate products in the tailing products is too high, which means that the density of the sorting medium is slightly high, and the density ρ of the sorting medium needs to be adjusted to ∈ >
。
By increasing the density of the sorting media or reducing the density of the sorting media, the tail mismatching rate in the tail or the tail mismatching rate in the tail is in a threshold range, and the accuracy of the sorting result of the sorting device 1 is ensured.
For example, the sorting device 1 presets a sorting medium density interval of 1.36-1.40 kg/m 3 When the density is 1.37 kg/m 3 When the density of the sorting medium is in a reasonable range, if
When the density of the sorting medium is required to be adjusted to 1.40kg/m 3 。
The regulation and control method provided by the embodiment of the invention sets the feeding concentration interval of the sorting device 1 as
The actual feeding concentration of the sorting device 1 is C;
the step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device 1 according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
monitoring the actual feed concentration C of the sorting apparatus 1, when
When or when->
During the process, the theoretical autonomous adjustment step length of the feeding concentration of the sorting device 1 is adjusted>
To the actual autonomous regulation step +.>
;
Wherein,,
；
b is the step length adjustment coefficient of the feeding concentration of the sorting device 1, and b is more than 1.
In this embodiment, the feeding concentration, that is, the concentration of the material to be sorted in the sorting medium during feeding, satisfies the following in the actual feeding concentration C of the sorting apparatus 1:
≤C≤/>
during the time, the sorting device 1 can normally sort the materials to be sorted, and the sorting result accuracy is higher.
When in use, when the actual feeding concentration C of the sorting device 1 is monitored not to be within the preset feeding concentration range
When the method is used, the automatic adjustment step length of the feeding concentration of the materials to be sorted is required to be adjusted.
Wherein, the step length is adjusted independently to the pan feeding concentration, namely the speed is adjusted independently to the pan feeding concentration.
In use, the sorting medium can be added or reduced, or the sorting medium can be addedAnd adding or reducing the material to be sorted, and adjusting the feeding concentration of the material to be sorted. In normal use, the theoretical autonomous adjustment step length of the feed concentration of the sorting medium is as follows
When the adjustment step length of the feeding concentration of the sorting medium is +.>
In this case, the actual charge concentration C can be made to satisfy +.>
≤C≤
But when->
When or when->
If so, means that the theoretical autonomous adjustment step length of the feeding concentration of the material to be sorted is +.>
If the use requirement cannot be met, the theoretical independent adjustment step of increasing the feeding concentration of the sorting materials is needed>
Will->
Adjust to->
，
Wherein b is a step length adjustment coefficient of the feeding concentration of the sorting device 1, and b is more than 1.
In the present embodiment of the present invention, in the present embodiment,
＞/>
namely, the automatic adjustment speed of the feeding concentration is increased, so that the feeding concentration of the sorting device 1 is restored to the preset feeding concentration interval of the sorting device 1 as soon as possible, and the accuracy of the sorting result of the sorting device 1 is ensured.
Taking raw coal as an example, the materials to be separated in the separation medium are raw coal.
The regulation and control method provided by the embodiment of the invention sets the actual feeding pressure of the sorting device 1 as
Theoretical feed pressure P of sorting device 1.
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device 1 according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of: when (when)
、/>
And->
During this, the theoretical feed pressure P of the sorting device 1 is adjusted to the actual feed pressure +.>
Wherein->
；
When (when)
、/>
And->
During this, the theoretical feed pressure P of the sorting device 1 is adjusted to the actual feed pressure +.>
Wherein->
；
Wherein,,
step size adjustment for the feed pressure of the sorting device 1
In this embodiment, the sorting device 1 has a theoretical feeding pressure P, and when the feeding pressure of the sorting device 1 is P, the sorting device 1 can normally sort the materials to be sorted, and the sorting accuracy is high.
The feeding pressure of the sorting device 1 has a certain influence on the density of the sorting media, when the feeding pressure is too high, the actual density of the sorting media is higher than the preset density, and when the feeding pressure is too low, the density of the sorting media is lower than the preset density.
In this embodiment, the separation medium is a mixed solution of magnetite powder, coal slime and water.
In this embodiment, after the density of the sorting medium and the feed concentration of the sorting apparatus 1 have been adjusted, there is still present
Or (E)>
In this case, the feed pressure of the sorting apparatus 1 needs to be adjusted.
Specifically, the feed pressure of the sorting apparatus 1 is increased, or the feed pressure of the sorting apparatus 1 is decreased.
During normal use, the feeding pressure of the sorting device 1 is P, so that the normal use requirement of the sorting device 1 can be met.
When the density of the sorting medium and the feeding concentration of the sorting device 1 are regulated and controlled, the sorting medium still exists
When the content of the tailing products in the concentrate products is too high, which means that the actual separation density is too high, the feeding pressure is too low, and the adjustment can be performed by increasing the feeding pressure, specifically, P is adjusted to be +.>
，/>
The method comprises the steps of carrying out a first treatment on the surface of the But is->
When the content of concentrate products in the tailing products is too high, which means that the actual separation density is low, the feeding pressure is high, and the adjustment can be performed by reducing the feeding pressure, specifically, P is adjusted to be +. >
，/>
. Wherein (1)>
For the feed pressure adjustment step of the sorting apparatus 1, the requirement +.>
。
Through the regulation to sorting unit 1 pan feeding pressure, guarantee that tail mismatch rate in the essence and tail in the essence mismatch rate all accord with the predetermined range, guarantee sorting unit 1 sorting result's accuracy.
According to the regulation and control method provided by the embodiment of the invention, the separation medium used in separation is a mixed solution of magnetite powder, coal slime and water, and after separation is completed, part of the separation medium is shunted into the magnetic separator 35, and the theoretical shunting flow of the separation medium is Q.
In this embodiment, as the number of sorting times increases, the content of slime in the sorting medium increases gradually, and at this time, the viscosity of the sorting medium increases, which has a certain influence on sorting. Therefore, after each sorting is completed, a part of the sorting medium is branched into the magnetic separator 35, the magnetite powder in the sorting medium is sorted, the magnetite powder is conveyed back into the first storage barrel 34, and the slime is discharged as waste, so as to reduce the content of the slime in the sorting medium and avoid the excessive viscosity of the sorting medium.
In this embodiment, the theoretical split flow rate of the sorting medium is set to Q, and the actual split flow rate of the sorting medium is set to 
；
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device 1 according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
when (when)
At this time, the theoretical split flow Q of the sorting medium is adjusted to the actual split flow Q of the sorting medium>
；
Wherein,,
，d＞1；
d is the flow-dividing flow step length adjustment coefficient of the sorting medium.
In this embodiment, when the sorting apparatus 1 performs sorting, the tail mismatch rate in the fine and the tail mismatch rate in the fine are both higher, which means that the viscosity of the sorting medium is higher, which affects the sedimentation of the concentrate product and the tailing product, so that the flow rate of the sorting medium needs to be adjusted, that is, the flow rate of the sorting medium needs to be increased, so that more sorting medium is branched into the magnetic separator 35 to remove the slime in the sorting medium, and the viscosity of the sorting medium is reduced.
In particular, the theory of sorting mediaThe split flow is Q and is adjusted to the actual split flow of the sorting medium
Wherein, wherein->
The method comprises the steps of carrying out a first treatment on the surface of the d is the flow-dividing flow step length adjustment coefficient of the sorting medium.
In this embodiment, by adjusting the split flow of the sorting medium, the tail mismatch rate in the fine and the tail mismatch rate in the fine both conform to the preset range, and the accuracy of the sorting result of the sorting device 1 is improved.
In this embodiment, the sorting device 1 is optionally a cyclone 11, in particular a heavy medium cyclone 11.
The regulation and control method provided by the embodiment of the invention further comprises an alarm step, and specifically, the sorting device 1 alarms when the content of the tailing products in the tailing products is too high or when the content of the tailing products in the tailing products is too high.
In this embodiment, when the content of the tailings in the concentrate product sorted by the sorting device 1 is too high, or the content of the concentrate product in the tailings is too high, the sorting device 1 alarms, reminds operators of timely attention, and adjusts the sorting device 1 as soon as possible, so that the accuracy of sorting results is ensured.
Specifically, when the content of the tailing product in the concentrate product is too high or the content of the concentrate product in the tailing product is too high in the step, the alarm of the sorting device 1 comprises the following steps:
when (when)
When the content of the tailing products in the concentrate products is too high, the sorting device 1 alarms;
when (when)
And when the content of concentrate products in the tailing products is too high, the sorting device 1 alarms.
Specifically, in the present embodiment, if it occurs
When the content of the tailing products in the concentrate products is too high, the sorting device 1 can display the tailing products through a buzzer, a warning lamp or a screen during alarming. If present- >
When the content of concentrate products in the tailing products is too high, the sorting device 1 can display the concentrate products through a buzzer, a warning lamp or a screen during alarming.
The regulation and control method provided by the embodiment of the invention can be applied to a sorting system.
Alternatively, as shown in fig. 4 and 5, the sorting system includes: cyclone 11, a floating and sinking instrument, a magnetic separator 35 and the like.
Alternatively, in this embodiment, the separation medium used in the floating and sinking apparatus is the same as the separation medium used in the cyclone 11, and is a mixture of magnetite powder, coal slurry and water.
As shown in fig. 4 and 5, one embodiment of the present invention provides a sorting system, a sink-float apparatus comprising a sorting basin 21, a transport mechanism 22 and a plurality of media chambers 23. Sorting media are stored in the medium cavities 23, the density of the sorting media in each medium cavity 23 is different, each medium cavity 23 is communicated with the sorting pool 21 through the conveying mechanism 22, and the conveying mechanism 22 is used for conveying the sorting media back and forth between the sorting pool 21 and the medium cavities 23. The cyclone 11 is used to sort the material to be sorted and form the product. The selected product can be conveyed to a separation tank 21 for a floating and sinking test.
In this embodiment, the medium chambers 23 are used for storing sorting media, and the densities of the sorting media stored in each medium chamber 23 are different, so that when a sink-float test is performed, it is not necessary to configure a new sorting medium during each test, and by detecting whether the content of a product which does not conform to a preset density interval is located in a qualified interval, and timely adjusting and controlling the sorting parameters of the sorting device 1, the conveying mechanism 22 is disposed between the sorting tank 21 and the medium chamber 23, and can convey the sorting media in the medium chamber 23 to the sorting tank 21, or convey the sorting media in the sorting tank 21 back to the medium chamber 23.
In this embodiment, when the float and sink test is performed, the conveying mechanism 22 conveys the sorting medium in one of the medium chambers 23 into the sorting tank 21 for the float and sink test of the product, after the test is completed, the conveying mechanism 22 conveys the sorting medium in the sorting tank 21 back into the corresponding medium chamber 23, and when in use, the conveying mechanism 22 sequentially conveys the sorting medium into the sorting tank 21 from the high density to the low density for the float and sink test.
In the embodiment, the separation medium is a mixed solution of magnetite powder, coal slime and water, is non-corrosive, is harmless to human body, and can ensure the health of operators. The density of the sorting media stored in each media cavity 23 is different so as to meet the requirements of sorting media with different densities in the floating and sinking test of the product. Preferably, the density of the sorting media in the overall media chamber 23 is arranged in a gradient, e.g. a density of 1.8 kg/m 3 、1.7 kg/m 3 、kg/m 3 、kg/m 3 And kg/m 3 Etc. The conveying mechanism 22 is used for conveying the sorting media in the media cavity 23 into the sorting tank 21 from the high density to the low density, for example, the conveying mechanism 22 firstly conveys the sorting media with the density of 1.8 kg/m 3 Is fed into the sorting tank 21, at which time the density of the product of the sorting tank 21 is less than 1.8 kg/m 3 The product of (a) floats on the surface of the sorting medium and has a density of greater than 1.8 kg/m 3 The product sunk into the bottom of the separation tank 21, and then the product sunk into the bottom of the separation tank 21 is fished out by the fishing assembly 25, and the density of the conveying mechanism 22 is 1.8 kg/m 3 Is conveyed back to the sorting medium with the holding density of 1.8 kg/m 3 Is fed into the medium chamber 23 of the separation tank 21 with a density of 1.7 kg/m 3 And (3) continuously repeating the above process until the floating and sinking test of all products is finished.
In this embodiment, the floating device comprises a plurality of density liquid barrels, and each density liquid barrel is internally provided with one medium cavity 23. Meanwhile, in order to avoid particle sinking in the sorting medium and ensure the uniformity of the sorting medium, stirring paddles are arranged in the density liquid barrel, and the stirring paddles continuously rotate to stir the sorting medium under the driving of a motor, so that the density of the sorting medium is uniform.
In this embodiment, the density liquid bucket is opened and is set up, and the motor sets up in the top of density liquid bucket, and the output of motor stretches into in the density liquid bucket, is connected with the stirring rake transmission.
In this embodiment, the conveying mechanism 22 includes a pipeline and a conveying pump, one end of the pipeline is communicated with the sorting tank 21, a plurality of branches are formed at the other end of the pipeline, each branch is in one-to-one correspondence with the medium cavity 23, each branch is communicated with the corresponding medium cavity 23, a control valve for controlling on-off of the branch, such as an electromagnetic valve or a pinch valve, is further arranged on the branch, when the sorting medium is required to be conveyed, the corresponding control valve is capable of flowing in the pipeline.
Alternatively, it is also possible to provide a plurality of lines, each medium chamber 23 being in communication with the sorting tank 21 via a separate line.
In use, the sorting system provided in this embodiment stores the sorted media disposed in the corresponding media chambers 23, and then conveys the sorted media into the sorting cells 21 by the conveying mechanism 22 according to the density gradient. Meanwhile, the product is conveyed into the separation tank 21, and a floating and sinking test of the product is performed in the separation tank 21. After each test is completed, the conveying mechanism 22 conveys the sorting media in the sorting pool 21 back to the media cavity 23, and as the plurality of media cavities 23 for storing the sorting media are arranged, the sorting media do not need to be manually provided each time, so that the labor cost is reduced, the processing period of the floating and sinking test is reduced, and the floating and sinking device is matched with the sorting device.
The sampler of the embodiment of the invention is a coal sampler commonly used in the market, is a prior art known in the art, and is not described herein.
The sorting system provided by the embodiment of the invention further comprises a first medium removing mechanism 31 and a first storage barrel 34. The first storage bucket 34 is used for storing sorting media used in sorting by the sorting apparatus 1. The first de-media mechanism 31 separates the product from the sorting media.
Specifically, the mixture of the sorting medium and the product discharged from the sorting apparatus 1 is fed to the first medium removing mechanism 31, and the first medium removing mechanism 31 separates the product from the sorting medium.
By providing the first medium removing mechanism 31, the sorting medium can be prevented from interfering with the normal progress of the subsequent process.
When the cyclone separator is used, the mixing barrel 32 is arranged in front of the cyclone 11, the first storage barrel 34 is communicated with the mixing barrel 32, and materials to be separated and separation media are mixed in the mixing barrel 32 and then conveyed into the separation device 1 together for separation.
Alternatively, in this embodiment, the first medium removing mechanism 31 is an arc-shaped screen, and the structure and principle of the arc-shaped screen are well known in the art, and are not described herein.
As shown in fig. 4, the floating and sinking apparatus further includes a second storage tank 24, where the second storage tank 24 stores sorting media, and the density of the sorting media in the second storage tank 24 is higher than that of the sorting media in any one of the media cavities 23. Any of the medium chambers 23 is in communication with a second storage tank 24, and high density communication is capable of delivering the sorting medium to the medium chamber 23.
In this embodiment, when the density of the sorting medium in a certain medium chamber 23 is lower than the preset density, the second storage barrel 24 supplements the sorting medium with high density to the medium chamber 23 for adjusting the density of the sorting medium in the medium chamber 23 to the preset density.
By arranging the second storage barrel 24, the density of the sorting media in the media cavity 23 can be adjusted, and the accuracy of the floating and sinking test result is ensured.
The sorting system provided by the embodiment of the invention, as shown in fig. 4, further comprises a second medium removing mechanism 33, wherein the second medium removing mechanism 33 is used for removing sorting medium attached to the surface of a product.
Specifically, the mixture of the product and the sorting medium discharged from the cyclone 11 is input into the first medium removing mechanism 31, the first medium removing mechanism 31 separates the product from the sorting medium, but the surface of the product is adhered with the sorting medium, and then the sorting medium adhered to the surface of the product is removed by arranging the second medium removing mechanism 33, so that the product is tidy, and the normal operation of the subsequent process is avoided.
Alternatively, in the present embodiment, the second medium removing mechanism 33 is a linear vibrating screen.
In this embodiment, the fishing assembly 25 includes a blade, a transmission assembly, and a drive. The lateral wall of separation tank 21 is provided with the discharge gate, the driving piece passes through drive assembly with the scraper blade transmission is connected, the driving piece drive the scraper blade is scraped the material to discharge gate department.
When the regulation and control mode provided by the embodiment of the invention is used, firstly, the product obtained by the sorting device 1 is sampled by the sampling machine, and the sample is conveyed into the sorting pool 21 for a floating and sinking test.
In the floating and sinking test, concentrate products are taken as clean coal products, and tailing products are taken as gangue products as examples. The density is sequentially set to be by the conveying mechanism 22
And->
（/>
＞/>
＞/>
) The sorting medium of (2) is conveyed into a sorting tank 21, a float and sink test is respectively carried out on the clean coal product and the gangue product, and when the clean coal product is subjected to the float and sink test, the mass of the components of the four clean coal products is +.>
、/>
、/>
And->
The corresponding densities are +.>
、/>
、/>
And->
Setting->
＞/>
＞
And, the mismatch in the clean coal product is the clean coal product component with the density larger than the density threshold value, and the density threshold value of the clean coal product component is set as +.>
Density->
Mismatch, then->
Then, the gangue mismatch rate in the coal is
。
Similarly, the mass of the four gangue product components is respectively as follows
、/>
、/>
And->
The corresponding densities are +.>
、
、/>
And->
Setting->
＞/>
＞/>
＞/>
And, mismatch in gangue products is gangue product component with density less than density threshold, and the density threshold of gangue product component is set as +.>
Density->
And->
Mismatch, then->
+/>
The mismatch rate of coal in gangue +. >
。
After the mismatch ratio is obtained, the sorting parameters of the cyclone 11 can be controlled.
In the control of the classification parameters of the cyclone 11, first, it is monitored whether the density ρ of the classification medium (mixture of magnetite powder, coal slurry and water) in the first storage tank 34 is within a preset classification medium density interval
And (3) inner part.
If it is
At the time of or->
In this case, the step size is regulated theoretically autonomously by means of the sorting medium +.>
Adjust to the actual autonomous adjustment step of the sorting media +.>
And the density of the sorting medium is quickly restored to the preset density interval of the sorting medium.
When the density of the sorting medium is within the preset sorting medium density interval, the occurrence of
When the content of gangue in the coal is too high, the density of the sorting medium is slightly low, and the density rho of the sorting medium is adjusted to be +.>
The method comprises the steps of carrying out a first treatment on the surface of the And if it occurs
When the content of coal in the gangue is too high, the density of the sorting medium is slightly high, and the density rho of the sorting medium is adjusted to be +.>
。
During the adjustment of the sorting parameters of the cyclone 11, the feed concentration C is also monitored if it is not within the preset feed concentration interval
When (i.e.)>
When or when->
In this case, the theoretical autonomous adjustment step length +. >
The actual autonomous adjustment step length of the feeding concentration of the sorting device 1 is adjusted
The feeding concentration of the sorting device 1 is restored to be within the preset feeding concentration interval of the sorting device 1 as soon as possible.
After the adjustment of both the sorting medium density and the feed concentration to the sorting apparatus 1, there is still present
Alternatively, the first and second substrates may be coated,
in this case, the feeding pressure of the sorting apparatus 1 is adjusted.
Specifically, when
At the time of or->
At the time, adjust and sortThe theoretical feed pressure P of the device 1 to the actual feed pressure of the sorting device 1>
。
And when simultaneously occurring
In this case, the viscosity of the separation medium is to be adjusted, specifically, the theoretical separation flow Q of the separation medium, which is branched off to the magnetic separator 35, is adjusted to the actual separation flow +.>
。
By the adjustment of the steps, finally
≤/>
And->
≤/>
The accuracy of the sorting result of the cyclone 11 is ensured.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. A method of regulation comprising the steps of:
s1, carrying out a floating and sinking test on the product obtained by the sorting device (1) and obtaining a plurality of product components with different densities;
s2, sequentially weighing all the product components obtained in the step S1, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting device (1) in real time according to the mismatch rate;
wherein the products include concentrate products and tailings products;
the step of weighing all the product components obtained in the step S1 in sequence, calculating the mismatch rate according to the density of the product components, and adjusting the sorting parameters of the sorting device (1) in real time according to the mismatch rate, wherein the step of:
s21, sequentially weighing all concentrate product components, and recording the mass of all concentrate product components
…/>
The method comprises the steps of carrying out a first treatment on the surface of the Sequentially weighing all tailing product components, and recording the mass of all tailing product components>
…/>
；
Wherein n is more than or equal to 2;
s22, calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device (1) according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail;
Wherein the sum of the mass of all the concentrate product components not in the preset density interval is set as
Tail mismatch rate in sperm
；
Setting the mass sum of the tailing product components which are not in the preset density interval as
Fine mismatch rate in tail
；
Setting the density of the concentrate product to be less than that of the tailing product;
the density interval of the sorting medium of the sorting device (1) is set as
The actual density of the sorting medium is ρ;
setting the tail mismatch rate threshold in seminal plasma as
The threshold of the mismatching rate of essence in tail is +.>
；
Setting the separation medium used in separation to be a mixed solution of magnetite powder, coal slime and water, after separation, shunting part of the separation medium into a magnetic separator (35), setting the theoretical shunting flow of the separation medium as Q, and setting the actual shunting flow of the separation medium as
；
According to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail, and adjusting the sorting parameters of the sorting device (1) according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail, wherein the steps comprise:
monitoring the actual density ρ of the sorting medium when
When or when- >
At the same time, the theoretical autonomous regulation step length of the sorting medium is regulated>
To the sorting medium, the actual autonomous adjustment step size +.>
;
Wherein,,
；
a is a density step length adjustment coefficient of the sorting medium, and a is more than 1;
the step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device (1) according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
when (when)
And->
At this time, the sorting medium density ρ is adjusted to +.>
；
When (when)
And->
At this time, the sorting medium density ρ is adjusted to +.>
；
The step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device (1) according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
when (when)
At this time, the theoretical split flow Q of the sorting medium is adjusted to the actual split flow Q of the sorting medium +.>
；
Wherein,,
，d＞1；
d is the flow-dividing flow step length adjustment coefficient of the sorting medium.
2. The regulation and control method according to claim 1, characterized in that the float and sink test is performed by a float and sink meter comprising a conveying mechanism (22), a separation cell (21) and a plurality of medium chambers (23); each medium cavity (23) is communicated with the separation pool (21) through a conveying mechanism (22), the conveying mechanism (22) can convey separation mediums to and fro between the separation pool (21) and the medium cavities (23), and the densities of the separation mediums stored in each medium cavity (23) are different;
The step of carrying out a floating and sinking test on the product obtained by the sorting device (1) and obtaining a plurality of product components with different densities comprises the following steps:
s11, conveying the sorting media in one of the media cavities (23) into the sorting pool (21) through a conveying mechanism (22);
s12, conveying the products into a separation tank (21);
s13, fishing out the product which is sunk into the separation pool (21) and obtaining a product component;
s14, conveying sorting media in the sorting pool (21) back to the corresponding media cavity (23) through the conveying mechanism (22);
s15, repeating the steps S11, S13 and S14 until the product test is completed; wherein, the conveying mechanism (22) sequentially conveys the sorting media into the sorting pool (21) from high to low according to the density of the sorting media.
3. The control method according to claim 1, characterized in that the feed concentration interval of the sorting device (1) is set to be
The actual feeding concentration of the sorting device (1) is C;
the step of calculating the tail mismatch rate in the concentrate and the tail mismatch rate in the tail according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device (1) according to the tail mismatch rate in the concentrate and the tail mismatch rate in the tail further comprises the steps of:
Monitoring the actual feeding concentration C of the sorting device (1), when
When or when->
When the sorting device (1) is regulated, the theoretical autonomous regulation step length of the feeding concentration is +.>
To the actual autonomous regulation step +.>
;
Wherein,,
；
b is the step length adjustment coefficient of the feeding concentration of the sorting device (1), and b is more than 1.
4. A control method according to claim 3, characterized in that the actual feed pressure of the sorting device (1) is set to
Theoretical feed pressure P of the sorting device (1);
the step of calculating the tail mismatch rate in the fine and the tail fine mismatch rate according to the quality of all the concentrate product components and the quality of all the tailing product components recorded in the step S21, and adjusting the sorting parameters of the sorting device (1) according to the tail mismatch rate in the fine and the coal mismatch rate in the gangue further comprises the steps of:
when (when)
、/>
And->
During this, the theoretical feed pressure P of the sorting device (1) is adjusted to the actual feed pressure +.>
Wherein->
；
When (when)
、/>
And->
During this, the theoretical feed pressure P of the sorting device (1) is adjusted to the actual feed pressure +.>
Wherein->
；
Wherein,,
the step length is adjusted for the feeding pressure of the sorting device (1).
5. A conditioning method according to any of claims 1 to 4, characterized in that the sorting device (1) is a cyclone (11).
6. The method of controlling according to claim 5, further comprising the step of:
when (when)
When the tailings in the concentrate products are too high, the sorting device (1) alarms;
when (when)
And when the content of concentrate products in the tailing products is too high, the sorting device (1) alarms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310262278.5A CN115970882B (en) | 2023-03-17 | 2023-03-17 | Regulation and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310262278.5A CN115970882B (en) | 2023-03-17 | 2023-03-17 | Regulation and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115970882A CN115970882A (en) | 2023-04-18 |
| CN115970882B true CN115970882B (en) | 2023-07-07 |
Family
ID=85970853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310262278.5A Active CN115970882B (en) | 2023-03-17 | 2023-03-17 | Regulation and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115970882B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959220A (en) * | 2015-08-04 | 2015-10-07 | 北京国华科技集团有限公司 | Method capable of adjusting two-stage separation density of three-product dense medium cyclone on line |
| CN106179717A (en) * | 2016-07-22 | 2016-12-07 | 中煤科工集团唐山研究院有限公司 | A kind of full level of thermal coal is selected in simplified heavy medium sorting process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102791380B (en) * | 2009-11-18 | 2015-08-19 | 塔塔钢铁有限公司 | For determining method of drifting along and the device of mineral ore dressing prospect |
| CN108435405B (en) * | 2018-03-29 | 2023-07-14 | 西安科技大学 | Automatic coal floating and sinking test device |
| CN217359460U (en) * | 2022-03-26 | 2022-09-02 | 丹东东方测控技术股份有限公司 | Coal rapid floating and sinking experiment system |
-
2023
- 2023-03-17 CN CN202310262278.5A patent/CN115970882B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959220A (en) * | 2015-08-04 | 2015-10-07 | 北京国华科技集团有限公司 | Method capable of adjusting two-stage separation density of three-product dense medium cyclone on line |
| CN106179717A (en) * | 2016-07-22 | 2016-12-07 | 中煤科工集团唐山研究院有限公司 | A kind of full level of thermal coal is selected in simplified heavy medium sorting process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115970882A (en) | 2023-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4477338A (en) | Method and apparatus for processing high-ash coal slurries by flotation, particularly for processing gas coal and open-burning coal which are difficult to float | |
| US4226714A (en) | Thickener control system | |
| US4028228A (en) | Process and apparatus for cleaning very fine ore | |
| GB1574375A (en) | Removal of liquid solid and semi-solid wastes | |
| JP2008540155A (en) | Process and apparatus for separating plastics with different chemical compositions | |
| CN115970882B (en) | Regulation and control method | |
| CN219836636U (en) | Control system and sink-float instrument | |
| CN211585539U (en) | Tubular pile residual slurry recycling system | |
| US2007190A (en) | Process of and apparatus for separating mixed materials | |
| CN111592128A (en) | Near water source (ecological) protection area tunnel construction waste water treatment complete equipment | |
| WO2021049117A1 (en) | Cell culture device | |
| CN109896537B (en) | Method and system for recycling overflow of crystallizer | |
| CN114179227B (en) | Tailing grading and reorganizing slurry reconstruction cemented filling equipment and technology thereof | |
| DE68907226T2 (en) | Method and device for comminuting granular material. | |
| CN116273437A (en) | Sorting process | |
| CN111215237A (en) | Sorting system | |
| CN106362480A (en) | Efficient filtering method of concentrate pulp | |
| US2534656A (en) | Grinding mill control | |
| EP0445085A2 (en) | Procedure for the washing and composition control of abrasive pulps used in the cutting of granite and similar stones and relative apparatus | |
| CN106669474A (en) | Automatic control silt-carrying flow generation system | |
| CN111458477A (en) | Heavy liquid adjusting method for intelligent floating and sinking test | |
| CN116273438A (en) | Floating and sinking device | |
| US3287263A (en) | Method of and apparatus for controlling addition of reagents to the feed of phase separation vessels | |
| CN219129160U (en) | Sewage allocation device | |
| CN110694348A (en) | System and method for dissociating waste residues of papermaking coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |