CN115610950B - Dry-base coal blending system and method - Google Patents
Dry-base coal blending system and method Download PDFInfo
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- CN115610950B CN115610950B CN202211398203.1A CN202211398203A CN115610950B CN 115610950 B CN115610950 B CN 115610950B CN 202211398203 A CN202211398203 A CN 202211398203A CN 115610950 B CN115610950 B CN 115610950B
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- 239000003245 coal Substances 0.000 title claims abstract description 277
- 238000002156 mixing Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005303 weighing Methods 0.000 claims description 77
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 238000005299 abrasion Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G27/00—Jigging conveyors
- B65G27/10—Applications of devices for generating or transmitting jigging movements
- B65G27/16—Applications of devices for generating or transmitting jigging movements of vibrators, i.e. devices for producing movements of high frequency and small amplitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/42—Devices for emptying otherwise than from the top using belt or chain conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/12—Sieving bulk materials during loading or unloading
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention belongs to the field of coal metallurgy, and relates to a dry-base coal blending system and a method, which realize dry-base coal blending, ensure the stable component analysis of mixed coal, ensure safe production, realize the accurate coal blending of various coal types, stabilize production consumption, provide basic guarantee for the balance of production and purchase plans, and solve the problems of quick and on-line switching of the coal feeding process of a mixed coal bin; the invention not only can realize accurate coal blending of raw coal and effectively reduce the deviation between actual component analysis data and theoretical analysis data of the mixed coal, but also can realize on-line switching of the mixed coal bin in the coal blending process, thereby providing a solid and reliable foundation for production stability.
Description
Technical Field
The invention belongs to the field of coal metallurgy, and relates to a dry-base coal blending system and a dry-base coal blending method.
Background
Most of the current coal blending systems adopt wet base coal blending, and the moisture of raw coal and the moisture evaporation in the subsequent drying process are not fully considered. Because the deviation of the water data of each coal is larger, the deviation of the actual components of the mixed coal and the theoretical data is larger after the raw coal is dried and the water is evaporated.
The existing coal blending system has a common problem that the actual consumption data of various coal types have larger deviation compared with the consumption data of planned proportion, and accurate coal blending cannot be realized. The contradiction situation that a certain coal is over-consumed and under-stored is caused, the coal blending cost is affected, and the preset supply plan of raw coal is seriously disturbed.
In the existing actual production process, a plurality of mixed coal bins share one coal blending system, but the coal bins are not easy to switch.
Disclosure of Invention
In view of the above, the invention aims to provide a dry-base coal blending system and a method, which can realize dry-base coal blending and accurate coal blending of various coal types and solve the problems of quick and on-line switching in the coal feeding process of a mixed coal bunker.
In order to achieve the above purpose, the present invention provides the following technical solutions: the dry-base coal blending system comprises more than 1 receiving hoppers, a coal blending weighing belt arranged at the outlet position of the receiving hoppers, a coal blending belt arranged below the coal blending weighing belt, and a multi-section coal conveying belt; more than 1 plow discharger are arranged on the tail section of the coal conveying belt, and the mixed coal bin is arranged corresponding to the plow discharger; the coal blending weighing belt is communicated with the plow discharger through a PLC control system.
Optionally, a weighing carrier roller, a weighing sensor and a speed sensor which are communicated with the PLC control system are arranged on the coal blending weighing belt.
Optionally, a vibrator is arranged on each receiving hopper.
Optionally, the coal conveying belts are respectively provided with three sections in sequence, and the first coal conveying belt, the second coal conveying belt and the third coal conveying belt are respectively arranged on the third coal conveying belt.
Optionally, a first iron remover is arranged on the first coal conveying belt, a shuttle groove is arranged between the first coal conveying belt and the second coal conveying belt, and a vibrator is arranged on the shuttle groove.
Optionally, the bottom of the shuttle groove is also provided with a raw coal screen with a screen, the second coal conveying belt is arranged below the screen of the raw coal screen, and the tail end of the raw coal screen is provided with a bulk coal and sundry collecting bucket.
Optionally, a second iron remover is arranged on the second coal conveying belt.
The dry-base coal blending method comprises the following steps of:
s1, charging raw coal of corresponding types into three receiving hoppers according to the selected coal charging varieties;
S2, inputting the dry basis ratio and the moisture of various raw coals through a PLC control system;
s3, selecting a serial number of a mixed coal bin to be charged with coal, switching a corresponding state of a plow discharger, and discharging raw coal on a third coal conveying belt into the coal bin through the corresponding plow discharger;
S31, when the first mixed coal bin is fed, the first plow discharger must be in a falling state, and at the moment, the second plow discharger and the third plow discharger are in a lifting state, so that abrasion caused by friction of the second plow discharger, the third plow discharger and a belt can be reduced;
S32, when the second mixed coal bunker is fed, the first plow discharger must be in a lifting state, the second plow discharger must be in a falling state, and at the moment, the third plow discharger is in a lifting state, so that abrasion caused by friction between the third plow discharger and a belt is reduced;
S33, when entering the third mixed coal bin, the third plow discharger must be in a falling state, and at the moment, the first plow discharger and the second plow discharger must be in a lifting state;
s4, starting a second coal conveying belt and a second iron remover;
s5, starting a raw coal screen;
s6, starting a first coal conveying belt and a first iron remover;
S7, starting a coal mixing belt;
s8, respectively starting three coal blending weighing belts below the receiving hopper;
s9, starting the three receiving hoppers and the vibrator arranged on the shuttle slot;
S10, in the process that the blended coal enters the mixed coal bin, sundries in the coal are screened and filtered through a raw coal screen, raw coal with the granularity smaller than 50mm directly falls into a second coal conveying belt, and sundries and bulk coal in the coal directly enter a bulk coal and sundry collecting hopper after being screened and filtered through the raw coal screen.
Optionally, the raw coal in the receiving hopper is rapped by a rapper and uniformly falls onto a coal blending weighing belt, and the raw coal falling onto the coal blending weighing belt at the moment is a water-containing wet base;
Wherein, the belt principle is weighed to the blending: the weighing carrier roller, the weighing sensor and the speed sensor are arranged on the coal blending weighing belt, the weight of the loaded material is transmitted to the weighing sensor by the weighing carrier roller, the weight of the loaded material is converted into an electric signal by the weighing sensor, and the electric signal is transmitted to the PLC control system by the cable. Meanwhile, the speed sensor converts the running speed of the belt into an electric signal and transmits the electric signal to the PLC control system; the two signals are processed by a PLC control system, and different belt rotating speeds correspond to different weighing data and are displayed;
Control tracking process of the PLC control system: in the three coal blending weighing belt scales, if a first coal blending weighing belt is called a reference scale, the corresponding coal type is taken as a reference coal type, a fixed rotating speed is given to the first coal blending weighing belt in the running process, and the rotating speed corresponds to water-wet base weighing data; the other two coal blending weighing belt scales are tracking scales, and the corresponding coal types are tracking coal types; the PLC control system acquires data such as the water content of the reference coal, the dry basis proportion of the reference coal, the water content of the tracking coal, the dry basis proportion of the tracking coal and the like, then carries out coefficient conversion and controls and adjusts the belt rotating speed of the tracking scale, and the specific conversion method and the tracking process are as follows:
Tracking the belt speed of the weighing = belt speed of the reference weighing x (100% -water content of the reference coal) x (100% -water content of the tracking coal) x dry basis ratio of the tracking coal/dry basis ratio of the reference coal; the actual weighing data of the final tracking scale is fed back by tracking the belt rotating speed of the scale.
The invention has the beneficial effects that: the dry-base coal blending system and the method not only can realize accurate coal blending of raw coal and effectively reduce deviation of actual component analysis data and theoretical analysis data of mixed coal, but also can realize on-line switching of a mixed coal bin in the coal blending process, thereby providing a solid and reliable basis for production stability.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a system of the present invention;
fig. 2 is a flow chart of the control principle of the present invention.
Reference numerals: the device comprises a first receiving hopper 1, a second receiving hopper 2, a third receiving hopper 3, a blending weighing belt 4, a coal mixing belt 5, a first coal conveying belt 6, a first iron remover 7, a shuttle slot 8, a raw coal screen 9, a bulk coal and sundry collecting hopper 10, a second coal conveying belt 11, a second iron remover 12, a first plow discharger 13, a second plow discharger 14, a third plow discharger 15, a first mixed coal bin 16, a second mixed coal bin 17, a third mixed coal bin 18, a third coal conveying belt 19 and a vibrator 20.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1-2, a dry-base coal blending system includes a first receiving hopper 1, a second receiving hopper 2, a third receiving hopper 3, a coal blending weighing belt 4 respectively arranged at the outlet positions of the three receiving hoppers, a coal blending belt 5 arranged below the coal blending weighing belt 4, and a multi-section coal conveying belt; more than 1 plow discharger are arranged on the tail section of the coal conveying belt, and the mixed coal bin is arranged corresponding to the plow discharger; the coal blending weighing belt 4 is communicated with a PLC control system, a weighing carrier roller, a weighing sensor and a speed sensor which are communicated with the PLC control system are arranged on the coal blending weighing belt 4, a vibrator 20 is arranged on each receiving hopper, the coal conveying belts are respectively and sequentially provided with three sections, a first coal conveying belt 6, a second coal conveying belt 11 and a third coal conveying belt 19 are respectively arranged on the third coal conveying belt 19, the plow discharger is arranged on the third coal conveying belt 19, a first iron remover 7 is arranged on the first coal conveying belt 6, a shuttle groove 8 is arranged between the first coal conveying belt 6 and the second coal conveying belt 11, a vibrator 20 is arranged on the shuttle groove 8, a raw coal screen 9 with a screen mesh is further arranged at the bottom of the shuttle groove 8, the second coal conveying belt 11 is arranged below the screen mesh of the raw coal screen 9, a bulk coal and sundry collecting hopper 10 is arranged at the tail end of the raw coal screen 9, and a second iron remover 12 is arranged on the second coal conveying belt 11.
In the embodiment, all three receiving hoppers can select coal varieties, and meanwhile, the dry basis proportion and the moisture of the corresponding coal varieties can be input.
The dry base coal blending method adopts the dry base coal blending system, and the three parts of the receiving hopper, the coal blending weighing belt 4, the mixed coal bin and the plow discharger are respectively arranged, and the method comprises the following steps:
s1, charging raw coal of corresponding types into three receiving hoppers according to the selected coal charging varieties;
S2, inputting the dry basis ratio and the moisture of various raw coals through a PLC control system;
s3, selecting the serial number of a mixed coal bin to be charged with coal, switching the corresponding state of the plow discharger, and discharging raw coal on a third coal conveying belt 19 into the coal bin through the corresponding plow discharger (online switching can be realized in the coal blending process);
S31, when the first mixed coal bin 16 is fed, the first plow discharger 13 is in a falling state, and the second plow discharger 14 and the third plow discharger 15 are in a lifting state, so that abrasion caused by friction between the second plow discharger 14, the third plow discharger 15 and a belt can be reduced;
S32, when the second mixed coal bin 17 is fed, the first plow discharger 13 must be in a lifting state, the second plow discharger 14 must be in a falling state, and at the moment, the third plow discharger 15 is in a lifting state, so that abrasion caused by friction between the third plow discharger 15 and a belt is reduced;
s33, when entering the third mixed coal bunker 18, the third plow discharger 15 must be in a falling state, and the first plow discharger 13 and the second plow discharger 14 must be in a lifting state;
s4, opening the second coal conveying belt 11 and the second iron remover 12;
s5, starting a raw coal screen 9;
S6, opening the first coal conveying belt 6 and the first iron remover 7;
S7, starting the coal mixing belt 5;
s8, respectively starting three coal blending weighing belts 4 below the receiving hopper;
s9, starting the three receiving hoppers and the vibrator 20 arranged on the shuttle groove 8;
S10, in the process that the blended coal enters a mixed coal bin, sundries in the coal are screened and filtered through a raw coal screen 9, raw coal with the granularity smaller than 50mm directly falls into a second coal conveying belt 11, and sundries and bulk coal in the coal directly enter a bulk coal and sundry collecting hopper 10 after being screened and filtered through the screen of the raw coal screen 9.
Optionally, the raw coal in the receiving hopper is rapped through a rapper 20 and uniformly falls onto the coal blending weighing belt 4, and the raw coal falling onto the coal blending weighing belt 4 at the moment is a water-containing wet base;
Wherein, the principle of the coal blending weighing belt 4: the weighing carrier roller, the weighing sensor and the speed sensor are arranged on the coal blending weighing belt 4, the weight of the loaded material is transmitted to the weighing sensor by the weighing carrier roller, the weight of the loaded material is converted into an electric signal by the weighing sensor, and the electric signal is transmitted to the PLC control system by a cable. Meanwhile, the speed sensor converts the running speed of the belt into an electric signal and transmits the electric signal to the PLC control system; the two signals are processed by a PLC control system, and different belt rotating speeds correspond to different weighing data and are displayed;
Control tracking process of the PLC control system: among the three coal blending weighing belts 4, if the first coal blending weighing belt 4 is used as a reference weighing belt, the corresponding coal type is used as a reference coal type, a fixed rotating speed is given to the first coal blending weighing belt in the running process, and the rotating speed corresponds to water-wet base weighing data; the other two coal blending weighing belts 4 are tracking scales, and the corresponding coal types are tracking coal types; the PLC control system acquires data such as the water content of the reference coal, the dry basis proportion of the reference coal, the water content of the tracking coal, the dry basis proportion of the tracking coal and the like, then carries out coefficient conversion and controls and adjusts the belt rotating speed of the tracking scale, and the specific conversion method and the tracking process are as follows:
Tracking the belt speed of the weighing = belt speed of the reference weighing x (100% -water content of the reference coal) x (100% -water content of the tracking coal) x dry basis ratio of the tracking coal/dry basis ratio of the reference coal; the actual weighing data of the final tracking scale is fed back by tracking the belt rotating speed of the scale.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (4)
1. The dry-base coal blending method is characterized by applying a dry-base coal blending system, wherein the system comprises more than 1 receiving hoppers, a coal blending weighing belt arranged at the outlet position of the receiving hoppers, a coal blending belt arranged below the coal blending weighing belt, and a multi-section coal conveying belt; more than 1 plow discharger are arranged on the tail section of the coal conveying belt, and the mixed coal bin is arranged corresponding to the plow discharger; the coal blending weighing belt is communicated with the plow discharger; the coal blending weighing belt is provided with a weighing carrier roller, a weighing sensor and a speed sensor which are communicated with the PLC control system; a vibrator is arranged on each receiving hopper; the coal conveying belts are respectively provided with three sections in sequence, and the first coal conveying belt, the second coal conveying belt and the third coal conveying belt are respectively provided with a plow discharger;
the coal blending method comprises three receiving hoppers, a coal blending weighing belt, a mixed coal bin and a plow discharger, and further comprises the following steps:
s1, charging raw coal of corresponding types into three receiving hoppers according to the selected coal charging varieties;
S2, inputting the dry basis ratio and the moisture of various raw coals through a PLC control system;
s3, selecting a serial number of a mixed coal bin to be charged with coal, switching a corresponding state of a plow discharger, and discharging raw coal on a third coal conveying belt into the coal bin through the corresponding plow discharger;
S31, when the first mixed coal bin is fed, the first plow discharger must be in a falling state, and at the moment, the second plow discharger and the third plow discharger are in a lifting state, so that abrasion caused by friction of the second plow discharger, the third plow discharger and a belt can be reduced;
S32, when the second mixed coal bunker is fed, the first plow discharger must be in a lifting state, the second plow discharger must be in a falling state, and at the moment, the third plow discharger is in a lifting state, so that abrasion caused by friction between the third plow discharger and a belt is reduced;
S33, when entering the third mixed coal bin, the third plow discharger must be in a falling state, and at the moment, the first plow discharger and the second plow discharger must be in a lifting state;
s4, starting a second coal conveying belt and a second iron remover;
s5, starting a raw coal screen;
s6, starting a first coal conveying belt and a first iron remover;
S7, starting a coal mixing belt;
s8, respectively starting three coal blending weighing belts below the receiving hopper;
s9, starting the three receiving hoppers and the vibrator arranged on the shuttle slot;
s10, in the process that the blended coal enters a mixed coal bin, sundries in the coal are screened and filtered through a raw coal screen, raw coal with the granularity smaller than 50mm directly falls into a second coal conveying belt, and sundries and bulk coal in the coal are screened and filtered through a raw coal screen and then directly enter a bulk coal and sundry collecting hopper;
The raw coal in the receiving hopper is beaten by a vibrator and uniformly falls onto a coal blending weighing belt, and the raw coal falling onto the coal blending weighing belt is a water-containing wet base;
Wherein, the belt principle is weighed to the blending: the weighing carrier roller, the weighing sensor and the speed sensor are arranged on the coal blending weighing belt, the weight of the loaded material is transmitted to the weighing sensor by the weighing carrier roller, the weighing sensor converts the weight of the loaded material into an electric signal, and the electric signal is transmitted to the PLC control system by a cable; meanwhile, the speed sensor converts the running speed of the belt into an electric signal and transmits the electric signal to the PLC control system; the two signals are processed by a PLC control system, and different belt rotating speeds correspond to different weighing data and are displayed;
Control tracking process of the PLC control system: in the three coal blending weighing belt scales, if a first coal blending weighing belt is called a reference scale, the corresponding coal type is taken as a reference coal type, a fixed rotating speed is given to the first coal blending weighing belt in the running process, and the rotating speed corresponds to water-wet base weighing data; the other two coal blending weighing belt scales are tracking scales, and the corresponding coal types are tracking coal types; the PLC control system acquires the water content of the reference coal, the dry basis proportion of the reference coal, the water content of the tracking coal and the dry basis proportion data of the tracking coal, and then carries out coefficient conversion and control and regulation on the belt rotating speed of the tracking scale, and the specific conversion method and the tracking process are as follows:
tracking the belt speed of the weighing = belt speed of the reference weighing x (100% -water content of the reference coal) x (100% -water content of the tracking coal) x dry basis ratio of the tracking coal/dry basis ratio of the reference coal; the actual weighing data of the final tracking scale is fed back by tracking the belt rotating speed of the scale.
2. The dry coal blending method according to claim 1, wherein: the first coal conveying belt is provided with a first iron remover, a shuttle groove is arranged between the first coal conveying belt and the second coal conveying belt, and a vibrator is arranged on the shuttle groove.
3. A dry coal blending method as claimed in claim 2, wherein: the bottom of the shuttle groove is also provided with a raw coal screen with a screen, the second coal conveying belt is arranged below the screen of the raw coal screen, and the tail end of the raw coal screen is provided with a bulk coal and sundry collecting bucket.
4. The dry coal blending method according to claim 1, wherein: the second coal conveying belt is provided with a second iron remover.
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| CN202211398203.1A CN115610950B (en) | 2022-11-09 | 2022-11-09 | Dry-base coal blending system and method |
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