CN113695048A - Sandstone aggregate production system and production method thereof - Google Patents
Sandstone aggregate production system and production method thereof Download PDFInfo
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- CN113695048A CN113695048A CN202110850979.1A CN202110850979A CN113695048A CN 113695048 A CN113695048 A CN 113695048A CN 202110850979 A CN202110850979 A CN 202110850979A CN 113695048 A CN113695048 A CN 113695048A
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- screening net
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
Abstract
The invention discloses a sandstone aggregate production system, which comprises a coarse crushing device, a middle crushing device and a screening device, wherein the screening device comprises a first layer of screening net, a second layer of screening net and a third layer of screening net which are arranged at intervals up and down, the screen holes of the upper layer of screening net are larger than those of the lower layer of screening net, a blanking device is arranged above the first layer of screening net, the sandstone aggregate production system also comprises a first finished product bin, a second finished product bin, a third finished product bin, a fine crushing device for processing filter residues of the first layer of screening net and a sand making device for processing the filter residues of the second layer of screening net and/or the third layer of screening net, and the discharge port of the fine crushing device is connected with the blanking device. Also discloses a sandstone aggregate production method, which is carried out by adopting a sandstone aggregate production system and comprises the following steps: crushing for the first time; crushing for the second time; screening; and (5) crushing for the third time. The sandstone aggregate production system and the production method thereof have the advantages of simple production and high utilization rate of raw materials, and can produce multi-level sandstone and improve the production efficiency and the product quality.
Description
Technical Field
The invention relates to the technical field of crushing equipment, in particular to a sandstone aggregate production system and a production method thereof.
Background
Along with the rapid development of economy, the demand of the sandstone aggregate is continuously increased, and the development and the application of the production process of the sandstone aggregate production system are more and more valued by the industry people. In the traditional machine-made sandstone aggregate production scheme, the main production process is two-stage crushing and secondary screening or three-stage crushing and secondary screening, the production process is relatively complex, the occupied area is large, the raw material waste amount is large, the production is unbalanced, the energy consumption is high, the efficiency is low, and the production cost is relatively high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a sandstone aggregate production system and a production method thereof, wherein the sandstone aggregate production system is simple in production and high in raw material utilization rate, can produce multi-level sandstone, and can improve the production efficiency and the product quality.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a grit aggregate production system, is including the coarse crushing device, well garrulous device and the screening plant that are used for processing the grit aggregate in proper order, screening plant includes first layer screening net, second floor screening net and the third layer screening net that the interval set up from top to bottom, the upper strata the sieve mesh of screening net is greater than lower floor screening net, the top of first layer screening net is equipped with doffer, grit aggregate production system is still including the first finished product storehouse that is used for collecting second floor screening net filter residue, the second finished product storehouse that is used for collecting third floor screening net filter residue, the third finished product storehouse that is used for collecting the grit through third layer screening net sieve mesh, the fine crushing device that is used for processing first floor screening net and is used for processing second floor screening net and/or the system sand device of third layer screening net filter residue, fine crushing device's discharge gate and doffer are connected.
As a further improvement of the above technical solution:
and a discharge port of the sand making device is connected with the blanking device.
And a discharge port of the sand making device is connected with a corresponding finished product bin.
Each screening net is arranged in an inclined mode, the bottom end of the first layer of screening net is connected with the fine crushing device, the bottom end of the second layer of screening net is connected with the first finished product bin or the sand making device, and the bottom end of the third layer of screening net is connected with the second finished product bin or the sand making device.
And a sand washer is arranged below the third-layer screening net, a dewatering screen is arranged at a discharge port of the sand washer, and a third finished product bin is arranged below the dewatering screen.
And a semi-finished product bin is arranged between the coarse crushing device and the middle crushing device.
A first conveyor is arranged between the coarse crushing device and the semi-finished product bin, and a first feeder is arranged between the semi-finished product bin and the middle crushing device.
The first feeding machine is suspended below a discharge port of the semi-finished product bin, and a second conveyor is arranged between the first feeding machine and the middle crushing device.
The gravel aggregate production system further comprises a raw stone receiving pit, and a second feeder is arranged between the raw stone receiving pit and the coarse crushing device.
The sandstone aggregate production method is carried out by adopting the sandstone aggregate production system, and comprises the following steps:
crushing for the first time: conveying the raw stone to a coarse crushing device for primary crushing;
and (3) crushing for the second time: conveying the sand and stone subjected to primary crushing to a secondary crushing device;
screening: conveying the crushed sand and stone for the second time to a first layer of screening net, sequentially screening through each layer of screening net, collecting the sand and stone passing through the screen holes of a third layer of screening net in a third finished product bin, collecting filter residues of a second layer of screening net in a second finished product bin or conveying the filter residues to a sand making device for shaping, and collecting the shaped sand and stone in a corresponding finished product bin or conveying the shaped sand and stone to the first layer of screening net for screening;
and (3) crushing for the third time: and conveying filter residues of the first layer of screening net to a fine crushing device for third crushing, and conveying crushed sand and stone to the first layer of screening net for screening treatment.
Compared with the prior art, the invention has the advantages that:
the invention relates to a sandstone aggregate production system, which has the production principle that: conveying the raw stone to a coarse crushing device, feeding the raw stone in a full cavity of the coarse crushing device, and crushing for the first time; conveying the sand and stone subjected to primary crushing to a secondary crushing device; the crushed sand and stone for the second time are sent to a first layer of screening net and are sequentially screened by each layer of screening net, the sand and stone passing through the screen holes of a third layer of screening net are collected in a third finished product bin, the filter residue of a second layer of screening net is collected in a second finished product bin or is sent to a sand making device for shaping treatment, the shaped sand and stone are collected in a corresponding finished product bin or are sent to the first layer of screening net for screening treatment, if the mesh opening of the first layer of screening net is 31.5mm, the mesh opening of the second layer of screening net is 19mm, and the mesh opening of the third layer of screening net is 5mm, then, the sand collected by the third finished product bin is less than 5mm, the sand collected by the second finished product bin is 5-19 mm, the sand collected by the first finished product bin is 19-31.5 mm, part of the 5-31.5 mm sand enters a sand making device for shaping according to actual needs, and the shaped sand is collected in the corresponding finished product bin or sent to the first layer of screening net for screening treatment; and conveying filter residues of the first layer of screening net to a fine crushing device for third crushing, and conveying crushed sand and stone to the first layer of screening net for screening treatment. Screening is carried out through the three-layer screening net, and the multi-level grit product is obtained, through the circulating crushing effect of the fine crushing device, the production efficiency and the utilization rate of raw materials are improved, and through the shaping effect of the sand making device, the production efficiency and the product quality are improved. This grit aggregate production system production is simple, material utilization is high, can produce the multistage grit and can improve production efficiency and product quality.
The production method of the sandstone aggregate is carried out by adopting the sandstone aggregate production system, and is carried out by screening through the three layers of screening nets to obtain multi-level sandstone products, the production efficiency and the utilization rate of raw materials are improved through the circulating crushing function of the fine crushing device, and the production efficiency and the product quality are improved through the shaping function of the sand making device. The production method of the sandstone aggregate is simple in production and high in raw material utilization rate, and can produce multi-level sandstone and improve the production efficiency and the product quality.
Drawings
FIG. 1 is a schematic view of the structure of a sand aggregate production system of the present invention.
FIG. 2 is a schematic diagram of the method of producing sand aggregate according to the present invention.
The reference numerals in the figures denote:
1. a coarse crushing device; 11. a semi-finished product bin; 12. a first conveyor; 13. a first feeder; 14. a raw stone receiving pit; 15. a second feeder; 16. a second conveyor; 2. a middle crushing device; 3. a screening device; 31. a first layer of screening mesh; 32. a second layer of screening net; 33. a third layer of screening mesh; 331. washing a sand machine; 332. dewatering screen; 4. a blanking device; 5. a first finished product bin; 6. a second finished product bin; 7. a third finished product bin; 8. a fine crushing device; 9. a sand making device.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
The first embodiment is as follows:
FIG. 1 shows an embodiment of the sand-aggregate production system of the present invention, which comprises a coarse crushing device 1, a middle crushing device 2 and a sieving device 3 for processing sand-aggregate in turn, wherein the sieving device 3 comprises a first layer sieving net 31, a second layer sieving net 32 and a third layer sieving net 33 which are arranged at intervals up and down, the sieve holes of the upper layer sieving net are larger than those of the lower layer sieving net, a blanking device 4 is arranged above the first layer sieving net 31, the sand-aggregate production system further comprises a first finished product bin 5 for collecting the filter residue of the second layer sieving net 32, a second finished product bin 6 for collecting the filter residue of the third layer sieving net 33, a third finished product bin 7 for collecting sand passing through the sieve holes of the third layer sieving net 33, a fine crushing device 8 for processing the filter residue of the first layer sieving net 31 and a sand making device 9 for processing the filter residue of the second layer sieving net 32 and/or the third layer sieving net 33, the discharge port of the fine crushing device 8 is connected with the blanking device 4.
The production principle is as follows: conveying the raw stone to a coarse crushing device 1, feeding the coarse crushing device 1 in a full cavity, and crushing for the first time; conveying the sand and stone subjected to primary crushing to a secondary crushing device 2; conveying the crushed sand and stone for the second time to a first layer of screening net 31, sequentially screening the sand and stone through each layer of screening net, collecting the sand and stone passing through the screen holes of a third layer of screening net 33 in a third finished product bin 7, collecting filter residues of a second layer of screening net 32 in a second finished product bin 6 or conveying the sand and stone to a sand making device 9 for shaping treatment, collecting the shaped sand and stone in a corresponding finished product bin or conveying the shaped sand and stone to the first layer of screening net 31 for screening treatment, wherein if the screen hole diameter of the first layer of screening net 31 is 31.5mm, the screen hole diameter of the second layer of screening net 32 is 19mm, and the screen hole diameter of the third layer of screening net 33 is 5mm, the sand and stone collected by the third finished product bin 7 is less than 5mm, the sand and stone collected by the second finished product bin 6 is 5-19 mm, the sand and stone collected by the first finished product bin 5 is 19-31.5 mm, and part of the sand and stone collected by the third layer of screening net 31.5mm enters the sand making device 9 for shaping treatment according to actual needs, and the shaped sand and the finished product bin collected by the corresponding finished product bin or the first layer of screening net 31 is conveyed to the screening net 31 for shaping treatment; and conveying filter residues of the first layer of screening net 31 to the fine crushing device 8 for third crushing, and conveying crushed sand to the first layer of screening net 31 for screening treatment. Screening is carried out through three-layer screening net, obtains the grit product of multilevel, and through the circulation crushing effect of device 8 in small, broken bits, improved the utilization ratio of production efficiency and raw materials, through the plastic effect of system sand device 9, improved production efficiency and product quality. This grit aggregate production system production is simple, material utilization is high, can produce the multistage grit and can improve production efficiency and product quality.
In this embodiment, the discharge port of the sand making device 9 is connected with the blanking device 4. The grit after the shaping of system sand device 9 gets into screening plant 3 through doffer 4 again and sieves, can screen out the subtle (grit less than plastic sand) that produces in the plastic process, has improved the equilibrium of product, has further improved the quality of product promptly. Of course, the discharge port of the sand making device 9 may also be connected to the corresponding finished product bin, and the shaped sand processed by the sand making device 9 is directly collected in the corresponding finished product bin as a product.
In this embodiment, the screening nets are obliquely arranged, the bottom end of the first layer of screening net 31 is connected with the fine crushing device 8, the bottom end of the second layer of screening net 32 is connected with the first finished product bin 5 or the sand making device 9, and the bottom end of the third layer of screening net 33 is connected with the second finished product bin 6 or the sand making device 9. The filter residues of the first layer of screening net 31 roll out from the bottom end of the first layer of screening net 31 under the action of gravity, enter the fine crushing device 8, are crushed for the third time by the fine crushing device 8 and then are conveyed to the screening device 3 for screening; the first finished product bin 5 is arranged below the screening device 3, and filter residues of the second layer of screening net 32 enter the first finished product bin 5 under the action of gravity to be collected or enter the sand making device 9 to be shaped; the second finished product bin 6 is arranged below the screening device 3, and filter residues of the third layer of screening net 33 enter the second finished product bin 6 under the action of gravity to be collected or enter the sand making device 9 to be subjected to shaping treatment. Because the screening net slope sets up, the grit can be followed the screening net and rolled down, reaches the effect of automatic screening. The screening nets are preferably arranged in parallel up and down.
In this embodiment, a sand washer 331 is disposed below the third layer screening net 33, a dewatering screen 332 is disposed at a discharge port of the sand washer 331, and the third finished product bin 7 is disposed below the dewatering screen 332. The gravels passing through the screen holes of the third layer screening net 33 fall into the sand washer 331 under the action of gravity, are washed by the sand washer 331, are dehydrated by the dewatering screen 332 after the washing, and are then conveyed to the third finished product bin 7 for collection. The sand processed by the sand washer 331 and the dewatering screen 332 has better quality.
In this embodiment, a semi-finished product bin 11 is disposed between the coarse crushing device 1 and the intermediate crushing device 2. The semi-finished product bin 11 has a buffer function on the semi-finished product crushed by the coarse crushing device 1, so that the front and rear processes of the semi-finished product bin 11 can be independently performed.
In this embodiment, be equipped with first conveyer 12 between coarse crushing device 1 and the semi-manufactured goods feed bin 11, be equipped with first batcher 13 between semi-manufactured goods feed bin 11 and the well garrulous device 2. The semi-finished sand crushed by the coarse crushing device 1 is conveyed to a semi-finished product bin 11 through a first conveyor 12, and the semi-finished sand in the semi-finished product bin 11 is conveyed to the intermediate crushing device 2 through a first feeder 13 for secondary crushing.
In this embodiment, the first feeding machine 13 is suspended below the discharge port of the semi-finished product bin 11, and the second conveyor 16 is arranged between the first feeding machine 13 and the middle crushing device 2. The action of gravity of the semi-finished product grit in the semi-finished product feed bin 11 drops to first batcher 13 down, has reduced the equipment of middle conveying equipment, and of course, when actual in service, 11 discharge gates at the semi-finished product feed bin are provided with the valve. The first feeder 13 is connected with the feeding hole of the middle crushing device 2 through the second conveyor 16, and the conveying distance is enlarged.
In this embodiment, grit aggregate production system still includes former stone receiving pit 14, is equipped with second batcher 15 between former stone receiving pit 14 and coarse crushing device 1. The conveyor is a one-way belt conveyor.
The specific production process comprises the following steps: gravel aggregate (crude stone smaller than 700 mm) is transported to a crude stone receiving pit 14 through a transport vehicle and poured into the crude stone receiving pit 14, a production line is started, the crude stone enters a coarse crushing device 1 through a second feeder 15 (a bar feeder), the coarse crushing device 1 is fed in a full cavity for primary crushing, a mine discharge port of the coarse crushing device 1 is adjusted to be 240mm, crushed material coarse particles enter a semi-finished product bin 11 through a one-way rubber belt conveyor, the crushed material coarse particles are uniformly fed through a first feeder 13 suspended in a gallery at the bottom of the semi-finished product bin 11 and are sent to a middle crushing device 2 through a second conveyor 16 (a one-way rubber belt conveyor) for secondary crushing; the crushed materials are conveyed into a screening device 3 through a one-way rubber belt conveyor, wherein 19-31.5 mm materials (sand and stone) and 5-19 mm materials are discharged from a discharging hopper of the screening device 3 and are respectively conveyed into corresponding finished product bins (a first finished product bin 5 and a second finished product bin 6) through the one-way rubber belt conveyor; the materials with the diameter less than 5mm are discharged from the discharge hopper from the screening device 3 to be gathered, enter the sand washer 331 to be washed, and then are dehydrated through the dehydration screen 332, and the dehydrated gravels are conveyed to the third finished product bin 7 through the one-way conveying adhesive tape machine; materials larger than 31.5mm are fed from a discharge hopper of the screening device 3 and are sent into the fine crushing device 8 by the one-way belt conveyor to be crushed in three sections, and the fine crushing device 8 is sent into the screening device 3 by the one-way belt conveyor to be screened until qualified sandstone aggregate and machine-made sand are screened; partial 5-31.5 mm materials enter the sand making device 9 for shaping according to actual needs, and the shaped materials are conveyed into the screening device 3 by the one-way rubber belt conveyor for screening (the shaped materials can also be directly conveyed into corresponding finished product bins by the one-way rubber belt conveyor). Finished sand and stone (finished aggregate) can be loaded by a loader and transported to a material using position by a finished aggregate transport vehicle.
Example two:
fig. 2 shows an example of the sand aggregate production method of the present invention, which is performed using the sand aggregate production system described above, and includes the steps of:
first break (coarse): conveying the raw stone to a coarse crushing device 1 for primary crushing;
second crushing (medium crushing): conveying the sand and stone subjected to primary crushing to a secondary crushing device 2;
screening: the crushed sand and stone for the second time are sent to a first layer of screening net 31 and are sequentially screened by each layer of screening net, the sand and stone passing through the screen holes of a third layer of screening net 33 are collected in a third finished product bin 7, the filter residue of a second layer of screening net 32 is collected in a second finished product bin 6 or sent to a sand making device 9 for shaping treatment, and the shaped sand and stone are collected in corresponding finished product bins or sent to the first layer of screening net 31 for screening treatment;
third crushing (fine crushing): and conveying filter residues of the first layer of screening net 31 to the fine crushing device 8 for third crushing, and conveying crushed sand to the first layer of screening net 31 for screening treatment.
Screening is carried out through three-layer screening net, obtains the grit product of multilevel, and through the circulation crushing effect of device 8 in small, broken bits, improved the utilization ratio of production efficiency and raw materials, through the plastic effect of system sand device 9, improved production efficiency and product quality. The production method of the sandstone aggregate is simple in production and high in raw material utilization rate, and can produce multi-level sandstone and improve the production efficiency and the product quality.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a grit aggregate production system which characterized in that: including coarse crushing device (1), well garrulous device (2) and screening plant (3) that are used for processing grit aggregate in proper order, screening plant (3) are including first layer screening net (31), second floor screening net (32) and third layer screening net (33) that the interval set up from top to bottom, upper strata the sieve mesh of screening net is greater than lower floor screening net, the top of first layer screening net (31) is equipped with doffer (4), grit aggregate production system is still including first finished product storehouse (5) that is used for collecting second floor screening net (32) filter residue, second finished product storehouse (6) that is used for collecting third layer screening net (33) filter residue, third finished product storehouse (7) that is used for collecting the grit through third layer screening net (33) filter residue, sand making device (9) that are used for processing second floor screening net (32) and/or third layer screening net (33) filter residue, and a discharge port of the fine crushing device (8) is connected with the blanking device (4).
2. The sand aggregate production system of claim 1, wherein: and a discharge port of the sand making device (9) is connected with the blanking device (4).
3. The sand aggregate production system of claim 1, wherein: and a discharge port of the sand making device (9) is connected with a corresponding finished product bin.
4. The sand aggregate production system of claim 1, wherein: each screening net is obliquely arranged, the bottom end of the first screening net (31) is connected with the fine crushing device (8), the bottom end of the second screening net (32) is connected with the first finished product bin (5) or the sand making device (9), and the bottom end of the third screening net (33) is connected with the second finished product bin (6) or the sand making device (9).
5. The sand aggregate production system of claim 1, wherein: the below of third layer screening net (33) is equipped with sand washer (331), the discharge gate of sand washer (331) is equipped with dewatering screen (332), the below of dewatering screen (332) is located in third finished product storehouse (7).
6. The sand aggregate production system of claim 1, wherein: a semi-finished product bin (11) is arranged between the coarse crushing device (1) and the middle crushing device (2).
7. The sand aggregate production system of claim 6, wherein: be equipped with first conveyer (12) between coarse crushing device (1) and semi-manufactured goods feed bin (11), be equipped with first batcher (13) between semi-manufactured goods feed bin (11) and well garrulous device (2).
8. The sand aggregate production system of claim 7, wherein: the first feeding machine (13) is hung below a discharge hole of the semi-finished product bin (11), and a second conveyor (16) is arranged between the first feeding machine (13) and the middle crushing device (2).
9. The sand aggregate production system according to any one of claims 1 to 8, wherein: the gravel aggregate production system further comprises a raw stone receiving pit (14), and a second feeder (15) is arranged between the raw stone receiving pit (14) and the coarse crushing device (1).
10. A sand aggregate production method using the sand aggregate production system according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
crushing for the first time: conveying the raw stone to a coarse crushing device (1) for primary crushing;
and (3) crushing for the second time: conveying the sand and stone subjected to the first crushing to a middle crushing device (2) for secondary crushing;
screening: the crushed sand and stone for the second time are sent to a first layer of screening net (31), are sequentially screened through each layer of screening net, the sand and stone passing through the sieve holes of a third layer of screening net (33) are collected in a third finished product bin (7), the filter residue of a second layer of screening net (32) is collected in a second finished product bin (6) or is sent to a sand making device (9) for shaping treatment, and the shaped sand and stone are collected in a corresponding finished product bin or are sent to the first layer of screening net (31) for screening treatment;
and (3) crushing for the third time: and (3) conveying filter residues of the first layer of screening net (31) to a fine crushing device (8) for third crushing, and conveying crushed sand and stone to the first layer of screening net (31) for screening treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110850979.1A CN113695048A (en) | 2021-07-27 | 2021-07-27 | Sandstone aggregate production system and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110850979.1A CN113695048A (en) | 2021-07-27 | 2021-07-27 | Sandstone aggregate production system and production method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950699A (en) * | 2022-04-08 | 2022-08-30 | 浙江华东工程建设管理有限公司 | Double-powder-selecting full-dry-method desilting system and method after coarse crushing of aggregate processing system |
| CN115069388A (en) * | 2022-06-13 | 2022-09-20 | 四川兴城港瑞建材有限公司 | Premixed concrete sandstone aggregate production screening system and operation method |
| CN115318417A (en) * | 2022-08-22 | 2022-11-11 | 中国电建集团成都勘测设计研究院有限公司 | Method and system for preparing sandstone aggregate in TBM excavated material tunnel |
| CN115970846B (en) * | 2022-12-28 | 2024-04-26 | 中国水利水电第三工程局有限公司 | Sand and stone processing method for producing twelve aggregates |
-
2021
- 2021-07-27 CN CN202110850979.1A patent/CN113695048A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950699A (en) * | 2022-04-08 | 2022-08-30 | 浙江华东工程建设管理有限公司 | Double-powder-selecting full-dry-method desilting system and method after coarse crushing of aggregate processing system |
| CN114950699B (en) * | 2022-04-08 | 2023-09-08 | 浙江华东工程建设管理有限公司 | Double-powder-selecting full-dry-method desliming system and method after coarse crushing of aggregate processing system |
| CN115069388A (en) * | 2022-06-13 | 2022-09-20 | 四川兴城港瑞建材有限公司 | Premixed concrete sandstone aggregate production screening system and operation method |
| CN115069388B (en) * | 2022-06-13 | 2023-11-03 | 四川兴城港瑞建材有限公司 | Pre-mixed concrete gravel aggregate production screening system and operation method |
| CN115318417A (en) * | 2022-08-22 | 2022-11-11 | 中国电建集团成都勘测设计研究院有限公司 | Method and system for preparing sandstone aggregate in TBM excavated material tunnel |
| CN115970846B (en) * | 2022-12-28 | 2024-04-26 | 中国水利水电第三工程局有限公司 | Sand and stone processing method for producing twelve aggregates |
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