CN111135934A - Machine-made gravel production process - Google Patents
Machine-made gravel production process Download PDFInfo
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- CN111135934A CN111135934A CN201911355807.6A CN201911355807A CN111135934A CN 111135934 A CN111135934 A CN 111135934A CN 201911355807 A CN201911355807 A CN 201911355807A CN 111135934 A CN111135934 A CN 111135934A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 74
- 238000012216 screening Methods 0.000 claims abstract description 33
- 238000007493 shaping process Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims 7
- 239000000428 dust Substances 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- 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
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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
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- 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
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a machine-made gravel production process, relates to the field of gravel production processes, and mainly comprises a first crushing process, a grinding and shaping process, a first screening process, a second crushing process, a circulating process and a second screening process. The invention has the beneficial effects that: the method has short process flow, and 1-2 times of crushing is reduced compared with the traditional process flow; the method uses less equipment, and the number of the equipment is reduced by more than 30% compared with the traditional process; maintenance personnel are reduced by more than 40%; compared with the traditional method, the method has less dust and is more environment-friendly.
Description
Technical Field
The invention relates to the field of sandstone production processes, in particular to a machine-made sandstone production process.
Background
The traditional machine-made sandstone production process needs 3-4 times of crushing, not only has long crushing process, more used equipment and more maintenance personnel, but also easily generates dust to cause environmental pollution, and is not beneficial to sustainable development.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a machine-made sandstone production process which has the advantages of shortening the process flow, reducing process equipment, reducing the workload of related personnel, protecting the ecological environment and promoting sustainable development.
The purpose of the invention is achieved by the following technical scheme: the machine-made sandstone production process comprises the following steps:
step one, a first crushing procedure: crushing the ore by a primary crusher to obtain ore a after primary crushing;
step two, a grinding and shaping process: mixing the ore a obtained in the step one with water in proportion and processing the mixture by crushing and grinding shaping equipment to obtain a mixture b of the ore and the water;
step three, a first screening process: screening the mixture b obtained in the second step by a primary screening device to obtain products c1, c2 and c3 which are respectively positioned on the upper layer, the middle layer and the lower layer of the device;
step four, a second crushing procedure: performing secondary crushing on the product c1 obtained in the step three through a secondary crusher to obtain a product d after secondary crushing;
step five, a circulating procedure: returning the product d obtained in the fourth step to the third step, mixing the product d into the product b, and repeating the operation of the third step and the operation of the fourth step;
step six, a second screening process: and (4) performing secondary screening on the product c3 obtained in the third step through a secondary screening device to obtain products e1, e2 and e3 which are respectively positioned on the upper layer, the middle layer and the lower layer of the device.
Further, the primary crusher in the step one is one or more of a gyratory crusher, a jaw crusher, a hammer crusher and an impact crusher; the diameter of the ore a is less than 350 mm.
Further, the grinding and shaping device in the second step is one or two of a semi-autogenous mill and an autogenous mill; the proportion of the ore a to the water is distributed according to the mass percent of the ore a being 65-95%; the diameter of the ore in the mixture b is less than 150 mm.
Further, the primary screening equipment in the third step is one or two of a linear screen, a circular vibration screen, a resonance screen and a probability screen; the primary screening equipment is a double-layer screen, the diameter of an upper-layer screen hole is 25-90 mm, and the diameter of a lower-layer screen hole is 5-75 mm.
Further, the secondary crusher in the fourth step is one or more of a cone crusher, a jaw crusher, a hammer crusher and an impact crusher; the diameter of the product d is less than 100 mm.
Further, the secondary screening equipment in the sixth step is one or two of a linear screen, a circular vibration screen, a resonance screen and a probability screen; the secondary screening equipment is a double-layer screen, the diameter of the upper-layer screen hole is 0.5-50 mm, and the diameter of the lower-layer screen hole is 0.03-37.5 mm.
Preferably, one or two of steel balls, steel bars and pebbles are added into the grinding and shaping device in the step two as a medium.
Preferably, the diameter of the medium is 40-200 mm; the volume of the medium added accounts for 3% -40% of the internal volume of the device.
The invention has the beneficial effects that:
1. the method has short process flow, and 1-2 times of crushing is reduced compared with the traditional process flow;
2. the method uses less equipment, and the number of the equipment is reduced by more than 30% compared with the traditional process;
3. maintenance personnel are reduced by more than 40%;
4. compared with the traditional method, the method has less dust and is more environment-friendly.
Drawings
FIG. 1 is a block diagram of the process flow of the present invention.
Detailed Description
Example 1: the machine-made gravel production process comprises the following steps:
step one, a first crushing procedure: crushing the ore by a gyratory crusher to obtain ore a after primary crushing, wherein the diameter of the ore a is less than 300 mm;
step two, a grinding and shaping process: distributing the ore a obtained in the step one and water according to the mass percent of the ore a of 85%, adding the ore a into a semi-autogenous mill, adding a steel ball with the diameter of 100mm into the semi-autogenous mill, wherein the volume of the added steel ball accounts for 5% of the internal volume of the semi-autogenous mill; obtaining a mixture b of the ore and water, wherein the diameter of the ore in the mixture b is less than 70 mm;
step three, a first screening process: screening the mixture b obtained in the step two for the first time through a double-layer linear sieve with the upper layer sieve pore diameter of 37.5mm and the lower layer sieve pore diameter of 19mm to obtain products c1, c2 and c3 which are respectively positioned on the upper layer, the middle layer and the lower layer of the double-layer linear sieve;
step four, a second crushing procedure: performing secondary crushing on the product c1 obtained in the step three through a cone crusher to obtain a product d after secondary crushing, wherein the diameter of the product d is less than 90 mm;
step five, a circulating procedure: returning the product d obtained in the fourth step to the third step, mixing the product d into the product b, and repeating the operation of the third step and the operation of the fourth step;
step six, a second screening process: sieving the product c3 obtained in the third step for the second time through a double-layer linear sieve with the diameter of the upper-layer sieve hole being 5mm and the diameter of the lower-layer sieve hole being 0.074mm to obtain products e1, e2 and e3 which are respectively positioned at the upper layer, the middle layer and the lower layer of the equipment;
the products c2, e1 and e2 are 3 products, and the diameter of the product e2 is 0.074-5 mm; the diameter of the product e1 is 5-19 mm; the diameter of the product c2 is 19-37.5 mm. Compared with the traditional process flow, the crushing time is reduced by 2 times, the used equipment is reduced by 43 percent, and the number of related maintenance personnel is reduced by 45 percent; no dust is generated in steps 2-6 of the method, and compared with the traditional process, the method has the advantages of less dust and environmental friendliness.
Example 2: the machine-made gravel production process comprises the following steps:
step one, a first crushing procedure: crushing the ore by a gyratory crusher to obtain ore a after primary crushing, wherein the diameter of the ore a is less than 250 mm;
step two, a grinding and shaping process: distributing the ore a obtained in the step one and water according to the mass percent of the ore a of 78%, adding the ore a into a semi-autogenous mill, adding a steel ball with the diameter of 120mm into the semi-autogenous mill, wherein the volume of the added steel ball accounts for 8% of the internal volume of the semi-autogenous mill; obtaining a mixture b of the ore and water, wherein the diameter of the ore in the mixture b is less than 60 mm;
step three, a first screening process: the mixture b obtained in the step two is sieved for the first time through a double-layer linear sieve with the diameter of an upper-layer sieve hole being 31.5mm and the diameter of a lower-layer sieve hole being 9.5mm, and products c1, c2 and c3 which are respectively positioned on the upper layer, the middle layer and the lower layer of the double-layer linear sieve are obtained;
step four, a second crushing procedure: performing secondary crushing on the product c1 obtained in the step three through a cone crusher to obtain a product d after secondary crushing, wherein the diameter of the product d is less than 45 mm;
step five, a circulating procedure: returning the product d obtained in the fourth step to the third step, mixing the product d into the product b, and repeating the operation of the third step and the operation of the fourth step;
step six, a second screening process: sieving the product c3 obtained in the third step for the second time through a double-layer linear sieve with the diameter of the upper-layer sieve hole being 5mm and the diameter of the lower-layer sieve hole being 0.074mm to obtain products e1, e2 and e3 which are respectively positioned at the upper layer, the middle layer and the lower layer of the equipment;
the products c2, e1 and e2 are 3 products, and the diameter of the product e2 is 0.074-5 mm; the diameter of the product e1 is 5-9.5 mm; the diameter of the product c2 is 9.5-31.5 mm. Compared with the traditional process flow, the crushing time is reduced by 2 times, the used equipment is reduced by 35 percent, and the number of related maintenance personnel is reduced by 38 percent; no dust is generated in steps 2-6 of the method, and compared with the traditional process, the method has the advantages of less dust and environmental friendliness.
Example 3: the machine-made gravel production process comprises the following steps:
step one, a first crushing procedure: crushing the ore by a gyratory crusher to obtain ore a after primary crushing, wherein the diameter of the ore a is less than 330 mm;
step two, a grinding and shaping process: distributing the ore a obtained in the step one and water according to the mass percent of the ore a of 85%, adding the ore a into a semi-autogenous mill, adding a steel bar with the diameter of 90mm into the semi-autogenous mill, wherein the volume of the added steel bar accounts for 5% of the internal volume of the semi-autogenous mill; obtaining a mixture b of the ore and water, wherein the diameter of the ore in the mixture b is less than 70 mm;
step three, a first screening process: screening the mixture b obtained in the second step for the first time through a double-layer linear sieve with the diameter of the upper-layer sieve hole being 63mm and the diameter of the lower-layer sieve hole being 26.5mm to obtain products c1, c2 and c3 which are respectively positioned on the upper layer, the middle layer and the lower layer of the double-layer linear sieve;
step four, a second crushing procedure: performing secondary crushing on the product c1 obtained in the step three through a cone crusher to obtain a product d after secondary crushing, wherein the diameter of the product d is less than 75 mm;
step five, a circulating procedure: returning the product d obtained in the fourth step to the third step, mixing the product d into the product b, and repeating the operation of the third step and the operation of the fourth step;
step six, a second screening process: sieving the product c3 obtained in the third step for the second time through a double-layer linear sieve with the diameter of the upper-layer sieve hole being 5mm and the diameter of the lower-layer sieve hole being 0.15mm to obtain products e1, e2 and e3 which are respectively positioned at the upper layer, the middle layer and the lower layer of the equipment;
the products c2, e1 and e2 are 3 products, and the diameter of the product e2 is 0.15-5 mm; the diameter of the product e1 is 5-26.5 mm; the diameter of the product c2 is 26.5-63 mm. Compared with the traditional process flow, the crushing time is reduced by 2 times, the used equipment is reduced by 45 percent, and the related maintenance personnel is reduced by 40 percent; no dust is generated in steps 2-6 of the method, and compared with the traditional process, the method has the advantages of less dust and environmental friendliness.
Example 4: the machine-made gravel production process comprises the following steps:
step one, a first crushing procedure: crushing the ore by a gyratory crusher to obtain ore a after primary crushing, wherein the diameter of the ore a is less than 200 mm;
step two, a grinding and shaping process: distributing the ore a obtained in the step one and water according to the mass percent of the ore a of 82%, adding the ore a into a semi-autogenous mill, adding a steel ball with the diameter of 60mm into the semi-autogenous mill, wherein the volume of the added steel ball accounts for 20% of the internal volume of the semi-autogenous mill; obtaining a mixture b of the ore and water, wherein the diameter of the ore in the mixture b is less than 60 mm;
step three, a first screening process: screening the mixture b obtained in the second step for the first time through a double-layer linear sieve with the diameter of the sieve hole at the upper layer being 20mm and the diameter of the sieve hole at the lower layer being 10mm to obtain products c1, c2 and c3 which are respectively positioned at the upper layer, the middle layer and the lower layer of the double-layer linear sieve;
step four, a second crushing procedure: performing secondary crushing on the product c1 obtained in the step three through a cone crusher to obtain a product d after secondary crushing, wherein the diameter of the product d is less than 45 mm;
step five, a circulating procedure: returning the product d obtained in the fourth step to the third step, mixing the product d into the product b, and repeating the operation of the third step and the operation of the fourth step;
step six, a second screening process: sieving the product c3 obtained in the third step for the second time through a double-layer linear sieve with the diameter of the upper-layer sieve hole being 4mm and the diameter of the lower-layer sieve hole being 0.074mm to obtain products e1, e2 and e3 which are respectively positioned at the upper layer, the middle layer and the lower layer of the equipment;
the products c2, e1 and e2 are 3 products, and the diameter of the product e2 is 0.074-4 mm; the diameter of the product e1 is 4-10 mm; the diameter of the product c2 is 10-20 mm. Compared with the traditional process flow, the crushing time is reduced by 2 times, the used equipment is reduced by 45 percent, and the related maintenance personnel is reduced by 50 percent; no dust is generated in steps 2-6 of the method, and compared with the traditional process, the method has the advantages of less dust and environmental friendliness.
According to the embodiment, compared with the traditional process flow, the crushing frequency is reduced, the process flow is shortened, the required process equipment is greatly reduced, the required maintenance personnel is also greatly reduced, the generation of dust is reduced, the ecological environment is effectively protected, the sustainable development is promoted, and the method can be widely popularized and applied to the field of sandstone production.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (8)
1. A machine-made gravel production process is characterized in that: the method comprises the following steps:
step one, a first crushing procedure: crushing the ore by a primary crusher to obtain ore a after primary crushing;
step two, a grinding and shaping process: mixing the ore a obtained in the step one with water in proportion and processing the mixture by crushing and grinding shaping equipment to obtain a mixture b of the ore and the water;
step three, a first screening process: screening the mixture b obtained in the second step by a primary screening device to obtain products c1, c2 and c3 which are respectively positioned on the upper layer, the middle layer and the lower layer of the device;
step four, a second crushing procedure: performing secondary crushing on the product c1 obtained in the step three through a secondary crusher to obtain a product d after secondary crushing;
step five, a circulating procedure: returning the product d obtained in the fourth step to the third step, mixing the product d into the product b, and repeating the operation of the third step and the operation of the fourth step;
step six, a second screening process: and (4) performing secondary screening on the product c3 obtained in the third step through a secondary screening device to obtain products e1, e2 and e3 which are respectively positioned on the upper layer, the middle layer and the lower layer of the device.
2. The machine-made sand production process according to claim 1, wherein: the primary crusher in the step one is one or more of a gyratory crusher, a jaw crusher, a hammer crusher and a counterattack crusher; the diameter of the ore a is less than 350 mm.
3. The machine-made sand production process according to claim 1, wherein: the grinding and shaping equipment in the second step is one or two of a semi-autogenous mill and an autogenous mill; the proportion of the ore a to the water is distributed according to the mass percent of the ore a being 65-95%; the diameter of the ore in the mixture b is less than 150 mm.
4. The machine-made sand production process according to claim 1, wherein: the primary screening equipment in the step three is one or two of a linear screen, a circular vibration screen, a resonance screen and a probability screen; the primary screening equipment is a double-layer screen, the diameter of an upper-layer screen hole is 25-90 mm, and the diameter of a lower-layer screen hole is 5-75 mm.
5. The machine-made sand production process according to claim 1, wherein: the secondary crusher in the step four is one or more of a cone crusher, a jaw crusher, a hammer crusher and a counterattack crusher; the diameter of the product d is less than 100 mm.
6. The machine-made sand production process according to claim 1, wherein: the secondary screening equipment in the sixth step is one or two of a linear screen, a circular vibration screen, a resonance screen and a probability screen; the secondary screening equipment is a double-layer screen, the diameter of the upper-layer screen hole is 0.5-50 mm, and the diameter of the lower-layer screen hole is 0.03-37.5 mm.
7. The machine-made sand production process according to claim 1, wherein: and adding one or two of steel balls, steel bars and pebbles into the crushing and grinding shaping equipment in the second step as a medium.
8. The machine-made sand production process according to claim 7, wherein: the diameter of the medium is 40-200 mm; the volume of the medium added accounts for 3% -40% of the internal volume of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355807.6A CN111135934A (en) | 2019-12-25 | 2019-12-25 | Machine-made gravel production process |
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| CN201911355807.6A CN111135934A (en) | 2019-12-25 | 2019-12-25 | Machine-made gravel production process |
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| CN111135934A true CN111135934A (en) | 2020-05-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500007A (en) * | 2020-12-25 | 2021-03-16 | 日昌升建筑新材料设计研究院有限公司 | Dry production process for flexible machine-made sandstone |
| CN112619852A (en) * | 2020-12-25 | 2021-04-09 | 日昌升建筑新材料设计研究院有限公司 | Dry-wet production process for flexible machine-made sandstone |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201586545U (en) * | 2009-12-18 | 2010-09-22 | 乔素钦 | Ball milling or rod milling sand maker |
| CN105236782A (en) * | 2015-09-16 | 2016-01-13 | 重庆富皇混凝土有限公司 | Machine-made sand production system, and production method and application thereof |
| CN207942286U (en) * | 2018-03-10 | 2018-10-09 | 毕节双山开发区磐石建材有限公司 | A kind of Machine-made Sand uniforming device |
| CN109731661A (en) * | 2019-02-28 | 2019-05-10 | 贵州成智重工科技有限公司 | A kind of high-quality sandstone aggregate five is enjoyed a double blessing dry milling production line and processing method |
| CN110215999A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of Machine-made Sand lapicide's skill of short route |
| CN110215997A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of Machine-made Sand lapicide's skill of self raising flour dirt |
| CN110215996A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of mechanism sandstone production technology |
| CN110215998A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of simplified mechanism sandstone production technology |
-
2019
- 2019-12-25 CN CN201911355807.6A patent/CN111135934A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201586545U (en) * | 2009-12-18 | 2010-09-22 | 乔素钦 | Ball milling or rod milling sand maker |
| CN105236782A (en) * | 2015-09-16 | 2016-01-13 | 重庆富皇混凝土有限公司 | Machine-made sand production system, and production method and application thereof |
| CN207942286U (en) * | 2018-03-10 | 2018-10-09 | 毕节双山开发区磐石建材有限公司 | A kind of Machine-made Sand uniforming device |
| CN109731661A (en) * | 2019-02-28 | 2019-05-10 | 贵州成智重工科技有限公司 | A kind of high-quality sandstone aggregate five is enjoyed a double blessing dry milling production line and processing method |
| CN110215999A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of Machine-made Sand lapicide's skill of short route |
| CN110215997A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of Machine-made Sand lapicide's skill of self raising flour dirt |
| CN110215996A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of mechanism sandstone production technology |
| CN110215998A (en) * | 2019-06-18 | 2019-09-10 | 日昌升集团有限公司 | A kind of simplified mechanism sandstone production technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500007A (en) * | 2020-12-25 | 2021-03-16 | 日昌升建筑新材料设计研究院有限公司 | Dry production process for flexible machine-made sandstone |
| CN112619852A (en) * | 2020-12-25 | 2021-04-09 | 日昌升建筑新材料设计研究院有限公司 | Dry-wet production process for flexible machine-made sandstone |
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Application publication date: 20200512 |