CN113798036A - Dry-process combined production process for machine-made sand - Google Patents
Dry-process combined production process for machine-made sand Download PDFInfo
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- CN113798036A CN113798036A CN202110995557.3A CN202110995557A CN113798036A CN 113798036 A CN113798036 A CN 113798036A CN 202110995557 A CN202110995557 A CN 202110995557A CN 113798036 A CN113798036 A CN 113798036A
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- sand
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- 239000004576 sand Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000001035 drying Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 claims abstract description 50
- 238000012216 screening Methods 0.000 claims abstract description 29
- 239000000843 powder Substances 0.000 claims abstract description 23
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method 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
-
- 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
-
- 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
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- 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
-
- 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
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/20—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating
- B02C23/22—Adding fluid, other than for crushing or disintegrating by fluid energy after crushing or disintegrating with recirculation of material to crushing or disintegrating zone
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a machine-made sand dry-method combined production process, which relates to the field of sand production processes and comprises a first crushing process, a second crushing process, a first screening process, a circulating process, a vertical shaft sand making process, a roller press sand making process, a powder removing process, a second screening process and a recycling process. Compared with the prior art, the invention has the beneficial effects that: the invention has the advantages of the traditional dry-method sand-making vertical shaft production, can greatly improve the sand-making quantity by combining with a roller press, and has good sand-making quality, fineness modulus and grade; two products with the diameter of less than 0.075mm and the diameter of 0.075-3mm can be obtained, reaching the level of fine sand. Compared with the traditional process, the invention has the advantages of low energy consumption, cleanness, environmental protection and greatly improved efficiency.
Description
Technical Field
The invention relates to the field of sandstone production processes, in particular to a dry-method combined production process for machine-made sand.
Background
The traditional machine-made sand process is generally produced according to a dry method or a wet method, the yield of a single device for producing sand by the dry method is small, a vertical shaft impact crusher or a roller press is generally adopted, a vertical shaft wear-resistant part and a throwing head generally need to be replaced for 7-10 days, and the maintenance is troublesome; the vertical shaft has low yield, the sand making grain type is good, the roller press has large yield and the grain type is not good, so the combination of the vertical shaft and the roller press is the best way for improving the product quality and the efficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a machine-made sand dry-method combined production process which has the advantages of high quality of made sand, good fineness modulus and grade preparation, cleanness and environmental protection.
The purpose of the invention is achieved by the following technical scheme: the dry-process combined production process of the machine-made sand comprises the following steps:
step one, a first crushing procedure:
carrying out primary crushing on the ore crude stone by primary crushing equipment to obtain a product a after the primary crushing;
step two, a second crushing procedure:
performing secondary crushing on the product a obtained in the step one through secondary crushing equipment to obtain a product b after secondary crushing;
step three, a first screening process:
performing primary screening on the product b obtained in the step two through primary screening equipment to obtain products c1, c2 and c3 with sequentially increased diameters;
step four, a circulating procedure:
returning the product c3 obtained in the step three to the step two, and adding the product c3 into the secondary crushing equipment;
step five, a vertical shaft sand making process:
carrying out vertical shaft crushing on the product c1 obtained in the step three through vertical shaft equipment to obtain a vertical shaft crushed product d 1;
step six, a roller press sand making process:
rolling and crushing the product c2 obtained in the step three through rolling equipment to obtain a rolled and crushed product d 2;
step seven, a powder removing procedure:
mixing the products d1 and d2 obtained in the fifth step and the sixth step, and adding the mixture into a powder removing device for powder removal to obtain the products e1 and e2 after powder removal;
step eight, a second screening process:
performing secondary screening on the product e2 obtained in the step seven through secondary screening equipment to obtain products f1, f2 and f3 with sequentially increased diameters;
step nine, a recycling process:
the product f3 from step eight was returned to step five and added to the vertical shaft apparatus.
Preferably, the primary crushing equipment in the first step is one or more of a gyratory crusher, a jaw crusher, a counterattack crusher and a hammer crusher, and the diameter of the product a is less than 180 mm.
As a preferable technical scheme, the secondary crushing equipment in the step two is one or more of a single-cylinder cone crusher, a counterattack crusher and a hammer crusher; the diameter of the product b is less than 50 mm.
As a preferable technical scheme, the primary screening equipment in the third step is of a double-layer screen structure, one of a linear screen, a circular vibration screen, a resonance screen and a probability screen is adopted, the diameter of an upper-layer screen hole of the primary screening equipment is 40-41mm, and the diameter of a lower-layer screen hole of the primary screening equipment is 15-16 mm; the product c3 can not pass through the upper layer sieve holes, the product c2 can pass through the upper layer sieve holes and can not pass through the lower layer sieve holes, and the product c1 can pass through the upper layer sieve holes and the lower layer sieve holes.
As a preferable technical scheme, the vertical shaft equipment in the fifth step is a vertical shaft type sand making machine; the product d1 had a diameter of less than 5 mm.
As a preferred technical scheme, the rolling equipment in the sixth step is a roller press sand making machine; the product d2 had a diameter of less than 5 mm.
As a preferred technical scheme, the powder removing equipment in the step seven is a powder concentrator; the product e1 is stone powder with the diameter of less than 0.075mm, and the product e2 is sand.
As a preferred technical scheme, the secondary screening equipment in the step eight is an air separation screen or a composite powder concentrator; the diameter of the product f1 is less than 0.075mm, the diameter of the product f2 is 0.075-3mm, and the diameter of the product f3 is greater than 3 mm.
The invention has the beneficial effects that:
1. the invention has the advantages of the traditional dry sand making vertical shaft production, and can greatly improve the sand making quantity by combining the roller press, and the sand making quality, fineness modulus and grade are good;
2. compared with the traditional process, the invention has the advantages of low energy consumption, cleanness, environmental protection and greatly improved efficiency.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in the attached figure 1, the dry-process combined production process of the machine-made sand comprises the following steps:
step one, a first crushing procedure:
after the ore crude stone is subjected to primary crushing by primary crushing equipment (preferably one or more of a gyratory crusher, a jaw crusher, a counterattack crusher and a hammer crusher), a product a after the primary crushing is obtained, wherein the diameter of the product a is less than 180 mm.
Step two, a second crushing procedure:
and (3) performing secondary crushing on the product a obtained in the step one by secondary crushing equipment (preferably one or more of a single-cylinder cone crusher, a counterattack crusher and a hammer crusher) to obtain a product b after secondary crushing, wherein the diameter of the product b is less than 50 mm.
Step three, a first screening process:
performing primary screening on the product b obtained in the step two through primary screening equipment (preferably one of a linear screen, a circular vibration screen, a resonance screen and a probability screen, and adopting a double-layer screen structure, wherein the diameter of the upper-layer screen hole is 40-41mm, and the diameter of the lower-layer screen hole is 15-16mm) to obtain products c1, c2 and c3 with sequentially increased diameters; the product c3 can not pass through the upper layer sieve holes, the product c2 can pass through the upper layer sieve holes and can not pass through the lower layer sieve holes, and the product c1 can pass through the upper layer sieve holes and the lower layer sieve holes.
Step four, a circulating procedure:
returning the product c3 obtained in the step three to the step two, and adding the product c3 into the secondary crushing equipment;
step five, a vertical shaft sand making process:
and (3) carrying out vertical shaft crushing on the product c1 obtained in the step three through a vertical shaft sand making machine to obtain a product d1 after the vertical shaft is crushed, wherein the diameter of the product d1 is less than 5 mm.
Step six, a roller press sand making process:
and (4) rolling and crushing the product c2 obtained in the third step through a roller press sand making machine to obtain a rolled and crushed product d2, wherein the diameter of the product d2 is less than 5 mm.
Step seven, a powder removing procedure:
mixing the products d1 and d2 obtained in the fifth step and the sixth step, adding the mixture into a powder concentrator for powder removal to obtain products e1 and e2 after powder removal, wherein the product e1 is stone powder with the diameter of less than 0.075mm, and the product e2 is sand.
Step eight, a second screening process:
performing secondary screening on the product e2 obtained in the step seven through secondary screening equipment (preferably an air screen or a composite powder concentrator) to obtain products f1, f2 and f3 with sequentially increased diameters; the diameter of the product f1 is less than 0.075mm, the diameter of the product f2 is 0.075-3mm, and the diameter of the product f3 is greater than 3 mm.
Step nine, a recycling process:
the product f3 from step eight was returned to step five and added to the vertical shaft apparatus.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has the advantages of the traditional dry-method sand-making vertical shaft production, can greatly improve the sand-making quantity by combining with a roller press, and has good sand-making quality, fineness modulus and grade; two products with the diameter of less than 0.075mm and the diameter of 0.075-3mm can be obtained, reaching the level of fine sand.
2. Compared with the traditional process, the invention has the advantages of low energy consumption, cleanness, environmental protection and greatly improved efficiency.
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 dry-method combined production process of machine-made sand is characterized in that: the method comprises the following steps:
step one, a first crushing procedure:
carrying out primary crushing on the ore crude stone by primary crushing equipment to obtain a product a after the primary crushing;
step two, a second crushing procedure:
performing secondary crushing on the product a obtained in the step one through secondary crushing equipment to obtain a product b after secondary crushing;
step three, a first screening process:
performing primary screening on the product b obtained in the step two through primary screening equipment to obtain products c1, c2 and c3 with sequentially increased diameters;
step four, a circulating procedure:
returning the product c3 obtained in the step three to the step two, and adding the product c3 into the secondary crushing equipment;
step five, a vertical shaft sand making process:
carrying out vertical shaft crushing on the product c1 obtained in the step three through vertical shaft equipment to obtain a vertical shaft crushed product d 1;
step six, a roller press sand making process:
rolling and crushing the product c2 obtained in the step three through rolling equipment to obtain a rolled and crushed product d 2;
step seven, a powder removing procedure:
mixing the products d1 and d2 obtained in the fifth step and the sixth step, and adding the mixture into a powder removing device for powder removal to obtain the products e1 and e2 after powder removal;
step eight, a second screening process:
performing secondary screening on the product e2 obtained in the step seven through secondary screening equipment to obtain products f1, f2 and f3 with sequentially increased diameters;
step nine, a recycling process:
the product f3 from step eight was returned to step five and added to the vertical shaft apparatus.
2. The machine-made sand dry-process combined production process according to claim 1, which is characterized in that: the primary crushing equipment in the step one is one or more of a gyratory crusher, a jaw crusher, a counterattack crusher and a hammer crusher, and the diameter of the product a is less than 180 mm.
3. The machine-made sand dry-process combined production process according to claim 1, which is characterized in that: the secondary crushing equipment in the step two is one or more of a single-cylinder cone crusher, a counterattack crusher and a hammer crusher; the diameter of the product b is less than 50 mm.
4. The machine-made sand dry-process combined production process according to claim 1, which is characterized in that: the primary screening equipment in the third step is of a double-layer screen structure, one of a linear screen, a circular vibration screen, a resonance screen and a probability screen is adopted, the diameter of the upper-layer screen hole of the primary screening equipment is 40-41mm, and the diameter of the lower-layer screen hole of the primary screening equipment is 15-16 mm; the product c3 can not pass through the upper layer sieve holes, the product c2 can pass through the upper layer sieve holes and can not pass through the lower layer sieve holes, and the product c1 can pass through the upper layer sieve holes and the lower layer sieve holes.
5. The machine-made sand dry-process combined production process according to claim 1, which is characterized in that: the vertical shaft equipment in the fifth step is a vertical shaft type sand making machine; the product d1 had a diameter of less than 5 mm.
6. The machine-made sand dry-process combined production process according to claim 1, which is characterized in that: the rolling equipment in the sixth step is a roller press sand making machine; the product d2 had a diameter of less than 5 mm.
7. The machine-made sand dry-process combined production process according to claim 1, which is characterized in that: the powder removing equipment in the step seven is a powder concentrator; the product e1 is stone powder with the diameter of less than 0.075mm, and the product e2 is sand.
8. The machine-made sand dry-process combined production process according to claim 1, which is characterized in that: the secondary screening equipment in the step eight is a wind screening machine or a composite powder concentrator; the diameter of the product f1 is less than 0.075mm, the diameter of the product f2 is 0.075-3mm, and the diameter of the product f3 is greater than 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110995557.3A CN113798036A (en) | 2021-08-27 | 2021-08-27 | Dry-process combined production process for machine-made sand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110995557.3A CN113798036A (en) | 2021-08-27 | 2021-08-27 | Dry-process combined production process for machine-made sand |
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| CN113798036A true CN113798036A (en) | 2021-12-17 |
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| CN202110995557.3A Pending CN113798036A (en) | 2021-08-27 | 2021-08-27 | Dry-process combined production process for machine-made sand |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289158A (en) * | 2021-12-29 | 2022-04-08 | 辽宁隆源砂业有限公司 | Petroleum fracturing propping agent and preparation process thereof |
| CN114471913A (en) * | 2022-02-28 | 2022-05-13 | 长江勘测规划设计研究有限责任公司 | Production method and system of punching sand with controllable stone powder content |
| CN115921067A (en) * | 2022-12-15 | 2023-04-07 | 江西省宏发路桥建筑工程有限公司 | Machine-made sand production system and method |
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| CN102923980A (en) * | 2012-11-08 | 2013-02-13 | 中国长江三峡集团公司 | Method and system for water-power engineering mixing sand making |
| CN109201284A (en) * | 2018-11-02 | 2019-01-15 | 枣庄鑫金山智能机械股份有限公司 | A kind of vertical sand making machine classifying screen vibration feeding device |
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2021
- 2021-08-27 CN CN202110995557.3A patent/CN113798036A/en active Pending
Patent Citations (3)
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| CN102923980A (en) * | 2012-11-08 | 2013-02-13 | 中国长江三峡集团公司 | Method and system for water-power engineering mixing sand making |
| CN109201284A (en) * | 2018-11-02 | 2019-01-15 | 枣庄鑫金山智能机械股份有限公司 | A kind of vertical sand making machine classifying screen vibration feeding device |
| CN112657651A (en) * | 2020-12-25 | 2021-04-16 | 日昌升建筑新材料设计研究院有限公司 | Sand making production process of dry-method roller press |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289158A (en) * | 2021-12-29 | 2022-04-08 | 辽宁隆源砂业有限公司 | Petroleum fracturing propping agent and preparation process thereof |
| CN114471913A (en) * | 2022-02-28 | 2022-05-13 | 长江勘测规划设计研究有限责任公司 | Production method and system of punching sand with controllable stone powder content |
| CN115921067A (en) * | 2022-12-15 | 2023-04-07 | 江西省宏发路桥建筑工程有限公司 | Machine-made sand production system and method |
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Application publication date: 20211217 |