CN212370350U - Preparation system of waste concrete reclaimed sand powder - Google Patents

Preparation system of waste concrete reclaimed sand powder Download PDF

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Publication number
CN212370350U
CN212370350U CN202020749001.7U CN202020749001U CN212370350U CN 212370350 U CN212370350 U CN 212370350U CN 202020749001 U CN202020749001 U CN 202020749001U CN 212370350 U CN212370350 U CN 212370350U
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powder
static
sand powder
chute
classifier
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叶卫东
刘畅
王国庆
张伟丽
熊会军
刘福永
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Hefei Zhongya Building Material Equipment Co ltd
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Hefei Zhongya Building Material Equipment Co ltd
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Abstract

The utility model relates to an abandonment concrete sand powder recycle field, in particular to abandonment concrete regeneration sand powder preparation system has solved the defect of traditional preparation system product. The high-efficiency dynamic and static combined type sand powder classifier comprises a grinding system, a winnowing system, a conveying system, a dust collecting system and a screening system, wherein the winnowing system comprises a V-shaped static powder concentrator and a high-efficiency dynamic and static combined type sand powder classifier, a feed inlet of the V-shaped static powder concentrator is communicated with a first hoister and a tee material separating valve, and a discharge outlet is respectively communicated with a vibrating screen and the high-efficiency dynamic and static combined type sand powder classifier. The conveying system comprises a first lifter, a second lifter, a belt conveyor, a first chute and a second chute, the pretreated waste concrete blocks enter the winnowing system through the belt conveyor, are screened into various products through the screening system, and the thicker materials enter the grinding system for grinding operation.

Description

Preparation system of waste concrete reclaimed sand powder
Technical Field
The utility model relates to an abandonment concrete regeneration field, in particular to abandonment concrete regeneration sand powder preparation system.
Background
With the vigorous development of the construction industry, the demand of building materials in China is increased sharply. In the concrete raw material, the aggregate accounts for about 75 percent of the total weight of the concrete, and the source of the aggregate is mainly mountain-opening stone-taking, and sand and stone are formed by processing, or sand, pebbles and gravels in a river channel are directly dug. Thus, the natural environment is destroyed, and the sustainable development of the construction industry is not facilitated, so that the recycling of concrete is important. In the nineties of the last century, China brings waste concrete regeneration technology into the national important special project, and is dedicated to the research on recycling of aggregates, sand and powder in waste concrete, and although certain achievements are achieved, some problems to be solved urgently are faced.
SUMMERY OF THE UTILITY MODEL
Not enough to current technique, the utility model provides an abandonment concrete regeneration sand powder preparation system.
In order to realize the purpose, the utility model adopts the technical scheme that: the utility model provides a waste concrete regeneration sand preparation system, including grinding system, air separation system, conveying system, dust collecting system, screening system, grinding system comprises vertical mill and high fine ball mill, air separation system includes V type static selection powder machine and high-efficient dynamic and static combination formula sand powder grader, conveying system includes belt conveyor, lifting machine one, lifting machine two, chute one, chute two, dust collecting system comprises cloth bag dust collector one, cloth bag dust collector two, vertical mill, high fine ball mill, lifting machine one, shale shaker, high-efficient dynamic and static combination formula sand powder grader, screening system comprises the shale shaker.
Preferably, the three-way material separating valve is connected with a belt conveyer, an iron remover is arranged on the belt conveyer, a discharge port of the V-shaped static powder concentrator is respectively connected with the high-efficiency dynamic and static combined sand powder classifier and the vibrating screen, a feed port is communicated with the first hoister and the three-way material separating valve, the vent is communicated with the hot blast stove, and hot air at 100-300 ℃ is introduced into the vent.
Preferably, the larger concrete blocks screened by one outlet of the vibrating screen enter the vertical mill for grinding again, and the recycled fine and coarse aggregates (2-5 mm) screened by the other outlet are collected in a finished product warehouse.
Preferably, the feed port of the vertical mill is communicated with the vibrating screen, the discharge port of the vertical mill is communicated with the first elevator, the ground concrete enters the V-shaped static powder concentrator through the first elevator, and the vertical mill, the first elevator, the V-shaped static powder concentrator and the vibrating screen form a closed circulation system together.
Preferably, the high-efficiency dynamic and static combined sand-powder classifier consists of a dynamic and static sand-powder classifier and a cyclone, the dynamic and static sand-powder classifier is connected with a discharge port of the V-shaped static powder concentrator, the cyclone is connected with a chute I, the high-efficiency dynamic and static combined sand-powder classifier and the V-shaped static powder concentrator realize secondary powder separation, fine powder classified by the cyclone is conveyed to a high-fineness ball mill through the chute I to be crushed again, the specific surface area of the fine powder is 300-500 m2/kg, and reclaimed sand screened by the dynamic and static sand-powder classifier is 0.15-2 mm.
Preferably, the first cloth bag dust collector is respectively connected with the vertical mill, the first elevator, the high-efficiency dynamic and static combined type sand powder classifier and the vibrating screen to form a dust collecting system, the lower part of the first cloth bag dust collector is connected with the first chute, and the collected fine powder is conveyed into the high-fineness ball mill through the first chute.
Preferably, the feed inlet of the high-fineness ball mill is respectively connected with the first chute and the first cloth bag dust collector, the discharge outlet of the high-fineness ball mill is respectively connected with the second cloth bag dust collector and the second chute, and the regenerated micro powder (with the specific surface area of 600-800 m) is jointly activated2And/kg) is transported to the top of the micropowder warehouse by a second elevator.
The utility model has the advantages that: the utility model provides an abandonment concrete regeneration sand powder preparation system, this preparation system adopt extrusion, shearing broken mode, and the crazing line that the regeneration granule produced is few, still adopts hot-blast stripping technique, can obtain clear regeneration aggregate, and is minimum with native aggregate physical properties difference, to sum up, the utility model discloses have good result of use, be worth popularizing and applying. The utility model provides a waste concrete regeneration sand powder preparation system has solved the weak point of traditional preparation system effectively, and specific surface area > 600 square meter/kg regeneration miropowder 28 days active index is greater than 75%, and the regeneration sand accounts for the proportion of fine aggregate and is higher than 85% in the regeneration mortar, and compressive strength is greater than 15MPa, and the guarantor is greater than 90%, and regeneration powder, regeneration sand and the total substitution rate of regeneration coarse aggregate are higher than 50%, and compressive strength is greater than 40MPa, have gained good result of use, the utility model discloses superior spreading value has.
Drawings
Fig. 1 is a schematic view of the process system of the present invention.
1. A belt conveyor; 2. a de-ironing separator; 3. a three-way material distributing valve; 4. a V-shaped static powder concentrator; 5. a hot blast stove; 6. vibrating screen; 7. vertical grinding; 8. a first hoister; 9. a high-efficiency dynamic and static combined sand powder classifier; 10. a chute I; 11. a first bag dust collector; 12. a high-fine ball mill; 13. a cloth bag dust collector II; 14. a second chute; 15. a second hoisting machine; a. pretreated waste concreteA block; b. regenerating fine aggregate (2-5 mm); c. reclaimed sand (0.15-2 mm); d. fine powder (specific surface area 300-500 m)2/kg); e. combined activation regeneration micro powder (specific surface area 600-800 m)2/kg)。
Detailed Description
The waste concrete recycled sand powder preparation system shown in fig. 1 comprises a grinding system, a winnowing system, a conveying system, a dust collecting system and a screening system, wherein the grinding system consists of a vertical mill and a high-fineness ball mill, the winnowing system comprises a V-shaped static powder concentrator 4 and a high-efficiency dynamic and static combined sand powder classifier 9, the conveying system comprises a belt conveyor 1, a first elevator 8, a second elevator 15, a first chute 10 and a second chute 14, the dust collecting system consists of a first cloth bag dust collector 11, a second cloth bag dust collector 13, the vertical mill 7, the high-fineness ball mill 12, the first elevator 8, a vibrating screen 6 and the high-efficiency dynamic and static combined sand powder classifier 9, and the screening system consists of the vibrating screen 6.
The three-way material separating valve is connected with a belt conveyer, an iron remover 2 is arranged on the belt conveyer 1, a discharge hole of a V-shaped static powder concentrator 4 is respectively connected with a high-efficiency dynamic and static combined sand powder classifier 9 and a vibrating screen 6, a feed inlet is communicated with a first elevator 8 and the three-way material separating valve 3, a vent is communicated with a hot blast stove 5, and hot air at 100-300 ℃ is introduced into the vent.
And a first 6 outlet of the vibrating screen screens out larger concrete blocks, the larger concrete blocks enter the vertical mill for grinding again, and the regenerated fine and coarse aggregate (2-5 mm) screened by the other outlet is collected in a finished product warehouse.
The vertical mill 7 is characterized in that a feed inlet is communicated with the vibrating screen 6, a discharge outlet of the vertical mill 7 is communicated with a first elevator 8, ground concrete enters the V-shaped static powder concentrator 4 through the first elevator 8, and the vertical mill 7, the first elevator 8, the V-shaped static powder concentrator 4 and the vibrating screen 6 jointly form a closed circulation system.
The high-efficiency dynamic and static combined sand powder classifier 9 consists of a dynamic and static sand powder classifier and a cyclone, the dynamic and static sand powder classifier is connected with a discharge port of the V-shaped static powder concentrator 4, the cyclone is connected with a chute I10, and the high-efficiency dynamic and static combined sand powder classifier is used for classifying the sand powder in the high-efficiency dynamic and static combined sand powderThe classifier 9 and the V-shaped static powder concentrator 4 realize secondary powder concentration, fine powder classified by the cyclone is conveyed to the high-fine ball mill 12 through the chute I10 to be crushed again, and the specific surface area of the fine powder is 300-500 m2And/kg, wherein the reclaimed sand screened by the dynamic and static sand powder classifier is 0.15-2 mm.
The first cloth bag dust collector 11 is respectively connected with the vertical mill 7, the first elevator 8, the high-efficiency dynamic and static combined type sand-powder classifier 9 and the vibrating screen 6 to form a dust collecting system, the lower part of the first cloth bag dust collector 11 is connected with the first chute 10, and the collected fine powder is conveyed into the high-fineness ball mill 12 through the first chute 10.
The feeding port of the high-fine ball mill 12 is respectively connected with the chute I10 and the cloth bag dust collector I11, the discharging port of the high-fine ball mill 12 is respectively connected with the cloth bag dust collector II 13 and the chute II 14, and the regenerated micro powder (with the specific surface area of 600-800 m) is jointly activated2And/kg) is transported to the top of the micropowder warehouse by a second lifting machine 15.
The principle is summarized as follows: the utility model is designed aiming at the defects of the traditional process system, the waste concrete blocks after pretreatment are transported to a V-shaped static powder concentrator 4 through a belt conveyer 1, an iron remover 2 and a three-way material distributing valve 3 in sequence, 100-300 ℃ hot air is sent into a vent in the V-shaped static powder concentrator 4 through a hot-blast stove 5, not only the drying, sorting and conveying functions of the concrete can be realized, but also the mutual separation of aggregate, sand and powder can be realized efficiently in a gravity field and a temperature field, clean concrete recycled aggregate can be obtained, larger concrete blocks are screened through a vibrating screen 6, larger blocks enter a vertical mill 7 to be ground again, small formed recycled fine aggregate (2-5 mm) is collected, the concrete under the extrusion and shearing action of the vertical mill 7 is transported to the V-shaped static powder concentrator 4 through a lifter-8, the V-shaped powder concentrator 4 sorts out finer sand powder to enter a high-efficiency combined type sand classifier 9, the fine powder is collected by the cyclone and transported to the high fine ball mill 12 through the chute one 10. The combined activated regenerated micro powder is obtained by crushing through a high-fine ball mill 12 and is transported to the top of a micro powder warehouse through a second chute 14 and a second elevator 15, and the proportion and specification of the regenerated micro powder and the regenerated sand can be flexibly adjusted according to requirements.
Table 1 shows the comparison between the present invention and the conventional process system:
the effect listed is seen as table 1 and is shown, can know according to table 1, the utility model discloses gain good effect, not only solved the drawback of traditional system preparation sand powder performance, still protected the environment effectively, reached the purpose of design.
The basic principles, main features and advantages of the present invention have been shown and described, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and the simple modification and replacement by those skilled in the art are within the scope of the present invention without departing from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a waste concrete regeneration sand powder preparation system which characterized in that: the high-efficiency dynamic and static combined type sand powder classifying machine comprises a grinding system, a winnowing system, a conveying system, a dust collecting system and a screening system, wherein the grinding system consists of a vertical mill and a high-fine ball mill, the winnowing system comprises a V-shaped static powder concentrator and a high-efficiency dynamic and static combined type sand powder classifier, the conveying system comprises a belt conveyor, a first elevator, a second elevator, a first chute and a second chute, the dust collecting system consists of a first cloth bag dust collector, a second cloth bag dust collector, the vertical mill, the high-fine ball mill, the first elevator, a vibrating screen and the high-efficiency dynamic and static combined type sand powder classifier, and the screening system consists of a vibrating screen.
2. The system for preparing reclaimed sand powder from waste concrete according to claim 1, wherein: a three-way material separating valve is arranged at a material inlet of the V-shaped static powder concentrator, the three-way material separating valve is connected with a belt conveyor, an iron remover is arranged on the belt conveyor, and a material outlet of the V-shaped static powder concentrator is respectively connected with a high-efficiency dynamic and static combined type sand powder classifier and a vibrating screen.
3. The waste concrete reclaimed sand powder preparation system according to claim 2, wherein: and a vent of the V-shaped static powder concentrator is communicated with the hot blast stove, and hot air at the temperature of 100-300 ℃ is introduced into the vent.
4. The system for preparing reclaimed sand powder from waste concrete according to claim 2 or 3, wherein: and the concrete blocks screened by one outlet of the vibrating screen enter the vertical mill for grinding again, and the regenerated fine and coarse aggregate screened by the other outlet is collected in a finished product warehouse.
5. The system for preparing reclaimed sand powder from waste concrete according to claim 4, wherein: the vertical mill feed inlet is communicated with the vibrating screen, the vertical mill discharge outlet is communicated with the first elevator, ground concrete enters the V-shaped static powder concentrator through the first elevator, and the vertical mill, the first elevator, the V-shaped static powder concentrator and the vibrating screen jointly form a closed circulation system.
6. The system for preparing reclaimed sand powder from waste concrete according to claim 5, wherein: the high-efficiency dynamic and static combined type sand powder classifier consists of a dynamic and static sand powder classifier and a cyclone, the dynamic and static sand powder classifier is connected with a discharge port of the V-shaped static powder concentrator, the cyclone is connected with a chute I, the high-efficiency dynamic and static combined type sand powder classifier and the V-shaped static powder concentrator realize secondary powder separation, and fine powder classified by the cyclone is conveyed to a high-fineness ball mill for secondary crushing through the chute I.
7. The system for preparing reclaimed sand powder from waste concrete according to claim 6, wherein: the particle size of the recycled fine and coarse aggregate is 2-5 mm; the specific surface area of the fine powder is 300-500 m2And/kg, wherein the reclaimed sand screened by the dynamic and static sand powder classifier is 0.15-2 mm.
8. The system for preparing reclaimed sand powder from waste concrete according to claim 7, wherein: the first cloth bag dust collector is connected with the vertical mill, the first elevator, the high-efficiency dynamic and static combined sand powder classifier and the vibrating screen to form a dust collecting system, the lower part of the first cloth bag dust collector is connected with the first chute, and the collected fine powder is conveyed into the high-fineness ball mill through the first chute.
9. The system for preparing reclaimed sand powder from waste concrete according to claim 8, wherein: the high-fineness ball mill feed inlet is connected with chute one, cloth bag dust collector one respectively, high-fineness ball mill discharge gate be connected with cloth bag dust collector two, chute two respectively, smash through high-fineness ball mill and obtain jointly activated regeneration miropowder, jointly activated regeneration miropowder transport to the miropowder storehouse top through lifting machine two.
10. The system for preparing reclaimed sand powder from waste concrete according to claim 9, wherein: the specific surface area of the combined activated and regenerated micro powder is 600-800 m2/kg。
CN202020749001.7U 2020-05-08 2020-05-08 Preparation system of waste concrete reclaimed sand powder Active CN212370350U (en)

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CN202020749001.7U CN212370350U (en) 2020-05-08 2020-05-08 Preparation system of waste concrete reclaimed sand powder

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Application Number Priority Date Filing Date Title
CN202020749001.7U CN212370350U (en) 2020-05-08 2020-05-08 Preparation system of waste concrete reclaimed sand powder

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112934378A (en) * 2021-01-28 2021-06-11 天津水泥工业设计研究院有限公司 Preparation system for producing building material products by gradient utilization of hot stuffy steel slag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112934378A (en) * 2021-01-28 2021-06-11 天津水泥工业设计研究院有限公司 Preparation system for producing building material products by gradient utilization of hot stuffy steel slag

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