CN102923980B - Method and system for water-power engineering mixing sand making - Google Patents
Method and system for water-power engineering mixing sand making Download PDFInfo
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Abstract
The invention relates to a method for water-power engineering mixing sand making which includes the following steps: 1) feeding stones in a crushing unit and crushing; 2) screening the stones with the grain under 40mm crushed by the crushing unit in a screening unit; 3) feeding aggregate in a second sand making raw material bin (II) into an impact type crusher and curshing, and feeding the crushed mixture in a vibration screen (16) dehydrating and grading; 4) feeding the aggregate with the grain size of 5-20mm in a first sand making raw material bin in a rod mill and crushing, feeding the crushed sand into a third spiral sand washer (12), then feeding into a product sand bin (20) after dehydrating in a third dehydrating screen (15). The method updates a traditional sand making method and uses the impact crushing machine to serve as main sand making equipment in a sand making process, and the impact type crusher machine, the rod mill, the vibration screen and the like jointly form a mixing sand making method applicable to water-power engineering. The system and the method can achieve high-strength production and meet high-quality requirements, reduce building and installation cost, improve the whole use ratio of the equipment and reduce cost.
Description
Technical field
The present invention relates to the preparation of material of construction.Specifically, the present invention relates to hydroelectric project materials of man-made sand production technical field, relate in particular to the method and system that a kind of hydroelectric project is mixed sand processed.
Background technology
The required sand material amount of large water conservancy hydroelectric engineering concrete production is huge, industrial scale and production intensity are high, the peak production time length is long, the production run of artificial sand building stones processing generation system not only will guarantee that output meets engineering construction needs, also to guarantee that the final product quality that system is produced reaches the required quality standard of engineering construction, thereby guarantee concrete engineering quality.
Domestic Traditional Man sand material method for producing is mainly and adopts rod milling sand machine processed or disc type sand machine processed sand processed separately, but the method often cannot meet high-intensity production, and steel consumes seriously, builds peace expense higher.Since the mid-90 in 20th century, brought into use impact crusher in large-scale hydroelectric project, its production efficiency is high, wears away little.But impact crusher exist produced grain fineness number modulus sandstone bigger than normal, central diameter particle diameter on the low side, various concrete proportionings are required to the shortcomings such as bad adaptability, therefore have a strong impact on concrete quality.
The current domestic novel sand machine processed of vi series impact formula that generally adopts, that its advantage is mainly manifested in is simple and reasonable, running cost is low, wear and tear little, percentage of damage is high, the aspect such as energy-conservation, but also there are a lot of weak points in it, as be subject to the impact of moisture content of material larger, moisture content is few, and dust pollution is more serious; Some equipment noise in work is larger, and in the situation that maintenance condition is poor, its working efficiency obviously reduces, and the scope of application is less, is only suitable for hard, ultrahard material in fragmentation.
Chinese patent CN101708968B discloses a kind of preparation method of machine-made sand fine aggregate, sandstone mixture to particle diameter more than 16mm carries out secondary breaking, screening, by the special fine sand compound use of Machine-made Sand and particle diameter minimum, can produce the machine-made sand fine aggregate with certain fineness modulus, overcome the shortcoming that original sand system processed cannot be controlled fineness modulus, but in the most key producing sand process, still adopt single sand machine processed to process, the high strength that cannot meet hydroelectric project needs is produced, the demand of continuous production.
Therefore for reaching finished product good quality and high output, need to take a series of measure, adopt novel method and other much to guarantee the measure of final product quality, to meet high-intensity production and high-quality requirement.
The information that is disclosed in background parts of the present invention is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply that in any form this information structure has been the known prior art of persons skilled in the art.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of conventional art, provide a kind of hydroelectric project to mix novel method and the system of sand processed, increasing and building under the condition of peace expense not significantly, when ensureing the quality of production of artificial sand, the high strength that improves artificial sand production system is produced, the ability of continuous production.
For solving the problems of the technologies described above, the invention provides a kind of hydroelectric project and mix sand method processed, the method comprises the following steps:
1) building stones are sent into breaking unit and carried out fragmentation;
2) building stones below the particle diameter 40mm after breaking unit fragmentation are sieved in sieve unit, described building stones are divided into the aggregate of particle diameter 5-20mm, the sand that the aggregate of particle diameter 20mm-40mm and particle diameter are less than 5mm, wherein:
I) aggregate of a part of particle diameter 5-20mm is sent into the first sandy plain feed bin processed,
Ii) the aggregate of the aggregate of remaining particle diameter 5-20mm and whole particle diameter 20mm-40mm is sent into the second sandy plain feed bin processed;
Iii) particle diameter sieve unit being tailed over is less than the sand of 5mm and sends into the first screw sand washer cleaning, then sends into finished sand storehouse after the first draining screen dehydration;
3) aggregate in described the second sandy plain feed bin processed is sent into impact crusher fragmentation, and the compound after fragmentation is sent into vibratory screening apparatus dehydration classification, wherein:
I) the above aggregate of particle diameter 20mm is sent into described the second sandy plain feed bin processed,
Ii) the aggregate of particle diameter 5-20mm is sent into described the first sandy plain feed bin processed,
Iii) the sand that particle diameter is less than to 5mm is sent into the second screw sand washer, then sends into described finished sand storehouse after the second draining screen dehydration;
4) aggregate of the particle diameter 5-20mm in the first sandy plain feed bin processed is sent into rod mill fragmentation, the sand after fragmentation is sent into triple helical sand washer, then sends into finished sand storehouse after the 3rd draining screen dehydration.
In a specific embodiments, the method is further included in step 2), 3), 4) resulting sand sends into before described finished bin and mixes.
In another embodiment, described hydroelectric project is mixed sand method processed and according to following weight percent, is compared the resulting sand of each step and mix: the resulting sand 35%-45% of step 3), the resulting sand 20%-30% of step 4), step 2) sand 20%-30%, thereby the artificial sand that formation fineness modulus is 2.5 ± 0.2.
In another embodiment, described hydroelectric project mixing sand method processed is dewatered water-containing rate to 12%-15% by 20%-25% respectively in first, second, and third draining screen.
The present invention also provides a kind of hydroelectric project to mix sand system processed, and this system comprises:
Screening module, the broken module of rod mill, impact grinding crusher machine module and finished bin, wherein:
Described screening module comprises: sieve unit, first, second, and third transport unit, the first screw sand washer and the first draining screen, the outlet of wherein said sieve unit is connected with the entrance of first, second, and third transport unit respectively, and the outlet of described the first transport unit is connected with the first draining screen successively with the first screw sand washer;
The broken module of described rod mill comprises: the first sandy plain feed bin processed, the 4th transport unit, rod mill, triple helical sand washer and the 3rd draining screen that connect successively;
Described impact grinding crusher machine module comprises: the second sandy plain feed bin processed, the 5th transmission mechanism, impact crusher, the 6th transmission mechanism, vibratory screening apparatus, the second screw sand washer and the second draining screen that connect successively; Wherein
The outlet of the second transmission mechanism is connected with the entrance of described the second sandy plain feed bin processed, and the outlet of the 3rd transmission mechanism is connected with the entrance of described the first sandy plain feed bin processed,
The outlet of described vibratory screening apparatus is also connected with described the 3rd transmission mechanism with described the second transmission mechanism respectively,
The outlet of the first draining screen is connected with the entrance of the 8th transmission mechanism, and the outlet of second, third draining screen is all connected with the entrance of the 7th transmission mechanism, and outlet described the 7th, the 8th transmission mechanism is connected with described finished bin.
In a specific embodiments, this system also comprises breaking unit, and this breaking unit is arranged on the upstream of described screening module, building stones are carried out to send into described sieve unit after fragmentation.
In another embodiment, in described hydroelectric project, mix in sand system processed, at least one in the first, second, third, fourth, the 5th, the 6th, the 7th and the 8th transport unit is conveyor drive.
In another embodiment, at described vibratory screening apparatus, be provided with chute respectively and between described the second transmission mechanism and/or described the 3rd transmission mechanism.
In another embodiment, between described the 3rd draining screen and described the 7th transmission mechanism, be provided with additional transport unit.
In another embodiment, described impact crusher adopts Barmac9000 crusher.
The sand that the adjusting of finished sand is mainly made by rod mill regulates sand that Barmac9000 crusher makes and the aggregate chips of screen house, and according to output, fineness modulus size, equipment (number of units) output just waits and carries out system in combination.
The invention has the beneficial effects as follows: the present invention is simple in structure, easy to operate, build peace expense low, can meet the requirement to artificial sand fineness modulus of high-intensity production and large hydraulic engineering, whole utilising efficiency is high.
Method and apparatus of the present invention has other characteristic and advantage, these characteristics and advantage will be apparent from the accompanying drawing that is incorporated herein and embodiment subsequently, or will in the accompanying drawing being incorporated herein and embodiment subsequently, state in detail, these the drawings and specific embodiments are jointly for explaining certain principles of the present invention.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is according to the schematic diagram of sand system processed of the present invention.
Description of reference numerals:
1～9 conveyor drive
10 screen houses
11 rod mills
12,13,14 screw sand washers
15～18 vibratory screening apparatuss
19 impact crushers
20 finished sand storehouses
I～II sandy plain feed bin processed.
Embodiment
With detailed reference to each specific embodiments of the present invention, the example of these specific embodiments is shown in the accompanying drawings and is described below below.Although the present invention will combine and be described with particular exemplary embodiments, be to be understood that this specification sheets is not intended to limit the invention to those particular exemplary embodiments.On the contrary, the present invention is intended to not only cover these particular exemplary embodiments, and covering can be included in various selection forms, modification, the equivalent form of value and other specific embodiments within the spirit and scope of the present invention that limited by claims.
In one aspect of the invention, in a specific embodiments, the invention provides a kind of hydroelectric project and mix sand system processed, its structure is referring to Fig. 1, and hydroelectric project of the present invention is mixed sand system processed and comprised:
Screening module, the broken module of rod mill, impact grinding crusher machine module and finished bin 20, wherein,
Screening module comprises: screen house 10, conveyor drive 8,5,4, the first screw sand washer 14 and the first draining screen 18, wherein the outlet of screen house 10 is connected with the entrance of conveyor drive 8,5,4 respectively, and the outlet of conveyor drive 8 is connected with the first draining screen 18 successively with the first screw sand washer 14.
The broken module of rod mill comprises: the sandy plain feed bin I processed, conveyor drive 1, rod mill 11, triple helical sand washer 12 and the 3rd draining screen 15 that connect successively.
Impact grinding crusher machine module comprises: the sandy plain feed bin II processed, conveyor drive 2, impact crusher 19, conveyor drive 3, vibratory screening apparatus 16, the second screw sand washer 13 and the second draining screen 17 that connect successively.
Wherein, the outlet of conveyor drive 4 is connected with the entrance of sandy plain feed bin II processed, the outlet of conveyor drive 5 is connected with the entrance of sandy plain feed bin I processed, the aggregate that just screen house 10 can be sieved in this case, or sand are sent to sandy plain feed bin I processed, sandy plain feed bin II processed and the first screw sand washer 14 by conveyor drive 5,4,8 respectively according to different size and process.
As mentioned above, vibratory screening apparatus 16 is connected with the second screw sand washer 13, i.e. the outlet of vibratory screening apparatus 16 is connected with the second screw sand washer 13, makes a part of aggregate in vibratory screening apparatus 16 or sand enter into the second screw sand washer 13 and cleans; Simultaneously, the outlet of vibratory screening apparatus 16 is also connected with conveyor drive 5 with conveyor drive 4 respectively, in this case, just the aggregate after vibratory screening apparatus 16 classifications dehydration can be sent to sandy plain feed bin I processed, sandy plain feed bin II processed by conveyor drive 5,4 respectively according to different-grain diameter size and carry out respectively fragmentation again.
The outlet of the first draining screen is connected with the entrance of conveyor drive 9, the outlet of second, third draining screen 17,15 is all connected with the entrance of conveyor drive 6, the outlet of conveyor drive 9,6 is connected with finished bin 20, like this, by the sand after the first draining screen 18 dehydrations, can be sent to finished sand storehouse by conveyor drive 9, the sand after second, third draining screen 17,15 dehydrations can be sent to finished sand storehouse by conveyor drive 6.
For convenient, transmit, as selecting, can also between above-mentioned any two interconnective devices, chute be set, so that the transmission of building stones for example, can arrange chute between vibratory screening apparatus 16 and conveyor drive 5,4.
Because hydroelectric project mixing sand system processed is huge, for the ease of transmitting, alternatively in can also additional conveyor drive being set as required so that the transmission of building stones between any two interconnective devices, for example, in Fig. 1, between the 3rd draining screen 15 and conveyor drive 6, be also provided with conveyor drive 7.
Certainly, conveyor drive also can be selected any other transport unit that can transmit sandstone, such as conveyor, dump truck etc.
In another embodiment, hydroelectric project mix the structure of sand system processed and mode of connection basic with above-described system class seemingly, still, impact crusher 19 adopts the Barmac9000 crusher of Liao You SVEDALA companies production.
(1) fineness of sand processed that can understand Barmac9000 crusher according to table 1 below and table 2:
The blending ratio of equipment yield and charging and size relation:
(a) charging adopts the compound of particle diameter 5-40mm, and the grain size statistics after fragmentation is in Table 1;
(b) charging adopts the compound of particle diameter 5-80mm, and the grain size statistics after fragmentation is in Table 2:
Table 1: grain size statistics after the fragmentation of particle diameter 5-40mm compound
| Particle diameter (mm) | <5 | 5-20 | 20-40 |
| Ratio (%) | 40.25 | 38.25 | 21.5 |
Table 2: grain size statistics after the fragmentation of particle diameter 5-80mm compound
| Particle diameter (mm) | <5 | 5-20 | 20-40 |
| Ratio (%) | 31.3 | 43.5 | 25.2 |
Note: remove the content of the particle diameter <5mm existing in charging, become sand coarse aggregate ratio approximately 35%.
(2) by table 3, can understand Barmac9000 crusher, screen house, the granularity of rod milling Machine-made Sand and the fineness modulus of sand processed (in table 3, being expressed as F.M.).
(a) granularity of sand processed is in Table 3
Table 3: the granularity of sand processed
| Particle diameter (mm) | <0.16 | 0.16-0.315 | 0.315-0.63 | 0.63-1.25 | 1.25-2.5 | 2.5-5 | 5-10 | F.M. |
| Rod mill (%) | 13.26 | 12.32 | 26.27 | 27.56 | 10.15 | 9.30 | 1.14 | 2.37 |
| Screen house (%) | 5.22 | 8.47 | 18.56 | 18.65 | 11.55 | 26.02 | 11.53 | 3.14 |
| Barmac（%） | 8.30 | 9.04 | 21.28 | 21.90 | 12.71 | 21.10 | 5.40 | 2.89 |
(b) Barmac9000 grain fineness number modulus processed is substantially between 2.7-2.9, and separate unit output reaches 80t/h left and right; After regulating feed size, feed rate, fineness modulus, can reach 2.5-2.7.
Through experiment, more than the throughput of above-mentioned sand system processed can reach 165t/h, through regulating feed size, feed rate, fineness modulus can reach 2.5-2.7, can guarantee that engineering is required.
In another aspect of the present invention, provide a kind of hydroelectric project to mix sand method processed.
Referring to Fig. 1, wherein the arrow in Fig. 1 represents the transporting direction of material in the course of processing.
Impact crusher adopts the Barmac9000 crusher of being produced by SVEDALA company.
Building stones are sent into crushing plant and carry out fragmentation, building stones form the sandy plain material processed below particle diameter 40mm after fragmentation, and this sandy plain material processed is transported to screen house 10.
Sandy plain material processed below particle diameter 40mm is divided into the aggregate of particle diameter 5-20mm, aggregate chips or the sand that the aggregate of particle diameter 20mm-40mm and particle diameter are less than 5mm at screen house 10.The aggregate of the aggregate of a part of particle diameter 5-20mm and a part of particle diameter 20mm-40mm is sent into respectively to sandy plain feed bin I processed and sandy plain feed bin II processed by conveyor drive 5,4; The particle diameter that screen house 10 is tailed over is less than the aggregate chips of 5mm and sends into the first screw sand washer 14 washed-out sands, then dewaters to 12%-15% to send into finished sand storehouse 20 by conveyor drive 9 through the first draining screen 18.
Sandy plain feed bin I processed is mainly stored the aggregate of a part of particle diameter 5-20mm, for rod mill 11 sand processed, to improve the sand amount of producing, reduces steel consumption.
First sandy plain feed bin II processed stores the aggregate of a part of particle diameter 20mm-40mm.Aggregate shortage in system is produced due to 20mm-40mm, for fear of crusher, dally, consider the production cost of rubble, the compound of the aggregate of remaining the particle diameter 20-40mm in screen house 10 and 5-20mm need to be sent into sandy plain feed bin II storage processed by conveyor drive 4 and use for Barmac9000 crusher 19.
In sandy plain feed bin I processed, the aggregate of particle diameter 5-20mm is sent into the broken sand processed of rod mill 11 by conveyor drive 1, then through triple helical sand washer 12, clean, then enter the 3rd draining screen 15 dehydrations, water-containing rate is dewatered and entered conveyor drive 7,6 to 12%-15% by 20%-25%, finally enters finished sand storehouse 20.
In sandy plain feed bin II processed, the aggregate of particle diameter 5-40mm is sent into Barmac9000 crusher 19 by conveyor drive 2, blended stock after fragmentation is sent into vibratory screening apparatus 16 through conveyor drive 3 and is dewatered and classification, and the aggregate of particle diameter 20-40mm enters conveyor drive 4 by chute and sends into sandy plain feed bin II processed; The aggregate of particle diameter 5-20mm enters conveyor drive 5 by chute and sends into sandy plain feed bin I processed; The sand that particle diameter is less than 5mm enters the second screw sand washer 13 cleanings, through the second draining screen 17 dehydrations, to sending into conveyor drive 6 below 15%, after the sand that the sand of making and screen house tail over mixes, enters finished sand storehouse 20 with rod mill 11 again.
Preferably, the sand that finished sand is obtained by above three kinds of methods is by weight percentage: the ratio of the sand 35%-45% making with Barmac9000 crusher, the sand 20%-30% that rod mill is made, aggregate chips 20%-30% that screen house tails over is mixed, the fineness modulus of the artificial sand forming is 2.5 soil 0.2, content of stone powder 10%-13%, can engineering demands.
According to sand method processed of the present invention, the sand that the adjusting of finished sand is mainly made by rod mill regulates sand that Barmac9000 crusher makes and the aggregate chips of screen house, according to output, fineness modulus size, equipment (number of units) output just waits and carries out system in combination.
The present invention has improved traditional sand method processed, adds impact crusher as main sand equipment processed in sand flow journey processed, and together with rod mill, vibratory screening apparatus, conveyor drive, forms a kind of mixing sand method processed of suitable water electrical engineering.The method can meet high-intensity production and high-quality requirement, and can reduce the peace expense of building, and improves Whole Equipment utilization ratio, reduces costs.
Through experiment, adopted above-mentioned sand system and method processed, more than throughput can reach 165t/h, through regulating feed size, feed rate, fineness modulus can reach 2.5-2.7, can guarantee that engineering is required.
The aforementioned description to concrete exemplary of the present invention is for the object with illustration is described.Limit the present invention is not thought in these descriptions, or the present invention is defined as to disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.Exemplary embodiment is selected and the object described is to explain certain principles of the present invention and practical application thereof, thereby made others skilled in the art can realize and utilize various exemplary of the present invention and various selection and change.Scope of the present invention is intended to be limited by appending claims and equivalents thereof.
Claims (4)
1. hydroelectric project is mixed a sand method processed, and the method comprises the following steps:
1) building stones are sent into breaking unit and carried out fragmentation;
2) building stones below the particle diameter 40mm after breaking unit fragmentation are sieved in sieve unit, described building stones are divided into the aggregate of particle diameter 5-20mm, the sand that the aggregate of particle diameter 20mm-40mm and particle diameter are less than 5mm, wherein:
I) aggregate of a part of particle diameter 5-20mm is sent into the first sandy plain feed bin processed (I);
Ii) the aggregate of the aggregate of remaining particle diameter 5-20mm and whole particle diameter 20mm-40mm is sent into the second sandy plain feed bin processed (II);
Iii) particle diameter sieve unit being tailed over is less than the sand of 5mm and sends into the first screw sand washer (14) cleaning, then sends into finished sand storehouse (20) after the first draining screen (18) dehydration;
3) aggregate in described the second sandy plain feed bin processed (II) is sent into impact crusher fragmentation, and the compound after fragmentation is sent into vibratory screening apparatus (16) dehydration classification, wherein:
I) the above aggregate of particle diameter 20mm is sent into described the second sandy plain feed bin processed (II);
Ii) the aggregate of particle diameter 5-20mm is sent into described the first sandy plain feed bin processed (I);
Iii) the sand that particle diameter is less than to 5mm is sent into the second screw sand washer (13), then sends into described finished sand storehouse (20) after the second draining screen (17) dehydration;
4) aggregate of the particle diameter 5-20mm in the first sandy plain feed bin processed (I) is sent into rod mill fragmentation, the sand after fragmentation is sent into triple helical sand washer (12), then sends into finished sand storehouse (20) after the 3rd draining screen (15) dehydration.
2. hydroelectric project according to claim 1 is mixed sand method processed, and the method is further included in step 2), 3), 4) resulting sand sends into described finished sand storehouse (20) and mixes before.
3. hydroelectric project according to claim 2 is mixed sand method processed, according to following weight percent, comparing the resulting sand of each step mixes: step 2) resulting sand 20%-30%, the resulting sand 35%-45% of step 3), the resulting sand 20%-30% of step 4), thus form the artificial sand that fineness modulus is 2.5 ± 0.2.
4. according to the hydroelectric project described in any one in claims 1 to 3, mix sand method processed, in first, second, and third draining screen, respectively water-containing rate is dewatered to 12%-15% by 20%-25%.
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| CN103949319B (en) * | 2014-04-29 | 2016-05-04 | 中国葛洲坝集团第五工程有限公司 | A kind of crushed gravel system of processing and processing method |
| CN104058620A (en) * | 2014-06-05 | 2014-09-24 | 宜昌市石金科技发展有限责任公司 | Method and device for producing building sand by using Magangsha |
| CN107297265A (en) * | 2017-08-07 | 2017-10-27 | 尹国祥 | A kind of vanadium titano-magnetite technology for making sand |
| CN112044736A (en) * | 2020-08-12 | 2020-12-08 | 中国水利水电建设工程咨询北京有限公司 | Device for controlling content of artificial sandstone powder |
| CN112090941B (en) * | 2020-09-25 | 2023-11-03 | 瑞图明盛环保建材(昌江)有限公司 | General tailing comprehensive treatment production line and system |
| CN112676026A (en) * | 2020-12-22 | 2021-04-20 | 中国水利水电第九工程局有限公司 | Dry-breaking wet-screening sand making process |
| 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 |
| CN112619854A (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 production process of flexible high-end machine-made sandstone |
| CN113798036A (en) * | 2021-08-27 | 2021-12-17 | 库尔勒日昌升新材料有限公司 | Dry-process combined production process for machine-made sand |
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| CN1648094A (en) * | 2004-12-08 | 2005-08-03 | 中国水利水电第九工程局 | Process for semidry producing sand of artificial sand and stone system |
| CN101708968B (en) * | 2009-09-24 | 2012-07-18 | 重庆建工第三建设有限责任公司 | Preparation method of machine-made sand fine aggregate |
| CN101922236B (en) * | 2010-07-21 | 2014-03-05 | 中铁二十局集团第四工程有限公司 | C50 machine-made sand ultra-high pump concrete construction method |
| CN202912857U (en) * | 2012-11-08 | 2013-05-01 | 中国长江三峡集团公司 | Mixing sand-making system for water-power engineering |
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