CN104889047B - Sand making system using high-frequency sieve under strong wind conditions and method of sand making system - Google Patents
Sand making system using high-frequency sieve under strong wind conditions and method of sand making system Download PDFInfo
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- CN104889047B CN104889047B CN201410516118.XA CN201410516118A CN104889047B CN 104889047 B CN104889047 B CN 104889047B CN 201410516118 A CN201410516118 A CN 201410516118A CN 104889047 B CN104889047 B CN 104889047B
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- sand
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- sewage
- sand making
- sieve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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Abstract
The invention provides a sand making system using a high-frequency sieve under strong wind conditions. The sand making system comprises a dewatering sieve, a sand dust recovery station, a water tank, a slurry processing device, a finished product collecting device, a pisolite sieve, a fast sand dust separator and a sewage processing device. A sand making method for the sand making system adopts the following steps that: (1) stone dust features of stone used by rough material sources are analyzed; (2) the water spraying intensity and the specific installing position of a spraying pipe are determined; (3) the overflowing opening height of the fast sand dust separator is adjusted; (4) the hole diameter of a sieve net of the high-frequency sieve and the sewage discharging quantity of the slurry processing device are regulated; and (5) equipment is started for sand making. The sand making system and the sand making method have the advantages that through the modes of high-frequency sieve spraying, precipitation sand collection and overflow dust removal, the problem of conflict between dust extinguishing and screening percentage can be effectively solved; the dust-free production is realized; the operation environment is improved; and the occupational health harm caused by dust is avoided.
Description
Technical field
The invention belongs to building stones sand field and in particular under a kind of high wind conditions use high-frequency screen sand system processed and its
Method.
Background technology
The sand system aspects processed of high-frequency screen are used, for solving " airborne dust " problem, in system under the high wind conditions of prior art
In easily produce " airborne dust " place increased shower, can effectively suppress " airborne dust " after spray, but spray flux easily produces greatly
New problem, shower water is little cannot effectively to suppress " airborne dust ".
Rainy season woollen, semi-finished product material water-cut variation are big, and screening plant is difficult to be adjusted according to moisture content, leads to finished product
Gravelstone, chiltern amount are unstable.
Below 2.5mm granule can be taken away while spiral classifier shedding, cause the quality of fine grained loss impact sand
Also add the workload of sewage disposal, performance driving economy is poor simultaneously.
Technology for making sand priority experienced " full-dry method ", " Whote-wet method " " semidry method " three kinds of transformations, its sand technology processed both at home and abroad
Transformation, rely primarily on sand equipment processed and improve and carry out process optimization, the domestic at present situation being in three kinds of techniques and depositing, industry
Interior manufacturing enterprise is innumerable, and its technical capability is also very different.Its technology status is as follows:
Full-dry method: small-sized sand material field principally falls into this engineering method and produces at present, the finished sand produced cannot meet at all
Code requirement.Large-scale sandstone enterprise also attempt plus " wind-force shedding " full-dry method technology for making sand research, but due to selecting powder
Confidential ask flour sand moisture content to be less than 1%, and sandstone stock ground, by woollen, semi-finished product supplied materials humidity system, is difficult to meet this requirement, and
And dry production cannot be carried out spray and goes out dirt it is therefore desirable to increase the requirement that many set dust arresters can meet control " airborne dust ",
Put into high, dedusting, select powder equipment power big, high energy consumption, operating cost is high.Exactly because these bottleneck problems, full-dry method is current
Only exist in experimental stage.
Whote-wet method: this engineering method is traditional water conservancy project technology for making sand, this engineering method is mainly characterized by after sand making machine sand sieve out divides
Fully enter spiral classifier and carry out shedding, the grain fineness number modulus that spiral classifier comes out are thicker, therefore typically only by less than 3
Grade carries out shedding, and this section of 3-5 needs entrance rod mill to carry out rod milling.Then both ginsengs obtain qualified sand after joining.Should
The main following points of problem that engineering method is primarily present:
Rod mill high energy consumption, steel consumption are high, maintenance amount is big.The rod mill of one 160kw does not have a hour disposal ability
For 20t about, that is, processing 1t needs the 6-8 degree electricity that consumes energy.Rod mill relies primarily on iron staff frosted and processes finished sand when producing, through surveying
Calculate process quartz sand per ton consumption manganese steel amount about one machine-team of 0.5kg. rod mill operation all lining-plate bolts must be carried out tightly
Gu, maintain the high high labor intensive of frequency.
Not only rinse out the powder of below part 0.16mm in spiral classifier flushing process, also wash away part simultaneously
The sand of 0.16-2.5, the consume of wet method sand is up to 30-40%, increases and increases sewage load while operating cost.
, by the link adjustment modulus of fineness such as adjustment rod mill treating capacity, water inlet, adjustment link is many, difficulty in computation for wet method sand
Greatly, sand quality fluctuation is big.
Semidry method: this engineering method is the one of tradition sand processed to reform greatly, its main technological features be " front dry after wet, ground with broken generation,
Break few mill more ", this engineering method is extremely successful in the low rock of production this kind of broken powder content of limestone, and its birth subtracts in energy-conservation
Row, environmental protection aspect are made that outstanding contribution.But this engineering method is producing quartzite, is spending in this kind of production process of guiding principle rock and necessarily produce
During raw a large amount of stone powder rock, due to the needs of shedding, need for the sand of 30-60% to carry out screw machine shedding just inevitable real estate
Give birth to following problem:
1st, " semidry method " produces during sand it is desirable to enter screw sand washer shedding, therefore can only carry out " dry broken dry screen ".Work as chance
To the rainy day or when above water spray is larger, emery dust easily causes sand sieve hole plug because moisture content is high, crusher chamber plug-hole, point
Material chute sub-material ratio change.Occur during this kind of event, gently then to cause grain fineness number modulus decline, content of stone powder to increase, the inferior footpath of gravelstone
Exceeded. heavy then cause completely to stop production.
2nd, the problem that spiral classifier washed-out sand produces is basically identical with wet production, and its difference is only that point amount of washing is less, sand
Number of dropouts is relatively fewer, but still can produce the loss of 15%-20%.
3rd, " semidry method " requirement " dry broken dry screen ", airborne dust problem is an obstinate disease it is difficult to effect a radical cure, in the ring of calm or few wind
Produce less problematic in border, but the so windy region of Huang Jinping Hydropower Station build sandstone system produce when produce airborne dust similar to
" sand dust is sudden and violent ", when system produces, visibility cannot meet observation and maintenance requires, and such system failure rate is inevitable very high, effectively transports
The row time shortens.
Content of the invention
For solve above-mentioned technical problem, the invention provides under a kind of high wind conditions use high-frequency screen sand system processed and its
Method, under this high wind conditions with high-frequency screen sand system and method processed by " high-frequency screen spray, precipitation are received sand, overflow and gone
The mode of powder ", can effectively solve the problem that the contradiction of " go out dirt " and " sieving saturating rate ", realizes " dustless " metaplasia and produces, improves running environment, keeps away
Exempt from the occupational health hazards that dust brings, realize during sandstone system operation, carrying out " accessible " maintenance, when improving effectively operation
Between.
The present invention is achieved by the following technical programs.
The present invention provide a kind of high wind conditions under with high-frequency screen sand system processed, including dewatering screen, emery dust recycle bin,
Water tank, mud conditioning device, finished product collection device, peastone sieve, emery dust quick disconnector, sewage-treatment plant；Described emery dust is returned
Receive the pipeline connection successively of station, water tank, mud conditioning device, sewage-treatment plant, mud conditioning device and finished product collection device it
Between be provided with sealing-tape machine；Described dewatering screen is arranged on the feed entrance point of emery dust recycle bin；Described peastone sieve setting emery dust is quickly divided
Gating location from device；Pipeline connects water tank and sewage-treatment plant to described emery dust quick disconnector simultaneously；Described emery dust is fast
Fast separator overfall is Height Adjustable, and overfall connects to sewage-treatment plant；The top setting of described mud conditioning device
There is high-frequency screen；At least it is provided with spray near any one in described dewatering screen, mud conditioning device, high-frequency screen or peastone sieve
Pipe, the concrete installation site of shower and the size of shower water are so that airborne dust is just suppressed is defined.
Sealing-tape machine between described mud conditioning device and finished product collection device is b32 sealing-tape machine.
Described mud conditioning device is black whirlwind processing meanss.
Use the sand system processed sand method processed used of high-frequency screen under this high wind conditions, take following steps:
1. the stone powder characteristic of building stones used by analysis woollen material source, and thereby determine that lectotype selection；
2. according to stone powder airborne dust characteristic, determine the concrete installation site of described shower and the size of shower water, make spray
The water yield is as little as possible under the premise of airborne dust is just repressed；
3. the overfall sewage of described emery dust quick disconnector, the sewage of described mud conditioning device is taken to mix in blowdown ratio
Blowdown proportion is measured, the blowdown according to mensure is than the overflow open height of reconditioning described emery dust quick disconnector after conjunction；
4. the water amount of blowdown of described mud conditioning device and the aperture of high-frequency screen screen cloth are adjusted；
5. equipment of opening carries out sand processed.
The present invention is applied to granite sand.
The present invention is applied to sand processed under high wind conditions.
The beneficial effects of the present invention is:
1. " spray go out dirt, full wet sieving " is possible to the contradiction of effectively solving " go out dirt " and " sieving saturating rate ", realizes " dustless "
Metaplasia is produced, and improves running environment, avoids the occupational health hazards that dust brings, realizes can carrying out during sandstone system operation " no hindering
Hinder " maintenance, improves effective run time；
2. by " precipitation is received sand, overflow and removed powder ", go powder amount can by adjust overflow open height or energy dissipator parameter Lai
Realize, thus realizing the quantization regulation and control of content of stone powder, modulus of fineness it is ensured that finished sand quality.After this difficult point overcomes, will be completely real
Existing " with broken generation mill ", superseded high energy consumption, the rod mill of high pollution, and sandstone produces waste strength, reduces solids manufacture rubbish
Discharge, reduces and reduces environmental pollution while processing cost；
Brief description
Fig. 1 is the connection diagram of the present invention；
In figure: 1- dewatering screen, 2- emery dust recycle bin, 3- water tank, 4- mud conditioning device, 5- finished product collection device, 6- bean
Stone sieves, 7- emery dust quick disconnector, 8- sewage-treatment plant.
Specific embodiment
Technical scheme be described further below, but claimed scope be not limited to described.
Project management department of company Sha Chang build valley air port in, and system operation airborne dust is serious, low visibility during operation, causes to run
Do not observe position, and cannot realize carrying out local overhauling while production run.Therefore the system overhaul time is long, relative motion
Time short it is difficult to ensure aggregate supply.
Thus through the effort of a large amount of developers, design under a kind of high wind conditions as shown in Figure 1 with high-frequency screen
Sand system processed, including dewatering screen 1, emery dust recycle bin 2, water tank 3, mud conditioning device 4, finished product collection device 5, peastone sieve 6, sand
Powder quick disconnector 7, sewage-treatment plant 8；Described emery dust recycle bin 2, water tank 3, mud conditioning device 4, sewage-treatment plant 8
Pipeline connects successively, is provided with sealing-tape machine between mud conditioning device 4 and finished product collection device 5；Described dewatering screen 1 is arranged on sand
The feed entrance point of powder recycle bin 2；The gating location of described peastone sieve 6 setting emery dust quick disconnector 7；Described emery dust is quickly divided
From device 7, pipeline connects water tank 3 and sewage-treatment plant 8 simultaneously；Described emery dust quick disconnector 7 overfall is Height Adjustable, overflows
Head piece connects to sewage-treatment plant 8；The top of described mud conditioning device 4 is provided with high-frequency screen；Described dewatering screen 1, mud
At least it is provided with shower, the concrete installation site of shower near any one in processing meanss 4, high-frequency screen or peastone sieve 6
With the size of shower water so that airborne dust is just suppressed is defined.
Sealing-tape machine between described mud conditioning device 4 and finished product collection device 5 is b32 sealing-tape machine.
Described mud conditioning device is black whirlwind processing meanss.
Use the sand system processed sand method processed used of high-frequency screen under this high wind conditions, take following steps:
1. the stone powder characteristic of building stones used by analysis woollen material source, and thereby determine that lectotype selection；
2. carry out screening effect contrast test by different shower installation sites, determine optimal shower installation site；
By detecting with gravelstone outlet to later material, its index is judged, according to metrics evaluation, finally determine described spray
The concrete installation site of pipe and the size of shower water, make water spray as little as possible under the premise of airborne dust is just repressed；
3. overflow regulation and control plate is placed in middle part, after normally running half an hour, takes described emery dust quick disconnector 7 respectively
Overfall sewage, the sewage of described mud conditioning device 4 measure blowdown proportion in after the mixing of blowdown ratio, according to the blowdown measuring
Overflow open height than reconditioning described emery dust quick disconnector 7；
4. it is unsatisfactory for code requirement as the finished sand of production department after regulating and controlling by overflow has quality, or its operational mode is not
Daylight saving time, then adjust the water amount of blowdown of described mud conditioning device 4 and the aperture of high-frequency screen screen cloth, thus the most always adjusting finished sand
Modulus of fineness；
5. equipment of opening carries out sand processed.
The present invention is applied to granite sand.
The present invention is applied to sand processed under high wind conditions.
After testing, sealing-tape machine is generally the flour sand of below 2.5mm grade with feed back, and wherein powder content is 32%-
51%, if this part material is reclaimed participating in finished sand after simultaneously shedding, effective finished sand that adjusts being read in detail modulus, solves band simultaneously
The pollution problem to system place for the feed back, mitigates and produces refuse sweeping workload.
Certain project management department of company produces about 900,000 tons of sandstone aggregate within 2013, in the case of the present invention, often reduces by 1 degree
Electricity/t, can save energy 900,000 kw every year, is equivalent to 110,000 tons of standard coals, and " semidry method " produces sandstone aggregate and consume for 10% about,
If the loss of one percentage point can be reduced, blowdown 10,000 t will be reduced.
Claims (6)
1. under a kind of high wind conditions use high-frequency screen sand system processed, including dewatering screen (1), emery dust recycle bin (2), water tank (3),
Mud conditioning device (4), finished product collection device (5), peastone sieve (6), emery dust quick disconnector (7), sewage-treatment plant (8),
It is characterized in that: described emery dust recycle bin (2), water tank (3), mud conditioning device (4), sewage-treatment plant (8) pipeline successively
Connect, between mud conditioning device (4) and finished product collection device (5), be provided with sealing-tape machine；Described dewatering screen (1) is arranged on emery dust
The feed entrance point of recycle bin (2)；Described peastone sieve (6) arranges the gating location of emery dust quick disconnector (7)；Described emery dust is fast
Pipeline connects water tank (3) and sewage-treatment plant (8) to fast separator (7) simultaneously；Described emery dust quick disconnector (7) overfall is high
Degree scalable, overfall connects to sewage-treatment plant (8)；The top of described mud conditioning device (4) is provided with high-frequency screen；Institute
State in dewatering screen (1), mud conditioning device (4), high-frequency screen or peastone sieve (6) and be at least provided with shower near any one,
The size of the concrete installation site of shower and shower water is so that airborne dust is just suppressed is defined.
2. under high wind conditions as claimed in claim 1 use high-frequency screen sand system processed it is characterised in that: described mud conditioning
Sealing-tape machine between device (4) and finished product collection device (5) is b32 sealing-tape machine.
3. under high wind conditions as claimed in claim 1 use high-frequency screen sand system processed it is characterised in that: described mud conditioning
Device is black whirlwind processing meanss.
4. under high wind conditions as claimed in claim 1 use high-frequency screen sand system processed it is characterised in that: be applied to granite
Sand processed.
5. under high wind conditions as claimed in claim 1 use high-frequency screen sand system processed it is characterised in that: be applied to high wind bar
Sand processed under part.
6. under high wind conditions as claimed in claim 1, use the sand system processed sand method processed used of high-frequency screen it is characterised in that:
Take following steps:
1. the stone powder characteristic of building stones used by analysis woollen material source, and thereby determine that lectotype selection；
2. according to stone powder airborne dust characteristic, determine the concrete installation site of described shower and the size of shower water, make water spray
It is as little as possible under the premise of airborne dust is just repressed；
3. the overfall sewage of described emery dust quick disconnector (7), the sewage of described mud conditioning device (4) are taken in blowdown ratio
Blowdown proportion is measured, the blowdown according to mensure is than the overflow open height of reconditioning described emery dust quick disconnector (7) after mixing；
4. the water amount of blowdown of described mud conditioning device (4) and the aperture of high-frequency screen screen cloth are adjusted；
5. equipment of opening carries out sand processed.
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| CN201410516118.XA CN104889047B (en) | 2014-09-29 | 2014-09-29 | Sand making system using high-frequency sieve under strong wind conditions and method of sand making system |
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| CN201410516118.XA CN104889047B (en) | 2014-09-29 | 2014-09-29 | Sand making system using high-frequency sieve under strong wind conditions and method of sand making system |
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| CN104889047B true CN104889047B (en) | 2017-01-25 |
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| CN108671672A (en) * | 2018-07-27 | 2018-10-19 | 中交路桥华南工程有限公司 | Dust falling system and method |
| CN111135937A (en) * | 2019-12-25 | 2020-05-12 | 日昌升建筑新材料设计研究院有限公司 | Three-crushing two-screening circulating production process for machine-made sand and stone |
| CN112517395A (en) * | 2020-11-18 | 2021-03-19 | 中国水利水电第九工程局有限公司 | Method for adjusting fineness modulus of machine-made sand composite screen |
| CN112916198A (en) * | 2021-01-29 | 2021-06-08 | 中国水利水电第九工程局有限公司 | Wet screening sand making system and method under strong wind condition |
| CN112916181A (en) * | 2021-01-29 | 2021-06-08 | 中国水利水电第九工程局有限公司 | Sand production process for dust suppression and flying sand prevention under strong wind condition |
| CN112934437A (en) * | 2021-02-04 | 2021-06-11 | 中国水利水电第九工程局有限公司 | Continuous grading production system and process for sandstone aggregate for high-performance concrete |
| CN113426548B (en) * | 2021-06-28 | 2022-06-17 | 中国水利水电第九工程局有限公司 | Control method for wet screening and dry crushing process of fine crushing workshop in machine-made gravel |
| CN113413996B (en) * | 2021-06-28 | 2022-06-21 | 中国水利水电第九工程局有限公司 | Sand processing plant vertical shaft crusher sand wet method quantitative powder removal regulation and control method |
| CN113457837B (en) * | 2021-07-09 | 2022-06-17 | 中国水利水电第九工程局有限公司 | Method for washing coarse aggregate and monitoring pitch diameter on line in machine-made gravel production workshop |
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| KR100862015B1 (en) * | 2007-01-24 | 2008-10-07 | 뉴클린환경산업 주식회사 | Device for separation the industrial waste |
| CN100540177C (en) * | 2007-10-17 | 2009-09-16 | 中国水利水电第九工程局 | Half dry type artificial sand production technology intelligent control system |
| CN101525218B (en) * | 2009-04-07 | 2012-11-21 | 中国水利水电第五工程局有限公司 | Technology for making sand from sandstone |
| CN101633154B (en) * | 2009-08-05 | 2011-05-18 | 长沙矿冶研究院 | Online high-pressure water jet sand blasting surface cleaning system |
| CN202366871U (en) * | 2011-12-15 | 2012-08-08 | 上海城建物资有限公司 | Sand-stone separator |
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