CN113045151A - Method and device for treating sand-rich slurry and converting sand-rich slurry into filler - Google Patents
Method and device for treating sand-rich slurry and converting sand-rich slurry into filler Download PDFInfo
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- CN113045151A CN113045151A CN202110314956.9A CN202110314956A CN113045151A CN 113045151 A CN113045151 A CN 113045151A CN 202110314956 A CN202110314956 A CN 202110314956A CN 113045151 A CN113045151 A CN 113045151A
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- 239000004576 sand Substances 0.000 title claims abstract description 73
- 239000000945 filler Substances 0.000 title claims abstract description 34
- 239000002002 slurry Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 46
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000005086 pumping Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000011268 mixed slurry Substances 0.000 claims abstract description 9
- 208000005156 Dehydration Diseases 0.000 claims abstract description 8
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 8
- 230000018044 dehydration Effects 0.000 claims abstract description 7
- 238000005189 flocculation Methods 0.000 claims abstract description 6
- 230000016615 flocculation Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 238000012216 screening Methods 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000008394 flocculating agent Substances 0.000 claims description 11
- 229910001018 Cast iron Inorganic materials 0.000 claims description 10
- 238000011068 loading method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
A method for treating sand-rich mud to convert the sand-rich mud into filler, comprising the following steps: s1, sand grains contained in the sand-rich engineering mud are screened out in a polarity mode and then pumped into a curing agent stirring tank, and the curing agent stirring tank is mixed and stirred with the composite curing agent to obtain mixed mud liquid containing the curing agent; s2, pumping the mixed slurry containing the curing agent into a flocculant stirring tank to be mixed and stirred with a flocculant to obtain the mixed slurry after the curing and flocculation treatment; s3, pumping the mixed slurry obtained in the step S2 into a plate and frame filter press, and carrying out dehydration treatment to produce a mud cake; s4, compacting and cutting the mud cake by using a granulating device to obtain mud particles, and adding sand particles to stir to obtain the engineering filler. According to the method and the device for processing and converting the sand-rich slurry into the filler, the sand-rich slurry is processed through the combined dehydration of the composite curing agent, the mud cake is compacted and cut through the mold and is converted into mud particles, the mud particles and the sand are mixed to be used as the filler for earthwork construction, the environmental disposal pressure can be reduced, and the resource maximization of the recycling of the sand-rich slurry can be realized.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a method for treating sand-rich mud, in particular to a method and a device for treating and converting the sand-rich mud into filler.
[ background of the invention ]
In the construction process of diaphragm wall construction and bored pile, the slurry retaining wall is often adopted, the depth of a drilled hole is large, the drilled hole penetrates through a plurality of underground soil layers, particularly when a fine sand layer is encountered, the sand content of engineering slurry needing to be abandoned in the slurry retaining wall is large (particularly, the fine sand with relatively small particles), and how to effectively treat the sand-rich slurry is always a difficult problem in the engineering industry, so that a method for treating the sand-rich slurry is urgently needed.
[ summary of the invention ]
In order to solve the problems, the invention provides a method and a device for processing and converting sand-rich slurry into filler, the sand-rich slurry is processed by the combined dehydration of a composite curing agent, a mud cake is compacted and cut by a mould and is converted into mud particles, the mud particles and sand are mixed to be used as the filler for earthwork construction, the environmental disposal pressure can be reduced, and the resource maximization of the reuse of the sand-rich slurry can be realized.
The invention is realized by the following technical scheme, and provides a method for processing and converting sand-rich mud into filler, which comprises the following steps:
s1, primarily screening sand grains contained in the sand-rich engineering slurry by using a high-precision cyclone screening device, pumping the sand grains into a curing agent stirring tank, and adding a composite curing agent for stirring to obtain mixed slurry containing the curing agent;
s2, continuously pumping the mixed mud liquid containing the curing agent into a flocculant stirring tank, adding a flocculant into the tank, and stirring to obtain the mixed mud liquid after curing and flocculation treatment;
s3, pumping the mixed slurry after the solidification and flocculation treatment into a plate and frame filter press, and performing dehydration treatment by the plate and frame filter press to produce a mud cake;
s4, adopting a granulating device to collect mud cakes, compacting and cutting the mud cakes to obtain mud grains with different apertures, stirring the mud grains and sand grains sieved out from the S1, and obtaining the engineering filler after natural curing.
Particularly, in the step S1, a standing and screening treatment is required before the treatment to remove large-particle-size stones and impurities contained therein, the separation precision of the high-precision cyclone sand remover is 2mm, the stirring speed of the curing agent stirring tank is 100r/min, and the stirring time is 15 min.
In particular, the composite curing agent in the step S1 is cement and GGBS according to the weight ratio of 1:1, for the same slurry, the higher the content of the composite curing agent, the higher the strength of the prepared mud cake, specifically, a proper proportion is selected according to the water content of the low-sand slurry, however, the too high content of the composite curing agent can affect the cutting of the subsequent mud cake while causing waste, therefore, in the invention, the mass ratio of the composite curing agent to the screening and drying granule engineering slurry is (1-1.5): 10; in the invention, GGBS is blast furnace slag which is an industrial waste difficult to naturally degrade, but the GGBS can be used as an alkali-activated material in the invention, can exert a better curing effect after being mixed with cement, and realizes reasonable utilization of waste resources.
Specifically, in the step S2, the flocculant is AN anionic AN926SH type with a mass fraction of 0.1%, and is prepared from PAM particles and water in a mass ratio of 1:1000, and the flocculant and the mixed slurry containing the curing agent are mixed in a ratio of 1: and (3-4), the stirring speed of the flocculant stirring pool is 80r/min, and the stirring time is 15 min.
In particular, the filter dewatering time in step S3 is 40 min.
Specifically, the step S4 is implemented according to the following method:
s41, collecting the mud cakes into a granulating device until the granulating device is filled with the mud cakes, putting a loading steel plate into an inlet of the granulating device, compacting the mud cakes by a jack in a squeezing way for not less than 24 hours, and waiting for the composite curing agent in the mud cakes to further react;
s42, cutting the compacted mud cake to obtain mud grains with different grain sizes, wherein the mud mainly comprises clay grains, and in order to prevent the mutual adhesion of the mud grains, the mud grains and sand grains screened out from the S1 are stirred and piled up after natural maintenance to obtain the engineering filler, and the addition amount of the sand grains is not required to cause the adhesion of the mud grains, so that the performance of the engineering filler is ensured.
In particular, the diameter of the granulating device is 400mm, 480mm and 600mm, and the height of the granulating device for cutting mud particles can be set according to requirements.
The invention also provides a device for processing and converting the sand-rich mud into the filler, which comprises: high accuracy whirl screening ware, locate curing agent stirring pond, flocculating agent stirring pond, plate and frame pressure filter, a plurality of granulation device of high accuracy whirl screening ware one side in proper order, pass through the pipe connection between high accuracy whirl screening ware top, curing agent stirring pond, flocculating agent stirring pond, the plate and frame pressure filter, it throws the material device to be equipped with a curing agent between high accuracy whirl screening ware and the curing agent stirring pond, it throws the material device to be equipped with a flocculating agent between curing agent stirring pond, the flocculating agent stirring pond, its characterized in that, the granulation device includes: the cast iron container wall, loading steel sheet, shutoff steel sheet, cutting string and support, the support top is located to the cast iron container wall, and the bottom of this cast iron container wall evenly is equipped with a plurality of discharge gates, the cast iron container wall inner wall top is located to the loading steel sheet, and this loading steel sheet top is equipped with the jack, the shutoff steel sheet is located the discharge gate below and is used for sealed discharge gate, the cutting string is the U type, and the shutoff steel sheet below is located to the cast iron container wall outside, bottom at its both ends.
Particularly, a mortar pool is arranged below the high-precision cyclone screening device.
Particularly, the discharge holes of the plurality of granulating devices have different grain sizes, and the granulating devices are sequentially arranged on the conveyer belt.
The invention provides a method and a device for processing sand-rich mud and converting the sand-rich mud into filler, which have the following advantages:
1. the cement and GGBS are used as a composite curing agent to treat the sand-rich slurry, the alkalinity of the produced mud cake is greatly improved, the mud cake compacting time in the treatment process is not less than 24 hours, the process has a physical compacting effect, sufficient time is left for the curing agent in the mud cake to carry out chemical reaction, and more cementing substances are generated by reactants, so that the mud cake is more compact, and the requirements of engineering fillers are met;
2. by utilizing solidification-dehydration treatment and adopting a special granulating device, mud particles with different sizes are produced by cutting and serve as fillers, so that the method is suitable for different engineering requirements, the problems of site occupation and long treatment time are greatly reduced, and the treatment pressure of waste engineering slurry is reduced;
3. the sand grains in the sand-rich slurry are separated by adopting the high-precision cyclone desander to form concentrated mortar, the subsequent sand for mixing the mud grains is obtained by adopting methods such as filtering, drying and the like for the concentrated mortar, additional sand is not needed, the resource maximum utilization of the sand-rich slurry is realized, and the problems of shortage and gradual exhaustion of building sand resources are solved.
[ description of the drawings ]
FIG. 1 is a flow diagram of a method of treating a sand-rich mud to convert the mud to a filler material according to the present invention;
FIG. 2 is a schematic view of an apparatus for treating sand-rich slurry to convert the sand-rich slurry into filler according to the present invention;
FIG. 3 is a schematic view of the structure of the cutting direction of the cutting steel chord in the device for processing and converting sand-rich mud into filler.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
Referring to fig. 1-3, the present invention provides a method for processing sand-rich mud to convert the sand-rich mud into filler, which is implemented by the following steps:
s1, the sand-rich slurry which is pre-treated to remove large particle impurities is pumped into the high-precision cyclone desander 1, the pre-treated sand-rich engineering slurry should not contain large-particle-size stone blocks and other impurities, can be processed by standing and screening, the separated sand grains with the grain diameter of 2mm are set to be screened, most of the sand grains flow into the sand pulp pool 13 from the tail flow port below, the clay grains with smaller grain diameter (less than 2 mm) in the mud are discharged from the overflow port above, the mud at the overflow port is continuously processed subsequently, the screened sand grains are dried, then the mud at the overflow port is pumped to the curing agent stirring pool 2 and passes through the curing agent feeding device 6, the device can set the feeding amount according to the requirement, and add the composite curing agent (cement + GGBS) into the pool to be uniformly stirred, wherein the stirring speed is 100r/min, and the stirring time is 15min, so as to obtain the primarily treated mixed mud liquid containing the curing agent;
s2, continuously pumping the mixed mud liquid containing the curing agent into a flocculant stirring tank 3, setting the feeding amount according to the requirement by a flocculant feeding device 7, adding a flocculant (PAM) into the tank, uniformly stirring, wherein the stirring speed is 80r/min, and the stirring time is 15min, so as to obtain the primarily treated mixed mud liquid containing the curing agent and the flocculant;
s3, pumping the mixed slurry after the solidification and flocculation treatment into a plate and frame filter press 4, and performing dehydration treatment by the plate and frame filter press 4 to produce a mud cake, wherein the dehydration time of the filter press is about 40 min;
s4, collecting the mud cakes into a granulating device 5 for producing mud grains with different diameters, blocking a mud grain discharge port 12 with a blocking steel plate 10 at the lower part, and replacing the granulating device by a conveyor belt 14 after the mud cakes are filled. And putting a loading steel plate 9 on the granulating device filled with the mud cakes, extruding the compact mud cakes by using a jack, and waiting for the curing agent in the mud cakes to further react. The diameter of the granulating device can be selected to be 400mm, 480mm and 600mm, a plurality of granulating devices 5 are required to be arranged in the actual use process, and the time for compacting the mud cakes in the granulating devices 5 is not less than 24 h;
the method comprises the following steps of removing the plugging steel plate 10 below the granulating device, periodically cutting steel strings below the granulating device 5, continuously generating mud particles by the granulating device, mixing the mud particles with dried sand particles or plain soil of S1, naturally curing, and piling up the mixture to be used as engineering filler.
Claims (10)
1. A method for processing and converting sand-rich mud into filler is characterized by comprising the following steps:
s1, primarily screening sand grains contained in the sand-rich engineering slurry by using a high-precision cyclone screening device, pumping the sand grains into a curing agent stirring tank, and adding a composite curing agent for stirring to obtain mixed slurry containing the curing agent;
s2, continuously pumping the mixed mud liquid containing the curing agent into a flocculant stirring tank, adding a flocculant into the tank, and stirring to obtain the mixed mud liquid after curing and flocculation treatment;
s3, pumping the mixed slurry after the solidification and flocculation treatment into a plate and frame filter press, and performing dehydration treatment by the plate and frame filter press to produce a mud cake;
s4, adopting a granulating device to collect mud cakes, compacting and cutting the mud cakes to obtain mud grains with different apertures, stirring the mud grains and sand grains sieved out from the S1, and obtaining the engineering filler after natural curing.
2. The method for processing and converting sand-rich mud into filler according to claim 1, wherein the step S1 is to perform a standing and screening process to remove large-particle-size stone and impurities contained therein before processing, the separation precision of the high-precision cyclone sand remover is 2mm, the stirring speed of the curing agent stirring tank is 100r/min, and the stirring time is 15 min.
3. The method for processing and converting sand-rich mud into filler according to claim 1, wherein the composite curing agent in the step S1 is cement and GGBS in a ratio of 1:1, the mass ratio of the composite curing agent to screening and drying granule engineering slurry is (1-1.5): 10.
4. the method for processing and converting sand-rich mud into filler according to claim 1, wherein in the step S2, the flocculating agent is selected from anionic AN926SH with the mass fraction of 0.1%, the flocculating agent is prepared by mixing PAM particles and water according to the mass ratio of 1:1000, and the flocculating agent and the mixed mud liquid containing the curing agent are mixed according to the weight ratio of 1: and (3-4), the stirring speed of the flocculant stirring pool is 80r/min, and the stirring time is 15 min.
5. The method for processing and converting the sand-rich mud into the filler according to claim 1, wherein the filter press dewatering time in the step S3 is 40 min.
6. The method for processing and converting sand-rich mud into filler according to claim 1, wherein the step S4 is implemented according to the following method:
s41, collecting the mud cakes into a granulating device until the granulating device is filled with the mud cakes, putting a loading steel plate into an inlet of the granulating device, compacting the mud cakes by a jack in a squeezing way for not less than 24 hours, and waiting for the composite curing agent in the mud cakes to further react;
s42, cutting the compacted mud cake to obtain mud grains with different grain sizes, stirring the mud grains and the sand grains screened out from the S1, and stacking after natural curing to obtain the engineering filler.
7. The method for processing and converting sand-rich mud into filler according to claim 6, wherein the diameter of the granulating device is 400mm, 480mm or 600mm, and the height of the granulating device can be set according to requirements to cut out mud particles.
8. An apparatus for processing a sand-rich mud to convert the sand-rich mud to a filler material, comprising: high accuracy cyclone screening ware (1), locate curing agent stirring pond (2), flocculating agent stirring pond (3), plate and frame pressure filter (4), a plurality of granulation device (5) of high accuracy cyclone screening ware (1) one side in proper order, pass through the pipe connection between high accuracy cyclone screening ware (1) top, curing agent stirring pond (2), flocculating agent stirring pond (3), plate and frame pressure filter (4), it throws material device (6) to be equipped with a curing agent between high accuracy cyclone screening ware (1) and curing agent stirring pond (2), it throws material device (7) to be equipped with a flocculating agent between curing agent stirring pond (2), flocculating agent stirring pond (3), its characterized in that, granulation device (5) include: cast iron container wall (8), loading steel sheet (9), shutoff steel sheet (10), cutting string (11) and support, the support top is located in cast iron container wall (8), and the bottom of this cast iron container wall (8) evenly is equipped with a plurality of discharge gates (12), cast iron container wall (8) inner wall top is located in loading steel sheet (9), and this loading steel sheet (9) top is equipped with the jack, discharge gate (12) below is located in shutoff steel sheet (10) and is used for sealed discharge gate (12), cutting string (11) are the U type, and shutoff steel sheet (10) below is located in cast iron container wall (8) outside, bottom in its both ends.
9. The device for processing and converting the sand-rich mud into the filler according to the claim 8 is characterized in that a mortar pool (13) is arranged below the high-precision cyclone screening device (1).
10. The apparatus for processing a sand-rich slurry into a filler according to claim 8, wherein the discharge openings (12) of the plurality of granulating devices (5) have different particle sizes, and the granulating devices (5) are arranged on the conveyor belt (14) in sequence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110314956.9A CN113045151A (en) | 2021-03-24 | 2021-03-24 | Method and device for treating sand-rich slurry and converting sand-rich slurry into filler |
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| CN202110314956.9A CN113045151A (en) | 2021-03-24 | 2021-03-24 | Method and device for treating sand-rich slurry and converting sand-rich slurry into filler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835367A (en) * | 2022-05-07 | 2022-08-02 | 国网江苏省电力有限公司建设分公司 | Preparation method and device of solidified earthwork mud bag for filler |
| CN116081997A (en) * | 2023-01-13 | 2023-05-09 | 国网江苏省电力有限公司建设分公司 | Filler brick prepared from waste slurry residues in power grid engineering construction |
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| CN114835367A (en) * | 2022-05-07 | 2022-08-02 | 国网江苏省电力有限公司建设分公司 | Preparation method and device of solidified earthwork mud bag for filler |
| CN116081997A (en) * | 2023-01-13 | 2023-05-09 | 国网江苏省电力有限公司建设分公司 | Filler brick prepared from waste slurry residues in power grid engineering construction |
| CN116081997B (en) * | 2023-01-13 | 2024-01-16 | 国网江苏省电力有限公司建设分公司 | Filler brick prepared from waste slurry residues in power grid engineering construction |
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Application publication date: 20210629 |