CN113522946A - Novel soil improvement treatment system, process and application - Google Patents
Novel soil improvement treatment system, process and application Download PDFInfo
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- CN113522946A CN113522946A CN202110618872.4A CN202110618872A CN113522946A CN 113522946 A CN113522946 A CN 113522946A CN 202110618872 A CN202110618872 A CN 202110618872A CN 113522946 A CN113522946 A CN 113522946A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to the technical field of soil improvement, in particular to a novel system, a novel process and a novel application of soil improvement treatment, wherein the process comprises the following steps: a, preparing raw material soil; b, adding an additive; c, crushing and atomizing; e, vibrating and sieving, and adding a dust removal and dust recovery device while crushing and atomizing, wherein the process can be applied to the improvement of various waste mineral soils and the resource recycling of soil; the novel soil improvement treatment process and application can realize continuous production, large yield and high efficiency, are suitable for various soil improvement working conditions with different properties and different yield requirements, and have wide application range.
Description
Technical Field
The invention relates to the technical field of soil improvement, in particular to a novel system, a novel process and a novel application of soil improvement treatment.
Background
Soil improvement refers to a general term for a series of technical measures for improving soil properties, improving soil fertility and creating good soil environmental conditions for crops. The basic measures comprise: improving soil water conservancy, and removing and preventing swampiness and salinization; soil engineering improvement, such as applying engineering measures of land leveling, terrace building, flood diversion, silt overflowing and the like to improve soil conditions; soil organism improvement, which is to increase soil organic matters to improve soil fertility or build a protection forest to prevent water and soil loss and the like by applying various biological approaches; soil cultivation improvement, namely improving soil conditions by improving a cultivation method; chemical improvement of soil, such as application of chemical fertilizers and various soil conditioners, and the like, for improving soil fertility, improving soil structure, eliminating soil pollution, and the like.
At present, the soil recycling rate of China is far lower than the level of developed countries such as Europe, America, Japan and the like; with the enhancement of consciousness of shortage of soil resources, random stacking and random throwing actions are no longer accepted by people, how to treat stagnant soil resources and turn waste into wealth becomes a subject which we have to face, and particularly, waste mineral soil, such as building residue soil, for example, river dredging soil, Volatile Organic Compound (VOC) polluted soil, heavy metal polluted soil and the like is changed into treatment of available soil, a systematic effective improvement method is not formed in China at present, and the soil recycling is still a task.
Disclosure of Invention
The invention provides a novel soil improvement treatment system, a novel soil improvement treatment process and application, wherein the soil improvement process of the system is used for improving various waste mineral soils to obtain usable improved soil, and the process is not limited to soil types and has wide application range.
As a first aspect of the present invention, there is provided a system for a novel soil improvement treatment, comprising:
soil dosing unit: the device comprises a storage bin for storing raw material soil, an aggregate belt conveyor for conveying the raw material soil and a bin bottom belt for conveying the raw material soil from the storage bin to the aggregate belt conveyor;
the additive adding device comprises: the device comprises an external additive powder tank for storing the additive, an additive metering bin for metering the additive, a screw conveyor for connecting the external additive powder tank with the additive metering bin, and a chute for further conveying the additive from the additive metering bin;
a crushing and atomizing device: the vertical rotary crushing mixer is used for crushing and atomizing the raw material soil and uniformly mixing the raw material soil with the admixture, and comprises a crushing cavity and crushing and mixing blades arranged in the crushing cavity; the feed inlet of the vertical rotary crushing mixer is connected with the aggregate belt conveyor and the chute;
vibrating and sieving device: the vibrating screen comprises a vibrating screen for vibrating screening and is connected with a discharge port of the vertical rotary crushing mixer.
Further, the system also comprises a dust removal device, the dust removal device comprises a pulse dust collector and a fan, the pulse dust collector is connected with a dust suction port at the discharge port of the vertical type rotary crushing mixer through an air pipe, a conical hopper is arranged at the lower part of the pulse dust collector and used for settling filtered dust, and the conical hopper is connected with a feed port of the vertical type rotary crushing mixer through a powder feeding pipeline and a chute of the admixture and used for recycling the dust.
Furthermore, the bin bottom belt is a bin bottom variable-frequency conveying belt conveyor which can adjust the blanking speed of the bin.
Further, the admixture metering bin is provided with a weighing sensor and a feeding valve which are connected with the PLC, and the feeding valve is used for controlling the amount of the admixture entering the admixture metering bin.
Further, the screw conveyer is provided with a discharge valve which is connected with the PLC and is controlled by the PLC, and the discharge valve is used for controlling the amount of the additive conveyed to the additive metering bin.
Further, an additive temporary storage bin is arranged between the external additive powder tank and the screw conveyor.
Further, the vertical type rotary crushing mixer is cylindrical, and a plurality of flexible blades are arranged in parallel in the vertical type rotary crushing mixer.
Further, the admixture comprises: one or more of mineral soil conditioners, natural and semisynthetic water-soluble polymer soil conditioners, artificially synthesized polymer soil conditioners and beneficial microbial preparation soil conditioners.
Further, the artificially synthesized polymer soil conditioner comprises one or more of polyacrylic acids, vinyl acetate maleic acids and polyvinyl alcohol.
Further, the beneficial microbial preparation soil conditioner comprises at least one of seaweed extract and humic acid fertilizer.
As a second aspect of the present invention, a novel soil improvement treatment process is provided, which is characterized in that: the process comprises the following steps:
a, raw material soil batching: one or more raw material soils are loaded into a storage bin through a loader, and then are uniformly discharged onto an aggregate belt conveyor through a bottom belt of the storage bin; all raw material soils are mixed according to a preset formula in proportion;
b, adding an additive: one or more adaptive additives are conveyed from additive powder tanks to an additive metering bin through a screw conveyor and then are accurately metered, and then the additives are conveyed through a chute;
c, crushing and atomizing: inputting all raw material soil above the aggregate belt conveyor in the step A and all additives in the chute in the step B into a vertical rotary crushing mixer together, enabling the materials to enter from an upper feeding hole and move downwards under the action of self weight, and contacting crushing and mixing blades rotating at high speed in the vertical rotary crushing mixer in the moving process, and crushing and atomizing various materials to be mixed in a crushing cavity by the crushing and mixing blades to enable the materials to be fully and uniformly mixed;
e, vibrating and sieving: and C, screening the materials crushed, atomized and mixed in the step C by using a vibrating screen, and removing larger foreign matters in the materials by using the vibrating screen to form the finally improved soil.
Further, the process also comprises a dust removal process D, which is carried out simultaneously with the crushing and atomization of the step C, and specifically comprises the following steps: will vertical rotatory broken mixer discharge gate and bottom connect the material belt to connect the close bed and connect, prevent that the powder admixture from escaping and reach dust removal effect.
Further, the dust removal process D also comprises the step of arranging a dust suction port at the discharge port of the vertical rotary crushing mixer, wherein the dust suction port is connected with a pulse dust collector and a fan through an air pipe, and negative pressure is formed at the outlet of the vertical rotary crushing mixer; the dust sucked by the air pipe is filtered by a filter bag of the pulse dust collector, then is settled in a cone hopper at the lower part of the pulse dust collector, is mixed by a powder feeding pipeline and the additive chute, and then enters a feed inlet of the vertical rotary crushing mixer again for recycling; the pulse dust collector is used for cleaning dust of the filter bag at regular time so as to ensure that the filter bag is in an optimal filtering state.
Furthermore, the bin bottom belt is a bin bottom variable-frequency conveying belt conveyor which can adjust the blanking speed of the bin.
Further, the admixture metering bin is provided with a weighing sensor and a feeding valve which are connected with the PLC, and the feeding valve is used for controlling the amount of the admixture entering the admixture metering bin.
Further, the screw conveyer is provided with a discharge valve which is connected with the PLC and is controlled by the PLC, and the discharge valve is used for controlling the amount of the additive conveyed to the additive metering bin.
Further, an additive temporary storage bin is arranged between the external additive powder tank and the screw conveyor.
Further, the vertical type rotary crushing mixer is cylindrical, and a plurality of flexible blades are arranged in parallel in the vertical type rotary crushing mixer.
Further, the admixture comprises: one or more of mineral soil conditioners, natural and semisynthetic water-soluble polymer soil conditioners, artificially synthesized polymer soil conditioners and beneficial microbial preparation soil conditioners.
Further, the artificially synthesized polymer soil conditioner comprises one or more of polyacrylic acids, vinyl acetate maleic acids and polyvinyl alcohol.
Further, the beneficial microbial preparation soil conditioner comprises at least one of seaweed extract and humic acid fertilizer.
As a third aspect of the present invention, there is proposed the use of the process of the novel soil improvement treatment as described above: the process is used for improving building slag soil and river dredged soil, improving mud cakes, purifying Volatile Organic Compound (VOC) polluted soil, non-melting treatment of heavy metal polluted soil, crushing concrete blocks, shells and slag and realizing recycling.
Compared with the prior art, the invention has the beneficial effects that:
1, the novel soil improvement treatment process and application can effectively promote the recycling of construction wastes and realize the purification of the soil environment;
2, the application range of the raw material soil is wide, and the soil can be used for improving building residue soil and river channel dredging soil; improvement of mud cakes, production of CSG materials and the like; can also be used for the purification treatment of Volatile Organic Compounds (VOC) polluted soil and the non-melting treatment of heavy metal polluted soil; the concrete blocks, shells and various slag are crushed and recycled.
3 the novel soil improvement treatment process and the application can realize continuous production, large yield and high efficiency, are suitable for various soil improvement working conditions with different properties and different yield requirements, and have wide application range.
Drawings
FIG. 1 is a schematic view of a soil improvement process according to example 1 of the present invention;
FIG. 2 is a schematic view of a soil improvement process according to example 1 of the present invention;
fig. 3 is a schematic view of a soil improvement process according to embodiment 2 of the present invention.
The device comprises a storage bin 1, an aggregate belt conveyor 2, an external additive powder tank 3, a spiral conveyor 4, an additive metering bin 5, a chute 6, a vertical rotary crushing mixer 7, a feeding hole 70, crushing mixing blades 71, a crushing cavity 72, a vibrating screen 8, a discharging hole 73, a material receiving belt 74, a vibrating screen 8, an air pipe 9, a pulse dust collector 10, a cone hopper 100, a powder feeding pipeline 101 and a fan 11.
Detailed Description
The invention will be further explained with reference to the drawings and examples.
Example 1
As a first aspect of the present embodiment, a system for a novel soil improvement treatment is provided, including:
soil dosing unit: the device comprises a storage bin 1 for storing raw material soil, an aggregate belt conveyor 2 for conveying the raw material soil and a bin bottom belt for conveying the raw material soil from the storage bin 1 to the aggregate belt conveyor 2;
the additive adding device comprises: the device comprises an external additive powder tank 3 for storing the additive, an additive metering bin 5 for metering the additive, a screw conveyor 4 for connecting the external additive powder tank 3 and the additive metering bin 5, and a chute 6 for further transporting the additive from the additive metering bin 5;
a crushing and atomizing device: the vertical rotary crushing mixer 7 is used for crushing and atomizing the raw material soil and uniformly mixing the raw material soil with the admixture, and comprises a crushing cavity 72 and crushing and mixing blades 71 arranged in the crushing cavity 72; the feed inlet 71 of the vertical rotary crushing mixer 7 is connected with the aggregate belt conveyor 2 and the chute 6;
vibrating and sieving device: it comprises a vibrating screen 8 for vibrating screening and is connected with a discharge port of the vertical rotary crushing mixer 7.
With the system device, as shown in fig. 1 and fig. 2, the second aspect of the present embodiment, i.e. a novel soil improvement treatment process, is proposed, which comprises the following steps:
a, raw material soil batching: one or more raw material soils are loaded into a bin 1 through a loader and then are uniformly discharged onto an aggregate belt conveyor 2 through a bin bottom belt; all raw material soils are mixed according to a preset formula in proportion;
b, adding an additive: one or more adaptive additives are conveyed through a chute 6 after reaching an additive metering bin 5 from an additive powder tank 3 to be accurately metered through a screw conveyor 4;
c, crushing and atomizing: all raw material soil above the aggregate belt conveyor in the step A and all additives in the chute in the step B are input into a vertical rotary crushing mixer 7 together, materials enter from an upper feeding hole 70 and move downwards under the action of self weight, and are contacted with crushing and mixing blades 71 rotating at high speed in the vertical rotary crushing mixer in the moving process, and the crushing and mixing blades crush and atomize various materials to be mixed in a crushing cavity 72, so that the materials are fully and uniformly mixed;
e, vibrating and sieving: and C, discharging the materials crushed, atomized and mixed in the step C, and screening the materials by using a vibrating screen 8, wherein the vibrating screen 8 removes larger foreign matters in the materials to form the final improved soil.
The bin bottom belt is a bin bottom variable-frequency conveying belt conveyor which can adjust the blanking speed of the bin.
The admixture metering bin 5 has an accurate weighing function and a weight control function, and in the embodiment, is provided with a weighing sensor and a discharge valve which are connected with a PLC (programmable logic controller), wherein the discharge valve is used for controlling the amount of the admixture entering the vertical rotary crushing mixer 7; and meanwhile, the screw conveyor 4 is provided with a discharge valve which is connected with the PLC and is controlled by the PLC, and the discharge valve is used for controlling the amount of the admixture conveyed to the admixture metering bin 5. It sets for the admixture weight through workman's operating panel, weighing sensor calls into the weight of entering admixture measurement storehouse 5, when its weight of calling out reaches and sets for the admixture weight, PLC control screw conveyer 4's bleeder valve is closed, simultaneously the bleeder valve of admixture measurement storehouse 5 is carried the material through chute 6, if the weight of admixture measurement storehouse 5 is greater than when setting for the weight, it is through the weight of the admixture that enters into chute 6 of bleeder valve control of admixture measurement storehouse 5, weigh the weight promptly and subtract the surplus weight and set for the admixture weight equal can guarantee to enter into the chute 6 the admixture weight be for setting for the weight, with this realize that the accurate of admixture weighs reinforced.
In order to facilitate the batch conveying of the additive, an additive temporary storage bin is arranged between the additive powder tank 3 and the screw conveyor 4, can store the additive in small batches, and can carry out the transfer conveying from the additive powder tank 3 when the quantity is reduced.
The crushing mixing blade structure of the crushing cavity has various structures, and the proper mixing stirring blade can be selected according to the soil particle size and the characteristics of the actual crushed object so as to achieve the optimal crushing and mixing effect. For example, in the present embodiment, the vertical type rotary crushing mixer 7 is cylindrical, and has a plurality of flexible crushing and mixing blades 71 provided in parallel inside thereof, and crushes and mixes the soil material by the impact force of the flexible crushing and mixing blades 71; the granulation/pulverization can simultaneously and uniformly disperse the added materials to achieve the effect of more uniform mixing.
The admixture comprises: one or more of mineral soil conditioners, natural and semisynthetic water-soluble polymer soil conditioners, artificially synthesized polymer soil conditioners and beneficial microbial preparation soil conditioners.
The mineral soil modifier comprises peat, lignite, weathered coal, lime, gypsum, vermiculite, zeolite, perlite, sepiolite and the like; the natural and semi-synthetic water-soluble polymer soil conditioner comprises a straw polysaccharide material, a cellulose material, a lignin material and a resin glue material; the artificially synthesized macromolecular soil conditioner comprises polyacrylic acids, vinyl acetate maleic acids and polyvinyl alcohols; the beneficial microbial preparation soil conditioner comprises seaweed extract, humic acid fertilizer and the like, and can be selected to use one or more additives according to the type and the improvement formula of specific raw material soil.
The shale shaker removes great foreign matter in the material, for example stone, tree root, weeds etc. of great particle diameter to avoid influencing the special use of improving soil, the shale shaker can change the mounted position or be used as the matching part according to specific operating mode, for example can select the screen cloth aperture size, aperture shape, the screen cloth number of piles, the vibration frequency etc. of shale shaker according to operating mode, in order to obtain the improvement soil that sieves that accords with the requirement.
As a third aspect of this embodiment, an application of the soil improvement treatment process is proposed, that is, the process can be used for improvement of building residue soil, river dredging soil, improvement of mud cake, purification treatment of volatile organic compound VOC-contaminated soil, non-melting treatment of heavy metal-contaminated soil, and crushing and recycling of concrete blocks, shells, and slag.
Example 2
As shown in fig. 3, in this embodiment, on the premise of embodiment 1, a dust removing device and a dust removing process D are added, and the rest of the process is the same as the technical solution of embodiment 1, and in order to simplify the description and highlight the different points of this embodiment, only the differences are described in this embodiment.
The system in the embodiment further comprises a dust removal device, wherein the dust removal device comprises a pulse dust collector 10 and a fan 11, the pulse dust collector is connected with a dust suction opening at the discharge opening of the vertical type rotary crushing mixer 7 through an air pipe 9, a conical hopper 100 is arranged at the lower part of the pulse dust collector 10 and used for settling dust filtered by the pulse dust collector, and the conical hopper 100 is connected with the feed opening 70 of the vertical type rotary crushing mixer 7 through a powder feeding pipeline 101 and the chute 6 of the admixture and used for recycling the dust.
Dust removal technology D in this embodiment sets up and carries out in step C's crushing atomizing in step, specifically includes the setting of three aspects:
the first is the escape that reduces the dust, prevents external environment's pollution, plays preliminary dust removal effect, is about to vertical rotatory broken mix 7 discharge gate 73 of machine and connect the dense layer of material belt 74 to be connected, prevents that the escape of powder admixture from reaching dust removal effect.
Secondly, a dust removing device is arranged to collect and recover dust, namely as shown in fig. 3, a dust suction port can be arranged at the discharge port of the vertical rotary crushing mixer 7 and is connected with a pulse dust collector 10 and a fan 11 through an air pipe 9, negative pressure is formed at the discharge port 73 of the vertical rotary crushing mixer 4, and additive dust cannot escape in a large amount; the quilt the dust warp of tuber pipe 9 suction is in after pulse dust collector 10's filter bag filters pulse dust collector 10 lower part awl fill 100 subsides to through send powder pipeline 101 with 6 mix reentrainment of admixture downward road the feed inlet 70 of vertical rotatory broken mixer 7 to avoid the waste of secondary pollution and admixture, cyclic utilization, this dust collector has not only realized the collection and the dust removal effect of dust, and has sent powder inertia eggs 101 through the setting and retrieve the dust of collecting to vertical rotatory broken mixer 4 once more, has reduced the waste of material, has realized environmental protection and material saving simultaneously.
The third aspect is to ensure the dust removal effect of the pulse dust collector 10 and to perform dust removal on the filter bag at regular time to ensure that the filter bag is in the optimal filtration state.
In this embodiment, only one exemplary dust removal manner is shown, and besides, other dust removal arrangements having a dust removal effect may also be used in the process, for example, the pulse dust collector 10 may be changed into an electrostatic dust collector or the like, or the number of the dust collectors 10 and the installation positions and the number of the air ducts 9 may be increased.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A novel soil improvement treatment system is characterized in that: the method comprises the following steps:
soil dosing unit: the device comprises a storage bin (1) for storing raw material soil, an aggregate belt conveyor (2) for conveying the raw material soil and a bin bottom belt for conveying the raw material soil from the storage bin (1) to the aggregate belt conveyor (2);
the additive adding device comprises: the device comprises an external additive powder tank (3) for storing the additive, an additive metering bin (5) for metering the additive, a screw conveyor (4) for connecting the external additive powder tank (3) with the additive metering bin (5), and a chute (6) for further transporting the additive from the additive metering bin (5);
a crushing and atomizing device: the vertical rotary crushing mixer (7) is used for crushing and atomizing the raw material soil and uniformly mixing the raw material soil with the admixture and comprises a crushing cavity (72) and crushing and mixing blades (71) arranged in the crushing cavity (72); a feed inlet (71) of the vertical rotary crushing mixer (7) is connected with the aggregate belt conveyor (2) and the chute (6);
vibrating and sieving device: the device comprises a vibrating screen (8) for vibrating screening and is connected with a discharge hole of the vertical rotary crushing mixer (7).
2. The system for novel soil improvement treatment according to claim 1, wherein: the system further comprises a dust removing device, the dust removing device comprises a pulse dust collector (10) and a fan (11), the pulse dust collector is connected with a dust suction opening at a discharge opening of the vertical type rotary crushing mixer (7) through an air pipe (9), a cone hopper (100) is arranged on the lower portion of the pulse dust collector (10) and used for settling dust filtered by the cone hopper, the cone hopper (100) is connected with a feed opening (70) of the vertical type rotary crushing mixer (7) through a powder feeding pipeline (101) and an chute (6) of an additive, and the dust is recycled.
3. A process for the application of the novel soil improvement treatment according to claim 1 or 2, characterized in that: the process comprises the following steps:
a, raw material soil batching: one or more raw material soils are loaded into a storage bin (1) through a loader and then are uniformly discharged onto an aggregate belt conveyor (2) through a bin bottom belt; all raw material soils are mixed according to a preset formula in proportion;
b, adding an additive: one or more adaptive additives are conveyed from an additive powder tank (3) to an additive metering bin (5) through a screw conveyor (4) and then are precisely metered, and then are conveyed through a chute (6);
c, crushing and atomizing: all raw material soil above the aggregate belt conveyor in the step A and all additives in the chute in the step B are input into a vertical rotary crushing mixer (7) together, materials enter from an upper feeding hole (70) and move downwards under the action of self weight, and are contacted with crushing and mixing blades (71) rotating at high speed in the vertical rotary crushing mixer in the moving process, and the crushing and mixing blades crush and atomize various materials to be mixed in a crushing cavity (72) so that the materials are mixed fully and uniformly;
e, vibrating and sieving: and C, discharging the materials crushed, atomized and mixed in the step C, and screening the materials by using a vibrating screen (8), wherein the vibrating screen (8) is used for removing larger foreign matters in the materials to form the final improved soil.
4. A novel process of soil improvement treatment according to claim 3, characterized in that: and the process also comprises a dust removal process D which is carried out simultaneously with the crushing and atomization in the step C, wherein the dust removal process D comprises the close-layer connection of a discharge hole (73) of the vertical rotary crushing mixer (7) and a material receiving belt (74) in a manner of preventing the powder admixture from escaping.
5. The novel process of soil improvement treatment according to claim 4, characterized in that: the dust removal process D also comprises the step of arranging a dust suction port at a discharge port of the vertical rotary crushing mixer (7), wherein the dust suction port is connected with a pulse dust collector (10) and a fan (11) through an air pipe (9), and negative pressure is formed at a discharge port (73) of the vertical rotary crushing mixer (4); the dust sucked by the air pipe (9) is filtered by a filter bag of the pulse dust collector (10), then is settled in a cone hopper (100) at the lower part of the pulse dust collector (10), is mixed with the admixture slide channel (6) through a powder conveying pipeline (101), and enters a feeding hole (70) of the vertical rotary crushing mixer (7) again for recycling; the pulse dust collector (10) carries out dust removal on the filter bag at regular time.
6. The novel soil improvement treatment process according to any one of claims 4 to 5, wherein: the bin bottom belt is a bin bottom variable-frequency conveying belt conveyor which can adjust the blanking speed of the bin.
7. The novel process of soil improvement treatment according to claim 6, characterized in that: the admixture metering bin (5) is provided with a weighing sensor and a discharge valve which are connected with a PLC, and the discharge valve is used for controlling the amount of the admixture entering the vertical rotary crushing mixer (7).
8. The novel process of soil improvement treatment according to claim 7, characterized in that: the screw conveyor (4) is provided with a discharge valve which is connected with the PLC and is controlled by the PLC, and is used for controlling the amount of the admixture conveyed to the admixture metering bin (5).
9. The novel process of soil improvement treatment according to claim 8, characterized in that: an additive temporary storage bin is arranged between the external additive powder tank (3) and the screw conveyor (4).
10. Use of the novel process for soil improvement treatment according to any of claims 3 to 9, characterized in that: the process is used for improving building slag soil and river dredged soil, improving mud cakes, purifying Volatile Organic Compound (VOC) polluted soil, non-melting treatment of heavy metal polluted soil, crushing concrete blocks, shells and slag and realizing recycling.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114225805A (en) * | 2021-11-04 | 2022-03-25 | 河海大学 | Automatic waste soil crushing device and intelligent material mixing method |
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