CN117776638A - Silt curing agent with high mixing amount of solid waste - Google Patents
Silt curing agent with high mixing amount of solid waste Download PDFInfo
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- CN117776638A CN117776638A CN202410200073.9A CN202410200073A CN117776638A CN 117776638 A CN117776638 A CN 117776638A CN 202410200073 A CN202410200073 A CN 202410200073A CN 117776638 A CN117776638 A CN 117776638A
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- 239000002910 solid waste Substances 0.000 title claims abstract description 27
- 238000002156 mixing Methods 0.000 title claims abstract description 17
- 239000010802 sludge Substances 0.000 claims abstract description 60
- 239000004568 cement Substances 0.000 claims abstract description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- 239000002893 slag Substances 0.000 claims abstract description 32
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 31
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 19
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000010455 vermiculite Substances 0.000 claims abstract description 18
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 18
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 18
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 16
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000012286 potassium permanganate Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000002745 absorbent Effects 0.000 claims abstract description 11
- 239000002250 absorbent Substances 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 10
- 235000019198 oils Nutrition 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 7
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 7
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 4
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 4
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 4
- 239000008158 vegetable oil Substances 0.000 claims description 4
- 239000010775 animal oil Substances 0.000 claims description 3
- 239000001164 aluminium sulphate Substances 0.000 claims 1
- 235000011128 aluminium sulphate Nutrition 0.000 claims 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 15
- 230000008901 benefit Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 2
- 125000001309 chloro group Chemical class Cl* 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 230000036571 hydration Effects 0.000 description 7
- 238000006703 hydration reaction Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 235000019484 Rapeseed oil Nutrition 0.000 description 5
- 150000001768 cations Chemical class 0.000 description 4
- 235000012343 cottonseed oil Nutrition 0.000 description 4
- 239000002385 cottonseed oil Substances 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- -1 salt ions Chemical class 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of civil engineering materials, and provides a sludge curing agent with high mixing amount of solid wastes. The sludge curing agent with high mixing amount of solid waste comprises the following components in parts by weight: 20-60 parts of superfine lithium slag, 5-20 parts of aluminum sulfate cement, 10-45 parts of cement kiln dust, 5-20 parts of nano silicon dioxide, 0.1-0.35 part of super absorbent resin, 1-5 parts of vermiculite powder, 1-5 parts of potassium permanganate, 1-5 parts of sulfonated oil and 1-5 parts of triethanolamine. The sludge curing agent provided by the invention has the advantages of low cost, high lithium slag content and the like, raw materials can be prepared by simple physical and mechanical mixing, the curing effect is good, the construction period is short and the like in the process of curing marine sludge, and the cured sludge has good early strength and chlorine salt and sulfate corrosion resistance, so that the sludge curing agent has obvious economic benefit, environmental benefit and social benefit.
Description
Technical Field
The invention relates to the technical field of civil engineering materials, in particular to a sludge curing agent with high mixing amount of solid wastes.
Background
Marine sludge has the characteristics of large water content, poor water permeability and low strength, and also contains higher organic substances and harmful salt ions, so that the engineering geological conditions are poor. The solidification treatment of the sludge is one of important ways for recycling the sludge, and the solidification treatment is mainly carried out on the sludge by adding a solidifying agent, so that the method has the advantages of good environmental protection, simple process, capability of reducing pollution and accumulation occupation, capability of using the treated solidified soil as regenerated soil resources and the like, and is widely accepted and used on a large scale at home and abroad. The curing agents currently on the market are various, but most of them have the defect of insufficient early strength. The most commonly used curing agent is ordinary Portland cement, but Portland cement is more polluted in production, and the curing effect is greatly influenced by the outside, such as high content of soluble salt ions, high content of organic matters and the like in soil. If Portland cement is used as the marine sludge curing agent, the curing effect is also not ideal.
The lithium slag is a waste slag generated in the process of producing lithium carbonate, and has SO 4 2- High content, high water absorption, low activity and the like, so that the utilization difficulty is high and the application range is limited. In addition, continuous discharge and open-air stacking of lithium slag also cause problems such as land resource waste and environmental pollution, so how to efficiently utilize the lithium slag becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a sludge curing agent with high mixing amount of solid waste, which aims at solving the technical problems of land resource waste, environmental pollution and the like caused by storage of lithium slag, and solves the technical problems of poor curing effect and the like of the existing curing agent when curing marine sludge.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the sludge curing agent with high solid waste content comprises the following components in parts by weight:
20-60 parts of superfine lithium slag, 5-20 parts of aluminum sulfate cement, 10-45 parts of cement kiln dust, 5-20 parts of nano silicon dioxide, 0.1-0.35 part of super absorbent resin, 1-5 parts of vermiculite powder, 1-5 parts of potassium permanganate, 1-5 parts of sulfonated oil and 1-5 parts of triethanolamine.
Further, the superfine lithium slag is produced by the process of producing lithium carbonate, and the specific surface area of the superfine lithium slag is more than or equal to 800m 2 Per kg, siO in the superfine lithium slag 2 And Al 2 O 3 The total content of (2) is more than or equal to 70 percent.
Further, the aluminum sulfate cement includes 42.5 grade cement.
Further, the specific surface area of the nano silicon dioxide is 80-240 m 2 Kg of SiO in the nano silicon dioxide 2 The content of (2) is more than or equal to 99 percent.
Further, the super absorbent resin comprises one or more of sodium polyacrylate, polyacrylamide and polyvinyl alcohol.
Further, the particle size of the vermiculite powder is more than or equal to 200 mu m.
Further, the sulfonated oil includes sulfonated vegetable oil and/or sulfonated animal oil.
Compared with the prior art, the invention has the following beneficial effects:
the sludge curing agent with high mixing amount of solid waste provided by the invention is prepared by uniformly mixing the raw material components through simple physical and mechanical processes, so that the production cost of the curing agent is reduced; in addition, only grinding, mixing and other processes are involved in the preparation process, so that carbon emission is reduced; in the raw material components, the mixing amount of the lithium slag is large, so that a large amount of industrial solid waste can be consumed, the occupation of the piling land is reduced, the multi-solid waste resource utilization is realized, the environment-friendly effect is realized, the popularization is easy, and the remarkable economic benefit, environmental benefit and social benefit are realized.
The sludge curing agent with high solid waste content is used for curing marine sludge, the unconfined compressive strength of the cured marine sludge can reach 3-5 MPa in 7 days, and the unconfined compressive strength of the cured marine sludge can reach 7-9 MPa in 28 days, so that the curing effect is excellent.
Detailed Description
The sludge curing agent with high solid waste content comprises the following components in parts by weight:
20-60 parts of superfine lithium slag, 5-20 parts of aluminum sulfate cement, 10-45 parts of cement kiln dust, 5-20 parts of nano silicon dioxide, 0.1-0.35 part of super absorbent resin, 1-5 parts of vermiculite powder, 1-5 parts of potassium permanganate, 1-5 parts of sulfonated oil and 1-5 parts of triethanolamine.
In the present invention, the amount of the ultrafine lithium slag is preferably 30 to 50 parts, more preferably 40 to 45 parts.
In the present invention, the amount of the aluminum sulfate cement is preferably 8 to 15 parts, more preferably 10 to 12 parts.
In the present invention, the cement kiln dust is preferably used in an amount of 20 to 40 parts, more preferably 30 to 35 parts.
In the present invention, the amount of the nanosilica is preferably 8 to 15 parts, more preferably 10 to 12 parts.
In the present invention, the amount of the super absorbent resin is preferably 0.15 to 0.30 parts, more preferably 0.20 to 0.25 parts.
In the present invention, the amount of vermiculite powder is preferably 2 to 4 parts, more preferably 3 parts.
In the present invention, the amount of potassium permanganate to be used is preferably 2 to 4 parts, more preferably 3 parts.
In the present invention, the amount of the sulfonated oil is preferably 2 to 4 parts, more preferably 3 parts.
In the present invention, the amount of triethanolamine is preferably 2 to 4 parts, more preferably 3 parts.
In the invention, the superfine lithium slag is produced by the process of producing lithium carbonate, and the specific surface area of the superfine lithium slag is more than or equal to 800m 2 Kg, preferably not less than 850m 2 Preferably not less than 900m 2 /kg; siO in the superfine lithium slag 2 And Al 2 O 3 The total content of (2) is more than or equal to 70%, preferably more than or equal to 75%, and more preferably more than or equal to 80%; by using SiO in superfine lithium slag 2 And Al 2 O 3 With Ca (OH) in marine sludge 2 The pozzolanic reaction takes place to form se:Sub>A stable C-S-H gel and calcium aluminate hydrate C-A-H. In addition, the lithium slag also contains more SO 4 2- Ion, easy to combine with Ca (OH) 2 The combination produces crystalline hydrated calcium sulfoaluminate (Aft) of only a few microns in size, which fills in capillaries or pores to make the structure of the solidified sludge denser, which is beneficial for early strength development.
In the invention, the aluminum sulfate cement comprises 42.5-grade cement, the lithium salt in the superfine lithium slag has a promoting effect on the hydration process of the aluminum sulfate cement, and the strength of the solidified sludge can be rapidly enhanced by accelerating the hydration process.
In the invention, the chemical components of the cement kiln ash comprise CaO and SiO 2 、Al 2 O 3 、Fe 2 O 3 、K 2 O、Na 2 O、SO 3 Cement kiln dust is a by-product of the ordinary cement production process and contains chemical componentsThe cement kiln dust has a certain similarity with cement, but has extremely low use cost compared with common cement, and the cement kiln dust has the same effect as aluminum sulfate cement.
In the invention, the specific surface area of the nano silicon dioxide is 80-240 m 2 Preferably 100 to 200m per kg 2 Preferably 120 to 180m 2 /kg; siO in the nano silicon dioxide 2 The content of (2) is more than or equal to 99%, preferably more than or equal to 99.1%, and more preferably more than or equal to 99.2%; the pozzolan activity, the crystal nucleus effect and the filling effect of the nano silicon dioxide can promote early hydration of cement, on one hand, hydration products form a framework structure with certain strength in sludge, and on the other hand, the nano silicon dioxide can wrap and bond sludge particles, so that the effect of solidifying the sludge is achieved, and the solidified sludge has good strength and chlorine salt and sulfate corrosion resistance.
In the invention, the super absorbent resin comprises one or more of sodium polyacrylate, polyacrylamide and polyvinyl alcohol, preferably sodium polyacrylate and/or polyacrylamide, more preferably sodium polyacrylate, and the super absorbent resin used in the invention is a polymer which contains carboxyl, hydroxyl and other strong hydrophilic groups, can quickly absorb liquid water with dead weight of tens or thousands times through hydration with water to form hydrogen bonds, thus presenting gel-like lightly crosslinked high polymer, and has a three-dimensional crosslinked network structure, can fix free water inside a polymer network through swelling, has special water absorption and water retention capacity, is not easy to lose water even under the conditions of heating and pressurizing, and has better stability under the conditions of light, heat and acid and alkali.
In the invention, the grain diameter of the vermiculite powder is more than or equal to 200 mu m, preferably more than or equal to 220 mu m, and more preferably more than or equal to 240 mu m; the vermiculite powder has a large number of fine pores on the surface, has strong adsorption capacity and strong water absorption, can adsorb redundant free water in the sludge when being doped into the solidified sludge, obviously improves the optimal water content of the solidified sludge, increases the strength of the solidified sludge, reduces the contractility of the solidified sludge, and can be uniformly dispersed around soil particles by using the silicate with a layered structure, so that the sludge particles are wrapped by the vermiculite powder to form a stable and compact structure.
In the invention, as the organic matter content in the marine sludge is higher, potassium permanganate is added to decompose the organic matter, and the potassium permanganate is taken as an oxidant to decompose macromolecular organic matters into small molecules, so that the adverse effect of the organic matters on the hydration process is reduced.
In the present invention, the sulfonated oil includes sulfonated vegetable oil and/or sulfonated animal oil, preferably sulfonated vegetable oil, further preferably sulfonated rapeseed oil or sulfonated cottonseed oil; the sulfonated oil is an electrolyte, positive charged cations and negative charged anions can be electrolyzed in water, the electrolyzed cations and cations on the surfaces of sludge particles produce an exchange effect, hydrophilic cations adsorbed on the surfaces of the sludge particles are removed, the hydrophilicity of soil is converted into hydrophobicity, and a water film is combined to be thinned, so that the distance between soil particles is reduced, the attractive force is increased, and the shear strength is improved.
In the present invention, triethanolamine (TEA) can accelerate the hydration process by accelerating the formation of Calcium Hydroxide (CH) and ettringite (AFt), which reduces the powder-water interfacial tension in a certain amount range, promoting the contact of the setting agent with water.
In the invention, superfine lithium slag, aluminum sulfate cement, cement kiln dust, nano silicon dioxide, super absorbent resin, vermiculite powder, potassium permanganate, sulfonated oil and triethanolamine are mixed to obtain the sludge curing agent with high mixing amount of solid waste.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The components and amounts used in this example are as follows:
60 parts of superfine lithium slag, 15 parts of 42.5-grade aluminum sulfate cement, 20 parts of cement kiln dust, 5 parts of nano silicon dioxide, 0.2 part of sodium polyacrylate, 3 parts of vermiculite powder, 1 part of potassium permanganate, 2 parts of sulfonated rapeseed oil and 1.5 parts of triethanolamine.
And uniformly mixing the superfine lithium slag, 42.5-grade aluminum sulfate cement, cement kiln dust, nano silicon dioxide, super absorbent resin, vermiculite powder, potassium permanganate, sulfonated rapeseed oil and triethanolamine to obtain the sludge curing agent with high mixing amount of solid waste.
Example 2
The components and amounts used in this example are as follows:
40 parts of superfine lithium slag, 25 parts of 42.5-grade aluminum sulfate cement, 25 parts of cement kiln dust, 10 parts of nano silicon dioxide, 0.15 part of polyacrylamide, 2 parts of vermiculite powder, 1.5 parts of potassium permanganate, 3 parts of sulfonated cottonseed oil and 2 parts of triethanolamine.
The preparation process is the same as in example 1, and a sludge curing agent with high solid waste content is obtained.
Example 3
The components and amounts used in this example are as follows:
30 parts of superfine lithium slag, 10 parts of 42.5-grade aluminum sulfate cement, 45 parts of cement kiln dust, 15 parts of nano silicon dioxide, 0.3 part of polyvinyl alcohol, 2 parts of vermiculite powder, 2 parts of potassium permanganate, 4 parts of sulfonated rapeseed oil and 4 parts of triethanolamine.
The preparation process is the same as in example 1, and a sludge curing agent with high solid waste content is obtained.
Example 4
The components and amounts used in this example are as follows:
55 parts of superfine lithium slag, 10 parts of 42.5-grade aluminum sulfate cement, 30 parts of cement kiln dust, 5 parts of nano silicon dioxide, 0.1 part of sodium polyacrylate, 4 parts of vermiculite powder, 3 parts of potassium permanganate, 1 part of sulfonated cottonseed oil and 2.5 parts of triethanolamine.
The preparation process is the same as in example 1, and a sludge curing agent with high solid waste content is obtained.
Example 5
The components and amounts used in this example are as follows:
45 parts of superfine lithium slag, 20 parts of 42.5-grade aluminum sulfate cement, 25 parts of cement kiln dust, 10 parts of nano silicon dioxide, 0.35 part of polyacrylamide, 1 part of vermiculite powder, 2 parts of potassium permanganate, 5 parts of sulfonated rapeseed oil and 1 part of triethanolamine.
The preparation process is the same as in example 1, and a sludge curing agent with high solid waste content is obtained.
Example 6
The components and amounts used in this example are as follows:
20 parts of superfine lithium slag, 25 parts of 42.5-grade aluminum sulfate cement, 35 parts of cement kiln dust, 20 parts of nano silicon dioxide, 0.1 part of polyvinyl alcohol, 5 parts of vermiculite powder, 2.5 parts of potassium permanganate, 3.5 parts of sulfonated cottonseed oil and 5 parts of triethanolamine.
The preparation process is the same as in example 1, and a sludge curing agent with high solid waste content is obtained.
Performance testing
Mixing the sludge curing agent with water according to a mass ratio of 1:1, mixing uniformly to obtain a solidified material, adding 200kg of the solidified material into each cubic meter of marine sludge, stirring uniformly, and measuring the unconfined compressive strength of the solidified marine sludge on the 1 st day, the 3 rd day, the 7 th day and the 28 th day respectively after the marine sludge is solidified, wherein the test results are shown in table 1.
TABLE 1 measurement of unconfined compressive Strength of ocean sludge after curing
As can be obtained from Table 1, the sludge curing agent with high solid waste content is used for curing marine sludge, the unconfined compressive strength of the cured marine sludge can reach 3-5 MPa in 7 days, and the unconfined compressive strength of the cured marine sludge can reach 7-9 MPa in 28 days, and compared with the traditional curing agent, the curing agent has excellent curing effect.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. The sludge curing agent with high solid waste mixing amount is characterized by comprising the following components in parts by weight:
20-60 parts of superfine lithium slag, 5-20 parts of aluminum sulfate cement, 10-45 parts of cement kiln dust, 5-20 parts of nano silicon dioxide, 0.1-0.35 part of super absorbent resin, 1-5 parts of vermiculite powder, 1-5 parts of potassium permanganate, 1-5 parts of sulfonated oil and 1-5 parts of triethanolamine.
2. The sludge curing agent with high solid waste content as claimed in claim 1, wherein the ultra-fine lithium slag is produced by the process of producing lithium carbonate, and the specific surface area of the ultra-fine lithium slag is not less than 800m 2 Per kg, siO in the superfine lithium slag 2 And Al 2 O 3 The total content of (2) is more than or equal to 70 percent.
3. A sludge curing agent with high levels of solid waste as claimed in claim 1 or 2 wherein the aluminium sulphate cement comprises 42.5 grade cement.
4. The sludge curing agent with high solid waste content according to claim 3, wherein the specific surface area of the nano silica is 80-240 m 2 Kg of SiO in the nano silicon dioxide 2 The content of (2) is more than or equal to 99 percent.
5. The sludge curing agent with high solid waste content as claimed in claim 4, wherein the super absorbent resin comprises one or more of sodium polyacrylate, polyacrylamide and polyvinyl alcohol.
6. The sludge curing agent with high solid waste content according to claim 5, wherein the particle size of the vermiculite powder is more than or equal to 200 μm.
7. The sludge curative with high levels of solid waste as claimed in claim 1, wherein the sulphonated oil comprises sulphonated vegetable oil and/or sulphonated animal oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410200073.9A CN117776638A (en) | 2024-02-23 | 2024-02-23 | Silt curing agent with high mixing amount of solid waste |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410200073.9A CN117776638A (en) | 2024-02-23 | 2024-02-23 | Silt curing agent with high mixing amount of solid waste |
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| CN105236914A (en) * | 2015-08-28 | 2016-01-13 | 黄梁艳 | Soil curing agent |
| KR20210074783A (en) * | 2019-12-12 | 2021-06-22 | 주식회사 포스코 | Construction materials using lithium residue |
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| CN117303808A (en) * | 2023-09-27 | 2023-12-29 | 成都高速公路建设开发有限公司 | Soft soil curing agent utilizing lithium slag, preparation method and application thereof |
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