CN114292625B - Road snow-melting agent and preparation method and application thereof - Google Patents
Road snow-melting agent and preparation method and application thereof Download PDFInfo
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- CN114292625B CN114292625B CN202111669477.5A CN202111669477A CN114292625B CN 114292625 B CN114292625 B CN 114292625B CN 202111669477 A CN202111669477 A CN 202111669477A CN 114292625 B CN114292625 B CN 114292625B
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- 238000002844 melting Methods 0.000 title claims abstract description 117
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 106
- 150000003839 salts Chemical class 0.000 claims abstract description 76
- 239000003381 stabilizer Substances 0.000 claims abstract description 63
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 59
- 238000005469 granulation Methods 0.000 claims abstract description 53
- 230000003179 granulation Effects 0.000 claims abstract description 53
- 230000008018 melting Effects 0.000 claims abstract description 42
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims abstract description 9
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 9
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 239000010902 straw Substances 0.000 claims description 81
- 239000000843 powder Substances 0.000 claims description 67
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 23
- 239000011777 magnesium Substances 0.000 claims description 23
- 229910052749 magnesium Inorganic materials 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 20
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical group [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 239000011575 calcium Substances 0.000 claims description 17
- 229910052791 calcium Inorganic materials 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 12
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical group [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 6
- 239000005413 snowmelt Substances 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 230000008014 freezing Effects 0.000 abstract description 8
- 238000007710 freezing Methods 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 238000000576 coating method Methods 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 56
- 239000000126 substance Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000446 fuel Substances 0.000 description 10
- 238000005096 rolling process Methods 0.000 description 10
- 238000005303 weighing Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 240000008042 Zea mays Species 0.000 description 3
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 3
- 150000001804 chlorine Chemical class 0.000 description 3
- 235000005822 corn Nutrition 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000003841 chloride salts Chemical class 0.000 description 2
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 229960001545 hydrotalcite Drugs 0.000 description 2
- 229910001701 hydrotalcite Inorganic materials 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011785 micronutrient Substances 0.000 description 1
- 235000013369 micronutrients Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The invention provides a road snow-melting agent, a preparation method and application thereof, belonging to the field of environment-friendly snow-melting materials. The snow melting material comprises a snow melting raw material and water, wherein the mass ratio of the snow melting raw material to the water is 100: 3-5, wherein the snow melting raw material comprises the following components in parts by weight: 42-48 parts of plant snow melting materials, 41-46 parts of industrial salt, 3-10 parts of a stabilizer, 2-3 parts of a chloride ion wrapping agent and 1-3 parts of a granulation auxiliary agent, wherein the chloride ion wrapping agent is a mixture of magnesium oxide, aluminum nitrate and sodium carbonate. The industrial salt plays a role in melting ice and removing snow; 3-10 parts of stabilizer can reach the snow melting freezing point in cold environment and keep relatively low price; the chloride ion coating agent mainly plays a role in coating chloride ions in the snow-melting agent, and after the chloride ions in the snow-melting agent are fully melted to form a solution containing the chloride ions, the chloride ions in the solution can be fully coated by the coating agent, so that the corrosion of the chloride ions on peripheral facilities, vegetation and soil of a highway is restrained and passivated.
Description
Technical Field
The invention relates to the technical field of environment-friendly snow-melting materials, in particular to a road snow-melting agent and a preparation method and application thereof.
Background
The ice and snow melting in winter is a necessary means for ensuring the driving safety of roads in cold regions, and the existing ice and snow removing methods for roads comprise human/mechanical ice removing, microwave ice removing, snow removing and ice melting by spreading a snow melting agent, and the like. In all snow removal measures, the spreading of the snow-melting agent has the advantages of simple operation, low cost, high snow removal speed, good effect and the like, and the spreading of the snow-melting agent is generally divided into three categories according to different components of the snow-melting agent: chloride salt inorganic type, non-chloride salt organic type, and sustained release agent. The inorganic product with chlorine salt as main component has great storage amount, low cost and good snow melting effect, and plays an irreplaceable role in ensuring road smoothness and public safety during snowfall. However, a large number of applications also show that the chlorine salt snow-melting agent corrodes the automobile, road facilities and roadside vegetation soil while removing snow, so that the replacement rate of the guardrail along the road reaches 15% within 10 years, the service life of a bridge and culvert cement concrete structure is reduced by more than 30%, the maintenance cost of the automobile is improved by 3%, the death rate of the roadside greening vegetation is increased by about 10%, the environmental protection performance is poor, and the chlorine salt snow-melting agent is not suitable for extremely cold regions with the lowest temperature lower than-25 ℃.
Disclosure of Invention
In view of the above, the present invention aims to provide a road snow-melting agent, a preparation method and an application thereof. The road snow-melting agent provided by the invention not only can be suitable for areas with the air temperature lower than-25 ℃, but also has low corrosivity.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a road snow-melting agent, which comprises a snow-melting raw material and water, wherein the mass ratio of the snow-melting raw material to the water is 100: 3-5, wherein the snow melting raw material comprises the following components in parts by weight: 42-48 parts of plant snow melting material, 41-46 parts of industrial salt, 3-10 parts of stabilizer, 2-3 parts of chloride ion wrapping agent and 1-3 parts of granulation auxiliary agent, wherein the chloride ion wrapping agent is a mixture of magnesium oxide, aluminum nitrate and sodium carbonate.
Preferably, the chloride ion coating agent comprises the following components in percentage by mass: 40% of magnesium oxide, 30% of aluminum nitrate and 30% of sodium carbonate.
Preferably, the passing rate of the hydrotalcite intercalation assembly functional material passing through 0.075mm is not less than 80%.
Preferably, the plant snow-melting material comprises straw powder treated by an alcohol solution and plant ash, and the mass percentage content of the straw powder treated by the alcohol solution in the plant snow-melting material is 30-50%.
Preferably, the stabilizer comprises a calcium-based stabilizer and/or a magnesium-based stabilizer.
Preferably, the calcium-based stabilizer is calcium chloride; the magnesium stabilizer is magnesium chloride.
Preferably, the granulation aid is montmorillonite and/or plant starch.
Preferably, the mass content of sodium chloride in the industrial salt is not less than 94.5%.
The invention also provides a preparation method of the road snow-melting agent in the technical scheme, which comprises the following steps:
and (2) stirring the plant snow-melting material, the industrial salt, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent for the first time, mixing the mixture with water, stirring for the second time, and granulating to obtain the road snow-melting agent.
The invention also provides the application of the road snow-melting agent in the technical scheme or the road snow-melting agent prepared by the preparation method in the technical scheme in areas with the air temperature lower than-25 ℃.
The invention provides a road snow-melting agent, which comprises a snow-melting raw material and water, wherein the mass ratio of the snow-melting raw material to the water is 100: 3-5, wherein the snow melting raw material comprises the following components in parts by weight: 42-48 parts of plant snow melting material, 41-46 parts of industrial salt, 3-10 parts of stabilizer, 2-3 parts of chloride ion wrapping agent and 1-3 parts of granulation auxiliary agent, wherein the chloride ion wrapping agent is a mixture of magnesium oxide, aluminum nitrate and sodium carbonate.
In the invention, the industrial salt has the functions of melting ice and removing snow, but serious erosion and pollution can be caused to peripheral facilities and the soil environment when the content of the industrial salt is too high, and the snow melting efficiency can be influenced when the content of the industrial salt is too low, so that the content of the industrial salt in the snow melting agent is reasonably controlled, and the influence of the industrial salt on the peripheral environment facilities is slowed down to the greatest extent on the premise of effectively melting snow; the using amount of the stabilizer is too much, the manufacturing cost is high, the using amount is small, the snow melting freezing point is not enough, 3-10 parts of the stabilizer can reach the snow melting freezing point in a cold environment (minus 25 ℃), and the price is kept low; the chloride ion coating agent mainly plays a role in coating chloride ions in the snow-melting agent, and after the chloride ions in the snow-melting agent are fully melted to form a solution containing the chloride ions, the chloride ions in the solution can be fully coated by the coating agent, so that the corrosion of the chloride ions on peripheral facilities, vegetation and soil of a highway is restrained and passivated, and the environment-friendly effect is achieved; the granulation auxiliary agent can increase the viscosity of the snow-melting agent and promote granulation of the snow-melting agent.
Further, the stabilizing agent comprises a calcium stabilizing agent and/or a magnesium stabilizing agent, the calcium stabilizing agent is calcium chloride, the magnesium stabilizing agent is magnesium chloride, the calcium chloride and the magnesium chloride play a role in supplementing fertilizers for the land to achieve the effect of fertilizing, and the calcium chloride and the magnesium chloride increase the viscosity of the materials to play a role in granulating the snow melting agent.
Furthermore, the plant snow-melting material comprises straw powder treated by the alcohol solution and plant ash, wherein the straw powder contains plant starch, and reacts with water in the alcohol solution in the drying process to generate alcohol; the plant ash mainly plays two roles, namely assisting in snow melting, and because the carbon content of the plant ash is high, the plant ash covers the surface of a snow field, so that the light energy can be fully absorbed, and the plant ash plays a role in assisting in snow melting; and secondly, softening the soil, supplementing K inorganic elements and adding fertilizers to the roadside soil.
The road snow-melting agent provided by the invention has good environmental protection performance, realizes the recycling of materials, reduces the corrosivity to steel by 15%, and reduces the pollution rate to peripheral soil by more than 50%; the plant snow-melting material is recycled, can play a dual role of snow melting and fertilization, has the snow melting capacity improved by 5-10 percent compared with snow-melting salt (industrial salt), has the freezing point reaching-25 ℃, and is suitable for cold regions; low cost and large-scale popularization and application.
Detailed Description
The invention provides a road snow-melting agent, which comprises a snow-melting raw material and water, wherein the mass ratio of the snow-melting raw material to the water is 100: 3-5, wherein the snow melting raw material comprises the following components in parts by weight: 42-48 parts of plant snow melting material, 41-46 parts of industrial salt, 3-10 parts of stabilizer, 2-3 parts of chloride ion wrapping agent and 1-3 parts of granulation auxiliary agent, wherein the chloride ion wrapping agent is a mixture of magnesium oxide, aluminum nitrate and sodium carbonate.
In the present invention, unless otherwise specified, all the raw materials used are commercially available in the art.
The road snow-melting agent provided by the invention preferably comprises 2 parts of hydrotalcite intercalation assembly functional material.
In the invention, the chloride ion coating agent comprises the following components in percentage by mass: 40% of magnesium oxide, 30% of aluminum nitrate and 30% of sodium carbonate. In the invention, the chloride ion coating agent does not react with salt in a solid state, and can coat chloride ions in liquid after contacting with the liquid, so that the chloride ions in the snow melting agent are restrained and passivated after fully melting snow, and the corrosion of the snow melting agent to road facilities and environment is reduced.
The road snow-melting agent provided by the invention preferably comprises 45-47 parts of plant snow-melting materials, and more preferably 46 parts.
In the invention, the plant snow-melting material preferably comprises straw powder treated by an alcohol solution and plant ash, and the mass percentage content of the straw powder treated by the alcohol solution in the plant snow-melting material is preferably 30-50%.
In the present invention, the alcohol solution-treated straw powder is preferably prepared by a method comprising the following steps:
crushing straws to obtain straw powder;
and spraying an alcohol solution onto the surface of the straw powder, and then performing smoldering and drying in sequence to obtain the straw powder treated by the alcohol solution.
In the present invention, the content of the straw powder having a particle size of less than 0.075mm is preferably not less than 80%.
In the present invention, the straw is preferably corn straw.
In the invention, the alcohol solution is preferably soaking liquid or brewing waste liquid of corn deep processing.
In the present invention, the alcohol solution preferably has a mass concentration of 5% to 20%.
In the invention, the dosage ratio of the alcohol solution to the straw powder is preferably 20mL to 100 g.
In the invention, the temperature of the hair smoldering is preferably 25-30 ℃, and the time is preferably 3-5 days.
The present invention is not particularly limited to the specific manner of drying, and may be performed in a manner known to those skilled in the art. In the present invention, the drying is preferably performed until the water content is 2 to 3%.
In the invention, the main component of the plant ash is potassium carbonate, and the plant ash simultaneously contains calcium, magnesium, silicon, sulfur, iron, manganese, copper, zinc and boron micronutrients, and the straw powder and the plant ash are harmless to the automobile and road infrastructure and environment after melting snow.
In the present invention, the K content in the plant ash is preferably less than 10 wt%, the carbon content is preferably not less than 15 wt%, and the specific surface area is preferably not less than 1500m 2 The water content is preferably not more than 10% by weight.
The road snow-melting agent provided by the invention preferably comprises 4-7 parts of stabilizer, and more preferably 5 parts.
In the present invention, the stabilizer preferably includes a calcium-based stabilizer and/or a magnesium-based stabilizer.
In the present invention, the calcium-based stabilizer is preferably calcium chloride; the magnesium-based stabilizer is preferably magnesium chloride.
The road snow-melting agent provided by the invention preferably comprises 44-45 parts of industrial salt, wherein the industrial salt plays a role in melting ice and removing snow, but serious erosion and pollution to peripheral facilities and a soil environment can be caused by too high content of the industrial salt, and snow-melting efficiency can be influenced by too low content of the industrial salt, so that the content of the industrial salt in the snow-melting agent needs to be reasonably controlled, and the influence of the industrial salt on the peripheral environment facilities is slowed down to the greatest extent on the premise of effective snow melting.
In the present invention, the mass content of sodium chloride in the industrial salt is preferably not less than 94.5%.
In the present invention, the industrial salt preferably contains calcium, magnesium ions and sulfate ions, and the industrial salt is in the form of solid particles at room temperature.
In the present invention, the industrial salt preferably has a moisture content of not more than 4.1% by weight, a water-insoluble content of not more than 0.3% by weight, a total content of calcium and magnesium ions of not more than 0.4% by weight, and a sulfate ion content of not more than 0.5% by weight.
In the present invention, the industrial salt is preferably a secondary or higher industrial salt.
In the present invention, the granulation aid is preferably montmorillonite and/or plant starch.
The invention also provides a preparation method of the road snow-melting agent in the technical scheme, which comprises the following steps:
and (2) stirring the plant snow-melting material, the industrial salt, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent for the first time, mixing the mixture with water, stirring for the second time, and granulating to obtain the road snow-melting agent.
The specific manner of the primary stirring, the secondary stirring and the granulation is not particularly limited in the present invention, and may be any manner known to those skilled in the art.
The invention also provides the application of the road snow-melting agent in the technical scheme or the road snow-melting agent prepared by the preparation method in the technical scheme in areas with the air temperature lower than-25 ℃.
In order to further illustrate the present invention, the following detailed description of the road snow-melting agent and the preparation method and application thereof are provided in conjunction with examples, which should not be construed as limiting the scope of the present invention.
Example 1
Taking the following substances in parts by weight:
46 parts of industrial salt, 48 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 3 parts of calcium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and plant ash are ash content of straw fuel burned in a power plant, the calcium stabilizer is anhydrous calcium chloride, and the chloride ion wrapping agent comprises the following components in percentage by mass: 40% of magnesium oxide, 30% of aluminum nitrate and 30% of sodium carbonate, the granulation auxiliary agent is montmorillonite, and the preparation method of the straw powder comprises the following steps: crushing the straws to 80% with the particle size of less than 0.075mm to obtain straw powder, spraying 100g of the straw powder with 20mL (mass concentration of 5%) of a corn deep-processing soak solution, wherein the straw powder is in a stirring state, then drying at 25 ℃ for 3 days, and finally drying until the water content is 2%.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly mixing again, and performing rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Example 2
Taking the following substances in parts by weight:
45 parts of industrial salt, 48 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 4 parts of magnesium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and plant ash are ash content of the straw fuel burned in the power plant, the magnesium stabilizer is anhydrous magnesium chloride, the granulation auxiliary agent is montmorillonite, and the chloride ion wrapping agent and the straw powder are the same as those in the example 1.
Weighing the substances according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (accounting for the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly stirring again, and carrying out rotary granulation through a rolling and poking granulator to prepare the snow-melting agent.
Example 3
Taking the following substances in parts by weight:
45 parts of industrial salt, 47 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 5 parts of calcium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and the plant ash are ash content of straw fuel burned in a power plant, the calcium stabilizer is anhydrous calcium chloride, the granulation auxiliary agent is montmorillonite, and the chloride ion wrapping agent and the straw powder are the same as those in the embodiment 1.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly mixing again, and performing rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Example 4
Taking the following substances in parts by weight:
44 parts of industrial salt, 48 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 4 parts of magnesium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and plant ash are ash content of the straw fuel burned in the power plant, the magnesium stabilizer is anhydrous magnesium chloride, the granulation auxiliary agent is montmorillonite, and the chloride ion wrapping agent and the straw powder are the same as those in the example 1.
Weighing the substances according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (accounting for the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly stirring again, and carrying out rotary granulation through a rolling and poking granulator to prepare the snow-melting agent.
Example 5
Taking the following substances in parts by weight:
46 parts of industrial salt, 46 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 5 parts of calcium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and plant ash are ash content of the straw fuel burned in the power plant, the calcium stabilizer is anhydrous calcium chloride, the granulation auxiliary agent is montmorillonite, the chloride ion wrapping agent and the straw powder are the same as those in the example 1.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly mixing again, and performing rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Example 6
Taking the following substances in parts by weight:
45 parts of industrial salt, 45 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 7 parts of magnesium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and plant ash are ash content of the straw fuel burned in the power plant, the magnesium stabilizer is anhydrous magnesium chloride, the granulation auxiliary agent is montmorillonite, and the chloride ion wrapping agent and the straw powder are the same as those in the example 1.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly mixing again, and performing rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Example 7
Taking the following substances in parts by weight:
46 parts of industrial salt, 44 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 7 parts of magnesium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and plant ash are ash content of the straw fuel burned in the power plant, the magnesium stabilizer is anhydrous magnesium chloride, the granulation auxiliary agent is montmorillonite, and the chloride ion wrapping agent and the straw powder are the same as those in the example 1.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly mixing again, and performing rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Comparative example 1
Taking the following substances in parts by weight:
100 parts of industrial salt. The technical specifications of the industrial salt are the same as those of example 1.
Comparative example 2
Taking the following substances in parts by weight:
37 parts of industrial salt, 55 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 5 parts of magnesium stabilizer, 2 parts of chloride ion wrapping agent and 1 part of granulation auxiliary agent. The industrial salt is secondary industrial salt, the straw powder and plant ash are ash content of straw fuel burned in a power plant, the magnesium stabilizer is anhydrous magnesium chloride, the granulation auxiliary agent is montmorillonite, and the chloride ion wrapping agent and the straw powder are the same as those in the embodiment 1.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly mixing again, and performing rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Comparative example 3
Taking the following substances in parts by weight:
47 parts of industrial salt, 48 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 2 parts of magnesium stabilizer, 2 parts of chloride ion wrapping agent, 1 part of granulation auxiliary agent and secondary industrial salt, wherein the straw powder and the plant ash are ash of straw fuel combusted in a power plant, the magnesium stabilizer is anhydrous magnesium chloride, the granulation auxiliary agent is montmorillonite, and the chloride ion wrapping agent and the straw powder are the same as those in the example 1.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent) of water, uniformly mixing again, and performing rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Comparative example 4
Taking the following substances in parts by weight:
45 parts of industrial salt, 45 parts of straw powder and plant ash (wherein the mass percentage of the straw powder is 50%), 7 parts of magnesium stabilizer, 1 part of granulation auxiliary agent and chloride-free ion-wrapping agent. The industrial salt is secondary industrial salt, the straw powder and the plant ash are ash content of straw fuel burned in the power plant, and the magnesium stabilizer is anhydrous magnesium chloride.
Weighing the materials according to the parts by weight, uniformly mixing at normal temperature, adding 5 wt% (based on the total mass of the industrial salt, the straw powder, the plant ash, the stabilizer and the granulation auxiliary agent) of water, uniformly stirring again, and then carrying out rotary granulation by using a rolling and poking granulator to prepare the snow-melting agent.
Performance measurement is carried out on the snow melting agents prepared in the embodiments 1-7 and the comparative examples 1-4, and the snow melting capability, the freezing point and the carbon steel corrosion rate of different snow melting agents are measured according to a test method specified in the snow melting agent (GB/T23851-. Other snow melt agent data were extracted for comparison as shown in table 1.
TABLE 1 measurement results of the snow melting agent obtained in examples 1 to 7 and comparative examples 1 to 4
As can be seen from Table 1, the freezing point of the road snow-melting agent provided by the invention is obviously lower than that of industrial salt, which shows that the road snow-melting agent provided by the invention has snow-melting performance superior to that of the industrial agent at low temperature, and the corrosion rate to carbon steel is greatly reduced compared with that of the industrial salt.
As can be seen from comparative examples 1-4, the single industrial salt in the comparative example 1 has high freezing point, limited snow melting capacity and large corrosion rate to carbon steel and corrosion to concrete; comparative examples 2 and 3 are respectively that the snow melting ability and the freezing point were lowered due to a smaller proportion of industrial salt and a smaller proportion of stabilizer; comparative example 4 is free of chloride ion-binding agent, increasing the rate of corrosion of the mixture to carbon steel and to concrete.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention in any way. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. The road snow-melting agent is characterized by specifically comprising a snow-melting raw material and water, wherein the mass ratio of the snow-melting raw material to the water is 100: 3-5, wherein the snow-melting raw material specifically comprises the following components in parts by mass: 42-48 parts of plant snow melting materials, 41-46 parts of industrial salt, 3-10 parts of a stabilizer, 2-3 parts of a chloride ion wrapping agent and 1-3 parts of a granulation auxiliary agent, wherein the chloride ion wrapping agent is a mixture of magnesium oxide, aluminum nitrate and sodium carbonate; the chloride ion coating agent comprises the following components in percentage by mass: 40% of magnesium oxide, 30% of aluminum nitrate and 30% of sodium carbonate; the plant snow-melting material comprises straw powder treated by an alcohol solution and plant ash, and the mass percentage content of the straw powder treated by the alcohol solution in the plant snow-melting material is 30-50%; the stabilizer comprises a calcium stabilizer and/or a magnesium stabilizer, and the calcium stabilizer is calcium chloride; the magnesium stabilizer is magnesium chloride.
2. The road snow melt agent according to claim 1, wherein the granulation aid is montmorillonite and/or vegetable starch.
3. The road snow melt agent as claimed in claim 1, wherein the mass content of sodium chloride in the industrial salt is not less than 94.5%.
4. A method for producing a road snow melt agent as claimed in any one of claims 1 to 3, comprising the steps of:
and (2) stirring the plant snow-melting material, the industrial salt, the stabilizer, the chloride ion wrapping agent and the granulation auxiliary agent for the first time, mixing the mixture with water, stirring for the second time, and granulating to obtain the road snow-melting agent.
5. Use of the road snow melt agent according to any one of claims 1 to 3 or the road snow melt agent prepared by the preparation method according to claim 4 in an area with a gas temperature of less than-25 ℃.
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