Method for manufacturing integrated eco-friendly snow removal agent securing rapidity and long lasting of deicing, corrosion inhibition of steel material, and whitening inhibition ability through integration of magnesium chloride, sodium chloride, and corrosion inhibitor

An integrated eco-friendly deicer is manufactured by compressing sodium chloride, magnesium chloride, and sodium hexametaphosphate with glycerin, addressing corrosion and whitening issues, ensuring rapid deicing and environmental sustainability.

WO2025146992A1PCT designated stage expired Publication Date: 2025-07-10H CHEM CO LTD
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Patent Information

Application Number
PCT/KR2024/020767
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-01-04
Filing Date
2024-12-20
Publication Date
2025-07-10

AI Technical Summary

Technical Problem

Current deicing agents using calcium chloride and sodium chloride cause corrosion, environmental pollution, and unsightly whitening, and are difficult to store and reuse due to hygroscopicity, leading to high social and environmental costs.

Method used

A method of manufacturing an integrated eco-friendly deicer by compressing sodium chloride, magnesium chloride, and sodium hexametaphosphate into a single granule, with the addition of glycerin, to ensure rapid and continuous deicing, corrosion inhibition, and efflorescence suppression.

Benefits of technology

The integrated deicer achieves rapid and continuous deicing, inhibits corrosion, suppresses efflorescence, and meets eco-friendly certification standards without causing dust or clumping, while being stable for storage and use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a method for manufacturing an integrated eco-friendly snow removal agent securing rapidity and long lasting of deicing, corrosion inhibition of a steel material, and whitening inhibition ability through the integration of magnesium chloride, sodium chloride, and corrosion inhibitor, wherein the method allows for excellent snow removal effects, such as deicing, long lasting, rapidity, and re-freezing inhibition, as well as minimizes the impact on the ecological environment by using eco-friendly magnesium chloride instead of highly toxic calcium chloride. Particularly, the snow removal agent of the present invention is integrally manufactured by compression molding of snow removal agent components, so that a highly deliquescent material and a non-deliquescent material are uniformly molded in grains, thereby suppressing road whitening caused by non-deliquescent sodium chloride or the like. Furthermore, the snow removal agent of the present invention is convenient to use due to the ability to be distributed with a uniform particle size and shape after passing through a screening device, avoids hardening even when stored for a predetermined period of time by maintaining the surface moisture content at 0.4% or less, and exhibits enhanced mechanical strength and suppressed dust generation through glycerin coating.
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Description

A method for manufacturing an integrated eco-friendly deicing agent that combines magnesium chloride, sodium chloride, and a corrosion inhibitor to ensure rapid and continuous deicing, corrosion inhibition of steel, and efflorescence inhibition.

[0001] The present invention relates to a method for manufacturing an integrated eco-friendly deicing agent that secures rapid and continuous deicing and corrosion inhibition of steel materials and suppresses efflorescence by integrating magnesium chloride, sodium chloride, and a corrosion inhibitor, and more specifically, to a method for manufacturing an integrated eco-friendly deicing agent that not only has excellent deicing effects such as deicing, continuous, rapid-acting, and re-freezing inhibition effects, but also minimizes the impact on the ecological environment by using environmentally friendly magnesium chloride instead of highly toxic calcium chloride.

[0002] In winter, when snow falls nationwide and road travel becomes difficult due to ice formation, the most important thing is to maintain smooth road conditions through snow removal. In particular, heavy snowfall in winter causes traffic paralysis, and as society becomes more sophisticated, the economic damage caused by traffic paralysis is also rapidly increasing. Therefore, the use of snow removal agents for quick and clean snow removal during heavy snowfall is greatly increasing.

[0003] Deicing agents lower the freezing point of snow so that it melts without freezing. Mainly calcium chloride (CaCl2) or sodium chloride (NaCl, salt) are used.

[0004] Among the solid de-icing agents currently used in Korea, mixed de-icing agents that mix calcium chloride and sodium chloride are widely used. De-icing agents that mix calcium chloride and sodium chloride contain chloride ions (Cl - ) reacts with iron (Fe) to corrode automobiles, steel structures, etc., and causes various side effects such as potholes on roads by continuously infiltrating water into the asphalt surface and causing it to thaw when frozen, thus threatening safety.

[0005] According to statistics from the Korea Expressway Corporation, the annual cost of repairing and reinforcing highways, including potholes, is approximately 1.4 trillion won, which shows the severity of this problem.

[0006] Furthermore, according to data released by the National Institute of Forest Science, when calcium chloride is dissolved in water or absorbed into the soil, it causes water pollution and soil alkalinization, and causes damage to the environment by hindering plant growth, such as withering vegetation along the road due to physical dehydration and reduced photosynthetic ability caused by osmotic imbalance caused by salt accumulation.

[0007] After snow removal, the roads experience a whitening phenomenon, where calcium chloride among the mixed components melts first, followed by sodium chloride. This whitening leaves behind sodium chloride, which is not decomposable, and causes efflorescence. This whitening of the sodium chloride residue on the road is not only unsightly, but also causes numerous side effects, such as corrosion of vehicles and guide rails, damage to concrete surfaces, stunted growth of street trees, and respiratory problems for pedestrians. In particular, when sodium chloride is finely powdered, it flies away with heavy metals on the road, and the pollutant remains on the road until it is completely washed away with water, etc. Statistics show that the social indirect cost of using chloride-based deicing agents is four times the cost of spraying the agent. Therefore, the industry is continuously making efforts to develop eco-friendly deicing agents to solve the problems of deicing agents that contain chloride as a main ingredient.

[0008] In addition, in winter, it is necessary to always stockpile and store ready-to-use deicing agents in order to immediately respond to road icing due to unexpected heavy snow or extreme cold. However, due to the hygroscopicity and moisture content of chloride-based deicing agents, they harden like rocks after a certain period of time, making it difficult to store sufficient quantities of materials as disaster preparedness supplies. In addition, since the hardened deicing agents must be crushed and reused or disposed of as waste, they lose their function as immediate disaster preparedness supplies, and there are problems such as environmental pollution and indirect social costs incurred due to the additional waste disposal costs.

[0009] The purpose of the present invention is to provide a method for manufacturing an integrated eco-friendly de-icing agent, which comprises the steps of compressing and molding a granule by mixing sodium chloride, magnesium chloride (MgCl2), and sodium hexametaphosphate ((NaPO3)6, SHMP) in a specific ratio to solve the above-mentioned problem, and applying glycerin.

[0010] Another object of the present invention is to provide an eco-friendly deicing agent which is manufactured in one piece by the above-mentioned eco-friendly deicing agent manufacturing method, so that when sprayed in large quantities on a road, without using any calcium chloride, it exhibits deicing effects such as deicing performance, durability, fast-acting, and re-freezing inhibition that exceed the eco-friendly certification standards, and further solves the side effects of existing deicing agents such as toxicity, low deicing effect, whitening phenomenon, and clumping phenomenon.

[0011] One aspect of the present invention comprises the steps of (a) adjusting the speed control motor of the raw material input unit for each raw material to input and stir sodium chloride (NaCl), magnesium chloride (MgCl2), and sodium hexametaphosphate ((NaPO3)6, SHMP) into a mixer, (b) crushing the stirred raw materials into a size of 0.6 to 2 mm in a crusher, (c) feeding the crushed powder into six specially manufactured rolling forming rollers and compressing them, (d) recovering and sorting particles having a particle size of less than 0.6 mm or greater than 13.2 mm using a mesh net of 0.6 mm and 13.2 mm, (e) feeding the particles having a particle size of less than 0.6 mm and greater than 13.2 mm, which are selected in step (d), back into the rolling forming rollers of step (c) and re-compressing them, (f) applying glycerin to the snow melting agent that has been selected in step (d), (c) The rolling forming roller of step (c) is characterized in that it is manufactured so that the mixed and crushed materials are uniformly distributed into the forming grooves formed in each forming roller and then formed into a new integral compressed granule shape and discharged, and a method for manufacturing an integrated eco-friendly deicing agent is provided by integrating magnesium chloride, sodium chloride, and a corrosion inhibitor, thereby ensuring rapid and continuous deicing and corrosion inhibition of steel even when sprayed in large quantities on a road, and suppressing efflorescence.

[0012] At this time, the raw material input unit is composed of a screw-type conveying device whose rotation speed is controlled by an inverter motor, and serves to input each raw material into a stirrer, and the degree to which the raw material is input into the stirrer can be controlled by adjusting the speed of the inverter motor.

[0013] A specific city for this is illustrated in registered patent No. 10-2083307, but is not limited to this form.

[0014] At this time, the sodium chloride may be in the shape of beads having a size of 3 to 10 mm, and the magnesium chloride may be in the shape of beads having a size of 3 to 15 mm, but is not limited thereto.

[0015] Specifically, the rolling forming roller of the above step (c) may be manufactured to be able to crush the input mixed material and discharge it in the form of integral granules so that all materials are uniformly distributed through the forming grooves formed in each forming roller, and more specifically, the roller disclosed in Korean Patent No. 10-2083307 may be used, but is not limited thereto.

[0016] Another aspect of the present invention provides an eco-friendly deicer manufactured by the above manufacturing method.

[0017] Specifically, the above-mentioned integrated eco-friendly deicing agent is manufactured by integrating magnesium chloride, sodium chloride, and a corrosion inhibitor in a specific ratio without using calcium chloride, thereby realizing rapid and continuous deicing performance, suppressing whitening, and preventing clumping.

[0018] In the present invention, the above “whitening phenomenon” is used to mean a phenomenon in which a non-dispersible component, such as sodium chloride, among the deicing agents sprayed on the road does not dissolve and remains, causing the road to turn white and dust to fly, but is not limited to the above-mentioned content and can be applied by appropriate modification as needed.

[0019] In the present invention, sodium chloride does not have decomposition properties and does not dissolve in moisture in the air but must be dissolved in the surrounding water. If it exists alone, it has no initial ice-melting effect below -8°C, but when combined with magnesium chloride, the eutectic point is lowered, so it can exhibit ice-melting performance even at -21°C. In particular, since it has very low solubility (35g / 100ml), it melts slowly, has good sustainability, and is inexpensive, so the higher the sodium chloride content, the better. However, if it is alone, it causes efflorescence and does not exhibit ice-melting performance at extremely low temperatures of about -15°C, so an appropriate ratio with other snow-removing ingredients is required.

[0020] Furthermore, the magnesium chloride in the present invention exhibits excellent deliquescent properties, absorbing moisture from the air even in the absence of surrounding water, leading to self-dissolution. It also exhibits rapid absorption and rapid efficacy upon reaction with surrounding water. Furthermore, due to its freezing point lowering effect, it exhibits excellent melting and long-lasting properties even at temperatures as low as -33°C.

[0021] Unlike calcium chloride, magnesium chloride has less skin toxicity and acute inhalation toxicity to humans, and is less corrosive to steel, so a higher magnesium chloride content is more environmentally friendly. However, it is expensive and hardens easily, so an appropriate ratio is important.

[0022] In the present invention, magnesium chloride is contained in an amount of 120 to 130 parts by weight relative to 100 parts by weight of sodium chloride, and more preferably, 125 parts by weight is added to produce the product, thereby demonstrating a level of melting property and sustainability that exceeds environmentally friendly standards.

[0023] Furthermore, the integrated eco-friendly de-icing agent according to the present invention has the effect of weakening the decomposition property of the surface area that comes into contact with moisture in the air during the process of crushing raw materials and then compressing and molding them into an integrated granular form, thereby enabling the de-icing agent to be manufactured with a surface moisture content of 0.4% or less as a finished product.

[0024] That is, while most of the deicing agents on the market only meet the above moisture content standard and contain moisture at a level or higher that causes clumping, the deicing agent of the present invention can be manufactured to have a surface moisture content of 0.4% or less, and is characterized by being able to fundamentally prevent clumping.

[0025] In addition, in the present invention, sodium hexametaphosphate is contained in an amount of 2 to 10 parts by weight, specifically 3 to 8 parts by weight, and more specifically 4 to 7 parts by weight, relative to 100 parts by weight of the sodium chloride, and forms a phosphate film on the surface of the steel material to create a corrosion-preventing layer to prevent further corrosion, thereby providing a corrosion-preventing effect. However, if the content of sodium hexametaphosphate is less than 2 parts by weight, the effect is minimal, and if the content of sodium hexametaphosphate exceeds 6 parts by weight, the water-insoluble matter increases due to reaction by-products (complex salts), so that an appropriate ratio is required. In the present invention, the content of sodium hexametaphosphate is adjusted as described above to satisfy the EL610 standard.

[0026] In addition, the glycerin is contained in an amount of 1 to 7 parts by weight, specifically 2 to 6 parts by weight, and most specifically 3 to 5 parts by weight, and not only suppresses the deicing agent from being dusted and blown away, but also improves the mechanical strength of the manufactured deicing agent and suppresses clumping. However, if the content of the glycerin is less than 1 part by weight, the effect is minimal, and if the content of the glycerin exceeds 5 parts by weight, the effect is not significantly improved, and the melting performance of the deicing agent may actually deteriorate, which is not preferable.

[0027] The integrated eco-friendly de-icing agent of the present invention is characterized by satisfying the eco-friendly de-icing agent certification standards (EL610) such as heavy metals, steel corrosion, water insolubility, ice melting performance (speed and duration), and ecosystem pollution by analyzing the pros and cons of the above-mentioned de-icing ingredients, while suppressing dust, whitening, and clumping, which were problems of existing de-icing agents.

[0028] The method for manufacturing an integrated eco-friendly de-icing agent according to the present invention comprises the steps of composing sodium chloride, magnesium chloride and sodium hexametaphosphate in a specific ratio, integrating them through compression molding, and applying glycerin, thereby providing an integrated eco-friendly de-icing agent that simultaneously exhibits the complex effects of ensuring rapid and sustained de-icing and inhibiting corrosion of steel and suppressing efflorescence.

[0029] In addition, the integrated eco-friendly deicing agent manufactured by the manufacturing method of the present invention exhibits deicing effects such as melting, durability, rapid effect, and re-freezing inhibition that exceed the eco-friendly certification standards without using any calcium chloride, and further exhibits an excellent composite effect that does not cause dust, whitening, and clumping, which are inherent in existing deicing agents.

[0030] Figure 1 is a test report showing the melting performance of an integrated eco-friendly deicer manufactured through the present invention, which was measured by requesting the Korea Testing & Research Institute for Chemical Industry.

[0031] Figure 2 is a test report showing the melting performance of an eco-friendly deicer manufactured through Example 1 and Comparative Examples 2 and 4 of the present invention, which was measured by requesting the Korea Testing & Research Institute for Chemical Industry.

[0032] Figures 3 to 5 are test results, test result reports, and photographs obtained by requesting the Korea Testing & Research Institute for Chemical Industry to measure whether or not an efflorescence phenomenon occurred in eco-friendly deicing agents manufactured through Example 1 and Comparative Examples 2 and 4 of the present invention.

[0033] Figure 6 is a test report showing the water-insoluble content of an integrated eco-friendly deicing agent manufactured through Example 1 of the present invention, which was measured by requesting the Korea Testing & Research Institute for Chemical Industry.

[0034] Hereinafter, the present invention will be described in detail by way of examples. However, the following examples are only illustrative of the present invention, and the present invention is not limited to the following examples.

[0035]

[0036] <Example 1> Manufacturing process of an integrated eco-friendly deicer

[0037] Briefly describing the manufacturing process of the eco-friendly de-icing agent of the present invention, it is manufactured by mixing de-icing agent components in a specific ratio and then grinding, compressing, and sorting, and is characterized by all components constituting the de-icing agent being uniformly distributed in a specific ratio and existing in the form of granules of a certain size. It can be accepted as a fact self-evident to those skilled in the art that the effects described below can be guaranteed only when manufactured by each manufacturing process described below.

[0038] First, the speed control motor of the raw material input section was adjusted to 26 rpm, and 100 parts by weight of sodium chloride was input into the mixer and stirred.

[0039] Afterwards, the speed control motor of the raw material input section was adjusted to 29 rpm so that 125 parts by weight of magnesium chloride was input into the mixer, and the speed control motor of the raw material input section was adjusted to 7 rpm so that 3 to 8 parts by weight, more specifically 4 to 7 parts by weight, of sodium hexametaphosphate was input into the mixer, and the raw materials were mixed.

[0040] The above stirred raw material was fed into a crusher and crushed into particle sizes of 0.6 to 2 mm, and the crushed powder was fed into a self-developed rolling forming roller to perform compression molding. The rolling forming roller is characterized by crushing the mixed material fed into it and forming it into granules through the forming grooves formed in each forming roller so that all materials are uniformly distributed and discharged.

[0041] Afterwards, using a mesh net of 0.6 mm and 13.2 mm, particles with a particle size of less than 0.6 mm or greater than 13.2 mm were re-rolled and molded through a powder recovery process, and then re-compressed.

[0042] The selected de-icing agent ensures particle uniformity with less dispersion than the EL610 standard (0.6 to 13.2 mm) by ensuring that more than 90% of the total particles are distributed in the size range of 1.2 mm to 10.0 mm.

[0043] After the above selection process is completed, 2 to 6 parts by weight of glycerin, most specifically 3 to 5 parts by weight, is added to a mixer and mixed with the above-mentioned selected deicing agent to produce an integrated eco-friendly deicing agent.

[0044]

[0045] <Comparative Example 1>

[0046] Excellent procurement of snow removal agents from other companies.

[0047] Comparative Example 2

[0048] The raw materials were mixed in the same ratio as in Example 1, but without going through the separate crushing and compression molding processes as in Example 1, they were crushed to a size generally suitable for spreading on roads (particle size of about 1 cm), and then mixed evenly using a mixer to produce a deicing agent.

[0049] <Comparative Example 3>

[0050] A deicing agent in the form of a finely ground powder was manufactured using the same process as Example 1, except that the compression molding process was excluded.

[0051] <Comparative Example 4>

[0052] A deicer was manufactured in the same manner as in Example 1 above, but without mixing glycerin.

[0053] Comparative Example 5

[0054] A deicer was manufactured by proceeding in the same manner as in Example 1 above, but without mixing glycerin, mixing 100 parts by weight of magnesium chloride.

[0055]

[0056] The melting performance of the eco-friendly deicing agents manufactured through the above Example 1 and Comparative Examples 1 to 5 was measured and shown in Table 1 and Figure 1 below.

[0057] {However, the melting performance of the eco-friendly deicing agent was measured using the test method of EM502-3: 2014 by requesting the Korea Testing & Research Institute for Chemical Industry (KTR).}

[0058] Melting efficiency (%) -12℃, 120 minutes -15℃, 120 minutes Example 1121121 Comparative example 199100 Comparative example 2108106 Comparative example 3120121 Comparative example 4121121 Comparative example 5105104

[0059] As shown in Table 1 above and Figure 1 below, it can be seen that the integrated eco-friendly deicing agent manufactured through Example 1 of the present invention exhibits excellent deicing efficiency under all conditions of a temperature of -15 to -12°C and an application time of 15 to 120 minutes. On the other hand, in the case of Comparative Examples 1 and 5, it can be seen that the deicing efficiency is relatively low because magnesium chloride is not contained or is used in small amounts.

[0060] Additionally, in the case of Comparative Example 2, it can be seen that the particle uniformity of the deicing agent is low, which reduces the melting efficiency.

[0061] In particular, in the case of Comparative Examples 4 and 5, excessive dusting occurred during the process of spraying the deicing agent, making it difficult to remove snow.

[0062]

[0063] In addition, the melting performance of the eco-friendly deicing agent manufactured through Example 1 and Comparative Example 2 (Companie A, mixed type) and Comparative Example 4 (Companie B integrated type) was measured and shown in Figure 2 below.

[0064] {However, the melting performance of the eco-friendly deicing agent was measured using the test method of EM502-3: 2014 by requesting the Korea Testing & Research Institute for Chemical Industry (KTR).}

[0065] As shown in Figure 2 below, it can be seen that the eco-friendly deicing agent manufactured through Example 1 of the present invention exhibits superior deicing efficiency under conditions of a temperature of -15 to -12°C and an application time of 10 minutes compared to the deicing agents manufactured through Comparative Examples 2 and 4.

[0066] In addition, the clumping effect according to the moisture content of the eco-friendly deicing agent manufactured through Example 1 and Comparative Examples 1 to 5 was measured and shown in Table 1 below.

[0067] {However, the influence of clumping according to moisture content was measured by preparing 5 samples of 500 g each of the eco-friendly de-icing agents prepared through Example 1 and Comparative Examples 1 to 5, spraying water on the prepared eco-friendly de-icing agent samples under each experimental condition, mixing them well, placing them in a plastic bag, sealing them, pressing them with a weight of 5 kg, and leaving them in a dryer at 45°C for 24 hours, and then measuring whether there was clumping.

[0068] ○: Completely hardened, △: Some clumping, ×: No clumping}

[0069] Distinction Whitening phenomenon 12 hours passed 15 hours passed Example 1××Comparative example 1△○Comparative example 2△○Comparative example 3×△Comparative example 4××Comparative example 5×△

[0070] As shown in Table 2 above, the integrated eco-friendly deicing agent manufactured through Example 1 of the present invention exhibited only a partial clumping phenomenon even under conditions where the moisture content exceeded 0.4% and was 0.45%, whereas in Comparative Examples 1 to 4, complete hardening occurred under conditions where the moisture content was 0.45%. In particular, in Comparative Examples 2 to 3, complete hardening occurred even under conditions where the moisture content was 0.35% and was less than 0.4%.

[0071] This is because, due to the high solubility of magnesium chloride, one of the components of the deicing agent, when a certain amount of moisture is present, the phenomenon of melting and hardening is repeated by absorbing moisture in a chain reaction, and during the manufacturing process of the integrated deicing agent, a kind of coating film is formed on the surface of the deicing agent due to strong pressure, so that it has a certain resistance to moisture in the outside air.

[0072]

[0073] In addition, the whitening inhibition effect of the deicing agents manufactured through Example 1 and Comparative Examples 1 to 5 was measured and shown in Table 3 below.

[0074] As the number of days with little snowfall increases due to abnormal weather conditions, the frequency of whitening phenomena such as non-dissolving components such as sodium chloride in the sprayed deicing agents remaining undissolved and causing roads to turn white and powder to fly is increasing. Since whitening phenomena that occur require additional costs such as water cleaning, it is becoming important to suppress such whitening phenomena.

[0075] The integrated eco-friendly deicing agent of the present invention is characterized in that it suppresses the efflorescence phenomenon by integrating magnesium chloride with high solubility and sodium chloride with no solubility into a single granule and compressing it, thereby causing a self-dissolving phenomenon.

[0076] In order to confirm the above effect, 1 kg each of the deicing agent manufactured through Example 1 and the deicing agent manufactured through Comparative Examples 1 to 5 was dissolved in 5 L of water, and then the same amount was sprayed on asphalt having the same area, and the occurrence of efflorescence was observed.

[0077] {However, the occurrence of whitening was determined by visually checking the asphalt 12 and 15 hours after spraying.

[0078] ○; Very likely, △; Slightly likely, ×; Not likely

[0079] Distinction Function Rate (%) 0.05 0.25 0.35 0.45 1.0 Example 1 × × × △○ Comparative Example 1 × × △○ - Comparative Example 2 × △○ - Comparative Example 3 × △○ - Comparative Example 4 × × △○ - Comparative Example 5 × × △○ -

[0080] As shown in Table 3 above, a difference could be confirmed after 12 hours from spraying, and a stark difference was confirmed after 15 hours. The deicers manufactured through Comparative Examples 1 and 2 were stained here and there and had severe whitening. In the case of Comparative Example 3, the whitening phenomenon was less than that of Comparative Examples 1 and 2, but it hardened easily and was not easy to spray. In the case of Comparative Example 4, the whitening phenomenon was relatively less, but the spraying process was not smooth due to severe scattering. In the case of Comparative Example 5, not only did the whitening phenomenon occur to some extent, but the scattering was severe and the spraying process was not smooth.

[0081]

[0082] In addition, the occurrence of whitening in the deicing agents manufactured through Example 1 and Comparative Examples 2 and 4 was measured and shown in Figures 3 to 5 below.

[0083] {However, the occurrence of efflorescence was measured by requesting the Korea Testing & Research Institute for Chemical Industry (KTR) and confirmed through the test result report (TBK-2023-010018). As a control group, deicing salt was used. After diluting each of the deicing agent and salt to a 10% aqueous solution, 100 g of the aqueous solution prepared at room temperature was sprayed on the asphalt surface, stored at 45℃ for 60 minutes, and then a method was used to confirm whether efflorescence occurred on the asphalt surface through photography and visual inspection.}

[0084] As shown in Figures 3 to 5 below, it can be seen that the integrated eco-friendly deicer manufactured through Example 1 of the present invention does not cause a whitening phenomenon.

[0085]

[0086] In addition, the water-insoluble content of the integrated eco-friendly deicing agent manufactured through the above Example 1 was measured and shown in Figure 6 below.

[0087] {However, the water-insoluble content of the integrated eco-friendly de-icing agent was measured using the test method of KS H 7101:2002 by requesting the Korea Testing & Research Institute for Chemical Industry (KTR).}

[0088] As shown in Figure 6 below, it can be seen that the integrated eco-friendly de-icing agent manufactured through Example 1 of the present invention exhibits excellent water solubility with a very low water-insoluble content of 0.01%.

[0089]

[0090] Therefore, the method for manufacturing an eco-friendly deicing agent that suppresses whitening and caking caused by sodium chloride according to the present invention provides an eco-friendly deicing agent by including the steps of compressing sodium chloride, magnesium chloride, and sodium hexametaphosphate into an integrated form and applying glycerin.

[0091] In addition, it provides an eco-friendly deicing agent that exhibits deicing effects such as melting, durability, fast-acting, and re-freezing inhibition that exceed the eco-friendly certification standards without using calcium chloride, and furthermore, does not cause dust, whitening, or caking that are inherent in existing deicing agents.

Claims

1. (a) A step of controlling the speed control motor of the raw material input section for each raw material and inputting and stirring sodium chloride (NaCl), magnesium chloride (MgCl2), and sodium hexametaphosphate ((NaPO3)6, SHMP) into the mixer. (b) a step of grinding the above stirred raw material into a size of 0.6 to 2 mm in a grinder; (c) A step of compressing and molding the crushed powder by putting it into six specially manufactured rolling molding rollers. (d) A step of recovering and selecting particles with a particle size of less than 0.6 mm or greater than 13.2 mm using a mesh net of 0.6 mm and 13.2 mm; (e) A step of re-compressing and forming the particles with a size of less than 0.6 mm and greater than 13.2 mm selected in the above step (d) by putting them into the rolling forming roller of step (c). (f) a step of applying glycerin to the deicing agent selected in step (d); The rolling forming roller of the above step (c) is characterized in that it is manufactured so that the mixed and crushed materials can be uniformly distributed into the forming grooves formed in each forming roller and then formed into a new granular shape and discharged. A method for manufacturing an integrated eco-friendly deicing agent that secures rapid and continuous melting and corrosion inhibition and efflorescence inhibition of steel by integrating magnesium chloride, sodium chloride, and a corrosion inhibitor.

2. In paragraph 1, Characterized in that 120 to 130 parts by weight of the magnesium chloride, 2 to 10 parts by weight of the sodium hexametaphosphate, and 1 to 7 parts by weight of the glycerin are mixed relative to 100 parts by weight of the sodium chloride. A method for manufacturing an integrated eco-friendly deicing agent that secures rapid and continuous melting and corrosion inhibition and efflorescence inhibition of steel by integrating magnesium chloride, sodium chloride, and a corrosion inhibitor.

3. An integrated eco-friendly snow removal agent, characterized in that it is manufactured by a method for manufacturing an integrated eco-friendly snow removal agent according to any one of claims 1 to 2.

4. In paragraph 3, The above integrated eco-friendly snow removal agent is an integrated eco-friendly snow removal agent characterized in that 90% or more of the particles have a particle size of 1.2 to 10.0 mm and a surface moisture content of 0.4 wt% or less.

Citation Information

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