KR20160127593A - eco-friendly snow-removing agent composition and snow-removing agent comprising the same - Google Patents
eco-friendly snow-removing agent composition and snow-removing agent comprising the same Download PDFInfo
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- KR20160127593A KR20160127593A KR1020150059227A KR20150059227A KR20160127593A KR 20160127593 A KR20160127593 A KR 20160127593A KR 1020150059227 A KR1020150059227 A KR 1020150059227A KR 20150059227 A KR20150059227 A KR 20150059227A KR 20160127593 A KR20160127593 A KR 20160127593A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/449—Organic acids, e.g. EDTA, citrate, acetate, oxalate
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
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- Y02W30/90—
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The present invention relates to an environmentally friendly snow remover composition and an eco-friendly snow remover containing the same, and more particularly, to an environmentally friendly snow remover composition which is environmentally friendly and has excellent ice-melting performance and freezing prevention performance by utilizing calcined sludge as an industrial by- Based snow removing agent.
Description
The present invention relates to an environmentally friendly snow remover composition and an environmentally friendly snow remover comprising the same, and more particularly, to an environmentally friendly snow remover composition which is not only environmentally friendly but also has excellent ice-melting performance and freeze- Based snow removing agent.
Lime sintering sludge is a kind of industrial by-product that occurs during the process of calcining limestone in a steel mill to produce quicklime. In the process of calcining limestone, limestone is washed to suppress the air permeability in the furnace or the clogging of the pipe. At this time, calcined sludge is generated.
The amount of the calcined sludge is about 100,000 tons or more per year. Although calcined sludge is a useful resource having a component similar to limestone, it can not be recycled in most cases because it is in the state of a minute fraction containing water and having tackiness And the landfill is being processed.
Therefore, the calcined sludge can cause environmental pollution as industrial waste, and it is urgent to develop a technique for recycling calcined sludge.
The calcined sludge was found to be mostly composed of calcium carbonate in terms of chemical components. Based on this point, the present invention has been completed based on the idea of recycling calcined sludge.
In other words, the present invention has been devised to solve the above-mentioned problems, and it is an object of the present invention to provide an environmentally friendly snow remover composition which is not only environmentally friendly but also has excellent ice-melting performance and freezing prevention performance by utilizing calcined sludge as an industrial by- .
The present invention provides an environmentally friendly snow remover composition comprising a calcined sludge reactant produced by reacting calcined sludge with an organic acid, potassium acetate, a freezing temperature improver, and an ice-melting performance-imparting agent.
According to a preferred embodiment of the present invention, the eco-friendly antistatic agent composition of the present invention comprises 20.0 to 40.0 parts by weight of potassium acetate, 6.0 to 12.5 parts by weight of a freezing performance improving agent, To 105 parts by weight.
According to another preferred embodiment of the present invention, the calcined sludge of the eco-friendly antiseptic composition of the present invention comprises calcium carbonate (CaCO 3 ) and a ceramic, wherein the ceramic is selected from the group consisting of silicon oxide (SiO 2 ) And may include at least one of magnesium (MgO), aluminum oxide (Al 2 O 3 ), and iron oxide (Fe 2 O 3 ).
According to another preferred embodiment of the present invention, the calcined sludge of the environmentally friendly snow remover composition of the present invention may have an average particle diameter of 1 to 80 탆.
According to another preferred embodiment of the present invention, the organic acid of the environmentally friendly snow remover composition of the present invention may include at least one of acetic acid, formic acid, gluconic acid, and propionic acid
According to another preferred embodiment of the present invention, the freezing temperature improver of the eco-friendly snow remover composition of the present invention comprises a compound represented by the following general formula (1) and a dispersion solvent, : 0.8 to 1.2 weight ratio.
[Chemical Formula 1]
In Formula 1, R 1 , R 2 and R 3 are each independently H, a C 3 to C 5 branched alkyl group or a C 1 to C 5 linear alkyl group.
According to another preferred embodiment of the present invention, the dispersion solvent of the environmentally friendly snow remover composition of the present invention may be selected from the group consisting of acetone solution, polyethylene glycol solution, sulfuric acid ester solution of C 6 to C 12 alcohol and carboxymethylcellulose carboxymethyl cellulose) solution.
According to another preferred embodiment of the present invention, the melting performance diffuser of the environmentally friendly snow remover composition of the present invention may comprise at least one of glycerin, propylene glycol, sorbitol and tartaric acid.
On the other hand, the present invention provides an eco-friendly snow remover comprising the above-described eco-friendly snow remover composition.
The environmentally friendly snow remover can have a melting performance of 90 to 99% when the freezing temperature is -50 ° C to -32 ° C and the melting performance of sodium chloride (NaCl) is 100%.
The eco-friendly snow remover composition of the present invention and the eco-friendly snow remover including the same are not only eco-friendly, but also excellent in ice-melting performance and freezing prevention performance by utilizing calcined sludge as an industrial by-product.
Hereinafter, the present invention will be described in more detail.
As described above, the amount of calcined sludge generated reaches 100,000 tons or more per year, and calcined sludge is a useful resource having a component similar to that of limestone. However, since it is in a state of a minute fraction containing moisture and stickiness, And the whole landfill is being processed.
Therefore, the calcined sludge can cause environmental pollution as industrial waste, and it is urgent to develop a technique for recycling calcined sludge.
Accordingly, the present invention has been made to solve the above-mentioned problems by providing an eco-friendly snow remover composition comprising a calcined sludge reactant produced by reacting calcined sludge with an organic acid, potassium acetate, a freezing temperature improver, and a melting performance dispersing agent.
Through this, an eco-friendly snow remover that is not only environmentally friendly but also excellent in ice-melting performance and freezing prevention performance can be provided by utilizing calcined sludge as an industrial by-product.
The environmentally friendly snow remover compositions of the present invention comprise a calcined sludge reactant, potassium acetate, a freezing temperature improver, and an ice melt performance dispersant.
The calcined sludge reactant is a compound produced by the reaction between calcined sludge and organic acid, and has the effect of a snow remover. In addition, the calcined sludge reactant is eco-friendly because it does not cause corrosive action and environmental pollution, which is a problem of chlorine-based snow remover as a non-chlorine-based snow remover.
Lime sintering sludge is a kind of industrial by-product that occurs during the process of calcining limestone in a steel mill to produce quicklime. The calcined sludge contains components similar to limestone and contains trace amounts of metal salts.
Specifically, the calcined sludge may contain calcium carbonate (CaCO 3 ).
The calcined sludge may include a ceramic, and the ceramic may be selected from the group consisting of silicon oxide (SiO 2 ), magnesium oxide (MgO), aluminum oxide (Al 2 O 3 ), and iron oxide (Fe 2 O 3 ) And may include one or more species.
More specifically, the calcined sludge may contain calcium carbonate (CaCO 3 ) in an amount of 85 to 98% by weight based on 100% by weight of the total, and may contain 2 to 15% by weight of ceramic in addition to the calcium carbonate.
Therefore, most of the calcined sludge reactant produced by the reaction between calcined sludge and organic acid may be a reaction product of calcium carbonate (CaCO 3 ) and organic acid.
The calcined sludge may have an average particle size of 1 to 80 탆, preferably 1 to 60 탆. If the average particle size of the calcined sludge is less than 1 탆, problems may arise in the process of producing dust. On the other hand, if the average particle size exceeds 80 탆, the reaction time of calcined sludge with organic acid takes a long time, .
The organic acid may include an organic compound having a carboxyl group (-COOH), and may include at least one of acetic acid, formic acid, gluconic acid, and propionic acid, and more preferably acetic acid.
For example, when acetic acid is used as the organic acid, the acetic acid reacts with calcium carbonate (CaCO 3 ), which accounts for most of the components of the sintering sludge sludge, and calcium acetate can be produced as the sintering sludge reactant.
Potassium acetate is included in the environmentally friendly snow remover composition of the present invention to improve the ice melting performance.
The potassium acetate may contain 20.0 to 40.0 parts by weight, preferably 30.0 to 37.5 parts by weight, based on 100 parts by weight of the calcined sludge reactant contained in the environmentally friendly snow remover composition of the present invention. If potassium acetate is added to the calcined sludge reactant 100 If it is contained in an amount of less than 20.0 parts by weight based on the weight of the composition, there may be a problem of deterioration of ice-melting performance, and if it is contained in excess of 40.0 parts by weight, it is economically inefficient.
The freezing performance improving agent may be included in the environmentally friendly snow remover composition of the present invention to improve the freezing performance of the composition itself and may include a compound represented by the following general formula (1) and a dispersion solvent.
[Chemical Formula 1]
In Formula 1, R 1 , R 2, and R 3 are each independently H, a C 3 to C 5 branched alkyl group, or a C 1 to C 5 linear alkyl group.
Specifically, the freezing performance-improving agent may include a compound represented by the following formula (1-1) having a melting point of -65 캜 or lower and a dispersion solvent, thereby lowering the freezing temperature of the environmentally-friendly snowing composition of the present invention.
[Formula 1-1]
The dispersion solvent may be an acetone solution, a polyethylene glycol solution, a sulfuric acid ester solution of C 6 to C 12 alcohol, and a solution of carboxymethylcellulose (carboxymethyl cellulose) solution, and it may preferably include an acetone solution.
The acetone solution means acetone, and may be 100% acetone or may be mixed with other solvent. In this case, water, ethyl acetate, chloroform, hexane and the like can be preferably used as other solvents.
Meanwhile, the freezing temperature improver may include the compound represented by Formula 1 and the dispersion solvent at a weight ratio of 1: 0.8-1.2, preferably 1: 0.9-1.1. If the weight ratio of the compound represented by Formula 1 is 1: If the dispersion solvent is contained in an amount of less than 0.8 part by weight, the non-polar freezing material may not be dispersed in the organic acid, and layer separation may occur. If the content of the freezing material is more than 1.2 parts by weight, May occur.
The freezing temperature improver may include 6.0 to 15.0 parts by weight, preferably 10.0 to 12.5 parts by weight, based on 100 parts by weight of the calcined sludge reactant contained in the environmentally friendly snow remover composition of the present invention. If the freezing temperature improver is a calcined sludge If the amount is less than 6.0 parts by weight based on 100 parts by weight of the reactant, there may be a problem that the freezing temperature of the environmentally friendly snowing agent composition of the present invention can not be sufficiently lowered. If the amount is more than 15.0 parts by weight, solubility of the compound represented by Formula There may be a problem that it is not possible to exhibit freezing prevention performance because flocculation may occur together with aggregation.
The melting performance diffusing agent is contained in the environmentally friendly snow remover composition of the present invention and serves to impose diffusion performance on the melting performance of the composition and may include at least one of glycerin, propylene glycol, sorbitol and tartaric acid, May include at least one of glycerin and propylene glycol.
The melting performance diffusing agent may include 55 to 105 parts by weight, preferably 60 to 100 parts by weight, based on 100 parts by weight of the calcined sludge reactant contained in the environmentally friendly snow remover composition of the present invention. If the melting performance diffusing agent is calcined If the content of the sludge is less than 55 parts by weight based on 100 parts by weight of the sludge reactant, the diffusion performance of the sludge may be insufficient, resulting in deterioration of the melting performance of the environmentally friendly snow remover of the present invention. .
On the other hand, the present invention provides an eco-friendly snow remover comprising the eco-friendly snow remover composition described above.
The eco-friendly snow removing agent of the present invention can have a melting performance of 90 to 99% when the freezing temperature is -50 ° C to -32 ° C and the melting performance of sodium chloride (NaCl) is 100%.
In conclusion, the eco-friendly snow remover of the present invention has a low freezing temperature as well as similar melting performance compared to sodium chloride, which is generally used.
Further, the eco-friendly snow remover of the present invention is advantageous in that it can recycle the calcined sludge which has been completely buried in the past as a snow remover using limestone calcined sludge which is an industrial byproduct.
(1) mixing a calcined sludge with an organic acid and then reacting to produce a calcined sludge reactant; And (2) mixing the calcined sludge reactant with potassium acetate, a freezing temperature improver, and an ice-melting performance dispersing agent to prepare a snow remover; And a method for producing the environmentally friendly snow remover.
First, in step (1), the calcined sludge reactant may be prepared by mixing calcined sludge with organic acid and then reacting the sludge sludge in water at 15 to 30 ° C.
(CaCO 3 ), 2 wt% of silicon oxide (SiO 2 ), 1 wt% of magnesium oxide (MgO), and 1 wt% of calcium carbonate are added to 100 wt% Calcined sludge containing 1% by weight of aluminum oxide (Al 2 O 3 ) and 1% by weight of iron oxide (Fe 2 O 3 ) and acetic acid usable as an organic acid are mixed and then reacted at 15 to 30 ° C in water silicon oxide (SiO 2), calcium acetate (Ca (CH 3 COO) 2 ), magnesium acetate (Mg (CH 3 COO) 2 ), aluminum acetate (Al (CH 3 COO) 2 ) and acetic acid iron (Fe (CH 3 COO) 2 ). ≪ / RTI > At this time, the calcined sludge reactant may contain 90 wt% or more of calcium acetate (Ca (CH 3 COO) 2 ) based on 100 wt% of the whole calcined sludge reactant.
(2)
Next, in step (2), the lignocellulosic sludge reactant is mixed with potassium acetate, a freezing temperature improver, and an ice melting performance dispersant to prepare a snow remover.
The step (2) will be described in detail. First, potassium lactate may be mixed with the calcined sludge reactant to prepare a mixture. At this time, 20.0 to 37.5 parts by weight of potassium acetate may be mixed with 100 parts by weight of the calcined sludge reactant. If potassium acetate is contained in an amount of less than 20.0 parts by weight based on 100 parts by weight of the calcined sludge reactant, the ice-melting performance may be deteriorated, and if it exceeds 40.0 parts by weight, it is economically inefficient.
Next, the mixture can be mixed with the melting performance dispersing agent. The melting performance diffusing agent may be prepared by mixing a compound represented by the following formula (1) and a dispersion solvent at a weight ratio of 1: 0.8 to 1.2.
[Chemical Formula 1]
In Formula 1, R 1 , R 2 and R 3 are each independently H, a C 3 to C 5 branched alkyl group or a C 1 to C 5 linear alkyl group.
As the dispersion solvent, at least one of acetone solution, sulfuric acid ester solution of C 6 to C 12 alcohol and carboxymethyl cellulose solution may be used. Preferably, acetone solution in which water and acetone are mixed is used .
If the freezing temperature improver is contained in an amount of less than 6.0 parts by weight based on 100 parts by weight of the calcined sludge reactant, the environmentally friendly snow remover composition of the present invention There may be a problem that the freezing temperature of the composition of the present invention can not be sufficiently lowered. If it exceeds 15.0 parts by weight, the solubility of the compound represented by the formula 1 may be lowered, have.
Finally, the eco-friendly snow removing agent of the present invention can be prepared by mixing the mixture and the melting performance dispersing agent with the melting performance dispersing agent.
The melting performance diffusing agent may include at least one of glycerin, propylene glycol, sorbitol, and tartaric acid, and may preferably include at least one of glycerin and propylene glycol.
The melting performance diffusing agent may be included in an amount of 55 to 105 parts by weight based on 100 parts by weight of the calcined sludge. If the melting performance diffusing agent is contained in an amount of less than 55 parts by weight based on 100 parts by weight of the calcined sludge reactant, There may be a problem that the melting performance of the environmentally friendly snow remover of the present invention is deteriorated, and if the amount exceeds 105 parts by weight, economical degradation may occur.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various changes and modifications may be made without departing from the scope of the present invention. For example, each component specifically illustrated in the embodiments of the present invention can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The present invention will now be described more specifically with reference to the following examples. However, the following examples should not be construed as limiting the scope of the present invention, and should be construed to facilitate understanding of the present invention.
Example
Preparation Example One
Acetic acid (CH 3 COOH) is mixed with calcined sludge (average particle diameter: 10 to 50 μm) containing 85 to 98% by weight of calcium carbonate (CaCO 3 ) and then reacted with water at 20 ± 2 ° C., The sludge reactant was prepared.
Example One
An eco-friendly snow remover was prepared by mixing potassium lactate, a freezing temperature improver, and an ice melting performance dispersant in the calcined sludge reactant prepared in Preparation Example 1.
At that time, 37.5 parts by weight of potassium acetate, 12.5 parts by weight of the freezing temperature improver and 100 parts by weight of the melting performance dispersing agent were mixed with 100 parts by weight of the calcined sludge reactant prepared in Preparation Example 1.
As a freezing temperature improver, 1: 1 weight ratio of a compound represented by the following formula (1) and an acetone solution of 0.8 wt% (Daejin Chemical) was used, and glycerin (Aekyung Chemical) and propylene glycol (Samdo Chemical Co., Were mixed at a weight ratio of 1: 1.
Example 2 to 8 and Comparative Example 1-4
Examples 2 to 8 and Comparative Examples 1 to 4 were prepared at blending ratios shown in Table 1 below, except that the blending ratios were the same as those of Example 1 to prepare a snow removing agent.
(Parts by weight)
(Parts by weight)
(Parts by weight)
(Parts by weight)
(Parts by weight)
Experimental Example 1
Table 2 shows the properties of the snow removers prepared by the examples and comparative examples.
1. Freeze temperature measurement
After putting the solution agent in the freezing point first, the acetone as a heat solvent is injected into the glass tube inside the freezing point device to freeze the snow removing agent. At this time, the freezing temperature was measured by observing the state of the thermometer and the snow remover in the freezing point device at the time of freezing.
2. Measurement of melting performance
The evaluation of the melting performance of the snow remover was carried out according to the method of EM502-3: 2014 in EL 610, and the melting performance of sodium chloride (NaCl) as a reference material for the liquid snow remover was determined as 100% The ice-rolling performance (%) of the produced snow remediation agent was evaluated.
Sodium chloride (NaCl) used for the comparative performance evaluation had a purity of 98% or more and a particle diameter of 0.2 to 0.3 mm. Sodium chloride, the reference material for liquid snow removers, is dissolved in deionized water in a saturated state and used as a supernatant of aqueous solutions stored at the test temperatures of -3 ° C and -7 ° C for over 1 hour.
3. Confirm whether float is generated
The viscosities of the snow removers produced by the examples and comparative examples are shown in Table 2 below.
As can be seen from the above Table 2, it was confirmed that the snow removers prepared in Examples 1 to 4 exhibited similar freezing temperatures and melting performance to those of the snow removers prepared in Comparative Example 1.
Further, it was confirmed that the snow removers prepared in Examples 1 to 4 had a lower freezing temperature than the snow removers prepared in Comparative Examples 2 to 4, and had excellent ice-melting performance.
In addition, it was confirmed that the snow removers prepared in Examples 1 to 4 had a lower freezing temperature than the snow removers prepared in Examples 5 to 8, and had excellent ice-melting performance.
It was also confirmed that the snow removers prepared in Example 1 among the snow remedies prepared in Examples 1 to 4 had the lowest freezing temperature and excellent ice-melting performance.
Claims (10)
Wherein the composition comprises 20.0 to 40.0 parts by weight of potassium acetate, 6.0 to 15.0 parts by weight of a freezing property improving agent, and 55 to 105 parts by weight of a melting performance spreading agent, based on 100 parts by weight of the calcined sludge reactant.
Wherein the calcined sludge comprises calcium carbonate (CaCO 3 ) and ceramic,
Wherein the ceramic comprises at least one of silicon oxide (SiO 2 ), magnesium oxide (MgO), aluminum oxide (Al 2 O 3 ) and iron oxide (Fe 2 O 3 ).
Wherein the calcined sludge has an average particle diameter of 1 to 80 占 퐉.
Wherein the organic acid comprises at least one of acetic acid, formic acid, gluconic acid, and propionic acid.
Wherein the freezing temperature improver comprises a compound represented by the following general formula (1) and a dispersion solvent,
1. An environmentally friendly snow remover composition comprising a compound represented by the following formula (1) and a dispersion solvent in a weight ratio of 1: 0.8 to 1.2:
[Chemical Formula 1]
In Formula 1, R 1 , R 2 and R 3 are each independently H, a C 3 to C 5 branched alkyl group or a C 1 to C 5 linear alkyl group.
Wherein the dispersion solvent comprises at least one of acetone solution, sulfuric acid ester solution of C 6 -C 12 alcohol, and carboxymethyl cellulose solution.
Wherein the melting performance diffusing agent comprises at least one of glycerin, propylene glycol, sorbitol and tartaric acid.
The eco-friendly snow remover has an ice-making performance of 90 to 99% when the freezing temperature is -50 ° C to -32 ° C and the melting performance of sodium chloride (NaCl) is 100%.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845881A (en) * | 2021-10-11 | 2021-12-28 | 顾春光 | Calcium-magnesium acetate liquid snow-melting agent, irregular particle snow-melting agent and preparation method |
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| KR101983851B1 (en) | 2018-05-29 | 2019-05-30 | (주)하얀소금 | Eco-friendly snow composition for deicer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101205146B1 (en) | 2010-09-29 | 2012-11-26 | 현대제철 주식회사 | desulphurizing agent made from by-product of lime cacination and manufacturing method |
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| KR101022259B1 (en) * | 2010-06-10 | 2011-03-21 | 극동제연공업 주식회사 | Deicing agent having liquid phase |
| KR101021441B1 (en) * | 2010-07-29 | 2011-03-15 | 주식회사 한국자원통상 | Eco-friendly liquid and solid type deicer composition, and producing apparatus of liquid type slaked lime used for the liquid type deicer composition |
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| KR101205146B1 (en) | 2010-09-29 | 2012-11-26 | 현대제철 주식회사 | desulphurizing agent made from by-product of lime cacination and manufacturing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113845881A (en) * | 2021-10-11 | 2021-12-28 | 顾春光 | Calcium-magnesium acetate liquid snow-melting agent, irregular particle snow-melting agent and preparation method |
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