CN113652201A - Antifreezing agent, preparation method and application thereof - Google Patents
Antifreezing agent, preparation method and application thereof Download PDFInfo
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- CN113652201A CN113652201A CN202110809541.9A CN202110809541A CN113652201A CN 113652201 A CN113652201 A CN 113652201A CN 202110809541 A CN202110809541 A CN 202110809541A CN 113652201 A CN113652201 A CN 113652201A
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- 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
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Abstract
The application provides an antifreezing agent, a preparation method and application thereof, wherein the method comprises the following steps: mixing 300-350 parts of water and 700-800 parts of calcium chloride dihydrate according to parts by weight, stirring for 10-12 minutes, adding 300-350 parts of water and 0.3-0.5 part of thickening agent, and stirring for 10-12 minutes; then adding 400-500 parts of water and 40-50 parts of rust inhibitor and stirring for 5 minutes; adding 0.1-0.3 part of pH regulator in the stirring process, and stirring for 20-24 minutes to obtain the antifreezing agent with the pH of 7-9, wherein the antifreezing agent can be added according to the proportion of 200g/m when in application2The amount of the coating is sprayed on the inner wall and the bottom of the carriage. The antifreezing agent can be obtained by uniformly mixing the components mechanically, the existing preparation is realized, the preparation method is easy to operate, and the cost is greatly saved.
Description
Technical Field
The application relates to the technical field of coal transportation, in particular to an antifreezing agent, a preparation method and an application thereof.
Background
Coal resources in northern China are abundant, billions of tons of coal are transported by railways every year, and a large amount of water is left in the coal in the mining process, so that the coal is very easy to freeze in extremely cold environment in northern China, loading and unloading are difficult during railway transportation, and transportation efficiency is seriously influenced. At the moment, anti-freezing measures are required to be taken during loading, and the conventional method is to spray anti-freezing agents to the inner wall and the bottom of the carriage.
At present, finished antifreeze powder or antifreeze liquid is generally purchased directly, and then diluted by water to obtain the antifreeze, and then the antifreeze is sprayed into a carriage. But the cost is higher because the finished product of the anti-freezing powder or the anti-freezing liquid needs to be purchased.
Disclosure of Invention
The application provides an antifreezing agent, a preparation method and application thereof, which are used for solving the problem of high cost for purchasing finished antifreezing powder or antifreezing solution.
In a first aspect, the present application provides a method of making an antifreeze comprising: adding 700-800 parts by weight of calcium chloride dihydrate and 300-350 parts by weight of water into a stirring kettle, and stirring for 10-12 minutes to uniformly mix and dissolve the calcium chloride dihydrate and the water;
adding 0.3-0.5 part by weight of thickening agent and 300-350 parts by weight of water into the stirring kettle, and stirring for 10-12 minutes;
adding 40-50 parts by weight of a rust inhibitor and 400-500 parts by weight of water into the stirring kettle, and stirring for 5-7 minutes;
and adding 0.1-0.3 part by weight of pH regulator into the stirring kettle, and stirring for 20-24 minutes to obtain the antifreezing agent with the pH value of 7-9.
Optionally, the thickener comprises one or more of carboxymethyl cellulose, sodium carboxymethyl starch, polyvinyl alcohol, polyacrylamide and sodium polyacrylate.
Optionally, the rust inhibitor comprises one or more of sodium nitrite, calcium nitrite, dimethylethanolamine and triethanolamine.
Optionally, the pH regulator includes one or more of sodium hydroxide, ammonia water, potassium hydroxide, sodium carbonate, and potassium carbonate.
Optionally, adding 0.1-0.3 part by weight of a pH regulator into the stirring kettle, and stirring for 20-24 minutes, including:
adding 0.1-0.15 part by weight of pH regulator into the stirring kettle, and stirring for 10-12 minutes;
detecting the pH value of the antifreezing agent, and if the pH value is not more than 7, adding 0-0.15 parts by weight of pH regulator into the stirring kettle, and stirring for 10-12 minutes; if the pH value is more than 7, the antifreezing agent is continuously stirred for 10-12 minutes without adding a pH regulator.
In a second aspect, the present application provides an antifreeze comprising: 700-800 parts of calcium chloride dihydrate, 1000-1200 parts of water, 0.3-0.5 part of thickener, 40-50 parts of rust inhibitor and 0.1-0.3 part of pH regulator; wherein the pH value of the antifreezing agent is 7-9.
Optionally, the antifreeze agent comprises 700-800 parts by weight of calcium chloride dihydrate, 1000-1200 parts by weight of water, 0.3-0.5 part by weight of thickener, 40-50 parts by weight of rust inhibitor and 0.1-0.3 part by weight of pH regulator.
Optionally, the thickener comprises one or more of carboxymethyl cellulose, sodium carboxymethyl starch, polyvinyl alcohol, polyacrylamide and sodium polyacrylate.
Optionally, the pH regulator includes one or more of sodium hydroxide, ammonia water, potassium hydroxide, sodium carbonate, and potassium carbonate; and/or the presence of a gas in the gas,
the rust inhibitor comprises one or more of sodium nitrite, calcium nitrite, dimethylethanolamine and triethanolamine.
In a third aspect, the present application provides a method of using an antifreeze agent in coal transportation, comprising: an antifreeze obtained by the method according to any one of the first aspect or the second aspect, which is used in an amount of 200g/m2The amount of the antifreeze solution is uniformly sprayed on the inner wall and the bottom of a coal transportation carriage, and then the coal is loaded in the carriage sprayed with the antifreeze solution.
According to the antifreezing agent, the preparation method and the application, the antifreezing agent can be obtained by mechanically and uniformly mixing the components, the existing preparation is realized, the preparation method is easy to operate, and the cost is greatly saved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method for preparing an antifreeze provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a method for preparing an antifreeze provided in an embodiment of the present application, and as shown in fig. 1, the method of this embodiment may include:
s101, adding 700-800 parts by weight of calcium chloride dihydrate and 300-350 parts by weight of water into a stirring kettle, and stirring for 10-12 minutes to uniformly mix and dissolve the calcium chloride dihydrate and the water.
In the embodiment, 700-800 parts by weight of calcium chloride dihydrate and 300-350 parts by weight of water are weighed, and 700-800 parts by weight of calcium chloride dihydrate and 300-350 parts by weight of water are added into a stirring kettle. 700-800 parts by weight of calcium chloride dihydrate can be added into a stirring kettle firstly, and then 300-350 parts by weight of water is added, or 300-350 parts by weight of water can be added into the stirring kettle firstly, and then 700-800 parts by weight of calcium chloride dihydrate is added.
And stirring the calcium chloride dihydrate and the water in a stirring kettle to mix the calcium chloride dihydrate with the water so as to dissolve the calcium chloride dihydrate in the water, stirring for 10-12 minutes so as to uniformly mix the calcium chloride dihydrate with the water, and completely dissolving the calcium chloride dihydrate in the water.
In the embodiment, the antifreezing effect is realized by utilizing the characteristic that the freezing point of water can be greatly reduced after the calcium chloride dihydrate is dissolved in the water.
S102, adding 0.3-0.5 part by weight of thickening agent and 300-350 parts by weight of water into the stirring kettle, and stirring for 10-12 minutes.
In the embodiment, 0.3-0.5 part by weight of the thickener and 300-350 parts by weight of water are weighed and added into the stirring kettle. 0.3-0.5 part by weight of thickening agent can be added into a stirring kettle, and then 300-350 parts by weight of water is added; or, 300-350 parts by weight of water can be added into the stirring kettle, and then 0.3-0.5 part by weight of thickening agent is added.
And stirring the thickening agent and water in a stirring kettle to completely mix the thickening agent with the liquid in the stirring kettle, and stirring for 10-12 minutes to completely dissolve the thickening agent in the liquid in the stirring kettle.
This example increases the viscosity of the antifreeze by using a thickener.
S103, adding 40-50 parts by weight of rust inhibitor and 400-500 parts by weight of water into the stirring kettle, and stirring for 5-7 minutes.
In the embodiment, 40-50 parts by weight of the rust inhibitor and 400-500 parts by weight of water are weighed and added into the stirring kettle. Adding 40-50 parts by weight of rust inhibitor into a stirring kettle, and then adding 400-500 parts by weight of water; or, 400-500 parts by weight of water can be added into the stirring kettle, and then 40-50 parts by weight of the rust inhibitor can be added.
And stirring the rust inhibitor and water in a stirring kettle to completely mix the rust inhibitor with the liquid in the stirring kettle, and stirring for 5-7 minutes to completely dissolve the rust inhibitor in the liquid in the stirring kettle.
According to the embodiment, the corrosion of the antifreezing agent to the carriage can be effectively inhibited through the combination of the rust inhibitor and the chloride ions in the antifreezing agent.
S104, adding 0.1-0.3 part by weight of pH value regulator into the stirring kettle, and stirring for 20-24 minutes to obtain the antifreezing agent with the pH value of 7-9.
In a possible implementation manner, in the step S104, 0.1 to 0.15 parts by weight of the pH regulator is added to the stirring kettle and stirred for 10 to 12 minutes, and then after the pH value of the antifreeze is detected, 0 to 0.15 parts by weight of the pH regulator is added to the stirring kettle and stirred for 10 to 12 minutes.
In the embodiment, after 40 to 50 parts by weight of the rust inhibitor and 400 to 500 parts by weight of water are added into the stirring kettle and stirred for 5 to 7 minutes, 0.1 to 0.15 part by weight of the pH value regulator is added into the stirring kettle and stirred for 10 to 12 minutes, so that the pH value regulator is completely dissolved in the liquid in the stirring kettle, the pH value is detected, if the pH value is less than 7, the pH value regulator is continuously added, for example, the pH value regulator is not more than 0.15 part by weight, if the pH value is more than or equal to 7, the pH value regulator is stopped being added, and the stirring is still carried out for 10 to 12 minutes. Optionally, if the detected pH value is still less than 7 after the pH value adjusting agent is added for the second time, the pH value adjusting agent is continuously added, which is not described herein again. Until the antifreezing agent with the pH value of 7-9 is obtained.
According to the embodiment, the pH value of the obtained antifreezing agent can be accurately controlled to be between 7 and 9 by adding the pH value regulator for multiple times in a small amount.
In some embodiments of the present application, the thickener comprises one or more of carboxymethyl cellulose, sodium carboxymethyl starch, polyvinyl alcohol, polyacrylamide, sodium polyacrylate.
In some embodiments of the present application, the rust inhibitor comprises one or more of sodium nitrite, calcium nitrite, dimethylethanolamine, triethanolamine.
In some embodiments of the present application, the pH adjuster comprises one or more of sodium hydroxide, ammonia, potassium hydroxide, sodium carbonate, potassium carbonate.
In some embodiments of the present application, the material of the stirring tank is stainless steel.
According to the preparation method of the antifreezing agent, the calcium chloride dihydrate, the thickening agent, the rust inhibitor, the pH value regulator and the water are mechanically mixed, so that the antifreezing agent with the pH value of 7-9 can be obtained, the purpose of preparing the antifreezing agent on site and not needing to additionally purchase commercial products is achieved, and the cost is greatly reduced. The antifreezing agent obtained by the method is strong in freezing resistance and wide in applicable working temperature range.
The present application also provides an antifreeze comprising: 1000-1200 parts of water, 700-800 parts of calcium chloride dihydrate, 0.3-0.5 part of thickener, 40-50 parts of rust inhibitor and 0.1-0.3 part of pH regulator.
Optionally, the antifreeze agent comprises 1000-1200 parts by weight of water, 700-800 parts by weight of calcium chloride dihydrate, 0.3-0.5 part by weight of thickener, 40-50 parts by weight of rust inhibitor and 0.1-0.3 part by weight of pH regulator.
In some alternative embodiments, the thickener comprises one or more of carboxymethyl cellulose, sodium carboxymethyl starch, polyvinyl alcohol, polyacrylamide, sodium polyacrylate. Wherein the thickener can be one of carboxymethyl cellulose, sodium carboxymethyl starch, polyvinyl alcohol, polyacrylamide and sodium polyacrylate, or can be obtained by mixing the above materials.
In some alternative embodiments, the pH adjuster may be one of sodium hydroxide, ammonia, potassium hydroxide, sodium carbonate, potassium carbonate, or a mixture thereof.
In some alternative embodiments, the rust inhibitor may be one of sodium nitrite, calcium nitrite, dimethylethanolamine, triethanolamine, or a mixture thereof.
In some alternative embodiments, the water is tap water.
The method for preparing the antifreeze provided by the present application is described below with reference to several examples.
Example one
Adding 300 parts by weight of water and 700 parts by weight of calcium chloride dihydrate into a stirring kettle, and stirring for 10 minutes to fully dissolve the calcium chloride dihydrate; adding 0.3 part by weight of carboxymethyl cellulose and 300 parts by weight of water into the reaction kettle, and stirring for 10 minutes to fully dissolve the carboxymethyl cellulose; adding 40 parts by weight of sodium nitrite and 400 parts by weight of water into the stirring kettle, and stirring for 5 minutes to fully dissolve the sodium nitrite; and adding 0.1 part by weight of sodium hydroxide into the stirring kettle, stirring for 10 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 7, and continuously stirring the mixture for 10 minutes to obtain the antifreezing agent with the pH value of 7.
Example two
Adding 300 parts by weight of water and 750 parts by weight of calcium chloride dihydrate into a stirring kettle, and stirring for 10 minutes to fully dissolve the calcium chloride dihydrate; adding 0.4 part by weight of carboxymethyl cellulose and 350 parts by weight of water into the reaction kettle, and stirring for 11 minutes to fully dissolve the carboxymethyl cellulose; adding 45 parts by weight of sodium nitrite and 400 parts by weight of water into the stirring kettle, and stirring for 5 minutes to fully dissolve the sodium nitrite; adding 0.1 part by weight of sodium hydroxide into the stirring kettle, stirring for 10 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 6, adding 0.1 part by weight of sodium hydroxide into the reaction kettle, stirring for 12 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 8, and obtaining the antifreezing agent with the pH value of 8.
EXAMPLE III
Adding 350 parts by weight of water and 800 parts by weight of calcium chloride dihydrate into a stirring kettle, and stirring for 12 minutes to fully dissolve the calcium chloride dihydrate; adding 0.5 part by weight of carboxymethyl cellulose and 350 parts by weight of water into the reaction kettle, and stirring for 12 minutes to fully dissolve the carboxymethyl cellulose; adding 50 parts by weight of rust inhibitor (35 parts by weight of sodium nitrite and 15 parts by weight of dimethylethanolamine) and 400 parts by weight of water into the stirring kettle, and stirring for 6 minutes to fully dissolve the rust inhibitor; adding 0.15 part by weight of sodium hydroxide into the stirring kettle, stirring for 12 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 6, adding 0.15 part by weight of sodium hydroxide into the reaction kettle, stirring for 12 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 8, and obtaining the antifreezing agent with the pH value of 8.
Example four
Adding 300 parts by weight of water and 750 parts by weight of calcium chloride dihydrate into a stirring kettle, and stirring for 10 minutes to fully dissolve the calcium chloride dihydrate; adding 0.4 part by weight of carboxymethyl cellulose and 330 parts by weight of water into the reaction kettle, and stirring for 10 minutes to fully dissolve the carboxymethyl cellulose; adding 50 parts by weight of rust inhibitor (35 parts by weight of sodium nitrite and 15 parts by weight of dimethylethanolamine) and 500 parts by weight of water into the stirring kettle, and stirring for 7 minutes to fully dissolve the rust inhibitor; and adding 0.15 part by weight of sodium hydroxide into the stirring kettle, stirring for 10 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 8, and continuously stirring the mixture for 10 minutes to obtain the antifreezing agent with the pH value of 8.
EXAMPLE five
Adding 300 parts by weight of water and 750 parts by weight of calcium chloride dihydrate into a stirring kettle, and stirring for 11 minutes to fully dissolve the calcium chloride dihydrate; adding 0.4 part by weight of carboxymethyl cellulose and 350 parts by weight of water into the reaction kettle, and stirring for 11 minutes to fully dissolve the carboxymethyl cellulose; adding 45 parts by weight of sodium nitrite and 400 parts by weight of water into the stirring kettle, and stirring for 6 minutes to fully dissolve the sodium nitrite; adding 0.1 part by weight of sodium hydroxide into the stirring kettle, stirring for 11 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 6, adding 0.1 part by weight of sodium hydroxide into the reaction kettle, stirring for 11 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 8, and obtaining the antifreezing agent with the pH value of 8.
EXAMPLE six
Adding 300 parts by weight of water and 750 parts by weight of calcium chloride dihydrate into a stirring kettle, and stirring for 10 minutes to fully dissolve the calcium chloride dihydrate; adding 0.4 part by weight of carboxymethyl cellulose and 350 parts by weight of water into the reaction kettle, and stirring for 10 minutes to fully dissolve the carboxymethyl cellulose; adding 45 parts by weight of sodium nitrite and 430 parts by weight of water into the stirring kettle, and stirring for 5 minutes to fully dissolve the sodium nitrite; adding 0.1 part by weight of sodium hydroxide into the stirring kettle, stirring for 10 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 6, adding 0.15 part by weight of sodium hydroxide into the reaction kettle, stirring for 10 minutes to fully dissolve the sodium hydroxide, measuring the pH value of the mixture to be 9, and obtaining the antifreezing agent with the pH value of 9.
Antifreeze performance test
The antifreeze prepared in the first to sixth embodiments is tested according to the standard of TB/T32083208-.
Watch 1
As can be seen from the test results, the antifreezing agent reaches each technical index of the No. 1 modification list of TB/T32083208-.
Screening of antifreeze application amount
In order to save the antifreeze and guide the practical application, the antifreeze prepared according to the first embodiment is screened by uniformly spraying different amounts of antifreeze on the surfaces of 4 identical aluminum alloy plates (5083-H321, 1m × 1m in size) and then uniformly spraying 10% by weight of water on the surfaces of the 4 aluminum alloy plates sprayed with antifreeze, vertically suspending the steel plates, keeping the steel plates at-10 ℃ for 10 minutes, and respectively observing the icing condition and the antifreeze bottom aggregation condition, wherein the screening data are as shown in the second table:
watch two
As shown in Table two, the antifreezing agent is applied in an amount of 200g/m2Can achieve good anti-freezing effect and can reach 200g/m2Can also reduce the waste of antifreeze at the application amount of (1), so that the antifreeze is sprayed at 200g/m2The optimal usage amount is obtained.
The antifreeze prepared by the embodiments of the application is used according to 200g/m2Uniformly spraying the antifreeze solution on the inner wall and the bottom of a carriage carrying coal, and loading the coal on the carriage sprayed with the antifreeze solution. Optionally, the adding proportion of water can be properly increased or decreased according to the conditions such as local air temperature and the like during use, so as to save the use of the antifreezing agent.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A preparation method of an antifreezing agent is characterized by comprising the following steps:
adding 300-350 parts by weight of water and 700-800 parts by weight of calcium chloride dihydrate into a stirring kettle, and stirring for 10-12 minutes to uniformly mix and dissolve the calcium chloride dihydrate and the water;
adding 0.3-0.5 part by weight of thickening agent and 300-350 parts by weight of water into the stirring kettle, and stirring for 10-12 minutes;
adding 40-50 parts by weight of a rust inhibitor and 400-500 parts by weight of water into the stirring kettle, and stirring for 5-7 minutes;
and adding 0.1-0.3 part by weight of pH value regulator into the stirring kettle, and stirring for 20-24 minutes to obtain the antifreezing agent with the pH value of 7-9.
2. The method of claim 1, wherein the adding 0.1-0.3 parts by weight of the pH regulator into the stirring kettle, and stirring for 20-24 minutes comprises:
adding 0.1-0.15 part by weight of pH value regulator into the stirring kettle, and stirring for 10-12 minutes;
and after the pH value of the antifreezing agent is detected, adding 0-0.15 part by weight of pH value regulator into the stirring kettle, and stirring for 10-12 minutes.
3. The method of claim 1, wherein the thickener comprises one or more of carboxymethyl cellulose, sodium carboxymethyl starch, polyvinyl alcohol, polyacrylamide, and sodium polyacrylate.
4. The method of claim 1, wherein the rust inhibitor comprises one or more of sodium nitrite, calcium nitrite, dimethylethanolamine, triethanolamine.
5. The method of claim 1, wherein the pH adjusting agent comprises one or more of sodium hydroxide, ammonia, potassium hydroxide, sodium carbonate, and potassium carbonate.
6. The method according to any one of claims 1 to 5, wherein the stirring vessel is made of stainless steel.
7. An antifreeze, comprising: 700-800 parts of calcium chloride dihydrate, 1000-1200 parts of water, 0.3-0.5 part of thickener, 40-50 parts of rust inhibitor and 0.1-0.3 part of pH regulator;
wherein the pH value of the antifreezing agent is 7-9.
8. The antifreeze agent of claim 7, wherein said thickener comprises one or more of carboxymethylcellulose, sodium carboxymethyl starch, polyvinyl alcohol, polyacrylamide, and sodium polyacrylate.
9. The antifreeze of claim 7 or 8, wherein said pH adjuster comprises one or more of sodium hydroxide, aqueous ammonia, potassium hydroxide, sodium carbonate, potassium carbonate; and/or the presence of a gas in the gas,
the rust inhibitor comprises one or more of sodium nitrite, calcium nitrite, dimethylethanolamine and triethanolamine.
10. A method for using antifreeze in coal transportation is characterized by comprising the following steps:
an antifreeze agent prepared by the method as claimed in any one of claims 1 to 6 or the antifreeze agent as claimed in any one of claims 7 to 9 in an amount of 200g/m2The spraying amount of the water-based paint is uniformly sprayed on the inner wall and the bottom surface of the coal transportation carriage;
and loading coal into the carriage sprayed with the anti-freezing agent.
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| CN202110809541.9A CN113652201A (en) | 2021-07-15 | 2021-07-15 | Antifreezing agent, preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115505372A (en) * | 2022-09-22 | 2022-12-23 | 徐州中矿海森德安全科技有限公司 | Method for preparing coal antifreeze by using ammonia-soda waste liquid and coal antifreeze |
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| CN101747865A (en) * | 2009-12-12 | 2010-06-23 | 呼和浩特铁路局科研所 | Antifreezing product for the transportation of bulk granular goods, and preparing method thereof |
| CN103242804A (en) * | 2013-05-22 | 2013-08-14 | 山西兆益矿用材料有限公司 | Wall-hanging antifreezing solution |
| CN109370521A (en) * | 2018-12-12 | 2019-02-22 | 神木市锦界安顺煤矿机电修造有限公司 | Railway transportation coal oiliness antifreezing agent |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101747865A (en) * | 2009-12-12 | 2010-06-23 | 呼和浩特铁路局科研所 | Antifreezing product for the transportation of bulk granular goods, and preparing method thereof |
| CN103242804A (en) * | 2013-05-22 | 2013-08-14 | 山西兆益矿用材料有限公司 | Wall-hanging antifreezing solution |
| CN109370521A (en) * | 2018-12-12 | 2019-02-22 | 神木市锦界安顺煤矿机电修造有限公司 | Railway transportation coal oiliness antifreezing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115505372A (en) * | 2022-09-22 | 2022-12-23 | 徐州中矿海森德安全科技有限公司 | Method for preparing coal antifreeze by using ammonia-soda waste liquid and coal antifreeze |
| CN115505372B (en) * | 2022-09-22 | 2023-12-22 | 徐州中矿海森德安全科技有限公司 | Method for preparing coal antifreezing solution by using ammonia-soda waste liquid and coal antifreezing solution |
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