CN112812744A - Low-cost coal dust suppressant and preparation method thereof - Google Patents
Low-cost coal dust suppressant and preparation method thereof Download PDFInfo
- Publication number
- CN112812744A CN112812744A CN202011628095.3A CN202011628095A CN112812744A CN 112812744 A CN112812744 A CN 112812744A CN 202011628095 A CN202011628095 A CN 202011628095A CN 112812744 A CN112812744 A CN 112812744A
- Authority
- CN
- China
- Prior art keywords
- parts
- dust suppressant
- coal dust
- low
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002817 coal dust Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 13
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 13
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 13
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 12
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 12
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 12
- 229910021538 borax Inorganic materials 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 11
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 9
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 13
- 239000003945 anionic surfactant Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- UHGIMQLJWRAPLT-UHFFFAOYSA-N octadecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCOP(O)(O)=O UHGIMQLJWRAPLT-UHFFFAOYSA-N 0.000 claims description 3
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 3
- 235000010234 sodium benzoate Nutrition 0.000 claims description 3
- 239000004299 sodium benzoate Substances 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 235000015393 sodium molybdate Nutrition 0.000 claims description 3
- 239000011684 sodium molybdate Substances 0.000 claims description 3
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 3
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 28
- 239000003245 coal Substances 0.000 description 27
- 230000001629 suppression Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Classifications
-
- 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
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The application discloses a low-cost coal dust suppressant and a preparation method thereof, wherein the low-cost coal dust suppressant comprises the following components: sodium carboxymethylcellulose, sodium tetraborate, sodium sulfate, a corrosion inhibitor, polyacrylamide, a surfactant and water. The preparation method of the coal dust suppressant comprises the following steps: sequentially adding sodium carboxymethylcellulose, a surfactant, a corrosion inhibitor, polyacrylamide, sodium sulfate and sodium tetraborate, and fully stirring for 30 minutes to obtain powder; and adding the powder into water while stirring, and continuously stirring for 20-30 minutes after the powder is added. According to the low-cost coal dust suppressant and the preparation method thereof, the sodium tetraborate and the sodium sulfate are added, so that the use of sodium carboxymethylcellulose is reduced to a great extent, and the preparation cost of the dust suppressant is reduced.
Description
Technical Field
The application relates to the field of environmental protection, in particular to a low-cost coal dust suppressant and a preparation method thereof.
Background
Coal dust generated in coal transportation is a major source of dust pollution. In China, coal transportation adopts open wagon transportation, and coal particles raise dust due to factors such as jolt, wind power, pressure difference and the like in the transportation process, so that the environment is polluted.
For coal dust pollution, the traditional coping method is to supply tarpaulin to a cover of the coal car or spray water to the coal car. The methods solve the problem of coal dust flying in the coal pulling process to a certain extent, but still have some defects, such as tarpaulin for covering the surface of a coal car, and the condition that wind blows or cracks in the running process of the car; for example, water is sprayed to a coal car, and the water is easily evaporated in summer and easily frozen in winter, so that the coal dust suppression effect is poor, and the coal dust suppression device is difficult to popularize and apply in a large area for a long time.
In order to make up for the defects of the traditional dust suppression method, the coal dust suppression agent is produced at the same time, is low in freezing point and not easy to evaporate, can wet and bond coal dust particles and form a layer of crusting on the surface of coal, has a good dust suppression effect, and is widely popularized and applied. However, with the popularization and application of the coal dust suppressant, the demand of the coal dust suppressant gradually rises, and the price of the main raw material sodium carboxymethyl cellulose of the coal dust suppressant rises immediately, so that the coal transportation cost is correspondingly increased.
In summary, in order to reduce the manufacturing cost of the coal dust suppressant, it is an urgent need for those skilled in the art to provide a coal dust suppressant with low cost and high quality.
Disclosure of Invention
The application aims to provide a low-cost coal dust suppressant and a preparation method thereof, so as to solve the problem of high cost of the coal dust suppressant in the prior art.
In a first aspect of the present application, a low-cost coal dust suppressant is provided, which comprises, in parts by weight: 0.8-1.5 parts of powder and 98.5-99.2 parts of water.
The powder comprises the following components in parts by weight:
optionally, the low-cost coal dust suppressant comprises the following components in parts by weight: 1.5 parts of powder and 98.5 parts of water.
The powder comprises the following components in parts by weight:
optionally, the low-cost coal dust suppressant according to claim 1, wherein the low-cost coal dust suppressant comprises, by weight: 1 part of powder and 99 parts of water.
The powder comprises the following components in parts by weight:
optionally, the corrosion inhibitor is benzotriazole, sodium molybdate or sodium benzoate.
Optionally, the surfactant is an anionic surfactant.
Optionally, the anionic surfactant is sodium dodecyl benzene sulfonate, sodium dodecyl sulfate or octadecyl phosphate.
In a second aspect of the present application, a preparation method of a local cost coal dust suppressant is also provided, which comprises the following steps:
under the normal temperature state, 40-50 parts of sodium carboxymethylcellulose, 0-0.01 part of surfactant, 0.8-1 part of corrosion inhibitor, 0.5-1 part of polyacrylamide, 20-30 parts of sodium sulfate and 20-30 parts of sodium tetraborate are added in sequence according to the parts by weight, and the powder is obtained after fully stirring for 30 minutes.
Adding 0.8-1.5 parts of the powder into 98.5-99.2 parts of water according to the weight part ratio, stirring while adding, and continuing to stir for 20-30 minutes after the powder is added.
In the raw materials of the dust suppressant provided by the application, sodium tetraborate and sodium carboxymethyl cellulose molecules are interwoven into a net structure, so that a thick solidified layer is formed on the surface of coal; the sodium sulfate has strong hygroscopicity and can play a role in dissolving aid, and the sodium sulfate can replace part of the sodium carboxymethyl cellulose; the corrosion inhibitor can inhibit the corrosion of the dust suppressant to metal, and plays a role in protecting the coal transport vehicle; the polyacrylamide can increase the viscosity of the dust suppressant and enhance the coal dust adsorption capacity of the dust suppressant; the surfactant has good emulsifying function and can enhance the adsorption capacity of the dust suppressant. The dust suppressant can effectively adsorb coal dust particles in the transportation process of a coal car, and a layer of protective crusting is formed on the surface of coal, so that a good dust suppression effect is achieved; according to the dust suppressant, the sodium tetraborate and the sodium sulfate are added, so that the use of sodium carboxymethylcellulose is reduced to a great extent, and the preparation cost of the dust suppressant is reduced.
Detailed Description
The following describes in detail specific embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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.
In a first aspect of embodiments of the present application, there is provided a low-cost coal dust suppressant, including, in parts by weight: 0.8-1.5 parts of powder and 98.5-99.2 parts of water.
The powder comprises the following components in parts by weight:
optionally, the coal dust suppressant comprises the following components in parts by weight: 1.5 parts of powder and 98.5 parts of water.
The powder comprises the following components in parts by weight:
optionally, the coal dust suppressant comprises the following components in parts by weight: 1 part of powder and 99 parts of water.
The powder comprises the following components in parts by weight:
the corrosion inhibitor is one of benzotriazole, sodium molybdate and sodium benzoate, or a mixture of the two or the mixture of the three, can inhibit the corrosion of the dust suppressant on metals, and plays a role in protecting the coal transport vehicle.
The surfactant is an anionic surfactant, the anionic surfactant is one of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate or octadecyl phosphate, or a mixture of the two or the mixture of the three, and the surfactant has a good emulsifying function and can enhance the adsorption capacity of the dust suppressant.
In the embodiment of the application, the sodium carboxymethyl cellulose is a carboxymethylated derivative of cellulose, is odorless and tasteless, has strong hygroscopicity, is a main film forming agent, is matched with sodium tetraborate to form a network structure, and can ensure that a thick solidified layer is formed on the surface of coal. The sodium sulfate can reduce the cost and does not influence the use effect. The addition of a small amount of polyacrylamide can make the dust suppressant form a copolymer, further increase the viscosity of the dust suppressant, and tightly bond the coal particles together. A small amount of surfactant is added, so that the coal dust suppressant can better permeate into a coal bed to form a thicker solidified layer, and coal dust flying is well suppressed.
In the embodiment of the application, the use amount of sodium carboxymethylcellulose can be greatly reduced by using sodium tetraborate and sodium sulfate, the cost of the dust suppressant is greatly reduced, the dust suppressant can adsorb coal dust particles when in use, and a layer of protective shell film is formed on the surface of coal to isolate the coal from the outside, so that a good dust suppression effect is achieved.
Example one
A low-cost coal dust suppressant comprises the following components in parts by weight: 1.5 parts of powder and 98.5 parts of water.
The powder comprises the following components in parts by weight:
example two
A low-cost coal dust suppressant comprises the following components in parts by weight: 1 part of powder and 99 parts of water.
The powder comprises the following components in parts by weight:
in a second aspect of the embodiments of the present application, there is also provided a method for preparing a low-cost coal dust suppressant, the method for preparing a low-cost coal dust suppressant provided in the first aspect of the embodiments of the present application, the method comprising the following steps:
under the normal temperature state, 40-50 parts of sodium carboxymethylcellulose, 0-0.01 part of surfactant, 0.8-1 part of corrosion inhibitor, 0.5-1 part of polyacrylamide, 20-30 parts of sodium sulfate and 20-30 parts of sodium tetraborate are added in sequence according to the parts by weight, and the powder is obtained after fully stirring for 30 minutes.
Adding 0.8-1.5 parts of the powder into 98.5-99.2 parts of water according to the weight part ratio, stirring while adding, and continuing to stir for 20-30 minutes after the powder is added.
When the dust suppressant provided by the embodiment of the application is used, 2.2-4.0L of dust suppressant is sprayed to each square meter of the train wagon according to different seasons. Because of different coal humidity, change of coal transportation seasons and different proportions of loaded coal and truck end side walls, before use, a small test is firstly carried out to determine the water adding proportion and the spraying amount per square meter of the dust suppressant, and the actual experimental dosage can reach the technical standard TB/T3201.1-2020 of dust suppression for railway transportation of coal.
According to the dust suppressant provided by the application, the sodium tetraborate and the sodium sulfate are added, so that the use of sodium carboxymethylcellulose is reduced to a great extent, and the cost is reduced. The dust suppressant can effectively adsorb coal dust particles in the transportation process of a coal car and form a layer of protective shell film on the surface of coal, so that the coal is isolated from the outside, and a good dust suppression effect is achieved.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (7)
1. A low-cost coal dust suppressant is characterized by comprising the following components in parts by weight: 0.8-1.5 parts of powder and 98.5-99.2 parts of water;
the powder comprises the following components in parts by weight:
2. the low-cost coal dust suppressant according to claim 1, wherein the low-cost coal dust suppressant comprises, by weight: 1.5 parts of powder and 98.5 parts of water;
the powder comprises the following components in parts by weight:
3. the low-cost coal dust suppressant according to claim 1, wherein the low-cost coal dust suppressant comprises, by weight: 1 part of powder and 99 parts of water;
the powder comprises the following components in parts by weight:
4. the low-cost coal dust suppressant according to claim 1, wherein the corrosion inhibitor is benzotriazole, sodium molybdate or sodium benzoate.
5. The low cost coal dust suppressant of claim 1, wherein said surfactant is an anionic surfactant.
6. The low cost coal dust suppressant of claim 5, wherein the anionic surfactant is sodium dodecylbenzene sulfonate, sodium dodecyl sulfate or octadecyl phosphate.
7. A method for preparing a low-cost coal dust suppressant according to any one of claims 1 to 6, wherein the method comprises:
under the normal temperature state, 40-50 parts of sodium carboxymethylcellulose, 0-0.01 part of surfactant, 0.8-1 part of corrosion inhibitor, 0.5-1 part of polyacrylamide, 20-30 parts of sodium sulfate and 20-30 parts of sodium tetraborate are sequentially added according to the weight part ratio, and the mixture is fully stirred for 30 minutes to obtain powder;
adding 0.8-1.5 parts of the powder into 98.5-99.2 parts of water according to the weight part ratio, stirring while adding, and continuing to stir for 20-30 minutes after the powder is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011628095.3A CN112812744A (en) | 2020-12-30 | 2020-12-30 | Low-cost coal dust suppressant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011628095.3A CN112812744A (en) | 2020-12-30 | 2020-12-30 | Low-cost coal dust suppressant and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112812744A true CN112812744A (en) | 2021-05-18 |
Family
ID=75856337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011628095.3A Pending CN112812744A (en) | 2020-12-30 | 2020-12-30 | Low-cost coal dust suppressant and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112812744A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350319A (en) * | 2021-12-13 | 2022-04-15 | 煤炭科学技术研究院有限公司 | Dust suppressant for railway coal transportation and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604597A (en) * | 2012-02-27 | 2012-07-25 | 中国矿业大学(北京) | Coal dust suppressant and preparation method thereof |
| CN103184034A (en) * | 2013-01-04 | 2013-07-03 | 北京阳光溢彩科技有限公司 | Ecological environment-friendly dust inhibitor |
| CN104479631A (en) * | 2014-12-09 | 2015-04-01 | 上海应用技术学院 | Dust suppressant as well as preparation method and application thereof |
| CN104817997A (en) * | 2015-03-30 | 2015-08-05 | 内蒙古博冉科技有限责任公司 | Solid dust suppressant |
| CN109609089A (en) * | 2018-10-09 | 2019-04-12 | 宁夏北极星化工有限公司 | A kind of coal dust depressor and preparation method thereof |
-
2020
- 2020-12-30 CN CN202011628095.3A patent/CN112812744A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604597A (en) * | 2012-02-27 | 2012-07-25 | 中国矿业大学(北京) | Coal dust suppressant and preparation method thereof |
| CN103184034A (en) * | 2013-01-04 | 2013-07-03 | 北京阳光溢彩科技有限公司 | Ecological environment-friendly dust inhibitor |
| CN104479631A (en) * | 2014-12-09 | 2015-04-01 | 上海应用技术学院 | Dust suppressant as well as preparation method and application thereof |
| CN104817997A (en) * | 2015-03-30 | 2015-08-05 | 内蒙古博冉科技有限责任公司 | Solid dust suppressant |
| CN109609089A (en) * | 2018-10-09 | 2019-04-12 | 宁夏北极星化工有限公司 | A kind of coal dust depressor and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350319A (en) * | 2021-12-13 | 2022-04-15 | 煤炭科学技术研究院有限公司 | Dust suppressant for railway coal transportation and preparation method thereof |
| CN114350319B (en) * | 2021-12-13 | 2024-05-10 | 煤炭科学技术研究院有限公司 | Dust suppressant for railway coal transportation and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107955583B (en) | Efficient environment-friendly dust suppressant and preparation method and application thereof | |
| CN102660227B (en) | Road dust suppressant | |
| CN106833533B (en) | A kind of efficient and environment-friendly type dust suppressant and preparation method thereof, application | |
| CN107828381B (en) | Preparation method of natural environment-friendly surface dust suppression curing agent | |
| CN100537696C (en) | Railway coal transportation dust-depressor and manufacturing method thereof | |
| CN110373156A (en) | A kind of Environment-friendlywater-soluble water-soluble coheres type dust suppressant and preparation method thereof | |
| CN103074034A (en) | Dust suppression and antifreezing solution for coal transportation and preparation method thereof | |
| CN102433102A (en) | Adhesive dust suppressant for preventing coal dust from being produced in transportation of coal | |
| CN109652016A (en) | A kind of inhibition miberal powder and the dust suppressant of exposed ground dust and preparation method thereof | |
| CN101307235B (en) | Wind proof and sand-fixing dedusting agent | |
| CN112812744A (en) | Low-cost coal dust suppressant and preparation method thereof | |
| CN103045170B (en) | Method for preparing high-performance coal dust suppressant | |
| CN102585770A (en) | Dust suppressant for railway transportation of mineral powder and coal and preparation method of dust suppressant | |
| CN112080719A (en) | Multi-element alloy co-permeation agent for elastic strip and elastic strip surface composite corrosion prevention process | |
| CN103305189B (en) | Special dust-depressor for metal mineral powder and ores | |
| CN101381594A (en) | Anti-dust and anti-freeze agent for coal transportation and preparation method thereof | |
| CN104099066A (en) | Coal raised dust inhibitor and preparation method thereof | |
| CN104073223A (en) | Composite adhesive type dust flying inhibitor and preparation method thereof | |
| CN111139034A (en) | Dust suppressant for coal and iron ore powder storage yard roads and preparation method thereof | |
| CN102304349A (en) | Mineral powder railway transportation dust suppressant and preparation method thereof | |
| CN112175579A (en) | Green environment-friendly water-soluble dust suppressant for construction site and preparation method thereof | |
| CN103232834A (en) | Dual-component wetting and single-component curing-type antifreezing dust suppressant for coal transportation and storage | |
| CN114716973B (en) | Dust suppressant composition, and preparation method, application and use method thereof | |
| CN105038709A (en) | Windproof dust inhibitor used in coal yard and preparation method thereof | |
| CN102146279A (en) | Antifreeze solution for coal railway transportation and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210518 |
|
| RJ01 | Rejection of invention patent application after publication |