CN108300416A - A kind of deicing salt and preparation method thereof to carbon steel with corrosion inhibition - Google Patents
A kind of deicing salt and preparation method thereof to carbon steel with corrosion inhibition Download PDFInfo
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- CN108300416A CN108300416A CN201810196140.9A CN201810196140A CN108300416A CN 108300416 A CN108300416 A CN 108300416A CN 201810196140 A CN201810196140 A CN 201810196140A CN 108300416 A CN108300416 A CN 108300416A
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- screenings
- deicing salt
- magnesium chloride
- carbon steel
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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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
- C23F11/184—Phosphorous, arsenic, antimony or bismuth containing compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a kind of deicing salts to carbon steel with corrosion inhibition comprising according to 10:100~15:The hydrated magnesium chloride and sodium pyrophosphate that 100 mass ratio is mixed and is granulated.The present invention is mixed with hydrated magnesium chloride using specific incorporation using sodium pyrophosphate as carbon steel corrosion inhibitor and is obtained novel deicing salt, which has good corrosion inhibition to carbon steel；NaCl type deicing salt in compared with prior art, the deicing salt can protect carbon steel from corrosion to the maximum extent.The invention also discloses the above-mentioned preparation methods to deicing salt of the carbon steel with corrosion inhibition.
Description
Technical field
The invention belongs to deicing salt preparing technical fields, it relates in particular to which a kind of there is corrosion inhibition to melt carbon steel
Avenge agent and the preparation method of the deicing salt.
Background technology
China starts from middle and later periods nineteen nineties in terms of the research except ice and snow melting agent, mainly studies deicing
Main component, main matter ratio and the reduction of deicing salt use the additive that natural ecological environment influences, and will reasonably lead
Ingredient is wanted to be prepared, it is therefore an objective to the negative effect that NaCl type deicing salt generates the natural ecological environment of surrounding can be made to drop
It is low, such as reduce to road, corrosivity and to the influence of animals and plants.In phase later 1990s, mainly
The research in terms of organic acid salt form deicing salt is carried out, such as the research of the compound prescription of sodium acetate, but due to the type deicing salt
Price it is higher, used there is no extensive.
Since NaCl type removes the negative effect that ice and snow melting agent can be brought in deicing or snow melting, some American-European countries are more early
Ground has started the research except ice and snow melting agent for novel, it is novel except ice and snow melting agent should have the characteristics that it is following some：First,
There is no harm to the health of people；Second, corrosivity and smaller to the damage effect of infrastructure after snow melt；The
Three, when carrying out deicing or snow melting deicing salt to animals and plants and around ecological environment negative effect it is smaller；4th, to have very
The effect of good deicing snow melt becomes the substitute that NaCl type removes ice and snow melting agent, while also to have rational cost performance,
It cannot pay through the nose because this deicing salt is produced.For this purpose, phase later 1980s, in the U.S. with regard to oneself warp
Proceeding by the experiment of villaumite on probation resistance rust type deicing salt, villaumite resistance rust type deicing salt is a kind of compound snow melt preparation, 20
Century the nineties with regard to oneself through accounting for the 4% of the total dosage in the U.S., to show remove ice and snow melting agent development new direction；Meanwhile
It it is about 1,000,000 tons in the usage amount of Germany, the usage amount that rust type deicing salt is hindered in Britain's villaumite is 870,000 tons, in method
The usage amount of state is 330,000 tons.The Soul area of South Korea and the northern of Japan are also using sodium chloride and calcium chloride complex
At remove ice and snow melting agent, raw material mainly from the Tangshan in China, Lianyungang of Jiangsu, the import of Qingdao Zhi Gai factories,
Stringent control can be all carried out in the range that uses, quantity.
In the 1980s, whether American-European or East Asia Region will be all placed on except the research purpose of ice and snow melting agent
Based on villaumite type except in the improvement of ice and snow melting agent, the compound research except ice and snow melting agent and its substitute of research；And
Phase later 1980s to the nineties initial stage, some American-European developed countries oneself through the acetate form snow melt that begins one's study
Agent.As German Hoechst Aktiengesellschaft (DE) in 1992 has developed with the liquid snow removing of acetate and by means of the liquid of the acetate
Body preparation, main component are the mixed type product of sodium acetate, potassium acetate either the two；The U.S. is to magnesium salts type, calcium salt type, vinegar
The ice and snow melting agent that removes of additive is added in hydrochlorate type, either in the range used, quantity and stringent control is all taken on the time
System.
Invention content
To solve the above-mentioned problems of the prior art, the present invention provides a kind of snow melts to carbon steel with corrosion inhibition
Agent, the deicing salt relatively have carbon steel with sodium chloride deicing salt in the prior art under concentration and magnesium chloride deicing salt good slow
Erosion acts on.
In order to reach foregoing invention purpose, present invention employs the following technical solutions：
A kind of deicing salt to carbon steel with corrosion inhibition, including according to 10:100~15:100 mass ratio mixing is simultaneously
The hydrated magnesium chloride and sodium pyrophosphate of granulation.
Further, the quantity of the crystallization water in the hydrated magnesium chloride is 3 and/or 4.
Another object of the present invention is to provide the preparation methods of a kind of as above any deicing salt, including step：
S1, hydrated magnesium chloride block material is crushed to after grain size is 2cm~5cm and is once sieved, obtain the first sieve
Upper object and the first screenings；Wherein, the aperture of primary screening sieve used is the mesh of 20 mesh~40；
S2, first screenings is dehydrated at 110 DEG C~130 DEG C, obtains dry screenings；
S3, the dry screenings is subjected to regrading, obtains the second oversize and the second screenings；Wherein, secondary
The aperture of screening sieve used is 40 mesh；
S4, by second screenings and sodium pyrophosphate according to 100:10~100:15 mass ratio mixing, is mixed
Close object；
S5, the mixture is granulated, obtains hybrid particles；Wherein, it is 5mm~8mm to be granulated predetermined size；
S6, the hybrid particles are sieved three times, third oversize and third screenings is obtained, under the third is sieved
Object is packaged to obtain the deicing salt；Wherein, the aperture for sieving sieve used three times is 8mm.
Further, the hydrated magnesium chloride block material is bischofite.
Further, in the step S1, first oversize is incorporated in the hydrated magnesium chloride block material
It is crushed again.
Further, in the step S3, second oversize is incorporated in the hydrated magnesium chloride block material
It is crushed again.
Further, in the step S6, the third oversize is back in the step S4.
The present invention is mixed with hydrated magnesium chloride using specific incorporation and is obtained using sodium pyrophosphate as carbon steel corrosion inhibitor
Novel deicing salt, the deicing salt have good corrosion inhibition to carbon steel；NaCl type deicing salt in compared with prior art,
The deicing salt can protect carbon steel from corrosion to the maximum extent, to get up protective effect to building.
Description of the drawings
What is carried out in conjunction with the accompanying drawings is described below, above and other aspect, features and advantages of the embodiment of the present invention
It will become clearer, in attached drawing：
Fig. 1 is the processing route figure of the preparation method of the deicing salt to carbon steel with corrosion inhibition according to the present invention；
Fig. 2 is the TG-DTA curves of bischofite according to the present invention.
Specific implementation mode
Hereinafter, with reference to the accompanying drawings to detailed description of the present invention embodiment.However, it is possible to come in many different forms real
The present invention is applied, and the present invention should not be construed as limited to the specific embodiment illustrated here.On the contrary, providing these implementations
Example is in order to explain the principle of the present invention and its practical application, to make others skilled in the art it will be appreciated that the present invention
Various embodiments and be suitable for the various modifications of specific intended application.In the accompanying drawings, for the sake of clarity, element can be exaggerated
Shape and size, and identical label will be used to indicate same or analogous element always.
Term " first ", " second " etc. herein can be used to describe various substances although will be appreciated that, these
Substance should not be limited by these terms.These terms are only used to distinguish a substance with another substance.
The invention discloses a kind of deicing salts to carbon steel with corrosion inhibition, which includes according to 10:100~
15:The hydrated magnesium chloride and sodium pyrophosphate that 100 mass ratio is mixed and is granulated.
Preferably, the quantity of the crystallization water wherein in hydrated magnesium chloride is 3 and/or 4.
Illustrate the preparation method of the above-mentioned deicing salt of the present invention below in conjunction with the processing route figure in Fig. 1；Specifically, the system
Preparation Method includes the following steps：
In step sl, hydrated magnesium chloride block material is crushed to after grain size is 2cm~5cm and is once sieved, obtained
Obtain the first oversize and the first screenings.
Specifically, the aperture of primary screening sieve used is the mesh of 20 mesh~40.
Hydrated magnesium chloride block material is preferably bischofite herein；In this way, being made with a large amount of bischofites of salt lake by-product
For raw material, the manufacturing cost of deicing salt is on the one hand significantly reduced, on the other hand can also reduce a large amount of by-product bischofites brings
Salt lake resources imbalance problem.
Preferably, the first oversize need to again be incorporated in hydrated magnesium chloride block material and is crushed again.
In step s 2, the first screenings is dehydrated at 110 DEG C~130 DEG C, obtains dry screenings.
Thermogravimetric analysis-differential thermal analysis (hereinafter referred to as TG-DTA) has been carried out to bischofite；Specifically, using program control
Wen Yi is respectively set as 69 DEG C, 129 DEG C, 167 DEG C, 181 DEG C, 203 DEG C, 235 DEG C and 415 DEG C and carries out calcining at constant temperature, until sample
Product constant weight；The corresponding TG-DTA figures obtained are as shown in Figure 2.
Figure it is seen that the main calcined product at 69 DEG C is MgCl2·4H2O；Main calcined product at 129 DEG C
For MgCl2·2H2O, and part MgCl2·4H2O and MgCl2·6H2O illustrates MgCl at this temperature2·6H2O be dehydrated anti-
It answers, generates MgCl2·2H2O；Main calcined product at 167 DEG C and at 181 DEG C is MgOHCl and partial MgCl2·
nH2O (n=1,4,6), illustrates MgCl at this temperature2·6H2O has started to hydrolyze, and dehydration is existed simultaneously with hydrolysis, generates
MgOHCl and MgCl2·nH2O；Main calcined product at 203 DEG C is Mg (OH) Cl0.3H2O and MgOHCl；At 235 DEG C
Main calcined product is MgOHCl；Calcined product at 415 DEG C is MgO.
By studying above it is found that in the actual production process, two kinds of substances can be thermally decomposed into 130 DEG C or more raw materials, one
Part is MgCl2·2H2O, a part are indissoluble object MgOHCl, can weaken the snow melt effect of magnesium chloride, this constituents of a mixture
It is that deicing salt institute is unwanted；Therefore, in order to obtain the chlorination magnesium raw material of 4 crystallizations water and 2 crystallizations water, and temperature mistake is avoided
Height makes raw material excessive decomposition at MgCl2·nH2The mixture of O and MgOHCl, thus dehydration and drying temperature control 110 DEG C~
It is ideal between 130 DEG C.
In step s3, dry screenings is subjected to regrading, obtains the second oversize and the second screenings.
Specifically, the aperture of sieve used in regrading is 40 mesh.
Preferably, the second oversize need to be incorporated in hydrated magnesium chloride block material and is crushed again.
In step s 4, by the second screenings and sodium pyrophosphate according to 100:10~100:15 mass ratio mixing, is obtained
Obtain mixture.
In step s 5, mixture is granulated, obtains hybrid particles.
Specifically, it is 5mm~8mm to be granulated predetermined size.
In step s 6, hybrid particles are sieved three times, third oversize and third screenings is obtained, under third is sieved
The packaged acquisition deicing salt of object.
Specifically, the aperture for sieving sieve used three times is 8mm.
Preferably, third oversize need to be back in step S4 row again and carry out mixing granulation.
In order to illustrate the above-mentioned acquisition of the present invention deicing salt to the corrosion inhibition of carbon steel, which is configured to quality hundred
Score is respectively 0.2%, 0.4%, 0.6%, 0.8% 4 kind of solution, and be applied on carbon steel respectively.
Specifically, each concentration corresponds on the Q235 steel discs that a block size is 50mm × 25mm × 2mm, by number
Steel disc weighs weight, is put into the plastic bottle of reference numeral, prepared above-mentioned four kinds of solution is poured into corresponding measuring cup,
Solution all submerges steel disc, records the time, and test period is 14 days；It is taken out after 14 days, first uses the NaOH liquid of 2mol/L by steel
The rust on piece surface removes, and is rinsed well with clear water, after cleaned with hydrochloric acid, then cleaned up with clear water, deionized water, put by number
Enter to be transferred to constant temperature in drier after baking oven is dried in 100 DEG C and weigh, records weight.
Make blank experiment simultaneously, experimental method is same as above (blank solution is water), to eliminate the moisture pair in natural conditions
The corrosion impact of steel disc.
At the same time, sodium chloride deicing salt and magnesium chloride deicing salt in the prior art is chosen to carry out respectively as control group
Contrast experiment.
Comparative example 1
Prepare the sodium chloride solution of same concentration respectively, i.e. the mass percent of sodium chloride solution is respectively 0.2%, 0.4%,
0.6%, 0.8%.
Influence to steel disc is recorded using method identical with above-mentioned experimental group.
Comparative example 2
Prepare the magnesium chloride solution of same concentration respectively, i.e. the mass percent of magnesium chloride solution is respectively 0.2%, 0.4%,
0.6%, 0.8%.
Influence to steel disc is recorded using method identical with above-mentioned experimental group.
Above-mentioned blank group, experimental group, comparative example 1, the experimental result of comparative example 2 are as shown in table 1, and data indicate rotten in table 1
Eclipse factor is the data after corrosion weight loss.
Table 1
From the data comparison of table 1, it can be seen that deicing salt general deicing salt pair more in the prior art according to the present invention
Carbon steel has good corrosion inhibition.
Although the present invention has shown and described with reference to specific embodiment, it should be appreciated by those skilled in the art that：
In the case where not departing from the spirit and scope of the present invention limited by claim and its equivalent, can carry out herein form and
Various change in details.
Claims (7)
1. a kind of deicing salt to carbon steel with corrosion inhibition, which is characterized in that including according to 10:100~15:100 quality
The hydrated magnesium chloride and sodium pyrophosphate that ratio is mixed and is granulated.
2. deicing salt according to claim 1, which is characterized in that the quantity of the crystallization water in the hydrated magnesium chloride is 3
It is a and/or 4.
3. the preparation method of deicing salt as claimed in claim 1 or 2, which is characterized in that including step：
S1, hydrated magnesium chloride block material is crushed to after grain size is 2cm~5cm and is once sieved, obtain the first oversize
With the first screenings；Wherein, the aperture of primary screening sieve used is the mesh of 20 mesh~40；
S2, first screenings is dehydrated at 110 DEG C~130 DEG C, obtains dry screenings；
S3, the dry screenings is subjected to regrading, obtains the second oversize and the second screenings；Wherein, regrading
The aperture of sieve used is 40 mesh；
S4, by second screenings and sodium pyrophosphate according to 100:10~100:15 mass ratio mixing, obtains mixture；
S5, the mixture is granulated, obtains hybrid particles；Wherein, it is 5mm~8mm to be granulated predetermined size；
S6, the hybrid particles are sieved three times, obtains third oversize and third screenings, the third screenings warp
Packaging obtains the deicing salt；Wherein, the aperture for sieving sieve used three times is 8mm.
4. preparation method according to claim 3, which is characterized in that the hydrated magnesium chloride block material is water chlorine magnesium
Stone.
5. preparation method according to claim 3 or 4, which is characterized in that in the step S1, will be on first sieve
Object is incorporated in the hydrated magnesium chloride block material and is crushed again.
6. preparation method according to claim 3 or 4, which is characterized in that in the step S3, will be on second sieve
Object is incorporated in the hydrated magnesium chloride block material and is crushed again.
7. preparation method according to claim 3 or 4, which is characterized in that, will be on third sieve in the step S6
Object is back in the step S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196140.9A CN108300416A (en) | 2018-03-09 | 2018-03-09 | A kind of deicing salt and preparation method thereof to carbon steel with corrosion inhibition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196140.9A CN108300416A (en) | 2018-03-09 | 2018-03-09 | A kind of deicing salt and preparation method thereof to carbon steel with corrosion inhibition |
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| CN108300416A true CN108300416A (en) | 2018-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810196140.9A Pending CN108300416A (en) | 2018-03-09 | 2018-03-09 | A kind of deicing salt and preparation method thereof to carbon steel with corrosion inhibition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410278A (en) * | 2022-01-06 | 2022-04-29 | 地矿集团格尔木盐湖资源开发有限公司 | Environment-friendly snow-melting agent and preparation and use methods thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0835919A1 (en) * | 1996-10-14 | 1998-04-15 | Mastra di Palieri L. & C. s.a.s. | Corrosion-inhibiting additive for sodium chloride-based antifreeze preparations for treating road surfaces, and antifreeze preparation containing said additive |
| CN105331333A (en) * | 2015-12-03 | 2016-02-17 | 天津长芦汉沽盐场有限责任公司 | Production method for mixed snow-melting agent |
| CN105349103A (en) * | 2015-12-03 | 2016-02-24 | 天津长芦汉沽盐场有限责任公司 | Method for preparing compound snow melting agent |
| CN107236523A (en) * | 2017-07-25 | 2017-10-10 | 中国科学院青海盐湖研究所 | The preparation method of magnesium dichloride-based Snow Agent |
| CN107381606A (en) * | 2017-07-25 | 2017-11-24 | 中国科学院青海盐湖研究所 | The preparation method of incomplete dehydration magnesium chloride Snow Agent |
-
2018
- 2018-03-09 CN CN201810196140.9A patent/CN108300416A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0835919A1 (en) * | 1996-10-14 | 1998-04-15 | Mastra di Palieri L. & C. s.a.s. | Corrosion-inhibiting additive for sodium chloride-based antifreeze preparations for treating road surfaces, and antifreeze preparation containing said additive |
| CN105331333A (en) * | 2015-12-03 | 2016-02-17 | 天津长芦汉沽盐场有限责任公司 | Production method for mixed snow-melting agent |
| CN105349103A (en) * | 2015-12-03 | 2016-02-24 | 天津长芦汉沽盐场有限责任公司 | Method for preparing compound snow melting agent |
| CN107236523A (en) * | 2017-07-25 | 2017-10-10 | 中国科学院青海盐湖研究所 | The preparation method of magnesium dichloride-based Snow Agent |
| CN107381606A (en) * | 2017-07-25 | 2017-11-24 | 中国科学院青海盐湖研究所 | The preparation method of incomplete dehydration magnesium chloride Snow Agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410278A (en) * | 2022-01-06 | 2022-04-29 | 地矿集团格尔木盐湖资源开发有限公司 | Environment-friendly snow-melting agent and preparation and use methods thereof |
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Application publication date: 20180720 |