CN106221672B - A kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof - Google Patents
A kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof Download PDFInfo
- Publication number
- CN106221672B CN106221672B CN201610617996.XA CN201610617996A CN106221672B CN 106221672 B CN106221672 B CN 106221672B CN 201610617996 A CN201610617996 A CN 201610617996A CN 106221672 B CN106221672 B CN 106221672B
- Authority
- CN
- China
- Prior art keywords
- agent
- modifying agent
- snow agent
- corrosion inhibition
- hardness
- 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.)
- Active
Links
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
- C09K3/18—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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Combustion & Propulsion (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The present invention relates to a kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof, the hardness modifying agent each component by mass percentage, consisting of：Sodium alginate 0.5%~10%, molasses 40%~60%, polyvinylpyrrolidone 5%~20%, surplus are water；Preparation method is：Sodium alginate is added slowly in the water of stirring, forms solution；Polyvinylpyrrolidone is added in above-mentioned solution, stirred；Molasses are added in above-mentioned mixed solution again, stirs and produces hardness modifying agent.The hardness modifying agent good water solubility, mobility is good, easy to use, biodegradable, and the Snow Agent granule strength after improvement is high, effectively raises retention time of the Snow Agent in ice face, avoids quick loss of the Snow Agent during deicing or snow melting.
Description
Technical field
The present invention relates to a kind of preparation method of Snow Agent, and in particular to a kind of hardness improvement of high-efficient corrosion inhibition type type Snow Agent
Agent and preparation method thereof.
Background technology
Road snow mantle and icing are the common problems that China and middle high latitude country run into winter, and dispense Snow Agent to grasp
Make that simple, cost is low, advantage is widely used except speed of icing is fast, effect is good etc..Wherein removed by the inorganic of main component of villaumite
Its advantage of ice agent is that reserves are big, cheap, and snow melt effect is good and is widely used.But early stage largely uses villaumite type
Occurs a series of problem after Snow Agent, therefore the villaumite Snow Agent for developing high-efficient corrosion inhibition type type has critically important realistic meaning.
The solid villaumite type Snow Agent overwhelming majority that China is produced is to be granulated form, is granulated the Snow Agent of form in performance
Aspect has advantages below：1. compared to powdery or sheet Snow Agent, being granulated the product of form, there is stronger ice sheet to penetrate energy
Power.2. the moderate granulation Snow Agent of hardness can effectively avoid the efflorescence during production, packaging, transport and use.3. have
Effect avoids Snow Agent from largely being lumpd in storage process.4. during the use of product, it is adapted to large-scale machinery to shed work
Industry.
Due to itself there is certain active force between chlorination sodium molecule when simple NaCl type Snow Agent is granulated, make it
The hardness of product is higher.Want to alleviate the corruption brought to steel, bridge, automobile chassis during NaCl type Snow Agent use
Erosion, it is necessary to add corrosion inhibiter, but the addition of corrosion inhibiter can influence the active force between chlorination sodium molecule, cause product after being granulated
Hardness it is relatively low.
The defects of existing after being granulated for above-mentioned corrosion inhibition type Snow Agent in terms of hardness, develop the hard of high-efficient corrosion inhibition type type Snow Agent
Degree modifying agent turns into the task of top priority.
The content of the invention
It is an object of the invention to provide a kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof, make it
While corrosion mitigating effect is met, it can effectively improve the hardness after Snow Agent is granulated.Snow Agent hardness modifying agent of the present invention
Preparation carry out at normal temperatures and pressures, and its good water solubility, mobility is good, in use, can directly lead to without heating
Shower nozzle spray is crossed into spacetabs type Snow Agent material, agitated device enters comminutor after being mixed and is granulated, this method operation letter
Single, dosage is small, and product per ton only needs 10~12 kilograms of hardness modifying agent cans to produce the regular Snow Agent particle of form.Make
The Snow Agent granule strength not only produced with the hardness modifying agent is high, it is not easy during production, transport and storage
Efflorescence, be advantageous to the extensive machinery of product and shed operation, and its adhesive property can effectively improve Snow Agent in ice face
Retention time, avoid quick loss of the Snow Agent during deicing or snow melting.
The present invention solves technical problem by the following technical programs：The hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent, under
The component for stating quality proportioning is prepared：
Sodium alginate 0.5%~10%
Molasses 40%~60%
Polyvinylpyrrolidone 5%~20%
Surplus is water, and above-mentioned each component sum is 100%.
The preparation method of the hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent of the present invention, its step of preparation process are：
(1), sodium alginate is added slowly in the water of stirring, forms solution A；
(2), polyvinylpyrrolidone is added in above-mentioned solution A, is uniformly mixing to obtain mixed solution B；
(3), molasses are added in above-mentioned mixed solution B, are uniformly mixing to obtain the hardness modifying agent of Snow Agent.
Wherein, above-mentioned molasses are the molasses of cane sugar factory.
The application process that the hardness modifying agent of Snow Agent of the present invention is used for high-efficient corrosion inhibition type type Snow Agent is as follows：
Sodium chloride, high-efficient corrosion inhibitor and the hardness modifying agent of required weight, compound are weighed using belt at room temperature
It is delivered to through one-level conveying worm in mixer and is stirred mixing, then is carried respectively by deuterostrophies conveyer, raw material bucket
Machine and rubber conveyer are delivered in feed bin, and mixed-powder then is delivered into comminutor again carries out molding, granulating, then by making
The particle that grain machine is formed is directly entered swinging screen screening, and finished product screen is branched away through belt conveying and packaging, i.e., efficiently delayed
Release type Snow Agent.Defective work is delivered to one-level conveying worm by feed back bucket elevator again and carries out co-grinding again into granulation
Machine is granulated again.
The main drop freezing point composition of the Snow Agent is sodium chloride, and vacuum salt is refined for middle salt Jintan；The high-efficient corrosion inhibition type
Agent is made up of sodium gluconate, zinc dihydrogen phosphate, nine silicate hydrate disodiums and sodium lignin sulfonate.
The high-efficiency sustained-release type Snow Agent is graininess, and its particle size is about 6mm × 6mm × 4mm.
Compared with prior art, its remarkable advantage is the present invention：(1) hardness modifying agent good water solubility prepared by the present invention,
It is easy to use, it is simple to operate；(2) the hardness modifying agent dosage is small, and product per ton only needs 10~12 kilograms of hardness modifying agents just
The Snow Agent particle of form rule can be produced；(3) adhesive property of the hardness modifying agent can effectively improve Snow Agent and exist
The retention time of ice face, avoid quick loss of the Snow Agent during deicing or snow melting；(4) it is suitable for a variety of granulation modes,
Such as to roller gear granulation and disc granulation；(5) when being used for high-efficiency sustained-release type Snow Agent, the primary raw material used is given birth to for our company
The high purity vacuum salt sodium chloride of production, there is the features such as wide material sources, cheap, relatively low sulfate ion, and add high
The corrosion inhibiter of effect, the corrosion to metal and cement concrete can be effectively reduced；The Snow Agent granule strength formed is high, average
Breaking strength is up to 40N.
Embodiment
The following examples can make those skilled in the art that the present invention be more fully understood, but these embodiments are not
Limiting the scope of the invention.
1. the formula composition of the hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent
Table 1 lists 5 kinds and represents embodiment and blank sample, wherein described numerical value refers to each component in hardness modifying agent
Mass percent.
The hardness improvement agent prescription composition of the high-efficient corrosion inhibition type type Snow Agent of table 1
| Formula composition | Blank sample | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Sodium alginate | 0 | 0.5 | 2 | 5 | 8 | 10 |
| Molasses | 0 | 40 | 60 | 50 | 40 | 60 |
| Polyvinylpyrrolidone | 0 | 5 | 20 | 10 | 10 | 5 |
| Water | 100 | 54.5 | 18 | 35 | 42 | 25 |
2. the hardness of Snow Agent
The hardness modifying agent and corrosion inhibiter of above-mentioned 5 kinds of embodiments and the high-efficient corrosion inhibition type type Snow Agent of a kind of blank sample are added
It is added in sodium chloride, carries out being granulated preparation high-efficient corrosion inhibition type type Snow Agent material, the wherein addition of hardness modifying agent is 1%, is delayed
The addition for losing agent is 0.5%, and the component of corrosion inhibiter includes sodium gluconate, zinc dihydrogen phosphate, nine silicate hydrate disodiums and wood
Quality sodium sulfonate.10 are randomly selected in the product~20 Snow Agent products, (generally, taking 15), its particle is placed in
In hardometer sample groove, by top knob, down force, until by Particle Crush, direct reading, record data.Finally
Calculate the hardness average value for taking Snow Agent sample.
The hardness calculation formula of Snow Agent sample is as follows：
N=(N1+N2+N3+┄+N15)/15
In formula：N1The compression strength of ----single salt particle, N
Each embodiment hardness test result is as shown in table 2：
The experiment of hardness result of the high-efficient corrosion inhibition type type Snow Agent of table 2
| Formula composition | Blank sample | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Average hardness/N | 18 | 26 | 39 | 45 | 31 | 33 |
3. the carbon steel corrosion rate of Snow Agent
To determine the effect of corrosion inhibiter, the selection of component, test are carried out with reference to DB11/T 161-2012 rotary hanging plate method
Method and test condition are as follows：
Etchant solution is prepared first, the test solution that mass fraction is about 18.0% is prepared in 2000mL beaker, wherein melting
The usage amount of sodium chloride is about 309g in snow agent, and hardness improvement agent content is matched by (table 1) mass component in embodiment, firmly
The addition for spending modifying agent is 1%, and the addition of corrosion inhibiter is 0.5%.
Sample is No. 20 carbon steel coupons (GB/T 699) of rectangle, and size is:5mm × 2.5mm × 0.2mm, surface area are
28mm2, sample wipes surface grease with filter paper before experiment, dried after acetone and soaked in absolute ethyl alcohol, finally by sample by
It is individual to be wrapped up with filter paper, it is placed in standby in drier.Experiment start after with being soaked in corresponding volume after assay balance correct amount sample
Number etchant solution in, liquor capacity and test piece area ratio are 24mL/cm2 ~26mL/cm2, experimental temperature is 40 DEG C, test piece line
Speed is 0.35m/s, during be not passed through air, after uninterrupted immersion 48 hours, wipe out surface iron rust again through pickling, alkali
Wash, remove excessive moisture with absolute ethyl alcohol after washing, weighed after drying.Corrosion inhibition rate is determined according to corrosion weight loss.Rate of corrosion calculates
Formula is as follows：
In formula：M is test piece mass loss, g；
m1For the mass loss average value of test piece pickling blank test, g；
S be test piece surface area, cm2；
ρ be test piece density, g/cm3；
T is test period, h；
8760 be the hourage suitable with 1 year, h/a；
10 be the millimeter suitable with 1cm, mm/cm.
The corrosion inhibition rate X being expressed as a percentage2：
In formula：X0For the rate of corrosion of test piece blank test, mm/a；
X1For the rate of corrosion of test piece, mm/a.
Each embodiment corrosion of carbon steel result is as shown in table 3：
The corrosion of carbon steel experimental result of the high-efficient corrosion inhibition type type Snow Agent of table 3
Corrosion of carbon steel rate of the addition to Snow Agent product of hardness modifying agent is can be seen that from the corrosion of carbon steel result of table 3
Serve certain inhibitory action.
4. the ice face reserve capability of Snow Agent
The ice face reserve capability of measure Snow Agent, the i.e. Snow Agent of measure certain mass are within the unit interval not with thawing
The ratio that frozen water flows away.Experimental method is as follows：
The beaker of six 50mL same diameters and height is taken, adds 20mL water, is placed in -10 DEG C of cryostat to knot
Ice.It is accurate weigh containing five parts of embodiment sample and blank sample each 5g of Snow Agent (wherein hardness improvement agent prescription such as table 1,
It is added to 1% addition in sodium chloride, adds 0.5% corrosion inhibiter) it is placed in ice cube surface.Start timing, exist respectively
30min, 60min, 120min and 240min take out the sample bottle, topple over its liquid immediately, determine the volume and liquid of liquid
The solubility of middle sodium chloride, by the ice face reserve capability that Snow Agent is calculated.
Computational methods are as follows：
In formula：m0Initially to launch the gross mass of the Snow Agent in ice face, g；
c1For the concentration of the Snow Agent in the frozen water that is determined in the unit time, g/mL；
v1For the volume of the frozen water determined in the unit time, mL；
η be Snow Agent ice face reserve capability, %；
The ice face reserve capability of the Snow Agent of each embodiment is as shown in table 4：
The ice face reserve capability experimental result of the high-efficient corrosion inhibition type type Snow Agent of table 4
It can be seen that from the ice face reserve capability of each embodiment and blank sample Snow Agent of table 4 and with the addition of hardness modifying agent
After, due to the raising of the adhesive property of itself, be advantageous to extend Snow Agent in the retention time of ice face, prevent it with thawing
Ice and snow flow away.
5. the deicing or snow melting ability of Snow Agent
According to the method for testing of deicing or snow melting ability in Snow Agent Beijing standard (DB/11/T 161-2012), weigh respectively
Sample is configured to corresponding solution according to using solubility, and the solubility used in this experiment is 18%.
The beaker of six 50mL same diameters and height is taken, adds 15mL water, is placed in -10 DEG C of cryostat to knot
Ice, pipetting 25mL snow melts agent solution, (wherein hardness improvement agent prescription such as table 1, sodium chloride is added to by it with 1% addition
In, add 0.5% corrosion inhibiter), move into 50mL beakers in, be placed in -10 DEG C of cryostat, it is standby after 12h.From low
The sample bottle with ice cube is taken out in warm insulating box, dries the water and ice of outer wall, it is rapid to weigh, 0.1g is accurate to, by preparation
Snow melt agent solution is poured into rapidly in the sample bottle for filling ice cube, is then put back in cryostat, respectively at 15 minutes, 30 points
Clock, take out the sample bottle within 60 minutes, topple over its liquid immediately, and weigh the quality of beaker and remaining ice cube rapidly.Embodiment 1 is molten
The operating procedure of liquid is the same as blank sample solution-operated step.Each temperature deicing or snow melting capacity data of gained is as shown in table 5 below：
The Snow Agent of table 5 deicing or snow melting ability at -10 DEG C
As seen from Table 5, within 60min, with the addition of deicing or snow melting ability that the Snow Agent of hardness modifying agent shows compared with
Difference, and obvious advantage is then shown after 60min, after 240min, the Snow Agent that with the addition of hardness modifying agent is melted
Snowization ice ability is more stronger than blank sample.
Claims (6)
- A kind of 1. hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent, it is characterised in that：The hardness modifying agent each component presses quality Percentage consisting of：Sodium alginate 0.5%~10%, molasses 40%~60%, polyvinylpyrrolidone 5%~20% are remaining Measure as water.
- 2. the hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent according to claim 1, it is characterised in that：Described molasses are The molasses of cane sugar factory.
- 3. the preparation method of the hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent according to claim 1, it is characterised in that：Institute It is as follows to state preparation method step：(1) sodium alginate is added slowly in the water of stirring, forms solution A；(2) polyvinylpyrrolidone is added in solution A, is uniformly mixing to obtain mixed solution B；(3) molasses are added in mixed solution B, is uniformly mixing to obtain the hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent.
- 4. application process of the hardness modifying agent according to claim 1 in high-efficient corrosion inhibition type type Snow Agent, it is characterised in that： The application process is as follows：Sodium chloride, corrosion inhibiter and the hardness modifying agent of required weight are weighed using belt at room temperature, compound is through one-level spiral shell Rotation conveyer, which is delivered in mixer, is stirred mixing, then passes through deuterostrophies conveyer, raw material bucket elevator and adhesive tape respectively Conveyer is delivered in feed bin, and mixed-powder then is delivered into comminutor again carries out molding, granulating, and the particle through molding, granulating is straight Tap into and sieved into swinging screen, finished product screen is branched away through belt conveying and packaging, that is, obtains Snow Agent product；Defective work passes through again Feed back bucket elevator is delivered to one-level conveying worm progress co-grinding and is granulated again into comminutor.
- 5. application process of the hardness modifying agent according to claim 4 in high-efficient corrosion inhibition type type Snow Agent, it is characterised in that： Described sodium chloride is that middle salt Jintan refines vacuum salt；High-efficient corrosion inhibitor is by sodium gluconate, zinc dihydrogen phosphate, nine silicate hydrates Disodium and sodium lignin sulfonate composition.
- 6. application process of the hardness modifying agent according to claim 4 in high-efficient corrosion inhibition type type Snow Agent, it is characterised in that： Described high-efficient corrosion inhibition type type Snow Agent is graininess, and its particle size is 6mm × 6mm × 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610617996.XA CN106221672B (en) | 2016-07-29 | 2016-07-29 | A kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610617996.XA CN106221672B (en) | 2016-07-29 | 2016-07-29 | A kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106221672A CN106221672A (en) | 2016-12-14 |
| CN106221672B true CN106221672B (en) | 2017-12-22 |
Family
ID=57534822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610617996.XA Active CN106221672B (en) | 2016-07-29 | 2016-07-29 | A kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106221672B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107325791A (en) * | 2017-07-17 | 2017-11-07 | 中盐金坛盐化有限责任公司 | A kind of ice hardness modifying agent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2849810A1 (en) * | 1978-11-16 | 1980-05-22 | Floralis Chemisch Tech Produkt | Snow and ice thawing agent - with high, long lasting thawing power and rate contains urea, abrasive, pref. pumice, and calcium chloride |
| US4391859A (en) * | 1974-07-10 | 1983-07-05 | Ab Bonnierforetagen | Process and a composition for the insulation of surfaces, and product hereby obtained |
| CN1338497A (en) * | 2001-09-28 | 2002-03-06 | 岳中州 | Snow thawing agent, its preparing process and multi-stage spray granulating bed |
| CN1347948A (en) * | 2001-11-13 | 2002-05-08 | 天津市长芦精细生化有限公司 | Compound snow-melting antifreezer and its production process |
| CN103289645A (en) * | 2013-07-01 | 2013-09-11 | 句容宁武高新技术发展有限公司 | Manufacturing method of environment-friendly snow/ice melting composition |
-
2016
- 2016-07-29 CN CN201610617996.XA patent/CN106221672B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4391859A (en) * | 1974-07-10 | 1983-07-05 | Ab Bonnierforetagen | Process and a composition for the insulation of surfaces, and product hereby obtained |
| DE2849810A1 (en) * | 1978-11-16 | 1980-05-22 | Floralis Chemisch Tech Produkt | Snow and ice thawing agent - with high, long lasting thawing power and rate contains urea, abrasive, pref. pumice, and calcium chloride |
| CN1338497A (en) * | 2001-09-28 | 2002-03-06 | 岳中州 | Snow thawing agent, its preparing process and multi-stage spray granulating bed |
| CN1347948A (en) * | 2001-11-13 | 2002-05-08 | 天津市长芦精细生化有限公司 | Compound snow-melting antifreezer and its production process |
| CN103289645A (en) * | 2013-07-01 | 2013-09-11 | 句容宁武高新技术发展有限公司 | Manufacturing method of environment-friendly snow/ice melting composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106221672A (en) | 2016-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106190034B (en) | A kind of compound chloride-based type deicing salt of high-efficient corrosion inhibition type and preparation method thereof | |
| CN105860931A (en) | Efficient corrosion-inhibiting anti-freezing deicing agent and preparation method thereof | |
| US6849199B2 (en) | Snow and ice-melting granules and method for preparing same | |
| CN104829157B (en) | A kind of freeze proof material of the temperature sensitive type for bituminous paving and preparation method thereof | |
| CN104774592B (en) | Freeze proof material of a kind of spacetabs type for bituminous paving and preparation method thereof | |
| US2382163A (en) | Detergent briquette | |
| KR20180042785A (en) | Eco-friendly pre-wetted salt deicer and manufacturing method thereof | |
| CN106221672B (en) | A kind of hardness modifying agent of high-efficient corrosion inhibition type type Snow Agent and preparation method thereof | |
| KR20180121148A (en) | Eco-friendly pre-wetted salt deicer and manufacturing method thereof | |
| CN111117572A (en) | Composite phase-change material and preparation method thereof | |
| CN108997972B (en) | Non-chlorine snow-melting agent and its preparation method | |
| CN102002341B (en) | Soil self-repairing type environmentally-friendly snow melting agent and preparation method thereof | |
| CN109321205A (en) | A kind of environment protection snow-dissolved agent and preparation method thereof | |
| KR101905149B1 (en) | Eco-Friendly Solid Type Deicer composition and manufacturing method thereof | |
| CN104710242A (en) | Production technique for producing paste water-soluble fertilizer by energy-saving liquid-phase process and product thereof | |
| CN110395929A (en) | A kind of phosphogypsum modification cement retarder | |
| CN1804046A (en) | Steel slag release agent | |
| CN106398649A (en) | Method for preparation of calcium magnesium hydrochloride snow-melting agent from two-alkali salt sludge | |
| CN101279860B (en) | Method for improving appearance quality of granules made from diammonium phosphate slurry | |
| KR102008957B1 (en) | Eco-Friendly Deicer composition and manufacturing method thereof | |
| CN107353877A (en) | A kind of liquid anti-ice-snow material and its method is applied in combination with solid ice-melt snow material | |
| CN106867456A (en) | A kind of high-efficient corrosion inhibition type villaumite type Snow Agent | |
| CN106634838A (en) | Method for preparing environment-friendly snow-melting agent with iron and aluminum extracted from red mud and application of environment-friendly snow-melting agent | |
| CN210496461U (en) | System for washing ion exchange column | |
| US2792345A (en) | Method for infiltration of trace material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |