CN113292170A - Anti-hardening agent for blast furnace slag treatment system by bottom filtration method, preparation method and application thereof - Google Patents
Anti-hardening agent for blast furnace slag treatment system by bottom filtration method, preparation method and application thereof Download PDFInfo
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- CN113292170A CN113292170A CN202110640819.4A CN202110640819A CN113292170A CN 113292170 A CN113292170 A CN 113292170A CN 202110640819 A CN202110640819 A CN 202110640819A CN 113292170 A CN113292170 A CN 113292170A
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- blast furnace
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- furnace slag
- carbonate
- treatment system
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- 239000002893 slag Substances 0.000 title claims abstract description 52
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 40
- 238000001914 filtration Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 26
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 19
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 13
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims abstract description 9
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- ZMYKITJYWFYRFJ-UHFFFAOYSA-N 4-oxo-4-(2-phenylethylamino)butanoic acid Chemical group OC(=O)CCC(=O)NCCC1=CC=CC=C1 ZMYKITJYWFYRFJ-UHFFFAOYSA-N 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000001509 sodium citrate Substances 0.000 claims description 8
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 8
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 claims description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 239000001508 potassium citrate Substances 0.000 claims description 6
- 229960002635 potassium citrate Drugs 0.000 claims description 6
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 6
- 235000011082 potassium citrates Nutrition 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 230000003449 preventive effect Effects 0.000 claims 2
- 239000003814 drug Substances 0.000 abstract description 12
- 230000005764 inhibitory process Effects 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000011010 flushing procedure Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 2
- KTCBLMXNWYGCRT-UHFFFAOYSA-N 1-[2-(1h-indol-3-yl)ethyl]-3-methylthiourea Chemical compound C1=CC=C2C(CCNC(=S)NC)=CNC2=C1 KTCBLMXNWYGCRT-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001529 polyepoxysuccinic acid Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a hardening-resistant medicament for a bottom filtration blast furnace slag treatment system, which is characterized by comprising the following raw materials in percentage by mass: 2-5% of carbonate, 15-25% of citrate, 3-5% of thiourea, 15-30% of polycarboxylic acid scale inhibitor and the balance of water, wherein the sum of the mass percentages of the components is 100%. The agent has the characteristics of corrosion inhibition, high temperature resistance, good stability and the like, and the whole production process has no discharge of three wastes.
Description
Technical Field
The invention belongs to the technical field of anti-hardening medicaments, and particularly relates to an anti-hardening medicament for a bottom filtration blast furnace slag treatment system, a preparation method and application thereof.
Background
A bottom filtering method blast furnace slag treatment system aims at performing water quenching on slag generated in a blast furnace ironmaking process to achieve a granulation effect. In the aspect of energy conservation and emission reduction, the emission of sulfur-containing steam in the slag granulation process is reduced by 15 percent, the water consumption is reduced by about 0.1 ton in ton iron making, and meanwhile, the slag flushing water filtered by the bottom filter tank can be directly subjected to heat exchange and heating to realize secondary utilization.
However, when the bottom-filtering blast furnace slag treatment system realizes energy conservation and emission reduction and waste heat heating recycling, on one hand, because calcium, magnesium, silicon and amorphous scale contained in slag species are granulated during quenching of slag flushing circulation, the scale with smaller particles can continuously aggregate and grow in cobble gaps of the bottom-filtering tank, and on the other hand, the slag species has hydraulicity, so that the water permeability of cobbles is continuously deteriorated, and on the other hand, the scale can be separated out due to continuous concentration of slag flushing circulation water, and finally, the bottom-filtering tank cannot perform a normal water filtering function.
At present, aiming at the hardening of a bottom-filtering-method blast furnace slag flushing system, because the hardness is high and compact, iron works generally adopt an air pick to crush and then manually replace filter materials, and the method is time-consuming and labor-consuming and has certain operation danger. In order to ensure the stable operation of a field slag flushing system, avoid blast furnace damping down caused by the fault of the slag flushing system and increase the operation cost of iron and steel enterprises, the development of an anti-hardening medicament suitable for a bottom filtration method blast furnace slag treatment system is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an anti-hardening agent for a bottom filtration blast furnace slag treatment system and a preparation method thereof, which solve the problem of hardening of cobbles in the bottom filtration blast furnace slag system, and have the advantages of low agent consumption, low cost, good effect, good economic benefit and wide social benefit.
In order to achieve the purpose, the invention adopts the following technical scheme:
the anti-hardening agent for the blast furnace slag treatment system by the bottom filtration method is characterized by comprising the following raw materials in percentage by mass: 2-5% of carbonate, 15-25% of citrate, 3-5% of thiourea, 15-30% of polycarboxylic acid scale inhibitor and the balance of water, wherein the sum of the mass percentages of the components is 100%.
Further, the carbonate is a water-soluble carbonate.
Further, the carbonate is sodium carbonate and/or potassium carbonate.
Further, the citrate is at least one of ammonium citrate, potassium citrate and sodium citrate.
Further, the polycarboxylate scale inhibitor is PESA.
Further, the anti-hardening agent is continuously added to ensure that the concentration range of the circulating water agent is 100-500ppm, and the concentration of the agent added at one time is 0.1-0.4% (wt).
A preparation method of a hardening-resistant medicament for a bottom filtration blast furnace slag treatment system is implemented according to the following steps:
s1, adding thiourea and carbonate into the balance of water, and heating to 60 ℃ until the thiourea and the carbonate are completely dissolved;
s2, adding at least one of ammonium citrate, potassium citrate and sodium citrate into the solution obtained in the step S1, and stirring at constant temperature for 20 min;
s3, adding PESA into the solution obtained in the step S2, and stirring at constant temperature for 30min to fully dissolve the PESA to obtain a finished product.
The application of the anti-hardening agent for the blast furnace slag treatment system by the bottom filtration method is to add the agent into circulating water to be in direct contact with high-temperature slag.
Compared with the prior art, the invention has the following beneficial effects:
the agent has the characteristics of corrosion inhibition performance, high temperature resistance, good stability and the like, and the whole production process has no three-waste discharge. The product of the invention is used for treating the slag flushing circulating water, has the advantages of small dosage, low cost, good effect, good economic benefit and wide social benefit.
Detailed Description
The exemplary embodiments will be described herein in detail, and the embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention.
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail with reference to the following examples.
The anti-hardening agent for the blast furnace slag treatment system by the bottom filtration method comprises the following raw materials in percentage by mass: 2-5% of carbonate, 15-25% of citrate, 3-5% of thiourea, 15-30% of polycarboxylic acid scale inhibitor and the balance of water; the water-soluble carbonate is added into the medicament, the alkalinity of circulating water is increased through design, calcium ions and magnesium ions in a circulating water system are converted into calcium carbonate and magnesium carbonate scales which are easy to treat, and the generated calcium carbonate and magnesium carbonate scales are subjected to chelation reaction with high-temperature-resistant citrate in the medicament to avoid large precipitation.
Wherein the carbonate is sodium carbonate and/or potassium carbonate, the citrate is at least one of ammonium citrate, potassium citrate and sodium citrate, and the polycarboxylate scale inhibitor is PESA; the PESA is a phosphorus-free, non-nitrogen, green and environment-friendly water-soluble polymer, has good scale inhibition and dispersion performance for calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, calcium fluoride and silica scale, and has a certain corrosion inhibition effect, and the PESA is polyepoxysuccinic acid (sodium).
The anti-hardening agent is continuously added to ensure that the concentration range of the circulating water agent is 100 plus 500ppm, and the concentration of the once-added agent is 0.1-0.4% (wt).
A preparation method of a hardening-resistant medicament for a bottom filtration blast furnace slag treatment system is implemented according to the following steps:
s1, adding thiourea and carbonate into the balance of water, and heating to 60 ℃ until the thiourea and the carbonate are completely dissolved; the components are in proportion by mass as follows: 2-5% of carbonate, 15-25% of citrate, 3-5% of thiourea, 15-30% of polycarboxylic acid scale inhibitor and the balance of water, wherein the sum of the mass percentages of the components is 100%.
S2, adding at least one of ammonium citrate, potassium citrate and sodium citrate into the solution obtained in the step S1, and stirring at constant temperature for 20 min;
s3, adding PESA into the solution obtained in the step S2, and stirring at constant temperature for 30min to fully dissolve the PESA to obtain a finished product.
The application of the anti-hardening agent for the blast furnace slag treatment system by the bottom filtration method is to add the agent into circulating water to be in direct contact with high-temperature slag.
The following is described with reference to specific process procedures:
example 1:
the invention provides an anti-hardening medicament for a bottom filtration blast furnace slag treatment system, which is prepared by respectively weighing the following components in percentage: 2% of sodium carbonate, 15% of ammonium citrate, 5% of thiourea, 20% of PESA, and the balance of water, wherein the sum of the mass percentages of the components is 100%; after the agent is continuously added into the blast furnace slag flushing system by the bottom filtration method, the concentration of the agent in the circulating water is kept in 500ppm of 200-.
Example 2:
the invention provides an anti-hardening medicament for a bottom filtration blast furnace slag treatment system, which is prepared by respectively weighing the following components in percentage: 5% of sodium carbonate, 25% of sodium citrate, 3% of thiourea, 15% of PESA, and the balance of water. After being added with large dose at one time according to the concentration of 0.1-0.4 percent and after 72 hours of circulating reaction, the circulating water flow of the on-site bottom filter tank is 1800m3H, lifting to 2400m3H is used as the reference value. Effectively improves the porosity of cobble in the bottom filter tank and ensures the flow rate required by slag flushing.
Example 3:
the invention provides an anti-hardening medicament for a bottom filtration blast furnace slag treatment system, which is prepared by respectively weighing the following components in percentage: 4% of sodium carbonate, 15% of ammonium citrate, 5% of sodium citrate, 4% of thiourea, 30% of PESA, and the balance of water, wherein after the bottom filter method blast furnace slag flushing system is continuously added, the concentration of the medicament in the circulating water is kept at 100-300ppm, and the replacement period of the surface layer filter material of the bottom filter tank is prolonged to more than 6 months from 45 days.
According to the traditional cognition, the use temperature of a water treatment agent is mostly concentrated between 50 ℃ and 90 ℃, and through a large amount of experimental research and development, the use temperature of the known agent in the formula of the agent can be obviously improved, specifically, because high-temperature slag is granulated and cooled by circulating water at about 1000 ℃ in the slag flushing process, the agent is added into the circulating water and is also in direct contact with the high-temperature slag, so that the temperature use range of the traditional agent is greatly expanded.
The traditional water treatment agent is only limited to be used under the working condition of a single phase (liquid phase), and when the three-phase coexisting interface conditions of solid phase (slag), liquid phase (circulating slag flushing water), gas phase (acid gas and water vapor in blast furnace slag) and the like exist in the slag flushing circulating slag flushing process, the using working condition conditions of the traditional agent are further enriched.
The agent has the characteristics of corrosion inhibition, high temperature resistance, good stability and the like, and the whole production process has no discharge of three wastes.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (8)
1. The anti-hardening agent for the blast furnace slag treatment system by the bottom filtration method is characterized by comprising the following raw materials in percentage by mass: 2-5% of carbonate, 15-25% of citrate, 3-5% of thiourea, 15-30% of polycarboxylic acid scale inhibitor and the balance of water, wherein the sum of the mass percentages of the components is 100%.
2. The hardening preventive agent for blast furnace slag processing system according to claim 1, wherein the carbonate is a water-soluble carbonate.
3. The hardening-resistant agent for blast furnace slag treatment system according to claim 2, wherein the carbonate is sodium carbonate and/or potassium carbonate.
4. The hardening preventive agent for blast furnace slag processing system according to claim 1, wherein the citrate is at least one of ammonium citrate, potassium citrate and sodium citrate.
5. The hardening-resistant agent for bottom-filtration blast furnace slag treatment system according to claim 1, wherein the polycarboxylate-type scale inhibitor is PESA.
6. The anti-caking agent for the bottom filtration blast furnace slag treatment system according to claim 1, wherein the anti-caking agent is continuously added to ensure that the concentration range of the circulating water agent is 100-500ppm, and the concentration of the once-added agent is 0.1-0.4 wt%.
7. The preparation method of the anti-hardening agent for the bottom-filtration blast furnace slag treatment system according to any one of claims 1 to 5, which is implemented by the following steps:
s1, adding thiourea and carbonate into the balance of water, and heating to 60 ℃ until the thiourea and the carbonate are completely dissolved;
s2, adding at least one of ammonium citrate, potassium citrate and sodium citrate into the solution obtained in the step S1, and stirring at constant temperature for 20 min;
s3, adding PESA into the solution obtained in the step S2, and stirring at constant temperature for 30min to fully dissolve the PESA to obtain a finished product.
8. The use of the anti-caking agent for a bottom-filtration blast furnace slag treatment system according to claim 1, wherein the agent is applied to a blast furnace slag treatment system, and is added to the circulating water to be in direct contact with the high-temperature slag.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110640819.4A CN113292170A (en) | 2021-06-09 | 2021-06-09 | Anti-hardening agent for blast furnace slag treatment system by bottom filtration method, preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110640819.4A CN113292170A (en) | 2021-06-09 | 2021-06-09 | Anti-hardening agent for blast furnace slag treatment system by bottom filtration method, preparation method and application thereof |
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| CN113292170A true CN113292170A (en) | 2021-08-24 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936177A (en) * | 2014-05-09 | 2014-07-23 | 天津沃川水处理工程技术有限公司 | Non-phosphorus corrosion and scale inhibitor for industrial cooling water system as well as preparation method and application thereof |
| WO2020011764A1 (en) * | 2018-07-09 | 2020-01-16 | Koninklijke Coöperatie Cosun U.A. | Antiscalant composition comprising a uronic acid polysaccharide |
| CN110818099A (en) * | 2019-12-09 | 2020-02-21 | 广东科威莱环保科技有限公司 | Water circulation dirt treating agent |
| CN111099752A (en) * | 2018-10-25 | 2020-05-05 | 中国科学院大连化学物理研究所 | Phosphorus-free slow-release scale inhibitor and synthesis method thereof |
-
2021
- 2021-06-09 CN CN202110640819.4A patent/CN113292170A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936177A (en) * | 2014-05-09 | 2014-07-23 | 天津沃川水处理工程技术有限公司 | Non-phosphorus corrosion and scale inhibitor for industrial cooling water system as well as preparation method and application thereof |
| WO2020011764A1 (en) * | 2018-07-09 | 2020-01-16 | Koninklijke Coöperatie Cosun U.A. | Antiscalant composition comprising a uronic acid polysaccharide |
| CN111099752A (en) * | 2018-10-25 | 2020-05-05 | 中国科学院大连化学物理研究所 | Phosphorus-free slow-release scale inhibitor and synthesis method thereof |
| CN110818099A (en) * | 2019-12-09 | 2020-02-21 | 广东科威莱环保科技有限公司 | Water circulation dirt treating agent |
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