CN110835260A - High-wear-resistance chrome corundum ramming material and application thereof - Google Patents
High-wear-resistance chrome corundum ramming material and application thereof Download PDFInfo
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- CN110835260A CN110835260A CN201910049314.3A CN201910049314A CN110835260A CN 110835260 A CN110835260 A CN 110835260A CN 201910049314 A CN201910049314 A CN 201910049314A CN 110835260 A CN110835260 A CN 110835260A
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- 239000010431 corundum Substances 0.000 title claims abstract description 63
- 229910052593 corundum Inorganic materials 0.000 title claims abstract description 63
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 title claims description 13
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 21
- YQOPHINZLPWDTA-UHFFFAOYSA-H [Al+3].[Cr+3].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O Chemical compound [Al+3].[Cr+3].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O YQOPHINZLPWDTA-UHFFFAOYSA-H 0.000 claims abstract description 16
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 16
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 14
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002309 gasification Methods 0.000 claims abstract description 13
- 239000000701 coagulant Substances 0.000 claims abstract description 12
- 229910052582 BN Inorganic materials 0.000 claims abstract description 11
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012985 polymerization agent Substances 0.000 claims abstract description 11
- 239000000084 colloidal system Substances 0.000 claims abstract description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 3
- 239000011651 chromium Substances 0.000 claims description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 6
- 239000007767 bonding agent Substances 0.000 claims description 4
- 229910052845 zircon Inorganic materials 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 244000303860 Spiranthes sinensis Species 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 241001517403 Spiranthes Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
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- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
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Abstract
The invention discloses a high-wear-resistance chrome corundum ramming mass and application thereof, wherein the high-wear-resistance chrome corundum ramming mass comprises the following components in parts by weight: 56-65 parts of chrome corundum, 0-15 parts of zirconium corundum, 6-12 parts of binding agent, 1-4 parts of reinforcing agent, 3-6 parts of coagulant, 0.3-0.5 part of explosion-proof fiber, 3-5 parts of silicon nitride, 2-4 parts of boron nitride and 0.1-0.3 part of polymerization agent; the application is as follows: putting all the chrome corundum ramming powder into a stirrer, stirring for 1 minute, adding four fifths of binding agent, stirring for 3-4 minutes, adding a coagulant, stirring for 2-3 minutes, adding the rest binding agent until the stirring is uniform, ramming on a water-cooled wall of an air conveying conduit, naturally curing for 8-12 hours, and concentrating, dehydrating and curing the aluminum chromium phosphate colloid; in the gasification furnace baking process, the temperature of the water-cooled wall is raised to 230 ℃ and the furnace is baked for 56 hours. The invention has the advantages of excellent wear resistance, good chemical stability, small linear rate after burning, convenient construction and long service life.
Description
Technical Field
The invention relates to the technical field of chrome corundum ramming materials, in particular to a high-wear-resistance chrome corundum ramming material and application thereof.
Background
The gasification furnace is a core device for coal gas production in coal chemical industry, pulverized coal, oxygen and a small amount of steam enter a high-temperature and high-pressure gasification furnace reaction chamber under the pressurization condition, the gasification furnace is connected with the top of a synthetic gas cooler through a gas transmission guide pipe, and the lower half part inside the gas transmission guide pipe is of a water-cooled wall structure. A layer of refractory lining with the thickness of 14 mm-16 mm is rammed on the surface of the water wall, and 1900 pieces/m are arranged in the refractory lining2Left and right metal pins. The cooled circular synthetic gas in the conic outlet in the top of the gasifying furnace is chilled to 850-900 deg.c and this part of relatively light viscous slag is solidified into flyash to flush the lining of the gas pipeline directly. The abrasion of the heat-resistant steel pin and the wear-resistant refractory lining on the lower half part of the water-cooled wall refractory lining of the gas transmission pipe is serious, the RCAA-22S castable imported into France is used for the wear-resistant lining of the gas transmission pipe wall of the existing pulverized coal gasification furnace, and the service life is only about 5 months.
Disclosure of Invention
The invention aims to provide a high-wear-resistance chromium corundum ramming mass and application thereof, aiming at the defect of serious wear of the gas transmission conduit wall of a pulverized coal gasification furnace, and the ramming mass has the advantages of excellent wear resistance, good chemical stability, small linear variability after burning, convenient construction and long service life.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a high-wear-resistance chrome corundum ramming mass which comprises the following components in parts by weight: 56-65 parts of chrome corundum, 0-15 parts of zirconium corundum, 6-12 parts of binding agent, 1-4 parts of reinforcing agent, 3-6 parts of coagulant, 0.3-0.5 part of explosion-proof fiber, 3-5 parts of silicon nitride, 2-4 parts of boron nitride and 0.1-0.3 part of polymerization agent.
The high-wear-resistance chrome corundum ramming material is characterized in that Cr in the chrome corundum is2O3The content is 10-15%.
The high-wear-resistance chrome corundum ramming mass is characterized in that the binding agent is 52-58% of aluminum chromium phosphate aqueous solution.
The high-wear-resistance chrome corundum ramming material is characterized in that the reinforcing agent is nano-grade zirconite.
The high-wear-resistance chrome corundum ramming mass is characterized in that the explosion-proof fibers are water-soluble polyvinyl alcohol fibers with the diameter of 2-3 mu m.
The high-wear-resistance chrome corundum ramming mass is characterized in that the melding agent is carboxymethyl cellulose.
The second aspect of the invention provides an application of the high wear-resistant chromium corundum ramming mass in the aspect of the lining of the gas delivery conduit of the gasification furnace, which comprises the following specific steps: putting the chrome corundum, the zirconium corundum, the reinforcing agent, the explosion-proof fiber, the silicon nitride, the boron nitride and the polymerization agent into a strong stirrer, stirring for 1 minute, adding four fifths of the bonding agent, stirring for 3-4 minutes, adding the coagulant, stirring for 2-3 minutes, adding the remaining one fifth of the bonding agent, and stirring uniformly; ramming the uniformly stirred chrome corundum ramming material on a water-cooled wall of an air conveying conduit, naturally curing for 8-12 hours at the temperature of 5-35 ℃, and concentrating, dehydrating and curing the aluminum chromium phosphate colloid; in the gasification furnace baking process, the temperature of the water-cooled wall is raised to 230 ℃ and the furnace is baked for 56 hours.
Compared with the prior art, the invention has the following beneficial effects:
the high wear-resistant chromium corundum ramming material of the invention is prepared from Cr2O3Solid solution chromium corundum with the content of 10-15 percent is taken as a raw material, added with zirconia corundum and formed into ZrO at high temperature2Almost all the aluminum-chromium solid melt and corundum crystals in the glass phase are wrapped to form a continuous network structure, so that the mechanical property of the chromium corundum is greatly enhanced; the binding agent adopts chromium aluminum phosphate, and the high wear-resistant chromium corundum ramming mass can be solidified at normal temperature; the composite high-temperature colloid chromium aluminum phosphate is subjected to dehydration concentration and polymerization reaction at high temperature, and is chemically combined with chrome corundum and nano-grade zirconite and is combined with ceramics, so that the strength and the wear resistance of the chrome corundum ramming mass are obviously improved, the strength and the wear resistance of the lining are enhanced, and the service life of the lining is prolonged; the explosion-proof fiber in the corundum ramming mass adopts water-soluble polyvinyl alcohol fiber and a spiranthes agentBy adopting the carboxymethyl cellulose, the baking temperature can be greatly reduced, and the baking time can be reduced.
The high-wear-resistance chrome corundum ramming mass provided by the invention has the advantages of excellent wear resistance at high temperature, good chemical stability, small linear variability after burning, convenience in construction and long service life, and can be widely applied to the pipe wall of the gas transmission guide pipe of a coal chemical powder gasification furnace.
Detailed Description
The present invention will be further described with reference to the following examples, but the scope of the present invention is not limited to these examples. Other variations and modifications which may occur to those skilled in the art without departing from the spirit and scope of the invention are intended to be included within the scope of the invention.
Example 1;
in the following implementation, the weight portions of the raw materials are g or kg;
58 parts of chrome corundum, 12 parts of zirconium corundum, 5 parts of silicon nitride, 9 parts of aluminum chromium phosphate, 4 parts of reinforcing agent, 5 parts of coagulant, 0.3 part of explosion-proof fiber, 3.5 parts of silicon nitride, 3 parts of boron nitride and 0.2 part of spiranthes sinensis ramming mass.
Wherein the reinforcing agent is nano-grade zircon, the explosion-proof fiber is water-soluble polyvinyl alcohol fiber with the diameter of 2-3 mu m, and the silk ribbon polymerization agent is carboxymethyl cellulose.
Construction was carried out using a HOBART type intensive stirrer. Firstly, adding the chrome corundum, the zirconium corundum, the reinforcing agent, the explosion-proof fiber, the silicon nitride, the boron nitride and the polymerization agent into a stirrer, stirring for 1 minute, then adding four fifths of high-temperature colloid aluminum chromium phosphate, stirring for 3-4 minutes, then adding the coagulant, continuously stirring for 2-3 minutes, and then adding the remaining one fifth of high-temperature colloid aluminum chromium phosphate until the mixture is uniformly stirred; the uniformly stirred chrome corundum ramming mass is cut into blocks and then is filled into proper positions on the surface of a required lining. The thickness of each charging is not more than 20mm, the charging is rammed by a rubber hammer, the hammer head and the hammer head are overlapped 2/3, the reciprocating ramming is 2-4 times, the ramming is compact and has no gap, the ramming material is fully filled around the pipe fitting, the ramming is compact on the water-cooled wall of the gas transmission conduit, the water vapor temperature of the water-cooled wall is utilized to bake the furnace to 230 ℃, the heat is preserved for 8 hours, and the water-cooled wall lining of the gasification furnace meeting the operation requirement is generated.
Example 2;
in the following implementation, the weight portions of the raw materials are g or kg;
65 parts of chrome corundum in the high-wear-resistance chrome corundum ramming mass; 7.3 parts of zirconia alumina; 5 parts of silicon nitride and 11 parts of aluminum chromium phosphate; 3 parts of a reinforcing agent; 2 parts of coagulant and 0.4 part of explosion-proof fiber; 3.0 parts of silicon nitride, 3 parts of boron nitride and 0.3 part of a spiranthes sinensis walker.
Wherein the reinforcing agent is nano-grade zircon, the explosion-proof fiber is water-soluble polyvinyl alcohol fiber with the diameter of 2-3 mu m, and the silk ribbon polymerization agent is carboxymethyl cellulose.
Construction was carried out using a HOBART type intensive stirrer. Firstly, adding the chrome corundum, the zirconium corundum, the reinforcing agent, the explosion-proof fiber, the silicon nitride, the boron nitride and the polymerization agent into a stirrer, stirring for 1 minute, then adding four fifths of high-temperature colloid aluminum chromium phosphate, stirring for 3-4 minutes, then adding the coagulant, continuously stirring for 2-3 minutes, and then adding the remaining one fifth of high-temperature colloid aluminum chromium phosphate until the mixture is uniformly stirred; the uniformly stirred chrome corundum ramming mass is cut into blocks and then is filled into proper positions on the surface of a required lining. The thickness of each charging is not more than 20mm, the charging is rammed by a rubber hammer, the hammer head and the hammer head are overlapped 2/3, the reciprocating ramming is 2-4 times, the ramming is compact and has no gap, the ramming material is fully filled around the pipe fitting, the ramming is compact on the water-cooled wall of the gas transmission conduit, the water vapor temperature of the water-cooled wall is utilized to bake the furnace to 230 ℃, the heat is preserved for 8 hours, and the water-cooled wall lining of the gasification furnace meeting the operation requirement is generated.
Example 3;
in the following implementation, the weight portions of the raw materials are g or kg;
70 parts of chrome corundum in the high-wear-resistance chrome corundum ramming mass; 5 parts of zirconia corundum; 6 parts of silicon nitride and 10 parts of aluminum chromium phosphate; 3 parts of a reinforcing agent; 3 parts of coagulant and 0.4 part of explosion-proof fiber; 3.0 parts of silicon nitride, 3 parts of boron nitride and 0.3 part of a spiranthes sinensis walker.
Wherein the reinforcing agent is nano-grade zircon, the explosion-proof fiber is water-soluble polyvinyl alcohol fiber with the diameter of 2-3 mu m, and the silk ribbon polymerization agent is carboxymethyl cellulose.
Construction was carried out using a HOBART type intensive stirrer. Firstly, adding the chrome corundum, the zirconium corundum, the reinforcing agent, the explosion-proof fiber, the silicon nitride, the boron nitride and the polymerization agent into a stirrer, stirring for 1 minute, then adding four fifths of high-temperature colloid aluminum chromium phosphate, stirring for 3-4 minutes, then adding the coagulant, continuously stirring for 2-3 minutes, and then adding the remaining one fifth of high-temperature colloid aluminum chromium phosphate until the mixture is uniformly stirred; the uniformly stirred chrome corundum ramming mass is cut into blocks and then is filled into proper positions on the surface of a required lining. The thickness of each charging is not more than 20mm, the charging is rammed by a rubber hammer, the hammer head and the hammer head are overlapped 2/3, the reciprocating ramming is 2-4 times, the ramming is compact and has no gap, the ramming material is fully filled around the pipe fitting, the ramming is compact on the water-cooled wall of the gas transmission conduit, the water vapor temperature of the water-cooled wall is utilized to bake the furnace to 230 ℃, the heat is preserved for 8 hours, and the water-cooled wall lining of the gasification furnace meeting the operation requirement is generated.
Example 4
Comparative example 1 the properties of the high wear-resistant chrome corundum ramming mass prepared by the invention and the properties of the imported product are shown in table 1,
TABLE 1
As shown in Table 1, the high-wear-resistance chrome steel jade ramming mass has the advantages that the normal-temperature compressive strength, the breaking strength, the linear variability after burning, the thermal conductivity, the wear resistance and other properties are superior to those of similar imported products.
The foregoing detailed description is given by way of example only, to better enable one of ordinary skill in the art to understand the patent, and is not to be construed as limiting the scope of what is encompassed by the patent; any equivalent alterations or modifications made according to the spirit of the disclosure of this patent are intended to be included in the scope of this patent.
Claims (7)
1. The high-wear-resistance chrome corundum ramming material is characterized by comprising the following components in parts by weight: 56-65 parts of chrome corundum, 0-15 parts of zirconium corundum, 6-12 parts of binding agent, 1-4 parts of reinforcing agent, 3-6 parts of coagulant, 0.3-0.5 part of explosion-proof fiber, 3-5 parts of silicon nitride, 2-4 parts of boron nitride and 0.1-0.3 part of polymerization agent.
2. The high-wear-resistance chrome corundum ramming mass as claimed in claim 1, wherein Cr in the chrome corundum is2O3The content is 10-15%.
3. The high-wear-resistance chrome corundum ramming mass as claimed in claim 1, wherein the binding agent is 52-58% of aluminum chromium phosphate aqueous solution.
4. The high wear-resistant chrome corundum ramming mass as claimed in claim 1, wherein the reinforcing agent is nano-grade zircon.
5. The high-wear-resistance chrome corundum ramming mass as claimed in claim 1, wherein the explosion-proof fiber is water-soluble polyvinyl alcohol fiber with the diameter of 2-3 μm.
6. The high wear-resistant chrome corundum ramming mass as claimed in claim 1, wherein the mellowing agent is carboxymethyl cellulose.
7. The use of a high wear-resistant chromite-corundum ramming mass according to any one of claims 1 to 8 for lining gas-conveying ducts of gasifiers, in particular as follows: putting the chrome corundum, the zirconium corundum, the reinforcing agent, the explosion-proof fiber, the silicon nitride, the boron nitride and the polymerization agent into a strong stirrer, stirring for 1 minute, adding four fifths of the bonding agent, stirring for 3-4 minutes, adding the coagulant, stirring for 2-3 minutes, adding the remaining one fifth of the bonding agent, and stirring uniformly; ramming the uniformly stirred chrome corundum ramming material on a water-cooled wall of an air conveying conduit, naturally curing for 8-12 hours at the temperature of 5-35 ℃, and concentrating, dehydrating and curing the aluminum chromium phosphate colloid; in the gasification furnace baking process, the temperature of the water-cooled wall is raised to 230 ℃ and the furnace is baked for 56 hours.
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