WO2023277216A1 - 내화재용 액상 바인더 및 이를 포함하는 내화 벽돌 - Google Patents
내화재용 액상 바인더 및 이를 포함하는 내화 벽돌 Download PDFInfo
- Publication number
- WO2023277216A1 WO2023277216A1 PCT/KR2021/008260 KR2021008260W WO2023277216A1 WO 2023277216 A1 WO2023277216 A1 WO 2023277216A1 KR 2021008260 W KR2021008260 W KR 2021008260W WO 2023277216 A1 WO2023277216 A1 WO 2023277216A1
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- WO
- WIPO (PCT)
- Prior art keywords
- refractory
- binder
- liquid binder
- magnesia
- refractory material
- Prior art date
Links
- 239000011230 binding agent Substances 0.000 title claims abstract description 173
- 239000007788 liquid Substances 0.000 title claims abstract description 76
- 239000011449 brick Substances 0.000 title claims abstract description 42
- 150000007524 organic acids Chemical class 0.000 claims abstract description 57
- 150000007514 bases Chemical class 0.000 claims abstract description 46
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 8
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 8
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 8
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 8
- 125000000524 functional group Chemical group 0.000 claims abstract description 7
- 239000011819 refractory material Substances 0.000 claims description 148
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 86
- 239000000395 magnesium oxide Substances 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 21
- 235000013379 molasses Nutrition 0.000 claims description 20
- 229910002804 graphite Inorganic materials 0.000 claims description 19
- 239000010439 graphite Substances 0.000 claims description 19
- 239000003381 stabilizer Substances 0.000 claims description 19
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 239000003623 enhancer Substances 0.000 claims description 10
- 230000002708 enhancing effect Effects 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 9
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 8
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 8
- -1 organic acid salts Chemical class 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 235000002906 tartaric acid Nutrition 0.000 claims description 7
- 239000011975 tartaric acid Substances 0.000 claims description 7
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 239000010459 dolomite Substances 0.000 claims description 6
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- 239000004310 lactic acid Substances 0.000 claims description 6
- 235000014655 lactic acid Nutrition 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
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- 229920002125 Sokalan® Polymers 0.000 claims description 5
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- 239000008120 corn starch Substances 0.000 claims description 5
- 229920001592 potato starch Polymers 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 4
- 239000011451 fired brick Substances 0.000 claims description 4
- 150000004820 halides Chemical class 0.000 claims description 4
- 150000004677 hydrates Chemical class 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000004767 nitrides Chemical class 0.000 claims description 4
- 239000000376 reactant Substances 0.000 claims description 4
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- 229920001285 xanthan gum Polymers 0.000 claims description 4
- 229940082509 xanthan gum Drugs 0.000 claims description 4
- 235000010493 xanthan gum Nutrition 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 235000011007 phosphoric acid Nutrition 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 229910052596 spinel Inorganic materials 0.000 claims description 3
- 239000011029 spinel Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 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 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 235000010338 boric acid Nutrition 0.000 claims description 2
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 229940099112 cornstarch Drugs 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229960002900 methylcellulose Drugs 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229940116317 potato starch Drugs 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000011452 unfired brick Substances 0.000 claims description 2
- ZYVAQZSGKALVEU-UHFFFAOYSA-N 2-[2-[bis(2-hydroxy-2-oxoethyl)amino]ethyl-(2-hydroxy-2-oxoethyl)amino]ethanoic acid Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O.OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O ZYVAQZSGKALVEU-UHFFFAOYSA-N 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 33
- 238000006243 chemical reaction Methods 0.000 description 28
- 230000003628 erosive effect Effects 0.000 description 28
- 230000005484 gravity Effects 0.000 description 27
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- 230000000704 physical effect Effects 0.000 description 23
- 238000001556 precipitation Methods 0.000 description 23
- 238000000465 moulding Methods 0.000 description 20
- 229920001568 phenolic resin Polymers 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 19
- 238000001035 drying Methods 0.000 description 18
- 238000010304 firing Methods 0.000 description 18
- 238000002360 preparation method Methods 0.000 description 17
- 239000000047 product Substances 0.000 description 17
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 14
- 238000004898 kneading Methods 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000035484 reaction time Effects 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
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- 230000000694 effects Effects 0.000 description 7
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- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 7
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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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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- C04B35/62625—Wet mixtures
- C04B35/6263—Wet mixtures characterised by their solids loadings, i.e. the percentage of solids
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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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- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
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- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
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- C04B35/6365—Cellulose or derivatives thereof
Definitions
- the present invention relates to a liquid binder for a refractory material having excellent eco-friendliness and a refractory brick including the same, since a refractory material having excellent quality and low generation of harmful gases can be manufactured.
- refractory materials used in iron and/or steelmaking processes require high corrosion resistance and high heat resistance, and these refractory materials are mainly used in electric furnaces, converters, ladles, and mixed cars.
- Conventional refractories have been manufactured using phenolic resins as binders, but refractory materials manufactured using phenolic resins are thermally decomposed by heat generated during iron and steelmaking operations to generate various decomposition gases.
- This decomposition gas is known to adversely affect the human body because it contains a large amount of aromatic organic compounds.
- decomposed gas such as phenol, cresol, and xylenol, has a strong pungent smell and generates a serious odor and contaminates the working environment and the surrounding environment.
- a refractory material was preheated and used until the thermal decomposition of the phenolic resin was completed.
- This method has a limitation in that the odor reduction effect is not great and adversely affects the physical properties of the refractory material.
- the preheating method has not been a fundamental solution because harmful gases are generated even at the manufacturing site, not at the use site.
- Patent Document 1 discloses a carbon-containing refractory composition comprising a carbon-containing refractory aggregate and a binder, wherein the binder is composed of magnesium sulfate, lignosulfonate, and water. has been initiated.
- the refractory material containing magnesium sulfate, lignosulfonate, etc. has thermal decomposition when exposed to high temperatures, resulting in poor physical properties and poor erosion resistance.
- an object of the present invention is to provide a liquid binder for refractories capable of producing a refractory material having excellent physical properties such as thermal properties, strength, and erosion resistance with little generation of harmful gases when exposed to high temperatures, and refractory bricks including the same.
- the present invention relates to a basic compound containing at least one selected from the group consisting of alkali metals and alkaline earth metals;
- liquid binder for refractories containing a reactant of; an organic acid containing three or more functional groups.
- the present invention is a liquid binder for the fireproof material; And refractory material; to provide a refractory material, including.
- the present invention is a liquid binder for the fireproof material; And a refractory material; to provide a refractory brick comprising a.
- the liquid binder for fireproof materials according to the present invention is eco-friendly because there is no discharge of aromatic organic compounds generated as a result of thermal decomposition by heating, which is a problem of the conventional binder, phenolic resin.
- the phenolic resin requires an aging time of 3 to 24 hours after kneading
- the liquid binder for refractories according to the present invention is excellent in productivity because it can be molded immediately after kneading. It is possible to shorten the kneading time due to excellent kneading property.
- the liquid binder for refractory materials according to the present invention is a water-based binder and can significantly reduce energy costs by significantly shortening the drying time. .
- the refractory material and / or refractory brick containing the liquid binder for the refractory material has excellent physical properties such as hot properties, strength, and erosion resistance, so that it can be applied to industrial fields in which high-temperature melts such as iron and steel are used.
- the refractory materials and/or refractory bricks have excellent fire resistance performance and can be applied to various fields such as electric furnaces, ladles, converters, mixed-line cars, refining processes such as steelmaking, ironmaking, and the like.
- Example 1 is a component analysis result of decomposition gas released from the refractory material of Example 52.
- the liquid binder for fireproof materials of the present invention includes a reactant of a basic compound and an organic acid containing three or more functional groups.
- the liquid binder for refractories is in a liquid form and has excellent storage stability, excellent mixing with refractory materials, and excellent eco-friendliness because it does not emit harmful gases, which is a problem of phenolic resins.
- the basic compound reacts with the organic acid to impart viscosity to the binder.
- the basic compound includes at least one selected from the group consisting of alkali metals and alkaline earth metals.
- the alkali metal is at least one metal selected from the group consisting of sodium (Na) and potassium (K), and at least one selected from the group consisting of oxides, hydrates, halides, sulfides, nitrides, oxyacid salts, carbonates and organic acid salts thereof.
- the alkali metal is a group consisting of NaOH, NaCl, Na 2 O, Na 2 CO 3 , NaHCO 3 , 2Na 2 CO 3 ⁇ 3H 2 O 2 , K 2 O, KOH, KCl, K 2 S and KNH 2 It may include one or more selected from.
- the alkaline earth metal is one or more metals selected from the group consisting of magnesium (Mg) and calcium (Ca), and one selected from the group consisting of oxides, hydrates, halides, sulfides, nitrides, oxygenates, carbonates and organic acid salts thereof.
- the alkaline earth metal may include at least one selected from the group consisting of MgO, Mg(OH) 2 , MgCO 3 , MgO ⁇ CaO, MgCO 3 ⁇ CaCO 3 , CaO, CaCO 3 , and CaOH.
- the magnesium oxide (MgO) may be at least one selected from the group consisting of acustic calcined magnesia, fused magnesia, sintered magnesia, and dead burned magnesia.
- the basic compound may have an average diameter of 5.0 mm or less, 0.01 mm to 5.0 mm, 0.01 to 1.0 mm, 0.01 mm to 0.3 mm, or 0.01 mm to 0.045 mm.
- the average diameter of the basic compound is within the above range, it is possible to produce a reaction product of high purity with high specific surface area and high reaction activity with organic acid.
- the average diameter of the basic compound exceeds the above range, the reaction activity with the organic acid is insufficient, so that the reaction time is long in order to express sufficient viscosity in the binder, and unreacted components adversely affect the homogeneity of the binder. This can cause problems that adversely affect the physical properties of the manufactured product, such as hot strength.
- the organic acid acts to impart viscosity to the binder by reacting with the basic compound.
- the organic acid contains three or more functional groups.
- the functional group may be a carboxyl group (COOH).
- COOH carboxyl group
- the organic acid may include at least one selected from the group consisting of citric acid and ethylenediaminetetraacetic acid.
- the organic acid and the basic compound may be included in a weight ratio of 5 to 100: 1.0, 5 to 50: 1.0, or 5 to 25: 1.0.
- the weight ratio of the organic acid and the basic compound is less than the above range, that is, when a small amount of the organic acid is included based on the weight of the basic compound, the basic compound remaining after reacting with the organic acid further reacts with the reaction product, resulting in loss of viscosity of the binder or binding to the binder. Precipitation may occur or the strength of the manufactured refractory material may decrease.
- the weight ratio of the organic acid and the basic compound exceeds the above range, when the organic acid is included in excess based on the weight of the basic compound, the amount of cation (+) ion of the basic compound capable of reacting with the organic acid is insufficient, resulting in the viscosity of the binder is insufficient, and unreacted organic acid remains in the binder and reacts with the refractory material during product manufacturing, resulting in heat generation that shortens the pot life or causes the product to dry out, resulting in a decrease in strength.
- the liquid binder for fireproof materials may further contain water.
- the liquid binder may include a reactant obtained by adding a basic compound to an organic acid aqueous solution containing an organic acid and water and reacting the positive (+) ion of the basic compound with the organic acid.
- Water and organic acid may be included in a weight ratio of 1.0:0.2 to 0.8, 1.0:0.3 to 0.8, or 1.0:0.33 to 0.75.
- the content ratio of water to organic acid is less than the above range, that is, when a small amount of organic acid is included based on the weight of water, the strength of the manufactured refractory material may decrease due to the decrease in the concentration of the binder.
- the content ratio of water and organic acid exceeds the above range, that is, when an excessive amount of organic acid is included based on the weight of water, precipitation occurs in the binder, resulting in a decrease in the viscosity of the binder, and the strength of the manufactured refractory material may decrease. .
- the liquid binder may contain water, an organic acid and a basic compound in a weight ratio of 1: 0.3 to 1.0: 0.01 to 0.20, 1: 0.3 to 0.75: 0.02 to 0.17, or 1: 0.33 to 0.75: 0.025 to 0.15.
- the binder for fireproof materials may further include at least one selected from the group consisting of an antiseptic agent and a viscosity enhancing agent.
- the stabilizer serves to prevent the reduction of pot life due to the unreacted organic acid by reacting the unreacted organic acid with the excess basic compound, and to prevent precipitation of the binder due to the excess basic compound.
- the stabilizer may be an organic acid or an inorganic salt, and specifically, may include at least one selected from the group consisting of tartaric acid, lactic acid, phosphoric acid, oxalic acid, boric acid, and phosphoric acid.
- the stabilizer may be included in an amount of 0.1 to 15% by weight, or 1 to 8% by weight based on the total weight of the binder for the refractory material. If the content of the stabilizer is less than the above range, the pot life of the binder may be shortened or precipitation may occur, resulting in a decrease in strength and hot strength of the refractory material. And the strength and / or hot strength of the refractory material produced by the decrease in viscosity may be reduced.
- the viscosity enhancing agent increases the viscosity of the liquid binder for refractory materials to prevent deterioration in stability due to moisture evaporation and to improve kneading properties with refractory materials.
- the viscosity enhancing agent may include, for example, at least one selected from the group consisting of corn starch, potato starch, carbomer, xanthan gum, methylcellulose, metamethylcellulose, and molasses.
- the viscosity enhancing agent may be included in an amount of 0.1 to 10% by weight, or 0.5 to 5.0% by weight based on the total weight of the liquid binder for fireproof materials.
- the content of the viscosity enhancer is less than the above range, it is difficult to obtain the effect of adding the viscosity enhancer, and when it exceeds the above range, excessive viscosity enhancer causes aggregation of the binder, and when kneaded with a refractory material, the homogeneity of the kneading is lowered Deterioration of physical properties such as specific gravity and dry strength of manufactured products may occur.
- the liquid binder for fireproof materials according to the present invention as described above may further include coke powder.
- coke powder is additionally included as described above, the liquid binder may be used as a binder for surface treatment of a refractory material, in particular, a coating binder.
- the content of the coke powder may be used without particular limitation as long as it has viscosity and workability suitable for use for surface treatment, particularly for coating.
- the liquid binder for refractory materials according to the present invention has excellent kneading properties and shortens kneading time compared to phenolic resins, which are conventionally used binders, and thus has excellent economic efficiency.
- phenolic resin a maturation time of 3 to 24 hours is required after kneading
- the liquid binder for refractories according to the present invention can be molded immediately after kneading, so productivity can be improved, and the drying time is also shortened, resulting in energy saving effect. there is.
- a refractory material according to the present invention includes a liquid binder for a refractory material as described above; and refractory materials;
- the refractory material may be used without particular limitation as long as it is commonly used as a raw material for refractory materials, and includes, for example, at least one selected from the group consisting of magnesia-based, alumina-based, chromium-based, dolomite-based, and graphite-based refractory materials. can do.
- the refractory materials include magnesia-carbon, magnesia-alumina-carbon, alumina-silica, magnesia-chrome, magnesia-spinel, alumina-silicon carbide-carbon, alumina-carbon and magnesia refractory materials. It may include one or more selected from the group consisting of materials.
- the graphite-based refractory material may include natural graphite, impression graphite, or expanded graphite.
- the refractory material may include 1 to 10 parts by weight or 1 to 5 parts by weight of a liquid binder for refractories based on 100 parts by weight of the refractory material.
- the weight part of the refractory material and the liquid binder is less than the above range, when a small amount of the liquid binder is included relative to the weight of the refractory material, the erosion resistance of the refractory material is deteriorated due to a decrease in molding strength and hot strength, and the refractory material and the liquid phase
- the weight part of the binder exceeds the above range, when an excessive amount of liquid binder is included with respect to the weight of the refractory material, agglomeration during kneading or cracking during molding, and strength decrease and porosity increase due to volatilization of the binder at high temperature This may cause problems such as reduction in life span (decrease in erosion resistance).
- the fireproof material may further include at least one selected from the group consisting of a stabilizer and a viscosity enhancing agent.
- the stabilizer and the viscosity enhancing agent are as described in the liquid binder.
- the refractory material may further include a hot property improving agent.
- the hot property improver serves to improve the hot strength, erosion resistance, and oxidation resistance of the refractory material.
- the hot property improver may be used without particular limitation as long as it can be added to the refractory material to improve hot property, for example, pitch, silicon nitride (Si 3 N 4 ), boron carbide (B 4 C ) and at least one selected from the group consisting of carbon black.
- the hot property improver may be included in an amount of 0.1 to 3.0 parts by weight or 0.1 to 1.0 parts by weight based on 100 parts by weight of the refractory material. If the content of the hot property improving agent is less than the above range, the effect of improving the hot properties of the refractory material may not be properly expressed, and if the content exceeds the above range, the molding strength and dry properties of the refractory material may be reduced or the steel type may be affected.
- the refractory brick according to the present invention includes a binder for the refractory material; and refractory materials;
- the refractory material is as described in the refractory material.
- the refractory bricks include magnesia-carbon refractory bricks, magnesia-alumina-carbon refractory bricks, alumina-silica refractory bricks, magnesia-chromium refractory bricks, magnesia-spinel refractory bricks, and alumina-silicon carbide-carbon refractory bricks.
- Alumina-carbon-based refractory bricks, alumina-silicon carbide-magnesia-based refractory bricks, or magnesia-based refractory bricks may be used.
- the refractory bricks may be reduced-fired bricks, fired bricks, or unfired bricks.
- the refractory material and/or the fire brick according to the present invention does not contain organic resins such as phenolic resins, so that volatile organic compounds (VOCs) are not generated during the manufacturing process, and thus are environmentally friendly.
- the refractory material and / or refractory brick is excellent in physical properties required for refractory materials, such as compressive strength, porosity, erosion resistance, spalling resistance, etc. Do.
- the refractory materials and/or refractory bricks have excellent fire resistance performance and can be applied to various fields such as electric furnaces, ladles, converters, mixed-line cars, refining processes such as steelmaking, ironmaking, and the like.
- a liquid binder for fireproof materials was prepared using each component in the amount shown in Table 1.
- a basic compound was added to react the basic positive ion with the organic acid to prepare a liquid binder for fireproof materials.
- the reaction temperature, reaction time, and viscosity were measured, and the maximum value of the temperature value was measured for the reaction temperature and reaction time using a digital thermometer, and the reaction time was the time when the reaction temperature reached its peak. did In addition, the viscosity of the liquid binder was measured by classifying it into upper, middle, and lower by touch.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Example 8 basic compound Na 2 O 7.5 NaOH 7.5 NaHC0 3 7.5 2Na 2 CO 3 3H 2 O 2 7.5 NaCl 7.5 K2O 7.5 KCl 7.5 KOH 7.5 water 100 100 100 100 100 100 100 100 100 100 100 100 100 organic acid citric acid 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 When manufacturing binders Reaction temperature (°C) 110 120 34 35 30 103 33 126 Response time (hr) 15 2 210 180 315 19 221 One viscosity of liquid binders middle award award middle middle middle certificate
- the reaction rates of basic compounds and organic acids were in the order of KOH, NaOH, Na 2 O, K 2 O, 2Na 2 CO 3 3H 2 O 2 , NaHCO 3 , KCl and NaCl.
- the viscosity of the binder prepared using NaOH, NaHCO 3 and 2Na 2 CO 3 ⁇ 3H 2 O 2 was strong regardless of the reaction temperature and reaction rate, and K 2 O, KOH, KCl, Na 2 Binders prepared using O and NaCl exhibited relatively low viscosity.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 2.
- Example 9 Example 10
- Example 11 Example 12
- Example 13 basic compound NaOH 15 10 7.5 5 3 water 100 100 100 100 100 100 100 100 organic acid citric acid 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 When manufacturing binders Reaction temperature (°C) 144 129 120 90 72 Response time (hr) 2 2 2 2 2 Binder's Viscosity under under award award middle
- reaction temperature As shown in Table 2, the reaction temperature, reaction time, and viscosity were shown according to the addition amount of the basic compound NaOH.
- the reaction temperature increased as the addition amount of the basic compound increased from 3 to 15 parts by weight, but the viscosity was strong at 5 to 7.5 parts by weight.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 3.
- the reaction rates of basic compounds of alkaline earth metals and organic acids are CaO, calcined dolomite, CaOH, light burnt magnesia, CaCO 3 , MgCO 3 ⁇ CaCO 3 , Mg(OH) 2 , medium magnesia (DBM), Calcined magnesia, MgCO 3 , MgCl, and molten magnesia appeared in that order, and the viscosity of the binder was light-burned magnesia, medium-sized magnesia, calcined magnesia, Mg(OH) 2 , molten magnesia, MgCO 3 , regardless of the reaction rate and reaction temperature.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 4.
- Example 26 Example 27
- Example 28 Example 29
- Example 30 Example 31
- Example 32 Example 33 basic compound light burned magnesia 10 7 5 3 CaO 5 3 2
- One water 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 organic acid citric acid 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 When manufacturing binders Reaction temperature (°C) 69 61 56 48 69 51 45 33 Response time (hr) 182 179 168 188 32 37 32 31 Binder's Viscosity award award award under middle award middle
- Example 30 to 33 in which the amount of CaO added was changed from 1 to 5 parts by weight, the viscosity of the binder of Example 32, in which the amount of CaO added was 2 parts by weight, was the highest, and in Examples 30 and 33 containing 3 to 5 parts by weight of CaO, 31 showed a decrease in viscosity due to precipitation.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 5.
- Example 34 Example 35
- Example 36 Example 37
- Example 38 Example 39 water 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Citric acid (organic acid) 75 50 33 75 50 33 Light-burnt magnesia (alkaline earth metal oxide) 5 5 5 NaOH (alkali metal hydrate) 5 5 5 5 Reaction temperature (°C) during manufacture 64 56 43 121 108 85 Response time in manufacturing (hr) 183 181 188 2 2 2 2 Binder's Viscosity award award middle award middle
- a liquid binder for fireproof materials was prepared using each component in the amount shown in Table 6. At this time, SAMCHUN pure chemical's L(+)-Tartaric acid (solid content: 99.5% by weight) was used as tartaric acid, and SAMCHUN pure chemical's lactic acid (solid content: 88 ⁇ 3% by weight) was used as lactic acid. used
- a refractory material As a refractory material, 82 parts by weight of magnesia, 3 parts by weight of aluminum, and 15 parts by weight of impression graphite were mixed, 2 parts by weight of a liquid binder for refractory materials were added, kneaded at 25 to 35 ° C for 15 minutes, and then 60mmX60mmX60mm in 1 hour increments. It was molded to produce a refractory material. When the molding specific gravity of the manufactured refractory material became 3.0, it was made into pot life.
- Example 40 Example 41
- Example 42 Example 43
- Light burned magnesia (MgO) Alkaline Earth Metal Oxides
- 7.5 7.5 7.5 7.5 7.5 water 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Citric acid (organic acid) 50
- 50 50 50
- 50 stabilizer tartaric acid 5 lactic acid 5 phosphoric acid 5 boric acid 5 storage stability 1 week elapsed precipitation occurs no precipitation no precipitation no precipitation no precipitation 3 weeks elapsed precipitation occurs no precipitation no precipitation no precipitation 2 months passed precipitation occurs no precipitation no precipitation no precipitation no precipitation quality stability Potlife time (hr) 5 24 24 24 24 24 24 24 24 24 24 24 24
- the stabilizer reacted with the unreacted organic acid to increase the pot life. Furthermore, when the stabilizer is added in an amount of 9% by weight or more based on the total weight of the binder, precipitation in the binder may occur due to an excess of the stabilizer, so it may be preferable to use it within 3 to 9% by weight.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 7.
- the liquid binder for fireproof materials according to the present invention is a water-based binder, and quality stability may be deteriorated due to deterioration in properties due to moisture evaporation during storage and evaporation of moisture due to heat generation during kneading.
- a viscosity enhancing agent After preparing a binder by adding a viscosity enhancing agent, viscosity, single molding strength, and moisture evaporation were measured in the following manner.
- maltodextrin from Daesang Co., Ltd. was used as corn starch
- potato starch powder from Daemyung Co., Ltd. was used as potato starch
- carbomer of Jaseong CnT Co., Ltd. was used as carbomer
- DEOSEN BIOCHEMICAL was used as xanthan gum.
- Company Xantan Gum was used, and molasses from Daesang Co., Ltd. (total solid content: 80% or more by weight) was used as molasses.
- a refractory material composition was prepared by mixing 82 parts by weight of magnesia, 3 parts by weight of aluminum, and 15 parts by weight of graphite, and adding 2 parts by weight of a liquid binder for refractories as a refractory material. Thereafter, 300 g of the refractory composition was put into a 40 mmX70 mm (width X length) mold and pressed at a pressure of 5 t/cm 2 for 1 minute to prepare a specimen. Thereafter, after drying at 200 ° C. for 12 hours, the compressive strength was measured using a compressive strength meter (Kumkang Equipment Co., Ltd.), and it was set as single molding strength.
- Example 45 Example 46
- Example 47 Example 48
- Example 49 Example 50
- Example 51 Light burned magnesia (MgO) 7.5 7.5 7.5 7.5 7.5 7.5 water 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 citric acid 50 50 50 50 50 50 50 50 50 50 Tartaric acid (stabilizer) 5 5 5 5 5 5 5 5 5 5 5 viscosity enhancer corn starch One potato starch 5 carbomer 2 xanthan gum 2 methylcellulose 2 molasses 5 Properties Viscosity (cps) 200 370 350 360 370 350 300 Single forming strength (kg/cm 2 ) 100 115 110 105 107 130 132 Moisture Evaporation (% by weight) 5.2 2.0 2.4 2.2 2.1 2.5 3.6
- the viscosity at 25 ° C. of the binders of Examples 46 to 51 including the viscosity enhancer increased to 300 to 370 cps compared to the binder of Example 45 without the viscosity enhancer.
- the specimens prepared from the binders of Examples 47 to 52 had 5 to 32% improved molding strength.
- weight loss due to moisture evaporation was suppressed by 50% or more.
- phenol resin a conventional binder, has a high viscosity of 400 cps at 25 ° C., so clumping occurs during kneading.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 8.
- a liquid binder for fireproof materials was prepared by mixing water and an organic acid, reacting by adding a basic compound, and then adding a stabilizer and a viscosity enhancing agent.
- binder 1 binder 2 binder 3 binder 4 binder 5 binder 6 water 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
- refractory bricks which are refractory materials, were prepared by using each component in an amount as shown in Table 9.
- magnesia, aluminum and impression graphite are mixed as refractory materials
- a liquid binder for refractory materials is added, kneaded at 25 to 35 ° C for 15 minutes, molded into 60 mmX60 mm X 60 mm, dried at 200 ° C for 12 hours, and then dried at 1000 ° C for 12 hours.
- a refractory material was prepared by time firing.
- a product having a bulk specific gravity of 0.98 g/cm 3 , a specific surface area of 1 m 2 /g, and an average particle diameter of 350 ⁇ m was used as the impression graphite, and a product having an average particle diameter of 4 mm was used for magnesia.
- 8027 (product number) of Gangnam Hwaseong was used as a phenolic resin, and molasses from Daesang Co., Ltd. (total solid content of 80% or more) was used as molasses.
- the physical properties of the prepared refractory materials were measured in the following manner, and molding specific gravity, physical properties after drying, physical properties after firing, and erosion resistance were compared according to the type and amount of the basic compound added during the preparation of the binder.
- Equation 1 the bulk specific gravity was calculated after drying or firing using Equation 1 below.
- Equation 2 the apparent porosity after drying or firing was calculated using Equation 2 below.
- the compressive strength of a refractory material having a size of 60mmX60mmX60mm was measured using a hydraulic compressive strength tester according to the method described in KS L 3115.
- the refractory material was heated to 1,650 ⁇ 1,700 °C with a burner, and erosion resistance was measured using a mixture containing steel and steelmaking slag as an erosion agent in a weight ratio of 1: 1. .
- Erosion resistance was expressed as an erosion index relative to the standard specimen, and the erosion index of Example 53 was expressed as 100. At this time, the lower the erosion index, the better the erosion resistance.
- FIGS. 1 and 2 Thermal analysis and mass spectrometry (STA-MS) was used to measure the mass of the gas released when the weight was reduced during the pyrolysis analysis of the refractory material, and analyze the components of the released decomposition gas. The results are shown in FIGS. 1 and 2. showed up 1 is a component analysis result of the decomposed gas released from the refractory material of Example 52, and FIG. 2 is a component analysis result of the decomposed gas released from the refractory material of Comparative Example 1.
- Example 9 compared to Comparative Example 1 using a phenol resin, Example had equal or superior molding specific gravity, physical properties after drying, and physical properties after firing. In particular, in the case of Examples 52 and 55, molding specific gravity and erosion resistance were excellent compared to refractory materials using phenol resin and molasses as binders.
- the refractory material of Comparative Example 1 released benzene (C 6 H 6 ), toluene (C 7 H 8 ), and phenol (C 6 H 5 OH) (see FIG. 2), while The refractory material of Example 52 did not emit any harmful substances such as benzene (C 6 H 6 ), toluene (C 7 H 8 ), and phenol (C 6 H 5 OH) (see FIG. 1), and thus was excellent in eco-friendliness.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 8. Thereafter, refractory bricks, which are refractory materials, were manufactured by using each component in an amount as shown in Table 10.
- refractory materials such as magnesia, alumina, aluminum, and impression graphite are mixed, a liquid binder for refractory materials is added, kneaded at 25 to 35 ° C for 15 minutes, molded into a size of 60 mmX60 mmX60 mm, dried at 200 ° C for 12 hours, A refractory material was prepared by firing at 1000° C. for 12 hours. The physical properties of the prepared refractory material were measured in the same manner as in Example 52, and the erosion index of Example 63 was indicated as 100.
- a product having a bulk specific gravity of 0.98 g/cm 3 , a specific surface area of 1 m 2 /g, and an average particle diameter of 350 ⁇ m was used as the impression graphite, and a product having an average particle diameter of 4 mm was used as magnesia.
- 8027 (product number) of Kangnam Hwaseong was used as a phenolic resin, and molasses from Daesang Co., Ltd. (total solid content of 80% or more) was used as molasses.
- Examples 58 to 63 had equal or superior molding specific gravity, physical properties after drying, and physical properties after firing.
- the refractory material of Example 61 had a high molding specific gravity, a high bulk specific gravity after drying and firing, a low porosity, and a high compressive strength. This was excellent, and the erosion resistance was also excellent.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 8. Thereafter, refractory bricks, which are refractory materials, were manufactured by using each component in an amount as shown in Table 11.
- refractory materials such as magnesia, alumina, aluminum, and impression graphite are mixed, a binder for refractories is added, kneaded at 25 to 35 ° C for 15 minutes, molded into a size of 60 mmX60 mm X 60 mm, dried at 200 ° C for 12 hours, and 1000 It was fired for 12 hours at °C to prepare a refractory material.
- the physical properties of the prepared refractory material were measured in the same manner as in Example 52, and the erosion index of Example 65 was indicated as 100.
- a product having a bulk specific gravity of 0.98 g/cm 3 , a specific surface area of 1 m 2 /g, and an average particle diameter of 350 ⁇ m was used as the impression graphite, and a product having an average particle diameter of 4 mm was used as magnesia.
- 8027 (product number) of Kangnam Hwaseong was used as a phenolic resin, and molasses from Daesang Co., Ltd. (total solid content of 80% or more) was used as molasses.
- Examples 64 to 69 had equal or superior molding specific gravity, physical properties after drying, and physical properties after firing.
- the refractory material of Example 67 has a high molding specific gravity, a high bulk specific gravity after drying and firing, a low porosity, high compressive strength, and excellent physical properties, , corrosion resistance was also excellent.
- a liquid binder for a refractory material was prepared using each component in an amount as shown in Table 8. Thereafter, refractory bricks, which are refractory materials, were manufactured by using each component in an amount as shown in Table 12.
- refractory materials such as magnesia, aluminum, and impression graphite are mixed, and a hot property improver is added, and a binder for refractory materials is added, and then kneaded at 25 to 35 ° C. for 15 minutes, and then molded into a size of 60mmX60mmX60mm, 200
- a refractory material was prepared by drying at °C for 12 hours and firing at 1000 °C for 12 hours.
- the physical properties of the prepared refractory material were measured in the same manner as in Example 53, and the erosion index of Comparative Example 1 was indicated as 100.
- a product having a bulk specific gravity of 0.98 g/cm 3 , a specific surface area of 1 m 2 /g, and an average particle diameter of 350 ⁇ m was used as the impression graphite, and a product having an average particle diameter of 4 mm was used as magnesia.
- 8027 (product number) of Kangnam Hwaseong was used as a phenolic resin, and molasses from Daesang Co., Ltd. (total solid content of 80% or more) was used as molasses.
- Example 71 to 74 compared to Example 70 without a hot property improver, the refractories of Examples 71 to 74 in which a hot property improver such as pitch, carbon black, B 4 C, Si 3 N 4 and the like were added were molded. Specific gravity, physical properties after drying, and physical properties after firing were all equal or superior. In particular, Examples 71 to 74 were superior in erosion resistance and spalling resistance to Comparative Example 7.
- a hot property improver such as pitch, carbon black, B 4 C, Si 3 N 4 and the like
- Example 74 containing silicon nitride (Si 3 N 4 ), the erosion resistance was improved by 15% or more, and the residual linear expansion property was improved as compared with Comparative Example 1.
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Abstract
Description
성분 (중량부) |
실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | 실시예 7 | 실시예 8 | |
염기성 화합물 | Na2O | 7.5 | |||||||
NaOH | 7.5 | ||||||||
NaHCO3 | 7.5 | ||||||||
2Na2CO3·3H2O2 | 7.5 | ||||||||
NaCl | 7.5 | ||||||||
K2O | 7.5 | ||||||||
KCl | 7.5 | ||||||||
KOH | 7.5 | ||||||||
물 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
유기산 | 구연산 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
바인더 제조시 | 반응 온도(℃) | 110 | 120 | 34 | 35 | 30 | 103 | 33 | 126 |
반응 시간(hr) | 15 | 2 | 210 | 180 | 315 | 19 | 221 | 1 | |
액상 바인더의 점력 | 중 | 상 | 상 | 상 | 중 | 중 | 중 | 증 |
성분(중량부) | 실시예 9 | 실시예 10 | 실시예 11 | 실시예 12 | 실시예 13 | |
염기성 화합물 | NaOH | 15 | 10 | 7.5 | 5 | 3 |
물 | 100 | 100 | 100 | 100 | 100 | |
유기산 | 구연산 | 50 | 50 | 50 | 50 | 50 |
바인더 제조시 | 반응 온도(℃) | 144 | 129 | 120 | 90 | 72 |
반응 시간(hr) | 2 | 2 | 2 | 2 | 2 | |
바인더의 점력 | 하 | 하 | 상 | 상 | 중 |
성분(중량부) | 실시예 | ||||||||||||
14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | ||
염기성 화합물 | 경소 마그네시아 | 7.5 | |||||||||||
중소 마그네시아 | 7.5 | ||||||||||||
소성 마그네시아 | 7.5 | ||||||||||||
전융 마그네시아 | 7.5 | ||||||||||||
Mg(OH)2 | 7.5 | ||||||||||||
MgCO3 | 7.5 | ||||||||||||
MgCl | 7.5 | ||||||||||||
CaO | 7.5 | ||||||||||||
Ca(OH)2 | 7.5 | ||||||||||||
CaCO3 | 7.5 | ||||||||||||
소성 돌로마이트(MgO·CaO) | 7.5 | ||||||||||||
돌로마이트 원광(MgCO3·CaCO3) | 7.5 | ||||||||||||
물 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
유기산 | 구연산 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
바인더 제조시 | 반응 온도(℃) | 63 | 42 | 44 | 31 | 36 | 41 | 32 | 72 | 62 | 49 | 67 | 39 |
반응 시간(hr) | 180 | 360 | 362 | 720 | 320 | 372 | 415 | 36 | 52 | 182 | 51 | 256 | |
바인더의 점력 | 상 | 상 | 상 | 중 | 상 | 중 | 하 | 하 | 하 | 중 | 하 | 중 |
성분(중량부) | 실시예 26 | 실시예 27 | 실시예 28 | 실시예 29 | 실시예 30 | 실시예 31 | 실시예 32 | 실시예 33 | |
염기성 화합물 | 경소 마그네시아 | 10 | 7 | 5 | 3 | ||||
CaO | 5 | 3 | 2 | 1 | |||||
물 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
유기산 | 구연산 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
바인더 제조시 | 반응 온도(℃) | 69 | 61 | 56 | 48 | 69 | 51 | 45 | 33 |
반응 시간(hr) | 182 | 179 | 168 | 188 | 32 | 37 | 32 | 31 | |
바인더의 점력 | 상 | 상 | 상 | 상 | 하 | 중 | 상 | 중 |
성분(중량부) | 실시예 34 | 실시예 35 | 실시예 36 | 실시예 37 | 실시예 38 | 실시예 39 |
물 | 100 | 100 | 100 | 100 | 100 | 100 |
구연산 (유기산) | 75 | 50 | 33 | 75 | 50 | 33 |
경소 마그네시아 (알칼리 토금속 산화물) | 5 | 5 | 5 | |||
NaOH (알칼리 금속 수화물) | 5 | 5 | 5 | |||
제조시 반응 온도(℃) | 64 | 56 | 43 | 121 | 108 | 85 |
제조시 반응 시간(hr) | 183 | 181 | 188 | 2 | 2 | 2 |
바인더의 점력 | 상 | 상 | 중 | 상 | 상 | 중 |
성분(중량부) | 실시예 40 | 실시예 41 | 실시예 42 | 실시예 43 | 실시예 44 | |
경소 마그네시아(MgO) (알칼리 토금속 산화물) |
7.5 | 7.5 | 7.5 | 7.5 | 7.5 | |
물 | 100 | 100 | 100 | 100 | 100 | |
구연산 (유기산) | 50 | 50 | 50 | 50 | 50 | |
안정화제 | 타르타릭산 | 5 | ||||
젖산 | 5 | |||||
인산 | 5 | |||||
붕산 | 5 | |||||
저장 안정성 | 1주일 경과 | 침전 발생 | 침전 미발생 | 침전 미발생 | 침전 미발생 | 침전 미발생 |
3주일 경과 | 침전 발생 | 침전 미발생 | 침전 미발생 | 침전 미발생 | 침전 미발생 | |
2개월 경과 | 침전 발생 | 침전 미발생 | 침전 미발생 | 침전 미발생 | 침전 미발생 | |
품질 안정성 | 가사 시간(hr) | 5 | 24 | 24 | 24 | 24 |
성분(중량부) | 실시예 45 | 실시예 46 | 실시예 47 | 실시예 48 | 실시예 49 | 실시예 50 | 실시예 51 | |
경소 마그네시아(MgO) | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 | |
물 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | |
구연산 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | |
타르타릭산(안정화제) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | |
점력 증진제 | 옥수수 전분 | 1 | ||||||
감자 전분 | 5 | |||||||
카보머 | 2 | |||||||
잔탄검 | 2 | |||||||
메틸셀루로오스 | 2 | |||||||
당밀 | 5 | |||||||
물성 | 점도(cps) | 200 | 370 | 350 | 360 | 370 | 350 | 300 |
단미 성형 강도(kg/cm2) | 100 | 115 | 110 | 105 | 107 | 130 | 132 | |
수분 증발성(중량%) | 5.2 | 2.0 | 2.4 | 2.2 | 2.1 | 2.5 | 3.6 |
성분(중량부) | 바인더 1 | 바인더 2 | 바인더 3 | 바인더 4 | 바인더 5 | 바인더 6 | |
물 | 100 | 100 | 100 | 100 | 100 | 100 | |
유기산 | 50 | 50 | 50 | 75 | 75 | 75 | |
염기성 화합물 | MgO | 5 | 5 | ||||
NaOH | 5 | 5 | |||||
K2O | 3 | 3 | |||||
안정화제 | 타르타릭산 | 5 | 5 | 5 | 5 | 5 | 5 |
점력증진제 | 옥수수 전분 | 1 | 1 | 1 | 1 | 1 | 1 |
구분(중량부) | 비교예 | 실시예 | |||||||
1 | 2 | 52 | 53 | 54 | 55 | 56 | 57 | ||
내화 재료 | 마그네시아 | 82 | 82 | 82 | 82 | 82 | 82 | 82 | 82 |
알루미늄 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
인상 흑연 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | |
페놀 수지 | 3 | - | - | - | - | - | - | - | |
당밀 | - | 3 | - | - | - | - | - | - | |
바인더 1 | 2 | ||||||||
바인더 2 | 2 | ||||||||
바인더 3 | 2 | ||||||||
바인더 4 | 2 | ||||||||
바인더 5 | 2 | ||||||||
바인더 6 | 2 | ||||||||
내화재의 성형 비중 | 3.00 | 2.98 | 3.03 | 3.01 | 3.01 | 3.05 | 3.02 | 3.02 | |
건조 후 | 부피 비중(g/cm3) | 2.98 | 2.97 | 3.01 | 2.99 | 2.99 | 3.03 | 3.00 | 3.00 |
기공율(%) | 4.7 | 5.6 | 4.2 | 4.4 | 4.4 | 3.9 | 4.2 | 4.3 | |
압축 강도(kg/cm2) | 370 | 315 | 371 | 362 | 355 | 389 | 370 | 369 | |
소성 후 | 부피 비중(g/cm3) | 2.96 | 2.94 | 2.99 | 2.96 | 2.97 | 3.01 | 2.98 | 2.97 |
기공율(%) | 9.50 | 13.60 | 9.40 | 9.60 | 9.20 | 9.20 | 9.50 | 9.50 | |
압축 강도(kg/cm2) | 343 | 214 | 332 | 329 | 315 | 342 | 338 | 330 | |
내침식성 | 100 | 120 | 90 | 100 | 100 | 85 | 100 | 100 | |
잔존 선팽창성(%) | 0.43 | 0.56 | 0.42 | 0.43 | 0.42 | 0.39 | 0.43 | 0.43 |
구분(중량부) | 비교예 | 실시예 | ||||||||
3 | 4 | 58 | 59 | 60 | 61 | 62 | 63 | |||
내화 재료 | 마그네시아 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | |
알루미나 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | ||
알루미늄 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | ||
인상 흑연 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | ||
페놀 수지 | 3 | - | - | - | - | - | - | - | ||
당밀 | - | 3 | - | - | - | - | - | - | ||
바인더 1 | 2 | |||||||||
바인더 2 | 2 | |||||||||
바인더 3 | 2 | |||||||||
바인더 4 | 2 | |||||||||
바인더 5 | 2 | |||||||||
바인더 6 | 2 | |||||||||
내화재의 성형 비중 | 3.08 | 3.06 | 3.09 | 3.07 | 3.08 | 3.1 | 3.08 | 3.08 | ||
건조 후 | 부피 비중(g/cm3) | 3.06 | 3.03 | 3.07 | 3.05 | 3.06 | 3.07 | 3.06 | 3.05 | |
기공율(%) | 4.3 | 6.2 | 4.2 | 4.3 | 4.4 | 4.1 | 4.4 | 4.5 | ||
압축 강도(kg/cm2) | 383 | 285 | 389 | 381 | 379 | 392 | 381 | 380 | ||
소성 후 | 부피 비중(g/cm3) | 3 | 2.97 | 3.02 | 3 | 3.01 | 3.02 | 3 | 2.99 | |
기공율(%) | 9.7 | 13.2 | 9.2 | 9.6 | 9.4 | 9.1 | 9.8 | 9.7 | ||
압축 강도(kg/cm2) | 287 | 195 | 291 | 285 | 284 | 299 | 279 | 281 | ||
내침식성 | 100 | 120 | 97 | 99 | 100 | 85 | 98 | 100 | ||
잔존 선팽창성(%) | 0.95 | 0.99 | 0.95 | 0.94 | 0.96 | 0.94 | 0.95 | 0.96 |
구분(중량부) | 비교예 | 실시예 | ||||||||
5 | 6 | 64 | 65 | 66 | 67 | 68 | 69 | |||
내화 재료 | 마그네시아 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | |
알루미나 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | 67 | ||
알루미늄 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | ||
인상 흑연 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | ||
페놀 수지 | 3 | - | - | - | - | - | - | - | ||
당밀 | - | 3 | - | - | - | - | - | - | ||
바인더 1 | - | - | 2 | - | - | - | - | - | ||
바인더 2 | - | - | - | 2 | - | - | - | - | ||
바인더 3 | - | - | - | - | 2 | - | - | - | ||
바인더 4 | - | - | - | - | - | 2 | - | - | ||
바인더 5 | - | - | - | - | - | - | 2 | - | ||
바인더 6 | - | - | - | - | - | - | - | 2 | ||
내화재의 성형 비중 | 3.26 | 3.22 | 3.27 | 3.25 | 3.26 | 3.31 | 3.28 | 3.26 | ||
건조 후 | 부피 비중(g/cm3) | 3.24 | 3.2 | 3.25 | 3.24 | 3.24 | 3.28 | 3.25 | 3.24 | |
기공율(%) | 3.8 | 5.2 | 3.6 | 3.8 | 3.9 | 3.2 | 3.7 | 3.8 | ||
압축 강도(kg/cm2) | 594 | 425 | 597 | 590 | 589 | 615 | 590 | 593 | ||
소성 후 | 부피 비중(g/cm3) | 3.2 | 3.15 | 3.21 | 3.2 | 3.2 | 3.23 | 3.21 | 3.2 | |
기공율(%) | 9.1 | 12.5 | 9.1 | 9.2 | 9.3 | 8.7 | 9.1 | 9.1 | ||
압축 강도(kg/cm2) | 307 | 189 | 311 | 305 | 307 | 325 | 308 | 307 | ||
내침식성 | 100 | 135 | 95 | 100 | 98 | 87 | 99 | 101 | ||
잔존 선팽창성(%) | 0.89 | 0.99 | 0.89 | 0.89 | 0.9 | 0.84 | 0.89 | 0.9 |
구분(중량부) | 비교예 | 실시예 | ||||||
7 | 8 | 70 | 71 | 72 | 73 | 74 | ||
내화 재료 | 마그네시아 | 82 | 82 | 82 | 82 | 82 | 82 | 82 |
알루미늄 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
인상 흑연 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | |
바인더 1 | - | - | 2 | 2 | 2 | 2 | 2 | |
페놀 수지 | 3 | - | - | - | - | - | - | |
당밀 | - | 3 | - | - | - | - | - | |
열간 특성 개선제 | 피치(pitchi) | - | - | - | 0.4 | - | - | - |
카본 블랙 | - | - | - | - | 0.4 | - | - | |
B4C | - | - | - | - | - | 0.4 | - | |
Si3N4 | - | - | - | - | - | - | 0.4 | |
내화재의 성형 비중 | 3 | 2.98 | 3.03 | 3.02 | 3.02 | 3.03 | 3.04 | |
건조 후 | 부피 비중(g/cm3) | 2.98 | 2.97 | 3.01 | 3 | 2.99 | 3.01 | 3.02 |
기공율(%) | 4.7 | 5.6 | 4.2 | 4.2 | 4.3 | 4.3 | 4.2 | |
압축 강도(kg/cm2) | 370 | 315 | 371 | 370 | 373 | 371 | 370 | |
소성 후 | 부피 비중(g/cm3) | 2.96 | 2.94 | 2.99 | 2.98 | 2.97 | 2.98 | 2.98 |
기공율(%) | 9.5 | 13.6 | 9.4 | 8.9 | 9.2 | 8.9 | 9 | |
압축 강도(kg/cm2) | 343 | 214 | 332 | 348 | 350 | 349 | 348 | |
내침식성 | 100 | 120 | 90 | 91 | 89 | 91 | 85 | |
잔존 선팽창성(%) | 0.43 | 0.56 | 0.42 | 0.37 | 0.38 | 0.37 | 0.35 |
Claims (17)
- 알칼리 금속 및 알칼리 토금속으로 이루어진 군으로부터 선택된 1종 이상을 포함하는 염기성 화합물; 및3개 이상의 작용기를 함유하는 유기산;의 반응물을 포함하는, 내화재용 액상 바인더.
- 청구항 1에 있어서,상기 알칼리 금속은 나트륨(Na) 및 칼륨(K)으로 이루어진 군으로부터 선택된 1종 이상의 금속, 이의 산화물, 수화물, 할로겐화물, 황화물, 질화물, 산소산염, 탄산염 및 유기산염으로 이루어진 군으로부터 선택된 1종 이상을 포함하는, 내화재용 액상 바인더.
- 청구항 1에 있어서,상기 알칼리 토금속은 마그네슘(Mg) 및 칼슘(Ca)으로 이루어진 군으로부터 선택된 1종 이상의 금속, 이의 산화물, 수화물, 할로겐화물, 황화물, 질화물, 산소산염, 탄산염 및 유기산염으로 이루어진 군으로부터 선택된 1종 이상을 포함하는, 내화재용 액상 바인더.
- 청구항 1에 있어서,상기 유기산은 구연산 및 에틸렌디아민테트라아세트산(Ethylenediamine tetraacetic acid)로 이루어진 군으로부터 선택된 1종 이상을 포함하는, 내화재용 액상 바인더.
- 청구항 1에 있어서,물을 추가로 포함하고,물과 유기산을 1.0 : 0.2 내지 0.8의 중량비로 포함하는, 내화재용 액상 바인더.
- 청구항 1에 있어서,유기산과 염기성 화합물을 5 내지 100: 1.0의 중량비로 포함하는, 내화재용 액상 바인더.
- 청구항 1에 있어서,안정화제 및 점력증진제로 이루어진 군으로부터 선택된 1종 이상을 추가로 포함하는, 내화재용 액상 바인더.
- 청구항 7에 있어서,상기 안정화제는 타르타릭산, 젖산, 옥살산, 붕산 및 인산으로 이루어진 군으로부터 선택된 1종 이상을 포함하는, 내화재용 액상 바인더.
- 청구항 7항에 있어서,상기 점력증진제는 옥수수 전분, 감자 전분, 카보머, 잔탄검, 메틸셀룰로오스, 메타메틸셀룰로오스 및 당밀로 이루어진 군으로부터 선택된 1종 이상을 포함하는, 내화재용 액상 바인더.
- 청구항 7에 있어서,내화재용 액상 바인더 총 중량에 대하여 0.1 내지 15 중량%의 안정화제 및 0.1 내지 10 중량%의 점력증진제를 포함하는, 내화재용 액상 바인더.
- 청구항 1 내지 청구항 10 중 어느 한 항의 내화재용 액상 바인더; 및내화 재료;를 포함하는, 내화재.
- 청구항 11에 있어서,상기 내화 재료는 마그네시아계, 알루미나계, 크롬계, 돌로마이트계 및 흑연계 내화 재료로 이루어진 군으로부터 선택된 1종 이상을 포함하는, 내화재.
- 청구항 11에 있어서,열간 특성 개선제를 추가로 포함하는, 내화재.
- 청구항 13에 있어서,상기 열간 특성 개선제는 피치(Pitch), 질화 규소(Si3N4), 보론 카바이드(B4C) 및 카본 블랙으로 이루어진 군으로부터 선택된 1종 이상을 포함하는, 내화재.
- 청구항 1 내지 청구항 10 중 어느 한 항의 내화재용 액상 바인더; 및내화 재료;를 포함하는, 내화 벽돌.
- 청구항 15에 있어서,마그네시아-카본계 내화 벽돌, 마그네시아-알루미나-카본계 내화 벽돌, 알루미나-실리카계 내화 벽돌, 마그네시아-크롬계 내화 벽돌, 마그네시아-스피넬계 내화 벽돌, 알루미나-탄화규소-카본계 내화 벽돌, 알루미나-카본계 내화 벽돌, 알루미나-탄화규소-마그네시아계 내화 벽돌 또는 마그네시아계 내화 벽돌인, 내화 벽돌.
- 청구항 15에 있어서,환원 소성 벽돌, 소성 벽돌 또는 불소성 벽돌인, 내화 벽돌.
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PCT/KR2021/008260 WO2023277216A1 (ko) | 2021-06-30 | 2021-06-30 | 내화재용 액상 바인더 및 이를 포함하는 내화 벽돌 |
KR1020217020958A KR20230005724A (ko) | 2021-06-30 | 2021-06-30 | 내화재용 액상 바인더 및 이를 포함하는 내화 벽돌 |
EP21948516.6A EP4365151A1 (en) | 2021-06-30 | 2021-06-30 | Refractory liquid binder and refractory brick comprising same |
CN202180003051.8A CN117015519A (zh) | 2021-06-30 | 2021-06-30 | 耐火物用液体粘合剂及包含液体粘合剂的耐火砖 |
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US3923534A (en) * | 1972-05-22 | 1975-12-02 | Ici Ltd | Cold-setting refractory compositions |
US20050103235A1 (en) * | 2000-01-27 | 2005-05-19 | Harrison Aubry J.W. | Reactive magnesium oxide cements |
KR20060065660A (ko) * | 2003-07-31 | 2006-06-14 | 블루 멤브레인스 게엠베하 | 다공성 탄소계 성형체의 제조 방법, 및 세포 배양 캐리어시스템과 배양 시스템으로서의 이의 용도 |
KR100967408B1 (ko) | 2007-01-26 | 2010-07-01 | (주)원진월드와이드 | 카본-함유 친환경 내화재 조성물 |
KR101367790B1 (ko) * | 2013-11-27 | 2014-02-28 | 주식회사 은성콘크리트 | 친환경 저알칼리성 콘크리트 형성용 조성물 |
KR20180088658A (ko) * | 2015-12-01 | 2018-08-06 | 케르네오스 | 내화성 마그네시아 시멘트 |
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2021
- 2021-06-30 CN CN202180003051.8A patent/CN117015519A/zh active Pending
- 2021-06-30 EP EP21948516.6A patent/EP4365151A1/en active Pending
- 2021-06-30 WO PCT/KR2021/008260 patent/WO2023277216A1/ko active Application Filing
- 2021-06-30 KR KR1020217020958A patent/KR20230005724A/ko not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US3923534A (en) * | 1972-05-22 | 1975-12-02 | Ici Ltd | Cold-setting refractory compositions |
US20050103235A1 (en) * | 2000-01-27 | 2005-05-19 | Harrison Aubry J.W. | Reactive magnesium oxide cements |
KR20060065660A (ko) * | 2003-07-31 | 2006-06-14 | 블루 멤브레인스 게엠베하 | 다공성 탄소계 성형체의 제조 방법, 및 세포 배양 캐리어시스템과 배양 시스템으로서의 이의 용도 |
KR100967408B1 (ko) | 2007-01-26 | 2010-07-01 | (주)원진월드와이드 | 카본-함유 친환경 내화재 조성물 |
KR101367790B1 (ko) * | 2013-11-27 | 2014-02-28 | 주식회사 은성콘크리트 | 친환경 저알칼리성 콘크리트 형성용 조성물 |
KR20180088658A (ko) * | 2015-12-01 | 2018-08-06 | 케르네오스 | 내화성 마그네시아 시멘트 |
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