WO2009130811A1 - 不定形耐火物用結合剤及び不定形耐火物 - Google Patents
不定形耐火物用結合剤及び不定形耐火物 Download PDFInfo
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- WO2009130811A1 WO2009130811A1 PCT/JP2008/069838 JP2008069838W WO2009130811A1 WO 2009130811 A1 WO2009130811 A1 WO 2009130811A1 JP 2008069838 W JP2008069838 W JP 2008069838W WO 2009130811 A1 WO2009130811 A1 WO 2009130811A1
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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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- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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Definitions
- the present invention relates to an irregular refractory binder and an irregular refractory used for lining and repairing kilns.
- Binders for lining refractories of various high-temperature processes include sodium phosphate, soda silicate, furan resin, phenol resin, pitch, aluminum lactate, sodium aluminate, Numerous inorganic and organic compounds are used, such as lycasol, alumina sol, polyvinyl alcohol, methyl cell mouthpiece, carboxymethyl cellulose, ethyl silicate, alumina cement, hydraulic alumina.
- alumina cement main constituent compounds: C a ⁇ ⁇ ⁇ 1 2 0 3 , C a ⁇ ⁇ 2 A 1 2 O 3 , 1 2 C a O ⁇ 7 A 1 2 O
- 3) is used in a wide range of applications as a binder for fireproof materials such as firewood, ladle, and tundish.
- alumina-based binder containing components other than C a O—Al 2 O 3 The first is also being considered.
- alumina-based binder containing components other than C a O—Al 2 O 3 The first is also being considered.
- refractory alumina cement 1 mainly composed of barium or strontium and alumina
- a raw material mixture for manufacturing is disclosed. Specifically, a mixture of carbonate and chloride is appropriately heat-treated to obtain a raw material mixture for cement production.
- Japanese Patent Application Laid-Open No. Sho 5 8-2 60 79 provides a heat-insulating castable composition using a strontium aluminine binder as a binder, and has a heat-insulating composition having strength at high temperatures.
- the corrosion resistance against high-temperature molten iron slag which is an essential characteristic for kiln kiln lining, is unknown because it is used for heat insulation that is lined on the back of the kiln.
- strontium aluminate when strontium aluminate is used as a binder, strontium ions are likely to elute during kneading, so that aggregation is likely to occur, and an adiabatic castable with strontium aluminate as a binder is provided. It became clear that kneading was not easy.
- the binders for refractories for indefinite shapes that are actually industrialized are mainly composed of C aO 'A l 2 0 3 , ⁇ - A l 2 0 3 and C a O-2 A 1 2 0. , 1 2 C a0. 7 A 1 2 0 3 , and various additives
- alumina cement cake containing bismuth is used.
- the alumina cements currently used in binders for irregular refractories include, for example, “High alumina cement ES”, “High alumina cement VS-2”, “High alumina cement” manufactured by Denki Kagaku Kogyo Co., Ltd.
- High Alumina Cement Super-GJ High Alumina Cement Super 2 All of them are mainly composed of C aO ⁇ A 1 2 O 3, ⁇ -A 1 2 O 3, C aO, 2 A 1 2 0 3 , 1 2 C a O ⁇ 7 A 1 2 O 3 , In addition, a small amount of additive is blended depending on the characteristics.
- An object of the present invention is to provide a binder for an amorphous refractory and an amorphous refractory which are superior in corrosion resistance to slag and molten iron than conventional alumina cement, and have excellent workability and stability at high temperatures. .
- the gist of the present invention is as follows.
- a binder for amorphous refractory characterized by containing a chemical composition of C ay S r, y A 1 4 O 7 (where 0 ⁇ y ⁇ l) (4) Cay S r — y Al 4 0 7 is contained in an amount of 10 mass% to 70 mass%, and A 1 2 O 3 is blended in an amount of 30 mass% to 90 mass%.
- a binder for an amorphous refractory (provided that 0 ⁇ ⁇ 1, 0 ⁇ z ⁇ 1
- An amorphous refractory comprising the binder according to any one of (1) to (7) and a refractory aggregate.
- the binder for amorphous refractories according to the present invention has excellent corrosion resistance against slag molten iron, and extends the life of amorphous refractories on kiln linings used at high temperatures. The effect can be demonstrated.
- Figure 1 shows an explanatory diagram showing the shape of the evaluation sample.
- Figure 2 shows an external view of the rotary erosion furnace.
- Figure 3 shows an explanatory diagram showing the cross section of the rotary erosion furnace.
- the present inventor pays attention to replacing Ca in the binder for the amorphous refractory with a metal element, and the conventional alumina cement C aO 'A It was newly found that by dissolving SrO in l 2 O 3, it has excellent corrosion resistance against slag and molten iron, and can improve workability and stability at high temperatures.
- Solid solution refers to a state in which two or more elements (which can be either metal or non-metal) are dissolved together to form a uniform solid phase as a whole.
- the crystal structure does not change with solid solution. This will be described in detail below.
- (1) of the present invention has a chemical composition of C a x S r, _ x A 1 obtained by dissolving Sr 0 in a conventional alumina cement C a 0 'Al 2 O 3.
- This solid solution has hydraulic properties, has a higher melting point than the conventional alumina cement C a 0 ⁇ A 1 2 O 3, and excels in stability at high temperatures when cured with water. I found a new thing.
- the range of X of C ax S ri —x A ls O may be any value as long as it is 0 and X ⁇ 1, that is, if S r ⁇ is in a solid solution state.
- the melting point is higher than that of conventional alumina cement, and it reacts with water to give a hardened body. When it becomes, it is excellent in the stability at high temperature, and can also be made excellent in corrosion resistance against molten iron and slag at high temperature.
- the binder of the present invention only needs to contain a component having a chemical composition of C a x S ri — x A 1 2 0 4 , and C a x S r!
- the content of x A 1 2 O 4 is not specified.
- the content of C a x S r — x A 1 2 0 4 is preferably 10% by mass or more in order to easily exert the effect. Further, the higher the content, the more preferable, so the upper limit may be 100% by mass.
- a 1 2 O 3 is typical as the composition of the balance, but other than that, S i 0 2 , T i O 2 , F e 2 ⁇ 3 , g ⁇ etc. are examples.
- (2) of the present invention is required to further increase the strength and fire resistance of the cured product when C a x S r ⁇ — X A 1 2 0 4 reacts with water to form a cured product.
- C a x S r ⁇ — X A 1 2 0 4 reacts with water to form a cured product.
- a 1 2 O 3 is preferably combined with A 1 2 O 3
- the content in each suitable binder is C a x S r! _ X
- a 1 2 O 4 1 0 wt% or more 6 0 wt% or less
- formulated A l 2 O 3 is 4 0 wt% to 9 0% by mass or less.
- the curing rate will be too fast depending on the composition and particle size distribution of the refractory aggregate of the irregular refractory, so that it will be difficult to secure sufficient usable time for construction. Because there is.
- a 1 2 O 3 to be blended is 40% by mass or more, the strength and fire resistance of the cured product can be sufficiently increased, which is preferable.
- it when more than 90% by mass is added, it contains C a S r, _ x A 1 2 0 4 Since the amount is relatively small, it may be difficult to cure uniformly, so 90% by mass or less is preferable.
- Refractory aggregates for amorphous refractories include: fused alumina, fused porcite, sintered alumina, calcined alumina, fused mullite, synthetic millet, fused silica, fused zirconia, fused zirconia lime , Zircon, magnesia cleansing force, electrofused magnesia, electrofused magcro, sintered spinel, electrofused spinel, silicon carbide, scaly graphite, earth graphite, sillimanite, kyanite, andalusite, wax Soil shale, dolomite crushing force, silica, etc. can be used. One kind of these or a combination of two or more kinds may be used.
- (3) of the present invention has a chemical composition C a y S r! Y A 1 obtained by dissolving SrO in C a O ⁇ A 1 2 O 3 which is a constituent compound of conventional alumina cement.
- 4 is a ⁇ 7 and monolithic refractories for binder which contains the components of the solid solution is denoted.
- This solid solution like the binder of (1), has hydraulic properties, has a higher melting point than the conventional alumina cement C aO * Al 2 O 3, and reacts with water to give a cured product. At that time, it was newly found that it has excellent stability at high temperatures.
- the range of (3 5 , 3 1 " 1 1 8 1 4 0 7 may be any value as long as 0 and y ⁇ 1, ie, SrO is in solid solution.
- the melting point is higher than that of conventional alumina cement, and when it becomes a hardened body by reacting with water, it has excellent stability at high temperatures. Corrosion resistance against molten iron and slag at high temperatures can also be improved.
- Binding agents of the present invention C ay S ri - y A l 4 as long component composed of ⁇ 7 chemical composition that is contained, the content of C ay S ri -y A l 0 7 particularly defined do not do.
- the content of C ay S ri -y A l 0 7 particularly defined do not do.
- make the effect easier C a y S r x _ y A 1 4 content of O 7 is arbitrarily favored more than 1 0% by weight to. Further, the higher the content, the more preferable, so the upper limit may be 100% by mass.
- (4) of the present invention is required to further increase the strength and fire resistance of the cured product when C ay Sr_y A 1 4 0 7 reacts with water to form a cured product.
- a binder in which A 1 2 O 3 is blended and the content in each suitable binder is C a y S r 1 injured y A 1 4 0 7 is 10 mass. % To 70% by mass, and the blended Al 2 O 3 is 30% to 90% by mass.
- the curing rate will be too fast depending on the composition and particle size distribution of the refractory aggregate of the irregular refractory, so that it will be difficult to secure sufficient usable time for construction. Because there is.
- a 1 2 O 3 to be blended is 30% by mass or more, the strength and fire resistance of the cured product can be sufficiently increased, which is preferable.
- the content of C a y S r x — y A 1 4 0 7 will be relatively small, so it may be difficult to cure uniformly. 90% by mass or less is preferable.
- (5) of the present invention is a binder in which the mixture of the binders (1) and (3) and A 1 2 O 3 are blended, and the content in each suitable binder is:
- the total amount of C a x S ri —x A ls O and C ay S r x .y A 1 4 O 7 is 10 mass% or more and 60 mass% or less, and is blended.
- a 1 2 0 3 is 40 mass% or more and 90 mass% or less.
- the mixing ratio of the binders (1) and (3) can be any ratio, and is not particularly specified.
- (6) of the present invention comprises the binder of the above (1) and a solid solution component expressed as 1 2 (C a 0) z (S r 0) 1 _ z ⁇ 7 A 1 2 O 3
- a binder containing a mixture and A 1 2 O 3 and the content in each suitable binder is C ax S i ⁇ — X A 1 2 0 4 and 1 2 (C a ⁇ ) z (S r O)! _ Z ⁇ 7 A 1 2
- the total amount of O 3 is 1 0 wt% or more 6 0 wt% or less, and the A 1 2 O 3 which is formulated at 4 0 mass or 9 0 mass or less.
- the mixing ratio of the binder of (1) and the binder of 1 2 (C aO) z (S rO). 2 ⁇ 7 A 1 2 O a can be any ratio, It is not specified.
- (7 of the present invention is a combination of the above-mentioned (1 and (3) and a solid solution component expressed as 1 2 (C a O) z (S r O) — z 7 A 1 2 0 3
- the total amount of A 1 2 O 3 is 10 mass% or more and 60 mass% or less, and the blended A 1 2 0 3 is 40 mass% or more and 90 mass% or less
- a 1 2 O 3 is arbitrary. It can be a ratio and is not specified.
- the blending ratio of the binder and the refractory aggregate is 100% by mass of the total of the binder and the refractory aggregate. In this case, it is recommended that the binder be 0.5% by mass or more and 10% by mass or less.
- the bond is insufficient and the strength after the binder is cured
- the degree may be insufficient.
- the volume of the binder during hydration and dehydration processes may affect the entire amorphous refractory, and cracks may occur.
- Refractory aggregates for amorphous refractories include: fused alumina, fused fusion site, sintered alumina, calcined alumina, fused mullite, synthetic millet, fused silica, fused zirconia, fused Zirconium mite, zircon, magnesia clinker, fusing magnesia, fusing magcro, sintered spinel, fusing spinel, silicon carbide, scaly graphite, earthy graphite, sillimanite, kyanite, andalusite, wax stone, Soil shale, dolomite clinker, silica, etc. can be used. One kind of these or a combination of two or more kinds may be used.
- the amount of water or water-containing solvent during construction is not particularly specified. However, although it depends on the particle size distribution of the aggregate and the type and amount of the dispersant, it is generally preferable that the outer shell is about 2 to 10% by mass with respect to the refractory aggregate.
- the binder of the present invention is used as a binder for an amorphous refractory, a dispersant or a curing regulator is added in order to appropriately control the speed of the hydration / curing reaction according to the temperature and humidity. It is preferable.
- Dispersants include carbonates such as soda carbonate and sodium bicarbonate, oxycarboxylic acids such as sodium citrate, tartaric acid and sodium tartrate, polyacrylic acid and methacrylic acid and salts thereof, tripolylin Condensed phosphates such as soda and hexametasodium soda and z or Alkali metals and alkaline earth metal salts can be mainly used.
- a curing retarder or a curing accelerator can be used as the curing modifier.
- curing retarders include boric acid, borax, soda dalconate, and key fluoride.
- lithium salts such as lithium carbonate, slaked lime, and aluminate can be used.
- an anti-explosion agent such as organic fibers such as vinylon, metal aluminum powder, and aluminum lactate can be used.
- ultrafine powder can be added to improve fluidity, fillability and sinterability.
- a water reducing agent such as a polycarboxylic acid water reducing agent, a polyether water reducing agent, a lignin water reducing agent, Chemical admixtures such as performance water reducing agents and high performance AE water reducing agents can be used.
- the type and amount of these chemical admixtures can be appropriately selected depending on the conditions such as the type and amount of the refractory aggregate to be added and the construction temperature.
- a 1 2 O a can be produced using limestone (mainly C a C0 3 ), Quicklime (mainly C aO), refined alumina ( ⁇ — ⁇ 1 2 0 3 , A 1 (OH) 3), bauxite (A l 2 0 3 raw material), strontian ore (S r CO 3) Aoishi (SrS0 4 ) is used as a raw material, and the raw materials are blended so that the molar ratio of the binder with the desired composition is obtained.
- limestone mainly C a C0 3
- Quicklime mainly C aO
- refined alumina ⁇ — ⁇ 1 2 0 3 , A 1 (OH) 3
- bauxite A l 2 0 3 raw material
- S r CO 3 strontian ore
- a reflection furnace In an electric furnace, a reflection furnace, a flat furnace, a vertical furnace, a shaft kiln or a rotary kiln, 1 1 0 0.
- a higher temperature for example, a temperature higher than 1700 ° C It is preferable to melt or calcine.
- these raw materials Prior to melting or firing, these raw materials are preferably pulverized by a pulverizer to a 50% average diameter of about 0.5 to 100 xm. If coarser particles are included, a large number of unreacted portions remain, and the original effect of the invention may not be exerted.
- C A_ ⁇ in the raw material, eight 1 2 0 3 and 3: 0 Total preferably has a 9 8 mass% or more purity.
- Bauxite is included in barite T i O 2, M g O being impurities such as F e 2 ⁇ 3 is thereby degrades the physical properties at high temperatures, it is preferable that as much as possible small quantities.
- the particle size of the hydraulic material affects the hydration reaction and the curing rate, it is preferable that the particle size is adjusted to about 1 to 20 m with a powder mill after melting or firing.
- This particle size is a result of measurement by a particle size analyzer such as a laser diffraction method, a laser single scattering method, or a sedimentation balance method, and represents a 50% average diameter.
- a blender such as an Iritsuhi mixer, Kuchichiyu Reed ram, cone blender, V-type blender, omni mixer, nauter mixer, pan-type mixer.
- an industrial grinder such as a vibration mill, a tube mill, a pole mill, and a roller one mill can be used.
- C a x S r! _ x A 1 2 O 4 containing 10 mass% or more and 60 mass% or less, and Al 2 O 3 blended with 40 mass% or more and 90 mass% or less is the method described above It is possible to manufacture by mixing a-alumina powder with the hydraulic material of C a x S r! -X A 1 2 0 4 obtained by the above.
- the a-alumina powder is high-purity alumina containing 90% by mass or more of Al 2 O 3, and alumina is generally produced by the Bayer method.
- the bauxite is first washed with a hot solution of sodium hydroxide (NaOH) at 250 ° C.
- NaOH sodium hydroxide
- alumina is converted to aluminum hydroxide (A 1 (0 H 3)) and dissolved by the reaction shown in the following chemical formula.
- the fluidity as a binder depends on the specific surface area of ⁇ —A 1 2 O 3 blended in the hydraulic material, it is preferable that the BET specific surface area is about 0.1 to 20 m 2 / g. is there.
- ⁇ -A 1 2 0 3 can be blended in a finely divided state or mixed and ground with a hydraulic material.
- the binders (4) to (7) can also be produced by blending ⁇ -alumina powder with each solid solution component.
- the purity 9 9 wt% (- 3 ⁇ 3 (and Ube Materials Co.'s), 3 purity 9 8 wt% 1: (0 3 (manufactured by Sakai Chemical Industry), purity 9 9 wt% of high purity (3 ⁇ 4-alumina (Nippon Light Metal) was used.
- Each raw material was weighed with a balance so as to have the chemical compositions shown in Tables 1 to 14 below, and mixed and ground in a mortar. After adding 1% by mass of water to 100% by mass of the mixed and pulverized raw material, the mixture is granulated and then heated at 140 ° C. for 48 hours in a silicon electric furnace. The mixture was allowed to cool to room temperature, allowed to cool in air, and then pulverized by a pole mill to obtain hydraulic materials of Examples 1 to 1 31.
- Example blended with A 1 2 O 3 is highly pure ⁇ - alumina obtained hydraulic material (manufactured by Nippon Light Metal) was blended so that a predetermined component.
- Mass% of this binder and mass% of refractory aggregate (the particle size of sieving is 1 m Sintered alumina 50% by mass, Fused alumina with a particle size of 75 m to 5 mm 4 3%, Magnesia 6% by mass, Silica flour 0.8% by mass, Vinylon fiber 0.20% by mass ) was mixed in an Omnimixer at a ratio of 8:92 for 1 minute to obtain a mixture. Furthermore, in a constant temperature room at 20 ° C, 6.8% by mass of water was added to 100% by mass of this mixture, and mixed and kneaded with a mortar mixer for 3 minutes to obtain an amorphous refractory sample. .
- an amorphous refractory sample was cured in a constant temperature room at 20 ° C. to prepare a refractory of 40 ⁇ 40 ⁇ XI 60 mm, which was used as a test piece for evaluating corrosion resistance against slag at high temperatures.
- a refractory was cut into the shape shown in Fig. 1 to prepare a test piece (refractory 1), and eight refractories 1 were lined and assembled as shown in Fig. 2.
- a cylindrical protective plate 2 (substantially 1 5 0 ⁇ ⁇ ) was incorporated inside the eight refractories 1 lined.
- the built-in refractory 1 was installed in a rotary furnace, and while the refractory 1 was rotating, the temperature was raised by combustion of the burner 3 from the inside of the rotary furnace.
- As the combustion gas LPG 1: oxygen 5 in volume ratio was used.
- 4 is a slag and 5 is a filler.
- the amount of wear of each test piece was measured by measuring the remaining size (non-oxidized layer thickness in the case of decarburized layer thickness) at intervals of 20 mm and calculating the difference from the initial thickness (48 mm). Asked.
- the test temperature was 1600 ° C, 25 minutes was 1 charge, and slag 4 was replaced by 50.0 g, and a total of 6 charges, 2 hours 30 minutes, was performed. Slag 4 was replaced by tilting the horizontal drum and discharging it.
- An amorphous refractory manufactured using a hydraulic material having the chemical composition real example 1, example 2, and examples 6 1 4, monolithic refractories further a l 2 ⁇ 3 was produced by using a binder which is a predetermined amount
- Comparative example 1 Using a non-Sr-containing binder component and Comparative Example 2 using an amorphous refractory prepared using a binder component that does not contain Ca, the curing time was measured, and slag was used.
- Rotational erosion test using Table 1 shows the chemical composition of each example and comparative example, the measurement results of the curing time, and the results of the rotary erosion test.
- Comparative Example 2 produced using a material not containing Ca, a homogeneous cured product could not be obtained because a part of the material was cured during the kneading. Therefore, corrosion resistance evaluation using slag could not be performed.
- the curing time was 10 to 28 hours, and it was normally within the range of an appropriate curing time until the amorphous refractory was cured and developed its strength and exhibited shape retention.
- Example 1 Example 2, and Examples 6 to 14, Al 2 O 3 is mixed, so that the same X is compared with Examples 3 to 5.
- compared by value it was found that the amount of wear in the rotary erosion test using slag could be further reduced, and that slag resistance at higher temperatures was better.
- Example 1 7 to Example 19 is an implementation of an amorphous refractory manufactured using a hydraulic material having a chemical composition of which all components of the binder are C a y S r! -Y
- Example 1 5, Example 1 6, and Example 2 0 to Example 2 8 are the same as in Comparative Example 3 except that an amorphous refractory produced using a binder containing a predetermined amount of A 1 2 O 3 was added.
- an amorphous refractory manufactured using a binder that does not contain Ca was used to measure the curing time and to perform a rotary erosion test using slag. Is.
- the curing time was 16 to 29 hours. Usually, it was able to be an appropriate curing time until the amorphous refractory was cured, developed its strength and exhibited shape retention.
- Example 1 5 Example 1 6 and Example 2 0 Example 2 8 is the fact that by blending A l 2 O 3, Example 1 7 Example 1 9 Compared with the same X value, it was found that the amount of wear in the rotary erosion test using slag could be further reduced, and the slag resistance at high temperatures was better.
- Comparative Example 6 using a binder not containing Ca, as in Comparative Example 2, a homogeneous cured body could not be obtained, and thus the corrosion resistance evaluation using slag could not be performed.
- the curing time was 13 to 27 hours. Usually, it was able to be an appropriate curing time until the amorphous refractory was cured, developed its strength and exhibited shape retention.
- Example 2 9 Oite in Example 3 0, and Example 3 4 Example 4 2, by which is blended A l 2 O 3, Example 3 1 - Example 3 3 Compared with the same x and y values, it was found that the amount of wear in the rotary erosion test using slag could be further reduced, and the slag resistance at high temperatures was better.
- Tables 4 and 5 show the chemical compositions, curing time measurement results, and rotational erosion test results of the examples and comparative examples.
- Example 43 Example 44 Actual 45 Actual implementation 46
- the curing time is 10 to 26 hours. It was possible to set an appropriate curing time until it hardened, developed strength, and exhibited shape retention.
- Example 4 3 Example 4 4, and Example 5 1 Example 6 8, by which is blended A l 2 O 3, and Example 4 5 Example 5 0
- Example 4 5 Example 5 0
- C a y S r! _ Y A 1 4 O 7 ( (C a ⁇ ) y (S R_ ⁇ )
- There y ⁇ 2 A 1 2 O 3 ) mixture monolithic refractories manufactured using a binder made of a chemical composition A similar test was conducted using.
- Tables 6 to 9 show the chemical composition, curing time measurement results, and rotational erosion test results for each example and comparative example.
- Example 6 9 to Example 10 06 The evaluation results are shown in Table 6 to Table 9, and in Example 6 9 to Example 10 06, in the rotary erosion test using slag, compared with Comparative Example 9 using the binder not containing Sr.
- the amount of wear was clearly small, and it became clear that the slag resistance was excellent at high temperatures.
- Comparative Example 10 using a binder not containing Ca as in Comparative Example 2, a homogeneous cured product could not be obtained, and therefore, corrosion resistance evaluation using slag could not be performed. .
- the curing time was 13 to 28 hours, and it was normally possible to set an appropriate curing time until the amorphous refractory was cured, developed its strength and exhibited shape retention.
- Example 7 in Example I. 5 to Example 8 6 and Example 9 7 Example 1 0 6, is the Rukoto have to blending A l 2 O 3, Embodiment Example 7 1 to Example 7 4 and Example 8 7 to Example 9 Compared to 6, the same x, y and z values can be used to further reduce the amount of wear in the rotary erosion test using slag, and it is clear that slag resistance at high temperatures is superior. It was.
- Table 10 shows the chemical compositions of the examples and comparative examples, the measurement results of the bending strength after 24 hours of curing, and the results of the rotary erosion test.
- the amounts of the binders of 0.5%, 5% and 10% by weight were 10% to 10%
- Examples 10 07 to 10 9 were able to obtain sufficient strength after 24 hours of curing
- Example 1 1 0 in which the amount of the binder was 0.2% by mass, the strength after curing for 24 hours was low.
- Example 1 1 1 in which the amount of the binder was 15% by mass a high value was obtained after 24 hours of curing, but it was clearly shown that the slag resistance at high temperatures was reduced. It was. [Table 1 0]
- Amount of binder when the total amount of binder and refractory aggregate is 100% by mass in an amorphous refractory manufactured using a binder containing a predetermined amount of A 1 2 O 3 in the composition Is 0.5 mass%, 5 mass% and 10 mass%.
- Example 1 15 is when the amount of the binder is 0.2% by mass
- Example 1 16 is when the amount of the binder is 15% by mass.
- Table 11 shows the chemical composition of each example and comparative example, the measurement results of bending strength after 24 hours of curing, and the results of rotational erosion tests.
- the amount of the binder is 0.5 mass%, 5 mass% and 10 mass%
- Examples 1 1 2 to 1 1 4 were able to obtain sufficient strength after curing for 24 hours.
- Example 1 15 where the amount of the binder was 0.2% by mass, the strength after 24 hours curing was low.
- Example 1 16 where the amount of the binder is 15% by mass, the strength after curing for 24 hours is high. It was clear that the slag resistance at high temperatures was reduced.
- Example 1 20 is the case where the amount of the binder is 0.2% by mass
- Example 1 2 1 is the case where the amount of the binder is 15% by mass.
- .2 was measured for flexural strength after 4 hours of curing, and a rotational erosion test using slag.
- the amount of the binder is 0.5 mass%, 5 mass% and 10 mass%
- Examples 1 1 7 to 1 1 9 were able to obtain sufficient strength after curing for 24 hours.
- Example 1 2 0 in which the amount of the binder was 0.2% by mass
- the strength after curing for 24 hours was low.
- Example 1 2 1 in which the amount of the binder was 15% by mass, a high value was obtained after 24 hours of curing, but it became clear that the slag resistance at high temperature was lowered. It was.
- Example 1 2 2 to Example 1 2 4 consist of a chemical composition of C ax S ri — x A ls O, 1 2 (C a O) z (S r O)! In.
- Monolithic refractory of ⁇ ⁇ 7 A 1 2 O in a mixture of those comprising the chemical composition of 3 more A 1 2 O 3 was produced by using a binder which is a predetermined amount, binding agents and refractory aggregate In this case, the amount of the binder is 0.5 mass%, 5 mass%, and 10 mass% when the total amount is 100 mass%.
- Example 1 2 5 has a binder amount of 0.2% by weight
- Example 1 2 6 has a binder amount of 1 This is the case where the content is 5% by mass.
- Example 13 shows the chemical composition of each example and comparative example, the measurement results of the bending strength after curing for 24 hours, and the results of the rotational erosion test.
- Examples 1 2 2 to 1 2 4 in which the amount of the binder was 0.5% by mass, 5% by mass, and 10% by mass were able to obtain sufficient strength after curing for 24 hours, In Example 1 2 5 where the amount of the binder was 0.2% by mass, the strength after 24 hours of curing was low. Further, in Example 1 26 where the amount of the binder was 15% by mass, a high strength was obtained after 24 hours of curing, but the slag resistance at high temperatures was clearly reduced. It was.
- Examples 1 2 7 to 1 2 9 are composed of a chemical composition of C ax S i ⁇ — X A 1 2 0 4 , 1 2 (C a 0) z (S r O)! of chemical composition of ⁇ ⁇ 7 A 1 2 0 3 and of C ay S ri —y A l O?
- the amount of the binder is 0.5 mass%, 5 mass%, and 10 mass%.
- Example 1 3 0 is the case where the amount of the binder is 0.2% by mass
- Example 1 3 1 is the case where the amount of the binder is 15% by mass.
- Table 14 shows the chemical composition of each example and comparative example, the measurement results of the bending strength after 24 hours of curing, and the results of the rotary erosion test.
- the amount of the binder is 0.5% by mass, 5% by mass and 10% by mass
- Examples 1 2 7 to 1 2 9 were able to obtain sufficient strength after 24 hours of curing
- Example 1 3 0 in which the amount of the binder was 0.2% by mass
- the strength after curing for 24 hours was low.
- Example 1 3 1 in which the amount of the binder was 15% by mass, a high value was obtained after curing for 24 hours, but it was clear that the slag resistance at high temperature was lowered. It was.
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Abstract
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0822533-8A BRPI0822533B1 (pt) | 2008-04-25 | 2008-10-27 | Aglutinante para refratários monolíticos |
| CN2008801288146A CN102015578B (zh) | 2007-04-27 | 2008-10-27 | 不定形耐火材料用粘合剂及不定形耐火材料 |
| US12/736,607 US8309483B2 (en) | 2007-04-27 | 2008-10-27 | Binder for monolithic refractories and monolithic refractory |
| EP08874061.8A EP2272811B1 (en) | 2008-04-25 | 2008-10-27 | Binder for monolithic refractory and monolithic refractory |
| BR122018013582-4A BR122018013582B1 (pt) | 2007-04-27 | 2008-10-27 | Refratário monolítico de aglutinante |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008115533A JP5384025B2 (ja) | 2007-04-27 | 2008-04-25 | 不定形耐火物用結合剤及び不定形耐火物 |
| JP2008-115533 | 2008-04-25 |
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| Publication Number | Publication Date |
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| WO2009130811A1 true WO2009130811A1 (ja) | 2009-10-29 |
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| PCT/JP2008/069838 Ceased WO2009130811A1 (ja) | 2007-04-27 | 2008-10-27 | 不定形耐火物用結合剤及び不定形耐火物 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2272811B1 (ja) |
| KR (1) | KR101175878B1 (ja) |
| BR (1) | BRPI0822533B1 (ja) |
| WO (1) | WO2009130811A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011136365A1 (ja) * | 2010-04-28 | 2011-11-03 | 新日本製鐵株式会社 | 不定形耐火物用結合剤、不定形耐火物、及び不定形耐火物の施工方法 |
| WO2017057566A1 (ja) * | 2015-09-29 | 2017-04-06 | 新日鐵住金株式会社 | 不定形耐火物 |
| CN108025985A (zh) * | 2015-09-29 | 2018-05-11 | 新日铁住金株式会社 | 不定形耐火物 |
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| JPS52148524A (en) | 1976-05-03 | 1977-12-09 | Tashk Ni I Puroekutonui I Suto | Mixture of raw materials for manufacture of fireproof alumina cement |
| JPS5325631A (en) * | 1976-08-20 | 1978-03-09 | Tashk Ni I Puroekutonui I Suto | Mixture of raw materials for manufacture of fireproof high alumina cement |
| JPS56104783A (en) * | 1980-01-24 | 1981-08-20 | Asahi Glass Co Ltd | Castable blend |
| JPS5826079A (ja) | 1981-08-11 | 1983-02-16 | 旭硝子株式会社 | 耐熱性キヤスタブル調合物 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7507289B2 (en) * | 2003-06-26 | 2009-03-24 | Japan Science And Technology Agency | Electroconductive 12CaO—7Al2O3 and compound of same type, and method for preparation thereof |
-
2008
- 2008-10-27 EP EP08874061.8A patent/EP2272811B1/en active Active
- 2008-10-27 WO PCT/JP2008/069838 patent/WO2009130811A1/ja not_active Ceased
- 2008-10-27 BR BRPI0822533-8A patent/BRPI0822533B1/pt active IP Right Grant
- 2008-10-27 KR KR1020107026293A patent/KR101175878B1/ko active Active
Patent Citations (4)
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|---|---|---|---|---|
| JPS52148524A (en) | 1976-05-03 | 1977-12-09 | Tashk Ni I Puroekutonui I Suto | Mixture of raw materials for manufacture of fireproof alumina cement |
| JPS5325631A (en) * | 1976-08-20 | 1978-03-09 | Tashk Ni I Puroekutonui I Suto | Mixture of raw materials for manufacture of fireproof high alumina cement |
| JPS56104783A (en) * | 1980-01-24 | 1981-08-20 | Asahi Glass Co Ltd | Castable blend |
| JPS5826079A (ja) | 1981-08-11 | 1983-02-16 | 旭硝子株式会社 | 耐熱性キヤスタブル調合物 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011136365A1 (ja) * | 2010-04-28 | 2011-11-03 | 新日本製鐵株式会社 | 不定形耐火物用結合剤、不定形耐火物、及び不定形耐火物の施工方法 |
| CN102958867A (zh) * | 2010-04-28 | 2013-03-06 | 新日铁住金株式会社 | 不定形耐火物用粘结剂、不定形耐火物以及不定形耐火物的施工方法 |
| US8835338B2 (en) | 2010-04-28 | 2014-09-16 | Nippon Steel & Sumitomo Metal Corporation | Binder for monolithic refractories, monolithic refractory, and construction method of monolithic refractories |
| KR101444575B1 (ko) | 2010-04-28 | 2014-09-24 | 신닛테츠스미킨 카부시키카이샤 | 부정형 내화물용 결합제, 부정형 내화물 및 부정형 내화물의 시공 방법 |
| JP5683576B2 (ja) * | 2010-04-28 | 2015-03-11 | 新日鐵住金株式会社 | 不定形耐火物用結合剤、不定形耐火物、及び不定形耐火物の施工方法 |
| WO2017057566A1 (ja) * | 2015-09-29 | 2017-04-06 | 新日鐵住金株式会社 | 不定形耐火物 |
| CN108025985A (zh) * | 2015-09-29 | 2018-05-11 | 新日铁住金株式会社 | 不定形耐火物 |
| US10414695B2 (en) | 2015-09-29 | 2019-09-17 | Nippon Steel Corporation | Monolithic refractory |
| CN108025985B (zh) * | 2015-09-29 | 2020-09-15 | 日本制铁株式会社 | 不定形耐火物 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110004886A (ko) | 2011-01-14 |
| BRPI0822533A8 (pt) | 2018-07-10 |
| EP2272811B1 (en) | 2017-04-26 |
| EP2272811A1 (en) | 2011-01-12 |
| BRPI0822533B1 (pt) | 2019-04-09 |
| KR101175878B1 (ko) | 2012-08-21 |
| BRPI0822533A2 (pt) | 2015-06-23 |
| EP2272811A4 (en) | 2012-01-18 |
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