CN115872730B - Slag-sticking-preventing thermal-state gunning material for ladle, and preparation method and use method thereof - Google Patents
Slag-sticking-preventing thermal-state gunning material for ladle, and preparation method and use method thereof Download PDFInfo
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- CN115872730B CN115872730B CN202211497794.8A CN202211497794A CN115872730B CN 115872730 B CN115872730 B CN 115872730B CN 202211497794 A CN202211497794 A CN 202211497794A CN 115872730 B CN115872730 B CN 115872730B
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- 239000000463 material Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 180
- 239000000843 powder Substances 0.000 claims abstract description 126
- 239000002245 particle Substances 0.000 claims abstract description 67
- 239000000835 fiber Substances 0.000 claims abstract description 58
- 238000005507 spraying Methods 0.000 claims abstract description 45
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000002265 prevention Effects 0.000 claims abstract description 36
- 239000007767 bonding agent Substances 0.000 claims abstract description 29
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 26
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 21
- -1 calcium titanate aluminate Chemical class 0.000 claims abstract description 19
- 239000010426 asphalt Substances 0.000 claims abstract description 18
- 239000006004 Quartz sand Substances 0.000 claims abstract description 17
- 239000004113 Sepiolite Substances 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052849 andalusite Inorganic materials 0.000 claims abstract description 17
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 17
- 239000000440 bentonite Substances 0.000 claims abstract description 17
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 17
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 17
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 17
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 17
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 17
- 239000006229 carbon black Substances 0.000 claims abstract description 17
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 17
- 239000010431 corundum Substances 0.000 claims abstract description 17
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 17
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 17
- 239000011734 sodium Substances 0.000 claims abstract description 17
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group 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 abstract description 13
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 7
- 239000002893 slag Substances 0.000 claims description 36
- 230000008439 repair process Effects 0.000 claims description 34
- 239000007921 spray Substances 0.000 claims description 27
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 22
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000011068 loading method Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 24
- 239000003973 paint Substances 0.000 description 10
- 230000003628 erosive effect Effects 0.000 description 8
- 239000011819 refractory material Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000009991 scouring Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Ceramic Products (AREA)
Abstract
The invention discloses a slag-sticking prevention thermal state gunning material for a ladle, a preparation method and a use method thereof, wherein the slag-sticking prevention thermal state gunning material for the ladle consists of dry powder raw materials and a bonding agent, and the dry powder raw materials comprise the following raw materials in parts by weight: (1) particulate raw material: 16-18 parts of quartz sand, 3-5 parts of andalusite, 16-20 parts of bauxite, 5-8 parts of silicon carbide particles, 1-3 parts of spherical asphalt and 14-20 parts of calcium titanate aluminate; (2) fine powder raw material: 3-6 parts of carbon black, 3-6 parts of bentonite, 12.8-18 parts of corundum powder, 10-14 parts of silicon carbide fine powder and alpha-Al 2 O 3 6-10 parts of micro powder and 0.2-1 part of slaked lime; (3) fiber raw material: sepiolite 0.5-1 weight portions and organic explosion-proof fiber 0.05-0.1 weight portions; the bonding agent is sodium silica sol, the dosage is 9-12% of the total weight of the dry powder raw material, and the slag-sticking prevention thermal state gunning material can be used for spraying construction under the condition of high temperature of a ladle, so that the operating environment of workers is improved, the turnover efficiency of the ladle is improved, the energy is saved, and the service life of the ladle is prolonged.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to a slag-sticking prevention thermal spray repair material for a ladle, a preparation method and a use method thereof.
Background
In the use process of the ladle, since the slag solidifies and adheres to the ladle Bao Yan and the ladle wall (such as near the slag line) along with the temperature reduction, the capacity of the ladle and the holding of molten iron are seriously affected along with the extension of the use time of the ladle. Mechanical slag removal can be used when ladle slag adhesion is serious, and slag and ladle refractory materials are seriously adhered, so that slag and part of refractory lining can be brought down during slag removal, part of refractory materials of the ladle are damaged, and the service life of the ladle is seriously influenced. Aiming at the phenomenon, a common method is to manually paint slag-sticking prevention paint on slag-sticking parts such as slag lines, edges and the like of the ladle in advance before molten iron Bao Cheng is connected with the molten iron so as to prevent slag sticking of the ladle. However, the slag-sticking prevention coating used by the method can be manually smeared on the part of the ladle, which needs to be prevented from sticking, after the ladle is cooled, and for some continuously used ladles, the slag sticking is serious due to no cold repair time, so that the ladle iron notch is reduced, the ladle volume is reduced, and the ladle cannot be manually coated with the slag-sticking prevention coating, thereby greatly reducing the service life of the ladle.
Disclosure of Invention
The invention aims to solve the problems that the slag sticking is serious and the service life of a ladle is greatly shortened due to no cold repair time of the ladle which needs to be continuously used at present because the existing ladle slag sticking prevention coating needs to be manually coated and the ladle is cooled to normal temperature, and provides a slag sticking prevention thermal spray repair material for the ladle, a preparation method and a use method thereof. The slag-sticking-preventing thermal-state gunning material for the ladle can be used for spraying construction under the condition of high temperature of the ladle, improves the operating environment of workers, improves the turnover efficiency of the ladle, saves energy and prolongs the service life of the ladle.
The invention relates to a slag-sticking prevention thermal spray repair material for a ladle, which consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
16-18 parts of quartz sand and 3-5 parts of andalusite
16-20 parts of high bauxite and 5-8 parts of silicon carbide particles
1-3 parts of spherical asphalt; 14-20 parts of calcium titanate aluminate
(2) Fine powder raw material
3-6 parts of carbon black and 3-6 parts of bentonite
12.8-18 parts of corundum powder and 10-14 parts of silicon carbide fine powder
αAl 2 O 3 6-10 parts of micro powder; 0.2 to 1 part of slaked lime
(3) Fiber raw material
0.5-1 part of sepiolite and 0.05-0.1 part of organic explosion-proof fiber;
the weight ratio of the granular raw materials to the fine powder raw materials is 55-65:35-45, and the dosage of the fiber raw materials is 0.55-1.1% of the total weight of the granular raw materials and the fine powder raw materials;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 9-11, and the dosage is 9-12% of the total weight of the dry powder raw material.
Preferably, the slag-sticking prevention thermal state gunning material for the ladle consists of dry powder raw materials and a binding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
17 parts of quartz sand and 5 parts of andalusite
High bauxite 16 parts silicon carbide particles 6 parts
2 parts of spherical asphalt; 18 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 3 parts of bentonite
12.8 parts of corundum powder and 11 parts of silicon carbide fine powder
αAl 2 O 3 6 parts of micro powder; slaked lime 0.2 part
(3) Fiber raw material
0.5 part of sepiolite and 0.05 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 9% of the total weight of the dry powder raw material.
The quartz sand SiO 2 The mass percentage of the particles is more than or equal to 99 percent, and the particle size is 0.1-3mm; al in andalusite 2 O 3 Mass fraction of (2) is more than 55%, siO 2 Mass fraction < (2)35%，Fe 2 O 3 The mass fraction of (2) is less than 1.2%, and the grain diameter is 0.1-1mm; al in the high bauxite 2 O 3 More than 80% of Fe by mass 2 O 3 The mass fraction of (2) is less than 1.6%, and the grain diameter is 0.1-3mm; the mass fraction of SiC in the silicon carbide particles is more than or equal to 92%, and the particle size is 0.1-1mm; the mass fraction of the fixed carbon in the spherical asphalt is more than or equal to 45%, the melting point is higher than 150 ℃, and the particle size is 0.1-1mm; al in the calcium titanate aluminate 2 O 3 More than 70 mass percent of SiO 2 More than 70% of TiO by mass 2 The mass fraction of CaO is more than 12 percent, the mass fraction of CaO is less than 11 percent, and the grain diameter is 3-0.1mm; the mass fraction of C in the carbon black is more than or equal to 99 percent, and the particle size is 300-400 meshes; al in the bentonite 2 O 3 More than 12 mass percent of SiO 2 More than 70 mass percent of Fe 2 O 3 The mass fraction of (2) is less than 3.5%, H 2 The mass fraction of O is less than 5%, and the grain diameter is 300-350 meshes; al in the corundum fine powder 2 O 3 More than 99% of mass fraction of Na 2 The mass fraction of O is less than 0.5%, and the grain diameter is 320 meshes; the mass fraction of SiC in the silicon carbide fine powder is more than or equal to 90%, and the particle size is less than or equal to 0.088mm; the alpha Al 2 O 3 Al in the micropowder 2 O 3 The mass fraction of (2) is more than 99%, and the median particle diameter is 5 microns; ca (OH) in the slaked lime 2 The mass fraction of (2) is more than 90%, and the grain diameter is less than or equal to 0.088mm; the mass fraction of MgO in the sepiolite is 54-60%, siO 2 The mass fraction of (2) is 21-25%, H 2 The mass fraction of O is less than 4%, the fiber length is 2-4mm, the melting point of the organic explosion-proof fiber is 110 ℃, and the fiber length is 3-5mm.
The invention discloses a preparation method of a slag-sticking prevention thermal-state gunning material for a ladle, which comprises the following steps of:
(1) Sequentially adding the granular raw materials into a mixer according to the formula proportion, and mixing for 2-3min;
(2) Sequentially adding the fiber raw materials into a mixer according to the formula proportion, and mixing for 1-2min;
(3) Adding the fine powder raw materials into a mixer according to the formula proportion, and mixing for 8-10min;
(4) And (3) sub-packaging the dry powder raw materials mixed in the step (3) according to weight, and matching the silica sol of the bonding agent with corresponding weight ratio for each part of dry powder raw materials according to the weight of the dry powder raw materials.
The invention discloses a using method of a slag-sticking prevention thermal-state gunning material for a ladle, which comprises the following steps of: selecting proper size of a spraying machine according to the size of a ladle, then loading dry powder raw materials into the spraying machine, mixing and adding a bonding agent silica sol at an outlet of the spraying machine, performing hot spraying on the position of the ladle, which is required to repair pits or be sprayed with anti-sticking slag coating, when the temperature of the ladle is reduced to below 1200 ℃, and putting the sprayed ladle into use after the sprayed coating is dried and solidified without waiting for the ladle to be thoroughly cooled.
Preferably, when the temperature of the ladle is reduced to 800-1000 ℃, the hot spraying repair effect on the ladle is best (the rotation use efficiency is higher), and of course, when the temperature of the ladle is continuously reduced to 400-800 ℃ or lower, the hot spraying repair can be adopted, and the hot spraying repair material can be put into use after being dried and solidified as long as the hot spraying repair material is subjected to the hot spraying repair.
In the hot slag adhesion preventing gunning material formula for the ladle, the functions of the raw materials are as follows:
the quartz Sand (SiO) 2 99 percent or more), the grain diameter is 0.1-3mm, and the paint mainly plays a role of refractory aggregate in the spray paint, and can resist the erosion of slag and the scouring of molten iron. The andalusite grain size is 0.1-1mm, the thermal shock stability of the material can be improved in the spray coating, the mullite is transformed in a crystal form in high-temperature use, a certain volume expansion is generated, the compactness of the spray coating is improved, and the slag erosion resistance is improved. The high bauxite has the grain diameter of 0.1-3mm, mainly plays a role of refractory aggregate in spray paint, and resists erosion and melting loss of slag. The grain diameter of the silicon carbide particles (SiC is more than or equal to 92%) is 0.1-1mm, and the silicon carbide particles are used for improving the slag erosion resistance of a material matrix and reducing the adhesion of slag. In the spherical asphalt (fixed carbon is more than or equal to 45 percent, the melting point is higher than 150 ℃), the particle size is 0.1-1mm, and the spherical asphalt is used for increasing the slag erosion resistance of matrix refractory materials and reducing the adhesion of slag. The calcium titanate aluminate (Al 2 O 3 ＞70%，SiO 2 ＞70%，TiO 2 ＞12 percent of CaO less than 11 percent), and the grain diameter is 0.1-3mm, which is used for improving the sintering property of the spray coating and increasing the high Wen Kangzha scouring strength of the spray coating. The carbon black has the particle size of 300-400 meshes (C is more than or equal to 99 percent), and is used for increasing the carbon content of matrix refractory materials and reducing the adhesion of slag to spray paint. In the bentonite (Al 2 O 3 ＞12%，SiO 2 ＞70%，Fe 2 O 3 ＜3.5%，H 2 O is less than 5 percent), the grain diameter is 300 to 350 meshes, and the paint is used for improving the construction performance of the paint and increasing the adhesiveness of the paint during the construction. In the corundum (Al) 2 O 3 ＞99%，Na 2 O is less than 0.5 percent), and the grain diameter is 200-250 meshes, so as to improve the slag erosion resistance of the material matrix. The mass fraction of SiC in the silicon carbide fine powder is more than or equal to 90%, and the particle size is less than or equal to 0.088mm, so that the slag erosion resistance of the matrix is improved. The alpha Al 2 O 3 Al in the micropowder 2 O 3 The mass fraction of the coating is more than 99%, the median grain diameter is 5 microns, and the coating is used for improving the sintering property of a spray coating matrix and improving the adhesiveness of the spray coating. In the slaked lime (Ca (OH) 2 More than 95 percent) of the particle size is less than or equal to 0.088mm, the adhesiveness of the spray coating is improved, and the rapid solidification of the spray coating is promoted. In the sepiolite (MgO: 54-60%, siO) 2 ：21-25%，H 2 O is less than 4 percent), the fiber length is 2-4mm, and the fiber is used for improving the adhesiveness of the spray coating and improving the explosion-proof performance of quick baking of the spray coating. The melting point of the organic explosion-proof fiber is 110 ℃, the fiber length is 3-5mm, and the organic explosion-proof fiber is used for improving the spraying adhesion performance of the spray coating, is favorable for forming a micro channel for discharging water vapor during quick baking of the spray coating, and improves the explosion-proof performance of the spray coating.
When the slag-sticking prevention thermal state gunning material for the ladle is prepared, particle raw materials are uniformly mixed, sepiolite and organic fibers are added to uniformly mix, and finally fine powder raw materials are added. Silica sol is dehydrated and solidified at high temperature and has strong bonding performance. The gunning material disclosed by the invention basically does not contain low-melting-point materials such as sodium oxide and the like which influence the high-temperature performance of the material after construction, has good slag erosion resistance and slag adhesion resistance, has good high-temperature strength, can well isolate high-temperature slag from a ladle refractory material, and prolongs the service life of a ladle.
The beneficial effects of the invention are as follows:
1. the novel ladle thermal spray repair material has good anti-bonding effect on molten iron slag, the molten iron slag is not easy to bond, slag bonded to the ladle is easy to clean, and the refractory material of the ladle is protected from being broken during slag removal. The service efficiency of the ladle can be greatly improved, and the service life of the ladle can be greatly prolonged;
2. the water-based paint is adopted, and the special spray gun is used for spraying and repairing the parts to be treated in time without waiting for cooling of the ladle after the molten iron is discharged, so that the turnover efficiency of the ladle is improved, and the energy is saved.
Detailed Description
In order to better explain the technical solution of the present invention, the following description of the technical solution of the present invention is given by way of example only and not by way of limitation in any way, in conjunction with specific examples.
Example 1
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
17 parts of quartz sand and 5 parts of andalusite
High bauxite 16 parts silicon carbide particles 6 parts
2 parts of spherical asphalt; 18 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 3 parts of bentonite
12.8 parts of corundum powder and 11 parts of silicon carbide fine powder
αAl 2 O 3 6 parts of micro powder; slaked lime 0.2 part
(3) Fiber raw material
0.5 part of sepiolite and 0.05 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 9% of the total weight of the dry powder raw material.
The quartz sand SiO in this example 2 The mass percentage of the particles is more than or equal to 99 percent, and the particle size is 0.1-3mm; al in andalusite 2 O 3 Mass fraction of (2) is more than 55%, siO 2 The mass fraction of (2) is less than 35%, fe 2 O 3 The mass fraction of (2) is less than 1.2%, and the grain diameter is 0.1-1mm; al in the high bauxite 2 O 3 More than 80% of Fe by mass 2 O 3 The mass fraction of (2) is less than 1.6%, and the grain diameter is 0.1-3mm; the mass fraction of SiC in the silicon carbide particles is more than or equal to 92%, and the particle size is 0.1-1mm; the mass fraction of the fixed carbon in the spherical asphalt is more than or equal to 45%, the melting point is higher than 150 ℃, and the particle size is 0.1-1mm; al in the calcium titanate aluminate 2 O 3 More than 70 mass percent of SiO 2 More than 70% of TiO by mass 2 The mass fraction of CaO is more than 12 percent, the mass fraction of CaO is less than 11 percent, and the grain diameter is 0.1-3mm; the mass fraction of C in the carbon black is more than or equal to 99 percent, and the particle size is 300-400 meshes; al in the bentonite 2 O 3 More than 12 mass percent of SiO 2 More than 70 mass percent of Fe 2 O 3 The mass fraction of (2) is less than 3.5%, H 2 The mass fraction of O is less than 5%, and the grain diameter is 300-350 meshes; al in the corundum fine powder 2 O 3 More than 99% of mass fraction of Na 2 The mass fraction of O is less than 0.5%, and the grain diameter is 320 meshes; the mass fraction of SiC in the silicon carbide fine powder is more than or equal to 90%, and the particle size is less than or equal to 0.088mm; the alpha Al 2 O 3 Al in the micropowder 2 O 3 The mass fraction of (2) is more than 99%, and the median particle diameter is 5 microns; ca (OH) in the slaked lime 2 The mass fraction of (2) is more than 90%, and the grain diameter is less than or equal to 0.088mm; the sea is provided withThe mass fraction of MgO in the foam stone is 54-60%, siO 2 The mass fraction of (2) is 21-25%, H 2 The mass fraction of O is less than 4%, the fiber length is 2-4mm, the melting point of the organic explosion-proof fiber is 110 ℃, and the fiber length is 3-5mm.
The preparation method of the slag-sticking prevention thermal spray repair material for the ladle comprises the following steps:
(1) Sequentially adding the granular raw materials into a mixer according to the formula proportion, and mixing for 2-3min;
(2) Sequentially adding the fiber raw materials into a mixer according to the formula proportion, and mixing for 1-2min;
(3) Adding the fine powder raw materials into a mixer according to the formula proportion, and mixing for 8-10min;
(4) And (3) sub-packaging the dry powder raw materials mixed in the step (3) according to weight, and matching the silica sol of the bonding agent with corresponding weight ratio for each part of dry powder raw materials according to the weight of the dry powder raw materials.
In this embodiment, a ladle for tracking a new 5 ton ladle without cold repair hot state rotation is taken as an example, so as to describe a use method and a use effect of the slag-sticking prevention hot state gunning material for the ladle in this embodiment, and the total number of the ladles in this batch is 2, which are used for induction furnace smelting and receiving cast molten iron rotation.
Firstly, according to the embodiment, a ladle with a capacity of 5t is needed to be repaired, a DFPZ-0.5 type spraying machine manufactured by Hunan Ding Feng mechanical Co Ltd is selected (the specific model of the selected spraying machine is selected by manufacturers, other spraying machines meeting the spraying requirements of the embodiment can be selected according to the spraying requirements), before each time of repairing, the area of the ladle needing to be repaired is observed, the amount of the repairing material needed to be used is estimated, the dry powder raw material of the repairing material prepared in the embodiment is filled into the spraying machine, the binding agent silica sol is added at the outlet of the spraying machine, when the temperature of the ladle is reduced to 800-1000 ℃, hot repairing is carried out on the position of the ladle needing to be repaired and the position needing to be sprayed with the anti-sticking slag coating, after the spraying is carried out, the ladle is waited for 30-40 minutes, the spraying material on the ladle is dried and solidified according to the spraying requirements, the spraying material can be directly put into rotary use in a hot state, the use method is repeated, the ladle is repeatedly used for 400 times, and the ladle is thoroughly used after being used for 6 months, and the service life of the ladle is prolonged compared with the non-hot repairing ladle.
Example 2
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
16 parts of quartz sand and 3 parts of andalusite
High bauxite 18 parts silicon carbide particles 6 parts
3 parts of spherical asphalt; 19 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 3 parts of bentonite
12.8 parts of corundum powder and 10 parts of silicon carbide fine powder
αAl 2 O 3 6 parts of micro powder; slaked lime 0.2 part
(3) Fiber raw material
Sepiolite 1 part and organic anti-explosion fiber 0.1 part;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 9, and the dosage is 10% of the total weight of the dry powder raw material.
In this example, the above raw materials were required in the same manner as in example 1.
The preparation method of the slag-sticking prevention thermal spray repair material for the ladle of the embodiment is the same as that of the embodiment 1.
The application method of the slag-sticking prevention thermal spray repair material for the ladle comprises the following steps: selecting proper size of a spraying machine according to the size of a ladle, then loading dry powder raw materials into the spraying machine, mixing and adding a bonding agent silica sol at an outlet of the spraying machine, performing hot spraying on the position of the ladle, which is required to repair pits or be sprayed with anti-sticking slag coating, when the temperature of the ladle is reduced to below 1200 ℃, and putting the sprayed ladle into use after the sprayed coating is dried and solidified without waiting for the ladle to be thoroughly cooled.
Example 3
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
quartz sand 18 parts andalusite 4 parts
High bauxite 20 parts silicon carbide particles 8 parts
1 part of spherical asphalt; 14 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 3 parts of bentonite
12.8 parts of corundum powder and 10 parts of silicon carbide fine powder
αAl 2 O 3 6 parts of micro powder; slaked lime 0.2 part
(3) Fiber raw material
0.8 part of sepiolite and 0.08 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 12% of the total weight of the dry powder raw material.
In this example, the above raw materials were required in the same manner as in example 1.
The preparation method and the application method of the slag-sticking prevention thermal spray repair material for the ladle are the same as those of the embodiment 1 and the embodiment 2.
Example 4
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
16 parts of quartz sand and 3 parts of andalusite
High bauxite 16 parts silicon carbide particles 5 parts
1 part of spherical asphalt; 20 parts of calcium titanium aluminate
(2) Fine powder raw material
6 parts of carbon black and 3 parts of bentonite
Corundum powder 13 parts and silicon carbide fine powder 10 parts
αAl 2 O 3 6 parts of micro powder; slaked lime 1 part
(3) Fiber raw material
0.7 part of sepiolite and 0.06 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 11, and the dosage is 11% of the total weight of the dry powder raw material.
In this example, the above raw materials were required in the same manner as in example 1.
The preparation method and the application method of the slag-sticking prevention thermal spray repair material for the ladle are the same as those of the embodiment 1 and the embodiment 2.
Example 5
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
16 parts of quartz sand and 3 parts of andalusite
High bauxite 20 parts silicon carbide particles 8 parts
1 part of spherical asphalt; 14 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 3 parts of bentonite
Corundum powder 13.5 parts and silicon carbide fine powder 10 parts
αAl 2 O 3 8 parts of micro powder; slaked lime 0.5 part
(3) Fiber raw material
0.5 part of sepiolite and 0.05 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 10% of the total weight of the dry powder raw material.
In this example, the above raw materials were required in the same manner as in example 1.
The preparation method and the application method of the slag-sticking prevention thermal spray repair material for the ladle are the same as those of the embodiment 1 and the embodiment 2.
Example 6
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
16 parts of quartz sand and 3 parts of andalusite
High bauxite 16 parts silicon carbide particles 5 parts
1 part of spherical asphalt; 14 parts of calcium titanium aluminate
(2) Fine powder raw material
6 parts of carbon black and 3 parts of bentonite
15.5 parts of corundum powder and 10 parts of silicon carbide fine powder
αAl 2 O 3 10 parts of micro powder; slaked lime 0.5 part
(3) Fiber raw material
0.9 part of sepiolite and 0.09 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 12% of the total weight of the dry powder raw material.
In this example, the above raw materials were required in the same manner as in example 1.
The preparation method and the application method of the slag-sticking prevention thermal spray repair material for the ladle are the same as those of the embodiment 1 and the embodiment 2.
Example 7
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
16 parts of quartz sand and 3 parts of andalusite
High bauxite 16 parts silicon carbide particles 5 parts
1 part of spherical asphalt; 14 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 6 parts of bentonite
13.2 parts of corundum powder and 14 parts of silicon carbide fine powder
αAl 2 O 3 8 parts of micro powder; slaked lime 0.8 parts
(3) Fiber raw material
0.6 part of sepiolite and 0.06 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 10% of the total weight of the dry powder raw material.
In this example, the above raw materials were required in the same manner as in example 1.
The preparation method and the application method of the slag-sticking prevention thermal spray repair material for the ladle are the same as those of the embodiment 1 and the embodiment 2.
Example 8
The slag-sticking prevention thermal spray repair material for the ladle consists of dry powder raw materials and a bonding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
16 parts of quartz sand and 3 parts of andalusite
High bauxite 16 parts silicon carbide particles 5 parts
1 part of spherical asphalt; 14 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 3 parts of bentonite
Corundum powder 18 parts and silicon carbide fine powder 10 parts
αAl 2 O 3 10 parts of micro powder; slaked lime 1 part
(3) Fiber raw material
0.7 part of sepiolite and 0.07 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 11% of the total weight of the dry powder raw material.
In this example, the above raw materials were required in the same manner as in example 1.
The preparation method and the application method of the slag-sticking prevention thermal spray repair material for the ladle are the same as those of the embodiment 1 and the embodiment 2.
The above eight embodiments are merely specific examples of the present invention which are exemplified for explaining the present invention, and the present invention is not limited in any way, and any insubstantial changes made from the above matters and forms without departing from the scope of the claims of the present invention should be construed as falling within the scope of the claims of the present invention.
Claims (3)
1. The slag-sticking prevention thermal state gunning material for the ladle is characterized by comprising dry powder raw materials and a binding agent, wherein the dry powder raw materials comprise a particle raw material, a fine powder raw material and a fiber raw material, and the dry powder raw materials comprise the following raw materials in parts by weight:
the raw materials of the particles are as follows:
16-18 parts of quartz sand and 3-5 parts of andalusite
16-20 parts of high bauxite and 5-8 parts of silicon carbide particles
1-3 parts of spherical asphalt; 14-20 parts of calcium titanate aluminate
(2) Fine powder raw material
3-6 parts of carbon black and 3-6 parts of bentonite
12.8-18 parts of corundum powder and 10-14 parts of silicon carbide fine powder
αAl 2 O 3 6-10 parts of micro powder; 0.2 to 1 part of slaked lime
(3) Fiber raw material
0.5-1 part of sepiolite and 0.05-0.1 part of organic explosion-proof fiber;
the weight ratio of the granular raw materials to the fine powder raw materials is 55-65:35-45, and the dosage of the fiber raw materials is 0.55-1.1% of the total weight of the granular raw materials and the fine powder raw materials;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of the powder is 20%, the pH is 9-11, and the dosage is 9-12% of the total weight of the dry powder raw material;
the preparation method of the slag-sticking prevention thermal-state gunning material for the ladle comprises the following steps:
(1) Sequentially adding the granular raw materials into a mixer according to the formula proportion, and mixing for 2-3min;
(2) Sequentially adding the fiber raw materials into a mixer according to the formula proportion, and mixing for 1-2min;
(3) Adding the fine powder raw materials into a mixer according to the formula proportion, and mixing for 8-10min;
(4) Sub-packaging the dry powder raw materials mixed in the step (3) according to weight, and matching the silica sol of the bonding agent with corresponding weight ratio for each part of dry powder raw materials according to the weight of the dry powder raw materials to obtain the composite material;
the application method of the slag-sticking prevention thermal-state gunning material for the ladle comprises the following steps of: selecting proper size of a spraying machine according to the size of a ladle, then loading dry powder raw materials into the spraying machine, mixing and adding a bonding agent silica sol at an outlet of the spraying machine, performing hot spraying on the position of the ladle, which is required to repair pits or be sprayed with anti-sticking slag coating, when the temperature of the ladle is reduced to 800-1000 ℃, and putting the sprayed ladle into use after the sprayed coating is dried and solidified without waiting for the ladle to be thoroughly cooled.
2. The slag-sticking prevention thermal spray repair material for a ladle according to claim 1, which is characterized by comprising a dry powder raw material and a binding agent, wherein the dry powder raw material comprises a granular raw material, a fine powder raw material and a fiber raw material, and comprises the following raw materials in parts by weight:
(1) The raw materials of the particles are as follows:
17 parts of quartz sand and 5 parts of andalusite
High bauxite 16 parts silicon carbide particles 6 parts
2 parts of spherical asphalt; 18 parts of calcium titanium aluminate
(2) Fine powder raw material
3 parts of carbon black and 3 parts of bentonite
12.8 parts of corundum powder and 11 parts of silicon carbide fine powder
αAl 2 O 3 6 parts of micro powder; slaked lime 0.2 part
(3) Fiber raw material
0.5 part of sepiolite and 0.05 part of organic explosion-proof fiber;
the bonding agent adopts sodium silica sol and SiO 2 The mass fraction of (2) is 20%, the pH is 10, and the dosage is 9% of the total weight of the dry powder raw material.
3. A ladle slag adhesion preventing thermal spray repair material according to claim 1 or 2, wherein: the quartz sand SiO 2 The mass percentage of the particles is more than or equal to 99 percent, and the particle size is 0.1-3mm; al in andalusite 2 O 3 Mass fraction of (2) is more than 55%, siO 2 The mass fraction of (2) is less than 35%, fe 2 O 3 The mass fraction of (2) is less than 1.2%, and the grain diameter is 0.1-1mm; al in the high bauxite 2 O 3 More than 80% of Fe by mass 2 O 3 The mass fraction of (2) is less than 1.6%, and the grain diameter is 0.1-3mm; the mass fraction of SiC in the silicon carbide particles is more than or equal to 92%, and the particle size is 0.1-1mm; the mass fraction of the fixed carbon in the spherical asphalt is more than or equal to 45%, the melting point is higher than 150 ℃, and the particle size is 0.1-1mm; al in the calcium titanate aluminate 2 O 3 More than 70 mass percent of SiO 2 More than 70% of TiO by mass 2 The mass fraction of CaO is more than 12 percent, the mass fraction of CaO is less than 11 percent, and the grain diameter is 0.1-3mm; the mass fraction of C in the carbon black is more than or equal to 99 percent, and the particle size is 300-400 meshes; al in the bentonite 2 O 3 More than 12 mass percent of SiO 2 More than 70 mass percent of Fe 2 O 3 The mass fraction of (2) is less than 3.5%, H 2 The mass fraction of O is less than 5%, and the grain diameter is 300-350 meshes; al in the corundum powder 2 O 3 More than 99% of mass fraction of Na 2 The mass fraction of O is less than 0.5%, and the grain diameter is 320 meshes; the mass fraction of SiC in the silicon carbide fine powder is more than or equal to 90%, and the particle size is less than or equal to 0.088mm; the alpha Al 2 O 3 Al in the micropowder 2 O 3 The mass fraction of (2) is more than 99%, and the median particle diameter is 5 microns; ca (OH) in the slaked lime 2 The mass fraction of (2) is more than 90%, and the grain diameter is less than or equal to 0.088mm; the mass fraction of MgO in the sepiolite is 54-60%, siO 2 The mass fraction of (2) is 21-25%, H 2 The mass fraction of O is less than 4%, the fiber length is 2-4mm, the melting point of the organic explosion-proof fiber is 110 ℃, and the fiber length is 3-5mm.
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