CN111718199A - Refractory heat-insulating ladle castable - Google Patents
Refractory heat-insulating ladle castable Download PDFInfo
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- CN111718199A CN111718199A CN202010457384.5A CN202010457384A CN111718199A CN 111718199 A CN111718199 A CN 111718199A CN 202010457384 A CN202010457384 A CN 202010457384A CN 111718199 A CN111718199 A CN 111718199A
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- clay
- ladle
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- 239000004927 clay Substances 0.000 claims abstract description 45
- 229910052570 clay Inorganic materials 0.000 claims abstract description 40
- 239000004568 cement Substances 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 12
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 11
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 11
- 239000007767 bonding agent Substances 0.000 claims abstract description 10
- 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 claims abstract description 9
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 7
- 150000004645 aluminates Chemical class 0.000 claims abstract description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000001509 sodium citrate Substances 0.000 claims abstract description 4
- 235000011083 sodium citrates Nutrition 0.000 claims abstract description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052742 iron Inorganic materials 0.000 abstract description 10
- 238000005266 casting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
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- C04B33/00—Clay-wares
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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
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—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
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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Abstract
The invention relates to the technical field of foundry ladle castable, in particular to refractory and heat-insulating foundry ladle castable which comprises the following components in percentage by mass: 60-90% of aggregate, 0-10% of a binding agent, 0-5% of a dispersing agent and 0-5% of a water reducing agent; wherein the aggregate is composed of flint clay, mullite and silicon carbide; the bonding agent is composed of one or more of refractory cement, pure aluminate cement and refractory clay; the dispersing agent is composed of one or more of sodium tripolyphosphate, sodium hexametaphosphate, sodium citrate and nano-alumina; the water reducing agent is composed of one or more of ethyl acetate and nano silicon dioxide. According to the invention, a proper amount of silicon carbide and flint clay are added into the ladle castable, so that the high temperature resistance and the service life of the ladle are improved, and the ladle is prevented from being stuck by molten iron.
Description
Technical Field
The invention relates to the technical field of ladle castable, in particular to a refractory and heat-insulating ladle castable.
Background
At present, most of the small and medium-sized ladle linings at home and abroad are made of common refractory castable. The traditional refractory castable materials are mostly clay and high-alumina, and also magnesium, chromium, zircon and the like. They all have the common characteristic that a large amount of clay and bonding agent are added to ensure the strength of the material and facilitate construction. The addition of the clay and the bonding agent can reduce the refractoriness of the castable, generate liquid phase shrinkage at high temperature, and are easy to be soaked by molten iron to cause damage, so that the conventional common castable is short in service life when used as a molten iron ladle lining.
In recent years, with the development of technologies such as superfine powder, novel additives and the like, the service life of the foundry ladle can be remarkably prolonged by adding silicon carbide into the foundry ladle castable. Silicon carbide is a refractory raw material with excellent performance, and has the advantages of high heat conduction, low thermal expansion, good thermal shock stability, no reaction with slag and the like. The proper amount of silicon carbide is added into the foundry ladle castable, so that the high temperature resistance and the thermal shock stability of the castable can be obviously improved, and the molten iron and slag corrosion resistance of the ladle lining can be improved. However, because the silicon carbide has large volume density and high thermal conductivity, when the silicon carbide is used in combination with high-alumina bauxite aggregate, the heat dissipation of the foundry ladle is easy to be too fast, so that the heat preservation effect of the foundry ladle is influenced, and the phenomenon that molten iron is stuck to the ladle often occurs, so that the casting ladle and the production progress are influenced.
Disclosure of Invention
The invention aims to provide a refractory and heat-insulating foundry ladle castable aiming at the defects of the prior art, which is added with a proper amount of silicon carbide and flint clay simultaneously in the prior foundry ladle castable so as to improve the high-temperature resistance and the heat-insulating property of the foundry ladle.
The technical scheme adopted by the invention for solving the technical problems is as follows: a refractory heat-insulating foundry ladle castable comprises the following components in percentage by mass: 60-90% of aggregate, 0-10% of a binding agent, 0-5% of a dispersing agent and 0-5% of a water reducing agent; wherein the aggregate is composed of flint clay, mullite and silicon carbide; the bonding agent is composed of one or more of refractory cement, pure aluminate cement and refractory clay; the dispersing agent is composed of one or more of sodium tripolyphosphate, sodium hexametaphosphate, sodium citrate and nano-alumina; the water reducing agent is composed of one or more of ethyl acetate and nano silicon dioxide.
Preferably, the aggregate components are as follows by mass percent: 20-30% of 5-3 mm flint clay aggregate, 10-20% of 3-1 mm flint clay aggregate, 15-30% of 1-0 mm mullite aggregate, 0-15% of 200-mesh flint clay powder and 3-6% of 1250-mesh silicon carbide powder.
Preferably, Al in said flint clay2O3Not less than 45% of Fe2O3The content is not more than 1.2 percent, and the density is not less than 2.50g/cm 3.
Preferably, the bonding agent comprises 3-7% of refractory cement and 2-5% of refractory clay, wherein the refractory cement is pure calcium aluminate cement, the mesh number is more than or equal to 300-500 meshes, and Al in the refractory clay2O3The content of the refractory clay is 40-45%, and the refractory clay with the fineness of less than 200 meshes accounts for 90%.
Preferably, the dispersing agent comprises 0-5% of sodium tripolyphosphate and 0-5% of nano alumina, wherein the sodium tripolyphosphate with the particle size smaller than 1mm accounts for 98%, and the fineness of the nano alumina is 20-45 nm.
Preferably, the water reducing agent is nano-silicon dioxide, wherein the fineness of the nano-silicon dioxide is less than 20-40 nm and accounts for 99.6%.
Preferably, the method for manufacturing the foundry ladle by adopting the refractory and heat-insulating foundry ladle castable comprises the following steps: the aggregate, the bonding agent, the dispersing agent and the water reducing agent are weighed strictly according to the proportion, poured into a stirrer, added with 5-7 percent of water, stirred for 3 minutes to be uniformly mixed to form mortar with certain fluidity, poured into a mold, dried for 24 hours in a natural environment, demoulded and baked, and finally the mortar is obtained after baking.
The invention has the beneficial effects that: a refractory heat-insulating foundry ladle castable comprises the following components in percentage by mass: 60-90% of aggregate, 0-10% of a binding agent, 0-5% of a dispersing agent and 0-5% of a water reducing agent; wherein the aggregate is composed of flint clay, mullite and silicon carbide; the bonding agent is composed of one or more of refractory cement, pure aluminate cement and refractory clay; the dispersing agent is composed of one or more of sodium tripolyphosphate, sodium hexametaphosphate, sodium citrate and nano-alumina; the water reducing agent is composed of one or more of ethyl acetate and nano silicon dioxide. According to the invention, a proper amount of silicon carbide and flint clay are added into the ladle castable, so that the high temperature resistance and the service life of the ladle are improved, and the ladle is prevented from being stuck by molten iron.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited thereto.
The first embodiment.
The refractory and heat-insulating foundry ladle castable adopted in the embodiment comprises the following components:
a) aggregate: 20-30% of 5-3 mm flint clay aggregate,
10-20% of 3-1 mm flint clay aggregate,
15-30% of 1-0 mm mullite aggregate,
0 to 15 percent of 200-mesh flint clay powder,
3-6% of 1250-mesh silicon carbide powder;
b) binding agent: 3-7% of refractory cement and 2-5% of refractory clay, wherein the refractory cement is pure calcium aluminate cement with the mesh number being more than or equal to 300-500 meshes, and Al in the refractory clay2O3The content of the refractory clay is 40-45%, and the refractory clay with the fineness of less than 200 meshes accounts for 90%;
c) dispersing agent: 0-5% of sodium tripolyphosphate, and 98% of sodium tripolyphosphate with the particle size less than 1 mm;
d) water reducing agent: 0-5% of nano silicon dioxide;
the sum of the solid components is 100 percent.
Example two.
The refractory and heat-insulating foundry ladle castable adopted in the embodiment comprises the following components:
a) aggregate: 20-30% of 5-3 mm flint clay aggregate,
10-20% of 3-1 mm flint clay aggregate,
15-30% of 1-0 mm mullite aggregate,
0 to 15 percent of 200-mesh flint clay powder,
3-6% of 1250-mesh silicon carbide powder;
b) binding agent: 3-7% of refractory cement and 2-5% of refractory clay;
c) dispersing agent: 0-5% of nano alumina, and the fineness of the nano alumina is 20-45 nm;
d) water reducing agent: 0-5% of nano silicon dioxide;
the sum of the solid components is 100 percent.
Example three.
The refractory and heat-insulating foundry ladle castable adopted in the embodiment comprises the following components:
a) aggregate: 30 percent of 5-3 mm flint clay aggregate,
20 percent of 3-1 mm flint clay aggregate,
15 percent of 1-0 mm mullite aggregate,
15 percent of 200-mesh flint clay powder,
5 percent of 1250-mesh silicon carbide powder;
b) binding agent: 5% of refractory cement and 2% of refractory clay;
c) dispersing agent: 0.2 percent of sodium tripolyphosphate and 3.8 percent of nano aluminum oxide;
d) water reducing agent: 4% of nano silicon dioxide;
the casting materials are prepared according to the component proportion of the three embodiments, and then poured into a stirrer, 5% -7% of water is added, the mixture is stirred for 3 minutes to be uniformly mixed to form mortar with certain fluidity, the mortar is poured into a mold, and the mortar is dried for 24 hours in a natural environment, is solidified, is demoulded and is baked to be molded. Compared with the prior common castable ladle, the service life of the ladle is about 700 furnaces, the temperature of molten iron is reduced to more than 120 ℃ in the casting process, and the phenomenon of ladle sticking of the molten iron is also frequently caused; the three embodiments of the invention can pour the ladle, the whole service life of the ladle reaches the campaign of 1130-1180 furnaces, and the temperature drop of the molten iron in the ladle is controlled within 50 ℃, so that the phenomenon that the molten iron is stuck to the ladle does not occur any more.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A refractory heat-insulating foundry ladle castable is characterized in that: the components by mass percentage are as follows: 60-90% of aggregate, 0-10% of a binding agent, 0-5% of a dispersing agent and 0-5% of a water reducing agent; wherein the aggregate is composed of flint clay, mullite and silicon carbide; the bonding agent is composed of one or more of refractory cement, pure aluminate cement and refractory clay; the dispersing agent is composed of one or more of sodium tripolyphosphate, sodium hexametaphosphate, sodium citrate and nano-alumina; the water reducing agent is composed of one or more of ethyl acetate and nano silicon dioxide.
2. The refractory heat-insulating ladle castable as recited in claim 1, wherein: the aggregate comprises the following components in percentage by mass: 20-30% of 5-3 mm flint clay aggregate, 10-20% of 3-1 mm flint clay aggregate, 15-30% of 1-0 mm mullite aggregate, 0-15% of 200-mesh flint clay powder and 3-6% of 1250-mesh silicon carbide powder.
3. The refractory heat-insulating ladle castable as claimed in claim 2, wherein: al in the flint clay2O3Content greater than 45%, Fe2O3The content is less than 1.2 percent, and the density is more than 2.50g/cm 3.
4. The refractory heat-insulating ladle castable as recited in claim 1, wherein: the bonding agent comprises 3-7% of refractory cement and 2-5% of refractory clay, wherein the refractory cement is pure calcium aluminate cement, the mesh number is more than or equal to 300-500 meshes, and Al in the refractory clay2O3The content of the refractory clay is 40-45%, and the refractory clay with the fineness of less than 200 meshes accounts for 90%.
5. The refractory heat-insulating ladle castable as recited in claim 1, wherein: the dispersing agent comprises 0-5% of sodium tripolyphosphate and 0-5% of nano alumina, wherein the sodium tripolyphosphate with the granularity smaller than 1mm accounts for 98%, and the fineness of the nano alumina is 20-45 nm.
6. The refractory heat-insulating ladle castable as recited in claim 1, wherein: the water reducing agent is nano-silicon dioxide, wherein the fineness of the nano-silicon dioxide is less than 20-40 nm and accounts for 99.6%.
7. The method of claim 1 for making a ladle from a refractory insulating ladle castable, wherein: the aggregate, the bonding agent, the dispersing agent and the water reducing agent are weighed strictly according to the proportion, poured into a stirrer, added with 5-7 percent of water, stirred for 3 minutes to be uniformly mixed to form mortar with certain fluidity, poured into a mold, dried for 24 hours in a natural environment, demoulded and baked, and finally the mortar is obtained after baking.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941268A (en) * | 2021-02-01 | 2021-06-11 | 鞍山市和丰耐火材料有限公司 | Production process of crack-free long-life composite desulfurization powder gun and powder gun structure |
| CN113045322A (en) * | 2021-03-17 | 2021-06-29 | 北京金隅通达耐火技术有限公司 | High-thermal-conductivity wear-resistant castable prepared from secondary silicon mullite bricks |
| CN113929363A (en) * | 2021-09-26 | 2022-01-14 | 中国化学工程第十四建设有限公司 | High-temperature-resistant mortar for aircraft engine exhaust tower and preparation process thereof |
| CN114409348A (en) * | 2021-12-31 | 2022-04-29 | 北京纽维逊建筑工程技术有限公司 | High-temperature high-strength heat-resistant concrete and preparation method and application thereof |
| CN114988893A (en) * | 2022-05-27 | 2022-09-02 | 襄阳聚力新材料科技有限公司 | Ladle refractory castable |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440952A (en) * | 2003-04-01 | 2003-09-10 | 武汉钢铁(集团)公司 | Refractory cast material for desulfurizing gunite |
| CN101337821A (en) * | 2008-08-15 | 2009-01-07 | 上海宝湘耐火材料有限公司 | Low density fire resistant pouring material for KR stirring paddle |
| CN101525244A (en) * | 2009-03-26 | 2009-09-09 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method for middle density wear-resistant refractory casting material |
| CN101618966A (en) * | 2008-06-30 | 2010-01-06 | 上海梅山钢铁股份有限公司 | Ladle castable |
| CN105036754A (en) * | 2014-12-30 | 2015-11-11 | 江苏财经职业技术学院 | High-strength castable for prolonging service life of desulfuration spray gun and preparation method thereof |
| CN107344860A (en) * | 2017-07-18 | 2017-11-14 | 攀枝花市昌宁冶金材料有限责任公司 | Mould material and pouring procedure for hot-metal bottle |
| CN109293380A (en) * | 2018-11-28 | 2019-02-01 | 江苏恒耐炉料集团有限公司 | A kind of low temperature crusting resistant pouring material |
| CN109534829A (en) * | 2017-09-21 | 2019-03-29 | 宝山钢铁股份有限公司 | A kind of KR desulfurization agitating paddle castable and preparation method thereof |
| CN109650920A (en) * | 2019-02-21 | 2019-04-19 | 襄阳聚力新材料科技有限公司 | A kind of ladle plastic refractory of in-situ carburization silicon whisker reinforcement |
| CN110723963A (en) * | 2019-10-31 | 2020-01-24 | 中冶武汉冶金建筑研究院有限公司 | Blast furnace tapping channel castable containing nano alumina and preparation method thereof |
-
2020
- 2020-05-26 CN CN202010457384.5A patent/CN111718199A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1440952A (en) * | 2003-04-01 | 2003-09-10 | 武汉钢铁(集团)公司 | Refractory cast material for desulfurizing gunite |
| CN101618966A (en) * | 2008-06-30 | 2010-01-06 | 上海梅山钢铁股份有限公司 | Ladle castable |
| CN101337821A (en) * | 2008-08-15 | 2009-01-07 | 上海宝湘耐火材料有限公司 | Low density fire resistant pouring material for KR stirring paddle |
| CN101525244A (en) * | 2009-03-26 | 2009-09-09 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method for middle density wear-resistant refractory casting material |
| CN105036754A (en) * | 2014-12-30 | 2015-11-11 | 江苏财经职业技术学院 | High-strength castable for prolonging service life of desulfuration spray gun and preparation method thereof |
| CN107344860A (en) * | 2017-07-18 | 2017-11-14 | 攀枝花市昌宁冶金材料有限责任公司 | Mould material and pouring procedure for hot-metal bottle |
| CN109534829A (en) * | 2017-09-21 | 2019-03-29 | 宝山钢铁股份有限公司 | A kind of KR desulfurization agitating paddle castable and preparation method thereof |
| CN109293380A (en) * | 2018-11-28 | 2019-02-01 | 江苏恒耐炉料集团有限公司 | A kind of low temperature crusting resistant pouring material |
| CN109650920A (en) * | 2019-02-21 | 2019-04-19 | 襄阳聚力新材料科技有限公司 | A kind of ladle plastic refractory of in-situ carburization silicon whisker reinforcement |
| CN110723963A (en) * | 2019-10-31 | 2020-01-24 | 中冶武汉冶金建筑研究院有限公司 | Blast furnace tapping channel castable containing nano alumina and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941268A (en) * | 2021-02-01 | 2021-06-11 | 鞍山市和丰耐火材料有限公司 | Production process of crack-free long-life composite desulfurization powder gun and powder gun structure |
| CN113045322A (en) * | 2021-03-17 | 2021-06-29 | 北京金隅通达耐火技术有限公司 | High-thermal-conductivity wear-resistant castable prepared from secondary silicon mullite bricks |
| CN113045322B (en) * | 2021-03-17 | 2022-09-06 | 北京金隅通达耐火技术有限公司 | High-thermal-conductivity wear-resistant castable prepared from secondary silicon mullite bricks |
| CN113929363A (en) * | 2021-09-26 | 2022-01-14 | 中国化学工程第十四建设有限公司 | High-temperature-resistant mortar for aircraft engine exhaust tower and preparation process thereof |
| CN114409348A (en) * | 2021-12-31 | 2022-04-29 | 北京纽维逊建筑工程技术有限公司 | High-temperature high-strength heat-resistant concrete and preparation method and application thereof |
| CN114988893A (en) * | 2022-05-27 | 2022-09-02 | 襄阳聚力新材料科技有限公司 | Ladle refractory castable |
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