CN104355636A - RH furnace dip pipe castable and preparation method thereof - Google Patents
RH furnace dip pipe castable and preparation method thereof Download PDFInfo
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- CN104355636A CN104355636A CN201410606979.7A CN201410606979A CN104355636A CN 104355636 A CN104355636 A CN 104355636A CN 201410606979 A CN201410606979 A CN 201410606979A CN 104355636 A CN104355636 A CN 104355636A
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- corundum
- spinel
- percent
- ramming mass
- mould material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
Abstract
The invention relates to an RH furnace dip pipe castable and a preparation method thereof. The RH furnace dip pipe castable comprises the following raw materials by weight percent: main raw materials: 5-55 percent of a waste chrome corundum-spinel ramming mass, 30-80 percent of corundum, 2-8 percent of active alpha-alumina powder, 2-8 percent of CL370 powder, and 1-9 percent of calcium aluminate cement; applied raw materials: 0.2-1.2 parts of a water reducing agent, 0.5-3 percent of a steel fiber and 0.01-0.2 percent of an explosion-proof fiber. The preparation method comprises the following steps: preparing, burdening, mixing and forming. The chrome corundum-spinel ramming mass mainly comprises corundum, spinel and chromium oxide; the corundum has favorable high-temperature volume stability and favorable metal melt corrosion resistance, the spinel has favorable high-temperature performance, favorable thermal shock resistance and favorable corrosion resistance; the chromium oxide has high corrosion resistance; therefore, the chrome corundum-spinel ramming mass serves as part of ingredients to be introduced in the castable, and not only are the corrosion resistance and the thermal shock resistance of the castable solved well, and the service life of an RH furnace dip pipe is prolonged, but also the purpose of turning waste into wealth is achieved, resources are saved, and cost reduction and efficiency enhancement are benefited for an enterprises.
Description
Technical field
The present invention relates to technical field of refractory materials, particularly a kind of RH stove soaking tub mould material and preparation method thereof.
Background technology
RH refining furnace is the visual plant of steel-making, is equip for the production of the molten steel refining technology of high-quality steel.In RH refining furnace, the Working environment of soaking tub is the most severe, that RH stove suffers to corrode the most serious position, this mainly due to soaking tub inwall directly and steel contacts, wash away by high velocity air again and the stress impact of suddenly cold and hot after steel treatment, the outer wall of soaking tub is again directly with slag contacts and the same stress impact being subject to suddenly cold and hot simultaneously.Soaking tub seriously causes its work-ing life very short because the mould material at soaking tub place suffers to corrode, so also just can increase the replacing number of times of soaking tub undoubtedly thus cause increasing of RH stove inner vacuum chamber suddenly cold and hot number of times, shorten in the middle part of RH stove, work-ing life of bottom construction, visible, RH stove soaking tub is the key link of restriction RH furnace li`, and the work-ing life of therefore improving RH stove soaking tub is most important.
From elaboration above, between the thermal spalling that high-temperature molten steel and slag cause the erosion of mould material and souring, temperature fluctuation and structure spalling, soaking tub each material, the difference of hot expansibility is the major cause causing mould material to be damaged, and therefore will improve the anti-erosion that will improve RH stove soaking tub mould material work-ing life and the heat-shock resistance of RH stove soaking tub.At present in order to improve anti-erosion and the heat-shock resistance of RH stove soaking tub mould material, general employing burns till magnesia chrome brick as mould material, but traditional to burn till magnesia chrome brick article manufacturing cycle long, and energy consumption is high, also can cause the pollution of environment in using; And alkali-resistivity slag weak effect, easily peel off.
In order to solve the problem, the present invention proposes and a kind ofly can improve soaking tub mould material anti-erosion and thermal shock resistance and low RH stove soaking tub mould material of cost and preparation method thereof.
Summary of the invention
Instant invention overcomes above-mentioned the deficiencies in the prior art, provide and a kind ofly can improve soaking tub mould material anti-erosion and thermal shock resistance and RH stove soaking tub mould material of low cost and preparation method thereof.
Technical scheme of the present invention is achieved in that
A kind of RH stove soaking tub mould material, the constitutive material components by weight percentage of this mould material is:
Described useless chromium corundum-spinel ramming mass is made up of corundum, aluminum-spinel and chromic oxide, and weight percent >=20% of the aluminum-spinel in chromium corundum-spinel ramming mass that gives up, weight percent >=3% of chromic oxide; And useless chromium corundum-spinel ramming mass size composition is 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications.
Chromium corundum-spinel ramming mass is primarily of corundum, aluminum-spinel, chromic oxide 3 kinds of thing phase composites, wherein corundum has good high volume stability and anti-metal melt attack, aluminum-spinel not only has good properties at high temperature and also has excellent thermal-shock resistance and resistance to fouling outward, chromic oxide also has good erosion-resisting characteristics, therefore chromium corundum-spinel ramming mass is introduced in mould material as part batching, not only solve anti-erosion and the thermal shock resistance of mould material very well, improve the work-ing life of RH stove soaking tub, and turn waste into wealth, economize on resources, be conducive to enterprise's cost efficiency, active alpha-aluminium oxide powder has higher chemical stability, has the large feature of acid-fast alkali-proof physical strength, aluminous cement is bonding agent, provides the bonding strength of mould material, steel fiber is in order to increase mould material folding strength, explosion-proof fiber, in order to increase product ventilation property, can prevent bursting of mould material, can the thermal shock resistance of more effective enhancing mould material.Described water reducer reduces amount of water, and reducing that void content also has is exactly increase pouring material to add water the dispersiveness stirred.Described explosion-proof fiber is in order to increase toast spatter-proof performance.Wherein, described water reducer, steel fiber and the equal admixture of explosion-proof fiber, the consumption size of admixture is the corresponding change along with climate temperature change.
As preferably, the corundum in described raw material composition is fused white corundum, sub-white corundum and plate diamond spar composition; And corundum size composition be 12 ~ 8mm 15%, 8 ~ 5mm 20%, 5 ~ 3mm 20%, 3 ~ 1mm 15%, 1 ~ 0.5mm 5%, 10% of 0.5 ~ 0.088mm, 15% 7 kind of specification of < 0.088mm; The Al wherein contained in corundum
2o
3weight percent>=98.5%.
As preferably, described water reducer is the mixing of one or more arbitrary proportions in FDN, ADS and ADW.
FDN is high efficiency composition water reducer, and main component is beta-naphthalenesulfonic-acid formaldehyde condensation compound, and its water-reducing rate is high, can increase substantially the intensity of mould material; Dispersed alumina ADS and ADW can be widely used in corundum castable and goods.
A preparation method for RH stove soaking tub mould material, comprises the following steps:
(1) system material: chromium corundum-spinel ramming mass is given up after selection and surperficial scarfing cinder process to bulk, Mechanical Crushing is carried out successively again through jaw crusher, oppositely rolling roller crusher, cone crusher, then send into ball mill and carry out fine grinding, again after sieved through sieve, make the classification material that granularity is respectively 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications;
(2) prepare burden: according to the proportion relation of described each constitutive material, useless chromium corundum-spinel ramming mass, corundum, active alpha-aluminium oxide powder, CL370 powder, aluminous cement, water reducer, steel fiber, explosion-proof fiber respectively after configuration process, be prepared into siccative work in-process;
(3) batch mixing: the raw material prepared is sent into mixer, until mix;
(4) shaping: add water in the raw material after mixing, amount of water is 3 ~ 7% of compound total amount weight percent, wherein batch mixing time >=5 minutes; Adopt vibrating head to insert vibratory compaction simultaneously.
Wherein said jaw crusher is coarse breaking, and pair roller type is fine crushing, circular cone type be again fine crushing; Adopt vibrating head to insert vibratory compaction, be beneficial to exhaust.The simple cost of this mould material preparation method technique is low.
Have employed the invention has the beneficial effects as follows of technique scheme:
The present invention relates to and a kind ofly can improve soaking tub mould material anti-erosion and thermal shock resistance and RH stove soaking tub mould material of low cost and preparation method thereof.The present invention mainly adopt medium-frequency induction furnace with after chromium corundum-spinel ramming mass carry out after processing as reworked material, chromium corundum-spinel ramming mass is primarily of corundum, aluminum-spinel, chromic oxide 3 kinds of thing phase composites, wherein corundum has good high volume stability and anti-metal melt attack, aluminum-spinel not only has good properties at high temperature and also has excellent thermal-shock resistance and resistance to fouling outward, chromic oxide also has good erosion-resisting characteristics, therefore chromium corundum-spinel ramming mass is introduced in mould material as part batching, not only solve anti-erosion and the thermal shock resistance of mould material very well, improve the work-ing life of RH stove soaking tub, and turn waste into wealth, economize on resources, be conducive to enterprise's cost efficiency.
Embodiment
The specific embodiment of the present invention is as follows:
Embodiment 1: a kind of RH stove soaking tub mould material, the constitutive material components by weight percentage of this mould material is:
Wherein water reducer is the mixing of ADS and ADW, and its mass percent is respectively 0.2% and 0.5%; Described water reducer, steel fiber and the equal admixture of explosion-proof fiber, the consumption size of admixture is total up to 2.58%.
Specifically, described useless chromium corundum-spinel ramming mass is made up of corundum, aluminum-spinel and chromic oxide, and the weight percent 20% of the aluminum-spinel in chromium corundum-spinel ramming mass that gives up, the weight percent 3% of chromic oxide; And useless chromium corundum-spinel ramming mass size composition is 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications.
Described corundum is fused white corundum, sub-white corundum and plate diamond spar composition; And corundum size composition be 12 ~ 8mm 15%, 8 ~ 5mm 20%, 5 ~ 3mm 20%, 3 ~ 1mm 15%, 1 ~ 0.5mm 5%, 10% of 0.5 ~ 0.088mm, 15% 7 kind of specification of < 0.088mm; The Al wherein contained in corundum
2o
3weight percent 98.5%.
A preparation method for RH stove soaking tub mould material, comprises the following steps:
(1) system material: chromium corundum-spinel ramming mass is given up after selection and surperficial scarfing cinder process to bulk, Mechanical Crushing is carried out successively again through jaw crusher, oppositely rolling roller crusher, cone crusher, then send into ball mill and carry out fine grinding, again after sieved through sieve, make the classification material that granularity is respectively 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications;
(2) prepare burden: according to the proportion relation of described each constitutive material, useless chromium corundum-spinel ramming mass, corundum, active alpha-aluminium oxide powder, CL370 powder, aluminous cement, water reducer, steel fiber, explosion-proof fiber respectively after configuration process, be prepared into siccative work in-process;
(3) batch mixing: the material prepared is sent into mixer, until mix;
(4) shaping: the raw material China and foreign countries after mixing add water, and amount of water is 5.4% of compound total amount weight percent, wherein the 8 minutes time of batch mixing; Adopt vibrating head to insert vibratory compaction simultaneously.
The index of the mould material of employing prepared by embodiment 1 is:
| Index | Embodiment 1 |
| Scouring index (basicity=2.9) | 7.5 |
| Heat-shock resistance/time (1100 DEG C, water-cooled) | 9 |
Embodiment 2: a kind of RH stove soaking tub mould material, the constitutive material components by weight percentage of this mould material is:
Described water reducer is FAN; Described water reducer, steel fiber and the equal admixture of explosion-proof fiber, the consumption size of admixture is total up to 3.2%.
Specifically, described useless chromium corundum-spinel ramming mass is made up of corundum, aluminum-spinel and chromic oxide, and the weight percent 20% of the aluminum-spinel in chromium corundum-spinel ramming mass that gives up, chromic oxide weight percent 3%; And useless chromium corundum-spinel ramming mass size composition is 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications.
Described corundum is fused white corundum, sub-white corundum and plate diamond spar composition; And corundum size composition be 12 ~ 8mm 15%, 8 ~ 5mm 20%, 5 ~ 3mm 20%, 3 ~ 1mm 15%, 1 ~ 0.5mm 5%, 10% of 0.5 ~ 0.088mm, 15% 7 kind of specification of < 0.088mm; The Al wherein contained in corundum
2o
3weight percent 98.5%.
A preparation method for RH stove soaking tub mould material, is characterized in that comprising the following steps:
(1) system material: chromium corundum-spinel ramming mass is given up after selection and surperficial scarfing cinder process to bulk, Mechanical Crushing is carried out successively again through jaw crusher, oppositely rolling roller crusher, cone crusher, then send into ball mill and carry out fine grinding, again after sieved through sieve, make the classification material that granularity is respectively 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications;
(2) prepare burden: according to the proportion relation of described each constitutive material, useless chromium corundum-spinel ramming mass, corundum, active alpha-aluminium oxide powder, CL370 powder, aluminous cement, water reducer, steel fiber, explosion-proof fiber respectively after configuration process, be prepared into siccative work in-process;
(3) batch mixing: the material prepared is sent into mixer, until mix;
(4) shaping: add water in the raw material after mixing, amount of water is 5.2% of compound total amount weight percent, wherein the 8 minutes time of batch mixing; Adopt vibrating head to insert vibratory compaction simultaneously.
The index of the mould material of employing prepared by embodiment 2 is:
| Index | Embodiment 2 |
| Scouring index (basicity=2.9) | 4.8 |
| Heat-shock resistance/time (1100 DEG C, water-cooled) | 11 |
Scouring index: bar-shaped sample finished product being made 40*40*160, to adopt rotary slag-resistance method that sample is incubated 2 hours in 1650 DEG C of rotary kilns; Lateral dissection sample section, the scouring index of test samples; Each formula needs 3 samples, and averages.
Heat-shock resistance: High Temperature Furnaces Heating Apparatus is preheated to 1100 ± 10 DEG C and after being incubated 15min, rapidly sample is moved in burner hearth, after insulation 20min, rapidly sample is immersed in 5 ~ 35 DEG C of flowing waters, take out immediately after quick refrigeration 3min, be no less than 5min storage period in atmosphere.Then sample is put into stove again, repeat said process, until large crackle appears in sample, till experiment can not be continued, record experiment number.Each formula needs 3 samples, and averages.
Claims (4)
1. a RH stove soaking tub mould material, is characterized in that: the constitutive material components by weight percentage of this mould material is:
Described useless chromium corundum-spinel ramming mass is made up of corundum, aluminum-spinel and chromic oxide, and weight percent >=20% of aluminum-spinel in useless chromium corundum-spinel ramming mass, weight percent >=3% of chromic oxide; And useless chromium corundum-spinel ramming mass size composition is 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications.
2. a kind of RH stove soaking tub mould material according to claim 1, is characterized in that: the corundum in described raw material composition is fused white corundum, sub-white corundum and plate diamond spar composition; And corundum size composition be 12 ~ 8mm 15%, 8 ~ 5mm 20%, 5 ~ 3mm 20%, 3 ~ 1mm 15%, 1 ~ 0.5mm 5%, 10% of 0.5 ~ 0.088mm, 15% 7 kind of specification of < 0.088mm; The Al wherein contained in corundum
2o
3weight percent>=98.5%.
3. a kind of RH stove soaking tub mould material according to claim 1, is characterized in that: described water reducer is the mixing of one or more arbitrary proportions in FDN, ADS and ADW.
4. a preparation method for RH stove soaking tub mould material, is characterized in that comprising the following steps:
(1) system material: chromium corundum-spinel ramming mass is given up after selection and surperficial scarfing cinder process to bulk, Mechanical Crushing is carried out successively again through jaw crusher, oppositely rolling roller crusher, cone crusher, then send into ball mill and carry out fine grinding, again after sieved through sieve, make the classification material that granularity is respectively 12 ~ 8mm, 8 ~ 5mm, 5 ~ 3mm, 3 ~ 1mm, 1 ~ 0.088mm, <0.088mm six kinds of specifications;
(2) prepare burden: according to the proportion relation of described each constitutive material, useless chromium corundum-spinel ramming mass, corundum, active alpha-aluminium oxide powder, CL370 powder, aluminous cement, water reducer, steel fiber, explosion-proof fiber respectively after configuration process, be prepared into siccative work in-process;
(3) batch mixing: the raw material prepared is sent into mixer, until mix;
(4) shaping: add water in the raw material after mixing, amount of water is 3 ~ 7% of compound total amount weight percent, wherein batch mixing time >=5 minutes; Adopt vibrating head to insert vibratory compaction simultaneously.
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| CN201410606979.7A CN104355636B (en) | 2014-10-31 | 2014-10-31 | A kind of RH stove dip pipe castable and preparation method thereof |
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|---|---|---|---|
| CN201410606979.7A CN104355636B (en) | 2014-10-31 | 2014-10-31 | A kind of RH stove dip pipe castable and preparation method thereof |
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| CN104355636A true CN104355636A (en) | 2015-02-18 |
| CN104355636B CN104355636B (en) | 2016-05-11 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110804A (en) * | 2015-08-27 | 2015-12-02 | 宝山钢铁股份有限公司 | Hot-spray-mending material of RH dip pipe and using method of hot-spray-mending material |
| CN106927838A (en) * | 2017-02-17 | 2017-07-07 | 北京兰海金诚耐火材料有限责任公司 | A kind of wear-resisting anti-explosion refractory castable of Stainless-steel fibre |
| CN111362674A (en) * | 2020-03-19 | 2020-07-03 | 上海彭浦特种耐火材料厂有限公司 | Acid-resistant corundum ramming mass and method for manufacturing acid regenerator nozzle by using same |
| CN112661523A (en) * | 2021-01-23 | 2021-04-16 | 江苏锦耐新材料科技有限公司 | Ramming material for steel ladle and preparation method thereof |
| CN113233849A (en) * | 2021-04-26 | 2021-08-10 | 广东泷耀保温材料科技有限公司 | Intelligent phase-change fireproof thermal-insulation mortar |
| CN114480787A (en) * | 2022-01-20 | 2022-05-13 | 鞍山市和丰耐火材料有限公司 | Filling process between impregnated pipes |
| CN115073143A (en) * | 2022-07-22 | 2022-09-20 | 成都府天高温材料科技有限公司 | Forsterite tundish slag blocking wall castable and preparation process thereof |
| CN115636662A (en) * | 2022-11-14 | 2023-01-24 | 北京利尔高温材料股份有限公司 | Chromium carbide-added main channel castable for blast furnace tapping channel and preparation method thereof |
| CN116396062A (en) * | 2023-04-07 | 2023-07-07 | 中钢洛耐科技股份有限公司 | Spinel composite chrome corundum brick for salt-containing wastewater incinerator and preparation method thereof |
| CN117430436A (en) * | 2023-12-20 | 2024-01-23 | 中钢洛耐科技股份有限公司 | Chromium-aluminum-zirconium refractory material for melting layered part of melting separation furnace and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686948A (en) * | 2005-04-08 | 2005-10-26 | 上海彭浦特种耐火材料厂 | Improved type casting material based on bauxite for middle-small type ladle and preparation method |
| CN103274710A (en) * | 2013-06-17 | 2013-09-04 | 武汉钢铁(集团)公司 | Al2o3-Mgo-Cr2o3 casting material for insert tube of RH vacuum furnace |
-
2014
- 2014-10-31 CN CN201410606979.7A patent/CN104355636B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686948A (en) * | 2005-04-08 | 2005-10-26 | 上海彭浦特种耐火材料厂 | Improved type casting material based on bauxite for middle-small type ladle and preparation method |
| CN103274710A (en) * | 2013-06-17 | 2013-09-04 | 武汉钢铁(集团)公司 | Al2o3-Mgo-Cr2o3 casting material for insert tube of RH vacuum furnace |
Non-Patent Citations (1)
| Title |
|---|
| 韩行禄: "《不定形耐火材料（第2版）》", 31 January 2003, 冶金工业出版社 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110804A (en) * | 2015-08-27 | 2015-12-02 | 宝山钢铁股份有限公司 | Hot-spray-mending material of RH dip pipe and using method of hot-spray-mending material |
| CN106927838A (en) * | 2017-02-17 | 2017-07-07 | 北京兰海金诚耐火材料有限责任公司 | A kind of wear-resisting anti-explosion refractory castable of Stainless-steel fibre |
| CN106927838B (en) * | 2017-02-17 | 2020-04-17 | 北京兰海金诚耐火材料有限责任公司 | Steel fiber reinforced wear-resistant explosion-proof castable |
| CN111362674B (en) * | 2020-03-19 | 2022-05-13 | 上海彭浦特种耐火材料厂有限公司 | Acid-resistant corundum ramming mass and method for manufacturing acid regenerator nozzle by using same |
| CN111362674A (en) * | 2020-03-19 | 2020-07-03 | 上海彭浦特种耐火材料厂有限公司 | Acid-resistant corundum ramming mass and method for manufacturing acid regenerator nozzle by using same |
| CN112661523A (en) * | 2021-01-23 | 2021-04-16 | 江苏锦耐新材料科技有限公司 | Ramming material for steel ladle and preparation method thereof |
| CN113233849A (en) * | 2021-04-26 | 2021-08-10 | 广东泷耀保温材料科技有限公司 | Intelligent phase-change fireproof thermal-insulation mortar |
| CN114480787A (en) * | 2022-01-20 | 2022-05-13 | 鞍山市和丰耐火材料有限公司 | Filling process between impregnated pipes |
| CN115073143A (en) * | 2022-07-22 | 2022-09-20 | 成都府天高温材料科技有限公司 | Forsterite tundish slag blocking wall castable and preparation process thereof |
| CN115636662A (en) * | 2022-11-14 | 2023-01-24 | 北京利尔高温材料股份有限公司 | Chromium carbide-added main channel castable for blast furnace tapping channel and preparation method thereof |
| CN116396062A (en) * | 2023-04-07 | 2023-07-07 | 中钢洛耐科技股份有限公司 | Spinel composite chrome corundum brick for salt-containing wastewater incinerator and preparation method thereof |
| CN117430436A (en) * | 2023-12-20 | 2024-01-23 | 中钢洛耐科技股份有限公司 | Chromium-aluminum-zirconium refractory material for melting layered part of melting separation furnace and preparation method and application thereof |
| CN117430436B (en) * | 2023-12-20 | 2024-03-12 | 中钢洛耐科技股份有限公司 | Chromium-aluminum-zirconium refractory material for melting layered part of melting separation furnace and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN104355636B (en) | 2016-05-11 |
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