CN101891485A - Pouring material for steel ladle - Google Patents
Pouring material for steel ladle Download PDFInfo
- Publication number
- CN101891485A CN101891485A CN2009100517322A CN200910051732A CN101891485A CN 101891485 A CN101891485 A CN 101891485A CN 2009100517322 A CN2009100517322 A CN 2009100517322A CN 200910051732 A CN200910051732 A CN 200910051732A CN 101891485 A CN101891485 A CN 101891485A
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- parts
- ladle
- magnesia
- mould material
- slag
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Abstract
The invention discloses a pouring material for a steel ladle. The pouring material consists of the following components in part by weight: 40 to 75 parts of alumina-magnesia spinel (between 25 and 0.074 mm), 10 to 20 parts of alumina fine powder, 3 to 7 parts of magnesia powder of which the magnesia content is over 95 percent, 1 to 5 parts of pure calcium aluminate cement, 0.5 to 1.5 parts of silicon dioxide fine powder, 0.05 to 0.5 part of water reducing agent, 1 to 35 parts of corundum (between 25 and 0.074 mm) and 0.5 to 5 parts of hydrated alumina powder. The pouring material for the steel ladle has the advantages of extremely high molten steel corrosion resistance, slag corrosion resistance, slag penetration resistance, no pollution to molten steel when taken as a refractory material for the liner of a molten steel accommodating container for smelting pure steel, slag bonding resistance and very long service life.
Description
Technical field
The present invention relates to a kind of unshape refractory, relate in particular to a kind of mould material that is used for ladle.
Background technology
The existing inner lining refractory that is used for ladle mainly contains Al2O3MgOC Bricks and mould material, for example: aluminate or alumina-magnesia castable.
The day for announcing is that the Chinese invention patent CN1337376A on February 27th, 2002 discloses a kind of steel ladle casting material, and weight proportion is: fused white corundum 75～95%, electrosmelted magnesite clinker 5～15%, chrome green 1～5%, SiO
21%, pure calcium aluminate cement 1%.
The day for announcing is that the Chinese invention patent CN1640590A on July 20th, 2005 discloses a kind of ladle magnalium matter---fine and close fused corundom mould material, form by A, B, C three parts, wherein the weight % of each component is that 100 weight %: A partly are the uniform mixtures of following each component in the mould material gross weight: fine and close fused corundom, wherein granularity 25mm～10mm accounts for 20%, granularity 10mm～5mm accounts for 17%, granularity 5mm～3mm accounts for 15%, granularity 3mm～0 accounts for 20%, fine and close fused corundom＜0.088mm accounts for 10%, and magnesia 0～0.2mm accounts for 5.2%; B partly be composite additive account for the mould material gross weight 12%; C partly is that the setting accelerator luminite cement accounts for 0.8%.
When smelting Clean Steel, carbonaceous material such as Al2O3MgOC Bricks contain higher carbon, cause molten steel recarburization, thereby pollute molten steel, thereby can not satisfy service requirements.Existing aluminate or alumina-magnesia castable are used to smelt when aluminium killed steel is main ladle and have serious dry slag phenomenon, cause the molten steel loading capacity few and pollute next stove molten steel; Next is along with the molten steel refining processing temperature and the molten steel residence time increase, and the high basicity of part refining treatment slag significantly reduces the work-ing life of aluminate or alumina-magnesia castable ladle liner.
Summary of the invention
Technical problem to be solved by this invention provides a kind of mould material that is used for ladle.Have splendid anti-molten steel and corrode slag corrosion resistance and slag penetration resistance energy.When smelting Clean Steel, do not pollute molten steel when containing the steel in water container inner lining fireproof material, not dry slag, and life-span is quite long.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions:
A kind of mould material that is used for ladle, form by ratio of weight and the number of copies by following component:
(25～0.074mm) 40～75 parts of aluminum-spinels;
10～20 parts of aluminum oxide fine powders;
Content of magnesia is greater than 3～7 parts of 95% magnesia powders;
1～5 part of pure calcium aluminate cement;
0.5～1.5 part of fine silica powder;
0.05～0.5 part of water reducer.
Further,
In technique scheme, its component also comprises (25～0.074mm) 1～35 parts in corundum.
In technique scheme, its component also comprises 0.5～5 part of alumina hydrate powder.
Water reducer described in the present invention is meant under unshape refractory proportioning permanence condition, can reduce the mixing water amount, improve unshape refractory intensity.Can select water reducer general in the industry such as tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 etc. for use, special, be selected from the organic polymer dispersion agent, as the polycarboxylic ethers polymeric superplasticizer FS20 or the FW20 of German BASF Construction Polymers GmbH production.
Described corundum can be a kind of or its mixture in brown corundum, sub-white corundum, white fused alumina and the alundum.
The mould material that is used for ladle of the present invention mainly is made up of aggregate and matrix.Aggregate adopts the aluminum-spinel of granularity at 0.074mm～25mm, compares with corundum, and alkali-resistivity scouring ability is strong, and anti-stick slag is effective.
Matrix adopts aluminum oxide fine powder, content of magnesia greater than 95% magnesia powder.In the high temperature use, aluminum oxide fine powder and content of magnesia form tiny in a large number, active aluminum-spinel greater than 95% magnesia powder reaction, and tiny, active aluminum-spinel material has alkali-resistivity scouring and the strong characteristics of penetrating power.
Also be added into pure calcium aluminate cement, fine silica powder, water reducer in the present invention.
Pure calcium aluminate cement mainly acts on the middle low temperature intensity that provides mould material in the present invention.
It is to reduce mould material to burn the permanent line variation in back that fine silica powder mainly acts in the present invention.
It is the amount of water that reduces mould material that water reducer mainly acts in the present invention, improves the density and the intensity of mould material.
In the present invention, aggregate can also select to add the corundum of granularity at 0.074mm～25mm, and matrix also can select to add alumina hydrate powder.
It is that chemical stability is good that corundum mainly acts in the present invention, and resistance to slag corrosion is good.
Alumina hydrate powder main effect in the present invention is the intensity that improves mould material.
The mould material that is used for ladle of the present invention can adopt conventional preparation method to be prepared, for example take by weighing described various component in proportion after, uniform preparation forms through forcing to mix.
The mould material that is used for ladle of the present invention is compared with containing Al2O3MgOC Bricks, and spinel pouring material of the present invention in use has the advantage of not polluting molten steel and long service life.Compare with the aluminate mould material with alumina-magnesia castable, the working conditions of handling at high basicity slag is longer than aluminate or alumina-magnesia castable following work-ing life; Producing aluminium town steel is under master's the working conditions, has better anti-dry slag effect, has overcome the aluminate of present use or the deficiency that alumina-magnesia castable exists.
As seen, anti-molten steel aggressiveness, resistance to slag corrosion and the slag penetration resistance of the mould material that is used for ladle of the present invention are splendid.Have with material as ladle liner when smelting Clean Steel and do not pollute molten steel, dry slag is few, and quite long characteristics of life-span.
Embodiment
Embodiment 1
Press the described component concentration of table 1, take by weighing each raw material successively, mix evenly, can prepare the mould material that is used for ladle of the present invention through pressure.
Related various components among the present invention are starting material commonly used, can conveniently buy in industrial chemicals market.
Wherein, described aluminum-spinel steps Aluminum company limited available from Kaifeng TeNai Co., Ltd or Qingdao peace, and content of magnesia is greater than 8%, and magnesium oxide and aluminum oxide resultant are greater than 97%.
Described corundum is brown corundum, steps Aluminum company limited available from Kaifeng TeNai Co., Ltd or Qingdao peace, and alumina content is greater than 94%.
Described pure calcium aluminate cement is available from Kai Nuosi (China) aluminate technology company limited.
Described alumina hydrate powder steps Aluminum company limited available from the Qingdao peace.
Embodiment 2
Press the described component concentration of table 1, take by weighing each raw material successively, put into stirrer and force to mix evenly, can prepare the mould material that is used for ladle of the present invention.
Embodiment 3
Press the described component concentration of table 1, take by weighing each raw material successively, mix evenly, can prepare the mould material that is used for ladle of the present invention through pressure.
Embodiment 4
Press the described component concentration of table 1, take by weighing each raw material successively, mix evenly, can prepare the mould material that is used for ladle of the present invention through pressure.
Embodiment 5
Press the described component concentration of table 1, take by weighing each raw material successively, mix evenly, can prepare the mould material that is used for ladle of the present invention through pressure.
Table 1: each component concentration (unit: kilogram) that is used for the mould material of ladle
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Aluminum-spinel (25～0.074mm) | 40 | 75 | 55 | 41 | 74 |
| Aluminum oxide fine powder | 20 | 10 | 15 | 10 | 19 |
| Content of magnesia is greater than 95% magnesia powder | 3 | 7 | 5 | 7 | 3 |
| Pure calcium aluminate cement | 5 | 1 | 3 | 1 | 5 |
| Fine silica powder | 0.5 | 1.5 | 1 | 1.5 | 0.5 |
| Water reducer | 0.5 | 0.05 | 0.3 | 0.1 | 0.4 |
| Corundum (25～0.074mm) | 0 | 0 | 0 | 1 | 35 |
| Alumina hydrate powder | 0 | 0 | 0 | 5 | 0.5 |
With the mould material that is used for ladle of the present invention that embodiment 1～5 is obtained, under 1550 ℃ of temperature, calcine after 3 hours, it to be carried out performance index detect, concrete data see Table 2.
Table 2: the 1550 ℃ of performance perameter tables calcined after burning in 3 hours of mould material that are used for ladle
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Volume density, g/cm 3 | 2.97 | 2.99 | 3.01 | 2.98 | 2.92 |
| Apparent porosity, % | 19 | 18 | 17 | 18 | 20 |
| Compressive strength, MPa | 95 | 100 | 110 | 123 | 86 |
| Folding strength, MPa | 18 | 17 | 23 | 22 | 17 |
| Burn back line velocity of variation, % | +0.4 | +0.35 | +0.15 | +0.2 | +0.45 |
| Resistance to slag corrosion | Very | Excellent | Excellent | Excellent | Excellent |
| Slag penetration resistance | Excellent | Excellent | Excellent | Excellent | Very |
By table 2 data as can be known, present embodiment is through under 1550 ℃ of temperature, calcines that mould material has micro-expansibility after 3 hours, guaranteed that mould material in use keeps the globality of cylinder-packing, has good anti-molten steel and resistance to slag corrosion simultaneously.
The mould material that is used for ladle that the embodiment of the invention 3 is obtained, through using at 300 tons of ladles of Baoshan Iron ﹠ Steel Co., Ltd, average packet reaches 165 times age, and work-ing life is quite long, exceeds the work-ing life of the mould material of existing other ladles far away.
As seen, the mould material that is used for ladle of the present invention has significantly improved work-ing life, has therefore reduced production cost, has saved starting material and labor force.
Undoubtedly, the present invention can also have multiple conversion and remodeling, is not limited to the specific embodiment of above-mentioned embodiment.In a word, protection scope of the present invention should comprise those conspicuous to those skilled in the art conversion or substitute and change shape.
Claims (3)
1. a mould material that is used for ladle is characterized in that, is made up of by ratio of weight and the number of copies following component:
(25～0.074mm) 40～75 parts of aluminum-spinels;
10～20 parts of aluminum oxide fine powders;
Content of magnesia is greater than 3～7 parts of 95% magnesia powders;
1～5 part of pure calcium aluminate cement;
0.5～1.5 part of fine silica powder;
0.05～0.5 part of water reducer.
2. a kind of mould material that is used for ladle as claimed in claim 1 is characterized in that: its component also comprises (25～0.074mm) 1～35 parts in corundum.
3. a kind of mould material that is used for ladle as claimed in claim 1 or 2 is characterized in that: its component also comprises 0.5～5 part of alumina hydrate powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100517322A CN101891485A (en) | 2009-05-21 | 2009-05-21 | Pouring material for steel ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100517322A CN101891485A (en) | 2009-05-21 | 2009-05-21 | Pouring material for steel ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101891485A true CN101891485A (en) | 2010-11-24 |
Family
ID=43100864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100517322A Pending CN101891485A (en) | 2009-05-21 | 2009-05-21 | Pouring material for steel ladle |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161212A (en) * | 2011-01-18 | 2011-08-24 | 北京利尔高温材料股份有限公司 | Method for manufacturing low-cost slag blocking dam |
| CN102276274A (en) * | 2011-07-19 | 2011-12-14 | 中南大学 | Refractory castable for ladle |
| CN102320843A (en) * | 2011-06-24 | 2012-01-18 | 郑州振东耐磨材料有限公司 | Method for producing ladle joint material by utilizing waste corundum bricks |
| CN102672154A (en) * | 2012-04-17 | 2012-09-19 | 莱芜钢铁集团有限公司 | Continuous-casting tundish comprehensive permanent liner and preparation method thereof |
| CN102898168A (en) * | 2012-11-09 | 2013-01-30 | 郑州瑞泰耐火科技有限公司 | Compound magnesium-aluminum-chrome refractory castable for copper smelting tundish |
| CN103373855A (en) * | 2012-04-25 | 2013-10-30 | 宝山钢铁股份有限公司 | Regenerative steel ladle repair material |
| CN104211420A (en) * | 2014-09-15 | 2014-12-17 | 武汉科技大学 | Light-weight aluminum-magnesium casting material and preparation method thereof |
| CN104250099A (en) * | 2013-06-25 | 2014-12-31 | 上海宝钢工业技术服务有限公司 | Al2O3-MgO refractory castable and preparation method thereof |
| CN104446527A (en) * | 2014-10-27 | 2015-03-25 | 朱小英 | Permanent lining ramming material for steel ladle |
| CN104944990A (en) * | 2015-07-02 | 2015-09-30 | 张婷 | Casting material |
| CN106830958A (en) * | 2017-03-21 | 2017-06-13 | 北京兰海金诚耐火材料有限责任公司 | A kind of low aluminum heat conduction Alkali resistant castable refractory |
| CN107098711A (en) * | 2017-05-25 | 2017-08-29 | 嘉兴新耐建材有限公司 | A kind of Ferrous Metallurgy refractory material |
| CN107540396A (en) * | 2017-08-11 | 2018-01-05 | 河南华西耐火材料有限公司 | A kind of castable suitable for fluidized bed furnace furnace bottom |
| CN108083782A (en) * | 2017-11-22 | 2018-05-29 | 武汉钢铁集团耐火材料有限责任公司 | Ladle integral pouring working lining castable |
| CN109133953A (en) * | 2018-10-26 | 2019-01-04 | 山西同创科技股份有限公司 | Method is built by laying in a kind of quick spray repair of carbon-free ladle liner |
| CN109704792A (en) * | 2019-01-08 | 2019-05-03 | 山东钢铁股份有限公司 | Method for manufacturing the castable of burnt tank liner and for manufacturing burnt tank liner |
| CN111348901A (en) * | 2020-03-17 | 2020-06-30 | 李向威 | Steel ladle castable taking bauxite-based homogenized material as matrix |
| CN111995417A (en) * | 2020-08-21 | 2020-11-27 | 浙江锦诚新材料股份有限公司 | Magnesium aluminate spinel castable for aluminum melting furnace |
| CN113135765A (en) * | 2021-05-10 | 2021-07-20 | 辽宁科技大学 | Spinel-periclase castable for electric furnace doors and preparation method thereof |
| CN116514527A (en) * | 2023-05-19 | 2023-08-01 | 洛阳利尔功能材料有限公司 | Method for preparing tundish retaining wall by using reclaimed materials |
-
2009
- 2009-05-21 CN CN2009100517322A patent/CN101891485A/en active Pending
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161212B (en) * | 2011-01-18 | 2013-06-05 | 北京利尔高温材料股份有限公司 | Method for manufacturing low-cost slag blocking dam |
| CN102161212A (en) * | 2011-01-18 | 2011-08-24 | 北京利尔高温材料股份有限公司 | Method for manufacturing low-cost slag blocking dam |
| CN102320843A (en) * | 2011-06-24 | 2012-01-18 | 郑州振东耐磨材料有限公司 | Method for producing ladle joint material by utilizing waste corundum bricks |
| CN102276274A (en) * | 2011-07-19 | 2011-12-14 | 中南大学 | Refractory castable for ladle |
| CN102672154A (en) * | 2012-04-17 | 2012-09-19 | 莱芜钢铁集团有限公司 | Continuous-casting tundish comprehensive permanent liner and preparation method thereof |
| CN102672154B (en) * | 2012-04-17 | 2014-01-15 | 莱芜钢铁集团有限公司 | Continuous-casting tundish comprehensive permanent liner and preparation method thereof |
| CN103373855B (en) * | 2012-04-25 | 2015-06-17 | 宝山钢铁股份有限公司 | Regenerative steel ladle repair material |
| CN103373855A (en) * | 2012-04-25 | 2013-10-30 | 宝山钢铁股份有限公司 | Regenerative steel ladle repair material |
| CN102898168A (en) * | 2012-11-09 | 2013-01-30 | 郑州瑞泰耐火科技有限公司 | Compound magnesium-aluminum-chrome refractory castable for copper smelting tundish |
| CN102898168B (en) * | 2012-11-09 | 2014-07-09 | 郑州瑞泰耐火科技有限公司 | Compound magnesium-aluminum-chrome refractory castable for copper smelting tundish |
| CN104250099B (en) * | 2013-06-25 | 2018-07-20 | 上海宝钢工业技术服务有限公司 | Al2O3- MgO refractory casting materials and preparation method thereof |
| CN104250099A (en) * | 2013-06-25 | 2014-12-31 | 上海宝钢工业技术服务有限公司 | Al2O3-MgO refractory castable and preparation method thereof |
| CN104211420B (en) * | 2014-09-15 | 2016-02-10 | 武汉科技大学 | A kind of light weight alumina-magnesia castable and preparation method thereof |
| CN104211420A (en) * | 2014-09-15 | 2014-12-17 | 武汉科技大学 | Light-weight aluminum-magnesium casting material and preparation method thereof |
| CN104446527A (en) * | 2014-10-27 | 2015-03-25 | 朱小英 | Permanent lining ramming material for steel ladle |
| CN104446527B (en) * | 2014-10-27 | 2016-07-20 | 朱小英 | A kind of ladle permanent lining ramming mass |
| CN104944990A (en) * | 2015-07-02 | 2015-09-30 | 张婷 | Casting material |
| CN106830958B (en) * | 2017-03-21 | 2020-04-17 | 北京兰海金诚耐火材料有限责任公司 | Low-aluminum low-heat-conduction alkali-resistant castable |
| CN106830958A (en) * | 2017-03-21 | 2017-06-13 | 北京兰海金诚耐火材料有限责任公司 | A kind of low aluminum heat conduction Alkali resistant castable refractory |
| CN107098711A (en) * | 2017-05-25 | 2017-08-29 | 嘉兴新耐建材有限公司 | A kind of Ferrous Metallurgy refractory material |
| CN107540396A (en) * | 2017-08-11 | 2018-01-05 | 河南华西耐火材料有限公司 | A kind of castable suitable for fluidized bed furnace furnace bottom |
| CN108083782A (en) * | 2017-11-22 | 2018-05-29 | 武汉钢铁集团耐火材料有限责任公司 | Ladle integral pouring working lining castable |
| CN109133953A (en) * | 2018-10-26 | 2019-01-04 | 山西同创科技股份有限公司 | Method is built by laying in a kind of quick spray repair of carbon-free ladle liner |
| CN109704792A (en) * | 2019-01-08 | 2019-05-03 | 山东钢铁股份有限公司 | Method for manufacturing the castable of burnt tank liner and for manufacturing burnt tank liner |
| CN109704792B (en) * | 2019-01-08 | 2021-08-27 | 山东钢铁股份有限公司 | Casting material for producing coke drum linings and method for producing coke drum linings |
| CN111348901A (en) * | 2020-03-17 | 2020-06-30 | 李向威 | Steel ladle castable taking bauxite-based homogenized material as matrix |
| CN111995417A (en) * | 2020-08-21 | 2020-11-27 | 浙江锦诚新材料股份有限公司 | Magnesium aluminate spinel castable for aluminum melting furnace |
| CN113135765A (en) * | 2021-05-10 | 2021-07-20 | 辽宁科技大学 | Spinel-periclase castable for electric furnace doors and preparation method thereof |
| CN116514527A (en) * | 2023-05-19 | 2023-08-01 | 洛阳利尔功能材料有限公司 | Method for preparing tundish retaining wall by using reclaimed materials |
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Application publication date: 20101124 |