CN101468899A - Casting material for integral torpedo hot metal mixer car splash guard - Google Patents
Casting material for integral torpedo hot metal mixer car splash guard Download PDFInfo
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- CN101468899A CN101468899A CNA2007101729911A CN200710172991A CN101468899A CN 101468899 A CN101468899 A CN 101468899A CN A2007101729911 A CNA2007101729911 A CN A2007101729911A CN 200710172991 A CN200710172991 A CN 200710172991A CN 101468899 A CN101468899 A CN 101468899A
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- splash guard
- mould material
- hot metal
- mixer car
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Abstract
The invention relates to steel smelting equipment, in particular to a molten iron mixing trolley for preprocessing molten iron in iron-making production, specifically a casting material for manufacturing a splash guard of the molten iron mixing trolley. The casting material for manufacturing the splash guard of the molten iron mixing trolley adopts an Al2O3-SiC-C series carbon casting material with low aluminate cement and silicon carbide, and comprises the following components by weight percentage: 15 to 20 percent of the silicon carbide, 4 to 5 percent of pure aluminate cement, 2 to 3 percent of graphite powder, 3 to 4 percent of Al2O3 superfine micro powder and silicon micro powder, 1.5 to 2 percent of steel fiber, 0.5 to 1 percent of metal micro powder and organic fiber, 0.1 to 0.15 percent of trimer (Na5P3O10), and the balance being aggregate, wherein the aggregate consists of 70 percent of reclaimed material of used blast furnace iron runner ramming mass and 30 percent of alumina grains. The casting material for manufacturing the splash guard of the molten iron mixing trolley has the advantages of stable product quality, long service life and low raw material cost, and is favorable for reutilization of waste resources.
Description
Technical field
The present invention relates to steel smelting equipment, refer in particular in the ironmaking production molten iron is carried out pretreated mixed iron equipment, specifically refer to improvement the mould material of making torpedo hot metal mixer car splash guard.
Background technology
When molten iron carries out dephosphorization, desulfurization, desiliconization etc. three and takes off pre-treatment in metal mixer car, vigorous reaction can take place in various pulvis that add and molten iron in metal mixer car, the molten iron that splashes outside tap hole of iron-mixing bogie can cause badly damaged to metal mixer car itself and whole piece hot metal pretreatment assembly line equipment.Torpedo hot metal mixer car splash guard is a kind of protector that can guarantee metal mixer car and hot metal pretreatment system device safety.After tap hole of iron-mixing bogie is installed splash guard, can effectively suppress splashing of molten iron, protection metal mixer car and hot metal pretreatment assembly line equipment are not damaged.Torpedo hot metal mixer car splash guard is generally made cover body by steel construction, has round shape to insert mouth in cover body central authorities, and the upper edge of insertion mouth and lower edge and inwall all are lined with the layer of anti-the material.
In the prior art, when making splash guard, the siliceous mould material of aluminium-carbonization is adopted on the upper and lower edge of described insertion mouth, and tubular is inserted a mouthful inner block the aluminium carbon brick, and adopts on-the-spot brick mode to construct.Cast-brick the mode of employing has a lot of shortcomings.The nearest integrated poured technology of the employing that the proposes novel method of making torpedo hot metal mixer car splash guard can overcome many shortcomings of cast-brick mode.But as still use original high alumina castable to be difficult to reach effect preferably.
High alumina castable originally is to be main by brown corundum, is equipped with compositions such as wedding agent, toughener, dispersion agent again, but is difficult to adapt to the service requirements of product from service condition.Main drawback has: (1) normal temperature height, warm intensity are lower; (2) workability is bad, and is mobile relatively poor; When (3) using and the easiest being etched in junction of brick, influence work-ing life; (4) unstable product quality, the dross phenomenon is more serious, because scum is more serious to the erosion of product, localized delamination often occurs, even has had influence on steel construction; (5) production efficiency of mould material is low, and material cost is higher.
Summary of the invention
The objective of the invention is to propose a kind of new mould material that is used for integral torpedo hot metal mixer car splash guard,, overcome the deficiencies in the prior art to adapt to the construction of integrated poured torpedo hot metal mixer car splash guard.
A kind of mould material that is used for integrated poured torpedo hot metal mixer car splash guard of the present invention adopts a kind of Al
2O
3The low cement aluminium silicon carbide carbonaceous mould material of-SiC-C series by percentage to the quality, wherein contains:
Silicon carbide 15～20%;
Fine aluminium acid salt cement 4～5%;
Graphite Powder 99 2～3%;
Al
2O
3Ultra-fine micropowder and silicon powder 3～4%;
Steel fiber 1.5～2%;
Metal fine powder and organic fibre 0.5～1%.
Trimerization (Na
5P
3O
10) 0.1～0.15%;
All the other are aggregate, and described aggregate is to be made up of the reclaimed materials and 30% alumina particle of 70% usefulness back blast furnace iron runner ramming mass.
Described granularity is 1-8mm with afterwards the blast furnace iron runner ramming mass is in the reclaimed materials that processing obtains, and carborundum content is at 5-10%, and the effective constituent of aluminum oxide is more than 70%, and water-intake rate is below 3%; Alumina requires to select for use high-quality high grade bauxite, Al
2O
3Content is more than 85%, basic metal and Fe
2O
3Content all is lower than 1.5%.Particle shape has good moistening, with the cement excellent bonding performance near circular.
Silicon carbide micro-powder is an antioxidant, and wherein the effective constituent of SiC is selected the following carborundum powder of particle diameter 1mm for use more than 90%, because its moistening is relatively poor, the clay that needs to add 1-2% improves its performance, and improves the intensity of mould material.
Graphite Powder 99 is an anti-erosion agent, with the anti-molten iron that improves material wash away, erosion performance.
Described Al
2O
3Ultra-fine micropowder and silicon powder are wedding agent, and the adding of micro mist can significantly improve the high-temperature behavior and the workability of mould material; Wherein the specific surface area of alumina powder is not less than 8m
2/ g, solvable alkali＜0.08%; Carbon %＜0.5 in the silicon powder, specific surface area is not less than 20m
2/ g, PH6.9.
Steel fiber, metal fine powder and organic fibre are toughener, and organic fibre adopts Xylo-Mucine, add steel fiber, metal fine powder and Xylo-Mucine, can improve the intensity and the anti-spalling of material.
With Lafarge 71 pure calcium aluminate cements is wedding agent.
Trimerization (Na
5P
3O
10) be the most frequently used a kind of in the polyphosphoric acid salt, can reduce the content of water in the mould material matrix as dispersion agent, improve the physicals of mould material.
With small powder phosphoric acid salt dispersion agent, metal fine powder and the pre-mixing of organic fibre toughener, put into stirrer together with above other compositions again and stir earlier, can obtain novel mould material of the present invention.
Owing to adopted new starting material and proportioning, produce integrated poured torpedo hot metal mixer car splash guard with mould material of the present invention, have the following advantages:
1, can effectively reduce other aggregates of various level because the quality change of the mould material that particle segregation causes, constant product quality;
2, structural integrity preferably can be kept in the use, the erosion of dross phenomenon and scum can be effectively reduced, long service life;
3, the discarded resource that reclaims has been carried out regeneration, cost saves material.
Embodiment
Now the invention will be further described in conjunction with some embodiment.
Its composition of embodiment 1-3 sees Table 1.
Table 1
| Composition | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Aggregate | 70.47 | 68.32 | 68.3 |
| Silicon carbide | 16.3 | 18.5 | 19.1 |
| Graphite Powder 99 | 2.3 | 2.58 | 2.94 |
| The fine aluminium acid salt cement | 4.8 | 4.5 | 4.1 |
| Al 2O 3Micro mist and silicon powder | 3.48 | 3.95 | 3.21 |
| Metal fine powder and organic fibre | 0.5 | 1.0 | 0.7 |
| Steel fiber | 2 | 1 | 1.5 |
| Trimerization (Na 5P 3O 10) | 0.15 | 0.15 | 0.15 |
Table 2 has provided the contrast of the physical and chemical index of the present invention and former splash guard mould material, and visible main physical and chemical index of the present invention has all surpassed the level of former mould material.
Table 2
Produce integrated poured torpedo hot metal mixer car splash guard, stable physical-chemical indexes, good quality of product with mould material of the present invention.
Mould material of the present invention has good construction performance.The amplitude broad of the amount of water that the time can bear in cast can not cause overdrying when amount of water reaches 5-8% and hardens too soon, also can not cause wet and loses denseness, good flowing properties; Can simplify production process, shorten the engineering time, enhance productivity.Place after several days after the once shaped and get final product deliver goods.
Produce splash guard with mould material of the present invention, the anti-material intensity of liner height, long service life: no matter under normal temperature still was the condition of high temperature, the anti-material intensity of liner was all very high, can reach 2MPa at 1500 ℃ high temperature break resistant intensities, referring to table 2.The good resistance molten iron of mould material corrodes and performance of flushing has been protected steel construction well, so dross is fewer, does not have distortion.Compare with using former mould material, the use heat of product obviously is better than original product.
Owing to make full use of waste resistant material, both helped the comprehensive utilization of resource, reduce discharging wastes, reduced cost again.
Claims (5)
1. a mould material that is used for integrated poured torpedo hot metal mixer car splash guard adopts a kind of Al
2O
3The low cement aluminium silicon carbide carbonaceous mould material of-SiC-C series is characterized in that wherein containing by percentage to the quality:
Silicon carbide 15～20%;
Fine aluminium acid salt cement 4～5%;
Graphite Powder 99 2～3%;
Al
2O
3Ultra-fine micropowder and silicon powder 3～4%;
Steel fiber 1.5～2%;
Metal fine powder and organic fibre 0.5～1%;
Trimerization (Na
5P
3O
10) 0.1～0.15%;
All the other are aggregate, and described aggregate is to be made up of the reclaimed materials and 30% alumina particle of 70% usefulness back blast furnace iron runner ramming mass.
2. the mould material that is used for integral torpedo hot metal mixer car splash guard according to claim 1, it is characterized in that: described reclaimed materials with back blast furnace iron runner ramming mass, granularity is 1-8mm, carborundum content is 5-10%, the effective constituent of aluminum oxide is more than 70%, and water-intake rate is below 3%; Alumina is selected high-quality high grade bauxite, Al for use
2O
3Content is more than 85%, basic metal and Fe
2O
3Content all is lower than 1.5%, and particle has good moistening, with the cement excellent bonding performance near circular.
3. the mould material that is used for integral torpedo hot metal mixer car splash guard according to claim 1 is characterized in that: described silicon carbide is antioxidant, selects for use below the particle diameter 1mm, and the effective constituent of its SiC is more than 90%.
4. the mould material that is used for integral torpedo hot metal mixer car splash guard according to claim 1 is characterized in that: described Al
2O
3Ultra-fine micropowder and silicon powder are wedding agent, and the adding of micro mist can significantly improve the high-temperature behavior and the workability of mould material; Wherein the specific surface area of alumina powder is not less than 8m
2/ g, solvable alkali＜0.08%; Carbon %＜0.5 in the silicon powder, specific surface area is not less than 20m
2/ g, PH6.9.
5. the mould material that is used for integral torpedo hot metal mixer car splash guard according to claim 1 is characterized in that: trimerization (Na
5P
3O
10) be dispersion agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101729911A CN101468899A (en) | 2007-12-25 | 2007-12-25 | Casting material for integral torpedo hot metal mixer car splash guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101729911A CN101468899A (en) | 2007-12-25 | 2007-12-25 | Casting material for integral torpedo hot metal mixer car splash guard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101468899A true CN101468899A (en) | 2009-07-01 |
Family
ID=40826742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101729911A Pending CN101468899A (en) | 2007-12-25 | 2007-12-25 | Casting material for integral torpedo hot metal mixer car splash guard |
Country Status (1)
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|---|---|
| CN (1) | CN101468899A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993230A (en) * | 2010-09-14 | 2011-03-30 | 浙江锦诚耐火材料有限公司 | Coal injection pipe prefabricated member recipe |
| CN103232195A (en) * | 2013-04-18 | 2013-08-07 | 无锡远能耐火材料有限公司 | High-strength alkali-penetration-resistant plastic casting material and preparation method thereof |
| CN107954730A (en) * | 2017-12-11 | 2018-04-24 | 攀枝花钢城集团有限公司 | Intermediate frequency furnace converter nose dry type ramming material and preparation method thereof |
| CN108947502A (en) * | 2018-08-23 | 2018-12-07 | 江苏江能新材料科技有限公司 | A kind of ramming mass and preparation method thereof for iron tap channel |
| CN109180167A (en) * | 2018-08-23 | 2019-01-11 | 江苏江能新材料科技有限公司 | A kind of ferronickel furnace iron tap channel special environment protection ramming mass and preparation method thereof |
| CN115946226A (en) * | 2022-12-16 | 2023-04-11 | 郑州润立得新材料科技有限公司 | Pouring method and pouring material of protection plate for ladle turner |
-
2007
- 2007-12-25 CN CNA2007101729911A patent/CN101468899A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993230A (en) * | 2010-09-14 | 2011-03-30 | 浙江锦诚耐火材料有限公司 | Coal injection pipe prefabricated member recipe |
| CN101993230B (en) * | 2010-09-14 | 2012-11-28 | 浙江锦诚耐火材料有限公司 | Coal injection pipe prefabricated member recipe |
| CN103232195A (en) * | 2013-04-18 | 2013-08-07 | 无锡远能耐火材料有限公司 | High-strength alkali-penetration-resistant plastic casting material and preparation method thereof |
| CN103232195B (en) * | 2013-04-18 | 2015-01-14 | 无锡远能耐火材料有限公司 | High-strength alkali-penetration-resistant plastic casting material and preparation method thereof |
| CN107954730A (en) * | 2017-12-11 | 2018-04-24 | 攀枝花钢城集团有限公司 | Intermediate frequency furnace converter nose dry type ramming material and preparation method thereof |
| CN108947502A (en) * | 2018-08-23 | 2018-12-07 | 江苏江能新材料科技有限公司 | A kind of ramming mass and preparation method thereof for iron tap channel |
| CN109180167A (en) * | 2018-08-23 | 2019-01-11 | 江苏江能新材料科技有限公司 | A kind of ferronickel furnace iron tap channel special environment protection ramming mass and preparation method thereof |
| CN115946226A (en) * | 2022-12-16 | 2023-04-11 | 郑州润立得新材料科技有限公司 | Pouring method and pouring material of protection plate for ladle turner |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090701 |