CN1090560A - Cement-free mullite composite pouring material - Google Patents
Cement-free mullite composite pouring material Download PDFInfo
- Publication number
- CN1090560A CN1090560A CN 93101587 CN93101587A CN1090560A CN 1090560 A CN1090560 A CN 1090560A CN 93101587 CN93101587 CN 93101587 CN 93101587 A CN93101587 A CN 93101587A CN 1090560 A CN1090560 A CN 1090560A
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- CN
- China
- Prior art keywords
- cement
- refractory castable
- oxide
- pouring material
- composite pouring
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Abstract
The product that reaches of the present invention is another the novel refractory castable after low cement and ultra-low cement refractory castable, it is main aggregate with mullite and an amount of zirconium material and chromia material, do not contain cement in it, can obviously improve the high-temperature behavior and the fire performance of product, and then make institute's building structure stand severe more cruel environment for use.
Description
The present invention relates to a kind of manufacture craft of amorphous refractory
Traditional refractory castable is generally with the bond material of high-alumina cement as refractory aggregate, itself and water are mixed and be cast in mould among harden, just can build into multiple resistivity against fire structure.But be unwell to the refractory products that traditional refractory castable builds up and resembling and molten iron, use in the very severe cruel environment that molten steel etc. directly contact, this is because the refractoriness of bond material high-alumina cement is low, the use properties of solidity to corrosion and product is also in recent years relatively poor, appearance along with fine powder and ultrafine powder, low cement mo(u)ld (including cement amount 4～7%) and ultra-low cement type (including cement amount 1～4%) refractory castable have been developed in this area in succession, because their compactness is higher, so make thermotolerance and solidity to corrosion be able to bigger raising, and can in severe cruel environment, use by its structure that builds up.But low cement mo(u)ld and ultra-low cement type refractory castable still are the inner refractory castable that contains cement, because contain combination water in the cement, the time that material need toast is long, it is very slow to harden, cause the preserving period of refractory castable goods longer, so also just made the production cycle of equipment prolong.In addition, lime in the cement (CaO) composition can form eutectic mixture with the major ingredient in the basic refractory castable material, the appearance of these eutectic mixtures will greatly have influence on the high-temperature behavior and the fire performance of material, especially high temperature break resistant intensity, make that shortening dramatically another defective that prior art also exists in work-ing life with its fire resisting construction that builds up is: since the cement composition in the material transport and storage process in the aquation that is easy to make moist lost efficacy, this has not only reduced the multinomial using property data of refractory castable, and can cause suitable financial loss to the user.
The objective of the invention is to develop a kind of advanced composite material refractory castable that has improved aggregate proportioning and manufacture craft, and then overcome existing defective in aforementioned all prior aries, every using property data of refractory castable is further improved.
Refractory castable provided by the present invention can be considered to another the novel refractory castable-cement-free mullite composite pouring material after low cement mo(u)ld and ultra-low cement type refractory castable.It is with mullite (3Al
2O
32SiO
2) and an amount of zirconium material and chromia material be main aggregate, its inner Chemical Composition (weight) comprises
Aluminum oxide (Al
2O
3) 63.6～70.5%
Silicon oxide (SiO
2) 23.0～29.5%
Zirconium white (ZrO
2) 5.0～8.0%
Chromic oxide (Cr
2O
3) 0.9～1.0%
Calcium oxide (CaO)＜0.2%
Titanium oxide (TiO
2)＜0.1%
Ferric oxide (Fe
2O
3)＜0.1%
And micro-compound rare-earth.
An important feature of the present invention be exactly this with mullite etc. for not containing cement (in general casting industry classification, CaO content being referred to as the non-cement refractory castable less than 0.2% refractory castable) in the composite pouring material of main aggregate, product just can toast use after demoulding like this, neither need to strengthen its low temperature intensity by maintenance, the high-temperature behavior and the fire performance of product have obviously been improved again, make it in the process of storing and transporting, can not be subjected to the influence of natural environment and climate, so also just prolonged the work-ing life of product, improve the economic benefit of product and in refractory castable, mixed the wettability that micro-compound rare-earth will help to reduce material and metal liquid, improved the microtexture of material.
Mullite is Al
2O
3-SiO
2Unique stable compound in the system, its fusing point is higher, and hardness is big, and the high temperature creep value is little, and resistance to chemical corrosion is good, but the tendency that generates thick uneven crystalline particle, promptly so-called inhomogeneity are also arranged.This inhomogeneity shows that the apparent porosity of finished product is higher, and deflection phenomenon is serious, has some adverse influences for the use properties of material.The basic skills that solves this class inhomogeneity is to insert a certain amount of mineral superfine powder wedding agent and other trace mineral supplement in the refractory castable of made.Contain the ultrafine powder close with the aggregate Chemical Composition of at least 12% weight at refractory castable of the present invention, the granularity of ultrafine powder is between 0～10A.During making, at first with requirement weighing and preliminary mix of aggregate by prescription, the slurry of making as solvent with low activity water that contains ultrafine powder and dispersion agent etc. is added in the aggregate after just mixing by the amount of prescription requirements afterwards again, carry out carefully mixedly, the material after mixing can drop into construction.Because ultrafine powder has under very low water function with regard to the abundant dispersive characteristic of energy, therefore after adding pug, ultrafine powder forms the very thin lubricant film of one deck on the particles of aggregates surface, the flowability and the tamped density of refractory castable had so both been improved, reduced pug moisture not only but also discharge owing to moisture is in use necessary, thereby also just shortened the baking cycle of this kind product, improved baking speed, and reduced apparent porosity significantly, thereby also improved the penetrating power of the anti-slag/liquid metal of material, made refractory castable can stand severe more cruel working conditions.
Following table has been listed the physical and chemical index of low cement refractory castable, ultra-low cement refractory castable and cement-free mullite composite pouring material respectively, can find out that the latter's apparent porosity, compressive strength and volume density all obviously are better than prior art products from table.
| Low cement | Ultra-low cement | Non-cement | |
| Apparent porosity (%) | 17～20 | 15～17.5 | 12～15 |
| Compressive strength kg/cm 2(1450 ℃ * 3 hours) | 462 | 538 | ＞600 |
| Volume density | 2.5 | 2.5 | ＞2.6 |
| Refractoriness | ＞1750℃ | ＞1750℃ | ＞1750℃ |
Claims (2)
1, a kind of composite pouring material is characterized in that being the refractory castable of main aggregate with mullite etc. that the Chemical Composition of this refractory castable (weight) comprises
Aluminum oxide (Al
2O
3) 63.6～70.5%
Silicon oxide (SiO
2) 23.0～29.0%
Zirconium white (ZrO
2) 5.0～8.0%
Chromic oxide (Cr
2O
3) 0.9～1.0%
Calcium oxide (CaO)＜0.2%
Titanium oxide (TiO
2)＜0.1%
Ferric oxide (Fe
2O
3)＜0.1%
And micro-compound rare-earth.
2, composite pouring material as claimed in claim 1 is characterized in that refractory castable contains the ultrafine powder close with the aggregate Chemical Composition of at least 12% weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93101587A CN1044800C (en) | 1993-02-02 | 1993-02-02 | Cement-free mullite composite pouring material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93101587A CN1044800C (en) | 1993-02-02 | 1993-02-02 | Cement-free mullite composite pouring material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1090560A true CN1090560A (en) | 1994-08-10 |
| CN1044800C CN1044800C (en) | 1999-08-25 |
Family
ID=4983661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93101587A Expired - Fee Related CN1044800C (en) | 1993-02-02 | 1993-02-02 | Cement-free mullite composite pouring material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044800C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061015C (en) * | 1998-09-28 | 2001-01-24 | 宝山钢铁(集团)公司 | Ultra-low cement deposit material for tap hole of iron-mixing bogie |
| CN1072626C (en) * | 1998-08-10 | 2001-10-10 | 刘少先 | Light mullite pouring material |
| CN103496992A (en) * | 2013-09-22 | 2014-01-08 | 郑州亨瑞达新材料有限公司 | Chromium zirconium mullite refractory material and preparation method thereof |
| CN103496994A (en) * | 2013-09-23 | 2014-01-08 | 宜兴市张泽浇注耐火材料有限公司 | Acid-resisting alkali-resisting refractory castable for garbage incinerator |
| CN108637231A (en) * | 2018-07-30 | 2018-10-12 | 广东中天创展球铁有限公司 | A kind of spheroidising ladle and its manufacture craft |
| CN108752019A (en) * | 2018-05-16 | 2018-11-06 | 常熟市红洲模具有限公司 | A kind of ladle ultra-low cement deposit material |
| CN113105253A (en) * | 2021-03-26 | 2021-07-13 | 江苏永钢集团有限公司 | Zirconium-silicon-chromium-based ladle drainage sand and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812580B (en) * | 2010-03-31 | 2011-11-02 | 马鞍山钢铁股份有限公司 | Roll collar of furnace roller of roller hearth heating furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3507876A1 (en) * | 1985-03-06 | 1986-09-11 | Didier-Werke Ag, 6200 Wiesbaden | USE OF CEMENT-FREE VIBRATION MATERIALS BASED ON ALUMINUM OXIDE AND / OR ZIRCONIUM DIOXIDE FOR THE PRODUCTION OF WEARING PARTS |
-
1993
- 1993-02-02 CN CN93101587A patent/CN1044800C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072626C (en) * | 1998-08-10 | 2001-10-10 | 刘少先 | Light mullite pouring material |
| CN1061015C (en) * | 1998-09-28 | 2001-01-24 | 宝山钢铁(集团)公司 | Ultra-low cement deposit material for tap hole of iron-mixing bogie |
| CN103496992A (en) * | 2013-09-22 | 2014-01-08 | 郑州亨瑞达新材料有限公司 | Chromium zirconium mullite refractory material and preparation method thereof |
| CN103496992B (en) * | 2013-09-22 | 2015-04-01 | 郑州亨瑞达新材料有限公司 | Chromium zirconium mullite refractory material and preparation method thereof |
| CN103496994A (en) * | 2013-09-23 | 2014-01-08 | 宜兴市张泽浇注耐火材料有限公司 | Acid-resisting alkali-resisting refractory castable for garbage incinerator |
| CN108752019A (en) * | 2018-05-16 | 2018-11-06 | 常熟市红洲模具有限公司 | A kind of ladle ultra-low cement deposit material |
| CN108637231A (en) * | 2018-07-30 | 2018-10-12 | 广东中天创展球铁有限公司 | A kind of spheroidising ladle and its manufacture craft |
| CN108637231B (en) * | 2018-07-30 | 2023-09-12 | 广东中天创展球铁有限公司 | Ladle for spheroidizing and manufacturing process thereof |
| CN113105253A (en) * | 2021-03-26 | 2021-07-13 | 江苏永钢集团有限公司 | Zirconium-silicon-chromium-based ladle drainage sand and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044800C (en) | 1999-08-25 |
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