CN1104191A - Cement-less self-flow corundum composite casting material - Google Patents
Cement-less self-flow corundum composite casting material Download PDFInfo
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- CN1104191A CN1104191A CN 93121050 CN93121050A CN1104191A CN 1104191 A CN1104191 A CN 1104191A CN 93121050 CN93121050 CN 93121050 CN 93121050 A CN93121050 A CN 93121050A CN 1104191 A CN1104191 A CN 1104191A
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Abstract
The present invention relates to a cementless gravity corundum composite casting material. It uses electro-melting corundum, spinel, zirconia material and some other oxides (including composite rare earth) as main raw materials and doesn't contain cement, and has no need of vibration ramming in the course of construction , and has a high gravity property and filled density, short hardening time, low porosity and very high low-temp. and high-temp. strength. Said casting material is quick in roasting speed, short in completion and commissioning period and long in service life, and the properties of said product, in particular, resistance to heat shocks and oxidation resistance are good.
Description
The present invention relates to a kind of unsetting refractory castable and manufacture craft thereof.
Mould material is to produce and most popular a kind of unshape refractory at present, is mainly used in whole structures such as constructing oven inner liner, and its fine quality also can be used for smelting furnace.Progress and raising along with scientific and technological level, the composite casting material products develops into present low cement fused corundom mould material and ultra-low cement fused corundom mould material by common mould material, high-alumina cement mould material, during each evolution all make the performance of material that improvement has in various degree been arranged.But up to now, above-mentioned all kinds of corundum composite casting materials all have two important defectives, the result also makes the integrated performance index of mould material finished product reduce significantly, one of said defective is that existing all kinds of mould material all is the inner mould material that contains cement, because (crystal water all is difficult to emptying in whole use to contain crystal water in the cement, will make material form the heterogeneity structure like this), slow and the easy damp failure of hydration rate, cause the time long and the material require baking preserving period of mould material goods long, so also just made the production cycle of equipment prolong; In addition, lime in the cement (CaO) composition at high temperature is easy to react with other material and generate eutectic, the generation of eutectic has reduced the high-temperature behavior of refractory castable, and feasible work-ing life and economic target with its fire resisting construction of constructing descends.Another defective of existing in prior technology comes from the form of construction work of forming materials, promptly prolong the molding construction mode of attacking habitual cast/vibration for many years, because this form of construction work must be operated by the people (because the steam circle of vibrating head is very limited, this can not often take out from material with regard to requiring vibrating head to be moved continually), because its working hour is long, labour intensity is high, operating noise is big, make the people be easy to produce fatigue, therefore say that it is a kind of very tedious work.As a kind of mode of increasing work efficiency, also often adopt in the working-yard in the vibration ramming mass and increase the way of mixing the water yield, particularly all the more so when constructed in complex-shaped or very thin position, but the increase of moisture inevitable just make the apparent porosity increase of mould material and the increase of storing time and production cycle (because moisture must be discharged).In order to overcome above defective and to adapt to the strict demand of high-quality product to refractory castable, low cement and ultra-low cement self-flow corundum mould material have abroad appearred in recent years in succession, these material are feature with its mixed flowability, need not to apply external force in moulding process can flow and outgas, although the unfavorable factor in some constructions has in the past been eliminated in the appearance of this series products, they still include, and cement composition-and the inherent weakness of cement still is not overcome-so they still need long storing time (being convenient to dehydration) and long curing time (more than 24 hours) can reach best low temperature and hot strength.
The objective of the invention is to develop a kind of novel self-flow pattern matrix material mould material of having improved the aggregate proportioning and having made construction technology, in order to overcome the defective of aforementioned all prior aries, make every using property data of mould material obtain improving fully and improving.
Novel mould material proposed by the invention is a kind of cement-less self-flow corundum composite casting material, it is a main raw material with fused corundom, spinel, zirconium material and some other oxide compounds (containing compound rare-earth), and the chemical ingredients (weight percent) of its aggregate prescription is:
Aluminum oxide (Al
2O
3) 60.0～78.5
Silicon oxide (SiO
2) 10.5～16.8
Zirconium white (ZrO
2) 2.8～15.2
Magnesium oxide (MgO) 2.0～4.8
Chromium sesquioxide (Cr
2O
3) 0.5～1.2
Titanium oxide (TiO
2)＜0.5
Ferric oxide (Fe
2O
3)＜0.24
Calcium oxide (CaO)＜0.2
Potassium oxide (K
2O)+sodium oxide (Na
2O) 0.1～0.2.
The construction technology that is exclusively used in this mould material is such: with requirement weighing and first mix of aggregate by prescription, to use dispersion agent again, water reducer, the slurry that low activity water and ultrafine powder are made (or directly will be used dispersion agent, the aqueous solution that water reducer and low activity water are made) by the amount of prescription requirements be added to carry out in the aggregate after just mixing carefully mixed, just can be made into mobile well pug (during the shipping of barreled wet method, can be with aggregate by prescription requirement weighing, again with dispersion agent, after low activity water and other organism stir the mobile well slurry of making stable performance together, the barrelling shipping is to the working-yard, this method can be constructed with the mode of infusion), then the pug of making is poured into mould or position to be cast, make mould material under the effect of self gravitation, move (bubble of mould material inside moved upward and discharged voluntarily this moment), thereby form more smooth plane, after leaving standstill 4～8 hours, just can toast up to use.
An important feature of the present invention is exactly not contain cement (in general casting industry classification CaO content being called the non-cement mould material less than 0.2% mould material) in this composite casting material, therefore this product has very high flowability and tamped density, very short setting time (general sclerosis only needs 4～8 hours), very low apparent porosity and very high low temperature and hot strength, fast baking, operation period lack, and are easy to store and be not subjected to the influence of natural environment and climate.Just because this, make that the use range of product of the present invention is wider, the life-span is longer, frequency of maintenance and time still less, economic benefit is also more remarkable, especially all the more so under the situation of working continuously.
Following table is listed some physical and chemical indexs of existing ultra-low cement self-flow pattern fused corundom mould material (I) and mould material of the present invention (II) respectively, as can be seen from the table, indexs such as the latter's compressive strength, volume density all obviously are better than prior art.
| Ⅰ Ⅱ |
| Apparent porosity (%)/＜13.5 |
| 1300 ℃ of compressive strength MPa * 2 hours 87＞90 |
| Volume density g/cm 3 2.95 ≥2.98 |
| Refractoriness＞1700 ℃＞1700 ℃ |
Claims (3)
1, a kind of cement-less self-flow corundum composite casting material is characterized in that it is a main raw material with fused corundom, spinel, zirconium material and some oxide compounds (containing compound rare-earth), and the chemical ingredients (weight percent) of its aggregate prescription is:
Aluminum oxide (Al
2O
3) 60.0～78.5
Silicon oxide (SiO
2) 10.5～16.8
Zirconium white (ZrO
2) 2.8～15.2
Magnesium oxide (MgO) 2.0～4.8
Chromium sesquioxide (Cr
2O
3) 0.5～1.2
Titanium oxide (TiO
2)＜0.5
Ferric oxide (Fe
2O
3)＜0.24
Calcium oxide (CaO)＜0.2
Potassium oxide (K
2O)+sodium oxide (Na
2O) 0.1～0.2
2, a kind of construction technology that is exclusively used in the described mould material of claim 1, it is characterized in that aggregate by the requirement weighing of prescription and just mixed, again the slurry that will make with dispersion agent, water reducer, low activity water and ultrafine powder by the amount of prescription requirements be added to carry out in the aggregate after just mixing carefully mixed, then the pug of making is poured into mould or position to be cast, left standstill after 4～8 hours and toast.
3, a kind of construction technology that is exclusively used in the described mould material of claim 1, it is characterized in that aggregate by the requirement weighing of prescription and just mixed, again the aqueous solution that will make with dispersion agent, water reducer and low activity water by the amount of prescription requirements be added to carry out in the aggregate after just mixing carefully mixed, then the pug of making is poured into mould or position to be cast, left standstill after 4～8 hours and toast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93121050 CN1104191A (en) | 1993-12-22 | 1993-12-22 | Cement-less self-flow corundum composite casting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93121050 CN1104191A (en) | 1993-12-22 | 1993-12-22 | Cement-less self-flow corundum composite casting material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1104191A true CN1104191A (en) | 1995-06-28 |
Family
ID=4993555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93121050 Pending CN1104191A (en) | 1993-12-22 | 1993-12-22 | Cement-less self-flow corundum composite casting material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1104191A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117710C (en) * | 1999-10-22 | 2003-08-13 | 中国科学院化学研究所 | Low-cement refractory pouring material |
| CN100453502C (en) * | 2002-02-07 | 2009-01-21 | 郑州振中电熔锆业有限公司 | Production method of electric melting magnesium-aluminium-zirconium synthetic material |
| CN100513346C (en) * | 2007-06-14 | 2009-07-15 | 武汉科技大学 | Non-cement light alumina magnesia cast material and its prepn process |
| CN101812580A (en) * | 2010-03-31 | 2010-08-25 | 马鞍山钢铁股份有限公司 | Roll collar of furnace roller of roller hearth heating furnace |
| CN101016211B (en) * | 2006-12-21 | 2012-03-21 | 武汉科技大学 | Aluminum-magnesium series lightweight pouring material and manufacturing method thereof |
| CN101501231B (en) * | 2006-07-06 | 2012-10-03 | 维苏威克鲁斯布公司 | Cement-free refractory, cement-free refractory product and manufacture method thereof |
| CN101759428B (en) * | 2009-04-10 | 2013-04-10 | 宁波大学 | Method for producing aluminium oxide ceramic composition containing novel four-component sintering additive |
| CN103068749A (en) * | 2010-08-10 | 2013-04-24 | 法商圣高拜欧洲实验及研究中心 | Chromium oxide refractory material |
| US8618006B2 (en) | 2006-07-06 | 2013-12-31 | Vesuvius Crucible Company | Cement-free refractory |
| CN103553644A (en) * | 2013-09-30 | 2014-02-05 | 河北联合大学 | Preparation method of cement-free castable |
| CN113666720A (en) * | 2021-07-26 | 2021-11-19 | 中国铝业股份有限公司 | Furnace cover of continuous ultra-high temperature furnace and castable thereof |
-
1993
- 1993-12-22 CN CN 93121050 patent/CN1104191A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117710C (en) * | 1999-10-22 | 2003-08-13 | 中国科学院化学研究所 | Low-cement refractory pouring material |
| CN100453502C (en) * | 2002-02-07 | 2009-01-21 | 郑州振中电熔锆业有限公司 | Production method of electric melting magnesium-aluminium-zirconium synthetic material |
| US8618006B2 (en) | 2006-07-06 | 2013-12-31 | Vesuvius Crucible Company | Cement-free refractory |
| CN101501231B (en) * | 2006-07-06 | 2012-10-03 | 维苏威克鲁斯布公司 | Cement-free refractory, cement-free refractory product and manufacture method thereof |
| CN101016211B (en) * | 2006-12-21 | 2012-03-21 | 武汉科技大学 | Aluminum-magnesium series lightweight pouring material and manufacturing method thereof |
| CN100513346C (en) * | 2007-06-14 | 2009-07-15 | 武汉科技大学 | Non-cement light alumina magnesia cast material and its prepn process |
| CN101759428B (en) * | 2009-04-10 | 2013-04-10 | 宁波大学 | Method for producing aluminium oxide ceramic composition containing novel four-component sintering additive |
| CN101812580A (en) * | 2010-03-31 | 2010-08-25 | 马鞍山钢铁股份有限公司 | Roll collar of furnace roller of roller hearth heating furnace |
| 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 |
| CN103068749A (en) * | 2010-08-10 | 2013-04-24 | 法商圣高拜欧洲实验及研究中心 | Chromium oxide refractory material |
| CN103068749B (en) * | 2010-08-10 | 2015-11-25 | 法商圣高拜欧洲实验及研究中心 | Chromium oxide fireproof material |
| CN103553644A (en) * | 2013-09-30 | 2014-02-05 | 河北联合大学 | Preparation method of cement-free castable |
| CN103553644B (en) * | 2013-09-30 | 2014-12-24 | 河北联合大学 | Preparation method of cement-free castable |
| CN113666720A (en) * | 2021-07-26 | 2021-11-19 | 中国铝业股份有限公司 | Furnace cover of continuous ultra-high temperature furnace and castable thereof |
| CN113666720B (en) * | 2021-07-26 | 2023-11-28 | 中国铝业股份有限公司 | Continuous ultra-high temperature furnace cover and castable thereof |
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