SU1505914A1 - Charge for producing refractories - Google Patents
Charge for producing refractories Download PDFInfo
- Publication number
- SU1505914A1 SU1505914A1 SU874220970A SU4220970A SU1505914A1 SU 1505914 A1 SU1505914 A1 SU 1505914A1 SU 874220970 A SU874220970 A SU 874220970A SU 4220970 A SU4220970 A SU 4220970A SU 1505914 A1 SU1505914 A1 SU 1505914A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- alumina
- mixture
- corundum
- mullite
- expansion coefficient
- Prior art date
Links
- 239000011819 refractory material Substances 0.000 title claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 6
- 239000010431 corundum Substances 0.000 claims abstract description 6
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract 4
- 229910052863 mullite Inorganic materials 0.000 claims abstract 4
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract 3
- 235000013539 calcium stearate Nutrition 0.000 claims abstract 3
- 239000008116 calcium stearate Substances 0.000 claims abstract 3
- 239000004927 clay Substances 0.000 claims abstract 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 230000004580 weight loss Effects 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
Изобретение касаетс огнеупорных материалов дл высокотемпературных тепловых агрегатов. С целью снижени открытой пористости, коэффициента термического расширени , дополнительной усадки, а также повышени устойчивости к истиранию при высоких температурах шихта на основе корунда, муллита и глинозема дополнительного содержит стеарат кальци и глину, а в качестве глинозема смесь глиноземов марок ГО и ГК при следующем соотношении компонентов, мас.%: корунд 40-65, муллит 9-20, смесь глиноземов марок ГО и ГК при соотношении (0,5:1)-(1:1) 20-30, стеарат кальци 0,5-2,5, глина 5,5-7,5. Издели готов т из шихты по обычной керамической технологии - формованием, сушкой и последующим обжигом при 1630-1750°С. Открыта пористость изделий составл ет 15,5-18,0%, коэффициент термического расширени (6,6-6,8).10-6:990С-1 The invention relates to refractory materials for high temperature thermal units. In order to reduce open porosity, thermal expansion coefficient, additional shrinkage, as well as increase abrasion resistance at high temperatures, the charge based on corundum, mullite and additional alumina contains calcium stearate and clay, and as alumina a mixture of alumina grades GO and GK in the following ratio components, wt.%: corundum 40-65, mullite 9-20, a mixture of alumina grades GO and GK with a ratio of (0.5: 1) - (1: 1) 20-30, calcium stearate 0.5-2.5 , clay 5.5-7.5. Products are prepared from the charge according to the usual ceramic technology — molding, drying and subsequent firing at 1630-1750 ° C. The open porosity of the products is 15.5-18.0%, the thermal expansion coefficient (6.6-6.8) . 10 -6 : 990C -1
потери массы при истирании в процессе эксплуатации в туннельной печи при 1650 °С в течении 10 циклов 0,12-0,16%weight loss during attrition in a tunnel kiln at 1,650 ° C for 10 cycles 0.12-0.16%
дополнительна усадка за 6 ч при 1630°С не превышает 0,3-0,4%. 1 табл.additional shrinkage in 6 hours at 1630 ° С does not exceed 0.3-0.4%. 1 tab.
Description
Изобретение относитс к технологии огнеупоров и может быть использовано дл получени плотных корундовых изделий, устойчивых к истиранию при высоких температурах, с невысокими значени ми коэффициента термического расширени и дополнительной .усадки, например плит и капселей (подвижного огнеприпаса), дл обжига алюмооксидных подложек и вакуум-плотной керамики.The invention relates to refractory technology and can be used to obtain dense corundum products that are resistant to abrasion at high temperatures, with low values of thermal expansion coefficient and additional shrinkage, such as plates and caps (mobile fire box), for roasting aluminum oxide substrates and vacuum dense ceramics.
Целью изобретени вл етс снижение открытой пористости, коэффициента термического расширени и дополнительной усадки, а также повьш1ение устойчивости к истиранию при высоких температурах.The aim of the invention is to reduce open porosity, thermal expansion coefficient and additional shrinkage, as well as to increase abrasion resistance at high temperatures.
Издели , из такой шихты готов т по обычной керамической технологии: формованием, сушкой и последующим обжигом при 1650-1750 С. В качестве глинозема с содержанием 25-35% л , и с содержанием 80-85% о используют глиноземы марок ГО и ГК соответственно.Products made from such a mixture are prepared according to the usual ceramic technology: molding, drying and subsequent firing at 1650-1750 C. Alumina grades GO and GK are used as alumina with a content of 25-35% l, and with a content of 80-85% o. .
Составы корундовых огнеупоров из предлагаемой шихты в сравненииThe compositions of corundum refractories of the proposed mixture in comparison
inin
yiyi
соwith
с известной и свойства приведены в таблице.with known and properties are given in the table.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874220970A SU1505914A1 (en) | 1987-04-06 | 1987-04-06 | Charge for producing refractories |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874220970A SU1505914A1 (en) | 1987-04-06 | 1987-04-06 | Charge for producing refractories |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1505914A1 true SU1505914A1 (en) | 1989-09-07 |
Family
ID=21295016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874220970A SU1505914A1 (en) | 1987-04-06 | 1987-04-06 | Charge for producing refractories |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1505914A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2417966C2 (en) * | 2006-08-28 | 2011-05-10 | Рифрэктори Интеллектуал Проперти Гмбх Унд Ко. Кг | Burnt refractory ceramic product |
-
1987
- 1987-04-06 SU SU874220970A patent/SU1505914A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент US № 3135616, кл. 106-65/ 1987. Авторское свидетельство СССР № 607822, кл. С 04 В 35/10, 1976. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2417966C2 (en) * | 2006-08-28 | 2011-05-10 | Рифрэктори Интеллектуал Проперти Гмбх Унд Ко. Кг | Burnt refractory ceramic product |
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