CN1238297C - Low cement high temperature high trength pouring material - Google Patents
Low cement high temperature high trength pouring material Download PDFInfo
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- CN1238297C CN1238297C CN 200410021509 CN200410021509A CN1238297C CN 1238297 C CN1238297 C CN 1238297C CN 200410021509 CN200410021509 CN 200410021509 CN 200410021509 A CN200410021509 A CN 200410021509A CN 1238297 C CN1238297 C CN 1238297C
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Abstract
The present invention relates to an amorphous refractory material, particularly to a low-cement high-temperature high-strength pouring material for high-temperature furnaces of a metallurgical industry under specific environment, which comprises the following components by weight: 20 to 30 portions of alumina aggregate with the AL2O3 granularity of 1 to 3mm, 10 to 20 portions of alumina aggregate with the AL2O3 granularity of 3 to 5mm, 20 to 30 portions of alumina aggregate with the AL2O3 granularity of 5 to 8mm, 10 to 30 portions of alumina aggregate with the AL2O3 granularity of 8 to 12mm, 25 to 40 portions of fine alumina powder with the AL2O3 fineness of 200 to 300 meshes, 5 to 8 portions of pure-calcium aluminate cement, 4 to 7 portions of silica fume, 0.02 to 0.05 portion of water reducing agents, namely sodium hexametaphosphate, 0.005 to 0.008 portion of antidetonators, namely fine fibers, and 5 to 8 portions of water. The amorphous refractory material has the characteristics of high temperature, high intensity, strong integrity, good thermal-shock stability, strong corrosion resistance, good air tightness, little radiation loss, energy saving, no low-melting matter or seams, etc., and the long-term service life under the condition of a three-stage vibration wave can achieve 24 months so that the operating rate is enhanced.
Description
Technical field
The present invention relates to a kind of amorphous refractory, the high-strength mould material of using under particularly a kind of metallurgy industry High Temperature Furnaces Heating Apparatus particular surroundings of low cement high temperature.
Background technology
At present, the application of amorphous refractory mould material on the metallurgy industry coal-fired furnace makes coal-fired furnace reach the large-scale production demand, and the performance of amorphous refractory mould material is to the production efficiency that improves metallurgy industry and energy-conservation significant effects arranged.The high cement refractory castable of widespread usage in technique known, tradition adopts luminite cement, aggregate, fine powder, water, add swelling agent and make, but, lack, work-ing life low and eliminated by metallurgy industry because of its intensity because the swelling agent eutectic causes bulk strength to descend when coal combustion.In the heating furnace high-temperature section of the Steel Mill that acts as a fuel with coal, forge works, every three months just needs overhaul once, even adopt such as having added SiO
2, AL
2O
3, ultrafine powder such as MgO low cement, ultra-low cement or even non-cement mould material; also can only double the work-ing life of equipment; time limit of service is difficult to satisfy the demand of scale production continuous production process about six months, therefore restricted steel rolling and forged large-scale production already.The reason that causes this situation is because steel rolling forging industry fuel commonly used is coal, and coal produces a large amount of different chemical ingredientss in the combustion processes because the place of production does not coexist, under the blowing of high pressure positive blower, corrode bigger to furnace roof, therefore heating furnace high-temperature section high temperature erosion is serious, has influenced the work-ing life of equipment.Chinese patent 93120484.4 disclosed compound alumina material for deposit without cement and 93121050.X cement-less self-flow corundum composite casting material by retrieval, these two kinds of patented technologies have added ultrafine powder in mould material, the density and the intensity of mould material have been improved, but because the adding of ultrafine powder has reduced the gap in the mould material, make the moisture content in the mould material be difficult for discharging, the explosion phenomenon when being heated, occurs, brought the harm of anti-cracking property difference.
Summary of the invention
The present invention has overcome the defective of above-mentioned existence, and purpose is to be the metallurgy industry coal-fired furnace, provides that a kind of anti-spalling is good, intensity is high, the amorphous refractory mould material of long service life---low cement deposit material.
The present invention hangs down the cement deposit material content Description:
The present invention hangs down cement deposit material, it is characterized in that: low cement deposit material comprises following composition by weight and content:
Alumina aggregate: AL
2O
3Content 80～85%
Granularity and composition by weight:
20～30 parts of 1～3mm,
10～20 parts of 3～5mm,
20～30 parts of 5～8mm,
10～30 parts of 8～12mm;
Alumina fine powder: AL
2O
3Content 80～85%, fineness 200～300 orders
Composition by weight: 25～40 parts;
Pure calcium aluminate cement: 80# AL
2O
3
Composition by weight: 5～8 parts;
Silicon ash: SiO
2＞93,
Composition by weight: 4～7 parts;
Water reducer: Sodium hexametaphosphate 99 composition by weight: 0.02～0.05 part;
Detonation suppressor: fine-fibered composition by weight: 0.005～0.008 part;
Water: composition by weight: 5～8 parts.
The present invention hangs down cement deposit material, overcome the defective of mould material in the known technology, have that high strength at high temperature, no eutectic, globality are strong, good thermal shock stability, erosion-resisting characteristics are strong, no seam, resistance to air loss is good, heat lost by radiation is little, characteristics such as energy-conservation, the life-time service life-span can reach 24 months under the condition of three grades of wave of oscillation, has improved operating rate.Production cost of the present invention is low, has remarkable economic efficiency and social benefit.
Embodiment
Embodiment 1
The present invention is low, and cement deposit material is tested at The Great Hermit Hill, Anshan civil administration forge works, selects materials:
Alumina aggregate: AL
2O
3Content 80～85%, 10 parts of 20 parts of granularity: 1～3mm, 3～5mm, 20 parts of 5～8mm, 10 parts of 8～12mm;
Alumina fine powder: AL
2O
3Content 80～85%, fineness 200 orders, 29 parts;
Pure calcium aluminate cement: 80# AL
2O
36 parts;
Silicon ash: SiO
2＞93,5 parts;
Water reducer: Sodium hexametaphosphate 99 composition by weight: 0.03 part;
Detonation suppressor: fine-fibered composition by weight: 0.005 part;
Water: 6 parts.
Be applied in the research of doing experiment under 5 tons of pneumatic hammer operations, wave of oscillation is below three grades, 1350～1400 ℃ of furnace temperature, and fire coal, 3～4 tons of weights of forging, the stove order can reach 24 months.
Embodiment 2
The low cement deposit material of the present invention in Anshan three and Steel Mill test, be applied in cast high temperature section wall, in the whole molding of heating furnace high-temperature section, adopting forced stirrer to stir after 5～15 minutes pours into a mould, when cast during half workload with vibrating head vibrate, integer, form removal behind the twenty four hours is with little fire baking.Leading indicator: AL
2O
3＞65%, refractoriness＞1760 ℃, crushing strength under high temperature＞50MPa, high-strength folding strength＞50MPa, body close＞2.6, the line velocity of variation is-1.Carry out production test and study 24 months, metope is breakage 20% only, also in normal use.
Claims (1)
1, a kind of low cement deposit material, it is characterized in that: low cement deposit material comprises following composition by weight and content:
Alumina aggregate: AL
2O
3Content 80～85%
Granularity and composition by weight:
20～30 parts of 1～3mm,
10～20 parts of 3～5mm,
20～30 parts of 5～8mm,
10～30 parts of 8～12mm;
Alumina fine powder: AL
2O
3Content 80～85%, fineness 200～300 orders
Composition by weight: 25～40 parts;
Pure calcium aluminate cement: 80# AL
2O
3
Composition by weight: 5～8 parts;
Silicon ash: SiO
2＞93,
Composition by weight: 4～7 parts;
Water reducer: Sodium hexametaphosphate 99 composition by weight: 0.02～0.05 part;
Detonation suppressor: fine-fibered composition by weight: 0.005～0.008 part;
Water: composition by weight: 5～8 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021509 CN1238297C (en) | 2004-07-21 | 2004-07-21 | Low cement high temperature high trength pouring material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021509 CN1238297C (en) | 2004-07-21 | 2004-07-21 | Low cement high temperature high trength pouring material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1597604A CN1597604A (en) | 2005-03-23 |
| CN1238297C true CN1238297C (en) | 2006-01-25 |
Family
ID=34663334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410021509 Expired - Fee Related CN1238297C (en) | 2004-07-21 | 2004-07-21 | Low cement high temperature high trength pouring material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1238297C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363304C (en) * | 2005-07-07 | 2008-01-23 | 江苏苏嘉集团新材料有限公司 | Spinel low-cement functional refractory material pouring material |
| CN101190849B (en) * | 2007-09-30 | 2010-08-04 | 河南省耕生耐火材料有限公司 | Flash baking pouring material |
| CN102659423A (en) * | 2012-04-12 | 2012-09-12 | 江苏耐基炉衬有限公司 | Alumina-based spinel pouring material and its preparation method |
| CN102838366B (en) * | 2012-09-27 | 2014-07-30 | 云南楚雄诚鑫高温新材料有限公司 | High-strength refractory casting material and preparation method thereof |
| CN103253946B (en) * | 2013-04-25 | 2016-03-09 | 郑州航空工业管理学院 | A kind of using method of Explosionproof low cement castable |
| CN103253945B (en) * | 2013-04-25 | 2016-01-20 | 天津佰思特新材料科技有限公司 | A kind of Explosionproof low cement castable |
| CN103435359B (en) * | 2013-07-10 | 2015-05-06 | 长兴正豪耐火材料有限公司 | Thermal shock-resistant refractory castable material |
| CN103759537A (en) * | 2014-01-17 | 2014-04-30 | 福建兴航机械铸造有限公司 | Construction method for low-cement refractory castables at bottom of stepping heating furnace |
| CN109721342A (en) * | 2019-02-22 | 2019-05-07 | 江苏江能新材料科技有限公司 | A kind of tapping pouring refractories and preparation method thereof |
| CN114195491A (en) * | 2021-12-31 | 2022-03-18 | 郑州恒祥建材有限公司 | High-alumina fiber castable |
-
2004
- 2004-07-21 CN CN 200410021509 patent/CN1238297C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1597604A (en) | 2005-03-23 |
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