CN101337823A - Fire-resistant material coated by hot-blast valve - Google Patents
Fire-resistant material coated by hot-blast valve Download PDFInfo
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- CN101337823A CN101337823A CNA200810141092XA CN200810141092A CN101337823A CN 101337823 A CN101337823 A CN 101337823A CN A200810141092X A CNA200810141092X A CN A200810141092XA CN 200810141092 A CN200810141092 A CN 200810141092A CN 101337823 A CN101337823 A CN 101337823A
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Abstract
The invention discloses a blastfurnace hot air duct used hot blast valve covering fireproof material, which is prepared with the following materials by weight proportion:45-60 percent of light multihole mullite aggregate with the size from 0 to 10mm; 18 to 25 percent of bauxite chamotte powder with the particle size less than or equal to 0.088mm; 3 to 8 percent of silica micropowder; 3 to 10 percent of Guangxi clay powder; 5 to 20 percent of aluminate cement; 5 to 15 percent of an additive; and 13 to 20 percent of additional water for construction. Proper raw materials are selected, and prepared reasonably to get the high performance fireproof material; the thermal insulativity and the resistance to the erosion of hot blast of the material are combined organically, thus saving energy and reducing consumption. As the properties of the fireproof material vary with the additives, low conductivity material can be prepared for valve caps and valve bodies, which has good energy-saving effect; high temperature resistant and thermal shock resistant material which is resistant to the erosion of host blast can be prepared for valve plates, and valve bodies, and has heat insulating property to some extent. The fireproof materials for all parts are made the best use of and are consumed synchronously, thus saving the energy, reducing the consumption, and prolonging the service life of hot blast valves.
Description
Technical field
The present invention relates to a kind of refractory materials of hot blast valve liner covering of iron-smelting blast furnace hot air duct application.
Background technology
Hot blast valve liner coating fire-resistant material; be exactly at Hot-blast valve three big members; the position of contact hot blast evenly covered with refractory materials during valve body, valve plate, valve gap were used, and protective valve plate metal member is not subjected to the direct effect of high-temperature hot-air, prevents hardware hot mastication, oxidation corrosion.According to each position application of temperature difference of Hot-blast valve, suffered high-temperature hot-air washes away difference, will bear temperature about 900 ℃ at valve gap and the non-latus rectum of valve body position table body, and high temperature wind washes away slightly; To bear for a long time at valve body latus rectum and valve plate part material table body and surpass about 1100 ℃ temperature, hot-blast pressure 0.2～0.45MPa is washed away by high temperature wind, and this position temperature variation is violent.The refractory materials that the Hot-blast valve tradition is used, adopt individual layer heavy amorphous refractory to cover, can satisfy high temperature resistant, heat-resisting wind washes away, but heavy refractory materials thermal conductivity height, effect of heat insulation is relatively poor, so Hot-blast valve need adopt a large amount of recirculated water coolings to reduce the hardware temperature, is unfavorable for water saving, and is energy-conservation.Also have and adopt lightweight refractory to cover, though good heat-insulation effect, material heat resistanceheat resistant wind erosion is poor, and the life-span is short.Hot blast valve liner coating fire-resistant material, each position generally all adopt with a kind of refractory materials, because the difference of each position application conditions causes each position refractory life can not reach synchronously, refractory materials can not be made the best use of everything.
Summary of the invention
The present invention is for solving the problem that above-mentioned traditional refractory materials exists, select suitable materials, adopt different configuration proportions, obtain the refractory materials of different performance, use, make the different sites refractory life synchronous at each different sites, thermal insulation and the heat-resisting wind performance of flushing of guaranteeing refractory materials organically combine, thereby reach energy saving purposes, for this reason, the refractory materials that provides a kind of new hot blast valve to cover.
The technical solution used in the present invention is as follows:
The starting material and the weight proportion of the refractory materials that this hot blast valve covers are:
Light porous mullite aggregate: particle diameter 10～0mm, 45%～60%;
High bauxite clinker powder: particle diameter≤0.088mm, 18%～25%;
Fine silica powder: 3%～8%;
Guangxi clay powder: 3%～10%;
Aluminate cement: 5%～20%.
Admixture: 5～15%;
The outer amount of water of constructing: 13～20%.
Wherein light porous mullite aggregate particle diameter 10～0mm is meant the level Four grating of particle diameter 10～5mm, 5～3mm, 3～1mm and 1～0mm, and its total content is 45%～60%.
Above-mentioned starting material blending process by weight is:
The various starting material consumptions of weighing add aggregate in the Forced Mixing machine, a meromict of totalling water consumption earlier 1～2 minute adds remaining material back remix 1～2 minute, adds up second half of water consumption again, mixes 3～5 minutes, and the working-yard casting and constructing is delivered in discharging.
The physical and chemical index of the refractory materials that this hot blast valve covers is as follows:
Refractory materials after the preparation, middle high volume good stability, unit weight is little, and thermal conductivity is low, adds different types of admixture, as: pearl is floated in adding or alumina hollow ball further will hang down the physical strength that density of material and thermal conductivity do not change material substantially; Add the swelling agent kyanite, ground silica and Alpha-alumina micro mist improve high volume stability in the material; Adding boric acid, lithium lime stone, clay impel cryogenic sintering in the material for complex sintered dose, improve mechanical behavior under high temperature; Add tripoly phosphate sodium STPP and Sodium hexametaphosphate 99 water reducer and adjust water consumption.
The present invention selects suitable materials, rationally prepares, and obtains high performance refractory materials, guarantees that the thermal insulation of material and heat-resisting wind performance of flushing organically combine, thereby reaches energy saving purposes.By adding different admixtures, obtain the different refractory materials of performance, can prepare low thermal conductivity material at valve gap, valve body latus rectum position, good energy-saving effect is arranged; Make the material that high temperature resistant, anti-thermal shock, heat-resisting wind are washed away at valve plate, valve body latus rectum position, and certain heat-proof quality is arranged; The present invention makes the refractory materials at each position accomplish to make the best use of everything, and consumes synchronously, thereby accomplishes energy-saving and cost-reducingly to use long-life unification with hot blast valve.
Embodiment
Main raw material(s) requires and the source:
| Starting material | The trade mark, specification | Manufacturer, the place of production |
| Light porous mullite aggregate | M60 | Yanshi refractory materials company limited of bright high section |
| Aluminate cement | CA-50、CA-80 | Zhengzhou Dengfeng Smelting Materials Co., Ltd. |
| High bauxite clinker powder | GA-70、GA-80 | Tafelberg, Henan |
| Clay powder | Soft | Guangxi |
| Fine silica powder | Secondary | Retail |
| Ground silica | GS-97 | Various places silica source mill |
Embodiment 1
The DN1800 of Wuhan Iron and Steel Company hot blast valve, application site: the non-latus rectum of valve body, valve gap.
The starting material proportioning by weight that this refractory materials adopts is:
Light porous mullite aggregate: particle diameter 10～5mm, 17%; Particle diameter 5～3mm, 19%;
Particle diameter 3～1mm, 17%; Particle diameter 1～0mm, 4%;
High bauxite clinker powder (GA-70): particle diameter 0.088mm, 24%;
Fine silica powder: 5%;
Clay powder: 8%;
Aluminate cement (CA-80) 6%.
Admixture: float pearl: 4%;
Lithium lime stone: 2%;
Ground silica: particle diameter≤0.088mm, 1.5%;
Boric acid: 0.3%;
Tripoly phosphate sodium STPP: 0.08%;
Sodium hexametaphosphate 99: 0.06%.
The outer amount of water of constructing: 17%.
Every physical and chemical index measured value:
This hot blast valve was tried out at Wuhan Iron and Steel Plant in May, 2007, used well, and the effect of saving water and energy is obvious, compares water-saving amount with the ordinary hot air valve and can reach more than 56%, is subjected to user's abundant affirmation.
Embodiment 2
Peace steel DN900 hot blast valve, the refractory materials that the non-latus rectum of valve body, valve gap position cover is with embodiment one;
Valve plate, the starting material proportioning by weight that valve body latus rectum position refractory materials adopts is:
Light porous mullite aggregate: particle diameter 10～5mm, 19%; Particle diameter 5～3mm, 19%;
Particle diameter 3～1mm, 13%; Particle diameter 1～0mm, 8%;
High bauxite clinker (GA-80): particle diameter≤0.088mm, 24%;
Fine silica powder: 4%;
Clay powder: 4%;
Aluminate cement (CA-80): 9%.
Admixture: Alpha-alumina micro mist: 5%;
Kyanite: particle diameter≤0.15mm, 2%;
Alumina hollow ball: particle diameter 3～1mm, 5%;
Lithium lime stone: 1%;
Tripoly phosphate sodium STPP: 0.08%;
Sodium hexametaphosphate 99: 0.06%.
The outer amount of water of constructing: 15%.
Every physical and chemical index measured value
This hot blast valve was tried out at the peace steel in October, 2007, and effect is good, and water-saving result is obvious.
Embodiment 3
Letter steel DN1100 energy-saving hot blast valve using little water.Application site: the valve gap working lining, the starting material proportioning by weight that this refractory materials of valve plate thermal insulation layer adopts is:
Light porous mullite aggregate: particle diameter 10～5mm, 17%; Particle diameter 5～3mm, 18%;
Particle diameter 3～1mm, 14%; Particle diameter 1～0mm, 4%;
High bauxite clinker (GA-70): particle diameter≤0.088mm, 20%;
Fine silica powder: 5%;
Clay powder: 3%;
Aluminate cement (CA-50) 19%.
Admixture: float pearl: 5%;
Ground silica: particle diameter≤0.088mm, 2%;
Boric acid: 1%;
Tripoly phosphate sodium STPP: 0.2%.
The outer amount of water of constructing: 19%.
The physical and chemical index measured value
This hot blast valve was tried out at the letter steel in September, 2007, and effect is good.
Claims (6)
1. the refractory materials that covers of a hot blast valve, its starting material and weight proportion are:
Light porous mullite aggregate: particle diameter 10～0mm, 45%～60%;
High bauxite clinker powder: particle diameter≤0.088mm, 18%～25%;
Fine silica powder: 3%～8%;
Guangxi clay powder: 3%～10%;
Aluminate cement: 5%～20%.
Admixture: 5～15%;
The outer amount of water of constructing: 13～20%.
2. the refractory materials that hot blast valve according to claim 1 covers, it is characterized in that: described light porous mullite aggregate particle diameter 10～0mm is meant the level Four grating of particle diameter 10～5mm, 5～3mm, 3～1mm and 1～0mm, and its total content is 45%～60%.
3. the refractory materials that hot blast valve according to claim 1 covers, it is characterized in that: admixture that adds in the described starting material and weight ratio thereof are: float pearl 4%; Lithium lime stone 2%; Ground silica particle diameter≤0.088mm, 1.5%; Boric acid 0.3%; Tripoly phosphate sodium STPP 0.08%; Sodium hexametaphosphate 99 0.06%.
4. the refractory materials that hot blast valve according to claim 1 covers, it is characterized in that: admixture that adds in the described starting material and weight ratio thereof are: Alpha-alumina micro mist 5%; Kyanite particle diameter≤0.15mm, 2%; Alumina hollow ball particle diameter 3～1mm, 5%; Lithium lime stone 1%; Tripoly phosphate sodium STPP 0.08%; Sodium hexametaphosphate 99 0.06%.
5. the refractory materials that hot blast valve according to claim 1 covers, it is characterized in that: admixture that adds in the described starting material and weight ratio thereof are: float pearl 5%; Ground silica particle diameter≤0.088mm, 2%; Boric acid 1%; Tripoly phosphate sodium STPP 0.2%.
6. the refractory materials that hot blast valve according to claim 1 covers, it is characterized in that: described starting material blending process by weight is the various starting material consumptions of weighing, in the Forced Mixing machine, add light porous mullite aggregate, one meromict of totalling water consumption 1～2 minute, add remaining material again and mixed 1～2 minute, the back adds up second half of water consumption, mixes 3～5 minutes, the working-yard casting and constructing is delivered in discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810141092XA CN101337823A (en) | 2008-08-21 | 2008-08-21 | Fire-resistant material coated by hot-blast valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810141092XA CN101337823A (en) | 2008-08-21 | 2008-08-21 | Fire-resistant material coated by hot-blast valve |
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| CN101337823A true CN101337823A (en) | 2009-01-07 |
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| CNA200810141092XA Pending CN101337823A (en) | 2008-08-21 | 2008-08-21 | Fire-resistant material coated by hot-blast valve |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101659558B (en) * | 2009-08-07 | 2012-03-21 | 通达耐火技术股份有限公司 | 500kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101659561B (en) * | 2009-08-07 | 2012-03-21 | 通达耐火技术股份有限公司 | 800kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101659559B (en) * | 2009-08-07 | 2012-04-11 | 通达耐火技术股份有限公司 | 600kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101659560B (en) * | 2009-08-07 | 2012-04-18 | 通达耐火技术股份有限公司 | 700kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101768006B (en) * | 2010-01-13 | 2012-06-27 | 河南中原特种耐火材料有限公司 | Lightweight refractory for glass smelting kiln |
| CN103265302A (en) * | 2013-06-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Refractory castable for side protecting plate of converter as well as production method and application of refractory castable |
| CN108675732A (en) * | 2018-06-27 | 2018-10-19 | 常州优纳新材料科技有限公司 | A kind of conduit saddle heat-insulating heat-preserving material and preparation method thereof |
| CN111517813A (en) * | 2020-05-25 | 2020-08-11 | 郑州东豫新材料科技有限公司 | Heavy refractory material used for top combustion type hot blast stove top and capable of resisting thermal shock and preparation method thereof |
| CN112645670A (en) * | 2020-12-29 | 2021-04-13 | 河南安筑装配式防排烟风管有限公司 | Floating bead fireproof heat insulation plate |
| CN112980467A (en) * | 2021-02-03 | 2021-06-18 | 广东韶钢松山股份有限公司 | Compound coal charging hole cover and manufacturing method thereof |
| CN114230350A (en) * | 2021-12-20 | 2022-03-25 | 世林（漯河）冶金设备有限公司 | Light high-strength mullite castable and construction method thereof |
-
2008
- 2008-08-21 CN CNA200810141092XA patent/CN101337823A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101659558B (en) * | 2009-08-07 | 2012-03-21 | 通达耐火技术股份有限公司 | 500kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101659561B (en) * | 2009-08-07 | 2012-03-21 | 通达耐火技术股份有限公司 | 800kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101659559B (en) * | 2009-08-07 | 2012-04-11 | 通达耐火技术股份有限公司 | 600kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101659560B (en) * | 2009-08-07 | 2012-04-18 | 通达耐火技术股份有限公司 | 700kg-class energy-saving heat insulation lining material and preparation method thereof |
| CN101768006B (en) * | 2010-01-13 | 2012-06-27 | 河南中原特种耐火材料有限公司 | Lightweight refractory for glass smelting kiln |
| CN103265302A (en) * | 2013-06-03 | 2013-08-28 | 武汉钢铁(集团)公司 | Refractory castable for side protecting plate of converter as well as production method and application of refractory castable |
| CN103265302B (en) * | 2013-06-03 | 2014-08-13 | 武汉钢铁(集团)公司 | Refractory castable for side protecting plate of converter as well as production method and application of refractory castable |
| CN108675732A (en) * | 2018-06-27 | 2018-10-19 | 常州优纳新材料科技有限公司 | A kind of conduit saddle heat-insulating heat-preserving material and preparation method thereof |
| CN111517813A (en) * | 2020-05-25 | 2020-08-11 | 郑州东豫新材料科技有限公司 | Heavy refractory material used for top combustion type hot blast stove top and capable of resisting thermal shock and preparation method thereof |
| CN112645670A (en) * | 2020-12-29 | 2021-04-13 | 河南安筑装配式防排烟风管有限公司 | Floating bead fireproof heat insulation plate |
| CN112980467A (en) * | 2021-02-03 | 2021-06-18 | 广东韶钢松山股份有限公司 | Compound coal charging hole cover and manufacturing method thereof |
| CN114230350A (en) * | 2021-12-20 | 2022-03-25 | 世林（漯河）冶金设备有限公司 | Light high-strength mullite castable and construction method thereof |
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Open date: 20090107 |