CN100372796C - Composite silicon brick - Google Patents
Composite silicon brick Download PDFInfo
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- CN100372796C CN100372796C CNB2005100485751A CN200510048575A CN100372796C CN 100372796 C CN100372796 C CN 100372796C CN B2005100485751 A CNB2005100485751 A CN B2005100485751A CN 200510048575 A CN200510048575 A CN 200510048575A CN 100372796 C CN100372796 C CN 100372796C
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- brick
- composite silicon
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- silicon
- calcium oxide
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Abstract
The present invention discloses a composite silicon brick used for liners of high temperature zones of blast furnace iron making hot blast stoves and liners of combustion chambers and carbonization chambers of coke stoves. Raw materials and adhesives are uniformly mixed into mixtures, and the composite silicon brick is fired by formation and drying for 32 to 64 hours for heat insulation at 1400 to 1480 DEG C after the mixtures are bundled. The raw materials of the composite silicon brick comprise 80 to 90% of SiO2 materials, 5 to 15% of silicon carbide, 0.5 to 3% of metal silicon powder, 1 to 3% of adhesives, 0 to 2% of iron scale powder, 0 to 2% of sodium carbonate and 0 to 3% of calcium oxide, wherein the grain size of the SiO2 materials is from 0.074mm to 3mm, the grain size of the silicon carbide is from 0.074mm to 3mm, the grain size of the metal silicon powder is from 200 meshes to 500 meshes, and the grain size of the iron scale powder is less than -180 meshes. The composite silicon brick has the advantages of high heat shock stability, high load softening point, high pressure resisting strength at normal temperature, low creep rate, stripping prevention, no breakage, long service life, use cost saving, simple manufacture process, etc., and is suitable for industrial production.
Description
One. technical field: the present invention relates to the silica fire resistant brick that blast furnace ironmaking hotblast stove high-temperature zone liner and coke oven combustion chamber, coking chamber liner are used, particularly relate to a kind of composite silicon brick.
Two. background technology: modern steel associated enterprises requires to have the ability that hot blast temperature more than 1200 ℃ is provided as the hotblast stove of the main auxiliary facility of blast furnace, and has 15～20 year life-span in order to obtain tangible overall economic efficiency.At present, Low Creep High Alumina Bricks or silica brick are all adopted in high-temperature zone such as the furnace wall on the top of hotblast stove vault, combustion chamber and regenerator top and regenerator epimere checker brick.Since the following performance deficiency that these refractory brick exist, and be difficult to satisfy the requirement that modern blast furnace is smelted and long service life high temperature resistant to hotblast stove.
The defective that Low Creep High Alumina Bricks or silica brick exist: (1) is main raw material with the bauxitic clay, add the part corundum, mullite, when the Low Creep High Alumina Bricks that the method for compound " three stone " (sillimanite, andaluzite and kyanite) is made is used for wind-warm syndrome greater than the high-temperature zone of 1150 ℃ of hotblast stoves under the long term high temperature load, masonry occurs being out of shape, subsiding etc., can not guarantee that hotblast stove obtains the life-span more than 10 years under 1150 ℃ of high temperature.(2) silica brick (SiO of hotblast stove use at present
2Content 〉=95%), phase transformation and the volume effect during phase transformation intensification, the cooling operation that are very harshly limiting hotblast stove of contained quartz when middle temperature, in the periodic burning one air-supply cycle operation of hotblast stove, silica brick usually microcrack occurs and causes peeling off breakage, and then influences the high-temperature operation and the work-ing life of hotblast stove.
The liner masonry of coke oven combustion chamber is when being in high temperature action more than 1300 ℃ and coke pushing for a long time and the rubbing effect of coke; The masonry of coke furnace carbonization chamber be in equally for a long time the periodic acute variation state of furnace temperature (during low temperature coaling with high temperature the time discharge of the coke); And coaling, when the discharging of the coke, coal, pushing ram, coke etc. produce bigger friction, squeezing action to the inside lining body.Combustion chamber, coking chamber liner when adopting silica brick to build by laying bricks or stones, because silica brick anti-thermal shock destructive performance is lower, abrasion resistance is poor, occur easily peeling off, break, depression, unfilled corner breakage, influence work-ing life, are difficult to satisfy the work and the life requirements of coke oven.
Three. summary of the invention:
Purpose of the present invention:, the invention provides a kind of composite silicon brick in order to overcome the work-ing life of disadvantages of background technology, prolongation high-blast-temperature hot-blast stove and coke oven combustion chamber, coking chamber liner.
Technical scheme of the present invention:
A kind of composite silicon brick, raw material that will contain and tackiness agent are mixed and evenly are compound, after the sincere system, through moulding, dry, burn till and make.Be mixed by weight percentage and contain the SiO that granularity is 0.074～3mm in the uniform compound
2Material 80～90%, granularity is the silicon carbide 5～15% of 0.074～3mm, and granularity is 200～500 purpose metallic silicon powers 0.5～3%, and tackiness agent is 1～3%.
Also containing granularity is 0～2% for-180 purpose iron scale powder, yellow soda ash Na
2CO
3Be 0～2%, calcium oxide CaO is 0～3%, selects in three kinds of materials any one, or selects in three kinds of materials any two kinds, or selects whole three kinds of materials.
SiO
2Material is the compound of silica material and useless silica brick pulverizing material, and wherein useless silica brick is pulverized material and account for 0～15% weight percent in compound.
Tackiness agent is a dextrin, or is xylogen, or is the mixture of dextrin and xylogen.
Calcium oxide CaO is that granularity is 200～300 purpose dry mash, or adds the creme that clear water is deployed into by the calcium oxide powder.
Described composite silicon brick is to be 1400～1480 ℃ at firing temperature to be incubated 32～64 hours down.Positive beneficial effect of the present invention:
1. it is strong that composite silicon brick of the present invention has a thermal shock resistance, and thermal shock is stablized under 1100 ℃ of the number of times, and water-cooled is greater than 15 times, and the load softening point height is greater than 1660 ℃; The cold crushing strength height is greater than 70MPa; Apparent porosity is low, and void content is less than 18%; Creep rate is low, and at 0.2MPa, under the 1550 ℃ * 50h condition, creep rate is less than 0.6%.
2. silica brick antistripping of the present invention, do not break, when being used for coking chamber, the combustion chamber liner of hotblast stove, coke oven, long service life is saved use cost.
3. silica brick manufacture craft of the present invention is simple, is fit to suitability for industrialized production.
Composite silicon brick of the present invention and hotblast stove are with the silica brick performance relatively
| Project | Hotblast stove silica brick | Composite silicon brick of the present invention |
| Cold crushing strength (MPa) | ≥35 | ≥70 |
| Apparent porosity (%) | ≤22 | ≤18 |
| Creep rate (0.2MPa, 1550 ℃ * 50h) (%) | ≤0.8 | ≤0.6 |
| Thermal shock resistance (1100 ℃) (inferior) | ≥15 | |
| Loading softening begin temperature (0.2MPa) (℃) | ≥1660 | |
| Coefficient of thermal expansion (1000 ℃) (%) | ≤1.26 | ≤1.26 |
Four. embodiment:
Embodiment one: according to mixing to ratio in the table 1, evenly the back complete sincerity is made type, drying with raw material, burns till after 48 hours in insulation under 1400 ℃ of temperature, and the performance of made composite silicon brick sees Table 6.
Table 1 raw material is formed
| Raw material | Silica | Silicon carbide | Pure Silicon Metal | Ferric oxide (iron scale) | The powdery calcium oxide | Dextrin |
| Size range | 0.074～3mm | 0.074～3mm | 200～500 orders | -180 orders | ||
| Weight percent (%) | 82 | 12 | 1 | 1 | 2 | 2 |
Embodiment two: according to mixing to ratio in the table 2, evenly the back complete sincerity is made type, drying with raw material, burns till after 38 hours in insulation under 1480 ℃ of temperature, and the performance of made composite silicon brick sees Table 6.
Table 2 raw material is formed
| Raw material | Silica | Silicon carbide | Pure Silicon Metal | Yellow soda ash | The powdery calcium oxide | Dextrin |
| Granularity | 0.074～3mm | 0.074～3mm | 200～500 orders | |||
| Weight percent (%) | 90 | 5 | 0.5 | 1 | 2 | 1.5 |
Embodiment three: according to mixing to ratio in the table 3, evenly the back complete sincerity is made type, drying with raw material, burns till after 52 hours in insulation under 1460 ℃ of temperature, and the performance of made composite silicon brick sees Table 6.
Table 3 raw material is formed
| Raw material | Silica | Silicon carbide | Pure Silicon Metal | Yellow soda ash | The paste calcium oxide | Dextrin |
| Granularity | 0.074～3mm | 0.074～3mm | 200～500 orders | |||
| Weight percent (%) | 86 | 8 | 1 | 1.5 | 1.5 | 2 |
Embodiment four: according to mixing to ratio in the table 4, evenly the back complete sincerity is made type, drying with raw material, burns till after 64 hours in insulation under 1400 ℃ of temperature, and the performance of made composite silicon brick sees Table 6
Table 4 raw material is formed
| Raw material | Silica | Useless silica brick | Silicon carbide | Pure Silicon Metal | Ferric oxide (iron scale) | The paste calcium oxide | Xylogen |
| Granularity | 0.074～ 3mm | 0.074～ 3mm | 0.074～ 3mm | 200～500 orders | -180 orders | ||
| Weight percent (%) | 75 | 9 | 10 | 1 | 1 | 2 | 2 |
Embodiment five: according to mixing to ratio in the table 5, evenly the back complete sincerity is made type, drying with raw material, burns till after 40 hours in insulation under 1480 ℃ of temperature, and the performance of made composite silicon brick sees Table 6.
Table 5 raw material is formed
| Raw material | Silica | Useless silica brick | Silicon carbide | Pure Silicon Metal | Yellow soda ash | Dextrin | Xylogen |
| Granularity | 0.074～3mm | 0.074～3mm | 0.074 3mm | 200～500 orders | |||
| Weight percent (%) | 68 | 12 | 14 | 2 | 1.5 | 1 | 1.5 |
The performance data table of table 6 composite silicon brick
| Embodiment one | Embodiment two | Embodiment three | Embodiment four | Embodiment five | |
| Cold crushing strength (MPa) | 78 | 75 | 70 | 82 | 79 |
| Apparent porosity (%) | 16 | 18 | 15 | 13 | 9 |
| Creep rate (0.2MPa, 1550 ℃ * 50h) (%) | 0.6 | 0.4 | 0.5 | 0.3 | 0.4 |
| Thermal shock resistance (1100 ℃) (inferior) | 20 | 15 | 19 | 16 | 18 |
| Refractoriness under load (0.2MPa) (℃) | 1670 | 1680 | 1660 | 1700 | 1660 |
| Coefficient of thermal expansion (1000 ℃) (%) | 1.26 | 1.26 | 1.13 | 1.21 | 1.18 |
Claims (5)
1. composite silicon brick, raw material that will contain and tackiness agent are mixed and evenly are compound, after the sincere system, fire and form through moulding, oven dry, it is characterized in that: contain the SiO that granularity is 0.074～3mm in the uniform compound that is mixed by weight percentage
2Material 80～90%, granularity is the silicon carbide 5～15% of 0.074～3mm, and granularity is 200～500 purpose metallic silicon powers 0.5～3%, and tackiness agent is 1～3%, and granularity is 180 purpose iron scale powder 0～2%, yellow soda ash NaCO
3Be 0～2%, calcium oxide CaO is 0～3%, selects a kind of from iron scale powder, yellow soda ash, three kinds of materials of calcium oxide arbitrarily or two kinds or three kinds.
2. composite silicon brick according to claim 1 is characterized in that: SiO
2Material is the compound of silica material and useless silica brick pulverizing material, and wherein useless silica brick is pulverized material and account for 0～15% weight percent in compound.
3. composite silicon brick according to claim 1 and 2 is characterized in that: tackiness agent is a dextrin, or is xylogen, or is the mixture of dextrin and xylogen.
4. composite silicon brick according to claim 1 is characterized in that: calcium oxide CaO is that granularity is 200～300 purpose dry mash, or adds the creme that clear water is deployed into by the calcium oxide powder.
5. composite silicon brick according to claim 1 is characterized in that: be 1400～1480 ℃ at firing temperature and be incubated 32～64 hours down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100485751A CN100372796C (en) | 2005-11-18 | 2005-11-18 | Composite silicon brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100485751A CN100372796C (en) | 2005-11-18 | 2005-11-18 | Composite silicon brick |
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| CN1792952A CN1792952A (en) | 2006-06-28 |
| CN100372796C true CN100372796C (en) | 2008-03-05 |
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| CNB2005100485751A Expired - Fee Related CN100372796C (en) | 2005-11-18 | 2005-11-18 | Composite silicon brick |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457686C (en) * | 2007-07-18 | 2009-02-04 | 山西盂县西小坪耐火材料有限公司 | Semi-silica brick for 7.63-meter coke oven |
| CN100457687C (en) * | 2007-07-18 | 2009-02-04 | 山西盂县西小坪耐火材料有限公司 | Silicon brick for 7-meter coke oven |
| CN101654376B (en) * | 2009-08-26 | 2012-11-28 | 武汉科技大学 | Porous light heat-insulation and heat-preservation material and preparation method thereof |
| CN101774819B (en) * | 2010-02-24 | 2012-01-11 | 淄博嘉环耐火材料有限公司 | Zero creep low-aluminum mullite brick |
| CN102303974A (en) * | 2011-08-01 | 2012-01-04 | 河南春胜耐材有限公司 | Wear-resistance high-density silicon brick for coke ovens and preparation process thereof |
| CN102515780A (en) * | 2011-12-15 | 2012-06-27 | 中冶焦耐(大连)工程技术有限公司 | Preparation method of mineralizing agent and binding agent used for silica brick production through co-milling |
| CN102992784B (en) * | 2012-11-15 | 2014-09-24 | 中钢集团耐火材料有限公司 | Homogeneous same-phase silica mud for large coke oven |
| CN104119090B (en) * | 2014-08-09 | 2015-12-30 | 浙江特拉建材有限公司 | Sintered refractory block |
| CN104119091B (en) * | 2014-08-09 | 2015-12-30 | 浙江特拉建材有限公司 | The preparation method of sintered refractory block |
| CN108975868A (en) * | 2018-09-10 | 2018-12-11 | 郑红升 | A kind of material for high temperature microwave |
| CN109251048A (en) * | 2018-10-08 | 2019-01-22 | 山东嘉岳新材料有限公司 | A kind of high-densit silica brick and preparation method thereof |
| CN109574641A (en) * | 2018-12-27 | 2019-04-05 | 中钢集团耐火材料有限公司 | A kind of energy-saving hot-air stove high thermal conductivity silica brick |
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| JPS5659668A (en) * | 1979-10-16 | 1981-05-23 | Harima Refractories Co Ltd | Manufacture of nonburnt magnesia carbon brick |
| JPH0572345A (en) * | 1991-09-17 | 1993-03-26 | Shimadzu Corp | Radiographic camera |
| CN1094384A (en) * | 1994-05-03 | 1994-11-02 | 冶金工业部钢铁研究总院 | Non-aqueous thermosetting refractory mortar |
| CN1260334A (en) * | 1999-01-12 | 2000-07-19 | 黄崧基 | Formulation of special-purpose abrasive block for grinding and polishing vitrifacted brick and stone material, and its manufacture method |
| WO2002016281A1 (en) * | 2000-08-21 | 2002-02-28 | Lafarge S.A. | Hydraulic binder concrete for making prefabricated tiles, panels and the like |
| CN1370136A (en) * | 1999-06-07 | 2002-09-18 | 联合矿物产品公司 | Lightweight dry refractory |
| CN1415575A (en) * | 2002-10-25 | 2003-05-07 | 周季楠 | Method for producing kiln furniture made from cordierite |
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2005
- 2005-11-18 CN CNB2005100485751A patent/CN100372796C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5659668A (en) * | 1979-10-16 | 1981-05-23 | Harima Refractories Co Ltd | Manufacture of nonburnt magnesia carbon brick |
| JPH0572345A (en) * | 1991-09-17 | 1993-03-26 | Shimadzu Corp | Radiographic camera |
| CN1094384A (en) * | 1994-05-03 | 1994-11-02 | 冶金工业部钢铁研究总院 | Non-aqueous thermosetting refractory mortar |
| CN1260334A (en) * | 1999-01-12 | 2000-07-19 | 黄崧基 | Formulation of special-purpose abrasive block for grinding and polishing vitrifacted brick and stone material, and its manufacture method |
| CN1370136A (en) * | 1999-06-07 | 2002-09-18 | 联合矿物产品公司 | Lightweight dry refractory |
| WO2002016281A1 (en) * | 2000-08-21 | 2002-02-28 | Lafarge S.A. | Hydraulic binder concrete for making prefabricated tiles, panels and the like |
| CN1415575A (en) * | 2002-10-25 | 2003-05-07 | 周季楠 | Method for producing kiln furniture made from cordierite |
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| CN1792952A (en) | 2006-06-28 |
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Owner name: ZHENGZHOU HUAYU BLAST FURNACE ENGINEERING TECHNOLO Free format text: FORMER OWNER: HUAYU REFRACTORY CO., LTD., ZHENGZHOU Effective date: 20120706 |
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Free format text: CORRECT: ADDRESS; FROM: 451251 ZHENGZHOU, HENAN PROVINCE TO: 451200 ZHENGZHOU, HENAN PROVINCE |
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Effective date of registration: 20120706 Address after: 451200 Henan city of Zhengzhou province Gongyi City Luo Zhen Shi Guan Cun Patentee after: ZHENGZHOU HUAYU BLAST FURNACE ENGINEERING CO., LTD. Address before: 451251 Industrial Zone, Nanhe, Henan, Gongyi Patentee before: Huayu Refractory Co., Ltd., Zhengzhou |
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Granted publication date: 20080305 Termination date: 20131118 |