CN102557684A - Silica brick for coke oven - Google Patents
Silica brick for coke oven Download PDFInfo
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- CN102557684A CN102557684A CN2011104408872A CN201110440887A CN102557684A CN 102557684 A CN102557684 A CN 102557684A CN 2011104408872 A CN2011104408872 A CN 2011104408872A CN 201110440887 A CN201110440887 A CN 201110440887A CN 102557684 A CN102557684 A CN 102557684A
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Abstract
The invention relates to a refractory material, in particular to a silica brick for a coke oven of 5.5 m. The silica brick comprises a raw material and an auxiliary material, wherein the raw material comprises the following components in part by weight: 200-250 parts of silica coarse powder, 330-380 parts of silica medium powder, 80-130 parts of silica fine powder and 80-120 parts of residual silica bricks as clinker powder; the auxiliary material comprises a mineralizing agent, lime milk and paper pulp which respectively occupy 1.2 percent, 8 percent and 1 percent of the total weight of the raw material; and the mineralizing agent is formed by mixing manganese powder of which the content of MnO2 is more than or equal to 25 percent and iron phosphate powder of which the content of FeO is more than or equal to 65 percent according to the proportion of 1:1. The preparation of the silica brick comprises the following steps: adding the silica coarse powder, the silica medium powder, the fine power and the residual silica bricks in a wet mill; adding the mineralizing agent for dry mixing for 4-5 minutes; adding the lime milk and compacting for 10-15 minutes; adding the paper pulp, mixing till pug is uniform, compacting and forming into a blank. The silica brick is improved from the aspects of raw material selection, raw material particle grain fineness, dimension distribution and the like, and the various physical and chemical indexes of the silica brick are superior to the national standard, so that the service life of the coke oven can be remarkably improved.
Description
Technical field
The present invention relates to refractory materials, specifically is that a kind of 5.5m coke oven is used silica brick.
Background technology
" coking industry entry criteria (2008 editions) " regulation that comes into effect on January 1st, 2009; Newly-built tamping coke furnace coking chamber height is necessary >=5.5m, maximize in order to adapt to coke oven, and guarantee coking production; Prolong coke oven work-ing life, coke oven has been proposed requirements at the higher level with refractory quality.But at present coke oven with silica brick owing to the refractory raw material quality, select for use and there are differences, defective such as feed particles fineness, distribution of sizes are unreasonable makes the 5.5m coke oven not reach national standard with the physical and chemical standards of silica brick, has had a strong impact on the work-ing life of coke oven.
Summary of the invention
The object of the invention solves existing coke oven with the coke oven short problem in work-ing life that the silica brick quality dissatisfaction causes, and provides a kind of 5.5m coke oven to use silica brick.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
A kind of coke oven is used silica brick, comprises raw material and auxiliary material, represent with weight proportion, and silica meal 200-250 part in the composition of raw materials, powder 330-380 part in the silica, silica fine powder 80-130 part, as residual silica brick 80-120 part of chamotte powder,
Powder selects for use five silicas or five silicas and Xiyang silica with the mixed silica that mixes of the weight ratio of 1:1 in silica meal and the silica.The silica fine powder is made up of 50% silica meal and 50% residual silica brick, and each item index of five silicas and Xiyang silica is as shown in the table:
Raw material need pass through selection, batching, fragmentation and deironing, and must not there be thickness on the raw material surface greater than 1mm impurity and red clay during selection, must not sneak into earth, mountain skin and other foreign material; Forbidden to have the vestige of spongy, honeycomb, iron; Raw material lumpiness after selection should be less than 300mm, and greater than 30mm, batching must be through metering; Feed intake and want evenly, broken back lumpiness is less than 70mm.
Described silica meal is made up of three parts, and wherein the silica of particle size range between 3～1mm accounts for 64%-74%, the silica 24%-34% between 1～0.088mm, and less than the silica 1%-2% of 0.088mm,
Powder is made up of three parts in the described silica, the silica 1%-2% of particle size range between 3～1mm wherein, and the silica 64%-74% between 1～0.088mm,, less than the silica 24%-34% of 0.088mm,
Described silica fine powder is made up of two portions, the silica 5%-15% of particle size range between 1～0.088mm wherein, and less than the silica 85%-95% of 0.088mm,
Described residual silica brick is made up of three parts, the silica 1%-2% of particle size range between 3～1mm wherein, and the silica 58%-68% between 1～0.088mm is less than the silica 30%-40% of 0.088mm;
Comprise the mineralizer that accounts for raw material gross weight 1.2%, 8% milk of lime and 1% paper pulp in the auxiliary material, mineralizer is by MnO
2The manganese powder of content>=25%: the iron phosphorus powder of FeO content>=65% forms by the mixed of 1:1;
The milk of lime making method is to add digester with picking up the lime (CaO content is greater than 70%) that selected, and through the fine grinding of digestion machine, crosses double-deck 22 eye mesh screens entering and deposits the pond; Shelf-time was greater than 24 hours; Milk of lime should stir, and excessive moisture takes out, and milk of lime proportion is 1.26～1.28 g/cm
3The proportion of paper pulp is 1.25-1.28 g/cm
3, pH value 4-5.
Add in wet the stone roller with powder in silica meal, the silica, fine powder with as the residual silica brick of chamotte powder, add mineralizer again and do and mixed 4-5 minute, add milk of lime then, roll 10-15 minute after, add paper pulp again, it is even to pug to mix, and rolls the moulding base.Mix consistent to the pug color even, do not have caking, no walk can go out to grind, must be before milk of lime, paper pulp add through double-deck 22 eye mesh screens filtration, the time of mixing should not comprise discharging time greater than 30 minutes, mixed pug sieves through 3 eye mesh screens.
Coke oven of the present invention is used silica brick, is applicable to the 5.5m coke oven, improves from aspects such as the selecting for use of raw material, feed particles fineness, distribution of sizes, and its each item physical and chemical index all is superior to national standard, can significantly improve the work-ing life of coke oven.
Embodiment
Embodiment 1
Raw material: silica meal 200kg, powder 330kg in the silica, silica fine powder 80kg, as residual silica brick 80kg part of chamotte powder,
The silica meal is made up of three parts, and wherein the silica of particle size range between 3～1mm accounts for the silica 24% between 64%, 1～0.088mm, less than the silica 1% of 0.088mm; Powder is made up of three parts in the silica, the silica 64% between silica 1%, the 1～0.088mm of particle size range between 3～1mm wherein, and, less than the silica 24% of 0.088mm; The silica fine powder is made up of two portions, the silica 5% of particle size range between 1～0.088mm wherein, and less than the silica 85% of 0.088mm, the silica fine powder is made up of 50% silica meal and 50% residual silica brick; Residual silica brick is made up of three parts, and the silica 58% between silica 1%, the 1～0.088mm of particle size range between 3～1mm wherein is less than the silica 30% of 0.088mm.
Auxiliary material: 1.2% mineralizer, 8% milk of lime and 1% paper pulp, mineralizer is by MnO
2The manganese powder of content>=25%: the iron phosphorus powder of FeO content>=65% forms by the mixed of 1:1.The proportion of paper pulp is 1.25 g/cm
3, pH value 4, milk of lime proportion is 1.26 g/cm
3
Preparing method: in powder, fine powder and wet stone roller of residual silica brick adding in silica meal, the silica, add mineralizer again and did mixed 4 minutes, add milk of lime then as chamotte powder; After rolling 10 minutes; Add paper pulp again, it is even to pug to mix, and rolls; The moulding base must filter through double-deck 22 eye mesh screens before milk of lime, paper pulp add.
Embodiment 2
Raw material: silica meal 250kg, powder 380kg in the silica, silica fine powder 130kg, as the residual silica brick 120kg of chamotte powder,
The silica meal is made up of three parts, and wherein the silica of particle size range between 3～1mm accounts for the silica 34% between 74%, 1～0.088mm, less than the silica 2% of 0.088mm; Powder is made up of three parts in the silica, the silica 74% between silica 2%, the 1～0.088mm of particle size range between 3～1mm wherein, and, less than the silica 34% of 0.088mm; The silica fine powder is made up of two portions, the silica 15% of particle size range between 1～0.088mm wherein, and less than the silica 95% of 0.088mm, the silica fine powder is made up of 50% silica meal and 50% residual silica brick; Residual silica brick is made up of three parts, and the silica 68% between silica 2%, the 1～0.088mm of particle size range between 3～1mm wherein is less than the silica 40% of 0.088mm.
Auxiliary material: 1.2% mineralizer, 8% milk of lime and 1% paper pulp, mineralizer is by MnO
2The manganese powder of content>=25%: the iron phosphorus powder of FeO content>=65% forms by the mixed of 1:1.The proportion of paper pulp is 1.28 g/cm
3, pH value 5, milk of lime proportion is 1.28 g/cm
3
Preparing method: in powder, fine powder and wet stone roller of residual silica brick adding in silica meal, the silica, add mineralizer again and did mixed 5 minutes, add milk of lime then as chamotte powder; After rolling 15 minutes; Add paper pulp again, it is even to pug to mix, and rolls; The moulding base must filter through double-deck 22 eye mesh screens before milk of lime, paper pulp add.
Embodiment 3
Raw material: silica meal 220kg, powder 350kg in the silica, silica fine powder 100kg, as the residual silica brick 110kg of chamotte powder,
The silica meal is made up of three parts, and wherein the silica of particle size range between 3～1mm accounts for the silica 30% between 70%, 1～0.088mm, less than the silica 1.5% of 0.088mm; Powder is made up of three parts in the silica, the silica 65% between silica 1.8%, the 1～0.088mm of particle size range between 3～1mm wherein, and, less than the silica 32% of 0.088mm; The silica fine powder is made up of two portions, the silica 10% of particle size range between 1～0.088mm wherein, and less than the silica 90% of 0.088mm, the silica fine powder is made up of 50% silica meal and 50% residual silica brick; Residual silica brick is made up of three parts, and the silica 60% between silica 1.2%, the 1～0.088mm of particle size range between 3～1mm wherein is less than the silica 35% of 0.088mm.
Auxiliary material: 1.2% mineralizer, 8% milk of lime and 1% paper pulp, mineralizer is by MnO
2The manganese powder of content>=25%: the iron phosphorus powder of FeO content>=65% forms by the mixed of 1:1.The proportion of paper pulp is 1.26 g/cm
3, pH value 4, milk of lime proportion is 1.27 g/cm
3
Preparing method: in powder, fine powder and wet stone roller of residual silica brick adding in silica meal, the silica, add mineralizer again and did mixed 4 minutes, add milk of lime then as chamotte powder; After rolling 12 minutes; Add paper pulp again, it is even to pug to mix, and rolls; The moulding base must filter through double-deck 22 eye mesh screens before milk of lime, paper pulp add.
Embodiment 4
Raw material: silica meal 240kg, powder 360kg in the silica, silica fine powder 120kg, as the residual silica brick 100kg of chamotte powder,
The silica meal is made up of three parts, and wherein the silica of particle size range between 3～1mm accounts for the silica 25% between 68%, 1～0.088mm, less than the silica 1% of 0.088mm; Powder is made up of three parts in the silica, the silica 72% between silica 2%, the 1～0.088mm of particle size range between 3～1mm wherein, and, less than the silica 30% of 0.088mm; The silica fine powder is made up of two portions, the silica 12% of particle size range between 1～0.088mm wherein, and less than the silica 87% of 0.088mm, the silica fine powder is made up of 50% silica meal and 50% residual silica brick; Residual silica brick is made up of three parts, and the silica 65% between silica 1.5%, the 1～0.088mm of particle size range between 3～1mm wherein is less than the silica 32% of 0.088mm.
Auxiliary material: 1.2% mineralizer, 8% milk of lime and 1% paper pulp, mineralizer is by MnO
2The manganese powder of content>=25%: the iron phosphorus powder of FeO content>=65% forms by the mixed of 1:1.The proportion of paper pulp is 1.27 g/cm
3, pH value 4.5, milk of lime proportion is 1.28 g/cm
3
Preparing method: in powder, fine powder and wet stone roller of residual silica brick adding in silica meal, the silica, add mineralizer again and did mixed 5 minutes, add milk of lime then as chamotte powder; After rolling 14 minutes; Add paper pulp again, it is even to pug to mix, and rolls; The moulding base must filter through double-deck 22 eye mesh screens before milk of lime, paper pulp add.
Claims (5)
1. a coke oven is used silica brick, comprises raw material and auxiliary material, represent with weight proportion, and silica meal 200-250 part in the composition of raw materials, powder 330-380 part in the silica, silica fine powder 80-130 part, as residual silica brick 80-120 part of chamotte powder,
Described silica meal is made up of three parts, and wherein the silica of particle size range between 3～1mm accounts for 64%-74%, the silica 24%-34% between 1～0.088mm, and less than the silica 1%-2% of 0.088mm,
Powder is made up of three parts in the described silica, the silica 1%-2% of particle size range between 3～1mm wherein, and the silica 64%-74% between 1～0.088mm,, less than the silica 24%-34% of 0.088mm,
Described silica fine powder is made up of two portions, the silica 5%-15% of particle size range between 1～0.088mm wherein, and less than the silica 85%-95% of 0.088mm,
Described residual silica brick is made up of three parts, the silica 1%-2% of particle size range between 3～1mm wherein, and the silica 58%-68% between 1～0.088mm is less than the silica 30%-40% of 0.088mm;
Auxiliary material comprises the mineralizer that accounts for raw material gross weight 1.2%, 8% milk of lime and 1% paper pulp, and mineralizer is by MnO
2The manganese powder of content>=25%: the iron phosphorus powder of FeO content>=65% forms by the mixed of 1:1;
Add in wet the stone roller with powder in silica meal, the silica, fine powder with as the residual silica brick of chamotte powder, add mineralizer again and do and mixed 4-5 minute, add milk of lime then, roll 10-15 minute after, add paper pulp again, it is even to pug to mix, and rolls the moulding base.
2. coke oven according to claim 1 is used silica brick, it is characterized in that: described silica fine powder is made up of 50% silica meal and 50% residual silica brick.
3. coke oven according to claim 1 is used silica brick, it is characterized in that: the proportion of paper pulp is 1.25-1.28 g/cm
3, pH value 4-5.
4. coke oven according to claim 1 is used silica brick, it is characterized in that: described mineralizer particle size range is less than particle >=85% of 0.088mm.
5. coke oven according to claim 1 is used silica brick, it is characterized in that: filter through double-deck 22 eye mesh screens before milk of lime, paper pulp add.
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| CN2011104408872A CN102557684A (en) | 2011-12-26 | 2011-12-26 | Silica brick for coke oven |
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| CN2011104408872A CN102557684A (en) | 2011-12-26 | 2011-12-26 | Silica brick for coke oven |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449831A (en) * | 2013-08-29 | 2013-12-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Welding repair material for repairing coking furnace and method for repairing coking furnace |
| CN103787607A (en) * | 2014-01-21 | 2014-05-14 | 洛阳理工学院 | Preparation and use methods of novel environment-friendly mineralizer for silicon brick |
| CN105272289A (en) * | 2015-10-13 | 2016-01-27 | 中钢集团耐火材料有限公司 | Anti-erosion silica brick for carbon calcination furnace |
| CN105272290A (en) * | 2015-10-13 | 2016-01-27 | 中钢集团耐火材料有限公司 | Preparation method of anti-erosion silica brick for carbon calcination furnace |
| CN106542749A (en) * | 2016-09-26 | 2017-03-29 | 西安建筑科技大学 | A kind of pre-synthesis silica brick mineralizer and preparation method thereof |
| CN107827472A (en) * | 2017-11-29 | 2018-03-23 | 山西盂县西小坪耐火材料有限公司 | The preparation method of 6.25M silica brick for coke oven |
| CN107986801A (en) * | 2017-11-29 | 2018-05-04 | 山西盂县西小坪耐火材料有限公司 | 7.65M silica brick for coke oven |
| 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 |
| CN111574232A (en) * | 2020-05-19 | 2020-08-25 | 山西盂县西小坪耐火材料有限公司 | High-thermal-conductivity and high-density silica brick for coke oven and preparation method thereof |
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| CN101117293A (en) * | 2007-07-18 | 2008-02-06 | 山西盂县西小坪耐火材料有限公司 | Semi-silica brick for 7.63-meter coke oven |
| CN101117294A (en) * | 2007-07-18 | 2008-02-06 | 山西盂县西小坪耐火材料有限公司 | Silicon brick for 7-meter coke oven |
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Patent Citations (2)
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| CN101117293A (en) * | 2007-07-18 | 2008-02-06 | 山西盂县西小坪耐火材料有限公司 | Semi-silica brick for 7.63-meter coke oven |
| CN101117294A (en) * | 2007-07-18 | 2008-02-06 | 山西盂县西小坪耐火材料有限公司 | Silicon brick for 7-meter coke oven |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449831B (en) * | 2013-08-29 | 2015-09-09 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of coke oven soldering material and repairing coke oven |
| CN103449831A (en) * | 2013-08-29 | 2013-12-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Welding repair material for repairing coking furnace and method for repairing coking furnace |
| CN103787607A (en) * | 2014-01-21 | 2014-05-14 | 洛阳理工学院 | Preparation and use methods of novel environment-friendly mineralizer for silicon brick |
| CN103787607B (en) * | 2014-01-21 | 2015-12-02 | 洛阳理工学院 | A kind of preparation method of silica brick novel environment friendly mineralizer and using method |
| CN105272290B (en) * | 2015-10-13 | 2018-03-20 | 中钢集团耐火材料有限公司 | A kind of preparation method of carbon calciner anti-erosion silica brick |
| CN105272289A (en) * | 2015-10-13 | 2016-01-27 | 中钢集团耐火材料有限公司 | Anti-erosion silica brick for carbon calcination furnace |
| CN105272290A (en) * | 2015-10-13 | 2016-01-27 | 中钢集团耐火材料有限公司 | Preparation method of anti-erosion silica brick for carbon calcination furnace |
| CN105272289B (en) * | 2015-10-13 | 2018-03-20 | 中钢集团耐火材料有限公司 | A kind of carbon calciner anti-erosion silica brick |
| CN106542749A (en) * | 2016-09-26 | 2017-03-29 | 西安建筑科技大学 | A kind of pre-synthesis silica brick mineralizer and preparation method thereof |
| CN106542749B (en) * | 2016-09-26 | 2019-02-19 | 西安建筑科技大学 | A kind of pre-synthesis silica brick mineralizer and preparation method thereof |
| CN107827472A (en) * | 2017-11-29 | 2018-03-23 | 山西盂县西小坪耐火材料有限公司 | The preparation method of 6.25M silica brick for coke oven |
| CN107986801A (en) * | 2017-11-29 | 2018-05-04 | 山西盂县西小坪耐火材料有限公司 | 7.65M silica brick for coke oven |
| 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 |
| CN111574232A (en) * | 2020-05-19 | 2020-08-25 | 山西盂县西小坪耐火材料有限公司 | High-thermal-conductivity and high-density silica brick for coke oven and preparation method thereof |
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Application publication date: 20120711 |