CN101117292A - Silicon brick for 7.63-meter coke oven - Google Patents
Silicon brick for 7.63-meter coke oven Download PDFInfo
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- CN101117292A CN101117292A CNA2007100624715A CN200710062471A CN101117292A CN 101117292 A CN101117292 A CN 101117292A CN A2007100624715 A CNA2007100624715 A CN A2007100624715A CN 200710062471 A CN200710062471 A CN 200710062471A CN 101117292 A CN101117292 A CN 101117292A
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Abstract
The invention relates to the corhart technical field, in particular to quartz bricks for 7.63m coking chamber. The invention overcomes the drawbacks of the prior quartz bricks for 7.63m coking chamber that as difference exists in the quality and choice of the corhart, the particle fineness and size distribution of the material are unreasonable, iron content is above the standard. The weight percentage compositions of the formulation of the invention are as follows: twenty-five percent to thirty-five percent of silica coarse power, forty-one percent to forty-seven percent of silica middle power, ten percent to twenty percent of fine powder formed by fifty percent of silicon and residual fifty percent of silica brick, and ten percent to twenty percent of residual silica brick. The material further comprises accessories of one point nine percent to two point one percent of mineralizer mixed by manganese powder and potassium feldspar according to a proportion of one to one, seven point five percent to eight point five percent of lime cream and zero point nine percent to one point one percent of paper pulp. The invention is superior over the prior quartz bricks of the prior 7.63m coking chamber in terms of physicochemical indexes of the silica brick made by the formulation of the invention, such as chemical composition, compressive strength, porosity and refractability, etc., particularly in terms of lower content of bengala ( Fe2O3). The invention has the advantages of rich source of the material, reasonable fineness of aggregate and size distribution.of particles. The quartz brick can meet the design and complication degree of and dimensions of shapes of bricks for the 7.63 coking chamber and is suitable for mass production of the coking chamber.
Description
Technical field
The present invention relates to technical field of refractory materials, be specially a kind of 7.63m coke oven silica brick.
Background technology
In the industrial circle, the burnt amount of single hole coking chamber product is widened and increase, improved to coke oven maximization, coking chamber is the developing direction of coke oven.External coking chamber height has reached 7.63m, this is because large capacity coke oven is compared than traditional little volume coke oven, it is few to have floor space, the coal tower, coke over machinery equipment operation quantity and operator are few, advantages such as the pollutant emission of coke oven is low, maximize for adapting to coke oven simultaneously, assurance coking is produced, prolong coke oven work-ing life, coke oven requirements at the higher level have been proposed with refractory quality, and the design of this coke oven brick type, complexity and physical dimension have also surmounted the industry standard of traditional little volume coke oven usefulness silica brick greatly all considerably beyond the design of traditional coke oven to the requirement of its physical and chemical index.But domestic, external at present 7.63m coke oven with silica brick because the refractory raw material quality, select for use there are differences, feed particles fineness, defective such as distribution of sizes is unreasonable, iron level exceeds standard, make the 7.63m large capacity coke oven often not reach people's expected value with the physical and chemical index of silica brick.
Summary of the invention
The present invention for solve existing 7.63m coke oven with silica brick owing to the refractory raw material quality, select for use there are differences, feed particles fineness, defective such as distribution of sizes is unreasonable, iron level exceeds standard, often do not reach people's expected value, a kind of 7.63m coke oven silica brick is provided.
The present invention adopts following technical scheme to realize: 7.63m coke oven silica brick, represent with weight percent, contain silica meal 25-35% in the composition of raw materials, powder 41-47% in the silica, fine powder and the residual silica brick 10-20% of the 10-20% that silica by 50% and 50% residual silica brick constitute, SiO in the above-mentioned silica
2Content is not less than 97.5%, and other reference index of silica is Al
2O
3≤ 0.8%, Fe
2O
3≤ 0.8%, CaO≤0.7%, described residual silica brick is meant truncation, unfilled corner in the finished product silica brick, profiles such as crackle arranged, defective substandard products in appearance, rather than refer to that its physical and chemical index does not reach the substandard products of requirement, the residual silica brick that 7.63m coke oven preferably of the present invention is produced, when coke oven of the present invention for putting into operation first, also can be the residual silica brick that other type of furnace is produced;
Described silica meal is made of three parts, and wherein the silica of particle size range between 1-3mm accounts for 64-74%, and particle size range accounts for 24-34% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 1-2%; Powder is made of three parts in the described silica, and wherein the silica of particle size range between 1-3mm accounts for 1-2%, and particle size range accounts for 64-74% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 24-34%; Described fine powder is made of two portions, and wherein particle size range accounts for 5-15% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 85-95%; Described residual silica brick is made of three parts, and wherein the residual silica brick of particle size range between 1-3mm accounts for 1-2%, and particle size range accounts for 64-74% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 24-34%; Fineness is meant the granular size of refractory raw material, particle size distribution is meant in successive, the different fineness level range, the shared weight percent of each other particle of fineness level, the particle size distribution of refractory raw material all has very big influence to the performance index such as volume density, void content, physical strength, plasticity-, firing property and stability of fire-resistant silica brick, applicant of the present invention through repeatedly proportioning test, comparison, analysis, draws fineness and the particle size distribution of above-mentioned 7.63m coke oven with the raw material of silica brick on theoretical basis;
Also comprise the following auxiliary material that accounts for above-mentioned main raw material gross weight in the composition of raw materials: by the mineralizer 1.9-2.1% that manganese powder and potassium felspar sand form by 1: 1 mixed, milk of lime 7.5-8.5%, its proportion are 1.24-1.28g/cm
3, paper pulp 0.9-1.1%, its proportion are 1.20-1.24g/cm
3, PH is 4-5, paper pulp can be buied from Liaoning Linhai City Jincheng Paper Mill, Liaoning Prov. at least, can strengthen the plasticity-of brick body; Mineralizer, milk of lime can play the plasticity-that strengthens the brick body, promote the effect of burning till conversion of silica.
Powder in silica meal, the silica, fine powder and residual silica brick are added in wet the stone roller, 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 goes out to grind the moulding base.
Silica in described silica meal, the silica in powder and the fine powder all selects for use five silica fragmentations to form, and five silicas are meant the silica that is produced from area, Wutai Mountain, Shanxi Province, and its composition and performance index are that those of ordinary skill in the art is known.
For milk of lime, the paper pulp that prevents to add in the major ingredient rolls deficiency, form walk, cause the brick body after burning till to produce fusion hole, described milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller; The described uniform pug that mixes is through 3 eye mesh screens screening aftershaping.
Described mineralizer is broken into the particle of particle diameter less than 0.088mm.
Adopt the prepared 7.63m coke oven of prescription of the present invention and making method to compare with silica brick with at present domestic and international 7.63m coke oven with every physical and chemical index of silica brick, as shown in the table,
| Performance | The described silica brick of prior art | Silica brick of the present invention | |||||
| KN | KD | KS | KN | KD | KS | ||
| Regenerator furnace wall furnace roof | Furnace wall | At the bottom of the coking chamber | Regenerator furnace wall furnace roof | Furnace wall | At the bottom of the coking chamber | ||
| Chemical ingredients | SiO 2(％) | ≥94.5 | ≥95.0 | ≥95 | ≥95 | ||
| Al 2O 3(％) | ≤2.0 | ≤1.5 | ≤0.7 | ≤0.7 | |||
| Fe 2O 3(％) | ≤1.0 | ≤1.0 | ≤0.9 | ≤0.9 | |||
| CaO(％) | ≤3.0 | ≤3.0 | ≤2.5 | ≤2.5 | |||
| Na 2O+K 2O (％) | ≤0.35 | ≤0.35 | ≤0.28 | ≤0.28 | |||
| Residual quartz (%) | 1.5 | ≤1 | |||||
| Cold crushing strength (MPa) | ≥28 | ≥35 | ≥45 | ≥40 | ≥50 | ≥65 | |
| Open porosity (%) | ≤24.5 | ≤22.0 | ≤22.0 | ≤22 | ≤21 | ≤21 | |
| Load softening point begin temperature (℃) | ≥1640 | ≥1650 | ≥1650 | ≥1650 | |||
| Creep % | Z5-25 | ≤0.12 | ---- ---- | ≤0.09 | |||
| Z25 | ≤0.35 | ---- ---- | ≤0.35 | ||||
| Refractoriness (℃) | 1700 | -------- | -------- | ≥1700 | |||
As seen from the above table, adopt the physical and chemical index of the silica brick that prescription of the present invention makes, all be better than existing 7.63m coke oven silica brick, especially Fe as indexs such as chemical ingredients, compressive strength, void content, refractoriness
2O
3Content is obviously lower.The present invention have raw material sources extensively, advantage such as fineness of aggregate and particle size distribution be reasonable, the silica brick that makes meets the requirement of design, complexity and the physical dimension of this coke oven brick type fully, adapts to the requirement that coke oven maximizes and produces.
Embodiment
Embodiment 1:
7.63m coke oven silica brick is represented with weight percent, contains silica meal 25% in the composition of raw materials, powder 47% in the silica, 10% fine powder and residual silica brick 18% that silica by 50% and 50% residual silica brick constitute, SiO in the above-mentioned silica
2Content is not less than 97.5%, described residual silica brick is the residual silica brick that coke oven of the present invention is produced, described silica meal is made of three parts, wherein the silica of particle size range between 1-3mm accounts for 64%, particle size range accounts for 34% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 2%; Powder is made of three parts in the described silica, and wherein the silica of particle size range between 1-3mm accounts for 2%, and particle size range accounts for 64% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 34%; Described fine powder is made of two portions, and wherein particle size range accounts for 5% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 95%; Described residual silica brick is made of three parts, and wherein the residual silica brick of particle size range between 1-3mm accounts for 1%, and particle size range accounts for 71% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 28%; Silica in described silica meal, the silica in powder and the fine powder all selects for use five silica fragmentations to form; Also comprise the following auxiliary material that accounts for above-mentioned main raw material gross weight in the composition of raw materials: by the mineralizer 1.9% that manganese powder and potassium felspar sand form by 1: 1 mixed, mineralizer is broken into the particle of particle diameter less than 0.088mm, and milk of lime 7.5%, its proportion are 1.24g/cm
3, paper pulp 0.9%, its proportion are 1.20g/cm
3, PH is 4;
Powder, fine powder and residual silica brick in silica meal, the silica are added in wet the stone roller, adding mineralizer again did mixed 5 minutes, add milk of lime then, after rolling 10 minutes, add paper pulp again, it is even to pug to mix, and goes out to grind after the screening of 3 eye mesh screens, the moulding base, milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 2:
7.63m coke oven silica brick is represented with weight percent, contains silica meal 35% in the composition of raw materials, powder 41% in the silica, 14% fine powder and residual silica brick 10% that silica by 50% and 50% residual silica brick constitute, SiO in the above-mentioned silica
2Content is not less than 97.5%, when coke oven of the present invention when putting into operation first, described residual silica brick also can be the residual silica brick that other type of furnace is produced, described silica meal is made of three parts, wherein the silica of particle size range between 1-3mm accounts for 74%, particle size range accounts for 24% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 2%; Powder is made of three parts in the described silica, and wherein the silica of particle size range between 1-3mm accounts for 2%, and particle size range accounts for 74% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 24%; Described fine powder is made of two portions, and wherein particle size range accounts for 15% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 85%; Described residual silica brick is made of three parts, and wherein the residual silica brick of particle size range between 1-3mm accounts for 1%, and particle size range accounts for 65% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 34%; Silica in described silica meal, the silica in powder and the fine powder all selects for use five silica fragmentations to form; Also comprise the following auxiliary material that accounts for above-mentioned main raw material gross weight in the composition of raw materials: by the mineralizer 2.1% that manganese powder and potassium felspar sand form by 1: 1 mixed, mineralizer is broken into the particle of particle diameter less than 0.088mm, and milk of lime 8.5%, its proportion are 1.28g/cm
3, paper pulp 1.1%, its proportion are 1.24g/cm
3, PH is 5;
Powder, fine powder and residual silica brick in silica meal, the silica are added in wet the stone roller, adding mineralizer again did mixed 5 minutes, add milk of lime then, after rolling 15 minutes, add paper pulp again, it is even to pug to mix, and goes out to grind after the screening of 3 eye mesh screens, the moulding base, milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 3:
7.63m coke oven silica brick is represented with weight percent, contains silica meal 30% in the composition of raw materials, powder 45% in the silica, 15% fine powder and residual silica brick 10% that silica by 50% and 50% residual silica brick constitute, SiO in the above-mentioned silica
2Content is not less than 97.5%, described residual silica brick is the residual silica brick that coke oven of the present invention is produced, described silica meal is made of three parts, wherein the silica of particle size range between 1-3mm accounts for 68%, particle size range accounts for 30% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 2%; Powder is made of three parts in the described silica, and wherein the silica of particle size range between 1-3mm accounts for 2%, and particle size range accounts for 68% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 30%; Described fine powder is made of two portions, and wherein particle size range accounts for 10% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 90%; Described residual silica brick is made of three parts, and wherein the residual silica brick of particle size range between 1-3mm accounts for 2%, and particle size range accounts for 68% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 30%; Silica in described silica meal, the silica in powder and the fine powder all selects for use five silica fragmentations to form; Also comprise the following auxiliary material that accounts for above-mentioned main raw material gross weight in the composition of raw materials: by the mineralizer 2.0% that manganese powder and potassium felspar sand form by 1: 1 mixed, mineralizer is broken into the particle of particle diameter less than 0.088mm, and milk of lime 8.0%, its proportion are 1.25g/cm
3, paper pulp 1.0%, its proportion are 1.21g/cm
3, PH is 4;
Powder, fine powder and residual silica brick in silica meal, the silica are added in wet the stone roller, adding mineralizer again did mixed 4 minutes, add milk of lime then, after rolling 11 minutes, add paper pulp again, it is even to pug to mix, and goes out to grind after the screening of 3 eye mesh screens, the moulding base, milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 4:
7.63m coke oven silica brick is represented with weight percent, contains silica meal 28% in the composition of raw materials, powder 43% in the silica, 18% fine powder and residual silica brick 11% that silica by 50% and 50% residual silica brick constitute, SiO in the above-mentioned silica
2Content is not less than 97.5%, when coke oven of the present invention when putting into operation first, described residual silica brick also can be the residual silica brick that other type of furnace is produced, described silica meal is made of three parts, wherein the silica of particle size range between 1-3mm accounts for 65%, particle size range accounts for 34% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 1%; Powder is made of three parts in the described silica, and wherein the silica of particle size range between 1-3mm accounts for 1%, and particle size range accounts for 65% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 34%; Described fine powder is made of two portions, and wherein particle size range accounts for 8% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 92%; Described residual silica brick is made of three parts, and wherein the residual silica brick of particle size range between 1-3mm accounts for 2%, and particle size range accounts for 74% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 24%; Silica in described silica meal, the silica in powder and the fine powder all selects for use five silica fragmentations to form; Also comprise the following auxiliary material that accounts for above-mentioned main raw material gross weight in the composition of raw materials: by the mineralizer 1.95% that manganese powder and potassium felspar sand form by 1: 1 mixed, mineralizer is broken into the particle of particle diameter less than 0.088mm, and milk of lime 7.55%, its proportion are 1.26g/cm
3, paper pulp 0.95%, its proportion are 1.22g/cm
3, PH is 5;
Powder, fine powder and residual silica brick in silica meal, the silica are added in wet the stone roller, adding mineralizer again did mixed 4 minutes, add milk of lime then, after rolling 14 minutes, add paper pulp again, it is even to pug to mix, and goes out to grind after the screening of 3 eye mesh screens, the moulding base, milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 5:
7.63m coke oven silica brick is represented with weight percent, contains silica meal 33% in the composition of raw materials, powder 42% in the silica, 11% fine powder and residual silica brick 14% that silica by 50% and 50% residual silica brick constitute, SiO in the above-mentioned silica
2Content is not less than 97.5%, described residual silica brick is the residual silica brick that coke oven of the present invention is produced, described silica meal is made of three parts, wherein the silica of particle size range between 1-3mm accounts for 71%, particle size range accounts for 28% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 1%; Powder is made of three parts in the described silica, and wherein the silica of particle size range between 1-3mm accounts for 1%, and particle size range accounts for 71% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 28%; Described fine powder is made of two portions, and wherein particle size range accounts for 12% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 88%; Described residual silica brick is made of three parts, and wherein the residual silica brick of particle size range between 1-3mm accounts for 2%, and particle size range accounts for 64% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 34%; Silica in described silica meal, the silica in powder and the fine powder all selects for use five silica fragmentations to form; Also comprise the following auxiliary material that accounts for above-mentioned main raw material gross weight in the composition of raw materials: by the mineralizer 2.05% that manganese powder and potassium felspar sand form by 1: 1 mixed, mineralizer is broken into the particle of particle diameter less than 0.088mm, and milk of lime 8.3%, its proportion are 1.26g/cm
3, paper pulp 1.05%, its proportion are 1.24g/cm
3, PH is 4;
Powder, fine powder and residual silica brick in silica meal, the silica are added in wet the stone roller, adding mineralizer again did mixed 5 minutes, add milk of lime then, rolled 13 minutes, add paper pulp again, it is even to pug to mix, and goes out to grind after the screening of 3 eye mesh screens, the moulding base, milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Claims (5)
1. 7.63m coke oven silica brick, it is characterized in that: represent with weight percent, contain silica meal 25-35% in the composition of raw materials, powder 41-47% in the silica, fine powder and the residual silica brick 10-20% of the 10-20% that silica by 50% and 50% residual silica brick constitute, SiO in the above-mentioned silica
2Content is not less than 97.5%,
Described silica meal is made of three parts, and wherein the silica of particle size range between 1-3mm accounts for 64-74%, and particle size range accounts for 24-34% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 1-2%;
Powder is made of three parts in the described silica, and wherein the silica of particle size range between 1-3mm accounts for 1-2%, and particle size range accounts for 64-74% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 24-34%;
Described fine powder is made of two portions, and wherein particle size range accounts for 5-15% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 85-95%;
Described residual silica brick is made of three parts, and wherein the residual silica brick of particle size range between 1-3mm accounts for 1-2%, and particle size range accounts for 64-74% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 24-34%;
Also comprise the following auxiliary material that accounts for above-mentioned main raw material gross weight in the composition of raw materials: by the mineralizer 1.9-2.1% that manganese powder and potassium felspar sand form by 1: 1 mixed, milk of lime 7.5-8.5%, its proportion are 1.24-1.28g/cm
3, paper pulp 0.9-1.1%, its proportion are 1.20-1.24g/cm
3, PH is 4-5;
Powder in silica meal, the silica, fine powder and residual silica brick are added in wet the stone roller, 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 goes out to grind the moulding base.
2. 7.63m coke oven silica brick according to claim 1 is characterized in that the silica in powder in described silica meal, the silica and the fine powder all selects for use five silica fragmentations to form.
3. 7.63m coke oven silica brick according to claim 1 and 2 is characterized in that filtering through double-deck 22 eye mesh screens before described milk of lime, paper pulp add wet the stone roller.
4. 7.63m coke oven silica brick according to claim 1 and 2 is characterized in that the described uniform pug that mixes is through 3 eye mesh screens screening aftershaping.
5. 7.63m coke oven silica brick according to claim 1 and 2 is characterized in that described mineralizer is broken into the particle of particle diameter less than 0.088mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100624715A CN100500619C (en) | 2007-07-18 | 2007-07-18 | Silicon brick for 7.63-meter coke oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100624715A CN100500619C (en) | 2007-07-18 | 2007-07-18 | Silicon brick for 7.63-meter coke oven |
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| CN101117292A true CN101117292A (en) | 2008-02-06 |
| CN100500619C CN100500619C (en) | 2009-06-17 |
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