CN100457687C - Silicon brick for 7-meter coke oven - Google Patents
Silicon brick for 7-meter coke oven Download PDFInfo
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- CN100457687C CN100457687C CNB2007100624842A CN200710062484A CN100457687C CN 100457687 C CN100457687 C CN 100457687C CN B2007100624842 A CNB2007100624842 A CN B2007100624842A CN 200710062484 A CN200710062484 A CN 200710062484A CN 100457687 C CN100457687 C CN 100457687C
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Abstract
The invention relates to the fire resistant material technical field, in particular to a silica brick of 7m for coke oven, which solves the problem of unreasonable distribution of the fineness and size of the particles of raw materials caused by the differences in quality and selection of the raw materials. The formulation of the raw materials comprises 25 to 35 percent of silex cribble powder, 41 to 47 percent of silex medium powder, 10 to 20 percent of fine powder consisting of 50 percent of silex and 50 percent of incomplete silex brick, 10 to 20 percent of incomplete silex brick, accessories which comprise 1.9 to 2.1 percent of mineralizer comprising manganese powder, iron phosphorus powder and potassium feldspar according to the proportion of 0.5 to 0.5 to1, 7.5 to 8.5 percent of line cream and 0.9 to 1.1 percent of pulp. The physics and chemistry index adopted by the formulation of the invention is higher than the national standard. The invention has the advantages of wide raw material source, reasonable distribution of fineness of aggregate and grain size. The produced silica brick is completely in accordance with requirements of design of brick shape, complexity and outside measurement of the coke oven brick and adaptability to the requirement of large-scale production of coke oven .
Description
Technical field
The present invention relates to technical field of refractory materials, be specially a kind of 7m 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 7m, 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 7m coke oven owing to the refractory raw material quality, select for use and defective such as there are differences, feed particles fineness, distribution of sizes are unreasonable, makes the 7m large capacity coke oven often not reach national standard with the physical and chemical index of silica brick with silica brick.
Summary of the invention
The present invention for solve existing 7m coke oven with silica brick owing to the refractory raw material quality, select for use and defective such as there are differences, feed particles fineness, distribution of sizes are unreasonable, often do not reach national standard, a kind of 7m coke oven silica brick is provided.
The present invention adopts following technical scheme to realize: 7m coke oven silica brick, represent with weight percent, composition of raw materials is made of main raw material and auxiliary material, wherein main raw material is by the silica meal 25-35% that accounts for the main raw material gross weight, powder 41-47% in the silica, fine powder 10-20% and residual silica brick 10-20% that silica by 50% and 50% residual silica brick constitute form SiO in the above-mentioned silica
2Content is not less than 97.5%; 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 7m 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 7m 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, iron scale powder and potassium felspar sand form by 0.5: 0.5: 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 7m coke oven of prescription of the present invention and making method to compare with the every physical and chemical index and the national standard of silica brick, as shown in the table,
| Project | Standard value | Average measured value of the present invention |
| SiO 2，％ | ≥94 | ≥95 |
| Fe 2O 3，％ | ≤1.2 | ≤0.9 |
| 0.2MPa load softening point begin temperature (℃) | ≥1650 | ≥1650 |
| Heavily burn line and change % (1450 ℃ * 2) | 0～+0.15 | 0～+0.1 |
| Apparent porosity, % | ≤21 | ≤20.5 |
| Volume density, g/cm 3 | 1.85 | 1.86 |
| Cold crushing strength, MPa | ≥40 | ≥50 |
| True density, g/cm 3 | ≤2.33 | ≤2.31 |
| Coefficient of thermal expansion, %, 1000 ℃ | ≤1.25 | ≤1.25 |
| Tridymite, % | ≥65 | ≥67 |
| Residual quartz, % | On average≤0.5 | ＜1 |
| Refractoriness, % | 1670 | ≥1690 |
As seen from the above table, adopt the physical and chemical index of the silica brick that prescription of the present invention makes all to be better than national standard.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:
7m coke oven silica brick, represent with weight percent, composition of raw materials is made of main raw material and auxiliary material, wherein main raw material is by the silica meal 33% that accounts for the main raw material gross weight, powder 42% in the silica, fine powder 11% and residual silica brick 14% that silica by 50% and 50% residual silica brick constitute are formed 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 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 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 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, wherein the residual silica brick of particle size range between 1-3mm accounts for 2%, particle size range accounts for 64% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 34%, and the 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, iron scale powder and potassium felspar sand form by 0.5: 0.5: 1 mixed, milk of lime 8.2%, its proportion are 1.27g/cm
3, paper pulp 1.1%, its proportion are 1.20g/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, mineralizer is broken into the particle of particle diameter less than 0.088mm, add milk of lime then, after rolling 13 minutes, add paper pulp again, it is even to pug to mix, and after the screening of 3 eye mesh screens, go out to grind the moulding base.Milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 2:
7m coke oven silica brick, represent with weight percent, composition of raw materials is made of main raw material and auxiliary material, wherein main raw material is by the silica meal 28% that accounts for the main raw material gross weight, powder 43% in the silica, fine powder 18% and residual silica brick 11% that silica by 50% and 50% residual silica brick constitute are formed 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 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 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, wherein the residual silica brick of particle size range between 1-3mm accounts for 2%, particle size range accounts for 68% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 30%, and the 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, iron scale powder and potassium felspar sand form by 0.5: 0.5: 1 mixed, milk of lime 8.0%, its proportion are 1.26g/cm
3, paper pulp 1.05%, its proportion are 1.22g/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, mineralizer is broken into the particle of particle diameter less than 0.088mm, add milk of lime then, after rolling 11 minutes, add paper pulp again, it is even to pug to mix, and after the screening of 3 eye mesh screens, go out to grind the moulding base.Milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 3:
7m coke oven silica brick, represent with weight percent, composition of raw materials is made of main raw material and auxiliary material, wherein main raw material is by the silica meal 30% that accounts for the main raw material gross weight, powder 45% in the silica, fine powder 15% and residual silica brick 10% that silica by 50% and 50% residual silica brick constitute are formed 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 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 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 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, wherein the residual silica brick of particle size range between 1-3mm accounts for 1%, particle size range accounts for 71% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 28%, and the 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, iron scale powder and potassium felspar sand form by 0.5: 0.5: 1 mixed, milk of lime 7.6%, its proportion are 1.25g/cm
3, paper pulp 0.95%, its proportion are 1.21g/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, mineralizer is broken into the particle of particle diameter less than 0.088mm, add milk of lime then, after rolling 12 minutes, add paper pulp again, it is even to pug to mix, and after the screening of 3 eye mesh screens, go out to grind the moulding base.Milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 4:
7m coke oven silica brick, represent with weight percent, composition of raw materials is made of main raw material and auxiliary material, wherein main raw material is by the silica meal 35% that accounts for the main raw material gross weight, powder 41% in the silica, fine powder 14% and residual silica brick 10% that silica by 50% and 50% residual silica brick constitute are formed 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 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 1%, and particle size range accounts for 72% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 27%; 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, wherein the residual silica brick of particle size range between 1-3mm accounts for 1%, particle size range accounts for 69% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 30%, and the 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, iron scale powder and potassium felspar sand form by 0.5: 0.5: 1 mixed, 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, mineralizer is broken into the particle of particle diameter less than 0.088mm, add milk of lime then, after rolling 15 minutes, add paper pulp again, it is even to pug to mix, and after the screening of 3 eye mesh screens, go out to grind the moulding base.Milk of lime, paper pulp filter through double-deck 22 eye mesh screens before adding wet the stone roller.
Embodiment 5:
7m coke oven silica brick, represent with weight percent, composition of raw materials is made of main raw material and auxiliary material, wherein main raw material is by the silica meal 25% that accounts for the main raw material gross weight, powder 47% in the silica, fine powder 10% and residual silica brick 18% that silica by 50% and 50% residual silica brick constitute are formed 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 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 1%, and particle size range accounts for 66% between 1-0.088mm, and the particle of particle size range＜0.088mm accounts for 33%; 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, wherein the residual silica brick of particle size range between 1-3mm accounts for 2%, particle size range accounts for 73% between 1-0.088mm, the particle of particle size range＜0.088mm accounts for 25%, and the 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, iron scale powder and potassium felspar sand form by 0.5: 0.5: 1 mixed, 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 4 minutes, mineralizer is broken into the particle of particle diameter less than 0.088mm, add milk of lime then, after rolling 10 minutes, add paper pulp again, it is even to pug to mix, and after the screening of 3 eye mesh screens, go out to grind 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, a kind of 7m coke oven silica brick, it is characterized in that: represent with weight percent, composition of raw materials is made of main raw material and auxiliary material, wherein main raw material is by the silica meal 25-35% that accounts for the main raw material gross weight, powder 41-47% in the silica, fine powder 10-20% and residual silica brick 10-20% that silica by 50% and 50% residual silica brick constitute form 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, iron scale powder and potassium felspar sand form by 0.5: 0.5: 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.
2,7m 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.
3,7m 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.
4,7m 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.
5,7m 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 |
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| CNB2007100624842A CN100457687C (en) | 2007-07-18 | 2007-07-18 | Silicon brick for 7-meter coke oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100624842A CN100457687C (en) | 2007-07-18 | 2007-07-18 | Silicon brick for 7-meter coke oven |
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| CN100457687C true CN100457687C (en) | 2009-02-04 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102557684A (en) * | 2011-12-26 | 2012-07-11 | 山西盂县西小坪耐火材料有限公司 | Silica brick for coke oven |
| CN105036779B (en) * | 2015-09-10 | 2017-08-25 | 中钢集团耐火材料有限公司 | A kind of preparation method of hot-blast stove silica brick |
| 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 |
| 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 |
| 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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| CN1683271A (en) * | 2004-04-14 | 2005-10-19 | 宝山钢铁股份有限公司 | Refractory dry powder seal material for coke furnace |
| CN1792952A (en) * | 2005-11-18 | 2006-06-28 | 郑州华宇耐火材料有限公司 | Composite silicon brick |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1683271A (en) * | 2004-04-14 | 2005-10-19 | 宝山钢铁股份有限公司 | Refractory dry powder seal material for coke furnace |
| CN1792952A (en) * | 2005-11-18 | 2006-06-28 | 郑州华宇耐火材料有限公司 | Composite silicon brick |
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