CN102633509A - Special sealant for silicon carbide synthesis furnace - Google Patents
Special sealant for silicon carbide synthesis furnace Download PDFInfo
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- CN102633509A CN102633509A CN201210068557XA CN201210068557A CN102633509A CN 102633509 A CN102633509 A CN 102633509A CN 201210068557X A CN201210068557X A CN 201210068557XA CN 201210068557 A CN201210068557 A CN 201210068557A CN 102633509 A CN102633509 A CN 102633509A
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Abstract
The invention discloses a special sealant for a silicon carbide synthesis furnace, which comprises, by weight, 55-73 parts of silicon carbide, 5-8 parts of silicon dioxide, 8-20 parts of liquid water glass and 8-20 parts of phosphoric acid. Before use, the liquid water glass and the phosphoric acid are evenly mixed with the silicon carbide and silicon carbide powder in proportion, and the mixture is tamped into gaps among graphite electrodes and refractory bricks in the half-dry state. Compared with the prior art, the special sealant for the silicon carbide synthesis furnace takes the bonding property at the normal temperature, at the medium temperature and at the high temperature into consideration, so that expansion of furnace end materials when heated during temperature rise is effectively prevented, the sealant is stripped because of extrusion, maintenance cycle of the synthesis furnace is greatly prolonged, and the service time of a furnace end can be prolonged to 2-3 years.
Description
Technical field
The present invention relates to the special-purpose sealing material of a kind of silit synthetic furnace.
Background technology
Use resistance furnace when silit industry is synthetic, the main body of resistance furnace mainly partly is made up of burner, body of heater etc.Burner comprises reinforced concrete frame and refractory brick marshalling, and the refractory brick marshalling inboard is Graphite Electrodes and cooling water tank, in order to seal and resistant to elevated temperatures needs, generally wants ramming process one deck sealing material between Graphite Electrodes and the refractory brick marshalling.
Traditional sealing material composition is: to be 0.1～0.5mm different with two kinds of＞0.5～2mm material footpath expect that carborundum powder directly and liquid soluble glass mix after, under leather hard, ramming is gone in the space between Graphite Electrodes and the refractory brick marshalling.When the sealing material is built by laying bricks or stones at new burner, have normal temperature strength, can satisfy and build by laying needs.But when in use temperature reached more than 800 ℃, sealing material intensity was very low, in use; Particularly under the electrode and refractory brick marshalling expanded by heating situation of burner, the sealing material is squeezed, and peels off layer by layer; Cause between Graphite Electrodes and the refractory brick marshalling poorly sealed; Furnace high-temperature gas gushes in a large number, causes the Graphite Electrodes oxidation, and then corrodes Graphite Electrodes cooling water case and copper/aluminum electrode plate; Thereby i.e. damage in general 3～5 months and must repairing, cause maintenance cost to increase and the decline of quality product.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can at high temperature also can keep higher-strength, especially when being higher than 800 ℃, still can keep higher-strength, and then prolong the special-purpose sealing material of silit synthetic furnace in life-span of the main body, particularly burner of silit joint resistance stove.
Special-purpose sealing material of the present invention is made up of following composition by weight: 55～73 parts in silit, 5～8 parts of silicon-dioxide, 8～20 parts of liquid soluble glass, 8～20 parts of phosphoric acid.
Above-mentioned special use sealing material production process is following: silit pulverized and screening, and＞0.5～2mm accounts for 40～50 parts, accounts for 15～23 parts below the 0.5mm; Silicon dioxide powder is≤powdery of 0.01mm; Before use liquid soluble glass and phosphoric acid and above-mentioned silit and SiO 2 powder are mixed in proportion, under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
As preferably, the screening of above-mentioned carborundum powder is preferably:＞0.5～2mm accounts for 40～50 parts, and＞0.007mm～0.5mm accounts for 10～13 parts, accounts for 5～10 parts below the 0.007mm.
Compared with prior art, the special-purpose sealing material of silit synthetic furnace of the present invention has been considered the bonding properties under normal temperature, middle temperature, the high-temperature condition, and normal temperature strength is produced by the water glass wedding agent; 800 ℃～1300 ℃ medium temperature intensity is produced by the phosphoric acid wedding agent; More than 1300 ℃, the silicon-dioxide ultrafine powder produces high-temp high-viscosity viscous mutually with silicon carbide ultrafine powder, plays tenacious bond and buffering effect; Thereby effectively prevented expanded by heating in burner material temperature-rise period; The sealing material peels off because of extruding, has prolonged the maintenance cycle of synthetic furnace greatly, and particularly burner can extend to 2～3 years duration of service.
Embodiment
Embodiment 1: get＞40 parts of 0.5～2mm carborundum powders 20 parts of the carborundum powders below the 0.5mm by weight; 5 parts of≤0.01mm silicon-dioxide are got 6 parts of 10 parts of liquid soluble glass and phosphatase 11s before use, mix in proportion with above-mentioned silit and SiO 2 powder, and under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 2: get＞50 parts of 0.5～2mm carborundum powders 15 parts of the carborundum powders below the 0.5mm by weight; 5 parts of≤0.01mm silicon-dioxide are got 5 parts of 15 parts of liquid soluble glass and phosphatase 11s before use, mix in proportion with above-mentioned silit and SiO 2 powder, and under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 3: get＞42 parts of 0.5～2mm carborundum powders 18 parts of the carborundum powders below the 0.5mm by weight; 6 parts of≤0.01mm silicon-dioxide are got 2 parts of 20 parts of liquid soluble glass and phosphatase 11s before use, mix in proportion with above-mentioned silit and SiO 2 powder, and under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 4: get＞47 parts of 0.5～2mm carborundum powders 23 parts of the carborundum powders below the 0.5mm by weight; 7 parts of≤0.01mm silicon-dioxide are got 8 parts of 12 parts of liquid soluble glass and phosphatase 11s before use, mix in proportion with above-mentioned silit and SiO 2 powder, and under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 5: get＞48 parts of 0.5～2mm carborundum powders 10 parts of the carborundum powders below 10 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 5 parts of≤0.01mm silicon-dioxide; Get 8 parts of liquid soluble glass before use, 20 parts of phosphoric acid mix in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 6: get＞40 parts of 0.5～2mm carborundum powders 5 parts of the carborundum powders below 12 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 6 parts of≤0.01mm silicon-dioxide; Get 15 parts of liquid soluble glass before use, 0 part of phosphatase 11 mixes in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 7: get＞45 parts of 0.5～2mm carborundum powders 7 parts of the carborundum powders below 13 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 7 parts of≤0.01mm silicon-dioxide; Get 18 parts of liquid soluble glass before use, 0 part of phosphatase 11 mixes in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 8: get＞50 parts of 0.5～2mm carborundum powders 10 parts of the carborundum powders below 10 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 8 parts of≤0.01mm silicon-dioxide; Get 20 parts of liquid soluble glass before use, 0 part of phosphatase 11 mixes in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 9: get＞46 parts of 0.5～2mm carborundum powders 6 parts of the carborundum powders below 12 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 6 parts of≤0.01mm silicon-dioxide; Get 14 parts of liquid soluble glass before use, 8 parts of phosphoric acid mix in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 10: get＞47 parts of 0.5～2mm carborundum powders 10 parts of the carborundum powders below 13 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 8 parts of≤0.01mm silicon-dioxide; Get 15 parts of liquid soluble glass before use, 5 parts of phosphatase 11s mix in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 11: get＞40 parts of 0.5～2mm carborundum powders 10 parts of the carborundum powders below 10 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 8 parts of≤0.01mm silicon-dioxide; Get 20 parts of liquid soluble glass before use, 8 parts of phosphoric acid mix in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 12: get＞45 parts of 0.5～2mm carborundum powders 5 parts of the carborundum powders below 10 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 6 parts of≤0.01mm silicon-dioxide; Get 9 parts of liquid soluble glass before use, 1 part of phosphatase 11 mixes in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 13: get＞46 parts of 0.5～2mm carborundum powders 8 parts of the carborundum powders below 12 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 5 parts of≤0.01mm silicon-dioxide; Get 10 parts of liquid soluble glass before use, 0 part of phosphatase 11 mixes in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 14: get＞50 parts of 0.5～2mm carborundum powders 10 parts of the carborundum powders below 10 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 6 parts of≤0.01mm silicon-dioxide; Get 18 parts of liquid soluble glass before use, 2 parts of phosphatase 11s mix in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Embodiment 15: get＞40 parts of 0.5～2mm carborundum powders 7 parts of the carborundum powders below 13 parts of the carborundum powders of＞0.007mm～0.5mm, 0.007mm by weight; 8 parts of≤0.01mm silicon-dioxide; Get 10 parts of liquid soluble glass before use, 20 parts of phosphoric acid mix in proportion with above-mentioned silit and SiO 2 powder; Under leather hard, ramming goes in the space between Graphite Electrodes and the refractory brick to get final product.
Claims (2)
1. the special-purpose sealing material of silit synthetic furnace is characterized in that being made up of following composition by weight: 55～73 parts in silit, 5～8 parts of silicon-dioxide, 8～20 parts of liquid soluble glass, 8～20 parts of phosphoric acid;
Its production process is following: silit pulverized and screening, and＞0.5～2mm accounts for 40～50 parts, accounts for 15～23 parts below the 0.5mm; Said silicon dioxide powder is≤powdery of 0.01mm; Before use liquid soluble glass and phosphoric acid and above-mentioned silit and SiO 2 powder are mixed in proportion and can use.
2. the special-purpose sealing material of silit synthetic furnace according to claim 1, it is characterized in that the screening of said carborundum powder is:＞0.5～2mm accounts for 40～50 parts, and＞0.007mm～0.5mm accounts for 10～13 parts, and what 0.007mm was following accounts for 5～10 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210068557 CN102633509B (en) | 2012-03-15 | 2012-03-15 | Special sealant for silicon carbide synthesis furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210068557 CN102633509B (en) | 2012-03-15 | 2012-03-15 | Special sealant for silicon carbide synthesis furnace |
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| CN102633509A true CN102633509A (en) | 2012-08-15 |
| CN102633509B CN102633509B (en) | 2013-12-18 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099018A (en) * | 1993-08-14 | 1995-02-22 | 湖南省新化县电子材料厂 | Silicon-carborundum refractory material |
| CN101348378A (en) * | 2008-08-29 | 2009-01-21 | 武汉钢铁(集团)公司 | Sol combined fire resistant repair material and repair method |
| CN101544504A (en) * | 2009-05-08 | 2009-09-30 | 巩义市金岭耐火材料有限公司 | Phosphate-bonded aluminum silicon carbide brick and preparation method thereof |
-
2012
- 2012-03-15 CN CN 201210068557 patent/CN102633509B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099018A (en) * | 1993-08-14 | 1995-02-22 | 湖南省新化县电子材料厂 | Silicon-carborundum refractory material |
| CN101348378A (en) * | 2008-08-29 | 2009-01-21 | 武汉钢铁(集团)公司 | Sol combined fire resistant repair material and repair method |
| CN101544504A (en) * | 2009-05-08 | 2009-09-30 | 巩义市金岭耐火材料有限公司 | Phosphate-bonded aluminum silicon carbide brick and preparation method thereof |
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| CN102633509B (en) | 2013-12-18 |
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Address after: 832012 the Xinjiang Uygur Autonomous Region Shihezi City Bei Quan Zhen Qing Quan Ji Applicant after: Xinjiang Yifeng West Ceramic Material Technology Co., Ltd. Address before: 832012 the Xinjiang Uygur Autonomous Region Shihezi City Bei Quan Zhen Qing Quan Ji Applicant before: Xinjiang Yufeng Photovoltaic Material Technology Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: XINGJIANG YUFENG PHOTOVOLTAIC MATERIALS TECHNOLOGY CO., LTD. TO: XINGJIANG YIFENG WEST CERAMIC MATERIAL TECHNOLOGY CO., LTD. |
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Effective date of registration: 20160525 Address after: The 832000 Xinjiang Shihezi Development Zone, Road No. 17 Patentee after: Shihezi Fengtuo Silicon Material Science and Technology Co., Ltd. Address before: 832012 the Xinjiang Uygur Autonomous Region Shihezi City Bei Quan Zhen Qing Quan Ji Patentee before: Xinjiang Yifeng West Ceramic Material Technology Co., Ltd. |