CN104045359A - Silicon carbide-mullite-andalusite brick applied to transitional zone of cement rotary kiln, and manufacture method thereof - Google Patents
Silicon carbide-mullite-andalusite brick applied to transitional zone of cement rotary kiln, and manufacture method thereof Download PDFInfo
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- CN104045359A CN104045359A CN201410235243.3A CN201410235243A CN104045359A CN 104045359 A CN104045359 A CN 104045359A CN 201410235243 A CN201410235243 A CN 201410235243A CN 104045359 A CN104045359 A CN 104045359A
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Abstract
The invention discloses a silicon carbide-mullite-andalusite brick applied to a transitional zone of a cement rotary kiln, and a manufacture method thereof. The brick mainly comprises the following compositions: plastic clay (Guangxi white mud), silicon carbide, nanometer-level silicon carbide, andalusite, bauxitic clay and the like. The manufacture method of the silicon carbide-mullite-andalusite brick comprises: performing film-forming processing, performing high-temperature sintering at 500-700 DEG C for 1-3 h, heating to 1500 DEG C and sintering for 4-6 h, so as to prepare the brick. According to the technical scheme, the silicon carbide-mullite-andalusite brick is improved in high-temperature resistance and wear resistance and prolonged in service life compared with a conventional silicon carbide-mullite-andalusite brick in the market.
Description
Technical field
The present invention relates to technical field of refractory materials, relate in particular to a kind of silicon mullite red brick and manufacture method thereof that is applied to cement rotary kiln transition belt.
Background technology
Because cement rotary kiln transition belt regional temperature is high.Conventionally reach 1600 DEG C of left and right, and temperature variation is frequent, becomes the region that kiln weight stresses is concentrated the most, cause kliner coating to be difficult for being firmly linked with, in time, hangs while falling, and fire-resistant kiln lining is often directly exposed to the open air in high temperature gas flow.Rear transitional zone temperature of charge is lower, and the large stretch of obscission of unsettled kliner coating often appears in secondary kliner coating intensity and all lower with rotary kiln wall bonding strength, becomes the core of the large egg of knot in rotary kiln.Refractory materials is exposed in high temperature gas flow with naked state not only time, bears larger thermal load and temperature variation in a big way, also frequently bears the washing away of grog particle with some strength with naked state.Refractory materials preparation should be considered higher high refractoriness, higher hot strength, good thermal shock resistance.Front transitional zone, has strongly washing away of grog particle, and temperature fluctuation amplitude, frequency are far above other regions.This region refractory materials will possess outside high refractoriness, high refractoriness under load, lay special stress on thermal shock resistance.
For meeting cement rotary kiln transition belt high-temperature stable, thermal shock resistance, low creep property, height is fire-resistant, the requirement of high resistance attriting performance, domesticly do a large amount of research work, wherein refractory brick patent (CN1944345A) has been announced a kind of silicon mullite red brick and preparation method thereof, this product is used widely at present at home, but the practical life of this product is generally in 1 year, now cannot meet the work-ing life that manufacture of cement producer extends refractory brick, reduce production costs, the requirement of increasing economic efficiency.
Summary of the invention
The technical problem existing based on background technology, the present invention proposes a kind of novel silicon mullite red brick, has improved the high temperature resistant of original silicon mullite red brick and anti-wear performance, has extended its work-ing life.
The present invention also provides the manufacture method of above-mentioned silicon mullite red brick.
1, the present invention proposes a kind of cement kiln rotary kiln silicon mullite red brick, and it comprises the component of following weight percent:
2, each raw material mixes according to the above ratio, on 630T friction brick pressing machine, become adobe, after dry kiln is dried, the adobe of having dried is put into after pre-configured film forming liquid dip-coating, 500-700 DEG C of high temperature sintering 1-3 hour, after be warming up to 1500 DEG C of sintering 4-6 hour one-tenth brick.
3, the proportioning of film forming liquid comprises:
4, the preparation method of film forming liquid is: tetraethoxy, water, acetone and formic acid are mixed, and prehydrolysis 4-6 hour under 40-60 DEG C of condition, then add methyl silicon resin and acetic acid, obtain film forming liquid.
This programme is than the usefulness of traditional scheme: because nanometer silicon carbide purity is high, particle diameter is little; add nanometer silicon carbide can improve the resistance to elevated temperatures of silicon mullite red brick; can strengthen simultaneously with film forming liquid in the Intermolecular Forces of silicon; be conducive to form on silicon mullite red brick surface the Inorganic Silicon Compound protective layer of one deck densification; greatly improve the high temperature resistant of original silicon mullite red brick and anti-wear performance, extended its work-ing life.
Embodiment
Embodiment 1:
A kind of silicon mullite red brick that the present invention proposes, comprises the component of following weight percent:
Each raw material mixes according to the above ratio, on 630T friction brick pressing machine, becomes adobe, after dry kiln is dried, the adobe of having dried is put into after pre-configured film forming liquid dip-coating, 600 DEG C of high temperature sinterings 3 hours, after be warming up to 5 hours one-tenth bricks of 1500 DEG C of sintering.
The proportioning of film forming liquid comprises:
The preparation method of film forming liquid is: tetraethoxy, water, acetone and formic acid mixed, and under 60 DEG C of conditions, prehydrolysis 4 hours, then add methyl silicon resin and acetic acid, obtain film forming liquid.
Embodiment 2:
A kind of silicon mullite red brick that the present invention proposes, comprises the component of following weight percent:
Each raw material mixes according to the above ratio, on 630T friction brick pressing machine, becomes adobe, after dry kiln is dried, the adobe of having dried is put into after pre-configured film forming liquid dip-coating, 500 DEG C of high temperature sinterings 1 hour, after be warming up to 6 hours one-tenth bricks of 1500 DEG C of sintering.
The proportioning of film forming liquid comprises:
The preparation method of film forming liquid is: tetraethoxy, water, acetone and formic acid mixed, and under 60 DEG C of conditions, prehydrolysis 4 hours, then add methyl silicon resin and acetic acid, obtain film forming liquid.
Embodiment 3:
A kind of silicon mullite red brick that the present invention proposes, comprises the component of following weight percent:
Each raw material mixes according to the above ratio, on 630T friction brick pressing machine, becomes adobe, after dry kiln is dried, the adobe of having dried is put into after pre-configured film forming liquid dip-coating, 700 DEG C of high temperature sinterings 1 hour, after be warming up to 4 hours one-tenth bricks of 1500 DEG C of sintering.
The proportioning of film forming liquid comprises:
The preparation method of film forming liquid is: tetraethoxy, water, acetone and formic acid mixed, and under 50 DEG C of conditions, prehydrolysis 5 hours, then add methyl silicon resin and acetic acid, obtain film forming liquid.
Embodiment 4:
A kind of silicon mullite red brick that the present invention proposes, comprises the component of following weight percent:
Each raw material mixes according to the above ratio, on 630T friction brick pressing machine, become adobe, after dry kiln is dried, the adobe of having dried is put into after pre-configured film forming liquid dip-coating, 600 DEG C of high temperature sinterings 2.5 hours, after be warming up to 5 hours one-tenth bricks of 1500 DEG C of sintering.
The proportioning of film forming liquid comprises:
The preparation method of film forming liquid is: tetraethoxy, water, acetone and formic acid mixed, and under 50 DEG C of conditions, prehydrolysis 6 hours, then add methyl silicon resin and acetic acid, obtain film forming liquid.
Embodiment 1-4 is detected:
This detects data only for above-mentioned detection sample.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. a silicon mullite red brick that is applied to cement kiln rotary kiln transition belt, is characterized in that, the weight percent of its raw material comprises:
Soft clay (Guangxi white clay) 4-7%
Above particle diameter≤100 of silicon carbide purity 95% micron 7-15%
Above particle diameter≤1 of silicon carbide purity 95% millimeter 7-15%
Above particle diameter≤100 of silicon carbide purity 98% nanometer 0.01-0.1%
The above order granularity 200 order 6-12% of andaluzite purity 55%
Above particle diameter≤1 of bauxitic clay purity 85% millimeter 6-12%
Bauxitic clay purity more than 85% 1 millimeter of < particle diameter≤3 millimeter 25-35%
Bauxitic clay purity more than 85% 3 millimeters of < particle diameter≤5 millimeter 20-30%.
2. the manufacture method of the silicon mullite red brick that is applied to cement rotary kiln transition belt as claimed in claim 1, it is characterized in that, its preparation process is: each raw material is mixed in proportion after stirring, on 630T friction brick pressing machine, become adobe, after dry kiln is dried, the adobe of having dried is put into after pre-configured film forming liquid dip-coating, 500-700 DEG C of sintering 1-3 hour, after be warming up to 1500 DEG C of sintering 4-6 hour and obtain cement kiln rotary kiln transition belt silicon mullite red brick and become brick, the ratio of described film forming liquid is:
Tetraethoxy 1-3mol,
Formic acid 0.01-0.1mol,
Water 1-6mol,
Acetone 3-6mol
Acetic acid 3-5mol
The 50%-120% of methyl silicon resin tetraethoxy quality.
3. the manufacture method of the silicon mullite red brick that is applied to cement rotary kiln transition belt as claimed in claim 1, it is characterized in that, the preparation process of described film forming liquid is: tetraethoxy, water, acetone and formic acid are mixed, prehydrolysis 4-6 hour under 40-60 DEG C of condition, after adding again methyl silicon resin and acetic acid to stir, obtain film forming liquid.
4. the silicon mullite red brick that is applied to cement rotary kiln transition belt as claimed in claim 1, is characterized in that, each composition weight percent is:
Soft clay (Guangxi white clay) 4.9%
Above particle diameter≤100 of silicon carbide purity 95% micron 10%
Above particle diameter≤1 of silicon carbide purity 95% millimeter 10%
Above particle diameter≤100 of silicon carbide purity 98% nanometer 0.1%
The above order of andaluzite purity 55% granularity-200 order 10%
Above particle diameter≤1 of bauxitic clay purity 85% millimeter 10%
More than 85% 1 millimeter of < particle diameter≤3 of bauxitic clay purity millimeter 30%
More than 85% 3 millimeters of < particle diameter≤5 of bauxitic clay purity millimeter 25%.
5. the manufacture method of the silicon mullite red brick that is applied to cement rotary kiln transition belt as claimed in claim 4, it is characterized in that, after each raw material is mixed in proportion, on 630T friction brick pressing machine, become adobe, after dry kiln is dried, the adobe of having dried is put into after pre-configured film forming liquid dip-coating, 600 DEG C of high temperature sinterings 3 hours, after be warming up to 5 hours one-tenth bricks of 1500 DEG C of sintering.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235243.3A CN104045359B (en) | 2014-05-29 | 2014-05-29 | A kind of silicon mullite red brick and manufacture method thereof being applied to cement rotary kiln transition belt |
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| CN201410235243.3A CN104045359B (en) | 2014-05-29 | 2014-05-29 | A kind of silicon mullite red brick and manufacture method thereof being applied to cement rotary kiln transition belt |
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| CN104045359A true CN104045359A (en) | 2014-09-17 |
| CN104045359B CN104045359B (en) | 2016-02-03 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944345A (en) * | 2006-10-27 | 2007-04-11 | 江苏君耀耐磨耐火材料有限公司 | Silicon mullite red brick for large cement kiln and its producing method |
| CN102115335A (en) * | 2009-12-30 | 2011-07-06 | 巩义通达中原耐火技术有限公司 | Novel abrasion resistant silicon-mullite-nitrogen brick for transition zones of rotary cement kiln |
-
2014
- 2014-05-29 CN CN201410235243.3A patent/CN104045359B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1944345A (en) * | 2006-10-27 | 2007-04-11 | 江苏君耀耐磨耐火材料有限公司 | Silicon mullite red brick for large cement kiln and its producing method |
| CN102115335A (en) * | 2009-12-30 | 2011-07-06 | 巩义通达中原耐火技术有限公司 | Novel abrasion resistant silicon-mullite-nitrogen brick for transition zones of rotary cement kiln |
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| CN104045359B (en) | 2016-02-03 |
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Address after: 313100 Meishan Town Industrial Park, Changxing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang ally Refractories Co.,Ltd. Address before: 313000 Meishan Town Industrial Park (Xin'an Village), Changxing County, Huzhou City, Zhejiang Province Patentee before: CHANGXING MENGYOU REFRACTORIES Co.,Ltd. |
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