CN107602135A - A kind of preparation method of mullite funnel brick - Google Patents
A kind of preparation method of mullite funnel brick Download PDFInfo
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- CN107602135A CN107602135A CN201710822498.3A CN201710822498A CN107602135A CN 107602135 A CN107602135 A CN 107602135A CN 201710822498 A CN201710822498 A CN 201710822498A CN 107602135 A CN107602135 A CN 107602135A
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Abstract
The invention discloses a kind of preparation method of mullite funnel brick, including 1), prepare raw material；2), pug is prepared；3), shaping is with drying；4), burn till.Mullite funnel brick produced by the present invention has extraordinary intensity, and Applicable temperature is high, corrosion-resistant, service life length, solve thes problems, such as to point out in background technology.
Description
Technical field
The present invention relates to fire resisting material field, more particularly to a kind of preparation method of mullite funnel brick.
Background technology
Funnel brick is the protection device for connecting ladle and casting, has and protects not excessive, possibility of reduction oxidation of molten steel etc.
Effect, the quality of funnel brick quality directly affect the quality of casting, and funnel brick intensity at present on the market is poor, holds when in use
The problem of easily cracking.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of preparation method of mullite funnel brick, obtained mullite funnel
Brick has extraordinary intensity, and Applicable temperature is high, corrosion-resistant, service life length, efficiently solves asking of being pointed out in background technology
Topic.
The technical solution adopted by the present invention is：
A kind of preparation method of mullite funnel brick, comprises the following steps：
1) raw material, is prepared：10 parts of the mullite of 5-3mm particles, 10 parts of the mullite of 3-1mm particles, less than 1mm particles
5 parts of mullite, 15 parts of the Brown Alundum of 3-1mm particles, less than 10 parts of the Brown Alundum of 1mm particles, α-Al2O36 parts of micro mist, clay powder
10 parts, 30 parts of the alumina of 5-3mm particles, 4 parts of bonding agent；
2), pug is prepared：First by the mullite of 5-3mm particles, the mullite of 3-1mm particles, 3-1mm Brown Alundum, 5-
The alumina of 3mm particles is all put into planetary kolleroang mixed grind, after mixed grind 20-30 minutes, continues mixed grind after adding 2 parts of bonding agent
7-10 minutes, then add mullite, the Brown Alundum less than 1mm particles, α-Al less than 1mm particles2O3Micro mist, clay powder, 1
Continue mixed grind after part bonding agent, mixed grind releases pug and stands 5-8 hours after 20 minutes, the pug after standing is fed again into planetary
In kolleroang, and add 1 part of bonding agent and carry out secondary mixed grind, the time of secondary mixed grind is 10-15 minutes；
3), shaping is with drying：The pug that step 2) obtains is sent into forcing press adobe is made, adobe is then sent into 100-
10-15 hours are dried in 160 DEG C of hothouse；
4), burn till：The adobe that step 3) obtains is sent into calcining kiln to be burnt till, firing temperature is 1380-1450 DEG C, is protected
The warm time is 4-6 hours.
Preferably, in the composition of the mullite：66% ＜ alundum (Al2O3)s ＜ 77%, di-iron trioxide ＜ 1%, palm fibre
In the composition of corundum：Alundum (Al2O3) ＞ 95.6%.
Preferably, in the composition of the alumina：Al2O3Content be 80-88%, Fe2O3Content be less than 2%, TiO2
≤ 3.0%, refractoriness >=1770 DEG C of the alumina, body is close >=3.0g/cm3, water absorption rate≤3.5%.
Preferably, in the composition of the clay powder：Al2O3Content be 20-33%, Fe2O3Content be less than 1.5%,
Refractoriness >=1670 DEG C of the alumina.
Preferably, burning till in the step 4) is carried out under weak oxide environment, described bonding agent is 25-45%'s
Industrial phosphoric acid.
Beneficial effects of the present invention：
1), alumina reacts mullite in the mullite and corundum, with adobe changed into, Brown Alundum phase in sintering process
Mixing, can greatly improve the intensity of brown funnel brick, and Applicable temperature is higher；
2), funnel brick made from this method, corundum and mullite are mutually more, and eutectic is less, have good anti-erosion energy
Power, and thermal shock resistance；
3), Brown Alundum has higher refractory temperature, and so as to improve the refractory temperature of funnel brick, and wearability is good, anti-
Impact is good, not easy to crack；
4) when, pug is prepared, bonding agent adds in three times, so as to improve the effect of mixed grind so that energy between each raw material
Enough organically combine even closer, using the technique for standing mixed grind again during mixed grind so that will be without tight during secondary mixed grind
The close raw material being combined together carries out secondary mixed grind combination, so as to lift the effect of mixed grind.
Embodiment
The present invention is described in further detail below by specific embodiment.
Embodiment 1
A kind of preparation method of mullite funnel brick, comprises the following steps：
1) raw material, is prepared：10 parts of the mullite of 5-3mm particles, 10 parts of the mullite of 3-1mm particles, less than 1mm particles
5 parts of mullite, 15 parts of the Brown Alundum of 3-1mm particles, less than 10 parts of the Brown Alundum of 1mm particles, α-Al2O36 parts of micro mist, clay powder
10 parts, 30 parts of the alumina of 5-3mm particles, 4 parts of bonding agent；
2), pug is prepared：First by the mullite of 5-3mm particles, the mullite of 3-1mm particles, 3-1mm Brown Alundum, 5-
The alumina of 3mm particles is all put into planetary kolleroang mixed grind, after mixed grind 20-30 minutes, continues mixed grind after adding 2 parts of bonding agent
7-10 minutes, then add mullite, the Brown Alundum less than 1mm particles, α-Al less than 1mm particles2O3Micro mist, clay powder, 1
Continue mixed grind after part bonding agent, mixed grind releases pug and stands 5-8 hours after 20 minutes, the pug after standing is fed again into planetary
In kolleroang, and add 1 part of bonding agent and carry out secondary mixed grind, the time of secondary mixed grind is 10-15 minutes；
3), shaping is with drying：The pug that step 2) obtains is sent into forcing press adobe is made, adobe is then sent into 100-
10-15 hours are dried in 160 DEG C of hothouse；
4), burn till：The adobe that step 3) is obtained is sent into calcining kiln, is burnt till under weak oxide environment, firing temperature
For 1380-1450 DEG C, soaking time is 4-6 hours.
In the composition of the mullite：66% ＜ alundum (Al2O3)s ＜ 77%, di-iron trioxide ＜ 1%, Brown Alundum into
In point：Alundum (Al2O3) ＞ 95.6%.
In the composition of the alumina：Al2O3Content be 80-88%, Fe2O3Content be less than 2%, TiO2≤ 3.0%, institute
State refractoriness >=1770 DEG C of alumina, body is close >=3.0g/cm3, water absorption rate≤3.5%.
In the composition of the clay powder：Al2O3Content be 20-33%, Fe2O3Content be less than 1.5%, the alumina
Refractoriness >=1670 DEG C.
Described bonding agent is 25-45% industrial phosphoric acid.
Claims (5)
1. a kind of preparation method of mullite funnel brick, it is characterised in that comprise the following steps：
1) raw material, is prepared：10 parts of the mullite of 5-3mm particles, 10 parts of the mullite of 3-1mm particles, less than not coming for 1mm particles
5 parts of stone, 15 parts of the Brown Alundum of 3-1mm particles, less than 10 parts of the Brown Alundum of 1mm particles, α-Al2O36 parts of micro mist, 10 parts of clay powder,
30 parts of the alumina of 5-3mm particles, 4 parts of bonding agent；
2), pug is prepared：First by the mullite of 5-3mm particles, the mullite of 3-1mm particles, 3-1mm Brown Alundum, 5-3mm
The alumina of grain is all put into planetary kolleroang mixed grind, after mixed grind 20-30 minutes, continues mixed grind 7-10 after adding 2 parts of bonding agent
Minute, then add mullite, the Brown Alundum less than 1mm particles, the α-Al less than 1mm particles2O3Micro mist, clay powder, 1 part of knot
Continue mixed grind after mixture, mixed grind releases pug and stands 5-8 hours after 20 minutes, the pug after standing is fed again into planetary mixed grind
In machine, and add 1 part of bonding agent and carry out secondary mixed grind, the time of secondary mixed grind is 10-15 minutes；
3), shaping is with drying：The pug that step 2) obtains is sent into forcing press adobe is made, adobe is then sent into 100-160
DEG C hothouse in 10-15 hours are dried；
4), burn till：Adobe that step 3) obtains is sent into calcining kiln to be burnt till, firing temperature is 1380-1450 DEG C, during insulation
Between be 4-6 hours.
A kind of 2. preparation method of mullite funnel brick according to claim 1, it is characterised in that the mullite into
In point：66% ＜ alundum (Al2O3)s ＜ 77%, di-iron trioxide ＜ 1%, in the composition of Brown Alundum：Alundum (Al2O3) ＞
95.6%.
A kind of 3. preparation method of mullite funnel brick according to claim 1, it is characterised in that the composition of the alumina
In：Al2O3Content be 80-88%, Fe2O3Content be less than 2%, TiO2≤ 3.0%, refractoriness >=1770 of the alumina
DEG C, body is close >=3.0g/cm3, water absorption rate≤3.5%.
A kind of 4. preparation method of mullite funnel brick according to claim 1, it is characterised in that the clay powder into
In point：Al2O3Content be 20-33%, Fe2O3Content be less than 1.5%, refractoriness >=1670 DEG C of the alumina.
5. the preparation method of a kind of mullite funnel brick according to claim 1 or 2 or 3 or 4, it is characterised in that described
Burning till in step 4) is carried out under weak oxide environment, and described bonding agent is 25-45% industrial phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822498.3A CN107602135A (en) | 2017-09-13 | 2017-09-13 | A kind of preparation method of mullite funnel brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822498.3A CN107602135A (en) | 2017-09-13 | 2017-09-13 | A kind of preparation method of mullite funnel brick |
Publications (1)
| Publication Number | Publication Date |
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| CN107602135A true CN107602135A (en) | 2018-01-19 |
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ID=61063988
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710822498.3A Pending CN107602135A (en) | 2017-09-13 | 2017-09-13 | A kind of preparation method of mullite funnel brick |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461329A (en) * | 2015-11-05 | 2016-04-06 | 浙江长兴强立耐火材料有限公司 | Preparation method of corundum-mullite funnel brick |
| CN106747523A (en) * | 2017-01-17 | 2017-05-31 | 重庆钢铁集团矿业有限公司冶金材料厂 | Low iron mullite brick and its manufacture method |
-
2017
- 2017-09-13 CN CN201710822498.3A patent/CN107602135A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461329A (en) * | 2015-11-05 | 2016-04-06 | 浙江长兴强立耐火材料有限公司 | Preparation method of corundum-mullite funnel brick |
| CN106747523A (en) * | 2017-01-17 | 2017-05-31 | 重庆钢铁集团矿业有限公司冶金材料厂 | Low iron mullite brick and its manufacture method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180119 |