CN106187236A - Flint clay composite refractory brick and its preparation method and application - Google Patents
Flint clay composite refractory brick and its preparation method and application Download PDFInfo
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- CN106187236A CN106187236A CN201610577323.6A CN201610577323A CN106187236A CN 106187236 A CN106187236 A CN 106187236A CN 201610577323 A CN201610577323 A CN 201610577323A CN 106187236 A CN106187236 A CN 106187236A
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- flint clay
- refractory brick
- composite refractory
- andalusite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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Abstract
The present invention provides a kind of flint clay composite refractory brick, including major ingredient and additive, described major ingredient includes the raw material of following mass percent: bauxite bulky grain 6%～12%, flint clay bulky grain 7%～28%, the little granule of andalusite 15%～27%, the little granule of flint clay 5%～10%, andalusite fine powder 15%～27%, flint clay fine powder 5%～10% and Kaolin micropowder 5%～14%；The quality of described additive is the 4.5%～5.5% of described major ingredient quality.The present invention also provides for the preparation method and application of a kind of above-mentioned flint clay composite refractory brick.The collocation of described flint clay composite refractory brick composition rationally and has good thermal shock resistance, preferable heat stability and higher refractoriness under load, thus improves the carbon baking furnace service life applying described flint clay composite fire brick masonry flue wall.
Description
Technical field
The invention belongs to technical field of refractory materials, specifically, relate to a kind of flint clay composite refractory brick and system thereof
Preparation Method and application.
Background technology
In modern carbon element industry, producing anode block with roaster the most universal, the main of carbon baking furnace is appointed
Business is roasting electrolytic aluminum anode carbon block.The baking furnace flame path wall of prior art is built by laying bricks or stones by clay brick and is formed, and fuel is in quirk
Burn, and transferred heat to the anode block closing in hopper by top load andalusite composite fire brick, sun
The roasting in the atmosphere not contacting flame of pole carbon block.So, refractory material in anode-baking furnace except to stand long-term height
Outside temperature, high pressure, still suffering from periodic variations in temperature, therefore, the requirement to refractory material is that high temperature creep rate is low, and loading is soft
Change temperature height, thermal shock resistance can be good.
And on the market that China is current, although Refractory material for carbon furnace produces the most universal, but, no matter
Be fireclay refractory or high alumina refractories or general creep refractory material all to there is load softening point the highest, hot
Shake stability is poor, long-time uses the shortcomings such as creep rate is big, can cause the appearance deformation that flue wall is too early, damage, anode carbon
Block produces and is greatly affected.
In order to solve with present on problem, people are seeking a kind of preferably technical solution always.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, thus provide a kind of and there is higher thermal shock resistance, higher
The flint clay composite refractory brick of refractoriness under load and preferable heat stability.
To achieve these goals, the technical solution adopted in the present invention is: a kind of flint clay composite refractory brick, it includes
Major ingredient and additive, described major ingredient includes the raw material of following mass percent: bauxite bulky grain 6%～12%, flint clay
Bulky grain 7%～28%, the little granule of andalusite 15%～27%, the little granule of flint clay 5%～10%, andalusite fine powder 15%～27%, Jiao
Gem fine powder 5%～10% and Kaolin micropowder 5%～14%；The quality of described additive be described major ingredient quality 4.5%～
5.5%。
Based on above-mentioned, described flint clay composite refractory brick includes the raw material of following mass percent: big of bauxite
Grain 6%, flint clay bulky grain 25%, the little granule of andalusite 17%, the little granule of flint clay 10%, andalusite fine powder 18%, flint clay fine powder
10%, Kaolin micropowder 14%.
Based on above-mentioned, the oarse-grained granularity of described bauxite is 1 mm～3 mm；The oarse-grained grain of described flint clay
Degree is 1 mm～3 mm.
Based on above-mentioned, the short grained granularity of described andalusite is less than 1 less than 1 mm, the short grained granularity of described flint clay
mm。
Based on above-mentioned, the granularity of described andalusite fine powder is less than less than 0.074 mm, the granularity of described flint clay fine powder
0.074 mm。
Based on above-mentioned, the granularity of described Kaolin micropowder is less than 0.043 mm.
Based on above-mentioned, described additive is pulp-water.
Wherein, described major ingredient includes aggregate and fines, and described flint clay composite refractory brick is with the bauxite in raw material
Bulky grain, flint clay bulky grain, the little granule of andalusite, the little granule of flint clay are aggregate, with andalusite fine powder, flint clay fine powder,
Kaolin micropowder is fines, is mixed by described additive.
The present invention also provides for the preparation method of a kind of above-mentioned flint clay composite refractory brick, comprises the following steps:
(1) calculate according to above-mentioned mass percent raw material, by bauxite bulky grain, flint clay bulky grain, little of andalusite
Grain, the little granule of flint clay and additive carry out mixed grind and prepare prefabricated pug；Then in described prefabricated pug, Kaolin is added micro-
Powder, flint clay fine powder and andalusite fine powder also carry out mixed grind and prepare mixed grind pug；
(2) described mixed grind pug is pressed into adobe, after the calcining of described adobe drying, prepares described flint clay composite refractory brick.
Based on above-mentioned, described step (2) including: described mixed grind pug is pressed into adobe, by described adobe in temperature is
24 hours～36 hours it are dried under the conditions of 60 DEG C～130 DEG C；Then by dried described adobe at 1450 DEG C～1480
Carry out at a temperature of DEG C calcining 10 hours～24 hours, thus prepare described flint clay composite refractory brick.
The present invention also provides for the application of a kind of above-mentioned flint clay composite refractory brick, and described flint clay composite refractory brick is applied to
In carbon baking furnace.
In flint clay composite refractory brick raw material provided by the present invention, the performance effect of each composition is as follows:
Andalusite: crystal belongs to the nesosilicate mineral of orthogonal (tiltedly side) crystallographic system, andalusite meeting in adobe calcination process
Occur irreversible crystal transformation to form the mullite with good mullite network, thus make it have more than 1800 DEG C
Fire resistance, and resistance to suddenly cold and hot, mechanical strength are big, heat shock resistance power and resistance to slag is strong, loading inversion point is high, and have high
Chemical stability and extremely strong resistance to chemical corrosion so that preparation described flint clay composite refractory brick there is Gao He
Creep soft, low, high thermal shock stability.
Kaolin: Kaolin belongs to 1:1 type phyllosilicate, crystal is mainly by silicon-oxy tetrahedron and aluminum hydrogen-oxygen octahedron group
Become, there is strong acid resistance and the flashback performance more than 1700 DEG C thus add described the anti-of flint clay composite refractory brick and forge
Burning property, Kaolin is combined the pug formed and has higher plasticity with water so that the described adobe of preparation has preferably one-tenth
Type.
Bauxite: referring to bauxite mineral material after calcining, it is mainly composed of diaspore and high alumina silicon
Stone, has higher flashback performance, is commonly used to prepare various high-alumina brick, is that metallurgical industry is widely used fire-resistant with other industry
Or anti-corrosion material.
Flint clay: technical term is one-level hard paste grog, is the multiple mixture containing aluminosilicate, and primary chemical becomes
It is divided into Al2O3And SiO2, with a small amount of Fe2O3Na with trace2O、K2O, has volume stability, intensity big after high-temperature calcination
And the characteristic such as water absorption rate is little, its refractoriness is up to more than 1750 DEG C, so that the described flint clay composite refractory brick tool of preparation
There are higher thermal shock resistance and preferable heat resistance.
Hinge structure of the present invention has prominent substantive distinguishing features and significantly progress, and specifically, the present invention will
Varigrained bauxite, Kaolin, andalusite, flint clay and additive mix so that the adobe of preparation each
The collocation of site component proportioning is consistent, it is ensured that the concordance of flint clay composite refractory brick each position performance of calcining gained, simultaneously
Containing the granularity material that a large amount of corner angle are prominent in raw material, increase critical granularity, provide firmly for flint clay composite refractory brick
Framing structure makes it in use be not likely to produce deformation.Meanwhile, bauxite, Kaolin, flint clay it are utilized respectively
Heat shock resistance power, resistance to slag be strong, loading turns having of being formed of calcination process for resistance to burning characteristic and preferable mouldability and andalusite
Change the mullite that point is high so that the flint clay composite refractory brick of preparation has high RUL, low creep, high thermal shock stability, thus
Improve the carbon baking furnace service life applying described flint clay composite fire brick masonry flue wall.And the method use former
Material is easy to get, composition collocation is reasonable, and preparation process is simple.
Detailed description of the invention
Below by detailed description of the invention, technical scheme is described in further detail.
Embodiment 1
The present embodiment provides a kind of flint clay composite refractory brick, and it includes aggregate, fines and pulp-water, wherein, described pulp-water
Quality be described aggregate and the 4.5% of described fines gross mass；Former by following mass percent of described aggregate and described fines
Material composition: bauxite bulky grain 6%, flint clay bulky grain 25%, the little granule of andalusite 17%, the little granule of flint clay 10%, red
Pillar fine powder 18%, flint clay fine powder 10%, Kaolin micropowder 14%.
Wherein, the oarse-grained granularity of described bauxite is 1 mm～3 mm, the oarse-grained granularity of described flint clay are 1
Mm～3 mm, the short grained granularity of described andalusite less than 1 mm, the short grained granularity of described flint clay less than 1 mm, described red
The granularity of pillar fine powder less than 0.074 mm, described flint clay fine powder granularity less than 0.074 mm, described Kaolin micropowder
Granularity is less than 0.043 mm.Chemical composition in each raw material is as shown in table 1.
Table 1, each raw material main chemical compositions
| Raw material | Al2O3 | Fe2O3 | K2O+NaO | Loss on ignition | Water absorption rate |
| The little granule of andalusite, fine powder | 55%～58% | ≤1.1% | ≤1.0% | -- | -- |
| Bauxite bulky grain | ≥80% | ≤1.5% | ≤0.6% | -- | -- |
| Kaolin micropowder | 32%～36% | ≤1.0% | ≤1.0% | 11%～13% | -- |
| Flint clay bulky grain, little granule, fine powder | ≥45% | ≤1.0% | ≤1.0% | -- | ＜ 3% |
-
The present embodiment also provides for the preparation method of a kind of flint clay composite refractory brick, and concrete preparation process includes:
Respectively andalusite, bauxite, flint clay are pulverized, prepare the material of above-mentioned granularity；
Weigh the described aggregate of following mass percent and described fines the most successively: bauxite bulky grain 6%, flint clay
The little granule of bulky grain 25%, andalusite 17%, the little granule of flint clay 10%, andalusite fine powder 18%, flint clay fine powder 10%, Kaolin
Micropowder 14%, and weigh the pulp-water of account for described aggregate and described fines gross mass 4.5%.
Then by the bauxite bulky grain of above-mentioned mass fraction, flint clay bulky grain, the little granule of andalusite, flint clay
Little granule and pulp-water carry out mixed grind 3 minutes～5 minutes and prepare prefabricated pug；Then in described prefabricated pug, above-mentioned matter is added
The amount andalusite fine powder of percent, flint clay fine powder and Kaolin micropowder also carry out mixed grind 10 minutes～20 minutes, prepare mixed grind
Pug.
The pressure tonnage brickmaking machine more than 315 tons is used described mixed grind pug to be pressed into adobe, then by described adobe
Putting into and be dried in tunnel type drying hole 24 hours, the inlet temperature wherein controlling described tunnel type drying hole is 60 DEG C, goes out
Mouth temperature is 130 DEG C；It is little by dried described adobe loading fuel gas tunnel kiln carries out calcining 12 at a temperature of 1480 DEG C
Time, thus prepare described flint clay composite refractory brick.After testing, the described flint clay composite refractory brick density that the present embodiment prepares
It is 2.31 g/cm3。
Flint clay composite refractory brick prepared by the preparation method provided by the present embodiment, can be applicable to build carbon baking furnace by laying bricks or stones
Flue wall.
Embodiment 2
The present embodiment provides a kind of flint clay composite refractory brick, and concrete material composition is roughly the same with embodiment 1, and difference exists
In, in the present embodiment, the quality of described pulp-water is described aggregate and the 5% of described fines gross mass, described aggregate and described carefully
Material includes the raw material of following mass percent: bauxite bulky grain 12%, flint clay bulky grain 17%, the little granule of andalusite
17%, the little granule of flint clay 10%, andalusite fine powder 15%, flint clay fine powder 7% and Kaolin micropowder 12%.
The preparation method of the flint clay composite refractory brick described in the present embodiment and the substantially phase of the preparation method in embodiment 1
With, difference is: described mixed grind pug is pressed into adobe, then described adobe is put in tunnel type drying hole and carries out
Be dried 36 hours, wherein control the inlet temperature of described tunnel type drying hole be 60 DEG C, outlet temperature be 130 DEG C；Will be dried
Described adobe load in fuel gas tunnel kiln and carry out calcining 10 hours at a temperature of 1470 DEG C；Thus it is multiple to prepare described flint clay
Close refractory brick.After testing, the described flint clay composite refractory brick density that the present embodiment prepares is 2.33 g/cm3。
Flint clay composite refractory brick prepared by the preparation method provided by the present embodiment, can be applicable to build carbon baking furnace by laying bricks or stones
Flue wall.
Embodiment 3
The present embodiment provides a kind of flint clay composite refractory brick, and concrete material composition is roughly the same with embodiment 1, and difference exists
In, in the present embodiment, the quality of described pulp-water is described aggregate and the 5% of described fines gross mass, described aggregate and described carefully
Material includes the raw material of following mass percent: bauxite bulky grain 10%, flint clay bulky grain 21%, the little granule of andalusite
18%, the little granule of flint clay 9%, andalusite fine powder 22%, flint clay fine powder 10% and Kaolin micropowder 10%.
The preparation method of the flint clay composite refractory brick described in the present embodiment and the substantially phase of the preparation method in embodiment 1
With, difference is: described mixed grind pug is pressed into adobe, then described adobe is put in tunnel type drying hole and carries out
Be dried 36 hours, wherein control the inlet temperature of described tunnel type drying hole be 60 DEG C, outlet temperature be 130 DEG C；Will be dried
Described adobe load in fuel gas tunnel kiln and carry out calcining 20 hours at a temperature of 1450 DEG C；Thus it is multiple to prepare described flint clay
Close refractory brick.After testing, the described flint clay composite refractory brick density that the present embodiment prepares is 2.32 g/cm3。
Flint clay composite refractory brick prepared by the preparation method provided by the present embodiment, can be applicable to build carbon baking furnace by laying bricks or stones
Flue wall.
Flint clay composite refractory brick performance detects: respectively in the flint clay composite refractory brick to embodiment 1～3 preparation
Al2O3、Fe2O3Content, apparent porosity, cold crushing strength and 1350 DEG C of high temperature break resistant intensity performances detect, and
0.2MPa pressure, 1280 DEG C of calcinings creep rate of 25 hours and 50 hours detect, and testing result is as shown in table 2.
Table 2, flint clay composite refractory brick performance detect
As can be seen from the above table: the softening point of the flint clay composite refractory brick that embodiment 1～3 provides is more than 1500 DEG C, room temperature
Compressive resistance more than 45MPa, creep rate absolute value less than 0.4%, apparent porosity between 18%～20%, coefficient of thermal expansion is less than
0.6%, the most described flint clay composite refractory brick property indices meets GB/T3994-2013 set quota, described burnt precious
Stone composite refractory brick has the high and low creep of load softening temperature, the performance of highly heatproof and shockproof, can apply to build carbon baking stove fire by laying bricks or stones
Road wall carrys out baked for producing anode block.
Finally should be noted that: above example is only in order to illustrate that technical scheme is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to preferred embodiment, and those of ordinary skill in the field are it is understood that still
The detailed description of the invention of the present invention can be modified or portion of techniques feature is carried out equivalent；Without deviating from this
The spirit of bright technical scheme, it all should be contained in the middle of the technical scheme scope that the present invention is claimed.
Claims (10)
1. a flint clay composite refractory brick, it is characterised in that it includes major ingredient and additive, it is characterised in that described major ingredient
Raw material including following mass percent: bauxite bulky grain 6%～12%, flint clay bulky grain 7%～28%, andalusite are little
Granule 15%～27%, the little granule of flint clay 5%～10%, andalusite fine powder 15%～27%, flint clay fine powder 5%～10% and Kaolin
Micropowder 5%～14%；The quality of described additive is the 4.5%～5.5% of described major ingredient quality.
Flint clay composite refractory brick the most according to claim 1, it is characterised in that it includes the former of following mass percent
Material: bauxite bulky grain 6%, flint clay bulky grain 25%, the little granule of andalusite 17%, the little granule of flint clay 10%, andalusite
Fine powder 18%, flint clay fine powder 10%, Kaolin micropowder 14%.
Flint clay composite refractory brick the most according to claim 1 and 2, it is characterised in that described bauxite bulky grain
Granularity be 1 mm～3 mm；The oarse-grained granularity of described flint clay is 1 mm～3 mm.
Flint clay composite refractory brick the most according to claim 3, it is characterised in that the short grained granularity of described andalusite is little
In 1 mm, the short grained granularity of described flint clay less than 1 mm.
Flint clay composite refractory brick the most according to claim 4, it is characterised in that the granularity of described andalusite fine powder is less than
0.074 mm, the granularity of described flint clay fine powder are less than 0.074 mm.
Flint clay composite refractory brick the most according to claim 5, it is characterised in that the granularity of described Kaolin micropowder is less than
0.043 mm。
Flint clay composite refractory brick the most according to claim 6, it is characterised in that described additive is pulp-water.
8. a preparation method for described flint clay composite refractory brick, comprises the following steps:
(1) calculate according to the flint clay composite refractory brick raw materials quality percent described in any one of claim 1～7, by aluminum vitriol
Soil grog bulky grain, flint clay bulky grain, the little granule of andalusite, the little granule of flint clay and additive carry out mixed grind and prepare prefabricated mud
Material；Then in described prefabricated pug, add Kaolin micropowder, flint clay fine powder and andalusite fine powder and carry out mixed grind and prepare mixed
Grind pug；
(2) described mixed grind pug is pressed into adobe, after the calcining of described adobe drying, prepares described flint clay composite refractory brick.
The preparation method of flint clay composite refractory brick the most according to claim 8, it is characterised in that described step (2) is wrapped
Include: described mixed grind pug is pressed into adobe, described adobe is dried 24 hours under the conditions of temperature is 60 DEG C～130 DEG C
～36 hours；Then carry out dried described adobe at a temperature of 1420 DEG C～1450 DEG C calcining 10 hours～24 little
Time, thus prepare described flint clay composite refractory brick.
10. the application of the flint clay composite refractory brick described in an any one of claim 1～7, it is characterised in that described burnt precious
Stone composite refractory brick is applied in carbon baking furnace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610577323.6A CN106187236A (en) | 2016-07-21 | 2016-07-21 | Flint clay composite refractory brick and its preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610577323.6A CN106187236A (en) | 2016-07-21 | 2016-07-21 | Flint clay composite refractory brick and its preparation method and application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056850A (en) * | 2019-11-06 | 2020-04-24 | 郑州市奥达耐火材料有限公司 | Quasi-sillimanite brick for glass melting furnace |
| CN111348927A (en) * | 2019-11-06 | 2020-06-30 | 郑州市奥达耐火材料有限公司 | Modified brick for lime kiln |
| CN111423210A (en) * | 2020-05-19 | 2020-07-17 | 山西盂县西小坪耐火材料有限公司 | Low-porosity clay brick and preparation method thereof |
| CN112408965A (en) * | 2020-12-30 | 2021-02-26 | 巩义市新科耐火材料有限公司 | Acid-resistant brick for incinerator and preparation method thereof |
| CN116553939A (en) * | 2023-05-18 | 2023-08-08 | 河南瑞泰耐火材料科技有限公司 | Lightweight high thermal shock refractory material for cement kiln preheating decomposition zone and preparation method thereof |
| CN116553911A (en) * | 2023-04-15 | 2023-08-08 | 河南新拓耐火材料有限公司 | Application of clay clinker flint clay in composite sliding nozzle brick outer layer material |
| CN117902909A (en) * | 2024-03-19 | 2024-04-19 | 阳城县圣利安建材有限公司 | Flint clay brick and manufacturing method |
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| CN105418098A (en) * | 2015-12-16 | 2016-03-23 | 董建军 | Heat-conductive and energy-saving refractory brick used for fire path wall in carbon roasting furnace and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056850A (en) * | 2019-11-06 | 2020-04-24 | 郑州市奥达耐火材料有限公司 | Quasi-sillimanite brick for glass melting furnace |
| CN111348927A (en) * | 2019-11-06 | 2020-06-30 | 郑州市奥达耐火材料有限公司 | Modified brick for lime kiln |
| CN111423210A (en) * | 2020-05-19 | 2020-07-17 | 山西盂县西小坪耐火材料有限公司 | Low-porosity clay brick and preparation method thereof |
| CN112408965A (en) * | 2020-12-30 | 2021-02-26 | 巩义市新科耐火材料有限公司 | Acid-resistant brick for incinerator and preparation method thereof |
| CN116553911A (en) * | 2023-04-15 | 2023-08-08 | 河南新拓耐火材料有限公司 | Application of clay clinker flint clay in composite sliding nozzle brick outer layer material |
| CN116553939A (en) * | 2023-05-18 | 2023-08-08 | 河南瑞泰耐火材料科技有限公司 | Lightweight high thermal shock refractory material for cement kiln preheating decomposition zone and preparation method thereof |
| CN117902909A (en) * | 2024-03-19 | 2024-04-19 | 阳城县圣利安建材有限公司 | Flint clay brick and manufacturing method |
| CN117902909B (en) * | 2024-03-19 | 2024-06-11 | 阳城县圣利安建材有限公司 | Flint clay brick and manufacturing method |
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Application publication date: 20161207 |