CN106187239A - Low creep flint clay composite refractory brick and its preparation method and application - Google Patents

Low creep flint clay composite refractory brick and its preparation method and application Download PDF

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CN106187239A
CN106187239A CN201610577329.3A CN201610577329A CN106187239A CN 106187239 A CN106187239 A CN 106187239A CN 201610577329 A CN201610577329 A CN 201610577329A CN 106187239 A CN106187239 A CN 106187239A
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flint clay
refractory brick
low creep
composite refractory
flint
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贺延奎
王法河
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Jiyuan Jinfeng Refractory Material Co Ltd
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Jiyuan Jinfeng Refractory Material Co Ltd
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Abstract

The present invention provides a kind of low creep flint clay composite refractory brick, including major ingredient and additive, described major ingredient includes the raw material of following mass percent: flint clay large granule 5%~15%, flint clay bulky grain 15%~35%, the little granule of flint clay 10%~20%, the little granule of sillimanite 5%~15%, flint clay micropowder 15%~35%, bonding clay fine powder 10%~20%;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 low creep flint clay composite refractory brick.The collocation of described low creep 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 low creep flint clay composite fire brick masonry flue wall.

Description

Low creep flint clay composite refractory brick and its preparation method and application
Technical field
The invention belongs to technical field of refractory materials, specifically, relate to a kind of low creep flint clay composite refractory brick And its 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 thermal shock resistance high, reasonable.
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 The shortcomings such as shake poor stability, long-time use creep rate are big, can cause the appearance deformation that flue wall is too early, damage, anode block Production 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 Refractoriness under load and the low creep flint clay composite refractory brick of preferable heat stability.
To achieve these goals, the technical solution adopted in the present invention is: include major ingredient and additive, described major ingredient bag Include the raw material of following mass percent: flint clay large granule 5%~15%, flint clay bulky grain 15%~35%, little of flint clay Grain 10%~20%, the little granule of sillimanite 5%~15%, flint clay micropowder 15%~35%, bonding clay fine powder 10%~20%;Described add Add quality is described major ingredient quality the 4.5%~5.5% of agent.
Based on above-mentioned, described major ingredient includes the raw material of following mass percent: flint clay large granule 5%, flint clay bulky grain 30%, the little granule of flint clay 15%, the little granule of sillimanite 10%, flint clay micropowder 25%, bonding clay fine powder 15%.
Based on above-mentioned, the granularity of described flint clay large granule is 3 mm~4 mm;The oarse-grained granularity of described flint clay It is 1 mm~3 mm.
Based on above-mentioned, the short grained granularity of described flint clay is less than 1 mm;The short grained granularity of described sillimanite is less than 1 mm。
Based on above-mentioned, the granularity of described flint clay micropowder is less than less than 0.043 mm, the granularity of described bonding clay fine powder 0.074 mm。
Based on above-mentioned, described additive is pulp-water.
Wherein, described major ingredient includes aggregate and fines, and described low creep flint clay composite refractory brick is with the burnt treasured in raw material Stone large granule, flint clay bulky grain, the little granule of flint clay, the little granule of sillimanite are aggregate, with flint clay micropowder, bonding clay Fine powder is fines, is mixed by described additive.
The present invention also provides for the preparation method of a kind of described low creep flint clay composite refractory brick, comprises the following steps:
(1) calculate according to above-mentioned mass percent, by flint clay large granule, flint clay bulky grain, the little granule of flint clay, silicon line The little granule of stone and additive carry out mixed grind and prepare prefabricated pug;Then in described prefabricated pug, add flint clay micropowder, combination Well as clay fines also carries out mixed grind and prepares mixed grind pug;
(2) described mixed grind pug is pressed into adobe, prepares described low creep flint clay after the calcining of described adobe drying and be combined Refractory brick.
Based on above-mentioned, described step (2) including: described step (2) including: described mixed grind pug is pressed into adobe, will Described adobe is dried 24 hours~36 hours under the conditions of temperature is 60 DEG C~130 DEG C;Then by dried described brick Base carries out calcining 10 hours~24 hours at a temperature of 1450 DEG C~1480 DEG C, thus prepares described low creep flint clay and be combined Refractory brick.
The present invention also provides for the application of a kind of above-mentioned low creep flint clay composite refractory brick, and described low creep flint clay is combined Refractory brick is applied in carbon baking furnace.
In low creep flint clay composite refractory brick raw material provided by the present invention, the performance effect of each composition is as follows:
Sillimanite: sillimanite is also silimanite or sillimanite, it is a kind of brown, light green color, light blue or white glassy Silicate mineral, is mainly composed of silicon oxide and aluminium oxide.The crystal of sillimanite is column or needle-like, and these crystal are aggregated in one Often rise in fibrous or radial, there is gloss or the glassy lustre of silk.Become mullite after sillimanite heating, be used as height Level refractory material.
Flint clay: also known as one-level hard paste grog, is the multiple mixture containing aluminosilicate, and main chemical compositions is Al2O3And SiO2, with a small amount of Fe2O3Na with trace2O、K2O, has volume stability, intensity after high-temperature calcination and greatly and inhales The characteristics such as water rate is little, its refractoriness is up to more than 1750 DEG C, so that the described low creep flint clay composite refractory brick of preparation There is higher thermal shock resistance and preferable heat resistance.
Bonding clay: bonding clay is mainly kaolinite, silicon oxide and aluminium oxide, Se Bai and fire-resistant, for preparation china clay it Primary raw material, is a kind of high plasticity clay.The performance of bonding clay fine powder is affected by factors, with mineralogical composition, mineral Performance, crystallizable mineral feature, the granular size of mineral, electrolyte type, the Law of Cause of Formation of clay and processing technique etc. are because have Close relationship.This case is chosen alumina content be 34%~37%, ferrum oxide less than 1.5% high-quality bonding clay, utilize it Preferably caking property and plasticity makes bonding between each granule and micropowder closely and make low creep flint clay composite refractory brick Base mouldability is higher.
Hinge structure of the present invention has prominent substantive distinguishing features and significantly progress, and specifically, the present invention will Varigrained flint clay, sillimanite, bonding clay and additive mix so that each site component of the adobe of preparation is joined More consistent than collocation, it is ensured that the concordance of low creep flint clay composite refractory brick each position performance of calcining gained, raw material simultaneously In containing the prominent granularity material of a large amount of corner angle, increase critical granularity, provide firmly for low creep flint clay composite refractory brick Framing structure make it in use be not likely to produce deformation.Meanwhile, flint clay, sillimanite, bonding clay it are utilized respectively thin Heat shock resistance power, resistance to slag be strong, lotus having of being formed of calcination process for the resistance to burning characteristic of powder and preferable mouldability and sillimanite The mullite that weight inversion point is high so that the low creep flint clay composite refractory brick of preparation has high RUL, low creep, highly heatproof and shockproof Performance, thus improve the carbon baking furnace service life applying described low creep flint clay composite fire brick masonry flue wall. And the raw material that the method uses is easy to get, composition collocation is reasonable, 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 low creep flint clay composite refractory brick, and it includes aggregate, fines and pulp-water, wherein, described The quality of pulp-water is described aggregate and the 4.5% of described fines gross mass;Described aggregate and described fines include following quality hundred The raw material of mark: flint clay large granule 5%, flint clay bulky grain 30%, the little granule of flint clay 15%, the little granule of sillimanite 10%, Flint clay micropowder 25%, bonding clay fine powder 15%.
Wherein, the granularity of described flint clay large granule is 3 mm~4 mm, the oarse-grained granularity of described flint clay are 1 Mm~3 mm, the short grained granularity of described flint clay are less than 1 mm, described less than 1 mm, the short grained granularity of described sillimanite The granularity of the flint clay micropowder granularity less than 0.043 mm, described bonding clay fine powder is less than 0.074 mm.Change in each raw material Study point as shown in table 1.
Table 1, each raw material main chemical compositions
Raw material Al2O3 Fe2O3 K2O+NaO SiO2
The little granule of sillimanite 55%~58% ≤1.1% ≤1.0% --
Flint clay large granule, bulky grain, little granule, micropowder ≥45% ≤1.0% ≤1.0% --
Bonding clay fine powder 34%~37% ≤1.5% ≤0.5% --
The present embodiment also provides for the preparation method of a kind of described low creep flint clay composite refractory brick, and concrete preparation process includes:
Respectively sillimanite, flint clay, bonding clay are carried out pulverizing the raw material of prepared above-mentioned granularity.
By the flint clay large granule of above-mentioned mass percent, flint clay bulky grain, the little granule of flint clay, little of sillimanite Grain and pulp-water 4.5% carry out mixed grind 3 minutes~5 minutes and prepare prefabricated pug;Then in described prefabricated pug, described Jiao is added Gem micropowder, described bonding clay fine powder 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 10 at a temperature of 1480 DEG C Time, thus prepare described low creep flint clay composite refractory brick.After testing, the described low creep flint clay that the present embodiment prepares is multiple Closing refractory brick density is 2.31 g/cm3
Low creep flint clay composite refractory brick prepared by the preparation method provided by the present embodiment, can be applicable to build carbon element by laying bricks or stones Baking furnace flame path wall.
Embodiment 2
The present embodiment provides a kind of low creep flint clay composite refractory brick, and concrete material composition is roughly the same with embodiment 1, different Part be, 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 fines includes the raw material of following mass percent: flint clay large granule 6%, flint clay bulky grain 29%, little of flint clay Grain 16%, the little granule of sillimanite 11%, flint clay micropowder 22%, bonding clay fine powder 16%.
The preparation method of the low creep flint clay composite refractory brick described in the present embodiment is big with the preparation method in embodiment 1 Causing identical, difference is: described mixed grind pug is pressed into adobe, then described adobe is put in tunnel type drying hole Be dried 30 hours, wherein control the inlet temperature of described tunnel type drying hole be 60 DEG C, outlet temperature be 130 DEG C;Will be dry Described adobe loading fuel gas tunnel kiln after dry carries out calcining 12 hours at a temperature of 1470 DEG C;Thus prepare described low compacted Zoom gem composite refractory brick.After testing, the described low creep flint clay composite refractory brick density that the present embodiment prepares is 2.29 g/cm3
Low creep flint clay composite refractory brick prepared by the preparation method provided by the present embodiment, can be applicable to build carbon element by laying bricks or stones Baking furnace flame path wall.
Embodiment 3
The present embodiment provides a kind of low creep flint clay composite refractory brick, and concrete material composition is roughly the same with embodiment 1, different Part is, in the present embodiment, the quality of described pulp-water is described aggregate and the 5.5% of described fines gross mass, described aggregate With the raw material that described fines includes following mass percent: flint clay large granule 7%, flint clay bulky grain 30%, flint clay are little The little granule of granule 18%, sillimanite 10%, flint clay micropowder 23%, bonding clay fine powder 12%.
The preparation method of the low creep flint clay composite refractory brick described in the present embodiment is big with the preparation method in embodiment 1 Causing identical, difference is: described mixed grind pug is pressed into adobe, then described adobe is put in tunnel type drying hole Be dried 24 hours, wherein control the inlet temperature of described tunnel type drying hole be 60 DEG C, outlet temperature be 130 DEG C;Then Carry out calcining at a temperature of 1450 DEG C 20 hours by dried adobe, thus prepare described low creep flint clay composite fire Brick.After testing, the described low creep flint clay composite refractory brick density that the present embodiment prepares is 2.32 g/cm3
Low creep flint clay composite refractory brick prepared by the preparation method provided by the present embodiment, can be applicable to build carbon element by laying bricks or stones Baking furnace flame path wall.
Low creep flint clay composite refractory brick performance detects: be combined the low creep flint clay of embodiment 1~3 preparation respectively Al in refractory brick2O3、Fe2O3Content, apparent porosity, cold crushing strength and 1350 DEG C of high temperature break resistant intensity performances detect, And detect in 0.2MPa pressure, 1280 DEG C of calcinings creep rate of 25 hours and 50 hours, testing result is as shown in table 2.
Table 2, low creep flint clay composite refractory brick performance detect
As can be seen from the above table: the softening point of the low creep flint clay composite refractory brick that embodiment 1~3 provides is more than 1450 DEG C, cold crushing strength more than 54MPa, creep rate absolute value less than 0.4%, apparent porosity is between 13%~15%, thermal expansion Rate is less than 0.7%, and the most described low creep flint clay composite refractory brick property indices meets GB/T3994-2013 regulation Index, described low creep flint clay composite refractory brick has the high and low creep of load softening temperature, the performance of highly heatproof and shockproof, can answer Baked for producing anode block is carried out for building carbon baking furnace flame path wall by laying bricks or stones.
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 (9)

1. a low creep flint clay composite refractory brick, including major ingredient and additive, it is characterised in that described major ingredient includes following The raw material of mass percent: flint clay large granule 5%~15%, flint clay bulky grain 15%~35%, the little granule of flint clay 10%~ 20%, the little granule of sillimanite 5%~15%, flint clay micropowder 15%~35%, bonding clay fine powder 10%~20%;Described additive Quality is the 4.5%~5.5% of described major ingredient quality.
Low creep flint clay composite refractory brick the most according to claim 1, it is characterised in that described major ingredient includes following matter The raw material of amount percent: flint clay large granule 5%, flint clay bulky grain 30%, the little granule of flint clay 15%, the little granule of sillimanite 10%, flint clay micropowder 25%, bonding clay fine powder 15%.
Low creep flint clay composite refractory brick the most according to claim 1 and 2, it is characterised in that described flint clay super large The granularity of granule is 3 mm~4 mm;The oarse-grained granularity of described flint clay is 1 mm~3 mm.
Low creep flint clay composite refractory brick the most according to claim 3, it is characterised in that described flint clay is short grained Granularity is less than 1 mm;The short grained granularity of described sillimanite is less than 1 mm.
Low creep flint clay composite refractory brick the most according to claim 4, it is characterised in that the grain of described flint clay micropowder The degree granularity less than 0.043 mm, described bonding clay fine powder is less than 0.074 mm.
Low creep flint clay composite refractory brick the most according to claim 5, it is characterised in that described additive is paper pulp Water.
7. a preparation method for described low creep flint clay composite refractory brick, comprises the following steps:
(1) calculate according to the low creep flint clay composite refractory brick raw materials quality percent described in any one of claim 1~6, Flint clay large granule, flint clay bulky grain, the little granule of flint clay, the little granule of sillimanite and additive are carried out mixed grind and prepares pre- Pug processed;Then in described prefabricated pug, add flint clay micropowder, bonding clay fine powder and carry out mixed grind and prepare mixed grind pug;
(2) described mixed grind pug is pressed into adobe, prepares described low creep flint clay after the calcining of described adobe drying and be combined Refractory brick.
The preparation method of low creep flint clay composite refractory brick the most according to claim 7, it is characterised in that described step (2) including: described mixed grind pug is pressed into adobe, described adobe is dried under the conditions of temperature is 60 DEG C~130 DEG C 24 hours~36 hours;Then carry out dried described adobe at a temperature of 1450 DEG C~1480 DEG C calcining 10 hours~ 24 hours, thus prepare described low creep flint clay composite refractory brick.
9. the application of the low creep flint clay composite refractory brick described in an any one of claim 1~6, it is characterised in that institute State low creep flint clay composite refractory brick to be applied in carbon baking furnace.
CN201610577329.3A 2016-07-21 2016-07-21 Low creep flint clay composite refractory brick and its preparation method and application Pending CN106187239A (en)

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Publication number Priority date Publication date Assignee Title
CN108503375A (en) * 2018-03-08 2018-09-07 山东嘉腾实业有限公司 High intensity ultra-large type keeps the temperature the preparation method of syphon
CN109053153A (en) * 2018-09-11 2018-12-21 郑州荣盛窑炉耐火材料有限公司 Low stomata clay brick of a kind of resisting temperature sudden turn of events chipping resistance and preparation method thereof
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
CN111056851A (en) * 2019-11-06 2020-04-24 郑州市奥达耐火材料有限公司 Super low-porosity brick
CN111635238A (en) * 2020-06-23 2020-09-08 郑州凯翔耐火材料有限公司 Low-porosity high-thermal-shock-resistance clay brick and preparation method thereof
CN111675546A (en) * 2020-06-23 2020-09-18 郑州凯翔耐火材料有限公司 Thermal shock resistant high-alumina brick and preparation method thereof
CN111718200A (en) * 2020-05-29 2020-09-29 郑州安耐克实业有限公司 Bottom creep clay brick for hot blast stove and preparation method thereof
CN111892410A (en) * 2020-08-04 2020-11-06 山东嘉和耐火材料有限责任公司 Preparation process and equipment of novel low-creep inorganic nonmetal new 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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CN103641491A (en) * 2013-11-20 2014-03-19 河南省新密正泰耐材有限公司 Slurry combined matrix-homogenized high-alumina brick and making method thereof

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108503375A (en) * 2018-03-08 2018-09-07 山东嘉腾实业有限公司 High intensity ultra-large type keeps the temperature the preparation method of syphon
CN109053153A (en) * 2018-09-11 2018-12-21 郑州荣盛窑炉耐火材料有限公司 Low stomata clay brick of a kind of resisting temperature sudden turn of events chipping resistance and preparation method thereof
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
CN111056851A (en) * 2019-11-06 2020-04-24 郑州市奥达耐火材料有限公司 Super low-porosity brick
CN111718200A (en) * 2020-05-29 2020-09-29 郑州安耐克实业有限公司 Bottom creep clay brick for hot blast stove and preparation method thereof
CN111635238A (en) * 2020-06-23 2020-09-08 郑州凯翔耐火材料有限公司 Low-porosity high-thermal-shock-resistance clay brick and preparation method thereof
CN111675546A (en) * 2020-06-23 2020-09-18 郑州凯翔耐火材料有限公司 Thermal shock resistant high-alumina brick and preparation method thereof
CN111892410A (en) * 2020-08-04 2020-11-06 山东嘉和耐火材料有限责任公司 Preparation process and equipment of novel low-creep inorganic nonmetal new 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
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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