CN103819206B - Zirconium mullite red brick and preparation technology thereof - Google Patents
Zirconium mullite red brick and preparation technology thereof Download PDFInfo
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Abstract
The invention relates to a refractory material, in particular to a zirconium mullite red brick and a preparation technology thereof. According to the zirconium mullite red brick provided by the invention and a product prepared due to the adoption of the preparation technology, a refractory brick is prepared by adding a phosphoric acid solution; according to the refractory brick, the temperature of a kiln shell can be effectively reduced, the refractory brick is long in service life, resistant to abrasion and high in anti-erosion ability, and particularly the times of thermal shock resistance reach more than 40; the operating temperature range of the product is between 1400 DEG C and 1550 DEG C, and the maximum allowable temperature is 1600 DEG C; at a high-temperature operating state, the product has high strength, erosion resistance, high-wearing feature, high thermal shock resistance, low heat conductivity coefficient and higher refractoriness under load.
Description
Technical field
The present invention relates to refractory materials, particularly relate to zirconium mullite red brick and preparation technology thereof.
Background technology
NSP rotary kiln technology has become the main production technique of cement industry, and playing brick maintenance and building by laying bricks or stones also to have developed of rotary kiln becomes a field with keen competition.For cement mill owner, shorten and stop the kiln time, reduce maintenance of equipment cost, ensure job safety, improve rotary kiln utilization ratio and become the problem that must attach great importance to.
Transitional zone brick in NSP rotary kiln of the prior art, conventional import spinel brick and siliceous mullite brick, because spinel brick cost intensive, work-ing life are short, and the thermal conductivity of spinel brick is high, is unfavorable for saving energy and reduce the cost; And the content of aluminum oxide is not high in siliceous mullite brick finished bricks, resistance to elevated temperatures and corrosion resistance poor, thermal shock number is usually at about 11 times, siliceous mullite brick easily weathers, therefore work-ing life is also shorter, therefore in dry-process rotory kiln of the prior art all there is short deficiency in work-ing life in transitional zone brick.
Summary of the invention
Zirconium mullite red brick provided by the invention and preparation technology thereof, to be intended to overcome in prior art short deficiency in transitional zone brick in dry-process rotory kiln work-ing life.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: zirconium mullite red brick, and the weight percent comprising each component of following component is:
Diameter is greater than the special grade bauxite grog that 3 millimeters are less than or equal to 5 millimeters: 5% ~ 10%;
Diameter is greater than the special grade bauxite grog that 1 millimeter is less than or equal to 3 millimeters: 15% ~ 23%;
Diameter is greater than the fused mullite that 1 millimeter is less than or equal to 3 millimeters: 15% ~ 20%;
Diameter is greater than the mullite synthesizing that 0.1 millimeter is less than or equal to 1 millimeter: 10% ~ 13%;
The mullite synthesizing that diameter is less than 0.1 millimeter: 5% ~ 8%;
Diameter is greater than 0.1 millimeter of zirconium that contains being less than or equal to 1 millimeter and is more than or equal to 65% zircon concentrate powder: 3% ~ 15%;
White clay: kaolin blending ratio is the compound clay of 3:1: 5% ~ 15%;
Silicon carbide micro-powder: 6% ~ 15%;
Yttrium oxide micro mist: 0.1% ~ 3%;
Aluminium powder: 0.1% ~ 3%;
Silica flour: 0.1% ~ 3%;
Andalusite micropowder: 2% ~ 6%;
White fused alumina micro mist: 6% ~ 10%;
Alumina powder: 2% ~ 6%;
Industrial phosphoric acid: 2% ~ 6%.
As preferably, the active aluminium content of described aluminium powder is more than or equal to 98%, described silica flour is metallurgy one-level, silicone content is more than or equal to 98.5%, by the aluminium powder adopting active aluminium content to be more than or equal to 98%, silicone content is more than or equal to the silica flour of 98.5% to improve wear-resistant, high temperature resistant, the oxidation-resistance of refractory materials, the advantage using the alloy of dual element to have substep inhibited oxidation to carry out, the opinion to Al-Si alloy, first generates SiO during oxidation
2, next generates Al
2o
3, the void content of goods is reduced, improves intensity and the wear resistance of goods simultaneously, because melting point metal is lower than firing temperature, metal will play the effect of sintering agent, and the void content of burnt product can be made to decline, and volume density rises, improve the toughness of burnt brick, and improve the heat-shock resistance of brick, consider from dynamic (dynamical) angle, Al, the compound of the oxidizing reaction generation of Si changes the microstructure of refractory materials, increase density, blocking pore, hinder the diffusion of oxidation reaction product, solve the conflict be always present in for a long time in refractory materials: quite high void content must be retained for improving heat-shock resistance, but the intensity of material and erosion-resistant ability must be reduced, the existence of Plastic Deformation phase, this contradiction is solved naturally, because metal is present in material all the time, once after the surface of material is etched or occurs new fracture, this preservative coat can generate automatically, the ability that material has " selfreparing ", there is the performance of intelligent material, therefore aluminium powder, silica flour is applied in the quality that can improve zirconium mullite red brick in the preparation process of zirconium mullite red brick.
As preferably, the iron oxide content in described compound clay is less than or equal to 2%, by the compound clay adopting iron oxide content to be less than or equal to 2%, improves the quality of zirconium mullite red brick.
As preferably, described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite, by adopt content be more than or equal to 70% high―temperature nuclei mullite, improve the quality of zirconium mullite red brick.
Zirconium mullite red brick preparation technology, comprises the following steps:
Step a: diameter is greater than 3 millimeters of special grade bauxite grog, diameters being less than or equal to 5 millimeters are greater than that 1 millimeter of special grade bauxite grog, diameter being less than or equal to 3 millimeters is greater than that 1 millimeter of fused mullite, diameter being less than or equal to 3 millimeters is greater than mullite synthesizing that 0.1 millimeter of mullite synthesizing, diameter being less than or equal to 1 millimeter is less than 0.1 millimeter, diameter is greater than 0.1 millimeter and is less than or equal to 1 millimeter be more than or equal to 65% zircon concentrate powder containing zirconium and mix obtained aggregate, described mixing time is no less than 5 minutes;
Step b: compound clay, silicon carbide micro-powder, yttrium oxide micro mist, aluminium powder, silica flour, andalusite micropowder, white fused alumina micro mist, alumina powder are mixed and make auxiliary material;
Step c: the aggregate obtained by step a adds step b obtained auxiliary material mix 5 minutes ~ 8 minutes with industrial phosphoric acid after mixes 10 minutes ~ 15 minutes obtained pugs;
Steps d: the pug obtained step c is no less than the ageing mixture of 24 hours;
Step e: carry out shaping to the pug after steps d ageing mixture;
Step f: 24 hours obtained blanks are no less than to the drying at the temperature of 110 degrees Celsius ~ 120 degrees Celsius of the pug after step e is shaping;
Step g: the blank obtained by step f burns till at the temperature of 1480 degrees Celsius ~ 1510 degrees Celsius.
As preferably, the mixing time of described step b is no less than 10 minutes, can cross the mixing time adopting and be no less than 10 minutes, and material mixing is more even, improves the quality of zirconium mullite red brick.
As preferably, the ageing mixture time of described steps d is 48 hours, by extending the ageing mixture time, improves the stability of material.
As preferably, the forming pressure of described step e is 630 tons ~ 1000 tons, by adopting the forming pressure within the scope of this, strong mechanical property, improves the quality of zirconium mullite red brick.
As preferably, the drying temperature of described step f is 120 degrees Celsius, and by adopting the drying temperature of 120 degrees Celsius, rate of drying is fast, improves the preparation efficiency of zirconium mullite red brick.
As preferably, the firing temperature of described step g is 1510 degrees Celsius, and by adopting the firing temperature of 1510 degrees Celsius, zirconium mullite red brick has better resistance to elevated temperatures, and zirconium mullite red brick steady quality.
Zirconium mullite red brick provided by the invention and employing the present invention prepare obtained product, tool has the following advantages: make refractory brick by adding phosphoric acid solution, this refractory brick can effectively reduce kiln shell temperature, and long service life, wear-resistant, corrosion resistance is strong, and particularly thermal shock number reaches more than 40 times; Product work temperature range is between 1400 degrees Celsius to 1550 degrees Celsius, and the highest permission 1600 degree, under hot operation state, this product has high strength, resistant to corrosion, high-wearing feature, high thermal shock resistance, refractoriness under load that thermal conductivity is low and higher.
Embodiment
The aluminium powder of the present invention by adopting active aluminium content to be more than or equal to 98%, silicone content is more than or equal to the silica flour of 98.5% to improve wear-resistant, high temperature resistant, the oxidation-resistance of refractory materials, the advantage using the alloy of dual element to have substep inhibited oxidation to carry out, the opinion to Al-Si alloy, first generates SiO during oxidation
2, next generates Al
2o
3, the void content of goods is reduced, improves intensity and the wear resistance of goods simultaneously, because melting point metal is lower than firing temperature, metal will play the effect of sintering agent, and the void content of burnt product can be made to decline, and volume density rises, improve the toughness of burnt brick, and improve the heat-shock resistance of brick, consider from dynamic (dynamical) angle, Al, the compound of the oxidizing reaction generation of Si changes the microstructure of refractory materials, increase density, blocking pore, hinder the diffusion of oxidation reaction product, solve the conflict be always present in for a long time in refractory materials: quite high void content must be retained for improving heat-shock resistance, but the intensity of material and erosion-resistant ability must be reduced, the existence of Plastic Deformation phase, this contradiction is solved naturally, because metal is present in material all the time, once after the surface of material is etched or occurs new fracture, this preservative coat can generate automatically, the ability that material has " selfreparing ", there is the performance of intelligent material, therefore aluminium powder, silica flour is applied in the quality that can improve zirconium mullite red brick in the preparation process of zirconium mullite red brick.
Yttrium oxide micro mist in the present invention is industrial micron order; The zirconium mullite red brick that the present invention obtains all adopts following standard detection:
The fine and close shaping refractory product volume density of standard GB/T/T 2997-2000, apparent porosity and true porosity test method;
Standard GB/T/T 5072.1-1998 fine and close shaping refractory product cold crushing strength test method;
Standard GB/T/T5989-1998 refractory product refractoriness under load test method (differential-temperature-raising method);
Metallurgy industry standard YB/T 376.1-1995 refractory product heat-shock resistance test method (water quick cooling method).
Below by embodiment, zirconium mullite red brick of the present invention and preparation technology thereof are described in detail:
Embodiment one
Zirconium mullite red brick, the weight percent comprising each component of following component is:
Diameter is greater than the special grade bauxite grog that 3 millimeters are less than or equal to 5 millimeters: 5%;
Diameter is greater than the special grade bauxite grog that 1 millimeter is less than or equal to 3 millimeters: 18%;
Diameter is greater than the fused mullite that 1 millimeter is less than or equal to 3 millimeters: 15%;
Diameter is greater than the mullite synthesizing that 0.1 millimeter is less than or equal to 1 millimeter: 10%, and described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite;
The mullite synthesizing that diameter is less than 0.1 millimeter: 7%, described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite;
Diameter is greater than 0.1 millimeter of zirconium that contains being less than or equal to 1 millimeter and is more than or equal to 65% zircon concentrate powder: 9.9%;
White clay: kaolin blending ratio is the compound clay of 3:1: 9%, and the iron oxide content in described compound clay is less than or equal to 2%;
Silicon carbide micro-powder: 9%;
Yttrium oxide micro mist: 0.1%;
Aluminium powder: 1%, the active aluminium content of described aluminium powder is more than or equal to 98%;
Silica flour: 1%, described silica flour is metallurgy one-level, and silicone content is more than or equal to 98.5%;
Andalusite micropowder: 3%;
White fused alumina micro mist: 8%;
Alumina powder: 2%;
Industrial phosphoric acid: 2%.
Zirconium mullite red brick preparation technology, comprises the following steps:
Step a: diameter is greater than 3 millimeters of special grade bauxite grog, diameters being less than or equal to 5 millimeters are greater than that 1 millimeter of special grade bauxite grog, diameter being less than or equal to 3 millimeters is greater than that 1 millimeter of fused mullite, diameter being less than or equal to 3 millimeters is greater than mullite synthesizing that 0.1 millimeter of mullite synthesizing, diameter being less than or equal to 1 millimeter is less than 0.1 millimeter, diameter is greater than 0.1 millimeter and is less than or equal to 1 millimeter be more than or equal to 65% zircon concentrate powder containing zirconium and mix obtained aggregate, mixing time is 5 minutes;
Step b: compound clay, silicon carbide micro-powder, yttrium oxide micro mist, aluminium powder, silica flour, andalusite micropowder, white fused alumina micro mist, alumina powder are mixed and make auxiliary material, mixing time is 10 minutes;
Step c: the aggregate obtained by step a adds step b obtained auxiliary material after mixing 5 minutes with industrial phosphoric acid mixes 10 minutes obtained pugs;
Steps d: the pug obtained to step c enters ageing mixture, and the ageing mixture time is 48 hours;
Step e: carry out shaping to the pug after steps d ageing mixture, forming pressure is 630 tons;
Step f: to the dry 24 hours obtained blanks at the temperature of 120 degrees Celsius of the pug after step e is shaping;
Step g: the blank obtained by step f burns till at the temperature of 1510 degrees Celsius.
The zirconium mullite red brick that this example is obtained, product work temperature range, between 1400-1550, under hot operation state, has the feature of high strength, resistant to corrosion, high-wearing feature, high thermal shock resistance, refractoriness under load that thermal conductivity is low and higher.The Working environment of various complexity can be met, improve the work-ing life of product.Following numerical value is recorded under standard test condition:
Embodiment two
Zirconium mullite red brick, the weight percent comprising each component of following component is:
Diameter is greater than the special grade bauxite grog that 3 millimeters are less than or equal to 5 millimeters: 8%;
Diameter is greater than the special grade bauxite grog that 1 millimeter is less than or equal to 3 millimeters: 15%;
Diameter is greater than the fused mullite that 1 millimeter is less than or equal to 3 millimeters: 17%;
Diameter is greater than the mullite synthesizing that 0.1 millimeter is less than or equal to 1 millimeter: 10%, and described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite;
The mullite synthesizing that diameter is less than 0.1 millimeter: 5%, described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite;
Diameter is greater than 0.1 millimeter of zirconium that contains being less than or equal to 1 millimeter and is more than or equal to 65% zircon concentrate powder: 3%;
White clay: kaolin blending ratio is the compound clay of 3:1: 7%, and the iron oxide content in described compound clay is less than or equal to 2%;
Silicon carbide micro-powder: 8%;
Yttrium oxide micro mist: 3%;
Aluminium powder: 3%, the active aluminium content of described aluminium powder is more than or equal to 98%;
Silica flour: 3%, described silica flour is metallurgy one-level, and silicone content is more than or equal to 98.5%;
Andalusite micropowder: 5%;
White fused alumina micro mist: 7%;
Alumina powder: 4%;
Industrial phosphoric acid: 2%.
Zirconium mullite red brick preparation technology, comprises the following steps:
Step a: diameter is greater than 3 millimeters of special grade bauxite grog, diameters being less than or equal to 5 millimeters are greater than that 1 millimeter of special grade bauxite grog, diameter being less than or equal to 3 millimeters is greater than that 1 millimeter of fused mullite, diameter being less than or equal to 3 millimeters is greater than mullite synthesizing that 0.1 millimeter of mullite synthesizing, diameter being less than or equal to 1 millimeter is less than 0.1 millimeter, diameter is greater than 0.1 millimeter and is less than or equal to 1 millimeter be more than or equal to 65% zircon concentrate powder containing zirconium and mix obtained aggregate, mixing time is 10 minutes;
Step b: compound clay, silicon carbide micro-powder, yttrium oxide micro mist, aluminium powder, silica flour, andalusite micropowder, white fused alumina micro mist, alumina powder are mixed and make auxiliary material, mixing time is 15 minutes;
Step c: the aggregate obtained by step a adds step b obtained auxiliary material after mixing 8 minutes with industrial phosphoric acid mixes 15 minutes obtained pugs;
Steps d: the pug obtained to step c enters ageing mixture, and the ageing mixture time is 24 hours;
Step e: carry out shaping to the pug after steps d ageing mixture, forming pressure is 1000 tons;
Step f: to the dry 24 hours obtained blanks at the temperature of 110 degrees Celsius of the pug after step e is shaping;
Step g: the blank obtained by step f burns till at the temperature of 1480 degrees Celsius.
The zirconium mullite red brick that this example is obtained, product work temperature range, between 1400-1550, under hot operation state, has the feature of high strength, resistant to corrosion, high-wearing feature, high thermal shock resistance, refractoriness under load that thermal conductivity is low and higher.The Working environment of various complexity can be met, improve the work-ing life of product.Following numerical value is recorded under standard test condition:
Embodiment three
Zirconium mullite red brick, the weight percent comprising each component of following component is:
Diameter is greater than the special grade bauxite grog that 3 millimeters are less than or equal to 5 millimeters: 10%;
Diameter is greater than the special grade bauxite grog that 1 millimeter is less than or equal to 3 millimeters: 17%;
Diameter is greater than the fused mullite that 1 millimeter is less than or equal to 3 millimeters: 20%;
Diameter is greater than the mullite synthesizing that 0.1 millimeter is less than or equal to 1 millimeter: 13%, and described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite;
The mullite synthesizing that diameter is less than 0.1 millimeter: 8%, described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite;
Diameter is greater than 0.1 millimeter of zirconium that contains being less than or equal to 1 millimeter and is more than or equal to 65% zircon concentrate powder: 4.7%;
White clay: kaolin blending ratio is the compound clay of 3:1: 5%, and the iron oxide content in described compound clay is less than or equal to 2%;
Silicon carbide micro-powder: 6%;
Yttrium oxide micro mist: 0.1%;
Aluminium powder: 0.1%, the active aluminium content of described aluminium powder is more than or equal to 98%;
Silica flour: 0.1%, described silica flour is metallurgy one-level, and silicone content is more than or equal to 98.5%;
Andalusite micropowder: 2%;
White fused alumina micro mist: 6%;
Alumina powder: 2%;
Industrial phosphoric acid: 6%.
Zirconium mullite red brick preparation technology, comprises the following steps:
Step a: diameter is greater than 3 millimeters of special grade bauxite grog, diameters being less than or equal to 5 millimeters are greater than that 1 millimeter of special grade bauxite grog, diameter being less than or equal to 3 millimeters is greater than that 1 millimeter of fused mullite, diameter being less than or equal to 3 millimeters is greater than mullite synthesizing that 0.1 millimeter of mullite synthesizing, diameter being less than or equal to 1 millimeter is less than 0.1 millimeter, diameter is greater than 0.1 millimeter and is less than or equal to 1 millimeter be more than or equal to 65% zircon concentrate powder containing zirconium and mix obtained aggregate, mixing time is 12 minutes;
Step b: compound clay, silicon carbide micro-powder, yttrium oxide micro mist, aluminium powder, silica flour, andalusite micropowder, white fused alumina micro mist, alumina powder are mixed and make auxiliary material, mixing time is 17 minutes;
Step c: the aggregate obtained by step a adds step b obtained auxiliary material after mixing 6 minutes with industrial phosphoric acid mixes 14 minutes obtained pugs;
Steps d: the pug obtained to step c enters ageing mixture, and the ageing mixture time is 36 hours;
Step e: carry out shaping to the pug after steps d ageing mixture, forming pressure is 1000 tons;
Step f: to the dry 36 hours obtained blanks at the temperature of 115 degrees Celsius of the pug after step e is shaping;
Step g: the blank obtained by step f burns till at the temperature of 1500 degrees Celsius.
The zirconium mullite red brick that this example is obtained, product work temperature range, between 1400-1550, under hot operation state, has the feature of high strength, resistant to corrosion, high-wearing feature, high thermal shock resistance, refractoriness under load that thermal conductivity is low and higher.The Working environment of various complexity can be met, improve the work-ing life of product.Following numerical value is recorded under standard test condition:
These are only the preferred embodiment of the present invention, being intended to embody outstanding technique effect of the present invention and advantage, is not the restriction to technical scheme of the present invention.Those skilled in the art will appreciate that all amendments made based on the technology of the present invention content, change or substitute technology feature, all should be covered by the technology category of claims of the present invention opinion.
Claims (9)
1. zirconium mullite red brick, is characterized in that: the weight percent comprising each component of following component is:
Diameter is greater than the special grade bauxite grog that 3 millimeters are less than or equal to 5 millimeters: 5% ~ 10%;
Diameter is greater than the special grade bauxite grog that 1 millimeter is less than or equal to 3 millimeters: 15% ~ 23%;
Diameter is greater than the fused mullite that 1 millimeter is less than or equal to 3 millimeters: 15% ~ 20%;
Diameter is greater than the mullite synthesizing that 0.1 millimeter is less than or equal to 1 millimeter: 10% ~ 13%;
The mullite synthesizing that diameter is less than 0.1 millimeter: 5% ~ 8%;
Diameter is greater than 0.1 millimeter of zirconium that contains being less than or equal to 1 millimeter and is more than or equal to 65% zircon concentrate powder: 3% ~ 15%;
White clay: kaolin blending ratio is the compound clay of 3:1: 5% ~ 15%;
Silicon carbide micro-powder: 6% ~ 15%;
Yttrium oxide micro mist: 0.1% ~ 3%;
Aluminium powder: 0.1% ~ 3%;
Silica flour: 0.1% ~ 3%;
Andalusite micropowder: 2% ~ 6%;
White fused alumina micro mist: 6% ~ 10%;
Alumina powder: 2% ~ 6%;
Industrial phosphoric acid: 2% ~ 6%.
2. zirconium mullite red brick according to claim 1, it is characterized in that: the active aluminium content of described aluminium powder is more than or equal to 98%, described silica flour is metallurgy one-level, and silicone content is more than or equal to 98.5%.
3. zirconium mullite red brick according to claim 1, is characterized in that: the iron oxide content in described compound clay is less than or equal to 2%.
4. zirconium mullite red brick according to claim 1, is characterized in that: described mullite synthesizing is Al
2o
3content be more than or equal to 70% high―temperature nuclei mullite.
5. a preparation technology for zirconium mullite red brick as claimed in claim 1, is characterized in that: comprise the following steps:
Step a: diameter is greater than 3 millimeters of special grade bauxite grog, diameters being less than or equal to 5 millimeters are greater than that 1 millimeter of special grade bauxite grog, diameter being less than or equal to 3 millimeters is greater than that 1 millimeter of fused mullite, diameter being less than or equal to 3 millimeters is greater than mullite synthesizing that 0.1 millimeter of mullite synthesizing, diameter being less than or equal to 1 millimeter is less than 0.1 millimeter, diameter is greater than 0.1 millimeter and is less than or equal to 1 millimeter be more than or equal to 65% zircon concentrate powder containing zirconium and mix obtained aggregate, described mixing time is no less than 5 minutes;
Step b: compound clay, silicon carbide micro-powder, yttrium oxide micro mist, aluminium powder, silica flour, andalusite micropowder, white fused alumina micro mist, alumina powder are mixed and make auxiliary material;
Step c: the aggregate obtained by step a adds step b obtained auxiliary material mix 5 minutes ~ 8 minutes with industrial phosphoric acid after mixes 10 minutes ~ 15 minutes obtained pugs;
Steps d: the pug obtained step c is no less than the ageing mixture of 24 hours;
Step e: carry out shaping to the pug after steps d ageing mixture;
Step f: 24 hours obtained blanks are no less than to the drying at the temperature of 110 degrees Celsius ~ 120 degrees Celsius of the pug after step e is shaping;
Step g: the blank obtained by step f burns till at the temperature of 1480 degrees Celsius ~ 1510 degrees Celsius
Above-mentioned each component is all prepared by the content of weight percent in claim 1.
6. the preparation technology of zirconium mullite red brick according to claim 5, is characterized in that: the mixing time of described step b is no less than 10 minutes.
7. the preparation technology of zirconium mullite red brick according to claim 5, is characterized in that: the ageing mixture time of described steps d is 48 hours.
8. the preparation technology of zirconium mullite red brick according to claim 5, is characterized in that: the drying temperature of described step f is 120 degrees Celsius.
9. the preparation technology of zirconium mullite red brick according to claim 5, is characterized in that: the firing temperature of described step g is 1510 degrees Celsius.
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| CN104291847B (en) * | 2014-10-14 | 2016-08-31 | 淮南师范学院 | A kind of high intensity siliceous mullite brick and preparation method thereof |
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| CN107140955A (en) * | 2017-05-22 | 2017-09-08 | 攀钢冶金材料有限责任公司 | A kind of refractory brick and preparation method thereof |
| CN107352978B (en) * | 2017-08-30 | 2020-10-27 | 徐州贝克福尔节能环保技术有限公司 | High-strength anti-seepage brick and preparation process thereof |
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| CN111646807A (en) * | 2020-05-15 | 2020-09-11 | 浙江圣奥耐火材料有限公司 | Low-heat-conductivity thermal-shock-resistant wear-resistant brick and production process thereof |
| CN114380581A (en) * | 2022-01-22 | 2022-04-22 | 山东耐火材料集团有限公司 | Silicon nitride iron mullite silicon carbide brick for silicon-manganese alloy bag and preparation method thereof |
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| CN102659440A (en) * | 2012-06-02 | 2012-09-12 | 长兴盛华耐火材料有限公司 | Light silicon carbide-mullite-andalusite brick and manufacturing method for same |
| CN103351168A (en) * | 2013-05-10 | 2013-10-16 | 郑州瑞泰耐火科技有限公司 | Novel mullite brick and preparation method thereof |
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| CN103819206A (en) | 2014-05-28 |
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