CN107915492A - Cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick and preparation method thereof - Google Patents
Cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick and preparation method thereof Download PDFInfo
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- CN107915492A CN107915492A CN201711253652.6A CN201711253652A CN107915492A CN 107915492 A CN107915492 A CN 107915492A CN 201711253652 A CN201711253652 A CN 201711253652A CN 107915492 A CN107915492 A CN 107915492A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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- C04B33/36—Reinforced clay-wares
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5276—Whiskers, spindles, needles or pins
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick and preparation method thereof, which includes：1）Magnesium aluminate spinel, zirconium oxide, polyvinylpyrrolidone, aluminium borate whisker are subjected to ball milling so that ball milling composition is made；2）Kaolin, pyrophillite, aluminium ore slag, boron carbide, waterglass, zircon sand, ball milling composition, calcium lignosulfonate, sodium metasilicate, cyclodextrin and water are mixed, are aged so that mixture is made；3）Mixture is suppressed so that adobe is made；4）Adobe is dried, is fired, is cooled down so that cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick is made.The clinkering zone has excellent thermal shock resistance with refractory brick.
Description
Technical field
The present invention relates to refractory brick, and in particular, to a kind of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick
And preparation method thereof.
Background technology
Cement rotary kiln experienced very long differentiation and evolution, at present cement industry kiln mainly by kilneye, descended
Cross band, clinkering zone, lower intermediate zone and set of safety belts into；Since clinkering zone and the working environment of intermediate zone are more severe, so need
Refractory brick is set on clinkering zone and the kiln wall of intermediate zone.Refractory brick in ideal needs to have the characteristics that：1）Excellent
Hang kliner coating performance；2）Highly resistance thermal chemical reaction ability；3）Excellent anti-slag ability；4）Excellent mechanical strength；5）Excellent heat
Shake stability.But the thermal shock resistance of existing refractory brick is poor, easily cracks and then greatly affected its service life.
The content of the invention
The object of the present invention is to provide a kind of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick and its preparation side
Method, clinkering zone refractory brick has excellent thermal shock resistance, while there is the preparation method process to be simply easy to get with raw material
The advantages of.
To achieve these goals, the present invention provides a kind of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick
Preparation method, which includes：
1）Magnesium aluminate spinel, zirconium oxide, polyvinylpyrrolidone, aluminium borate whisker are subjected to ball milling so that ball milling composition is made；
2）By kaolin, pyrophillite, aluminium ore slag, boron carbide, waterglass, zircon sand, ball milling composition, calcium lignosulfonate, silicon
Sour sodium, cyclodextrin and water are mixed, are aged so that mixture is made；
3）Mixture is suppressed so that adobe is made；
4）Adobe is dried, is fired, is cooled down so that cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick is made；
Wherein, the particle that magnesium aluminate spinel is 0.06-0.08mm by average grain diameter particle A, average grain diameter are 0.15-0.25mm
B and average grain diameter are the particle C of 1.5-2.2mm according to 10：15-35：The weight ratio composition of 6-10.
Present invention also offers a kind of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick, the cement kiln clinkering zone
It is prepared with zirconium oxide composite magnesium aluminate spinel brick by upper preparation method.
Have in refractory brick made from the combination that above-mentioned technical proposal, the present invention pass through each raw material and each operation
Excellent thermal shock resistance, while the preparation method has the advantages that process is simple and raw material is easy to get.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The present invention provides a kind of preparation method of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick, the preparation
Method includes：
1）Magnesium aluminate spinel, zirconium oxide, polyvinylpyrrolidone, aluminium borate whisker are subjected to ball milling so that ball milling composition is made；
2）By kaolin, pyrophillite, aluminium ore slag, boron carbide, waterglass, zircon sand, ball milling composition, calcium lignosulfonate, silicon
Sour sodium, cyclodextrin and water are mixed, are aged so that mixture is made；
3）Mixture is suppressed so that adobe is made；
4）Adobe is dried, is fired, is cooled down so that cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick is made；
Wherein, the particle that magnesium aluminate spinel is 0.06-0.08mm by average grain diameter particle A, average grain diameter are 0.15-0.25mm
B and average grain diameter are the particle C of 1.5-2.2mm according to 10：15-35：The weight ratio composition of 6-10.
In the step 1 of the present invention）In, the particle diameter of each material can select in wide scope, but in order to enable be made
Refractory brick there is more excellent thermal shock resistance, it is preferable that in step 1）In, the average grain diameter of the magnesium aluminate spinel is
0.11-0.18mm, the average length of the aluminium borate whisker is 30-50 μm.
In the step 1 of the present invention）In, the dosage of each material can select in wide scope, but in order to enable be made
Refractory brick there is more excellent thermal shock resistance, it is preferable that in step 1）In, magnesium aluminate spinel, zirconium oxide, polyvinyl pyrrole
Alkanone, the weight ratio of aluminium borate whisker are 10：5-6.5：3-4：1-3.
In the step 1 of the present invention）In, the actual conditions of ball milling can select in wide scope, but in order to enable system
The refractory brick obtained has more excellent thermal shock resistance, it is preferable that ball milling meets the following conditions：The mass ratio of big ball and bead is
4：The mass ratio of 2-2.5, abrading-ball and material is 5：1.5-2, rotating speed 2000-2500rpm, Ball-milling Time 45-60min.
In the step 2 of the present invention）In, the dosage of each material can select in wide scope, but in order to enable be made
Refractory brick there is more excellent thermal shock resistance, it is preferable that in step 2）In, kaolin, pyrophillite, aluminium ore slag, boron carbide,
Waterglass, zircon sand, ball milling composition, calcium lignosulfonate, sodium metasilicate, the weight ratio of cyclodextrin and water are 10：8-10：0.9-
1.4：0.2-0.6：5-8：4-7：8-12：2-4：3-5：2-5：30-50.
In the step 2 of the present invention）In, the condition of mixing can select in wide scope, but in order to enable obtained
Refractory brick has more excellent thermal shock resistance, it is preferable that in step 2）In, mixing meets the following conditions：Mixing temperature is 30-
40 DEG C, incorporation time 40-60min.
In the step 2 of the present invention）In, the condition of ageing can select in wide scope, but in order to enable obtained
Refractory brick has more excellent thermal shock resistance, it is preferable that in step 2）In, ageing meets the following conditions：Aging Temperature is 45-
60 DEG C, digestion time 10-20h.
In the step 2 of the present invention）In, the particle diameter of each material can select in wide scope, but in order to enable be made
Refractory brick there is more excellent thermal shock resistance, it is preferable that in step 2）In, kaolin, pyrophillite, the average grain of aluminium ore slag
Footpath is each independently 1.1-1.5mm, and boron carbide, waterglass, the average grain diameter of zircon sand are each independently 2.5-3mm.
In the step 3 of the present invention）In, the condition of compacting can select in wide scope, but in order to enable obtained
Refractory brick has more excellent thermal shock resistance, it is preferable that in step 3）In, the process of compacting is：First by mixture in 20-
20-30min is suppressed under 25MPa, 40-60min is then suppressed under 40-60MPa, most after suppressing 10- under 10-15MPa
15min。
In the step 3 of the present invention）In, dry condition can select in wide scope, but in order to enable obtained
Refractory brick has more excellent thermal shock resistance, it is preferable that in step 4）In, drying meets the following conditions：Drying temperature is
125-140 DEG C, drying time 30-40h.
In the step 4 of the present invention）In, the condition of firing can select in wide scope, but in order to enable obtained
Refractory brick has more excellent thermal shock resistance, it is preferable that in step 4）In, fire and be：First from 15-35 DEG C with 0.5-1 DEG C/
Min is warming up to 220-280 DEG C and keeps the temperature 1-2h, is then warming up to 1200-1300 DEG C with 2-2.4 DEG C/min and keeps the temperature 3-5h, most
1680-1750 DEG C is warming up to 1-1.5 DEG C/min and keep the temperature 1-2h afterwards.
In the step 4 of the present invention）In, the mode of cooling can select in wide scope, but in order to enable obtained
Refractory brick has more excellent thermal shock resistance, it is preferable that cooling is carried out by the way of natural cooling.
Present invention also offers a kind of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick, the cement kiln clinkering zone
It is prepared with zirconium oxide composite magnesium aluminate spinel brick by upper preparation method.
The present invention will be described in detail by way of examples below.
Embodiment 1
1）By magnesium aluminate spinel, zirconium oxide（Average grain diameter is 0.15mm）Polyvinylpyrrolidone, aluminium borate whisker（Average length
For 40 μm）According to 10：5.5：3.5：2 weight ratio carries out ball milling so that ball milling composition is made；
2）By kaolin（Average grain diameter is 1.3mm）, pyrophillite（Average grain diameter is 1.3mm）, aluminium ore slag（Average grain diameter is
1.4mm）, boron carbide（Average grain diameter is 2.8mm）, waterglass（Average grain diameter is 2.7mm）, zircon sand（Average grain diameter is
2.9mm）, ball milling composition, calcium lignosulfonate, sodium metasilicate, cyclodextrin and the water is according to 10：9：1.2：0.4：7：6：10：
3：4：4：40 weight ratio is mixed（Mixing temperature is 35 DEG C, incorporation time 50min）, ageing（Aging Temperature is 50 DEG C,
Digestion time is 15h）Mixture is made；
3）By the mixture prior to suppressing 25min under 23MPa, 50min is then suppressed under 50MPa, is most pushed after 13MPa
13min processed is suppressed so that adobe is made；
4）The adobe is dried（Drying temperature is 130 DEG C, drying time 35h）, fire；Then by dried brick
Base is first warming up to 260 DEG C with 0.8 DEG C/min from 25 DEG C and keeps the temperature 1.5h, then is warming up to 125 DEG C with 2.2 DEG C/min and keeps the temperature 4h,
Then 1700 DEG C are warming up to 1.3 DEG C/min and keep the temperature 1.5h；Finally cooling is used so that the cement kiln clinkering zone oxygen is made
Change zirconium composite magnesium aluminate spinel brick A1；
Wherein, the particle B peace that the magnesium aluminate spinel is 0.07mm by average grain diameter particle A, average grain diameter are 0.20mm
Equal particle diameter is the particle C of 1.8mm according to 10：25：8 weight ratio composition.
Embodiment 2
1）By magnesium aluminate spinel, zirconium oxide（Average grain diameter is 0.11mm）Polyvinylpyrrolidone, aluminium borate whisker（Average length
For 30 μm）According to 10：5：3：1 weight ratio carries out ball milling so that ball milling composition is made；
2）By kaolin（Average grain diameter is 1.1mm）, pyrophillite（Average grain diameter is 1.1mm）, aluminium ore slag（Average grain diameter is
1.1mm）, boron carbide（Average grain diameter is 2.5mm）, waterglass（Average grain diameter is 2.5mm）, zircon sand（Average grain diameter is
2.5mm）, ball milling composition, calcium lignosulfonate, sodium metasilicate, cyclodextrin and the water is according to 10：8：0.9：0.2：5：4：8：2：
3：2：30 weight ratio is mixed（Mixing temperature is 30 DEG C, incorporation time 40min）, ageing（Aging Temperature is 45 DEG C, old
The change time is 10h）Mixture is made；
3）By the mixture prior to suppressing 20min under 20MPa, 40min is then suppressed under 40MPa, is most pushed after 10MPa
10min processed is suppressed so that adobe is made；
4）The adobe is dried（Drying temperature is 125 DEG C, drying time 30h）, fire；Then by dried brick
Base is first warming up to 220 DEG C with 0.5 DEG C/min from 15 DEG C and keeps the temperature 1h, then is warming up to 1200 DEG C with 2 DEG C/min and keeps the temperature 3h, then
1680 DEG C are warming up to 1 DEG C/min and keep the temperature 1h；Finally cooling uses compound the cement kiln clinkering zone zirconium oxide is made
Mg-Al spinel brick A2；
Wherein, the particle B peace that the magnesium aluminate spinel is 0.06mm by average grain diameter particle A, average grain diameter are 0.15mm
Equal particle diameter is the particle C of 1.5mm according to 10：15：6 weight ratio composition.
Embodiment 3
1）By magnesium aluminate spinel, zirconium oxide（Average grain diameter is 0.18mm）Polyvinylpyrrolidone, aluminium borate whisker（Average length
For 50 μm）According to 10：6.5：4：3 weight ratio carries out ball milling so that ball milling composition is made；
2）By kaolin（Average grain diameter is 1.5mm）, pyrophillite（Average grain diameter is 1.5mm）, aluminium ore slag（Average grain diameter is
1.5mm）, boron carbide（Average grain diameter is 3mm）, waterglass（Average grain diameter is 3mm）, zircon sand（Average grain diameter is 3mm）, it is described
Ball milling composition, calcium lignosulfonate, sodium metasilicate, cyclodextrin and water are according to 10：10：1.4：0.6：8：7：12：4：5：5：50
Weight ratio is mixed（Mixing temperature is 40 DEG C, incorporation time 60min）, ageing（Aging Temperature is 60 DEG C, and digestion time is
20h）Mixture is made；
3）By the mixture prior to suppressing 30min under 25MPa, 60min is then suppressed under 60MPa, is most pushed after 15MPa
15min processed is suppressed so that adobe is made；
4）The adobe is dried（Drying temperature is 140 DEG C, drying time 40h）, fire；Then by dried brick
Base is first warming up to 280 DEG C with 1 DEG C/min from 35 DEG C and keeps the temperature 2h, then is warming up to 1300 DEG C with 2.4 DEG C/min and keeps the temperature 5h, then
1750 DEG C are warming up to 1.5 DEG C/min and keep the temperature 2h；Finally cooling is used is answered so that the cement kiln clinkering zone is made with zirconium oxide
Close Mg-Al spinel brick A3；
Wherein, the particle B peace that the magnesium aluminate spinel is 0.08mm by average grain diameter particle A, average grain diameter are 0.25mm
Equal particle diameter is the particle C of 2.2mm according to 10：35：10 weight ratio composition.
Comparative example 1
Method according to embodiment 1 carries out that zirconium oxide composite magnesium aluminate spinel brick B1 is made, unlike, step 1）Ball is not carried out
Grinder sequence.
Comparative example 2
Method according to embodiment 1 carries out that zirconium oxide composite magnesium aluminate spinel brick B2 is made, unlike, step 1）Magnesium is not used
Aluminate.
Comparative example 3
Method according to embodiment 1 carries out that zirconium oxide composite magnesium aluminate spinel brick B3 is made, unlike, step 1）Oxygen is not used
Change zirconium.
Comparative example 4
Method according to embodiment 1 carries out that zirconium oxide composite magnesium aluminate spinel brick B4 is made, unlike, step 1）Boron is not used
Sour al whisker.
Detect example 1
After zirconium oxide composite magnesium aluminate spinel brick is risen to 1100 DEG C according to the YB/T 376.1-1995 methods recorded, water cooling, instead
Repetition measurement examination produces macroscopic cracking up to material, then records the number of water cooling；Concrete outcome is shown in Table 1.
Table 1
| Zirconium oxide composite magnesium aluminate spinel brick | A1 | A2 | A3 | B1 | B2 | B3 | B4 |
| The number of water cooling/time | 18 | 16 | 15 | 6 | 8 | 11 | 9 |
The preferred embodiment of the present invention described in detail above, still, the tool during present invention is not limited to the embodiments described above
Body details, in the range of the technology design of the present invention, can carry out a variety of simple variants, these letters to technical scheme
Monotropic type belongs to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
- A kind of 1. preparation method of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick, it is characterised in that the preparation Method includes：1）Magnesium aluminate spinel, zirconium oxide, polyvinylpyrrolidone, aluminium borate whisker are subjected to ball milling so that ball milling composition is made；2）By kaolin, pyrophillite, aluminium ore slag, boron carbide, waterglass, zircon sand, the ball milling composition, lignin sulfonic acid Calcium, sodium metasilicate, cyclodextrin and water are mixed, are aged so that mixture is made；3）The mixture is suppressed so that adobe is made；4）The adobe is dried, is fired, is cooled down so that the cement kiln clinkering zone zirconium oxide composite magnesium aluminate point crystalline substance is made Stone brick；Wherein, particle B that the zirconium oxide is 15-20nm by average grain diameter particle A, average grain diameter are 35-50nm and average Particle diameter is the particle C of 65-70mm according to 10：15-35：The weight ratio composition of 6-10.
- 2. preparation method according to claim 1, wherein, in step 1）In, the magnesium aluminate spinel, zirconium oxide, poly- second Alkene pyrrolidone, the weight ratio of aluminium borate whisker are 10：5-6.5：3-4：1-3；Preferably, the average grain diameter of the magnesium aluminate spinel is 0.11-0.18mm, and the average length of the aluminium borate whisker is 30-50μm；It is highly preferred that the ball milling meets the following conditions：The mass ratio of big ball and bead is 4：The matter of 2-2.5, abrading-ball and material Amount is than being 5：1.5-2, rotating speed 2000-2500rpm, Ball-milling Time 45-60min.
- 3. preparation method according to claim 1 or 2, wherein, in step 2）In, the kaolin, pyrophillite, aluminium ore Slag, boron carbide, waterglass, zircon sand, the ball milling composition, calcium lignosulfonate, sodium metasilicate, the weight ratio of cyclodextrin and water For 10：8-10：0.9-1.4：0.2-0.6：5-8：4-7：8-12：2-4：3-5：2-5：30-50.
- 4. preparation method according to claim 3, wherein, in step 2）In, the mixing meets the following conditions：Mixing temperature Spend for 30-40 DEG C, incorporation time 40-60min.
- 5. preparation method according to claim 3, wherein, in step 2）In, the ageing meets the following conditions：Ageing temperature Spend for 45-60 DEG C, digestion time 10-20h.
- 6. preparation method according to claim 3, wherein, in step 2）In, the kaolin, pyrophillite, aluminium ore slag Average grain diameter is each independently 1.1-1.5mm, and the boron carbide, waterglass, the average grain diameter of zircon sand are each independently 2.5-3mm。
- 7. the preparation method according to any one in claim 1-2,4-6, wherein, in step 3）In, the compacting Process is：The mixture is first suppressed into 20-30min under 20-25MPa, 40-60min is then suppressed under 40-60MPa, most After suppressing 10-15min under 10-15MPa.
- 8. preparation method according to claim 7, wherein, in step 4）In, the drying meets the following conditions：Dry temperature Spend for 125-140 DEG C, drying time 30-40h.
- 9. preparation method according to claim 7, wherein, in step 4）In, the firing is：First from 15-35 DEG C with 0.5-1 DEG C/min is warming up to 220-280 DEG C and keeps the temperature 1-2h, is then warming up to 1200-1300 DEG C with 2-2.4 DEG C/min and keeps the temperature 3-5h, is finally warming up to 1680-1750 DEG C with 1-1.5 DEG C/min and keeps the temperature 1-2h；Preferably, the cooling is carried out by the way of natural cooling.
- 10. a kind of cement kiln clinkering zone zirconium oxide composite magnesium aluminate spinel brick, it is characterised in that the cement kiln clinkering zone is used Zirconium oxide composite magnesium aluminate spinel brick is prepared by the preparation method described in any one in claim 1-9.
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Cited By (2)
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| CN110156481A (en) * | 2019-04-08 | 2019-08-23 | 启东市聚旺铸造有限公司 | Refractory material prepared by using investment casting waste sand and preparation method of refractory material |
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