CN106747512A - A kind of titanium Calcium aluminates powder and preparation method thereof - Google Patents
A kind of titanium Calcium aluminates powder and preparation method thereof Download PDFInfo
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
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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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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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
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Abstract
The present invention relates to a kind of titanium Calcium aluminates powder and preparation method thereof.Its technical scheme is：By white lime: ρ Al2O3Micro mist: the mass ratio of titanium dioxide is 1: (3.05 ~ 3.10): (3.15 ~ 3.25), by white lime, ρ Al2O3Micro mist and titanium dioxide are added in ball mill, ball milling 1 ~ 2 hour；It is placed in Muffle furnace again, 0.5 ~ 1h is calcined under the conditions of 550 ~ 600 DEG C, obtains light-burned mixed powder.By the light-burned mixed powder: the mass ratio of water is 1:（0.30~0.45）, it is levigate to granularity≤60 μm to water is added in the light-burned mixed powder；It is subsequently adding in pug mill, vacuum squeezes mud shaping, ageing mixture 24 ~ 36 hours；It is subsequently placed in high temperature furnace and is warming up to 1400 ~ 1550 DEG C, be incubated 1 ~ 3 hour, crush, obtains final product titanium Calcium aluminates powder.The present invention have process is simple and it is with low cost the characteristics of；Prepared titanium Calcium aluminates powder high conversion rate and sintering character are good.
Description
Technical field
The invention belongs to titanium calcium aluminate technical field.Specifically related to a kind of titanium Calcium aluminates powder and preparation method thereof.
Background technology
Titanium calcium aluminate is Al2O3-TiO2The thing phase of stable existence in-CaO ternary systems, with refractoriness is high, thermal conductivity factor
The features such as small and wearability is strong, is the refractory ceramics and refractory raw material of a kind of high-quality.But Al2O3-TiO2In-CaO ternary systems,
The formation of compound is influenceed and titanium calcium aluminate complicated and changeable and natural by factors such as constituent, temperature and impurity contents
Mineral there's almost no, thus less to the preparation report of titanium Calcium aluminates powder.
At present, the preparation for titanium calcium aluminate has：" one kind refining vanadium reflection inner lining of furnace titanium calcium aluminate prefabricated component and its preparation
Method "（CN201510469732.X）" a kind of bottom of steel ladle castable and preparation method thereof "（CN201510311418.9）；
Or it is aided with " the modified refractory material of a kind of titanium calcium aluminate-alumine and its preparation method and application " of high aluminium material
（CN201510013589.3）；Or introduce bonding agent and sintering aid（Wang Lifeng, waits " SiO2Micro mist addition is burnt to titanium calcium aluminate
Tie the influence of performance ",《Refractory material》, 2016,50 (3)：pp195~198+203）Deng, blended shaping, burn till, be obtained respective
The finished product of feature, but there are no report prepared by high-purity, single-phase titanium calcium aluminate.
The content of the invention
It is an object of the invention to provide a kind of process is simple and the preparation method of titanium Calcium aluminates powder with low cost.With
Titanium Calcium aluminates powder high conversion rate and sintering character prepared by the method is good.
To achieve the above object, the technical solution adopted by the present invention is comprised the concrete steps that：
The first step, by white lime: ρ-Al2O3Micro mist: the mass ratio of titanium dioxide is 1: (3.05 ~ 3.10): (3.15 ~ 3.25), will
White lime, ρ-Al2O3Micro mist and titanium dioxide are added in ball mill, and ball milling 1 ~ 2 hour obtains mixed powder.
Second step, the mixed powder is placed in Muffle furnace and is calcined, calcining heat is 550 ~ 600 DEG C, and calcination time is
0.5 ~ 1h, obtains light-burned mixed powder.
3rd step, by the light-burned mixed powder: the mass ratio of water be 1:（0.30~0.45）, to the light-burned mixed powder
Water is added in body, it is levigate to granularity≤60 μm, obtain presoma compound.
4th step, by the presoma compound add pug mill in, vacuum squeeze mud shaping, ageing mixture 24 ~ 36 hours；Put again
1400 ~ 1550 DEG C are warming up in high temperature furnace, 1 ~ 3 hour is incubated, crushed, obtain final product titanium Calcium aluminates powder.
The Ca (OH) of the white lime2Content >=98wt%.
ρ-the Al2O3The Al of micro mist2O3Content >=98wt%.
The TiO of the titanium dioxide2Content >=98wt%.
Pressure≤the 0.02Pa of the vacuum.
Due to using above-mentioned technical proposal, the present invention to have the positive effect that compared with prior art：
1st, the raw material selected by the present invention is commonly easy to get, cheap, reduces the preparation cost of titanium Calcium aluminates powder；
2nd, the present invention saves human resources, process is simple without the treatment technology of special Preparation equipment and complexity；
3rd, the present invention enhances the sintering activity of presoma powder using dry and wet is mixed with the light-burned technical scheme being combined, and improves
The sintering character of titanium Calcium aluminates powder, and then the formation of impurities phase is avoided, improve the conversion ratio of titanium calcium aluminate.
Titanium Calcium aluminates powder prepared by the present invention is after testing：Titanium aluminic acid calcium transformation ratio is 90 ~ 95%；Bulk density is
3.20~3.25g/cm3。
Therefore, the present invention have process is simple and it is with low cost the characteristics of；Prepared titanium Calcium aluminates powder high conversion rate
It is good with sintering character.
Specific embodiment
With reference to specific embodiment, the invention will be further described, not to the limit of the scope of the present invention
System.
In this specific embodiment：The Ca (OH) of the white lime2Content >=98wt%；ρ-the Al2O3The Al of micro mist2O3
Content >=98wt%；The TiO of the titanium dioxide2Content >=98wt%；Pressure≤the 0.02Pa of the vacuum.No longer gone to live in the household of one's in-laws on getting married in embodiment
State.
Embodiment 1
A kind of titanium Calcium aluminates powder and preparation method thereof.It is the step of preparation method described in the present embodiment：
The first step, by white lime: ρ-Al2O3Micro mist: the mass ratio of titanium dioxide is 1: (3.05 ~ 3.07): (3.15 ~ 3.19), will
White lime, ρ-Al2O3Micro mist and titanium dioxide are added in ball mill, and ball milling 1 ~ 2 hour obtains mixed powder.
Second step, the mixed powder is placed in Muffle furnace and is calcined, calcining heat is 550 ~ 600 DEG C, and calcination time is
0.5 ~ 1h, obtains light-burned mixed powder.
3rd step, by the light-burned mixed powder: the mass ratio of water be 1:（0.30~0.40）, to the light-burned mixed powder
Water is added in body, it is levigate to granularity≤60 μm, obtain presoma compound.
4th step, by the presoma compound add pug mill in, vacuum squeeze mud shaping, ageing mixture 24 ~ 36 hours；Put again
1400 ~ 1500 DEG C are warming up in high temperature furnace, 1 ~ 3 hour is incubated, crushed, obtain final product titanium Calcium aluminates powder.
Titanium Calcium aluminates powder prepared by the present embodiment is after testing：Titanium aluminic acid calcium transformation ratio is 90 ~ 92%；Bulk density is
3.20~3.22g/cm3。
Embodiment 2
A kind of titanium Calcium aluminates powder and preparation method thereof.It is the step of preparation method described in the present embodiment：
The first step, by white lime: ρ-Al2O3Micro mist: the mass ratio of titanium dioxide is 1: (3.06 ~ 3.08): (3.17 ~ 3.21), will
White lime, ρ-Al2O3Micro mist and titanium dioxide are added in ball mill, and ball milling 1 ~ 2 hour obtains mixed powder.
Second step, the mixed powder is placed in Muffle furnace and is calcined, calcining heat is 550 ~ 600 DEG C, and calcination time is
0.5 ~ 1h, obtains light-burned mixed powder.
3rd step, by the light-burned mixed powder: the mass ratio of water be 1:（0.30~0.40）, to the light-burned mixed powder
Water is added in body, it is levigate to granularity≤60 μm, obtain presoma compound.
4th step, by the presoma compound add pug mill in, vacuum squeeze mud shaping, ageing mixture 24 ~ 36 hours；Put again
1400 ~ 1500 DEG C are warming up in high temperature furnace, 1 ~ 3 hour is incubated, crushed, obtain final product titanium Calcium aluminates powder.
Titanium Calcium aluminates powder prepared by the present embodiment is after testing：Titanium aluminic acid calcium transformation ratio is 91 ~ 93%；Bulk density is
3.21~3.23g/cm3。
Embodiment 3
A kind of titanium Calcium aluminates powder and preparation method thereof.It is the step of preparation method described in the present embodiment：
The first step, by white lime: ρ-Al2O3Micro mist: the mass ratio of titanium dioxide is 1: (3.07 ~ 3.09): (3.19 ~ 3.23), will
White lime, ρ-Al2O3Micro mist and titanium dioxide are added in ball mill, and ball milling 1 ~ 2 hour obtains mixed powder.
Second step, the mixed powder is placed in Muffle furnace and is calcined, calcining heat is 550 ~ 600 DEG C, and calcination time is
0.5 ~ 1h, obtains light-burned mixed powder.
3rd step, by the light-burned mixed powder: the mass ratio of water be 1:（0.35~0.45）, to the light-burned mixed powder
Water is added in body, it is levigate to granularity≤60 μm, obtain presoma compound.
4th step, by the presoma compound add pug mill in, vacuum squeeze mud shaping, ageing mixture 24 ~ 36 hours；Put again
1450 ~ 1550 DEG C are warming up in high temperature furnace, 1 ~ 3 hour is incubated, crushed, obtain final product titanium Calcium aluminates powder.
Titanium Calcium aluminates powder prepared by the present embodiment is after testing：Titanium aluminic acid calcium transformation ratio is 92 ~ 94%；Bulk density is
3.22~3.24g/cm3。
Embodiment 4
A kind of titanium Calcium aluminates powder and preparation method thereof.It is the step of preparation method described in the present embodiment：
The first step, by white lime: ρ-Al2O3Micro mist: the mass ratio of titanium dioxide is 1: (3.08 ~ 3.10): (3.21 ~ 3.25), will
White lime, ρ-Al2O3Micro mist and titanium dioxide are added in ball mill, and ball milling 1 ~ 2 hour obtains mixed powder.
Second step, the mixed powder is placed in Muffle furnace and is calcined, calcining heat is 550 ~ 600 DEG C, and calcination time is
0.5 ~ 1h, obtains light-burned mixed powder.
3rd step, by the light-burned mixed powder: the mass ratio of water be 1:（0.35~0.45）, to the light-burned mixed powder
Water is added in body, it is levigate to granularity≤60 μm, obtain presoma compound.
4th step, by the presoma compound add pug mill in, vacuum squeeze mud shaping, ageing mixture 24 ~ 36 hours；Put again
1450 ~ 1550 DEG C are warming up in high temperature furnace, 1 ~ 3 hour is incubated, crushed, obtain final product titanium Calcium aluminates powder.
Titanium Calcium aluminates powder prepared by the present embodiment is after testing：Titanium aluminic acid calcium transformation ratio is 93 ~ 95%；Bulk density is
3.23~3.25g/cm3。
This specific embodiment has the positive effect that compared with prior art：
1st, the raw material selected by this specific embodiment is commonly easy to get, cheap, reduces being prepared into for titanium Calcium aluminates powder
This；
2nd, this specific embodiment saves human resources, technique letter without the treatment technology of special Preparation equipment and complexity
It is single；
3rd, this specific embodiment is mixed with the light-burned technical scheme being combined using dry and wet, and the sintering for enhancing presoma powder is lived
Property, improves the sintering character of titanium Calcium aluminates powder, and then avoids the formation of impurities phase, improves the conversion of titanium calcium aluminate
Rate.
Titanium Calcium aluminates powder prepared by this specific embodiment is after testing：Titanium aluminic acid calcium transformation ratio is 90 ~ 95%；Volume
Density is 3.20 ~ 3.25g/cm3。
Therefore, this specific embodiment have process is simple and it is with low cost the characteristics of；Prepared titanium Calcium aluminates powder
High conversion rate and sintering character are good.
Claims (6)
1. a kind of preparation method of titanium Calcium aluminates powder, it is characterised in that the preparation method is comprised the concrete steps that：
The first step, by white lime: ρ-Al2O3Micro mist: the mass ratio of titanium dioxide is 1: (3.05 ~ 3.10): (3.15 ~ 3.25), will be ripe
Lime, ρ-Al2O3Micro mist and titanium dioxide are added in ball mill, and ball milling 1 ~ 2 hour obtains mixed powder；
Second step, by the mixed powder be placed in Muffle furnace calcine, calcining heat be 550 ~ 600 DEG C, calcination time be 0.5 ~
1h, obtains light-burned mixed powder；
3rd step, by the light-burned mixed powder: the mass ratio of water be 1:（0.30~0.45）, in the light-burned mixed powder
Water is added, it is levigate to granularity≤60 μm, obtain presoma compound；
4th step, by the presoma compound add pug mill in, vacuum squeeze mud shaping, ageing mixture 24 ~ 36 hours；Height is placed in again
1400 ~ 1550 DEG C are warming up in warm stove, 1 ~ 3 hour is incubated, crushed, obtain final product titanium Calcium aluminates powder.
2. the preparation method of titanium Calcium aluminates powder according to claim 1, it is characterised in that the Ca (OH) of the white lime2
Content >=98wt%.
3. the preparation method of titanium Calcium aluminates powder according to claim 1, it is characterised in that the ρ-Al2O3Micro mist
Al2O3Content >=98wt%.
4. the preparation method of titanium Calcium aluminates powder according to claim 1, it is characterised in that the TiO of the titanium dioxide2Content
≥98wt%。
5. the preparation method of titanium Calcium aluminates powder according to claim 1, it is characterised in that the pressure of the vacuum≤
0.02Pa。
6. a kind of titanium Calcium aluminates powder, it is characterised in that the titanium Calcium aluminates powder is according to any one of claim 1 ~ 5
Titanium Calcium aluminates powder prepared by the preparation method of described titanium Calcium aluminates powder.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362708A (en) * | 2020-03-13 | 2020-07-03 | 武汉科技大学 | Refractory material for smelting titanium-aluminum alloy and preparation method thereof |
| CN111377727A (en) * | 2020-03-13 | 2020-07-07 | 武汉科技大学 | Titanium-containing calcium hexaluminate material and preparation method thereof |
| CN111377728A (en) * | 2020-03-13 | 2020-07-07 | 武汉科技大学 | High-purity titanium-containing calcium hexaluminate material and preparation method thereof |
| CN111393175A (en) * | 2020-03-13 | 2020-07-10 | 武汉科技大学 | Refractory castable for titanium-aluminum alloy smelting and preparation method thereof |
| GB2601211A (en) * | 2020-03-13 | 2022-05-25 | Univ Wuhan Science & Tech | Refractory material for smelting titanium aluminium alloy and method for preparation thereof |
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| CN111362708A (en) * | 2020-03-13 | 2020-07-03 | 武汉科技大学 | Refractory material for smelting titanium-aluminum alloy and preparation method thereof |
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| CN111393175A (en) * | 2020-03-13 | 2020-07-10 | 武汉科技大学 | Refractory castable for titanium-aluminum alloy smelting and preparation method thereof |
| WO2021179844A1 (en) * | 2020-03-13 | 2021-09-16 | 武汉科技大学 | Refractory material for smelting titanium aluminum alloy and method for preparation thereof |
| CN111377728B (en) * | 2020-03-13 | 2022-04-29 | 武汉科技大学 | High-purity titanium-containing calcium hexaluminate material and preparation method thereof |
| CN111393175B (en) * | 2020-03-13 | 2022-04-29 | 武汉科技大学 | Refractory castable for titanium-aluminum alloy smelting and preparation method thereof |
| CN111362708B (en) * | 2020-03-13 | 2022-05-24 | 武汉科技大学 | Refractory material for smelting titanium-aluminum alloy and preparation method thereof |
| GB2601211A (en) * | 2020-03-13 | 2022-05-25 | Univ Wuhan Science & Tech | Refractory material for smelting titanium aluminium alloy and method for preparation thereof |
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| GB2601211B (en) * | 2020-03-13 | 2024-01-31 | Univ Wuhan Science & Tech | Refractory material for smelting titanium-aluminium alloy and method of preparing same |
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