CN115650768B - Preparation method of heat-insulating radiation material prepared from zirconia polishing powder waste - Google Patents
Preparation method of heat-insulating radiation material prepared from zirconia polishing powder waste Download PDFInfo
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Abstract
The invention provides a preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste, which comprises the following steps: sieving zirconia polishing powder waste, and then drying and mixing with rare earth carbonate to obtain precursor powder; the precursor powder is burnt and insulated to obtain (La) with pyrochlore structure 0.5+x Sm 0.5‑x ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder, wherein x= -0.5, 0 or 0.5; dissolving a dispersing agent in water, fully mixing, adding the powder, stirring, grinding, and obtaining slurry after grinding; and mixing and stirring the slurry and the binder solution to obtain the heat-insulating radiation material. The heat-insulating radiation material prepared by using the zirconia polishing powder waste organically combines the zirconia polishing powder waste with the rare earth carbonate, and the prepared heat-insulating radiation material can reduce energy consumption by more than 15% when being applied to a high-temperature kiln.
Description
Technical Field
The invention belongs to the field of comprehensive utilization of waste resources, and particularly relates to a preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste.
Background
Zirconia has the characteristics of high melting point, high hardness, corrosion resistance, wear resistance, excellent chemical stability and the like, and has wide application prospect in the fields of aerospace, metallurgy, chemical industry, electronics and the like.
At present, polishing powder is generally divided into rare earth polishing powder, zirconia polishing powder, alumina polishing powder, silica polishing powder and the like, and the rare earth polishing powder has the advantages of high polishing speed, high precision, easiness in cleaning, small pollution and the like because different polishing powder has different polishing capacities; zirconia polishing powder has a hardness equivalent to that of ceria, but has a slightly poorer polishing performance than rare earth polishing powder; the alumina polishing powder has high hardness and good cutting force relative to zirconia, but is easy to scratch the surface of a polished object; the silicon oxide polishing powder has the advantages of small hardness, good dispersibility and the like, but has low polishing efficiency.
The patent CN 105712399B discloses a preparation method of zirconium dioxide polishing powder, synthesizes single zirconium dioxide polishing powder with controllable crystal forms, and polishes glass materials to achieve ideal polishing effect; the zirconia polishing powder is also applied to polishing of materials such as aluminum alloy, stainless steel, crystal, stone and the like.
Because zirconia is a scarce resource, the recycled zirconia and the composite thereof have great value, the value of the recycled zirconia is continuously exerted, and the recycled zirconia is subjected to secondary development and utilization, thereby having important significance of saving resources and protecting environment.
The patent CN 102531588B discloses a method for preparing zirconia ceramics by recycling zirconia ceramic grinding waste, wherein the waste generated by zirconia ceramic grinding treatment is used for removing metal impurities such as copper, iron and the like by acid and an oxidant, and then rare earth oxide is added to prepare a ceramic product through mixing and sintering; patent CN 108529673B invents a method for producing zirconium dioxide nano powder by using zirconium dioxide sintering waste; patent CN 113292336A discloses a method for recycling zirconia ceramic waste, which is to recycle zirconia ceramic waste by a physical method and prepare a zirconia ceramic device with excellent performance after processing. The methods generally have the problems of long process flow, complex process, low recycling rate and the like, and are difficult to generally apply industrially.
Disclosure of Invention
In view of this, the present invention aims to propose a method for preparing a heat-insulating radiation material by using zirconia polishing powder waste.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
step (1) pretreatment: sieving zirconia polishing powder waste, and then drying and mixing with rare earth carbonate to obtain precursor powder;
preparing radiation powder in the step (2): the precursor powder is burnt and insulated to obtain (La) with pyrochlore structure 0.5+x Sm 0.5-x ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder, wherein x= -0.5, 0 or 0.5;
and (3) preparing radiation slurry: dissolving a dispersing agent in water, fully mixing, adding the powder, stirring, grinding, and obtaining slurry after grinding;
preparing a radiation material in the step (4): and mixing and stirring the slurry and the binder solution to obtain the heat-insulating radiation material prepared by using the zirconia polishing powder waste.
Further, the zirconia polishing powder waste material in the step (1) contains ZrO 2 50-65%, polishing impurities 1-5%, and the balance being water; the rare earth carbonate in the step (1) is at least one of cerium carbonate, lanthanum carbonate or samarium carbonate.
Further, the temperature of the drying step in the step (1) is 180-220 ℃ and the time is 1-3 hours; the mixing step in the step (1) is carried out for 0.5-1.5 hours.
Further, the firing temperature in the step (2) is 1450-1550 ℃; the time of the heat preservation step in the step (2) is 2-4 hours.
Further, the dispersing agent in the step (3) is at least one of BYK-190, RT-8040 or RT-8022; the mass ratio of the water, the dispersing agent and the powder in the step (3) is 1:0.005-0.15:1-2.
Further, the slurry in the step (3) has a powder particle size D 50 ≤1μm。
Further, the mass ratio of the sizing agent to the binder in the step (4) is 1:1-2; the binder solution in the step (4) is prepared from (La) 0.36 Ce 0.64 )PO 4 With Al (H) 2 PO 4 ) 3 Mixing, wherein, (La 0.36 Ce 0.64 )PO 4 With Al (H) 2 PO 4 ) 3 The mass ratio of (2) is 1:10-30, (La) 0.36 Ce 0.64 )PO 4 With Al (H) 2 PO 4 ) 3 The sum of the masses of (2) is 45-60% of the mass of the binder solution.
A heat-insulating radiation material prepared by using zirconia polishing powder waste is prepared by the preparation method.
The application of the heat-insulating radiation material prepared by using the zirconia polishing powder waste is that the heat-insulating radiation material is applied to the preparation of industrial kilns.
The doping of the A site and the B site of the rare earth zirconate can enhance phonon scattering, the intensity of phonon scattering determines the heat conductivity of the material, the phonon scattering is aggravated to be beneficial to reducing the heat conductivity of the material, and the heat insulation effect is optimal (La) 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Thermal conductivity is significantly lower than La 2 (Zr 0.7 Ce 0.3 ) 2 O 7 And Sm 2 (Zr 0.7 Ce 0.3 ) 2 O 7 But La 2 (Zr 0.7 Ce 0.3 ) 2 O 7 And Sm 2 (Zr 0.7 Ce 0.3 ) 2 O 7 The thermal conductivity is in the range of 0.76W/(m.k) -and 1.04W/(m.k) at the working temperature of 1200 ℃, and the heat insulation performance is good; the doped lattices of the A site and the B site of the rare earth zirconate are distorted, so that the radiation performance of the material is improved, and the optimal infrared emissivity is (La 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 The method comprises the steps of carrying out a first treatment on the surface of the The three kinds of zirconic acid rare earth are pyrochlore structures, and do not generate phase change between the high temperature of 1200 ℃ and the melting point; the carbonic acid rare earth releases CO at high temperature 2 The gas is easy to prepare powder materials, and the reaction temperature for generating a pyrochlore structure is reduced; aluminum, iron, copper and the like contained in the polishing impurities in the waste material have very high radiation performance, and atoms are replaced with the rare earth zirconate in the high-temperature reaction process to generate lattice defects, so that the radiation performance at infrared wavelength is enhanced, and the heat-insulating radiation material performance of the powder is improved.
Compared with the prior art, the invention has the following advantages:
the heat-insulating radiation material prepared by using the zirconia polishing powder waste organically combines the zirconia polishing powder waste with the rare earth carbonate, and the prepared heat-insulating radiation material can reduce energy consumption by more than 15% when applied to a high-temperature kiln, and simultaneously promote complete combustion of coal gas, thereby realizing harmless, efficient and resource utilization of the zirconia polishing powder waste; the polishing impurity in the waste material reacts with the rare earth zirconate to generate lattice defects and oxygen vacancies, so that the heat insulation radiation performance of the material is improved; the zirconia polishing powder waste is recycled, so that precious zirconium resources are recycled, and the problems of environmental pollution and potential safety hazard caused by waste piling are solved; the zirconia polishing powder waste is adopted as the raw material of the heat insulation radiation material, and the production cost is obviously superior to other heat insulation radiation materials; simple process, low production cost and easy control of industrial production.
Drawings
FIG. 1 shows a heat insulating radiation material (La) 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Is a XRD pattern of (C).
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
Example 1
A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
(1) Batching and pretreatment: sieving zirconia polishing powder waste to remove large particles and foreign matters, and mixing the sieved waste with lanthanum carbonate, samarium carbonate and cerium carbonate according to the formula (La) 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Adding the stoichiometric amount into a drying kiln, drying at 200deg.C for 2 hr, adding the dried powder into a mixer, and mixing for 1 hr to obtainTo the mixed precursor;
(2) Preparing powder: the precursor is kept at the firing temperature of 1500 ℃ for 3 hours to obtain (La) with pyrochlore structure 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder;
(3) And (3) preparing slurry: adding 100 parts of water and 0.5 part of dispersant BYK190 into a size mixing tank, fully stirring, adding 100 parts of powder, stirring for 0.5h to form slurry, starting a size mixing tank and a ball mill communication pump, circularly grinding the slurry through the ball mill, and stopping grinding when the particle size D50 of the powder in the slurry reaches 1 mu m to obtain slurry;
(4) Preparing a heat-insulating radiation material: 100 parts of slurry and 100 parts of binder are respectively added into a dispersing tank, wherein the binder comprises 5% by mass (La) 0.36 Ce 0.64 )PO 4 With mass fraction of 50% Al (H) 2 PO 4 ) 3 The mixture is mixed, and the slurry and the adhesive are stirred and dispersed for 2 hours at high speed to obtain the heat-insulating radiation material;
(5) And (3) testing the performance of the heat-insulating radiation material: the infrared emissivity tester is adopted to test that the total-wave integral emissivity of the heat insulation radiation material is higher than 0.94 at the working temperature of 25-1400 ℃ and the heat conductivity at 1200 ℃ is 0.54W/(m.k), and the energy consumption of the wall spraying heat insulation radiation material is reduced by 19.8% compared with that of a high-temperature kiln without the heat insulation radiation material. The coating is coated on refractory bricks, the coating is kept at 1200 ℃ for 15min, and water quenching is carried out for 30 times without cracking and falling. FIG. 1 shows a heat insulating radiation material (La 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Compared with standard pdf card, has pyrochlore structure, narrow peak, no impurity peak and high crystallinity.
Example 2
A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
(1) Batching and pretreatment: sieving the zirconia polishing powder waste to remove large particles and foreign matters, and mixing the sieved waste with samarium carbonate and cerium carbonate according to Sm 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Stoichiometric addition ofPutting the mixture into a drying kiln, drying the mixture for 2 hours at 200 ℃, and adding the dried powder into a mixer for 1 hour to obtain a mixed precursor;
(2) Preparing powder: the precursor is insulated for 3 hours at the firing temperature of 1500 ℃ to obtain Sm with pyrochlore structure 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder;
(3) And (3) preparing slurry: adding 100 parts of water and 0.5 part of dispersant BYK190 into a size mixing tank, fully stirring, adding 100 parts of powder, stirring for 0.5h to form slurry, starting a size mixing tank and a ball mill communication pump, circularly grinding the slurry through the ball mill, and stopping grinding when the particle size D50 of the powder in the slurry reaches 1 mu m to obtain slurry;
(4) Preparing a heat-insulating radiation material: 100 parts of slurry and 100 parts of binder are respectively added into a dispersing tank, wherein the binder comprises 5% by mass (La) 0.36 Ce 0.64 )PO 4 With mass fraction of 50% Al (H) 2 PO 4 ) 3 The mixture is mixed, and the slurry and the adhesive are stirred and dispersed for 2 hours at high speed to obtain the heat-insulating radiation material;
(5) And (3) testing the performance of the heat-insulating radiation material: the infrared emissivity tester is adopted to test that the total-wave integral emissivity of the heat insulation radiation material is more than 0.92 at the working temperature of 25-1400 ℃ and the heat conductivity at 1200 ℃ is 0.89W/(m.k), and the energy consumption of the wall spraying heat insulation radiation material is reduced by 17.9% compared with that of a high-temperature kiln without the heat insulation radiation material. The coating is coated on refractory bricks, the coating is kept at 1200 ℃ for 15min, and water quenching is carried out for 30 times without cracking and falling.
Example 3
A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
(1) Batching and pretreatment: sieving zirconia polishing powder waste to remove large particles and foreign matters, and mixing the sieved waste with lanthanum carbonate and cerium carbonate according to La 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Adding the stoichiometric amount into a drying kiln, drying for 2 hours at 200 ℃, adding the dried powder into a mixer, and mixing for 1 hour to obtain a mixed precursor;
(2) Preparing powder: the precursor is kept at the firing temperature of 1500 ℃ for 3 hours to obtain La with pyrochlore structure 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder;
(3) And (3) preparing slurry: adding 100 parts of water and 0.5 part of dispersant BYK190 into a size mixing tank, fully stirring, adding 100 parts of powder, stirring for 0.5h to form slurry, starting the size mixing tank and a ball mill connected with a pump, circularly grinding the slurry by the ball mill, and obtaining the particle size D of the powder in the slurry 50 Stopping grinding when the particle size reaches 1 mu m to obtain slurry;
(4) Preparing a heat-insulating radiation material: 100 parts of slurry and 100 parts of binder are respectively added into a dispersing tank, wherein the binder comprises 5% by mass (La) 0.36 Ce 0.64 )PO 4 With mass fraction of 50% Al (H) 2 PO 4 ) 3 The mixture is mixed, and the slurry and the adhesive are stirred and dispersed for 2 hours at high speed to obtain the heat-insulating radiation material;
(5) And (3) testing the performance of the heat-insulating radiation material: the infrared emissivity tester is adopted to test that the total-wave integral emissivity of the heat insulation radiation material is more than 0.91 at the working temperature of 25-1400 ℃, the heat conductivity at 1200 ℃ is 1.04W/(m.k), and the energy consumption of the wall spraying heat insulation radiation material is reduced by 16.5% compared with that of a high-temperature kiln without the heat insulation radiation material. The coating is coated on refractory bricks, the coating is kept at 1200 ℃ for 15min, and water quenching is carried out for 30 times without cracking and falling.
Comparative example 1
A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
(1) Batching and pretreatment: sieving zirconia polishing powder waste to remove large particles and foreign matters, and mixing the sieved waste with lanthanum carbonate and cerium carbonate according to the formula (La) 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Adding the stoichiometric amount into a drying kiln, drying for 2 hours at 200 ℃, adding the dried powder into a mixer, and mixing for 1 hour to obtain a mixed precursor;
(2) Preparing powder: the precursor is kept at 1300 ℃ of firing temperature for 3 hours to obtain (La) 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder;
(3) And (3) preparing slurry: adding 100 parts of water and 0.5 part of dispersant BYK190 into a size mixing tank, fully stirring, adding 100 parts of powder, stirring for 0.5h to form slurry, starting a size mixing tank and a ball mill communication pump, circularly grinding the slurry through the ball mill, and stopping grinding when the particle size D50 of the powder in the slurry reaches 1 mu m to obtain slurry;
(4) Preparing a heat-insulating radiation material: 100 parts of slurry and 100 parts of binder are respectively added into a dispersing tank, wherein the binder comprises 5% by mass (La) 0.36 Ce 0.64 )PO 4 With mass fraction of 50% Al (H) 2 PO 4 ) 3 The mixture is mixed, and the slurry and the adhesive are stirred and dispersed for 2 hours at high speed to obtain the heat-insulating radiation material;
(5) And (3) testing the performance of the heat-insulating radiation material: the infrared emissivity tester is adopted to test that the total-wave integral emissivity of the heat insulation radiation material is more than 0.88 at the working temperature of 25-1400 ℃, the heat conductivity at 1200 ℃ is 1.65W/(m.k), and the energy consumption of the wall spraying heat insulation radiation material is reduced by 12.3% compared with that of a high-temperature kiln without the heat insulation radiation material. The coating is coated on refractory bricks, the coating is kept at 1200 ℃ for 15min, and water quenching is carried out for 30 times without cracking and falling.
Comparative example 2
A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
(1) Batching and pretreatment: sieving zirconia polishing powder waste to remove large particles and foreign matters, adding the sieved waste into a drying kiln, drying at 200 ℃ for 2 hours, adding the dried powder into a mixer, and mixing for 1 hour to obtain a mixed precursor;
(2) Preparing powder: the precursor is kept at the firing temperature of 1500 ℃ for 3 hours to obtain ZrO 2 Powder;
(3) And (3) preparing slurry: adding 100 parts of water and 0.5 part of dispersant BYK190 into a size mixing tank, fully stirring, adding 100 parts of powder, stirring for 0.5h to form slurry, starting a size mixing tank and a ball mill communication pump, circularly grinding the slurry through the ball mill, and stopping grinding when the particle size D50 of the powder in the slurry reaches 1 mu m to obtain slurry;
(4) Preparing a heat-insulating radiation material: 100 parts of slurry and 100 parts of binder are respectively added into a dispersing tank, wherein the binder comprises 5% by mass (La) 0.36 Ce 0.64 )PO 4 With mass fraction of 50% Al (H) 2 PO 4 ) 3 The mixture is mixed, and the slurry and the adhesive are stirred and dispersed for 2 hours at high speed to obtain the heat-insulating radiation material;
(5) And (3) testing the performance of the heat-insulating radiation material: the infrared emissivity tester is adopted to test that the total-wave integral emissivity of the heat insulation radiation material is more than 0.80 at the working temperature of 25-1400 ℃, the heat conductivity at 1200 ℃ is 2.89W/(m.k), and the energy consumption of the wall spraying heat insulation radiation material is reduced by 6.8% compared with that of a high-temperature kiln without the heat insulation radiation material. The coating is coated on refractory bricks, the coating is kept at 1200 ℃ for 15min, and water quenching is carried out for 30 times without cracking and falling.
Comparative example 3
A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
(1) Batching and pretreatment: sieving zirconia polishing powder waste to remove large particles and foreign matters, and mixing the sieved waste with lanthanum carbonate, samarium carbonate and cerium carbonate according to the formula (La) 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Adding the stoichiometric amount into a drying kiln, drying for 2 hours at 200 ℃, adding the dried powder into a mixer, and mixing for 1 hour to obtain a mixed precursor;
(2) Preparing powder: the precursor is kept at the firing temperature of 1500 ℃ for 3 hours to obtain (La) with pyrochlore structure 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder;
(3) And (3) preparing slurry: adding 100 parts of water and 0.5 part of dispersant BYK190 into a size mixing tank, fully stirring, adding 100 parts of powder, stirring for 0.5h to form slurry, starting a size mixing tank and a ball mill communication pump, circularly grinding the slurry through the ball mill, and stopping grinding when the particle size D50 of the powder in the slurry reaches 1 mu m to obtain slurry;
(4) Preparing a heat-insulating radiation material: 100 parts of slurry and 100 parts of adhesive are respectively added into a dispersion tank, the adhesive is silica sol with the mass fraction of 30%, and the slurry and the adhesive are subjected to high-speed stirring and dispersion for 2 hours to obtain a heat-insulating radiation material;
(5) And (3) testing the performance of the heat-insulating radiation material: the infrared emissivity tester is adopted to test that the total-wave integral emissivity of the heat insulation radiation material is more than 0.88 at the working temperature of 25-1400 ℃, the heat conductivity at 1200 ℃ is 0.64W/(m.k), and the energy consumption of the wall spraying heat insulation radiation material is reduced by 14.7% compared with that of a high-temperature kiln without the heat insulation radiation material. Coating on refractory bricks, and preserving the temperature of the coating at 1200 ℃ for 15min, wherein cracking and falling phenomena occur after water quenching for 24 times.
Comparative example 4
A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste comprises the following steps:
(1) Batching and pretreatment: sieving zirconia polishing powder waste to remove large particles and foreign matters, and mixing the sieved waste with lanthanum carbonate, samarium carbonate and cerium carbonate according to the formula (La) 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Adding the stoichiometric amount into a drying kiln, drying for 2 hours at 200 ℃, adding the dried powder into a mixer, and mixing for 1 hour to obtain a mixed precursor;
(2) Preparing powder: the precursor is kept at the firing temperature of 1500 ℃ for 3 hours to obtain (La) with pyrochlore structure 0.5 Sm 0.5 ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder;
(3) And (3) preparing slurry: adding 100 parts of water and 0.5 part of dispersant BYK190 into a size mixing tank, fully stirring, adding 100 parts of powder, stirring for 0.5h to form slurry, starting a size mixing tank and a ball mill communication pump, circularly grinding the slurry through the ball mill, and stopping grinding when the particle size D50 of the powder in the slurry reaches 1 mu m to obtain slurry;
(4) Preparing a heat-insulating radiation material: 100 parts of slurry and 300 parts of binder, each consisting of 5% by mass (La) 0.36 Ce 0.64 )PO 4 With mass fraction of 50% Al (H) 2 PO 4 ) 3 The mixture is mixed, and the slurry and the adhesive are stirred and dispersed for 2 hours at high speed to obtain the heat-insulating radiation material;
(5) And (3) testing the performance of the heat-insulating radiation material: the infrared emissivity tester is adopted to test that the total-wave integral emissivity of the heat insulation radiation material is more than 0.87 at the working temperature of 25-1400 ℃, the heat conductivity at 1200 ℃ is 0.96W/(m.k), and the energy consumption of the wall spraying heat insulation radiation material is reduced by 13.3% compared with that of a high-temperature kiln without the heat insulation radiation material. The coating is coated on refractory bricks, the coating is kept at 1200 ℃ for 15min, and water quenching is carried out for 30 times without cracking and falling.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A preparation method of a heat-insulating radiation material prepared by using zirconia polishing powder waste is characterized by comprising the following steps: the method comprises the following steps:
step (1) pretreatment: sieving zirconia polishing powder waste, and then drying and mixing with rare earth carbonate to obtain precursor powder;
preparing radiation powder in the step (2): the precursor powder is burnt and insulated to obtain (La) with pyrochlore structure 0.5+x Sm 0.5-x ) 2 (Zr 0.7 Ce 0.3 ) 2 O 7 Powder, wherein x= -0.5, 0 or 0.5;
and (3) preparing radiation slurry: dissolving a dispersing agent in water, fully mixing, adding the powder, stirring, grinding, and obtaining slurry after grinding;
preparing a radiation material in the step (4): mixing and stirring the slurry and the binder solution to obtain the heat-insulating radiation material prepared by using the zirconia polishing powder waste;
the waste zirconia polishing powder in the step (1) contains 50-65% of ZrO2, 1-5% of polishing impurities and the balance of water; the polishing impurities contain aluminum, iron and copper; the rare earth carbonate in the step (1) is at least one of cerium carbonate, lanthanum carbonate and samarium carbonate;
the mass ratio of the sizing agent to the binder in the step (4) is 1:1-2; the binder solution in the step (4) is prepared from (La) 0.36 Ce 0.64 )PO 4 With Al (H) 2 PO 4 ) 3 Mixing, wherein, (La 0.36 Ce 0.64 )PO 4 With Al (H) 2 PO 4 ) 3 The mass ratio of (2) is 1:10-30, (La) 0.36 Ce 0.64 )PO 4 With Al (H) 2 PO 4 ) 3 The sum of the masses of (2) is 45-60% of the mass of the binder solution.
2. The method for preparing the heat-insulating radiation material prepared by using the zirconia polishing powder waste according to claim 1, wherein: the temperature of the drying step in the step (1) is 180-220 ℃ and the time is 1-3 hours; the mixing step in the step (1) is carried out for 0.5-1.5 hours.
3. The method for preparing the heat-insulating radiation material prepared by using the zirconia polishing powder waste according to claim 1, wherein: the firing temperature in the step (2) is 1450-1550 ℃; the time of the heat preservation step in the step (2) is 2-4 hours.
4. The method for preparing the heat-insulating radiation material prepared by using the zirconia polishing powder waste according to claim 1, wherein: the dispersing agent in the step (3) is at least one of BYK-190 or RT-8040; the mass ratio of the water, the dispersing agent and the powder in the step (3) is 1:0.005-0.15:1-2.
5. The method for preparing the heat-insulating radiation material prepared by using the zirconia polishing powder waste according to claim 1, wherein: powder granularity D of the slurry in the step (3) 50 ≤1μm。
6. A heat-insulating radiation material prepared by using zirconia polishing powder waste is characterized in that: the heat insulating radiation material is produced by the production method according to any one of claims 1 to 5.
7. The use of the heat insulating radiation material prepared by using the waste zirconia polishing powder as set forth in claim 6, wherein: the application of the heat-insulating radiation material in preparing industrial kilns.
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