Pretreatment and sintering integrated high-temperature synthesis equipment and method for preparing fluorescent powder by utilizing pretreatment and sintering integrated high-temperature synthesis equipment

Abstract

The invention discloses pretreatment and sintering integrated high-temperature synthesis equipment and a method for preparing fluorescent powder by using the same, and relates to high-temperature synthesis equipment and a fluorescent powder synthesis method. The invention aims to solve the technical problems of process discretization, discontinuous production, high energy consumption and poor product purity when the fluorescent powder is prepared by the existing high-temperature sintering process. The equipment comprises a heat treatment chamber in a shell, a rotating motor, a funnel, a crucible, a bracket, a transmission gear, an alloy steel conveying belt, a lifting device, a lifting motor and a material collecting box. The alloy steel conveying belt is located below the heat treatment chamber, and the crucible is fixed to the alloy steel conveying belt for conveying. The method for preparing the fluorescent powder comprises the following steps: putting raw materials into the funnel, and rotating to fall into the crucible; and the crucible is conveyed to the heat treatment chamber for heat treatment by the alloy steel conveying belt, and then is conveyed to the post-treatment area for collecting the material. Manual operation and pollution are reduced, light intensity and color purity are improved, and the method can be applied to the field of high-temperature synthesis.

Description

Technical Field

[0001] The invention relates to high-temperature synthesis equipment and a method for synthesizing fluorescent powder. Background Art

[0002] Phosphors are often produced using a high-temperature solid-phase method. High-temperature sintering furnaces play a huge role in batch preparation of crystals. Almost all high-melting-point crystals require a high-temperature sintering furnace, which is kept warm at high temperatures to synthesize or grow crystals. Existing high-temperature sintering processes for phosphors typically require separate equipment for staged operations in the pretreatment, sintering, and post-processing phases. Environmental differences in temperature and humidity during pretreatment and sintering can cause surface defects or lattice distortion in the phosphor, reducing luminous efficiency and batch consistency. Furthermore, manual material transfer between processes results in long production cycles and high energy consumption. Multiple exposures to the environment can easily introduce impurities, affecting the purity of the phosphor. Summary of the Invention

[0003] The present invention aims to solve the technical problems of process discreteness, discontinuous production, high energy consumption and poor product purity in the existing high-temperature sintering process for preparing phosphors, and to provide a high-temperature synthesis device integrating pretreatment and sintering and a method for preparing phosphors using the same.

[0004] The pretreatment and sintering integrated high-temperature synthesis equipment of the present invention includes a housing 1, a heat treatment chamber 2, a rotating motor 3, a funnel 4, a crucible 5, a bracket 6, a transmission gear 7, an alloy steel conveyor belt 8, a lifting device 9, a lifting motor 10 and a collection box 11;

[0005] The front of the housing 1 is provided with a control panel 1-1 and a discharge door 1-2, the side is provided with a loading door 1-3, and the top is provided with a heat dissipation hole 1-4;

[0006] The inner wall of the heat treatment chamber 2 is paved with a heat insulation layer 2-1, a support plate 2-2 is provided on the outside of the heat treatment chamber 2, and a heating silicon carbon rod 2-3 is provided inside the heat treatment chamber 2;

[0007] The rotating motor 3 is fixed on the support plate 2-2, and the funnel 4 is connected to the rotating motor 3; the rotating motor 3 can drive the funnel 4 to rotate; a pre-treatment screen 4-1 is also provided in the funnel 4;

[0008] The bracket 6 is fixed in the housing 1, supporting the transmission gear 7 and the alloy steel conveyor belt 8; the alloy steel conveyor belt 8 is arranged under the heat treatment chamber 2 and contacts the lower edge of the heat treatment chamber 2; the crucible inlet 2-4 and the crucible outlet 2-5 are arranged at the relative positions of the left and right side walls of the heat treatment chamber 2 and in contact with the alloy steel conveyor belt 8;

[0009] The crucible 5 is fixed to the conveyor belt 8 by a lock 5-1, and the crucible 5 can change its position by the movement of the alloy steel conveyor belt 8;

[0010] The material collecting box 11 is arranged below the alloy steel conveyor belt 8, and the material collecting box 11 is fixed on the lifting device 9; the lifting motor 10 can drive the lifting device 9 to move up and down.

[0011] A post-processing screen 11-1 is also provided in the aggregate box 11;

[0012] Buffer blocks 11 - 2 are further provided on the left and right inner side walls of the aggregate box 11 .

[0013] Furthermore, the upper part of the lock buckle 5 - 1 is fixed on the crucible 5 , and the lower part of the lock buckle 5 - 1 is fixed on the alloy steel conveyor belt 8 . The lock buckle 5 - 1 is used to fix the crucible 5 on the conveyor belt 8 and can move with the alloy steel conveyor belt 8 .

[0014] The method for preparing phosphor using the above-mentioned pretreatment and sintering integrated high-temperature synthesis equipment is carried out in the following steps:

[0015] 1. Accurately weigh the raw materials and flux according to the stoichiometric ratio of the phosphor;

[0016] 2. Place the weighed raw materials onto the pre-treatment screen 4-1 of the funnel 4 through the loading door 1-3, turn on the rotary motor to rotate the funnel 4. During the rotation, the raw materials pass through the pre-treatment screen 4-1 and fall into the crucible 5 below. Cover the crucible 5 with a lid 5 and seal it tightly with high-temperature resistant glue.

[0017] 3. Start the transmission gear 7 and drive the alloy steel conveyor belt 8 to move, so that the crucible 5 passes through the crucible inlet 2-4 and enters the heat treatment chamber 2 for heat treatment;

[0018] 4. After the heat treatment is completed, start the transmission gear 7 to rotate, so that the crucible 5 passes through the crucible outlet 2-5 and runs to the post-processing area above the aggregate box 11, open the discharge door 1-2 and remove the crucible cover, and then raise the aggregate box 11 through the lifting device 9 so that the crucible 5 is located in the aggregate box 11, and the alloy steel conveyor belt 8 is driven to reciprocate by the transmission gear 7, driving the crucible 5 to generate reciprocating motion, and the crucible 5 periodically hits the buffer block 11-2 to completely separate the product inside the crucible 5 and collect it in the aggregate box 11 to obtain a phosphor product.

[0019] Furthermore, the above-mentioned pretreatment and sintering integrated high-temperature synthesis equipment is used to prepare BaTb4Si3O 13 :Eu 3+ The red phosphor method is carried out as follows:

[0020] 1. According to BaTb4Si3O 13 :xEu 3+ BaCO3, Tb4O7, SiO2, and Eu2O3 were accurately weighed in the stoichiometric ratio, of which BaTb4Si3O 13:xEu 3+ Where x = 2%~10%, that is, Eu 3+ The doping amount of BaCO3 is 2%~10%; then weigh the flux H3BO3, where H3BO3 accounts for 9%~21% of the amount of BaCO3;

[0021] 2. Place the weighed raw materials onto the pre-treatment screen 4-1 of the funnel 4 through the loading door 1-3, turn on the rotary motor, and rotate the funnel 4 at a speed of 200-300 r / min. During the rotation, the raw materials pass through the pre-treatment screen 4-1 and fall into the crucible 5 below. Cover the crucible 5 with a lid 5 and seal it tightly with high-temperature resistant glue.

[0022] 3. Start the transmission gear 7 and simultaneously drive the alloy steel conveyor belt 8 to move, so that the crucible 5 passes through the crucible inlet 2-4 and enters the heat treatment chamber 2 for heat treatment; wherein the temperature control program of the heat treatment chamber 2 is set as follows: from room temperature to 800°C after 120 minutes and keep at this temperature for 120 minutes; then from 800°C to 1550°C after 120 minutes and keep at this temperature for 120 minutes; then, from 1550°C to 800°C after 120 minutes, and then cool down to room temperature with the furnace;

[0023] 4. After the heat treatment is completed, the transmission gear 7 rotates to make the crucible 5 pass through the crucible outlet 2-5 and run to the post-processing area above the collection box 11. The discharge door 1-2 is opened and the crucible cover is removed. Then, the collection box 11 is raised by the lifting device 9 so that the crucible 5 is located in the collection box 11. The alloy steel conveyor belt 8 is driven to reciprocate by the transmission gear 7, driving the crucible 5 to generate reciprocating motion. The crucible 5 periodically hits the buffer block 11-2 to completely separate the product inside the crucible 5, collect it in the collection box 11, and filter it through the sieve to obtain BaTb4Si3O 13 :Eu 3+ Red phosphor.

[0024] Furthermore, in step 2, the running speed of the alloy steel conveyor belt 8 is 0.1 m / s to 0.15 m / s;

[0025] Furthermore, in step 2, the reciprocating motion speed of the alloy steel conveyor belt 8 is 0.2 m / s to 0.3 m / s.

[0026] The present invention utilizes an efficient continuous preparation system integrated with an alloy steel conveyor belt and achieves the following goals through an integrated full-process design:

[0027] 1. Integrate pretreatment, high-temperature sintering and post-treatment into a single conveyor system, eliminating manual transfer steps, significantly shortening production cycles and improving production efficiency;

[0028] 2. Relying on dynamic conveyor belt transportation, manual intervention is reduced to avoid cross contamination. At the same time, sintering parameters are adjusted through real-time feedback to ensure process stability and controllable product quality;

[0029] 3. Preparation of BaTb4Si3O using the high temperature furnace of the present invention 13 : Eu 3+ Red phosphor crystals, promoting the activation of Eu ions 3+ Entering the crystal lattice, it increases the intensity and color purity of red light. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the housing of the pretreatment and sintering integrated high-temperature synthesis equipment;

[0031] Figure 2 This is a schematic diagram of the internal structure of the pretreatment and sintering integrated high-temperature synthesis equipment;

[0032] Figure 3 It is a structural diagram of the lifting device 9 and the collecting box 11;

[0033] Figure 4 BaTb4Si3O prepared in Example 1 13 :Eu 3+ Red phosphor and BaTb4Si3O prepared by ordinary high temperature furnace 13 :Eu 3+ XRD spectrum of red phosphor;

[0034] Figure 5 BaTb4Si3O prepared in Example 1 13 :Eu 3+ Red phosphor and BaTb4Si3O prepared by ordinary high temperature furnace 13 :Eu 3+ Excitation spectrum of red phosphor;

[0035] Figure 6 BaTb4Si3O prepared in Example 1 13 :Eu 3+ Red phosphor and BaTb4Si3O prepared by ordinary high temperature furnace 13 :Eu 3+ Emission spectrum of red phosphor;

[0036] Figure 7 It is BaTb4Si3O prepared in Example 1 13 :Eu 3+ Red phosphor and BaTb4Si3O prepared by ordinary high temperature furnace 13 :Eu 3+ CIE color coordinate diagram of red phosphor. DETAILED DESCRIPTION

[0037] The beneficial effects of the present invention are demonstrated with the following examples.

[0038] Example 1: The pretreatment and sintering integrated high-temperature synthesis equipment of this embodiment consists of a housing 1, a heat treatment chamber 2, a rotating motor 3, a funnel 4, a crucible 5, a bracket 6, a transmission gear 7, an alloy steel conveyor belt 8, a lifting device 9, a lifting motor 10 and a collection box 11;

[0039] The front of the housing 1 is provided with a control panel 1-1 and a discharge door 1-2, the side is provided with a loading door 1-3, and the top is provided with a heat dissipation hole 1-4;

[0040] The inner wall of the heat treatment chamber 2 is paved with a heat insulation layer 2-1, a support plate 2-2 is provided on the outside of the heat treatment chamber 2, and a heating silicon carbon rod 2-3 is provided inside the heat treatment chamber 2;

[0041] The rotating motor 3 is fixed on the support plate 2-2, and the funnel 4 is connected to the rotating motor 3; the rotating motor 3 can drive the funnel 4 to rotate; a pre-treatment screen 4-1 is also provided in the funnel 4;

[0042] The bracket 6 is fixed in the housing 1, supporting the transmission gear 7 and the alloy steel conveyor belt 8; the alloy steel conveyor belt 8 is arranged under the heat treatment chamber 2 and contacts the lower edge of the heat treatment chamber 2; the crucible inlet 2-4 and the crucible outlet 2-5 are arranged at the relative positions of the left and right side walls of the heat treatment chamber 2 and in contact with the alloy steel conveyor belt 8;

[0043] The upper part of the lock buckle 5-1 is fixed on the crucible 5, and the lower part of the lock buckle 5-1 is fixed on the alloy steel conveyor belt 8. The crucible 5 is fixed to the conveyor belt 8 through the lock buckle 5-1, and the crucible 5 can move with the movement of the alloy steel conveyor belt 8;

[0044] The collecting box 11 is set below the alloy steel conveyor belt 8, and the collecting box 11 is fixed on the lifting device 9. A post-processing screen 11-1 is also set in the collecting box 11, and buffer blocks 11-2 are set on the left and right inner walls of the collecting box 11; the lifting motor 10 drives the lifting device 9 to move up and down.

[0045] BaTb4Si3O was prepared by using the pretreatment and sintering integrated high-temperature synthesis equipment of Example 1. 13 :Eu 3+ The red phosphor method is carried out as follows:

[0046] 1. According to BaTb4Si3O 13 :xEu 3+The stoichiometric ratio is accurately weighed: 0.4933 g of 4N purity BaCO3, 1.8459 g of 4N purity Tb4O7, 0.4506 g of 4N purity SiO2, 0.0220 g of 4N purity Eu2O3, BaTb4Si3O 13 :xEu 3+ Where x=5%, namely Eu 3+ The doping amount of BaCO3 is 5%, and 0.0155 g of 4N purity flux H3BO3 is weighed. H3BO3 accounts for 10% of the amount of BaCO3.

[0047] 2. Place the weighed raw materials onto the pre-treatment screen 4-1 of the funnel 4 through the loading door 1-3, turn on the rotary motor, and rotate the funnel 4 at a speed of 300 r / min. The raw materials pass through the pre-treatment screen 4-1 and fall into the crucible 5 below. Then, seal the crucible 5 with a high-temperature resistant glue.

[0048] 3. Then, the crucible cover is closed, and the transmission gear 7 rotates, driving the alloy steel conveyor belt 8 at a running speed of 0.1 m / s, so that the crucible 5 passes through the crucible inlet 2-4 and enters the heat treatment chamber 2 for heat treatment. The temperature control program of the heat treatment chamber 2 is set as follows: from room temperature to 800°C after 120 minutes and kept at this temperature for 120 minutes; then from 800°C to 1550°C after 120 minutes and kept at this temperature for 120 minutes; then, from 1550°C to 800°C after 120 minutes, and then cooled to room temperature with the furnace;

[0049] 5. After the heat treatment is completed, the transmission gear 7 rotates to make the crucible 5 pass through the crucible outlet 2-5 and run to the post-processing area above the collection box 11. The discharge door 1-2 is opened and the crucible cover is removed. Then, the collection box 11 is raised by the lifting device 9 so that the crucible 5 falls into the collection box 11. Then, the transmission gear 7 drives the alloy steel conveyor belt 8 to reciprocate at a speed of 0.2m / s, driving the crucible 5 to reciprocate. The crucible 5 periodically hits the buffer block 11-2 to completely separate the internal product, collect it in the collection box 11, and filter it through the post-processing screen 11-1 to obtain BaTb4Si3O 13 :Eu 3+ Red phosphor.

[0050] Comparative Example 1: This comparative example uses BaTb4Si3O prepared in an ordinary high-temperature furnace. 13 :Eu 3+ Red phosphor, the specific steps are as follows:

[0051] 1. According to BaTb4Si3O 13 :xEu 3+The stoichiometric ratio is accurately weighed: 0.4933 g of 4N purity BaCO3, 1.8459 g of 4N purity Tb4O7, 0.4506 g of 4N purity SiO2, 0.0220 g of 4N purity Eu2O3, BaTb4Si3O 13 :xEu 3+ Where x=5%, namely Eu 3+ The doping amount is 5%; then weigh 0.0155 g of 4N purity flux H3BO3, which accounts for 10% of the amount of BaCO3; add it to the agate mortar and grind it for 5 minutes to mix the raw materials evenly;

[0052] 2. Transfer the raw materials to a 200-mesh sieve for sieving to obtain a mixed raw material with uniform particle size;

[0053] 3. Transfer the mixed raw materials into a corundum crucible, cover the crucible with a lid and place it in the hearth of an ordinary high-temperature furnace;

[0054] Fourth, sintering was carried out according to the following temperature control program: from room temperature for 120 minutes, the temperature was raised to 800°C and kept at that temperature for 120 minutes; then the temperature was raised from 800°C to 1550°C for 120 minutes and kept at that temperature for 120 minutes; then the temperature was lowered from 1550°C to 800°C for 120 minutes, and then the temperature was lowered to room temperature with the furnace;

[0055] 5. The product was taken out from the ordinary high temperature furnace and sieved through a 200 mesh sieve to obtain BaTb4Si3O 13 :Eu 3+ Red phosphor.

[0056] The BaTb4Si3O prepared in Example 1 13 :Eu 3+ Red phosphor and BaTb4Si3O prepared by ordinary high temperature furnace 13 :Eu 3+ The red phosphor was tested by XRD and the obtained XRD spectrum was as follows Figure 4 As shown, from Figure 4 It can be seen that compared with the standard PDF card, the BaTb4Si3O prepared by the integrated equipment in Example 1 13 :Eu 3+ The red phosphor can better match the standard card, indicating that the sintering can promote the 3+ It can better penetrate into the crystal lattice and the prepared crystals contain less impurities.

[0057] Figure 5 BaTb4Si3O prepared in Example 1 13 :Eu 3+Red phosphor and BaTb4Si3O prepared by ordinary high temperature furnace 13 :Eu 3+ The excitation spectrum of red phosphor, from Figure 5 It can be seen that the excitation peak positions of the two red phosphors have not changed significantly, but the excitation peak intensities are different. The excitation peak intensity of the red phosphor sample prepared by the integrated device of Example 1 is significantly enhanced, which also shows that the device promotes the 3+ It is easier to enter the matrix lattice, making the activated ion Eu 3+ It can absorb more near-ultraviolet light and blue light.

[0058] Figure 6 BaTb4Si3O prepared in Example 1 13 :Eu 3+ Red phosphor and BaTb4Si3O prepared by ordinary high temperature furnace 13 :Eu 3+ Red phosphor emission spectrum, from Figure 6 It can be seen that the emission peak positions of the two are almost the same, but the peak intensity of the emission spectrum is very different. 13 :Eu 3+ The emission intensity is significantly higher than that of phosphor samples sintered in ordinary high-temperature furnaces. This is consistent with the excitation spectrum results, which once again shows that the device promotes the 3+ Entering the interior of the lattice, the red light intensity is increased.

[0059] The calculated CIE color coordinates of the sample prepared in an ordinary high-temperature furnace are (0.606, 0.360), and the CIE color coordinates of the red phosphor prepared in the integrated device in Example 1 are (0.622, 0.330). Figure 7 The CIE color coordinate diagram is calculated by importing the phosphor emission spectrum data into the CIE-1931 chromaticity diagram software, which can directly reflect the sample's luminous color. The luminous color purity is calculated using the following formula: ,in( , ) is the standard daylight color coordinate value (0.31, 0.316), and the 615 nm color coordinate ( , ) is (0.680, 0.320), ( , ) are the CIE color coordinates of the prepared red phosphor. The calculated luminescence purity of the sample increased from 80.87% to 84.40%, indicating that the integrated device also improved the red light color purity of the phosphor sample.

Claims

1. A pretreatment and sintering integrated high temperature synthesis equipment, characterized in that, The device comprises a housing (1), a heat treatment chamber (2), a rotating motor (3), a hopper (4), a crucible (5), a bracket (6), a transmission gear (7), an alloy steel conveyor belt (8), a lifting device (9), a lifting motor (10) and a material collection box (11); A control panel (1-1) and a discharge door (1-2) are provided on the front of the housing (1), a loading door (1-3) is provided on the side, and a heat dissipation hole (1-4) is provided on the top; An insulation layer (2-1) is laid on the inner wall of the heat treatment chamber (2), a support plate (2-2) is arranged on the outside of the heat treatment chamber (2), and a heating silicon carbon rod (2-3) is arranged inside the heat treatment chamber (2); The rotating motor (3) is fixed on the support plate (2-2), and the funnel (4) is connected to the rotating motor (3); the rotating motor (3) can drive the funnel (4) to rotate; a pre-treatment screen (4-1) is also provided in the funnel (4); The bracket (6) is fixed in the housing (1) and supports the transmission gear (7) and the alloy steel conveyor belt (8); the alloy steel conveyor belt (8) is arranged under the heat treatment chamber (2) and contacts the lower edge of the heat treatment chamber (2); the crucible inlet (2-4) and the crucible outlet (2-5) are arranged at relative positions of the left and right side walls of the heat treatment chamber (2) and at a position in contact with the alloy steel conveyor belt (8); The crucible (5) is fixed on the alloy steel conveyor belt (8) by a lock buckle (5-1), and the crucible (5) can change its position through the movement of the alloy steel conveyor belt (8); A material collection box (11) is arranged below the alloy steel conveyor belt (8), and the material collection box (11) is fixed on the lifting device (9); a lifting motor (10) drives the lifting device (9) to move up and down; a post-processing screen (11-1) is also arranged in the material collection box (11); and buffer blocks (11-2) are also arranged on the left and right inner walls of the material collection box (11).

2. The pretreatment and sintering integrated high temperature synthesis equipment according to claim 1, characterized in that: The upper part of the lock buckle (5-1) is fixed on the crucible (5), and the lower part of the lock buckle (5-1) is fixed on the alloy steel conveyor belt (8).

3. A method for preparing phosphor using the pretreatment and sintering integrated high-temperature synthesis equipment according to claim 1, characterized in that: The method proceeds as follows:

1. Accurately weigh the raw materials and flux according to the stoichiometric ratio of the phosphor; 2. Place the weighed raw materials onto the pre-treatment screen (4-1) of the funnel (4) through the loading door 1-3, turn on the rotary motor to rotate the funnel (4), and during the rotation, the raw materials fall through the pre-treatment screen (4-1) into the crucible (5) below. Cover the crucible with a lid 5, and then seal the lid of the crucible (5) tightly with high-temperature resistant glue; 3. Start the transmission gear (7) to rotate and simultaneously drive the alloy steel conveyor belt (8) to move, so that the crucible (5) passes through the crucible inlet 2-4 and enters the heat treatment chamber (2) for heat treatment; 4. After the heat treatment is completed, the transmission gear (7) is started to rotate, so that the crucible (5) passes through the crucible outlet (2-5) and moves to the post-processing area above the collection box (11). The discharge door 1-2 is opened and the crucible cover is removed. Then, the collection box (11) is raised by the lifting device (9) so that the crucible (5) is located in the collection box (11). The alloy steel conveyor belt (8) is driven to reciprocate by the transmission gear (7), driving the crucible (5) to generate reciprocating motion. The crucible (5) periodically hits the buffer block (11-2) so that the product inside the crucible (5) is completely separated and collected in the collection box (11) to obtain a phosphor product.

4. The method for preparing phosphor using a high-temperature synthesis device integrating pretreatment and sintering according to claim 3, characterized in that: Preparation of BaTb4Si3O using pretreatment and sintering integrated high-temperature synthesis equipment 13 :Eu 3+ The red phosphor method is carried out as follows:

1. According to BaTb4Si3O 13 :xEu 3+ BaCO3, Tb4O7, SiO2, and Eu2O3 were accurately weighed in the stoichiometric ratio, of which BaTb4Si3O 13 :xEu 3+ Where x = 2%~10%, that is, Eu 3+ The doping amount is 2%~10%; then weigh the flux H3BO3; 2. Place the weighed raw materials onto the pre-treatment screen (4-1) of the funnel (4) through the loading door (1-3), turn on the rotary motor, and rotate the funnel (4) at a speed of 200-300 r / min. During the rotation, the raw materials pass through the pre-treatment screen (4-1) and fall into the crucible (5) below. Cover the crucible with a lid, and then seal the lid of the crucible (5) tightly with high-temperature resistant glue; 3. Start the transmission gear (7) to rotate and simultaneously drive the alloy steel conveyor belt (8) to move, so that the crucible (5) passes through the crucible inlet (2-4) and enters the heat treatment chamber (2) for heat treatment; wherein the temperature control program of the heat treatment chamber (2) is set as follows: from room temperature to 800°C after 120 minutes and keep warm for 120 minutes; then from 800°C to 1550°C after 120 minutes and keep warm for 120 minutes; then from 1550°C to 800°C after 120 minutes, and then cool down to room temperature with the furnace; 4. After the heat treatment is completed, the transmission gear (7) rotates to make the crucible (5) pass through the crucible outlet 2-5 and run to the post-processing area above the collection box (11). The discharge door 1-2 is opened and the crucible cover is removed. Then, the collection box (11) is raised by the lifting device (9) so that the crucible (5) is located in the collection box (11). The alloy steel conveyor belt (8) is driven to reciprocate by the transmission gear (7), driving the crucible (5) to generate reciprocating motion. The crucible (5) periodically hits the buffer block (11-2) to completely separate the product inside the crucible (5), collect it in the collection box (11), and filter it through a sieve to obtain BaTb4Si3O 13 :Eu 3+ Red phosphor.

5. The method for preparing phosphor using pretreatment and sintering integrated high-temperature synthesis equipment according to claim 4, characterized in that: The H3BO3 described in step 1 accounts for 9% to 21% of the amount of BaCO3.

6. The method for preparing phosphor using a high-temperature synthesis device integrating pretreatment and sintering according to claim 4 or 5, characterized in that: In step 2, the running speed of the alloy steel conveyor belt (8) is 0.1m / s~0.15m / s.

7. The method for preparing phosphor using a high-temperature synthesis device integrating pretreatment and sintering according to claim 4 or 5, characterized in that: In step 2, the reciprocating speed of the alloy steel conveyor belt (8) is 0.2 m / s to 0.3 m / s.

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