Low-porosity magnesium-zirconium eutectic refractory material and preparation method and equipment thereof

Abstract

The application relates to a magnesium-zirconium eutectic preparation technical field, and discloses a low-porosity magnesium-zirconium eutectic refractory material and a preparation method and equipment thereof; the magnesium-zirconium eutectic refractory material is made of the following raw materials in parts by weight: fused magnesium-zirconium eutectic aggregate 72-78 parts, high-purity fused magnesium micro powder 11-14 parts, monoclinic zirconium oxide micro powder 6-9 parts, pre-synthesized magnesium-zirconium eutectic nano powder 2.2-3.6 parts, yttrium stabilized zirconia sintering aid 0.9-1.4 parts, magnesium salt water inorganic binder 2.1-2.8 parts and magnesium citrate dispersing and defoaming agent 0.12-0.28 parts; the hydraulic rod is used as the only power source for lifting and moving, the knocking component is synchronously driven to periodically impact the outer wall of the mold body, micro-vibration is generated in the pressing process, the wrapped bubbles in the blank body are floated upwards, thus, a vibration motor and an independent driving cylinder are not additionally arranged, electrical and hydraulic matched parts are reduced, the overall structure of the equipment is simplified, and the equipment manufacturing cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of magnesium-zirconium eutectic preparation technology, specifically to a low-porosity magnesium-zirconium eutectic refractory material and its preparation method and equipment. Background Technology

[0002] Magnesium-zirconium eutectic refractories, with their high refractoriness, excellent thermal shock resistance, and resistance to molten steel slag penetration, are widely used in high-temperature linings such as RH refining furnaces and large glass melting furnaces. Low porosity is a core indicator for ensuring the high-temperature service life of this type of refractories. The forming process, as a crucial step in controlling the porosity of the billet, directly determines the density of the final product due to the venting capacity of the forming equipment. Existing magnesium-zirconium eutectic refractories forming presses and related processes suffer from multiple technical deficiencies.

[0003] Traditional presses rely solely on unidirectional hydraulic pressure without an auxiliary vibration exhaust structure. Since magnesium-zirconium mixed powder contains multi-level aggregates and ultrafine nanoparticles, a large amount of air is trapped between the particles. During the pressurization process, the gas cannot effectively float to the surface and be discharged, resulting in a large number of pores inside the green body and a high apparent porosity in the final sintered product. Summary of the Invention

[0004] The purpose of this invention is to provide a low-porosity magnesium-zirconium eutectic refractory material and its preparation method and equipment, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a low-porosity magnesium-zirconium eutectic refractory material, made from the following raw materials in parts by weight: 72-78 parts of fused magnesium-zirconium eutectic aggregate, 11-14 parts of high-purity fused magnesium micro powder, 6-9 parts of monoclinic zirconia micro powder, 2.2-3.6 parts of pre-synthesized magnesium-zirconium eutectic nanoparticles, 0.9-1.4 parts of yttrium-stabilized zirconia sintering aid, 2.1-2.8 parts of magnesium salt inorganic binder, and 0.12-0.28 parts of magnesium citrate dispersant and defoamer. The fused magnesium-zirconium eutectic aggregate is a three-stage continuous gradation, containing 5-8 mm coarse particles, 1-3 mm medium particles, and 0.1-0.5 mm fine particles. The magnesium salt inorganic binder is a saturated aqueous solution of magnesium chloride.

[0006] A method for preparing a low-porosity magnesium-zirconium eutectic refractory material, the method comprising the following steps: S1. Put all raw materials into the vacuum mixer, evacuate the chamber to -0.082 to -0.09 MPa, and wet grind and stir for 14 to 16 minutes to complete the degassing and mixing. S2. Fill the mixture into the molding die and vibrate the bottom at a low frequency for 40-50 seconds to allow the particles to rearrange and release the air in the gaps. S3. The upper and lower molds are used for bidirectional synchronous segmented pressurization, and 5MPa low-pressure pre-pressurization, 16MPa medium-pressure holding and venting, and 40MPa high-pressure densification and shaping are performed in sequence. Pressure is released and venting is performed synchronously during each stage of the holding process. S4. The billet is slowly dehydrated by sequentially holding at 60℃ for 6 hours, 120℃ for 10 hours, and 180℃ for 8 hours. S5. First, degrease under a negative pressure of 0.06MPa and a temperature of 200-600℃, then evacuate to 0.09MPa, then vacuum sinter at 1740-1760℃ for 5 hours, and finally vacuum cool to 800℃ and then ventilate to obtain a low-porosity magnesium-zirconium eutectic refractory material.

[0007] A pressurizing device for low-porosity magnesium-zirconium eutectic refractory material, used for bidirectional pressure molding of material in a mold, includes a base and further includes: A vertical rod is fixed around the top of the base, and a top seat is fixedly connected to the top of the vertical rod; The mold body is fixed to the vertical rod; A dual pressure component is disposed between the base and the top seat. The dual pressure component achieves the pressure action on the material in the mold body through bidirectional movement. The striking components are located on both sides of the mold body. They are used to strike the mold body by applying downward pressure from the double pressure components. The vacuum adsorption component is located above the mold body and is used to create a vacuum negative pressure on the mold body.

[0008] Preferably, the dual pressure member includes: Hydraulic rod one and hydraulic rod two are fixed to the top of the top seat and the inside of the base, respectively; The upper pressure head is fixed on the output shaft of the hydraulic rod and its lower end is adapted to the top of the mold body; The lower pressure head is fixed on the output shaft of the hydraulic rod two, and both the lower pressure head and the upper pressure head are slidably connected to the vertical rod. The top plate is slidably connected inside the mold body, and the bottom of the top plate is connected to the slide rods on both sides of the top of the lower pressure head.

[0009] Preferably, the striking element includes: A support frame is fixed to both sides of the top of the base, and a movable rod is rotatably connected to the inner side of the support frame; The gear is fixed to one end of the movable rod; A rack plate is fixed on both sides of the upper pressure head, and one side of the hydraulic rod meshes with one side of the gear.

[0010] Preferably, the striking element further includes a striking component, the striking component comprising: A movable rod slides through the interior of one side of the support frame. One end of the movable rod is fixedly connected to a striking head, and the other end of the movable rod is fixedly connected to a push plate. A spring is sleeved on the surface of the moving rod, and the two ends of the spring are fixed to one side of the push plate and the inner wall of the support frame, respectively. The cam is fixed to the other end of the movable rod.

[0011] Preferably, a roller is rotatably connected to one side of the push plate, and the roller is in rolling connection with the cam.

[0012] Preferably, the vacuum adsorption element includes: Slide plates are set on both sides of the top of the mold body. Adsorption plates are rotatably connected to the opposite side of the slide plates on both sides. The adsorption plates are hollow. Suction holes are evenly spaced at the bottom of the adsorption plate, and a filter screen is installed at each suction hole; A vacuum pump is fixed on the back of the base. The suction end of the vacuum pump is connected to a suction pipe one, and one side of the suction pipe one is connected to a suction pipe two. The other ends of both the suction pipe two and the suction pipe one are connected to the top of the adsorption plate.

[0013] Preferably, the vacuum adsorption component further includes a force-applying component, which includes: A movable ring is slidably connected to a vertical rod, and a force-applying rod is hinged between the movable ring and the sliding plate; A transmission rod is fixed to the bottom of the movable ring, and the other end of the transmission rod slides through the interior of the support plate on the base. Spring 2 is sleeved on the transmission rod, and its two ends are fixed to the bottom of the movable ring and the top of the support plate, respectively.

[0014] Preferably, it further includes a seal, the seal comprising: A piston rod is fixed behind the upper pressure head, and a piston tube slides through the surface of the other end of the piston rod. The piston tube is fixed behind the mold body. Airbags, which are fixed to both sides of the bottom of the adsorption plate. A connecting tube connects the two ends of the piston tube, and the other end of the connecting tube is connected to the rear of the airbag.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses a hydraulic rod for lifting and moving as the sole power source. A striking component drives the striking assembly to periodically impact the outer wall of the mold body, generating micro-vibrations during the pressurization process. This causes air bubbles trapped inside the blank to float upwards. This eliminates the need for an additional vibration motor and independent drive cylinder, reducing electrical and hydraulic components, simplifying the overall equipment structure, and lowering manufacturing costs. Simultaneously, a vacuum adsorption component locally vacuums the mold body, immediately removing the air bubbles that rise during vibration. The simultaneous and synergistic effect of the striking vibration and vacuum adsorption significantly improves the efficiency of gas removal from the blank, effectively reducing the original porosity of the blank and ensuring that the apparent porosity of the final magnesium-zirconium product is controlled at a low level. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure in this invention; Figure 2 This is a schematic diagram of the rear-view stereoscopic structure in this invention; Figure 3 This is a schematic diagram of the rear-view stereoscopic structure in this invention; Figure 4 This is a schematic cross-sectional view of the mold body in this invention; Figure 5 This is a partial three-dimensional bottom-view structural diagram of the present invention; Figure 6 This is a schematic diagram of a partial three-dimensional rear view structure in this invention; Figure 7 This is a schematic diagram of a partial stereoscopic left-side view structure in this invention; Figure 8 For the present invention Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 110, base; 120, vertical rod; 130, top seat; 140, double pressure component; 141, hydraulic rod one; 142, upper pressure head; 143, hydraulic rod two; 144, lower pressure head; 145, top plate; 150, mold body; 160, striking component; 161, support frame; 162, movable rod; 163, gear; 164, rack plate; 165, striking assembly; 1651, moving rod; 1652, push plate; 1653, striking head; 1654. Spring 1; 1655, Cam; 1656, Roller; 170, Vacuum Adsorption Component; 171, Slide Plate; 172, Adsorption Plate; 173, Suction Hole; 174, Vacuum Pump; 175, Suction Pipe 1; 176, Suction Pipe 2; 177, Force Applying Component; 1771, Moving Ring; 1772, Force Applying Rod; 1773, Transmission Rod; 1774, Spring 2; 180, Seal; 181, Piston Rod; 182, Piston Tube; 183, Connecting Pipe; 184, Airbag. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] A low-porosity magnesium-zirconium eutectic refractory material is made from the following raw materials in parts by weight: 72-78 parts of fused magnesium-zirconium eutectic aggregate, 11-14 parts of high-purity fused magnesium micro powder, 6-9 parts of monoclinic zirconia micro powder, 2.2-3.6 parts of pre-synthesized magnesium-zirconium eutectic nanoparticles, 0.9-1.4 parts of yttrium-stabilized zirconia sintering aid, 2.1-2.8 parts of magnesium brine inorganic binder, and 0.12-0.28 parts of magnesium citrate dispersant and defoamer. The fused magnesium-zirconium eutectic aggregate has a three-stage continuous gradation, containing 5-8 mm coarse particles, 1-3 mm medium particles, and 0.1-0.5 mm fine particles. The magnesium brine inorganic binder is a saturated aqueous solution of magnesium chloride.

[0020] A method for preparing a low-porosity magnesium-zirconium eutectic refractory material, the method comprising the following steps: S1. Put all raw materials into the vacuum mixer, evacuate the chamber to -0.082 to -0.09 MPa, and wet grind and stir for 14 to 16 minutes to complete the degassing and mixing. S2. Fill the mixture into the molding die and vibrate the bottom at a low frequency for 40-50 seconds to allow the particles to rearrange and release the air in the gaps. S3. The upper and lower molds are used for bidirectional synchronous segmented pressurization, and 5MPa low-pressure pre-pressurization, 16MPa medium-pressure holding and venting, and 40MPa high-pressure densification and shaping are performed in sequence. Pressure is released and venting is performed synchronously during each stage of the holding process. S4. The billet is slowly dehydrated by sequentially holding at 60℃ for 6 hours, 120℃ for 10 hours, and 180℃ for 8 hours. S5. First, degrease under a negative pressure of 0.06MPa and a temperature of 200-600℃, then evacuate to 0.09MPa, then vacuum sinter at 1740-1760℃ for 5 hours, and finally vacuum cool to 800℃ and then ventilate to obtain a low-porosity magnesium-zirconium eutectic refractory material.

[0021] Please see Figure 1-8As shown, a pressurizing device for low-porosity magnesium-zirconium eutectic refractory material is used for bidirectional pressurization molding of materials in a mold. It includes a base 110 and a vertical rod 120 fixed around the top of the base 110. A top seat 130 is fixedly connected to the top of the vertical rod 120. A mold body 150 is fixed on the vertical rod 120. A double-pressure component 140 is provided between the base 110 and the top seat 130. The double-pressure component 140 pressurizes the material in the mold body 150 through bidirectional movement. Striking components 160 are provided on both sides of the mold body 150. The downward pressure of the double-pressure component 140 and the striking components 160 perform a striking action on the mold body 150. A vacuum adsorption component 170 is provided above the mold body 150 to create a vacuum negative pressure on the mold body 150.

[0022] The dual-pressure component 140 includes a first hydraulic rod 141 and a second hydraulic rod 143, which are respectively fixed to the top of the top seat 130 and the inside of the base 110. An upper pressure head 142 is fixed on the output shaft of the first hydraulic rod 141, and its lower end is adapted to the top of the mold body 150. A lower pressure head 144 is fixed on the output shaft of the second hydraulic rod 143. Both the lower pressure head 144 and the upper pressure head 142 are slidably connected to the vertical rod 120. A top plate 145 is slidably connected inside the mold body 150. The bottom of the top plate 145 is connected to the sliding rods on both sides of the top of the lower pressure head 144. After the mixture is poured into the mold body 150, the hydraulic rod 141 is activated, which drives the upper pressure head 142 downward, so that the upper pressure head 142 can enter the mold body 150. Then, the hydraulic rod 143 is activated, which drives the lower pressure head 144 upward, while the top plate 145 slides in the mold body 150, thereby performing bidirectional pressure and improving the effect of subsequent pressure.

[0023] The striking element 160 includes a support frame 161, which is fixed to both sides of the top of the base 110. A movable rod 162 is rotatably connected to the inner side of the support frame 161. A gear 163 is fixed to one end of the movable rod 162. A rack plate 164 is fixed to both sides of the upper pressure head 142. One side of the hydraulic rod 141 meshes with one side of the gear 163. When the upper pressure head 142 moves downward, it will drive the rack plate 164 to move accordingly, causing the gear 163 meshing with it to rotate, and driving the movable rod 162 to rotate accordingly.

[0024] The striking component 160 also includes a striking assembly 165, which includes a movable rod 1651 that slides through the interior of one side of the support frame 161. One end of the movable rod 1651 is fixedly connected to a striking head 1653, and the other end of the movable rod 1651 is fixedly connected to a push plate 1652. A spring 1654 is sleeved on the surface of the movable rod 1651, and both ends of the spring 1654 are fixed to one side of the push plate 1652 and the inner wall of one side of the support frame 161, respectively. The other end of the movable rod 162 is fixedly connected to a cam 1655. When the movable rod 162 moves... When rotating, the cam 1655 will rotate along with it, causing the protruding part of the cam 1655 to rotate to the side of the right push plate 1652, thereby pushing the push plate 1652 and compressing the spring 1654. The striking head 1653 will then strike the mold body 150. When the cam 1655 moves away from the push plate 1652, the elastic force of the spring 1654 can drive the push plate 1652, the moving rod 1651 and the striking head 1653 back to the starting position. By repeating this process, the mold body 150 can be struck repeatedly.

[0025] A roller 1656 is rotatably connected to one side of the push plate 1652. The roller 1656 is in rolling connection with the cam 1655. The setting of the roller 1656 can reduce the friction between the roller and the cam 1655, making it easier to push the push plate 1652.

[0026] The vacuum adsorption component 170 includes a sliding plate 171, which is disposed on both sides of the top of the mold body 150. Adsorption plates 172 are rotatably connected to the opposite side of the sliding plates 171. The adsorption plates 172 are hollow, and suction holes 173 are equally spaced at the bottom of the adsorption plates 172. Filter screens are installed at the suction holes 173. A vacuum pump 174 is fixed to the back of the base 110. The suction end of the vacuum pump 174 is connected to a suction pipe 175, and a suction pipe 176 is connected to one side of the suction pipe 175. The other ends of the suction pipe 176 and the suction pipe 175 are connected to the top of the adsorption plate 172. When the vacuum pump 174 is turned on, a negative pressure can be generated in the adsorption plate 172 through the suction pipe 175. Since the adsorption plate 172 is located at the open top of the mold body 150, it can adsorb the air bubbles that float between the particles of the mold body during the impact, thereby quickly removing the gas overflowing from the mold body 150.

[0027] The vacuum adsorption component 170 also includes a force-applying component 177, which includes a movable ring 1771 slidably connected to the vertical rod 120. A force-applying rod 1772 is hinged between the movable ring 1771 and the sliding plate 171. A transmission rod 1773 is fixed to the bottom of the movable ring 1771. The other end of the transmission rod 1773 slides through the interior of the support plate on the base 110. A second spring 1774 is sleeved on the transmission rod 1773. The two ends of the second spring 1774 are respectively connected to the bottom of the movable ring 1771 and the top of the support plate. When the upper pressure head 142 moves downward to the position of the movable ring 1771, it will squeeze the movable ring 1771 and drive the movable ring 1771 to move downward, causing the force rod 1772 to deflect and drive the slide plate 171 and the suction plate 172 to move outward. When the movable ring 1771 moves, it will also drive the transmission rod 1773 to move and squeeze the spring 1774. After the suction plate 172 moves, it will facilitate the upper pressure head 142 to enter the mold body 150 for pressurization.

[0028] It also includes a sealing element 180, which includes a piston rod 181 fixed behind the upper pressure head 142. A piston tube 182 slides through the surface of the other end of the piston rod 181. The piston tube 182 is fixed behind the mold body 150. Airbags 184 are fixed on both sides of the bottom of the adsorption plate 172. Connecting pipes 183 are connected to both sides of the bottom end of the piston tube 182. The connecting pipes 183 are flexible hoses. One-way valves are installed on the connecting pipes 183 and the air inlet of the piston tube 182. The other end of the connecting pipes 183 is connected to the rear of the airbags 184. When the upper pressure head 142 moves downward, it will drive the piston rod 181 into the piston tube 182 to transport the gas in the piston tube 182. Then the gas will be transported to the airbags 184 through the connecting pipes 183, causing the airbags 184 to expand, thereby improving the sealing between the adsorption plate 172 and the top of the mold body 150, and facilitating better vacuum adsorption.

[0029] Working principle: During use, all raw materials can be put into the vacuum mixer, and the chamber is evacuated to 0.082 to -0.09 MPa. Wet grinding and mixing for 14 to 16 minutes completes degassing and mixing. Then, the mixture is filled into the molding die, and the bottom vibrates at a low frequency for 40 to 50 seconds to rearrange the particles and release interstitial air. Next, the adsorption plate 172 is flipped over, exposing the top of the mold body 150. The mixed material is then poured into the mold body 150, and the adsorption plate 172 is closed. Then, through the double pressure component 140, the upper and lower molds of the mold body 150 are simultaneously and segmentally pressurized in both directions. The process involves sequentially performing low-pressure pre-compression at 5MPa, medium-pressure holding and venting at 16MPa, and high-pressure densification and shaping at 40MPa. Pressure is released and vented simultaneously during each stage of the holding process. During pressurization, the mold body 150 can be struck by the striking component 160, and the gas generated during the striking can be vacuum adsorbed by the vacuum adsorption component 170. Then, the material is degreased under negative pressure of 0.06MPa and temperature of 200–600℃, and then vacuumed to 0.09MPa. Next, it is vacuum sintered at 1740–1760℃ for 5 hours, and finally vacuum cooled to 800℃ before being ventilated to obtain a low-porosity magnesium-zirconium eutectic refractory material.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-porosity magnesium-zirconium eutectic refractory material, characterized in that, It is made from the following raw materials in parts by weight: 72-78 parts of fused magnesium-zirconium eutectic aggregate, 11-14 parts of high-purity fused magnesium micro powder, 6-9 parts of monoclinic zirconia micro powder, 2.2-3.6 parts of pre-synthesized magnesium-zirconium eutectic nanoparticles, 0.9-1.4 parts of yttrium-stabilized zirconia sintering aid, 2.1-2.8 parts of magnesium brine inorganic binder, and 0.12-0.28 parts of magnesium citrate dispersant and defoamer. The fused magnesium-zirconium eutectic aggregate has a three-stage continuous gradation, containing 5-8 mm coarse particles, 1-3 mm medium particles, and 0.1-0.5 mm fine particles. The magnesium brine inorganic binder is a saturated aqueous solution of magnesium chloride.

2. A method for preparing a low-porosity magnesium-zirconium eutectic refractory material, characterized in that, The preparation method described herein is used to prepare the magnesium-zirconium eutectic refractory material according to claim 1, and the method includes the following steps: S1. Put all raw materials into the vacuum mixer, evacuate the chamber to -0.082 to -0.09 MPa, and wet grind and stir for 14 to 16 minutes to complete the degassing and mixing. S2. Fill the mixture into the molding die and vibrate the bottom at a low frequency for 40-50 seconds to allow the particles to rearrange and release the air in the gaps. S3. The upper and lower molds are used for bidirectional synchronous segmented pressurization, and 5MPa low-pressure pre-pressurization, 16MPa medium-pressure holding and venting, and 40MPa high-pressure densification and shaping are performed in sequence. Pressure is released and venting is performed synchronously during each stage of the holding process. S4. The billet is slowly dehydrated by sequentially holding at 60℃ for 6 hours, 120℃ for 10 hours, and 180℃ for 8 hours. S5. First, degrease under a negative pressure of 0.06MPa and a temperature of 200-600℃, then evacuate to 0.09MPa, then vacuum sinter at 1740-1760℃ for 5 hours, and finally vacuum cool to 800℃ and then ventilate to obtain a low-porosity magnesium-zirconium eutectic refractory material.

3. A pressurizing device for low-porosity magnesium-zirconium eutectic refractory material, used for bidirectional pressure molding of material in a mold, comprising a base (110), characterized in that, Also includes: A vertical rod (120) is fixed around the top of the base (110), and a top seat (130) is fixedly connected to the top of the vertical rod (120). The mold body (150) is fixed on the vertical rod (120); A double pressure member (140) is disposed between the base (110) and the top seat (130). The double pressure member (140) pressurizes the material in the mold body (150) by moving in both directions. The striking element (160) is set on both sides of the mold body (150). It performs a striking action on the mold body (150) by applying the downward pressure of the double pressure element (140) and using the striking element (160). A vacuum adsorption component (170) is disposed above the mold body (150) and is used to apply vacuum negative pressure to the mold body (150).

4. The pressurization device for a low-porosity magnesium-zirconium eutectic refractory material according to claim 3, characterized in that: The dual pressure member (140) includes: Hydraulic rod one (141) and hydraulic rod two (143) are fixed to the top of the top seat (130) and the inside of the base (110), respectively; The upper pressure head (142) is fixed on the output shaft of the hydraulic rod (141) and its lower end is adapted to the top of the mold body (150); The lower pressure head (144) is fixed on the output shaft of the hydraulic rod (143), and both the lower pressure head (144) and the upper pressure head (142) are slidably connected to the vertical rod (120); The top plate (145) is slidably connected inside the mold body (150), and the bottom of the top plate (145) is connected to the slide rods on both sides of the top of the pressure head (144).

5. The pressurization device for a low-porosity magnesium-zirconium eutectic refractory material according to claim 4, characterized in that: The striking element (160) includes: A support frame (161) is fixed on both sides of the top of the base (110), and a movable rod (162) is rotatably connected to the inner side of the support frame (161). Gear (163), which is fixed to one end of movable rod (162); A rack plate (164) is fixed on both sides of the upper pressure head (142), and one side of the hydraulic rod (141) meshes with one side of the gear (163).

6. The pressurization device for a low-porosity magnesium-zirconium eutectic refractory material according to claim 5, characterized in that: The striking element (160) further includes a striking assembly (165), the striking assembly (165) comprising: A movable rod (1651) slides through the interior of one side of the support frame (161). One end of the movable rod (1651) is fixedly connected to a striking head (1653), and the other end of the movable rod (1651) is fixedly connected to a push plate (1652). Spring 1 (1654) is sleeved on the surface of the moving rod (1651), and the two ends of the spring 1 (1654) are fixed to one side of the push plate (1652) and the inner wall of one side of the support frame (161), respectively. Cam (1655), which is fixed to the other end of movable rod (162).

7. The pressurization device for a low-porosity magnesium-zirconium eutectic refractory material according to claim 6, characterized in that: A roller (1656) is rotatably connected to one side of the push plate (1652), and the roller (1656) is in rolling connection with the cam (1655).

8. The pressurization device for a low-porosity magnesium-zirconium eutectic refractory material according to claim 4, characterized in that: The vacuum adsorption component (170) includes: Slide plates (171) are set on both sides of the top of the mold body (150). Adsorption plates (172) are rotatably connected to the opposite side of the slide plates (171) on both sides. The adsorption plates (172) are hollow. Suction holes (173) are evenly spaced at the bottom of the adsorption plate (172), and a filter screen is installed at the suction holes (173); A vacuum pump (174) is fixed on the back of the base (110). The suction end of the vacuum pump (174) is connected to a suction pipe (175), and one side of the suction pipe (175) is connected to a suction pipe (176). The other ends of the suction pipe (176) and the suction pipe (175) are connected to the top of the adsorption plate (172).

9. The pressurization device for a low-porosity magnesium-zirconium eutectic refractory material according to claim 8, characterized in that: The vacuum adsorption component (170) further includes a force-applying component (177), which includes: A movable ring (1771) is slidably connected to a vertical rod (120), and a force-applying rod (1772) is hinged between the movable ring (1771) and the sliding plate (171). A transmission rod (1773) is fixed to the bottom of a movable ring (1771), and the other end of the transmission rod (1773) slides through the interior of a support plate on the base (110). Spring 2 (1774) is sleeved on transmission rod (1773), and the two ends of spring 2 (1774) are fixed between the bottom of movable ring (1771) and the top of support plate, respectively.

10. The pressurization device for a low-porosity magnesium-zirconium eutectic refractory material according to claim 4, characterized in that, It also includes a seal (180), the seal (180) comprising: A piston rod (181) is fixed behind the upper pressure head (142), and a piston tube (182) slides through the surface of the other end of the piston rod (181), and the piston tube (182) is fixed behind the mold body (150); Airbags (184), which are fixed to both sides of the bottom of the adsorption plate (172). A connecting tube (183) is connected to both ends of the piston tube (182), and the other end of the connecting tube (183) is connected to the rear of the airbag (184).

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