the pressure injection and solidification module comprises a pressure-bearing track device, a pressure injection wheel device and a pressure solidification wheel device located at front and back sides above the pressure-bearing track device, a powder spraying device located in front of a bottom of the pressure-bearing track device, and a slurry conveying device located in back of the bottom of the pressure-bearing track device;

the pressure-bearing track device comprises a support frame, a pressure-bearing track and front and back elastic wheel sets located on the support frame, and a plurality of sets of rubber hemispherical compaction grooves integrated on the pressure-bearing track; and the elastic wheel sets are configured to apply elastic compression to the pressure-bearing track;

the pressure injection wheel device comprises a conveying rotating shaft, a conveying fixed shaft embedded inside the conveying rotating shaft, and a pressure injection wheel located at an outer side of the conveying rotating shaft and fixed through a connecting frame; a plurality of sets of injection shells are distributed at an outer side of the pressure injection wheel; a vertically downward single liquid conveying line is provided inside the conveying fixed shaft; a plurality of pipes are distributed inside the conveying rotating shaft and connected to liquid conveying dispensing pipes, respectively; and an end of each of the liquid conveying dispensing pipes is connected to an injection pipe through a dispensing adapter;

the zonal temperature-controlled sintering module comprises a first-level spiral enclosure, a second-level spiral enclosure, a third-level spiral enclosure, and a fourth-level spiral enclosure that are arranged in sequence from inside to outside; and two top sides of a hopper are provided with conveying rollers supported at a bottom of the fourth-level spiral enclosure;

an upper front end of the pressure-bearing track is provided with a feeding, crushing, and pushing device for pushing a material in a cylindrical shape into the corresponding rubber hemispherical compaction groove;

the powder spraying device is configured to spray powder into the rubber hemispherical compaction grooves to prevent material adhesion; the slurry conveying device is configured to convey slurry to the conveying fixed shaft; when the conveying rotating shaft rotates, a baffle mechanism inside the pressure injection wheel drives the injection pipe to move downward and pass through the injection shell to inject the slurry into a center of the material in the rubber hemispherical compaction groove; and a reset spring on the injection pipe rebounds to complete the injection; and

the pressure solidification wheel device is configured to compress the material in the rubber hemispherical compaction groove into a spherical aggregate; when the pressure-bearing track continues to convey the spherical aggregate, the spherical aggregate falls off due to gravity and is sent to the rolling particle screening module through the corresponding conveyor belt; a scraper of the rolling particle screening module is configured to push the spherical aggregate to continuously roll and enter the zonal temperature-controlled sintering module through the corresponding conveyor belt; when the zonal temperature-controlled sintering module rolls, the spherical aggregate passes through the first-level spiral enclosure, the second-level spiral enclosure, the third-level spiral enclosure, and the fourth-level spiral enclosure in sequence to complete sintering of the spherical aggregate and to undergo cooling treatment inside the fourth-level spiral enclosure; and the spherical aggregate is conveyed to the magnetic shell reinforcement module through the corresponding conveyor belt and undergoes impact shell reinforcement inside the magnetic shell reinforcement module.