53 results about "Cryogenic grinding" patented technology

A glassy electroactive prepreg made by generating submicron particles of lithium-ion conducting sulfide glass by providing lithium-ion conducting sulfide glass feedstock material, and subjecting the feedstock material to subzero processing to transform the material into submicron particles can avoid plastic deformation of sulfide glass particles during grinding and produce submicron powders. The prepreg is formed by providing a porous electroactive layer comprising electroactive material, and infiltrating the porous electroactive layer with the submicron particles of lithium-ion conducting sulfide glass. The subzero processing can include cryogenic processing. The prepreg can be used to form glassy embedded electrodes.

The invention discloses a pretreatment device for grain mycotoxin detection in the technical field of mycotoxin detection, and the pretreatment device comprises a base, a grinding groove assembly and a first liquid cooling assembly are arranged in the base, a supporting rod is fixedly connected to the base, a grinding head assembly is hinged to the supporting rod, and a second liquid cooling assembly and a liquid supply assembly are arranged in the grinding head assembly. A controller, an extraction liquid storage tank and a cooling liquid storage tank are fixedly connected to the side wall of the base, and the grinding groove assembly, the first liquid cooling assembly, the grinding head assembly, the second liquid cooling assembly and the liquid supply assembly are all in signal connection with the controller. The device is novel and effective, a low-temperature-resistant extracting agent is adaptively supplied while the to-be-detected sample is ground and crushed at a low temperature by the grinding head, the grinding head is rinsed to improve the grinding efficiency, and meanwhile, the extraction effect of the extracting agent on the to-be-detected sample mycotoxin is enhanced by virtue of pressure and shearing force during grinding, so that the accuracy of a subsequent detection result is ensured; the detection work efficiency is improved, and the detection time and difficulty are reduced.

The invention relates to the technical field of separation methods, in particular to an efficient separation method for effective components of plateau plants, which comprises the following steps: SI, sample collection and pretreatment; s2, efficient extraction; s3, preliminary separation of a crude extract; s4, fine separation and purification; s5, component identification and content determination; according to the separation method, the plant sample is ground at the low temperature of-150 DEG C to-180 DEG C by adopting a low-temperature grinding instrument, degradation and loss of effective components in the plant sample in the grinding process can be effectively reduced under the low-temperature condition, the stability of the components is kept, and the efficiency and purity of subsequent extraction and separation are improved; through two stages of primary separation and fine separation and purification of a crude extract, a plurality of advanced instruments and technologies including a high performance liquid chromatograph, a high-speed counter-current chromatograph, a preparative high performance liquid chromatography-mass spectrometry and the like are applied, so that a target component can be accurately separated from a complex plant extract; and the purity of the separated components is as high as 98%.

The invention relates to the technical field of blueberry puree preparation, and relates to a blueberry puree prepared based on cryogenic grinding, oxidation and isolation. The blueberry puree comprises the following components in parts by weight: 90-100 parts by weight of blueberries, 0.1-0.5 parts by weight of a composite stabilizer, 1-5 parts by weight of a honey protective agent, 0.03-0.05 parts by weight of an L-cysteinease inhibitor, and 0.3-0.7 parts by weight of a citric acid buffer. The composite stabilizer is obtained by mixing phytic acid, sodium pyrophosphate, and modified catechin in a ratio of 1:0.2-0.6:1-3, and the modified catechin is prepared by a glycosylation reaction of catechin and rhamnose in the presence of a rhamnosyltransferase catalyst. The composite stabilizer is used to improve the antioxidant capacity and the ability to stabilize active components in the blueberry puree preparation process, thereby extending the shelf life. At the same time, the cryogenic grinding, oxidation and isolation preparation technology is used to retain the nutrients and active substances in the blueberries to the greatest extent, thereby ensuring the high quality of the product.

The invention belongs to the technical field of power equipment resource recycling, and particularly relates to a method for preparing silicon dioxide microspheres by using retired composite insulator silicone rubber through a pyrolysis method. The method provided by the invention comprises the following steps: soaking retired composite insulator silicone rubber in liquid nitrogen, and grinding at low temperature to obtain low-temperature ground silicone rubber; carrying out pyrolysis on the silicone rubber subjected to low-temperature grinding to obtain a silicon dioxide microsphere precursor in a rheological environment; the preparation method comprises the following steps: carrying out three-stage cooling and collision growth on a silicon dioxide microsphere precursor in a rheological environment, and re-sintering an obtained product to obtain the silicon dioxide microspheres, the particle size of the silicon dioxide microspheres is 800 nm to 3 microns. The method provided by the invention not only can realize resource reutilization of the decommissioned composite insulator silicone rubber, but also can obtain the high-performance (high sphericity and high purity) silicon dioxide microspheres, and provides a simple and convenient method for preparing the high-performance silicon dioxide microspheres.

This utility model discloses a pulverizing and grinding device for the production of ester raw materials, including a main support unit, a ball mill at the top of the main support unit, a secondary pulverizing device on one side of the main support unit, a material collection unit at the top feed end of the secondary pulverizing device, and the discharge end of the ball mill above the material collection unit, allowing the discharge from the ball mill to enter the material collection unit. Air nozzles and air outlets are provided on both side walls of the secondary pulverizing device, and sealed conveying units are provided at both the top feed end and the bottom discharge end of the secondary pulverizing device. This utility model addresses the problems of localized temperature rise in existing grinding equipment leading to thermal decomposition of ester raw materials and insufficient grinding precision. It employs multi-stage pulverization, coarsely pulverizing followed by ultrafine grinding, reducing the energy consumption of a single device. Furthermore, a low-temperature medium is introduced during the fine grinding process for cryogenic pulverization or low-temperature grinding, inhibiting the thermal degradation of esters, thus meeting the high standards required in the food, pharmaceutical, and other fields.

The utility model discloses a stone mill cooling device for sesame paste production, which comprises a lower millstone, a material frame is integrally formed at the bottom of the lower millstone, a discharge port is arranged on the side surface of the material frame, a motor is arranged at the bottom of the lower millstone, an output shaft of the motor penetrates to the upper part of the lower millstone and is fixedly connected with an upper millstone, and a cavity is arranged at the bottom of the lower millstone. A mounting plate is fixedly connected below the inner cavity of the lower millstone, a motor is fixedly connected with the mounting plate, a box body is fixedly connected to the top of the inner cavity of the lower millstone, the outer side of the box body is attached to the inner wall of the lower millstone, an opening is formed in the top of the box body, and a sealing bearing is fixedly connected to the bottom of the box body. Compared with the prior art, the sesame paste low-temperature grinding device has the advantages that the size is not additionally increased, the occupied space of the device is small, the lower grinding disc can be cooled to the temperature far lower than the room temperature, and the low-temperature grinding effect on sesame paste can still be guaranteed in the environment with the overall temperature of the room temperature being high.

The present invention belongs to the technical field of biomass extraction. More specifically, it relates to a production process of tea seed essence. The production steps of the present invention include: mixing camellia seed meal and water, and performing ultrasonic impregnation to obtain an impregnation solution; mixing starch and water and gelatinizing to obtain a gelatinized starch solution; adding the gelatinized starch solution to the impregnation solution, mixing evenly, and freezing to obtain a solid mixture; performing cryogenic grinding on the solid mixture to obtain a ground material; completely thawing the ground material to obtain a ground slurry; adding a gelatin solution to the ground slurry and stirring and mixing evenly to obtain a mixed slurry; adjusting the pH of the mixed slurry to obtain an acidified mixed slurry; adding a composite enzyme solution to the acidified mixed slurry, performing an enzymatic hydrolysis reaction, then adding an amylase solution, continuing to keep warm for the enzymatic hydrolysis reaction, inactivating the enzyme, separating, and taking the supernatant; purifying and drying the supernatant to obtain the tea seed essence.

The invention provides a veratrone production raw material low-temperature grinding device, and relates to the technical field of raw material grinding water pumps, the veratrone production raw material low-temperature grinding device comprises a shell assembly, a cooling assembly and a discharging assembly, the shell assembly comprises a box body and a conical cylinder, a feeding assembly is installed on one side of the conical cylinder, and the feeding assembly comprises a hopper and a discharging valve; the low-temperature grinding device comprises a box body, a grinding assembly is installed on the inner side of the box body, the grinding assembly comprises an upper roller and a lower roller, a material guiding assembly is installed on the upper roller, the material guiding assembly comprises a funnel and a connecting rod, and a driving assembly is installed on the inner side of the box body. According to the low-temperature grinding device for the veratrone production raw materials, the veratrone does not have enough speed to penetrate through the gap between the adjacent rotary blades to flow to the inner side of the air pipe, so that the veratrone is downwards knocked down to the bottom of the conical barrel by the rotary blades, the ground raw materials are quickly screened, the safe grinding work of the raw materials is guaranteed, and the low-temperature grinding device is suitable for low-temperature grinding of the veratrone production raw materials.

The invention relates to a process for producing Fe-Cr-Ni austenitic steel reinforced by an oxide dispersion, said process comprising the following steps: a) supplying (100) Fe-Cr-Ni austenitic steel powder; b) carrying out (200) a grinding, called cryogenic grinding, of the Fe-Cr-Ni austenitic steel powder at a temperature between -50°C and -196°C; c) supplying (300) an oxide powder; d) carrying out (400) a co-grinding of the Fe-Cr-Ni austenitic steel powder with the oxide powder thus supplied to obtain Fe-Cr-Ni austenitic steel powder reinforced by an oxide dispersion; and e) producing (500) the Fe-Cr-Ni austenitic steel reinforced by an oxide dispersion from the powder thus produced. Figure for the summary: Figure 1

The present application relates to the technical field of dielectric ceramic powder preparation, and particularly relates to a multilayer ceramic capacitor and a method for preparing high-performance nano-barium titanate powder used for the multilayer ceramic capacitor, the method comprising the following steps: high-purity titanium hydroxide precursor and solid-state barium source are mixed under the condition of deep cold medium at low temperature, so as to form an amorphous composite precursor with high reactivity, and finally, the nano-barium titanate powder is generated through a hydrothermal synthesis reaction. The present application realizes the forced mixing of the titanium hydroxide precursor and the solid-state barium source at the solid state through the low-temperature cryogenic grinding, so as to physically ensure that the Ba / Ti ratio is highly consistent in each micro area, and the problem of the out-of-control stoichiometric ratio is solved from the source. Meanwhile, the high activation of the precursor shortens the hydrothermal reaction time, greatly reduces the calcination temperature, effectively inhibits the abnormal growth of the crystal grains, and makes the product particle size distribution narrower and the performance better.

The invention belongs to the technical field of food processing, and discloses a deep processing method and application of tenebrio molitor, and the deep processing method comprises the following steps: step 1, pretreatment; step 2, screening and cleaning in the body; step 3, cleaning and drying; step 4, stir-frying and processing; step 5, screening and removing; 6, low-temperature grinding; and step 7, mixing and packaging. Through whole-process standardized management and control, raw materials and finished products are controlled layer by layer, the quality consistency of deep processing products of the tenebrio molitor is guaranteed, and the method is suitable for being applied to multiple fields of food, feed and the like; an in-vivo cleaning and environment regulation technology is adopted, so that raw material impurities and metabolic residues are remarkably reduced, and the product safety is improved; the processes of segmented frying, two-stage grinding and the like are adopted, so that the taste and the material fineness are optimized, and the high-added-value application is expanded; nitrogen-filled packaging, barrier materials and multiple detection are adopted, the shelf life of products is prolonged, the quality risk is reduced, the market circulation stability is enhanced, the follow-up impurity treatment cost is reduced through directional cleaning and a segmented process, and actual application and operation are facilitated.

The application belongs to the field of food processing, and discloses a low-temperature grinding device for whole grains and food and a production process. The material of the upper grinding disc is silicon nitride, the material of the lower grinding disc is silicon carbide, the bottom surface of the upper grinding disc is a concave inverted cone shape, the top surface of the lower grinding disc is a concave inverted cone shape, the bottom surface of the upper grinding disc cooperates with the top surface of the lower grinding disc, the top surface of the upper grinding disc is provided with an upper grinding disc water channel, a water outlet and a water inlet are arranged on the upper grinding disc shell, and the water outlet and the water inlet are both in communication with the inside of the upper grinding disc water channel. A plurality of upper grinding disc grooves are arranged on the bottom surface of the upper grinding disc. Through the device, the upper grinding disc and the lower grinding disc can be cooled during the grinding process, and vitamins can be preserved during the grinding process, so that the flavor and nutrition of the flour are improved.

1. The name of the design product: full-automatic frozen knife type grinding instrument. 2. The use of the design product: after the sample to be ground is frozen by liquid nitrogen, low-temperature grinding is carried out, and the grinding problem of samples sensitive to high temperature is solved. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view.

The present invention provides a kind of polyamide powder coating for electrostatic spraying.The powder coating is obtained by cryogenic grinding of a polyamide resin, which contains a large number of terminal hydroxyl groups that are easily polarized during electrostatic spraying.The polyamide powder coating has excellent powder coating rate, and the coating thickness formed by a single spraying through the electrostatic spraying process can reach more than 150 microns.

This utility model discloses a low-temperature grinding and cooling structure for a coffee machine, relating to the field of coffee machine grinding and cooling technology. It includes a machine body, a heat dissipation ring adhered to the outside of the grinding chamber, a liquid storage pipe fixedly installed on the outside of the heat dissipation ring, heat absorption plates fixedly installed at both ends of the liquid storage pipe, and a fan fixedly installed on the side of the heat absorption plate by bolts. This utility model, through a grinding and cooling mechanism with better cooling effect, includes a grinding chamber inside the coffee machine, with the heat dissipation ring tightly attached to the outside of the grinding chamber. Multiple heat dissipation rods are embedded inside the heat dissipation ring, all connected to a heat collection plate at the lower end. The heat dissipation ring is made of copper sheet, which can effectively absorb heat. A fan is installed on the side of the heat dissipation plate to continuously dissipate heat, keeping the temperature of the liquid inside the liquid storage pipe low and continuously absorbing heat dissipated from the grinding chamber. A hollow heat absorption rod is installed inside the top storage chamber to continuously cool the coffee beans, reducing the temperature generated during grinding.

The invention discloses a self-adaptive temperature control white pepper low-temperature grinding system and method, and the system comprises a data collection module which collects the humidity, the initial granularity and the grinding environment reference temperature of white pepper to be ground, and generates and reduces the noise of a material initial data set; the electrostatic preprocessing module receives the data and removes static electricity of the primarily screened white pepper according to humidity; the low-temperature grinding module receives the pretreated materials, grinds the pretreated materials at low temperature and synchronously collects real-time granularity, cavity temperature fluctuation and flavor substance volatilization amount; the temperature control analysis module performs coupling analysis on the data, determines a temperature deviation range and corrects a temperature adjustment coefficient; and the self-adaptive execution module adjusts the cavity temperature and the grinding rotating speed to finish low-temperature grinding of the white pepper. Through cooperation of multiple modules, accurate acquisition and processing of initial data of materials, static elimination and combination of real-time grinding data coupling analysis and self-adaptive temperature and speed regulation, the grinding process can be effectively controlled, it is ensured that the grinding granularity reaches the standard, and the grinding quality is improved.

The invention belongs to the technical field of soft magnetic materials, and particularly relates to a preparation method and application of iron-silicon powder. The preparation method of the iron-silicon powder comprises the following steps: melting, atomizing and screening raw materials to obtain atomized iron-silicon powder; pre-cooling the atomized iron-silicon powder, and then carrying out low-temperature grinding, screening and heat treatment to obtain iron-silicon powder; the atomized iron-silicon powder comprises the atomized iron-silicon powder with the particle size larger than or equal to 200 meshes and smaller than or equal to 60 meshes; the pre-cooling temperature and the low-temperature grinding temperature are both-160 DEG C to-90 DEG C. According to the method, the atomized iron-silicon alloy powder is subjected to pre-cooling treatment, the mechanical abrasiveness can be improved, grinding is conducted under the low-temperature condition, the iron-silicon powder has the good grinding effect, the grinding efficiency can be improved, the powder yield is increased, the powder is fine, and meanwhile the oxygen content is lower. In addition, the problems that the atomized iron-silicon powder with the particle size larger than 200 meshes needs to be returned to a furnace, the economic benefit is poor, and the recovery rate is low can be solved.

The invention discloses a low-temperature grinding and mixing process of a spice composition, and relates to the technical field of spice grinding and mixing, and the low-temperature grinding and mixing process comprises the following steps: S1, placing pre-cooled spice composition particles in a grinding base, and flattening; s2, a driving assembly drives a grinding roller to conduct rolling grinding and smashing on the spice composition particles in the grinding base; s3, a bulldozing assembly periodically and alternately slides under the action of an adjusting assembly to dredge and scrape spice composition particles in the grinding base, spices are turned over in real time to be fully ground, and the mixing uniformity is improved; s4, spice particles are ground and smashed under the cooperation of a discharging assembly and a grinding roller, large-particle spice is screened through a bulldozing assembly to be ground again, the spice is dredged and prevented from gathering, and the discharging assembly discharges ground spice powder in time under the combined action of the bulldozing assembly; according to the spice grinding device, ground spice powder can be discharged in time, fragrance loss is avoided, and the spice grinding effect is improved.

The utility model relates to the technical field of pyraclostrobin suspending agent grinding, and discloses a pyraclostrobin suspending agent low-temperature grinding device which comprises a retaining liquid storage chamber, a device box, a grinding assembly and a sealing cover, cooling medium liquid is filled in the retaining liquid storage chamber, the upper edge of the device box is detachably connected to the upper edge of the retaining liquid storage chamber, and the sealing cover is arranged on the device box. The device box is limited in the holding liquid storage chamber, supporting holes are formed in the inner wall of the device box, and the grinding assembly is detachably connected into the device box through the supporting holes. The grinding assembly comprises a bearing box and a connecting cover, a connecting column is fixed to the outer wall of the bearing box, and the other end of the connecting column can be limited in the supporting hole. The grinding ball is placed in the bearing box, the bearing box is of a hollow structure, the connecting cover is detachably connected to the top of the bearing box, the device box is arranged in the holding liquid storage chamber, the grinding assembly is installed in the device box, the device is placed into a three-dimensional vibration ball mill to be vibrated, the grinding ball can shake in the grinding assembly, and therefore low-temperature grinding treatment is completed.

The invention discloses a low-temperature grinding system for an inner hole of a high-borosilicate precise microsyringe, and relates to the technical field of syringe machining. The device comprises a mounting plate with a motor-driven locking plate, a walnut shell powder placing barrel, a penetrating rotating shaft, a spiral swing piece of the penetrating rotating shaft, a negative pressure cavity, a piezoelectric vibration assembly and an automatic reset stable supporting mechanism. During working, the syringe wing support is bidirectionally fixed with the negative pressure adsorption device through the locking plate; frozen walnut skin powder enters an inner hole of the injector under the action of piezoelectric vibration and a double-helix flow field, mirror-surface-level grinding is conducted on the hole wall in the low-temperature and high-hardness state, and meanwhile uniform grinding is guaranteed through centrifugal force and axial pushing. After machining is finished, the negative pressure is relieved, the gear-spring mechanism enables the supporting arm to automatically swing away, and the next workpiece is rapidly replaced.

Disclosed are nanostructured materials, devices, systems and methods of their fabrication using cryogenic milling techniques. In some embodiments in accordance with the disclosed technology, a cryogenic milling method for fabricating electrode materials for batteries is described, which can be used to fabricate high volumetric / gravimetric capacity SnSb—C (tin-antimony with carbon) anode material and other alloy / intermetallic type carbon composite battery anode materials for lithium-ion batteries with significantly improved battery energy density and cycle life.

The utility model is applicable to the technical field of grinding equipment, and provides color master batch low-temperature grinding production equipment, which comprises a spare box, a fixing frame, a guide pipe, a refrigerating machine, a hopper, a feeding pipe and a discharging disc, and further comprises a grinding mechanism, an adjusting mechanism and a pressing mechanism, and the pressing mechanism is mounted in the guide pipe. According to the low-temperature grinding production equipment for the color master batches, the grinding mechanism is matched with the pressing mechanism, the guide pipe, the feeding pipe and the hopper, so that the color master batches can be continuously ground, and the adjusting mechanism is matched with the fixing frame, so that the production efficiency is improved according to actual production requirements. And the grinding space between the guiding and conveying pipe and the grinding mechanism is rapidly and effectively changed, and then the grinding granularity of the color master batch is rapidly adjusted in time, so that the grinding efficiency and the grinding quality of the equipment can be improved, and the flexibility, the practicability and the convenience of the equipment can also be enhanced.

The present invention relates to a composition and a method for cryogenic grinding of tissue and, more specifically, to a composition and a method for cryogenic grinding of tissue, wherein the composition is applicable to both hard tissue and soft tissue and causes minimal damage to an extracellular matrix by comprising biologically derived tissue and a solid crystalline granular material which is used by being mixed with the biologically derived tissue during cryogenic grinding of the biologically derived tissue and is capable of decellularizing the tissue.

The utility model relates to the technical field of biopharmaceutical auxiliary instruments, in particular to a low-temperature biological tissue dispersing and homogenizing device which comprises a frame body and a homogenizer, the frame body comprises a base, a vertical pipe arranged on the base, a lower support used for fixing an EP pipe and an upper support arranged above the lower support and used for placing the homogenizer, and the vertical pipe is arranged on the base. The upper support and the lower support are both arranged on the vertical pipe; the EP pipe cooling device further comprises a cooling pipe assembly and a cooling liquid circulating pump, the cooling pipe assembly is arranged on the outer wall of the EP pipe in a sleeving mode, and the cooling liquid circulating pump is communicated with the cooling pipe assembly so as to circulate cooling liquid in the cooling pipe assembly. The problem that the low-temperature environment is affected by heat generated in the homogenizing process of biological tissue is solved, and the low-temperature grinding effect is improved.

The invention discloses a low-temperature dehumidification evaporator, relates to the technical field of dust filtration, and aims to solve the technical problem that an existing low-temperature dehumidification evaporator is prone to dust pollution in a low-temperature grinding environment of a flourmill. The low-temperature dehumidification evaporator comprises a dehumidification equipment body, an air inlet and a water outlet are formed in one side of the dehumidification equipment body, and an air outlet is formed in the other side of the dehumidification equipment body; a barrel is arranged on the side of the dehumidification equipment body, a filtering assembly and a pre-dehumidification assembly are arranged in an inner cavity of the barrel, the filtering assembly comprises a fixed block and a movable block, a filtering channel can be formed between the fixed block and the movable block, the pre-dehumidification assembly comprises a low-temperature pipe, and the output end of the low-temperature pipe is connected with the top of the fixed block and communicated with the filtering channel. The low-temperature dehumidification evaporator has the advantages that flour dust in air can be deeply purified, the flour dust is filtered by utilizing the characteristic that the flour dust is easily adsorbed by water, the problems of deposition and pollution of the dust in the equipment are reduced, and the cleanness of the interior of the low-temperature dehumidification evaporator is guaranteed.

The invention relates to the technical field of material science and environmental engineering, in particular to a preparation method of polyaluminum chloride for treatment. According to the method, the aluminum-lithium-rich biological activation solution is prepared by cryogenic crushing of the waste aluminum-lithium alloy through liquid nitrogen, a light-operated piezoelectric biological precursor is constructed in combination with piezoelectric barium titanate nanowires, a genetic engineering bacterial agent and photosensitive channel protein, and the product is endowed with multiple physical field response capability by further utilizing an acousto-optic coupling reaction and magneto-optic-acoustic response gel technology. Through the synergistic effect of the dynamic covalent hydrogel and the mussel mucin, the self-repairing function is realized. Finally, high-purity and high-stability polyaluminum chloride is formed through biomimetic mineralization packaging. According to the invention, the limitation of single function of the traditional flocculant is broken through, so that the product has the characteristics of efficient water purification, intelligent response, self-repairing capability and environmental friendliness, the adsorption efficiency is remarkably improved, the service life is remarkably prolonged, and the flocculant is suitable for scenes of complex water purification, industrial wastewater treatment, intelligent water treatment systems and the like.

A cryogenic grinding system, method, and apparatus for processing a sample. The system includes a cryogen source, a containment vessel for containing the sample and the cryogen, a blade for grinding the sample, and a controller. The controller controls at least one of: a quantity of cryogen introduced into the container; a grinding duration of the at least one blade; or a grinding speed of the at least one blade based on at least one of: a user input via a grinding system input, a mass of the sample placed in the containment vessel; or a temperature within the containment vessel.

The invention discloses an Ag2S-based composite thermoelectric material and a preparation method thereof, and belongs to the technical field of thermoelectric material preparation. The method comprises the following steps: preparing an Ag2S cast ingot by adopting a melting method, preparing the Ag2S cast ingot into Ag2S powder in a low-temperature grinding manner, preparing Ti3AlC2 into Ti3C2Tx powder by adopting a lithium fluoride etching method, fully mixing the two kinds of powder in a grinding manner after the two kinds of powder are prepared, preparing a Ti3C2Tx / Ag2S composite material by adopting a die-casting method, and doping a proper amount of Ti3C2Tx into Ag2S to obtain the Ti3C2Tx / Ag2S composite material. The carrier transport can be optimized, the carrier concentration is improved to improve the conductivity, and finally the thermoelectric performance is improved. Practice proves that the method provides a brand new way for performance optimization of the thermoelectric material.