217 results about "Powder injection" patented technology

The invention discloses a direct-current hollow electrode hydrogen plasma furnace mineral powder smelting system and method and application, and belongs to the technical field of hydrogen metallurgy. The system comprises a hollow electrode gas powder injection hydrogen plasma gun system, a direct current bottom electrode ore-smelting electric furnace system, a fine ore and hydrogen supply system and the like. The hollow electrode and the furnace bottom electrode form a direct-current arc, hydrogen carrying mineral powder is sprayed into an arc area to generate high-temperature hydrogen plasma, mineral powder reduction is achieved, and metal and slag are separated. According to the method, hydrogen serves as a reducing agent, carbon emission is reduced, the reaction efficiency is high, energy consumption is low, and the method can be used for steelmaking, smelting of micro-carbon ferromanganese and titanium slag and recovery of valuable metal in nonferrous smelting waste slag and has good green metallurgy application prospects.

The invention discloses a compound liposome, a freeze-dried powder injection as well as a preparation method and application of the freeze-dried powder injection. The compound lipidosome comprises a lipidosome membrane and an inner water phase encapsulated in the lipidosome membrane, the paclitaxel palmitate is encapsulated in a lipid bilayer of the liposome membrane; the gemcitabine or the salt thereof is encapsulated in the inner water phase; the compound liposome comprises the following raw materials: paclitaxel palmitate, lecithin, a polyethylene glycol derivative, gemcitabine or a salt thereof, an organic solvent and a buffer solution A; the molar ratio of the lecithin to the polyethylene glycol derivative is 1: (0.01-0.15). The compound liposome disclosed by the invention is relatively high in encapsulation efficiency (especially the encapsulation efficiency of PTX-PA is relatively good) and relatively high in safety, the preparation method is simple and easy to operate, the industrialization degree is high, and the prepared compound liposome has a relatively good long-circulation effect, a relatively good anti-tumor effect and good in-vivo tolerance.

The invention relates to the technical field of ferrous metallurgy and solid waste treatment, in particular to an efficient utilization production process of iron-containing ore powder and slag powder, which comprises the following steps: preheating the iron-containing ore powder ground by a grinder by a preheater, and feeding the iron-containing ore powder into a reduction furnace; a fan provides aerodynamic force, high-temperature gas obtained after air is preheated by a hot-blast stove and hydrocarbon such as pulverized coal sprayed from a pulverized coal feeding port are combusted, and generated reducing gas such as CO and H2 enters a reduction furnace through an annular exhaust outlet of a hearth and is subjected to a reduction reaction with iron-containing ore powder entering the reduction furnace and the high-temperature gas such as CO and H2 at high temperature; and reducing into metal iron powder and slag. Iron ore powder does not need to be made into prefabricated lump ores such as pellets and sinter, and dependence of a blast furnace on metallurgical coking coal is avoided; iron ore powder can be directly used for producing metal iron powder, water is saved, and the risk that high-temperature molten iron explodes when encountering water is eliminated; green hydrogen can be used as a reducing agent, and the method is a preferable scheme in the ferrous metallurgy industry.

The application discloses a converter top gun multifunctional combined injection equipment, which comprises a gas main pipeline, a top gun, a first weighing bin for containing a first powder, a second weighing bin for containing a second powder, a fluidized bed connected with the first weighing bin and the second weighing bin, and a first powder injection bin and a second powder injection bin connected with the fluidized bed, wherein the first weighing bin and the second weighing bin are connected with the gas main pipeline, and the first powder injection bin and the second powder injection bin are connected with the top gun; the first powder is a lime powder or a carbon powder, and the second powder is a lime powder or a carbon powder. The top gun multifunctional combined injection equipment can reduce the consumption of lime and steel materials in the converter process, improve the dephosphorization rate and the quality of molten steel, increase the scrap steel ratio and production efficiency, and realize high efficiency and green smelting. The application further discloses a converter top gun multifunctional combined injection process.

The invention relates to a component (50) obtained by injection molding, in particular from a mixture comprising an adhesive and a powder, the component having a plurality of protrusions (40) protruding from a main surface (241) of the component (50), the plurality of protrusions (40) comprising at least one first rib (41) and at least one second rib (42) intersecting at an intersection point (400) comprising a midpoint (44) of the component (50).

The application discloses a method for breeding Ptereleotris radiata by using siRNA molecules interfering with melanin tyr gene expression, wherein the sequence of the siRNA molecules is shown as SEQ ID NO. 6-35, and the siRNA molecules can interfere with the expression of melanin tyr gene in the skin tissue of Ptereleotris radiata. The siRNA sequence is designed and synthesized by using the melanin gene of Ptereleotris radiata, and a powder injection preparation containing the siRNA is obtained. The powder injection preparation is dissolved and injected into the body of Ptereleotris radiata. The individuals with faded melanin in the skin tissue of Ptereleotris radiata are screened out for breeding of parent fish and cross breeding, and the offspring of Ptereleotris radiata is obtained, wherein the skin tissue traits of the offspring are the same as those of the parent fish. By using the breeding method provided by the application, the melanin in the skin tissue of Ptereleotris radiata can be reduced and stably inherited, a foundation for obtaining Ptereleotris radiata varieties is laid, and the economic value of Ptereleotris radiata is improved.

The application relates to a compound cefoperazone and avibactam powder injection and a preparation method thereof. The compound powder injection is obtained by uniformly mixing cefoperazone hydrochloride and avibactam sodium, tabletting and crushing. When the powder injection is prepared into an injection solution, the powder injection is easy to disperse and dissolve, is convenient to use, ensures the content of cefoperazone, is not prone to produce beta-lactamase bacterial drug resistance, and has a good market application prospect.

The invention discloses vidarabine monophosphate lipidosome freeze-dried powder injection and a preparation method and application thereof, and belongs to the technical field of medicine, and the lipidosome is composed of vidarabine monophosphate, phospholipid, cholesterol, pegylated phospholipid and a freeze-drying protective agent (such as trehalose). By optimizing a formula and a preparation process, the liposome disclosed by the invention has excellent placement stability and freeze-drying stability, and can still keep good encapsulation efficiency and particle size distribution after long-term storage. By introducing polyethylene glycol (PEG), the retention time of liposome in systemic circulation is remarkably prolonged, and passive targeting enrichment of liver and spleen is reduced, so that the toxicity of immune organs is reduced, and the accumulation of drugs at focus parts is facilitated. The liposome has an excellent slow release characteristic, can improve the antiviral ability and cell entry ability of drugs and reduce toxic and side effects, and is suitable for treating viral infectious diseases, such as hepatitis B, herpes and the like.

The invention relates to the technical field of freeze-dried powder injections, in particular to a polypeptide conjugate fluorescent developer preparation composition as well as a preparation method and application thereof. The polypeptide conjugate fluorescence imaging agent preparation composition is prepared from the following raw materials: a combination of a polypeptide conjugate fluorescence imaging agent raw material medicine, an excipient and a pH buffering agent, and at least one of a solubilizer and a chelating agent is included or not included. By improving the formula and the process of the freeze-dried powder injection, the problems that a polypeptide conjugate fluorescence imaging agent is insoluble and poor in stability are solved, and the formability, the resolubility and the stability are remarkably improved.

This application discloses a method for offline analysis of powder ionization conditions, comprising the following steps: placing a silicon wafer on a target plate of a plasma device; generating a plasma beam under preset powder ionization conditions using the plasma device; injecting powder into the plasma device so that the plasma beam bombards the powder until powder injection is complete; detecting whether a first condition and a second condition are met, wherein the first condition includes at least 70% of the powder injected into the plasma device ablation and brightening upon bombardment by the plasma beam and / or forming a coating on the silicon wafer; the second condition includes the coating containing chemical bonds formed by elements of the powder and / or detecting spectral lines generated by ionization of the powder upon bombardment by the plasma beam. If the first and second conditions are met, the powder is determined to be effectively ionized. Otherwise, the powder is determined to be ineffectively ionized. The method of this application can obtain basic research data on the boronization of boron powder.

A powder treating apparatus using microwave torch plasma having a high edge area density is disclosed. The powder treating apparatus includes a microwave waveguide, wherein when a dominant mode waveguide for transmitting an electromagnetic wave of a specific frequency is a, the microwave waveguide has a width of na, where n is an integer greater than or equal to 2; a discharge tube vertically extending through the waveguide such that all of two or more peaks of an electric field distribution within the waveguide are positioned in an inner space of the discharge tube; a plasma discharge gas injection unit disposed at a side of one end in a vertical direction of the discharge tube and configured to inject the plasma discharge gas into the discharge tube; and a treatment target powder injection unit disposed at a side of the other end in the vertical direction of the discharge tube and configured to inject the treatment target powder into the discharge tube.

The invention relates to the technical field of ceramic metal powder production, and provides a ceramic metal powder injection-compression molding, blanking and demoulding all-in-one machine which comprises a tray feeding device, a turnover device and a discharging device. The mold discharging device is used for feeding a mold into the overturning device, and the mold is internally provided with a product formed through injection molding of ceramic metal powder. The overturning device is used for locking the mold, arranging the tray above the mold, pressing the tray at a forming notch of the mold, enabling the tray and the mold to overturn at the same time, separating the mold from the tray up and down, enabling the product to fall off from the mold to the tray, overturning the mold again after the tray is pushed out, and unlocking the mold; the pushing device is used for pushing the tray to the discharging device from the overturning device, the tray bears the product, and then the mold is pushed to the mold returning device from the overturning device. The automatic turnover demolding machine has the advantages that the turnover device automatically receives the mold and the tray for turnover demolding, and the tray and the mold are automatically and separately conveyed out under the cooperation of the pushing device and the turnover device.

The pre-encapsulation quantitative injector comprises a needle cylinder, a push rod and a push rod plug, the needle cylinder is internally provided with an injection cavity which is through front and back, the head end of the injection cavity is provided with an encapsulation connector, the tail end of the injection cavity is provided with the movable push rod, and the push rod plug is arranged at the tail end of the injection cavity. The head, arranged in the injection cavity, of the push rod is sleeved with the push rod plug; the head end of the needle cylinder is provided with an installation connector used for installing a needle head, and the installation connector is arranged on the outer side of the packaging connector in a wrapping mode. A sealing rubber plug is arranged on the inner side of the packaging connector, and liquid medicine is pre-filled and packaged between the sealing rubber plug and the push rod plug. And the inner diameter of the injection cavity is smaller than that of the mounting joint. According to the needle cylinder, by controlling the inner diameter size of the injection cavity in the needle cylinder, a user can conveniently and accurately grasp the medicine injection dosage after liquid medicine is mixed with medicine powder, and the needle cylinder structure matched with the universal two-end needle is designed according to the size of the injection cavity.

The present application relates to the technical field of medicine, in particular to a safe and stable nimodipine for injection and a preparation method thereof, and provides a nimodipine cyclodextrin freeze-dried powder injection containing sulfobutyl ether-beta-cyclodextrin, which can significantly improve the solubility, drug safety and dilution stability of nimodipine, increase the compliance of patients and the convenience of clinical use. Compared with the commercially available nimodipine injection, the safety and dilution stability of the present application are significantly improved, and the present application has obvious advantages.

The invention discloses a green low-carbon smelting reduction short-process smelting process and system. The green low-carbon smelting reduction short-process smelting process comprises the following steps: 1) screening an iron-containing material into an iron-containing fine material and an iron-containing coarse material; the iron-containing fine material is fed into a mineral powder blowing device; carrying out hydrogen group pre-reduction on the iron-containing coarse material, and mixing the iron-containing coarse material with an iron-containing fine material to obtain an iron-containing mixture; 2) grinding and drying the reduced material to obtain reduced powder; 3) cooling high-temperature coal gas discharged from the smelting reduction smelting furnace through heat exchange, purifying the coal gas into clean coal gas, and pressurizing one part of the clean coal gas into high-pressure clean coal gas; 4) taking a part of the high-pressure clean gas as injection carrier gas of the reduction powder, and injecting the reduction powder into an iron bath molten pool of the smelting reduction smelting furnace; the other part of the high-pressure clean gas is used as injection gas to inject the high-temperature gas, and the injected mixed injection gas is used as injection carrier gas of the iron-containing mixture. The method has the advantages of being short in process, low in carbon, green, environmentally friendly and the like, and the green and low-carbon smelting purpose of short smelting reduction process can be achieved.

The utility model discloses a slotting powder spraying device for a powder spraying system, and relates to the technical field of powder spraying devices. The device comprises a bottom plate, wherein the top of the bottom plate is in transmission connection with a conveying belt; a powder spraying assembly is arranged at the top of the bottom plate and comprises a box body, the box body is fixedly connected to one side of the top of the bottom plate, a rotating rod is arranged in the box body, vertical plates are fixedly connected to the two sides of the surface of the rotating rod, and nozzles are fixedly connected to the bottoms of the vertical plates. The transmission motor works to drive the transmission rod to rotate so as to drive the rotating plate to rotate, the rotating plate drives the connecting rod to rotate through the rotating shaft, the connecting rod drives the sliding plate to move through the rotating shaft, the sliding plate drives the movable rod to swing, the movable rod drives the rotating rod to rotate, the rotating rod drives the vertical plate to swing, and the vertical plate drives the nozzle to swing. Therefore, the spraying uniformity and the coverage range are improved, and the problem of uneven spraying caused by a traditional fixed nozzle is solved.

The utility model discloses a bi-component medicine powder racking machine which comprises a racking mechanism, the racking mechanism comprises a first powder injection part, a second powder injection part and a racking rotating disc capable of rotating, and a plurality of racking stations are arranged on the racking rotating disc. The first powder injection part and the second powder injection part are arranged above the subpackaging rotary disc in a spaced mode and used for injecting powder into the subpackaging bottles in the different subpackaging stations, and the multiple subpackaging stations are distributed in the circumferential direction of the subpackaging rotary disc at intervals. The utility model has the advantages of simple structure and low cost. The utility model has the advantages of simple structure and low cost.

The utility model belongs to the technical field of pulverized coal injection devices, and particularly relates to a wear-resisting and deformation-resisting pulverized coal spray gun which is provided with a high-temperature end gun barrel assembly, a low-temperature end steel pipe and a pulverized coal inlet wear-resisting steel pipe. The other end of the low-temperature end steel pipe is connected with one end of a pulverized coal inlet abrasion-resistant steel pipe, a cold-end protection steel pipe is welded to the outer portion of the connecting position of the low-temperature end steel pipe and the pulverized coal inlet abrasion-resistant steel pipe, and the high-temperature end gun barrel assembly is formed by connecting an inner composite ceramic steel pipe, a middle-layer anti-deformation steel pipe and an outer-layer anti-deformation steel pipe in a sleeved mode from inside to outside. A high-temperature end protection steel pipe is arranged outside the high-temperature end gun barrel assembly and the low-temperature end steel pipe, and two shock-stopping balls are welded outside the high-temperature end protection steel pipe; the utility model has the beneficial effects of strong anti-deformation capability, wear resistance, long service life, high production efficiency, convenience in installation and the like.

The invention belongs to the technical field of coal gas heating, and particularly discloses a metallurgical coal gas staged heating system and method, and the metallurgical coal gas staged heating system comprises a first-stage electric heating device and a second-stage electric heating device which are connected in sequence. The first-stage electric heating device adopts a resistance tube heating mode to preliminarily heat the metallurgical gas to 800 DEG C; the second-stage self-heating device is used for carrying out combustion reaction with high-temperature coal gas by blowing oxygen and carrying out quenching and tempering under the assistance of pulverized coal blowing, and finally, the coal gas is heated to 1400 DEG C or above. Thermocouples are arranged in the system to monitor temperature and pressure, and heating power and reaction gas flow are dynamically adjusted through a central controller, so that accurate temperature control is realized. Meanwhile, the system is provided with nitrogen switching, steam injection carbon deposition prevention and multiple safety protection facilities, the problems of insufficient temperature rise precision, high energy consumption, poor safety and the like in the prior art are solved, and efficient, safe and stable preparation of the high-temperature coal gas is achieved.

The invention discloses a water-soluble degreased metal powder injection molding process, which belongs to the technical field of metal powder injection molding, and comprises the following steps: pre-drying metal powder; the preparation method comprises the following steps: weighing the following raw materials in parts by weight: 40-60 parts of polyethylene glycol, 0-15 parts of high-density polyethylene, 0-30 parts of polypropylene, 10-30 parts of polymethyl methacrylate, 0-5 parts of polyformaldehyde, 0-7 parts of ethylene-vinyl acetate copolymer, 1-5 parts of stearic acid, 0-10 parts of dioctyl phthalate and 0-10 parts of maleic anhydride grafted polypropylene; performing mixing; dicing is performed; injection molding; degreasing is conducted; performing drying; and sintering. By optimizing a mixed binder formula and a feed preparation process, the fluidity stability of the feed is effectively improved, the feed is prevented from being adhered in a screw rod of an injection molding machine, the continuous and smooth charging barrel feeding and mold filling processes are ensured, the forming interruption or equipment cleaning frequency caused by the feeding problem is reduced, and the production efficiency is improved. And the batch production requirement of metal powder injection molding is met.

The invention discloses a method for producing low-nitrogen ultralow-sulfur steel by spraying powder on an RH furnace, which comprises the following steps of: vacuumizing after RH furnace molten steel enters a station, controlling the vacuum degree of a vacuum chamber of the RH furnace to be less than 10kPa, and then spraying denitrification powder for denitrification, adjusting components and spraying desulfurization powder for desulfurization to obtain the low-nitrogen ultralow-sulfur steel with the nitrogen content of less than or equal to 30ppm and the sulfur content of less than or equal to 30ppm. The problems that the denitrification efficiency of a traditional RH furnace is limited, and desulfurization and denitrification coupling control means are lacked are solved, and low-nitrogen ultra-low-sulfur steel is produced through the RH furnace.

The invention relates to the technical field of powder stamping equipment, in particular to automatic scraping equipment for powder stamping and an operation method. An h-shaped guide frame and a side seat; a sliding seat; a vibration seat; a sliding frame; a scraping seat; and a dust collection seat. Therefore, the equipment is adaptive to manual powder injection scenes of small and medium-sized enterprises, an existing platform does not need to be transformed, the cost is low, the equipment is compatible with molds of multiple specifications, the production requirements of multiple varieties are flexibly met, the stepped composite scraper is matched with vibration pretreatment, mold errors can be self-adapted, the powder state is optimized, the scraping missing problem caused by manual scraping is avoided, the product percent of pass is increased, and the production efficiency is improved. Manual work is replaced by automatic scraping, personnel allocation and punching machine idle time are reduced, production efficiency is improved, meanwhile, a closed space and a dust collection base are linked to prevent and control dust, loss is reduced through a wear-resisting scraping piece and a quick-release adjusting structure, operation is easy and convenient, and practicability is high.

The utility model relates to a sterilizing device for producing a sporopollen powder injection, which comprises a cylindrical sterilizing box, a multi-layer annular conveying component for conveying downwards is connected to the side wall of the sterilizing box, an inlet is formed in the top layer of the conveying component of the sterilizing box, an outlet is formed in the bottom layer of the conveying component, and both the inlet and the outlet are connected with a conveying line. And microwave generators are mounted at the top and the bottom of the disinfection box. According to the disinfection device for producing the agaricus bisporus powder injections, the disinfection time of the powder injections in the disinfection box is prolonged through the multiple layers of conveying assemblies in the disinfection box, meanwhile, the disinfection box is connected into the conveying line, continuous operation of disinfection and production is achieved, the production efficiency is not affected, and the disinfection quality is guaranteed.

Disclosed are a pharmaceutical composition, an aprepitant injection, and an aprepitant freeze-dried powder injection. The pharmaceutical composition comprises aprepitant, a primary stabilizer, and a secondary stabilizer, wherein the primary stabilizer comprises sodium deoxycholate and the secondary stabilizer comprises povidone. The aprepitant injection can be administered by injecting. The formulation uses a largely reduced amount of excipients, and is less irritative to an injection site, less prone to cause a hypersensitive reaction, and thus safer when being used by a patient. The formulation has good stability and can be stored and transported at room temperature, largely reducing production, storage, and transportation costs.

The invention discloses a powder injection system and a powder injection method.The powder injection system comprises a storage container and a powder injection device, the powder injection device comprises a coarse powder injection assembly and a fine powder injection assembly, and the coarse powder injection assembly and the fine powder injection assembly are both arranged above the storage container; a first powder injection opening is formed in the lower end of the coarse powder injection assembly, and powder is injected into the storage container in a free falling mode through the first powder injection opening; a second powder injection opening is formed in the lower end of the fine powder injection assembly, and powder is spirally injected into the storage container through the second powder injection opening. According to the technical scheme, the powder injection system can improve the powder injection efficiency and the powder injection precision at the same time.

The invention relates to the technical field of composite material laser welding, in particular to a SiC particle reinforced aluminum-based composite material laser welding performance optimization method which comprises the steps that a SiCp / A1-based composite material welding seam is obtained through a laser welding system under inert gas protection; in the welding process, powder for inhibiting interface reaction is added to the front portion of a laser beam, SiC powder is added to the rear portion of the laser beam, and SiC particles are introduced in the weld metal solidification process; swing laser is introduced to stir a molten pool, a high-speed electromagnetic valve type spray head is used for controlling on-off of SiC powder carrying airflow to achieve pulse type spraying powder adding, and the SiC powder airflow is introduced into a low-temperature area on the rear portion of the molten pool within the 1 / 2 period, located at the front edge of the molten pool, of the swing laser beam. According to the method, the interface reaction between the SiC particles and the Al matrix can be effectively inhibited, and the enhancement effect of the SiC powder on the mechanical property of the welding seam is improved.

The utility model relates to a steam sterilization device for penicillin powder injection production, which comprises a steam generator and a sterilization tank which are arranged on a bottom plate, the sterilization tank is transversely arranged, one side of the sterilization tank is fixedly communicated with an air inlet pipe, the air outlet end of the steam generator is fixedly communicated with the air inlet pipe, and the other side of the sterilization tank is hinged with a tank cover. A plurality of transversely-arranged sliding rails are fixedly connected into the sterilization tank, sliding rods are slidably connected into the sliding rails correspondingly, two annular assemblies are fixed to the sliding rods and located at the two ends of the sliding rods correspondingly, a rotating shaft is coaxially and rotationally connected between the two annular assemblies, and rotating discs are fixedly connected to the two ends of the rotating shaft correspondingly. High-temperature and high-pressure steam is injected into the sterilization tank through the steam generator, so that steam sterilization of the penicillin bottles in the sterilization tank is facilitated, the penicillin bottles are convenient to place and tidy, scattered placement of the penicillin bottles is avoided, and a better sterilization effect is achieved.

The utility model relates to blast furnace pig iron field, concretely is a kind of blast furnace pulverized coal injection pressure relief system.A kind of blast furnace pulverized coal injection pressure relief system, including injection tank (1) and coal powder bin (2), coal powder bin (2) is located in the side of injection tank (1), still include first pressure relief branch pipe (31), second pressure relief branch pipe (32), bypass pipe (33), main pressure relief pipeline (34), pressure relief cut-off valve (41), regulating valve (42), big pressure relief valve (43), micro pressure relief valve (44), pressure sensor (5) and controller (6), the air inlet of first pressure relief branch pipe (31) is connected the top 1# gas delivery end of injection tank (1), pressure relief cut-off valve (41) and regulating valve (42) are sequentially connected on first pressure relief branch pipe (31), big pressure relief valve (43) is connected in parallel by bypass pipe (33) and regulating valve (42);The air inlet of second pressure relief branch pipe (32) is connected the top 2# gas delivery end of injection tank (1), micro pressure relief valve (44) is connected on second pressure relief branch pipe (32).The utility model is high in efficiency, long in life, protects environment.

The present application relates to the pile forming technical field, especially to a kind of pile forming cement powder pipe control method and device.The method comprises: obtaining the real-time construction parameter, real-time environmental parameter and real-time control parameter of cement powder;Based on real-time construction parameter and real-time environmental parameter, determine the deviation comprehensive influence index;Wherein, deviation comprehensive influence index is used to quantify the influence degree of real-time construction parameter and real-time environmental parameter on pile quality;When deviation comprehensive influence index is greater than the first preset value, real-time control parameter and deviation comprehensive influence index are substituted into the preset target function to obtain the optimized control parameter;Wherein, the optimized control parameter includes the optimized cement powder supply, the optimized cement powder injection angle and the optimized cement powder mixing ratio;Based on the optimized control parameter, control cement powder spraying machine.In this way, the present application can ensure the premise of cement powder supply, so that cement powder is more evenly distributed.

The invention discloses an atosiban preparation and a preparation method thereof. The preparation comprises 20-50 parts of a freeze-drying protective agent, 0.1-1 part of a surfactant, 5-8 parts of atosiban acetate and 1-3 parts of a pH regulator, wherein the total amount of the components is 1000 parts by adding water for injection. After the solution is prepared, freeze drying is carried out, and the freeze drying comprises pre-freezing, annealing, primary drying and secondary drying. The freeze-dried powder injection disclosed by the invention overcomes the problems of poor stability and the like of a solution type injection, has the stability and the safety remarkably superior to those of a commercially available injection solution type product, can be stored at room temperature, and greatly reduces the cost of the product in the transportation and storage processes.