1202results about "Granulation by liquid drop formation" patented technology

The invention provides methods for the preparation of particles including one or more agents, e.g., therapeutic or diagnostic agents. The particles can be formed by creating droplets of a first liquid, e.g., including an agent, and removing the first liquid, e.g., through its dispersal in a second liquid and / or evaporation, to solidify the droplets. Advantageously, the process of forming the particles does not significantly alter the structure or activity of the agents and may enhance the stability of the agents. For example, the particles may be stored for long periods of time without significant loss of activity, and in some embodiments, without the need for refrigeration. These particles may be used to generate stabilized pharmaceutical compositions for storage or other logistical purposes, pharmaceutical suspensions, pharmaceutical powder formulations (e.g., inhalable powders, injectable powders), creams or other topical pastes, nutraceuticals, or cosmetics.

The invention provides methods for the preparation of particles including one or more agents, e.g., therapeutic or diagnostic agents. The particles can be formed by creating droplets of a first liquid, e.g., including an agent, and removing the first liquid, e.g., through its dispersal in a second liquid and / or evaporation, to solidify the droplets. Advantageously, the process of forming the particles does not significantly alter the structure or activity of the agents and may enhance the stability of the agents. For example, the particles may be stored for long periods of time without significant loss of activity, and in some embodiments, without the need for refrigeration. These particles may be used to generate stabilized pharmaceutical compositions for storage or other logistical purposes, pharmaceutical suspensions, pharmaceutical powder formulations (e.g., inhalable powders, injectable powders), creams or other topical pastes, nutraceuticals, or cosmetics.

The present invention belongs to the field of microbead preparation technology, and specifically relates to a microbead production process with adjustable internal phase based on microfluidic technology and its application. The microbead production process includes the following steps: (1) raw material transportation: the required materials are transported to the microfluidic chip separately through a pump under heat preservation conditions; (2) logistics shearing: the required materials are sheared in the microfluidic chip to obtain composite droplets; (3) cooling and molding: after the sheared droplets are cooled, they are cooled and solidified using a cooling medium to form microbead particles; (4) product collection: the microbead particles and the cooling medium are subjected to solid-liquid separation, filtered, and collected to obtain microbeads. The microbead production process of the present invention can quickly realize the continuous production of double-layer microbeads, realize the precise regulation of the inner layer of the double-layer microbeads, and quickly and accurately control the particle size of the microbeads; at the same time, it can quickly realize the production conversion between single-layer microbeads and double-layer microbeads.

The invention discloses a fused salt melting granulation device and a granulation method, and belongs to the technical field of fused salt granulation devices.The fused salt melting granulation device comprises a tank body and a cooling tower arranged on one side of the tank body, a pump body is connected between the tank body and the cooling tower, a rotating shaft is rotationally installed in the tank body, a plurality of clamping rings are rotationally arranged on the rotating shaft in a sleeving mode, and the clamping rings are connected with the pump body. A stirring rod is fixedly arranged on the peripheral surface of the outer side of the clamping ring; according to the device, raw materials can be added into the tank body in the process that the pump body pumps the liquid raw materials, heat in the tank body can be fully utilized, after the cover plate and the baffle pass through the stirring rod, the stirring rod can reversely rotate along with the rotating shaft, then the raw materials on the cover plate are mixed, and the stirring efficiency is improved. And the stirring rod below the cover plate cannot synchronously rotate along with the rotating shaft, so that the stability of the liquid raw materials in the tank body can be maintained, and the pump body can extract the liquid raw materials more stably.

The invention belongs to the technical field of microbead preparation, and particularly relates to a microbead production process with an adjustable internal phase based on a microfluidic technology and application of the microbead production process. The micro-bead production process comprises the following steps: (1) conveying raw materials: respectively conveying required materials to a micro-fluidic chip through a pump under a heat preservation condition; (2) material flow shearing: shearing the required material in the micro-fluidic chip to obtain composite liquid drops; (3) cooling and forming: cooling and curing the sheared liquid drops by using a cooling medium after the sheared liquid drops are cooled, so as to form microbead particles; and (4) product collection: carrying out solid-liquid separation on the microbead particles and a cooling medium, filtering, and collecting to obtain the microbeads. According to the microbead production process disclosed by the invention, continuous production of double-layer microbeads can be quickly realized, accurate regulation and control of inner layers of the double-layer microbeads are realized, and the particle sizes of the microbeads are quickly and accurately controlled; and meanwhile, the production conversion of single-layer microbeads and double-layer microbeads can be quickly realized.

The invention discloses a preparation method of aluminum nitride by spray granulation, which belongs to the technical field of ceramic preparation. The method comprises: adding aluminum nitride powder and a dispersant into a ball mill for ball milling for 24 to 26 hours, adding an adhesive and a solvent thereto, wherein the adhesive is acrylic resin or PVB, and continuing ball milling for 15 to 18 hours after the adhesive and the solvent are added, the ball milling speed of the ball mill is set to 100 to 200 rpm, the diameter of the ball milling beads is 20 to 50 mm, the number of the ball milling beads is 200 to 300, and aluminum nitride slurry is formed after ball milling; the aluminum nitride slurry is sucked into a granulation tower, and the parameters of the granulation tower are set to: an air inlet temperature of 130 to 140 DEG C, an air outlet temperature of 80 to 90 DEG C, a rotation speed of an atomizing disk of 7000 to 8000 rpm, and a feed pump rotation speed of 50 to 60 rpm; collecting samples at a discharge port of the granulation tower, and then testing the samples and recording the test results.

The invention discloses an energy-saving environment-friendly spray granulation tower for aluminum oxide ceramic material processing, which comprises a bottom plate, a mixing barrel is fixedly mounted at the upper end of the bottom plate, a heating pipe is spirally wound on the outer side of the mixing barrel, a stirring assembly is arranged in an inner cavity of the mixing barrel, a granulation tower box is arranged at the rear end of the mixing barrel, and the granulation tower box is arranged in the inner cavity of the mixing barrel. And the lower end of the granulation tower box is fixedly connected with a collection hopper. According to the energy-saving and environment-friendly spray granulation tower for aluminum oxide ceramic material processing, by starting a driving motor, the output end of the driving motor drives a first stirring shaft to rotate, the first stirring shaft rotates to drive a main cone pulley to rotate, the main cone pulley rotates to drive a transmission cone pulley to rotate, and then through cooperation of a driven cone pulley, the energy-saving and environment-friendly spray granulation tower is driven to rotate. The second stirring shaft can conveniently rotate reversely, so that the materials in the mixing barrel can be fully stirred by a plurality of groups of stirring rods, and the problem that the quality and the size of formed spherical particles do not reach the standard due to the fact that the materials are not uniformly mixed can be avoided.

The present invention provides an ammonia removal system for a urea granulation tower, which includes a hydrogen chloride gas spray head for spraying hydrogen chloride gas below the dust removal cloth bag of the urea granulation tower. During operation, on the one hand, the hydrogen chloride gas can act as a reactant to react with ammonia mixed in the air to form ammonium chloride, and the formed ammonium chloride is intercepted by the dust removal cloth bag, thereby achieving the purpose of ammonia removal; on the other hand, the hydrogen chloride gas can act as a catalyst to cause the tiny urea particles carried in the air to react with the moisture in the air under its catalytic action to form carbon dioxide and ammonia, thereby reducing the air humidity and solving the problem of the dust removal cloth bag being blocked. This ammonia removal system can not only achieve the purpose of ammonia removal, but also reduce the air humidity to solve the problem of the dust removal cloth bag being blocked, so it can be used in combination with the dust removal cloth bag.

The invention relates to a preparation method of a spherical adsorbent, and belongs to the field of chemical preparation. The invention discloses a preparation method of a spherical adsorbent. The preparation method comprises the following steps: dissolving a hydrophobic base material serving as a forming agent in a preheated organic solvent for mixing; after the forming agent is dissolved, a hydrophilic base material is mixed and dissolved in the organic solvent, and a binder is obtained through stirring; adding adsorbent powder into the binder, and stirring to obtain mixed slurry; and dropping the mixed slurry into a coagulating bath through a pill dropping machine to obtain spherical adsorbent particles. The adsorbent particles are simple in preparation process and high in powder coating rate, the stability of the spherical adsorbent is also remarkably improved, and the spherical adsorbent has certain anti-pollution performance and can be directly applied to extraction of lithium from complex original halide.

The invention discloses an autotrophic denitrification nitrogen removal filler suitable for sewage with a low carbon nitrogen ratio and a preparation method thereof. The filler is prepared from the following raw materials in percentage by weight: 40%-45% of sulphoaluminate cement, 8.5% of silica fume, 1.5% of modified sodium percarbonate, 16.8%-25.2% of sulfur powder, 16.8%-25.2% of pyrite powder and 3%-8% of calcium carbonate powder. Experimental results show that the autotrophic denitrification filler provided by the invention has an excellent denitrification effect on a sewage water body with a low carbon-nitrogen ratio, and can meet the technical requirements of deep denitrification treatment. In addition, the autotrophic denitrification nitrogen removal filler provided by the invention is simple in nitrogen removal process, free of fuel melting raw materials, capable of being applied to large-scale production and actual industrial application, rapid in microbial film formation, high in nitrogen removal efficiency, cheap and easily available in raw materials, simple in process and low in requirements on equipment / environment. Therefore, the method has wide development potential.

The utility model discloses a spray granulator, which belongs to the technical field of granulators, including a mixing box, wherein a motor 1 is fixedly connected to the bottom of the mixing box, and a rotating shaft is fixedly connected to the output end of the motor 1, and a plurality of stirring rods are fixedly connected to the outer wall of the rotating shaft, a feed pipe is fixedly connected to the top of the mixing box, and a water pump is fixedly connected to the top of the mixing box, and a delivery pipe is fixedly connected to the output end of the water pump, and an atomizing nozzle is arranged at the other end of the delivery pipe, and a drying chamber is arranged outside the mixing box, and a feeding mechanism is arranged between the drying chamber and the mixing box. The spray granulator described in the utility model achieves the effect of reusing unqualified particles in the screening process through the mutual cooperation among the screen, the discharge pipe, the housing, the motor 2, the rotating column, the dragon blade, the discharge pipe and the grinder, solves the problem that the traditional equipment needs to be manually loaded after the screening, which is time-consuming and labor-intensive, and greatly improves the work efficiency.

According to the mixed phase ice crystal particle ground generation and icing experiment device and method, a water spray head generates a water drop particle swarm, an ice crystal particle generation device generates an ice crystal particle swarm, the water drop particle swarm and the ice crystal particle swarm are mixed in a controllable proportion to form an ice-water mixed phase, and then a mixed phase icing experiment can be achieved. The experimental device comprises an air duct system, a water drop atomization generation system, an ice crystal particle generation system, an impact surface system and a measurement system, the air duct system comprises an axial flow fan, an air duct and an experiment cavity; the impact surface system comprises an impact surface assembly, the water drop atomization generation system and the ice crystal particle generation system are used for providing water drops and ice crystals respectively, the axial flow fan provides high-speed airflow, the water drops and the ice crystals are conveyed through the air duct to impact the impact surface assembly at a high speed, and an impact icing experiment of a mixed phase is achieved; the measuring system is used for measuring the air speed, temperature and humidity in the air duct and measuring the thickness and temperature of an ice layer of the impact surface assembly.

The invention provides a liquid drop continuous generation device which comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel comprise first positions which are tightly attached to each other, and each first position comprises a through hole communicating with the first flow channel and the second flow channel; the first flow channel and the second flow channel are used for introducing a first liquid and a second liquid respectively; the special ultrasonic device can act on the first liquid in the first flow channel, when the special ultrasonic device is driven in a first power period, an acoustic beam current facing the through hole is generated in the first liquid, the acoustic beam current enters the second liquid through the through hole, and liquid drops formed by the first liquid are formed in the second liquid. The invention also correspondingly provides a method for continuously generating liquid drops. The liquid drop generation mode is more flexible, the controllability is higher, and the cost is lower.

The utility model relates to the field of organic fertilizer production, in particular to an organic fertilizer spraying granulation device. The existing fertilizer granulation device has the problems that a sieve plate is easy to block and the discharging is not uniform, the granulation effect is influenced, and the granulation efficiency is reduced. The utility model discloses an organic fertilizer spraying granulation device which comprises a bottom frame, a granulation barrel, a breather pipe and the like, the bottom frame is fixedly connected with a granulation barrel, the upper part of the granulation barrel is fixedly connected with a ventilation pipe, the ventilation pipe is communicated with the granulation barrel, the bottom frame is fixedly connected with a motor, and one side, far away from the motor, of the granulation barrel is provided with a discharge port. The pressing rod rotates to drive the two cams to rotate, the cams rotate to intermittently push the push rod to move, the push rod reciprocates to drive the sieve plate to reciprocate, the sieve plate reciprocates to enable falling powder to form a material curtain, and the powder is shaken off into the granulation barrel, so that the uniformity of the powder entering the granulation barrel is improved, and the contact area of the powder and slurry is increased; therefore, the granulation quality is improved.

The invention provides a fluidized bed granulation process and device for online regulation and control of particle size and moisture of particles, and belongs to the technical field of fluidized bed granulation. The fluidized bed granulation process specifically comprises the following steps: firstly, presetting a material target particle size, a material control temperature and a minimum material temperature, adopting a four-stage granulation process, and realizing online regulation and control on the material particle size and moisture by controlling the air inlet volume and the air inlet temperature; the process is realized by installing an anemograph behind an air inlet valve on an air inlet pipe of an existing fluidized bed granulation drying device, installing a near-infrared probe on a material tank window and installing a temperature probe in the middle, the transformation difficulty is small, air volume and temperature control in the whole granulation process can be achieved, and online monitoring of the particle size and moisture of particles in the whole process can be achieved. The obtained products are small in batch difference and good in reproducibility, the stability of the product quality is further guaranteed, the purpose of saving energy can be achieved by monitoring the air inlet volume and the temperature, and the method is suitable for actual production.

Described herein are apparatuses and methods for conditioning particles. In some embodiments, the apparatuses and methods are configured for first-in-first-out transit of particles through a chamber containing a conditioning fluid. In some embodiments, the apparatuses and methods of the present disclosure enable the manufacture of particle preparations containing large quantities of particles (e.g., cell-containing particles) with more consistent and improved properties relative to alternative manual processes.

The tower-type compound fertilizer production efficient granulation device comprises a tower body, separation seats are symmetrically installed on the inner wall of the tower body, a plurality of separation pipes are installed at the position, located between the two separation seats, in the tower body in the circumferential direction at equal angles, and piston boxes are symmetrically installed on the end face of one side of the tower body; a rotational flow box is installed in the middle of the side end face of the piston box, a movable piston is slidably installed in the piston box, and a rotating wheel is rotatably installed in the rotational flow box. Driving force comes from slurry heat and heat in air, limitation of external energy to the device can be effectively avoided, the device can operate more efficiently and stably, and the device is more stable in operation. The device is more energy-saving and environment-friendly, the processing cost of the compound fertilizer is reduced, the heat carried by the slurry is actively extracted through gas-liquid conversion, the influence of external solar terms and regions on the device is effectively avoided while the heat exchange efficiency is improved, and the device can perform granulation processing more freely and stably.

Disclosed in the present invention is a preparation method for a water treatment agent produced from red mud of an aluminum factory, comprising: first, dealkalizing red mud slurry by means of a filter pressing process; then drying same and crushing same into powder; adding to a stirring tank the dry red mud powder to be heated and dissolved, and adding an excess of hydrochloric acid to obtain a chlorine salt material; then adding alkali to the chlorine salt material to adjust the pH value to weak acid; and finally spray-drying the water treatment agent to obtain a powdery preparation. The water treatment agent prepared in the present invention has excellent effects of flocculation and COD and ammonia nitrogen removal, and can effectively solve the problem that red mud waste residues stacked in aluminum factories cause environment pollution.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium nickel cobalt aluminate / carbon composite positive electrode material with a core-shell structure and a spray drying process thereof, the lithium nickel cobalt aluminate / carbon composite positive electrode material comprises the following raw materials: a lithium source, an iron source, a phosphorus source, a carbon source and a solvent; the method specifically comprises the following steps: S1, dissolving a lithium source, an iron source, a phosphorus source and a carbon source in a solvent, mixing according to a stoichiometric ratio, adjusting the pH value by using ammonia water or citric acid, and adding a binder to adjust the viscosity to obtain a precursor solution; s2, atomizing the precursor solution into tiny liquid drops by a centrifugal or pressure type spray dryer through a nozzle or a centrifugal disc, and staying the liquid drops in a tower for 4-10 seconds to obtain a dried microsphere precursor; s3, presintering the dried microsphere precursor in an inert atmosphere at 300-400 DEG C through a firing device, and removing volatile components; and S4, cooling the pre-sintered and dried microsphere precursor, and calcining in the firing device again to form crystals.

The invention discloses a multistage intelligent adjustable rotational flow atomization granulation system and device, and belongs to the technical field of atomization granulation, the multistage intelligent adjustable rotational flow atomization granulation system comprises a first end cover and a second end cover, a roller is arranged between the first end cover and the second end cover, and spiral conveying blades are arranged on the inner wall of the roller; the mixing head is fixed to the first end cover, a mixing chamber is arranged in the mixing head, and multiple first spraying holes are circumferentially distributed in the end face; the liquid conveying pipe extends to the material mixing chamber along the axis of the gas conveying pipe, a plurality of nozzles are arranged at the tail end of the liquid conveying pipe, and the spraying direction of the nozzles is perpendicular to the gas conveying direction of the gas conveying pipe; and the sleeve is sleeved with the infusion tube and is provided with a spiral guide vane, so that the airflow is accelerated into a high-speed spiral shape in the contraction channel. Feed liquid and air flow are vertically collided and sheared, so that the turbulence mixing strength is enhanced, and the atomization uniformity is improved; the adjusting assembly switches the nozzles of different specifications through the rotating shell, and multi-stage crushing particle size adjustment is achieved.

The invention relates to the technical field of high polymer materials, and particularly discloses a production process of spherical wax micropowder, which comprises the following steps: melting solid wax into a wax melt, and preserving at a constant temperature in an environment which is at least 20 DEG C higher than the melting point of the wax; the wax melt and hot water are mixed according to the flow ratio of 1: (10-20) and then sprayed out to form mist spray, the mist spray enters mist spray pool water with the temperature of the wax melting point + / -5 DEG C, and wax liquid drops in the mist spray are subjected to condensation polymerization in the mist spray pool water to form spherical wax melt; the spherical wax melt gradually rises into cooling water flow in the water of the spraying pool, the temperature of the cooling water flow is 10-20 DEG C lower than the wax melting point, the spherical wax melt flows in the cooling water flow and is cooled, the spherical wax melt is separated from the cooling water flow, and dewatering and drying are conducted to obtain the spherical wax micro powder. The process can improve the sphericity and particle size uniformity of the wax micro powder.

The utility model provides a sodium ion battery positive electrode material processing device, and belongs to the technical field of motor active material manufacturing. Comprising a dispersing tank, a cavity and a material collecting bin, the dispersing tank is connected with a material conveying pipe, a spray head is arranged at the tail end of the material conveying pipe and located in the cavity, the cavity is connected with a vacuumizing pipe, a crawler belt is arranged below the spray head, a heating plate and a cooling plate are arranged in a crawler belt loop, the heating plate is located in the crawler belt loop, and the cooling plate is arranged close to the tail end of the crawler belt. The outlet of the cavity is connected with a collecting bin. The device is used for raw material treatment of the battery positive electrode material, and has the advantages of high stability, uniform heating, stable material performance, capability of realizing an atomization granulation effect, easiness in industrialization and the like.

The invention relates to a sprayer, a spray drying system and a control method thereof, and the sprayer comprises a main body which is provided with a material channel and an atomization channel, and the atomization channel is used for conveying a medium, so that the medium impacts a material at an outlet of the material channel and atomizes the material for at least two times; the spray head is arranged at the discharge end of the main body and is respectively communicated with the material channel and the atomization channel; the spray head comprises an atomizing part, the atomizing part comprises a liquid guide pipe, a flow guide part and a spray piece, and the spray piece is arranged at an outlet of the liquid guide pipe; the flow guide part is used for rotating and accelerating materials in the first rotating direction, a spraying hole communicating with the material channel is formed in the spraying piece in a penetrating mode, and the hole diameter of the spraying hole is smaller than that of an outlet of the liquid guide pipe. Under the action of the material channel and the atomization channel, the material can be cut for multiple times through the medium, the particle size formed by final atomization of the material can be better controlled, and atomized material particles have smaller particle size.

The invention relates to the technical field of atomizer equipment, and discloses a micron-sized solid ceramic powder spray granulator which comprises a base support, a drying tower body is fixedly mounted at the top end of the base support, an output pipeline is fixedly mounted at the bottom end of the drying tower body, and a mounting support is arranged at the top end of the drying tower body. And an atomizer is fixedly mounted in the mounting bracket. According to the micron-sized solid ceramic powder spray granulator, an atomizer and a structure on the atomizer are arranged, when the atomizer does not act, along with the loss of gas in an inner cavity of an inner runner pipe, under the elastic force action of a second elastic piece, a linkage sleeve piece is forced to move downwards, and pressure is applied to the side face of an elastic ring again; the inner runner pipe is driven to move upwards to extrude the third elastic piece, and meanwhile, the outer surface of the inner runner pipe and the inner wall of the outer runner pipe are attached to each other to extrude out the liquid material remaining in the inner runner pipe.

The invention relates to the technical field of ceramic product production and manufacturing equipment and a preparation process, in particular to a spray granulation process which comprises the following steps: preparing zirconium oxide slurry with the solid content of 90%, conveying the zirconium oxide slurry to a nozzle through a pipeline, and enabling the slurry to meet airflow at the nozzle and be atomized into tiny liquid drops; atomized liquid drops make contact with hot airflow for drying, the airflow temperature is controlled by a temperature control system to gradually rise from the inlet section to the outlet section of the main tower, and an airflow system adjusts the airflow speed and the airflow direction; the particles with the particle size larger than or equal to 40 micrometers fall to a discharging port in the bottom of the main tower under the action of strong airflow, and the particle size is lt; particles with the particle size of 40 microns flow to a brown air opening under the action of relatively weak air flow; the dried large particles are guided out from a discharge hole in the bottom of the main tower through a strong airflow regulator to be collected, and the dried small particles are collected through a connecting pipeline and a cyclone separator through an air inlet; the large particles are directly stored or subsequently processed, and the small particles are further processed or sub-packaged. Precise classified collection is achieved, and the granulation quality and the production efficiency are improved.

The silicon carbide micro-powder anti-agglomeration treatment device comprises a tower body, a stirring cavity, an isolation bin and a spray drying cavity, the stirring cavity, the isolation bin and the spray drying cavity are sequentially arranged in the axis direction of the tower body, and the stirring cavity communicates with the spray drying cavity through a flow guide cavity penetrating through the isolation bin; the stirring device is arranged in the stirring cavity and comprises a driving motor arranged at the top of the tower; the rotating shaft is connected with a driving motor through a coupler, penetrates through the stirring cavity and the flow guide cavity and extends to the spray drying cavity; the stirring assembly is connected with the rotating shaft; the centrifugal spraying device is connected with the end of the rotating shaft. The stirring device and the spray drying tower are integrated, the rotating shaft is driven by the driving motor to rotate, the part, in the stirring cavity, of the rotating shaft is provided with the stirring blades, the part, extending into the spray drying cavity, of the rotating shaft is provided with the centrifugal spraying device, the rotating shaft is driven by the driving motor to rotate, and stirring and centrifugal spraying can be achieved at the same time; the problem that high-solid-content slurry is difficult to convey in the prior art is solved.

The utility model discloses a diammonium phosphate granulating and drying system which comprises a grid plate, a grid plate is horizontally fixed at the lower part of the granulator, and a plurality of strip-shaped holes which are parallel to one another are formed in the grid plate; a plurality of sliding grooves are formed in the inner wall of the tail of the drying machine in the axial direction, a crushing base plate is inserted into each sliding groove in a sliding mode, the crushing base plates are fixedly connected with the drying machine through penetrating screws, and a plurality of crushing teeth are vertically fixed to the crushing base plates. The device has the advantages that caked materials granulated by the granulator are intercepted on the grid plate, and part of the caked materials are pushed out from the discharge door by the material pushing plate, so that the caked materials are cleaned; after the materials are dried by the drying machine, the materials are thrown up by the material raising plate and fall on the crushing teeth on the crushing base plate under the action of gravity, so that the primary crushing effect on the dried caked materials is achieved, the caked materials generated in the granulation process can be effectively crushed, and the normal production efficiency and the production quality are prevented from being influenced by material blockage.

The invention relates to the technical field of ceramic microspheres, in particular to a ceramic microsphere preparation method based on microflow regulation and control, which comprises the following steps: step 1, preparing raw material colloid for forming ceramic microspheres; step 2, putting the raw material colloid into a container, wherein the container is connected with a micro-flow dripping nozzle; 3, the extrusion amount of a micro-flow dripping nozzle is adjusted and controlled according to the size of the needed microspheres, a cylinder body containing oil is arranged, the micro-flow dripping nozzle is located above the cylinder body and is a certain distance away from the cylinder body, the extruded raw material colloid is dripped into the oil liquid in a free falling mode, the density of the selected oil liquid is smaller than that of the raw material colloid, and the micro-flow dripping nozzle is arranged in the cylinder body; enabling the raw material colloid dripped into the oil liquid to gradually descend in the oil liquid and form microspheres, and irradiating the raw material colloid with ultraviolet light to form a microsphere-shaped area in which the microspheres gradually descend, so as to obtain a ceramic microsphere prepolymer; 4, the ceramic microsphere prepolymer is degreased and sintered, and the ceramic microspheres are obtained.By means of the method, the ceramic microspheres uniform in size can be accurately, rapidly and flexibly produced, and the method has the advantage of being easy to operate.

The invention relates to the technical field of chemical production, and discloses a continuous production process and a production system of paraformaldehyde. The continuous production process of the paraformaldehyde comprises the following steps: feeding a low-concentration formaldehyde aqueous solution into a formaldehyde concentration tower for reduced-pressure flash evaporation to obtain a high-concentration formaldehyde aqueous solution; pumping the obtained high-concentration formaldehyde aqueous solution into a spray granulation tower for spray granulation to prepare a paraformaldehyde material; and feeding the obtained paraformaldehyde material into a fluidized bed dryer for fluidized drying to obtain a paraformaldehyde product. By adopting a specific combination mode of flash evaporation, spray drying and fluidized drying, the polymerization degree of the prepared paraformaldehyde product is 9-11, and the purity can reach 92-96 wt%. And in cooperation with heat preservation and flow rate control, the polymerization problem caused by too high local concentration of formaldehyde can be effectively avoided, and the continuous production mode can be well met.

The utility model relates to the technical field of granular medicament production, in particular to a slurry feeding mechanism for granular medicament production, which comprises a bracket, a raw material pool arranged below the bracket, a raw material barrel arranged at the upper position of the bracket, a lifting structure connected with the bracket, and a material pouring barrel connected with the lifting structure, and the material pouring barrel is connected with a material pouring structure for controlling the material pouring barrel to pour the raw materials into the raw material barrel, so that the effect that the raw materials in the raw material barrel are more convenient to add is achieved.