153results about "Fusion" patented technology

The invention discloses a molten salt system and a control method of the molten salt system, and the molten salt system comprises a preheating system which comprises a molten salt tank and a preheating device; the salt dissolving system comprises a salt dissolving tank, an induced draft fan, a first gas conveying pipeline and a first exhaust pipeline; one end of the first gas conveying pipeline is connected with a steam-water side outlet of the molten salt tank, the other end is connected with an air inlet of the salt dissolving tank, and the first gas conveying pipeline is used for conveying hot air generated by preheating the molten salt tank by the preheating device to the salt dissolving tank; the other end of the first exhaust pipeline is connected with an air outlet of the salt dissolving tank; the induced draft fan is used for controlling the flowing speed of the hot air from the molten salt tank to the salt dissolving tank so as to reduce heat loss when the hot air flows in the first air conveying pipeline. Preheating waste heat of the molten salt tank is directionally conveyed to the salt dissolving tank through the first gas conveying pipeline, solid molten salt is melted through hot air waste heat, and heat energy circulation is achieved. The hot air flow speed is controlled through the exhaust fan, and the retention time of hot air in the pipeline is shortened so as to reduce the heat loss of the hot air.

The invention relates to the technical field of turpentine processing, in particular to a turpentine continuous melting and clarifying processing device and method.The turpentine raw material is put into a feeding cylinder, piled in an inclined scattering cylinder, subjected to axial autorotation along with the feeding cylinder, discharged downwards and distributed in all areas in a dissolving tank, and after dissolving is completed, the turpentine raw material is poured into the feeding cylinder to be subjected to continuous melting and clarifying processing. When the telescopic part drives the sieve plate to move upwards until the bottom end of the movable cylinder abuts against the sieve plate, the sieve plate axially rotates along with the feeding cylinder and drives the movable cylinder to axially rotate, so that the material leakage port and the material scattering port are staggered, the movable cylinder rolls solid matters in the circumferential direction of the sieve plate, and the resin liquid is discharged into the clarifying tank along the liquid leakage pipe while slag is discharged from the slag outlet; after grease water in the clarification tank is layered, most of the water layer is discharged, the grease water is put into the feeding cylinder for circular treatment, and the steam injection system and the emptying pipe in the clarification tank are opened for distillation treatment, so that the continuous processing efficiency is further improved.

The invention discloses test equipment and a test method for interaction of a melt and a nuclear power special material. The test equipment comprises a smelting chamber, a smelting container assembly, an electromagnetic and shielding control system, a gas control system, a temperature measurement system and a remote operation system, the smelting container assembly is located in the smelting chamber, the smelting container assembly is used for containing test materials including melts and nuclear power special materials, and at least part of the electromagnetic and shielding control system is located in the smelting chamber and wraps the outer side of the smelting container assembly so as to conduct electromagnetic induction heating on the melts; nuclear power special materials are shielded from electromagnetic interference; the gas control system is used for providing a gas environment for the interior of the smelting container assembly and extracting gas for filtering, discharging, collecting or analyzing, the temperature measuring system is used for measuring the temperature in the molten pool and the temperature of the nuclear power special material, and the remote operation system is used for remotely controlling the test equipment to complete test operation.

The invention belongs to the technical field of semiconductor material preparation, and particularly relates to a crucible assembly for synthesizing silicon carbide powder and a synthesis method of the crucible assembly. The crucible assembly comprises an outer crucible, a charging crucible and a supporting ring. The outer crucible is made of isostatic graphite, the side wall of the inner cavity is provided with a gas guide groove, and the bottom and top crucible covers are provided with vent holes; the charging crucible is made of porous graphite and is accommodated in the outer crucible; the support ring is arranged between the two, and the support surface is provided with a groove. Through the synergistic effect of the bottom vent hole, the supporting ring groove, the outer crucible side wall gas guide groove and the top vent hole, a gas channel of bottom gas inlet, side wall flow guide and top gas exhaust is formed. Impurities such as nitrogen adsorbed by the raw materials can be forcibly discharged, and the nitrogen content of the powder is effectively reduced; and meanwhile, excessive heat on the side wall and the bottom of the crucible is taken away through gas flow, the uniformity of a synthetic thermal field is remarkably improved, local excessive carbonization of the powder is avoided, and therefore the purity and consistency of the silicon carbide powder are synchronously improved.

A process and an apparatus for silicon carbide production includes steps of producing a mixture having at least a carbon powder and a silica powder where the percentage by weight of carbon powder with respect to the total weight of the mixture, is at least about 25%; placing the mixture in a crucible; creating a substantially inert atmosphere in an area at least partially surrounding the crucible; heating up the crucible by a heating device for a first time interval until reaching a working temperature of at least 1.500° C. and lower than a melting temperature of the silica powder in the mixture; maintaining the crucible within a working temperature range between 1.500° C. and the melting temperature of the silica powder in the mixture for a second time interval; and reducing the temperature of the crucible after the second time interval.

The invention belongs to the technical field of waste plastic recovery, and discloses a waste plastic film-forming thermal cracking device and method.The waste plastic film-forming thermal cracking device comprises a pre-treatment assembly, a film-forming thermal cracking assembly and a post-treatment assembly which are sequentially communicated; the film-forming cracking assembly comprises a melting module communicated with the pretreatment assembly, and the melting module is communicated with a cracking module used for cracking plastic through a cleaning module; the cracking module comprises a cracking cylinder, a material distribution pipe is rotationally connected into the cracking cylinder, the outer wall of the material distribution pipe communicates with a plurality of spirally arranged flow distribution pipes, and the flow distribution pipes smear molten waste plastics on the inner wall of the cracking cylinder through smearing heads; a spiral scraping and washing plate is arranged on the shunting pipe, the shunting pipe and the scraping and washing plate are arranged in a staggered manner, and the scraping and washing plate is in sliding contact with the inner wall of the cracking cylinder. Modular design is adopted, through cooperative work of all the assemblies, waste plastic treatment can be continuously conducted, the device has the advantages of being high in efficiency, low in energy consumption and long in period operation, equipment faults are reduced, and the device is suitable for recycling of mixed waste plastic.

The invention relates to the technical field of manufacturing of fusible polytetrafluoroethylene resin, in particular to a method for treating an unstable terminal group of fusible polytetrafluoroethylene, which is used for solving the problem that the unstable terminal group cannot be thoroughly treated in the prior art. The method comprises the following steps: heating fusible polytetrafluoroethylene resin to a molten state, after self-reaction, introducing high-purity fluorine-nitrogen mixed gas to carry out fluoridation reaction, and extracting impurities generated by the reaction to obtain unstable soluble polytetrafluoroethylene resin with a treated terminal group; according to the method, soluble polytetrafluoroethylene resin is heated to a molten state, and unstable terminal groups are thoroughly treated through self-reaction and fluorination reaction.

The invention relates to the technical field of vitamin production, in particular to high-efficiency vitamin production equipment which comprises a bottom plate, a crusher mounted on the bottom plate, an emulsifying tank and a control console fixedly connected to the bottom plate, a suction device assembled on the bottom plate, and a melting device assembled below the suction device. Through cooperation of structures such as the nitrogen generator and the nitrogen tank, the absorption pipe performs directional absorption on crushed materials, so that the materials are driven to flow in a closed environment and are fed into the storage tank connected with the output end of the nitrogen generator, and the materials in the storage tank are discharged through the discharge pipe mounted on one side; the tail end of the discharging pipe is connected with a first corrugated pipe, the first corrugated pipe is flexibly connected to a feeding port of the melting tank, continuous conveying of powder from the suction device to the melting device is achieved, the whole process is completed under nitrogen protection, and oxidation reaction, moisture absorption deterioration or leakage pollution of the powder in the conveying process are avoided; the stability and the transfer efficiency of the vitamin raw materials are improved.

The invention relates to the technical field of polyester material production, and discloses a polymerization method and system for producing chinlon 6 slices, and the provided chinlon 6 slices have the advantages of higher relative viscosity, narrower molecular weight distribution, lower water content, and higher yield. According to the system used by the invention, a ZnO / Al2O3 composite variable active catalyst adding window is directly arranged at the bottom of the melting and mixing unit 1, so that the ZnO / Al2O3 composite variable active catalyst can be ensured to be more uniformly dispersed in the whole reaction system, the reaction conditions are optimized, the variable active catalyst is adopted, the pH is dynamically regulated and controlled, and the reaction efficiency is improved. The exposure degree of active sites of the catalyst can be accurately adjusted according to the requirements of different stages of a polymerization reaction, generation of cyclic dimers in the caprolactam hydrolysis ring-opening process is effectively inhibited in the pre-polymerization stage, the content of cyclic by-products is remarkably reduced to 3.5% or below, the monomer utilization rate is increased, increase of the molecular weight is promoted in the post-polymerization stage, and the yield of the catalyst is increased. And product quality.

The invention provides a method for preparing a composite catalyst by recovering an ITO waste target and the composite catalyst. The preparation method comprises the following steps: mixing an ITO waste target with sulfur, heating to 300-430 DEG C in an inert atmosphere, carrying out a vulcanization reaction, and cooling to room temperature after the reaction is finished, so as to obtain the In2S3 / In4SnS8 / In2O3 composite catalyst. The composite catalyst is composed of In2S3, In4SnS8 and In2O3, and is an In2S3 / In4SnS8 / In2O3 composite catalyst with a heterojunction structure. Compared with a traditional ITO waste target recovery technology, the method for recycling the waste into the indium sulfide-based catalytic material through one step of vulcanization has the advantages that valuable elements indium and tin in the waste target are recovered in the form of a catalyst material, tin loss of a wet process is avoided, and the problems that a pyrogenic process is high in temperature, low in cost and the like are solved. And the product still needs to be further processed.

The present invention belongs to the technical field of electric arc additive manufacturing, and in particular to an oscillating electric arc additive manufacturing printing device. In view of the problem in the prior art that, during the printing process, the device cannot be adjusted according to the printed shape, and cannot protect the gas, which will cause the molten pool to oxidize, thereby affecting the printing effect, the following scheme is proposed, which includes a printing body and an E frame respectively arranged on the top of the printing body and four supporting legs at the bottom; a support plate, fixedly installed on one side of the E frame, and an installation box, slidably installed on the top of the E frame; a moving mechanism, arranged inside the E frame, for moving the installation box; an adjusting mechanism, arranged on the front side of the printing body; a stirring mechanism, arranged on the top of the support plate; a melting mechanism, arranged on the top of the support plate, for melting metal. During the printing process, the present invention can adapt to different shapes for printing, and can protect the gas to prevent the molten pool from oxidizing, thereby improving the printing effect.

The invention discloses a method and a system for separating and recovering phosphorus and iron in a phosphorus-containing iron compound, and relates to the technical field of solid waste utilization. The method comprises the following steps: obtaining a crushed phosphorus-containing iron compound and a solid alkaline substance; the crushed ferrophosphorus-containing compound and the crushed solid alkaline substance are taken and placed in a reaction furnace, the ferrophosphorus-containing compound and the solid alkaline substance are fused and react to obtain a first mixed material, and the dosage of the solid alkaline substance is 1-1.2 times of the theoretical molar dosage; adding water into the first mixed material for leaching to obtain a first solid-liquid mixture, and performing solid-liquid separation on the first solid-liquid mixture to obtain a first filter cake and first filtrate; washing and drying the first filter cake to obtain a ferric oxide product; evaporating, concentrating, crystallizing and drying the first filtrate to obtain a phosphate finished product. The method provided by the invention has the advantages of environmental protection and high product quality.

The invention relates to the technical field of purification, in particular to vacuum distillation zone smelting purification equipment for deeply removing high-purity tellurium impurities and a production process. The vacuum distillation zone smelting purification equipment comprises a purification tank cover and a purification tank body; a movable bracket is arranged in the purification tank body; an induction line group is fixedly mounted on the movable bracket; a raw material cylinder is arranged in the purification tank body; a clamping mechanism and a turnover mechanism are arranged on the mounting plate; the clamping mechanism can clamp the raw material barrel; a reciprocating heating mechanism is arranged in the purification tank body and can drive the movable bracket to do reciprocating translation so as to drive the induction line group to move along the length direction of the raw material barrel; when the induction line group moves to the tail end of the stroke, the turnover mechanism can drive the turnover raw material barrel; through mutual cooperation of the reciprocating heating mechanism and the turnover mechanism, the process of heating mineral aggregate by the induction line group is relatively continuous (the interval time is short), impurities are gathered on one side of the raw material cylinder, and the product loss can be effectively reduced, so that the purification efficiency is indirectly improved.

A semiconductor phosphide injection synthesis system and a control method are provided, which belong to the technical field of preparation of semiconductor phosphides. The semiconductor phosphide injection synthesis system includes a furnace body, a shielding carrier box arranged above the furnace body by virtue of a lifting mechanism, a phosphorus source carrier arranged in the shielding carrier box, an injection pipe arranged below the phosphorus source carrier, and a crucible arranged at an inner bottom of the furnace body in a matched manner. The phosphorus source carrier includes a phosphorus source carrier main body, a phosphorus source carrier upper cover, a heating element base arranged at an inner bottom of the phosphorus source carrier main body, and a heating element arranged on the heating element base; a heat insulation layer is wrapped on an outer wall of the phosphorus source carrier; and an induction coil is arranged between the heat insulation layer and an inner wall of the shielding carrier box. By improving a device and method, the system stability can be improved, and an entire synthesis system achieves quantitative synthesis, which lowers the risk of explosion of the phosphorus source carrier.

The present invention provides a device and method for rapid liquefaction and high-temperature atomization decomposition of nitrate crystals, comprising a high-temperature atomization module and a liquefaction module. A relatively short microwave heating spiral feeding device is used to achieve rapid liquefaction. The liquefaction module is connected to the high-temperature atomization module so that the nitrate crystals pass through the liquefaction module and then pass through the high-temperature atomization module to be directly heated by flame for high-temperature pyrolysis. The liquefaction module comprises a nitrate crystal storage tank, a heating device, a melting tank and a material pump. The bottom of the nitrate crystal storage tank is connected to the heating device, and one end of the heating device away from the nitrate crystal storage tank is connected to the melting tank. The bottom of the melting tank is connected to the material pump, which can continuously and rapidly liquefy the nitrate crystals and reduce the transportation failure of the high-temperature molten material. Moreover, due to the high temperature, the pyrolysis speed of the material is also fast, and NO in the pyrolysis gas is reduced. x High content.

A process and reactor for removing impurities from a carbon material, involving providing a carbon feed into the electrothermal reactor; providing a gas into the reactor; passing the carbon feed through the reactor in a direction; heating the carbon feed using one or more electrodes; volatizing non-carbon material of the feed with the heat; and discharging the purified carbon material at the second location. So purified, the carbon material may be battery-grade. The feed may be passed through the reactor in a generally horizontal direction. The velocity of the feed in the reactor may be controlled to achieve a select resident time sufficient to volatize a desired amount of impurity. The process and reactor may be configured to inhibit back-mixing of the feed.

The invention discloses a synthesis process for polyurethane rubber production, relates to the technical field of polyurethane rubbers, and aims to solve the technical problem of low synthesis efficiency of existing polyurethane rubbers. The method is realized based on a synthesis device, and the synthesis device comprises a rack, a fan, a heating mechanism, a transmission shell group and a synthesis mechanism are arranged on a rack, and a driving and adjusting mechanism drives a main rotating assembly, a driven rotating assembly, a fixed assembly, a switching assembly and a movable assembly to form a revolution state, so that the heating mechanism uniformly melts solid polyester polyol put into a reaction box group, and then solid isocyanate is added to uniformly melt the solid polyester polyol; and finally, the state of the movable assembly is adjusted through the driving and adjusting mechanism, so that the movable assembly forms a mixed state, the production period is greatly shortened, and compared with traditional batch production, the production efficiency can be further improved, and the requirement of the market for polyurethane rubber can be met.

The semiconductor phosphide injection synthesis system and control method belong to the technical field of semiconductor phosphide production, and include a furnace body, a shielded storage box installed above the furnace body by a lifting mechanism, a phosphorus source carrier installed in the shielded storage box, an injection tube installed below the phosphorus source carrier, and a crucible installed at the bottom of the furnace body, the phosphorus source carrier includes a phosphorus source carrier body and an upper cover of the phosphorus source carrier, a heating element seat installed at the bottom of the phosphorus source carrier body, and a heating element installed in the heating element seat, the outer wall of the phosphorus source carrier is wrapped in a heat insulating layer, and an induction coil is installed between the heat insulating layer and the inner wall of the shielded storage box. By improving the device and the method themselves, the stability of the system can be improved, quantitative synthesis in the synthesis system is possible, and the risk of phosphorus source carrier explosion is reduced.

The application discloses a high-boiling halogenated hydrocarbon dechlorination device in the technical field of waste lubricating oil treatment, which comprises a reaction tank, an oil inlet pipe and a reaction agent feeding pipe are connected to the reaction tank, a water washing mechanism is connected to the discharge port of the reaction tank, and a flash tower is connected to the water washing mechanism; a heating plate is arranged in the reaction agent feeding pipe; a through hole is formed in the heating plate; a guide rod is slidably arranged on the reaction tank; a blocking plate is arranged on the inner side end of the guide rod; an installation box is arranged on the reaction tank; the outer side end of the guide rod extends into the installation box and is connected with a pressing piece; a touch switch is arranged in the installation box; and the controller is electrically connected with the heating plate. In the application, when the dechlorination agent solidifies, the speed of the dechlorination agent entering the reaction tank is reduced, the blocking plate moves with the pressing piece to press the touch switch, the controller is driven to control the heating plate to work in the power-on mode, the temperature of the dechlorination agent is increased, and the dechlorination agent can fully contact with the distillate oil.

The invention relates to the technical field of production of chemical materials, and particularly discloses a production process and application of micron-level fatty glyceride fine powder, the production process comprises the following steps: heating and dissolving monoglyceride or triglyceride, fully stirring, conveying to a head tank through a pipeline, keeping the liquid level stable, conveying to a centrifugal spray head, and drying to obtain the micron-level fatty glyceride fine powder. And treating by a high-speed centrifugal rotor to form fine liquid drops, cooling into small particles by cold air input by an air cooler, cooling in a centrifugal drying tower to obtain an intermediate, standing, fully cooling, and sieving to obtain micron-grade fine powder. The invention also provides an application of the fine powder in an expanded polystyrene ultrafine powder coating agent, the coating agent is prepared from monoglyceride, triglyceride, zinc stearate, EBS ethylene bis stearamide and silicon dioxide in specific parts by mass, and the coating agent is produced by adopting a zero-gravity dry mixing method. The particle size of the produced fine powder reaches 75 micrometers or below, the particle size D50 of a finished product is about 50 micrometers, the fine powder can be evenly coated on EPS particles, powder falling is not prone to occurring, and the processing efficiency and the product performance of the EPS industry are improved.

The invention discloses a solid wax melting device which comprises a bottom plate, a supporting frame is installed on the top of the bottom plate, a melting furnace is installed on the supporting frame and comprises an inner tank and an outer tank, a rock wool heat insulation layer is installed between the inner tank and the outer tank, a furnace cover is installed on the top of the melting furnace, an auxiliary assembly is installed in the furnace cover, and a fixing frame is installed on the lower side of the interior of the inner tank. A conical base is installed at the bottom of the melting furnace, a silicon rubber heater is installed in the conical base, a heat preservation output head is installed at the output end of the bottom of the conical base, stand columns are installed on the four sides of the top of the bottom plate, a top plate is installed on the tops of the stand columns, and a lifting assembly is installed on the top plate. And the power output end of the lifting assembly is connected with the furnace cover.

The embodiment of the invention relates to the field of general methods or devices for granulating raw materials, in particular to material pretreatment equipment suitable for being used in a glove box. According to the material pretreatment equipment suitable for the interior of the glove box, provided by the embodiment of the invention, a powdery material is converted into a molten state through the material transfer device, and the material in the molten state is transferred to the granulation device, so that the material in the molten state is converted into a solid flaky material by the granulation device; the materials are converted from powder to a sheet shape, and transportation and follow-up treatment are facilitated; the powdery materials are exposed in the air in the feeding device, the stirring device and the material transferring device, and the granulating device and the transferring device are arranged in the glove box, so that the finally produced flaky materials can be prevented from being directly exposed in the air, and the materials can be conveniently isolated from operators; and the transfer device is arranged to communicate with the material outlet, so that an operator can conveniently collect and transfer the flaky materials.

The invention relates to the technical field of coal gas desulfurization and purification, in particular to an energy-saving sulfur melting device which comprises a heat exchange section, a standing section, a heating section and a sulfur discharging section which are sequentially connected, a clear liquid outlet is formed in the top of the heat exchange section, and a sulfur discharging opening is formed in the bottom of the sulfur discharging section; a heat exchanger I is arranged in the heat exchange section, a closed sulfur foam channel I is arranged in the heat exchanger I, and other flow channels of the heat exchanger I are opened up and down; a second heat exchanger is arranged on the upper portion of the standing section, a second sulfur foam channel is formed in the second heat exchanger, an inlet of the second sulfur foam channel is connected with an outlet of the first sulfur foam channel, and an outlet of the second sulfur foam channel is annularly formed in the bottom of the outermost runner of the second heat exchanger; the bottom of an outlet of the second sulfur foam channel is connected with a cylindrical anti-mass-mixing partition plate, and the outlet of the second sulfur foam channel is communicated with a gap formed between the anti-mass-mixing partition plate and the shell of the standing section; a heater is arranged in the heating section, and a heat preservation jacket is arranged in the sulfur discharging section. Local boiling is eliminated.

The invention provides pulping equipment for producing compound fertilizer through high-tower granulation, and relates to the technical field of tower-type production of compound fertilizer, the pulping equipment comprises a melting pot and an upper cover, the upper cover is provided with a driving motor, the output end of the driving motor is provided with a stirring assembly, and the side wall of the melting pot is internally provided with a heater; the bottom of the melting pot comprises a discharging hopper, the inner bottom of the discharging hopper comprises a bottom hopper with a conical inner face and a conical outer face, guide grooves are distributed in the inner face of the bottom hopper in a circumferential array mode, and an outer groove is formed in the outer edge of the bottom hopper. The compound fertilizer slurry and the microbial fertilizer are separated, so that long-time high-temperature environment is avoided, the probability that the microbial fertilizer is wrapped in the compound fertilizer slurry before granulation can be greatly reduced, rapid granulation is matched, the high-temperature-resistant requirement of the microbial fertilizer is lowered, the microbial fertilizer is promoted to fall off through rotation of the conical roller, and the production efficiency is improved. Meanwhile, excessive microbial fertilizer is prevented from being added into the compound fertilizer slurry.

The invention relates to a method for adding oil-free zinc stearate in polystyrene, which is applied to the field of polystyrene production, the oil-free zinc stearate is melted in a closed and oxygen-free state, so that the zinc stearate can be effectively prevented from being oxidized and decomposed by heating, and the chemical property stability of the zinc stearate can be ensured, thereby being beneficial to maintaining the consistency of the performance of a terminal product. The oil-free zinc stearate is added in a liquid form after being heated and melted, so that the zinc stearate can be better dispersed in the polystyrene, the polystyrene and the oil-free zinc stearate are more uniformly mixed, and the utilization efficiency of the oil-free zinc stearate is improved; according to the oil-free zinc stearate adding device, quantitative, controllable and continuous feeding of oil-free zinc stearate adding can be achieved, automatic control and process accuracy are facilitated, compared with adding of powdery oil-free zinc stearate, the oil-free zinc stearate can be prevented from being attached to equipment or a container wall, and the oil-free zinc stearate adding accuracy is further improved.

The present invention relates to a method and a device for producing ceramics, the method comprising: radiating light onto a ceramic starting material in order to heat this at least in some regions and, as a result, to produce a ceramic product, wherein the radiation of light is carried out simultaneously on a surface of at least 0.1 mm2 and / or more than 20% of the surface of the ceramic starting material, and wherein the power density of the radiated light is less than 800 W / cm2, the device comprising: —at least one receiving means for receiving a ceramic starting material and—at least one light source for radiating light onto the ceramic starting material that is or can be received in the receiving means, the device preferably being configured to radiate the light onto the ceramic starting material in order to heat this at least in some regions and, as a result, to produce a ceramic product, and wherein the receiving means has an insulation.

The application discloses a kind of high uniformity medical grade absorbable polyester, preparation method and production system, production system includes kettle type closed stirrer, auxiliary tank, three-way valve and closed kettle type reactor;Three-way valve is communicated with kettle type closed stirrer by melt metering pump;It is communicated with auxiliary tank by micro-injection pump;It is communicated with closed kettle type reactor by static mixer;The side inside of three-way valve and micro-injection pump communication side is designed funnel shape, including funnel neck and funnel mouth, the side surface and bottom surface of funnel neck are equipped with uniform small hole.The application discloses a kind of system specially used for preparing high uniformity medical grade absorbable polyester and the preparation method matched therewith, by using special production system again cooperation specific process parameter can successfully prepare with medical grade absorbable polyester, especially suitable for the preparation of poly-l-lactide and polyglycolide with higher viscosity, more difficult to produce, the product obtained has high uniformity, high molecular weight and low monomer residue.

The tailing pond system in the cold region comprises a tailing dam, a dry beach area, a clarification area, a first ore drawing pipeline and a heat dissipation pipeline, and valves are arranged at the inlet ends of the first ore drawing pipeline and the heat dissipation pipeline; the heat dissipation pipeline comprises a second ore drawing pipeline, a connecting pipeline, a pre-buried pipeline, a first anti-blocking pipeline and a second anti-blocking pipeline which are communicated in sequence; a first ore drawing pipeline and a second ore drawing pipeline are alternately arranged on the tailing dam, and a pre-buried pipeline is laid in the dry beach area; and an outlet of the second anti-blocking pipeline is higher than the level of tailing slurry discharged in the dry beach area. The invention further discloses an ore drawing method of the tailing pond system. The heat generated when the tailing slurry is discharged is used for eliminating a tailing pond freezing layer lenticular body in a cold region, it is guaranteed that the dam body infiltration line is not lifted, and the dam body safety is guaranteed.

The invention discloses triethylamine hydrochloride freezing crystallization equipment and a triethylamine hydrochloride freezing crystallization process, and relates to the technical field of triethylamine hydrochloride preparation. The device comprises a solution processing assembly, a crystallization assembly, a crystallization tank, a stirring motor and a distinguishing linkage assembly, wherein the solution processing assembly comprises a processing tank and a tank cover which is located at the upper end opening of the processing tank and is in flange connection with the processing tank; the crystallization assembly comprises a crystallization tank located in the processing tank and a stirring motor fixed to the upper end face of the tank cover; comprising a distinguishing column sliding in the transverse cylinder, a linkage column located in the processing tank and arranged in parallel with the distinguishing column at the same height, a circulating backflow assembly and a freezing recycling assembly. According to the crystallization tank, the distinguishing column slides in the transverse cylinder, so that the bent hole and the vertical hole are moved to the position under the lower end opening of the crystallization tank in different time periods, the crystals in the crystallization tank can be distinguished in size, the small crystals are conveyed into the heating box through the screw rod, the recycled small crystals are melted and recrystallized, and the crystallization efficiency is improved. And the recrystallization work is realized by utilizing the waste heat.

The embodiment of the invention relates to the field of general methods or devices for granulating raw materials, in particular to a material treatment method. The method is carried out through preset equipment, the preset equipment comprises a material transfer device, a granulation device, a stirring device, a feeding device and a transfer device, and the method comprises the following steps that S10, different kinds of powdery materials are mixed through the stirring device to obtain a mixed material; s20, the mixed material is transferred to a feeding device; s30, the mixed materials are conveyed to a material transferring device through a feeding device; s40, converting the mixed material into a material in a molten state by utilizing a material transfer device; s50, after the mixed material is converted into a material in a molten state, a granulation device is started; s60, the materials in the molten state are conveyed to a granulation device through a material transfer device; s70, the materials in the molten state are converted into flaky materials through a granulation device; and S80, the flaky materials are transferred through a transfer device. According to the method, material components can be fused, and subsequent transportation and utilization are facilitated.