926 results about "Graphite electrode" patented technology

The utility model provides a roasting device for graphite electrode production, which belongs to the field of graphite electrode processing equipment and comprises a roasting box and a filter plate slidably connected to the inner wall of the roasting box, an upper sliding groove and a lower sliding groove are formed in the side wall of the roasting box, and a group of upper sealing plates are slidably connected to the side wall of the roasting box through the upper sliding groove. A transparent plate is fixedly connected to the side wall of the upper sealing plate, a set of lower sealing plates are slidably connected to the side wall of the roasting box through lower sliding grooves, limiting blocks are fixedly connected to the bottom walls of the lower sealing plates, fixing bolts are in threaded connection with the inner walls of the limiting blocks, the ends, penetrating through the limiting blocks, of the fixing bolts are further in threaded connection with the roasting box, and evenly-distributed overturning rollers are rotationally connected to the inner wall of the roasting box. The inner wall of the roasting box is connected with a cleaning part used for cleaning the overturning roller, the outer surface of the overturning roller can be cleaned through a first cleaning ring and a second cleaning ring when the overturning roller rotates, the service life of equipment is prolonged conveniently, and meanwhile the heating uniformity of the graphite electrode is improved.

The utility model provides a batching device for graphite electrode production, which comprises a mixing tank with a conical lower end, a discharge pipe, support legs, a plurality of feed hoppers, a U-shaped mounting frame, a storage barrel, a feeding hopper, a stirring module, a second control valve, an adjusting motor, an electronic scale, a U-shaped fixing frame, a bearing barrel and a stirring motor, and U-shaped scraping plates matched with the bearing cylinders are arranged on output shafts of the multiple stirring motors correspondingly. And the plurality of mounting racks are respectively welded and fixed with the top of the mixing tank. According to the batching device for graphite electrode production disclosed by the utility model, not only can the basic requirement of respectively adding a plurality of raw materials with a response amount into the mixing device be met, but also the raw materials adhered to the inner wall of the receiving device can be conveniently cleaned through the cleaning structure; and therefore, the raw materials in the bearing structure can be thoroughly discharged, and the use requirements of people are better met.

The invention provides a method for making foam slag in LF (ladle furnace) refining by using a waste graphite electrode, which specifically comprises the following steps: grinding the waste graphite electrode to obtain graphite electrode powder, and adding limestone as a foaming agent in the LF refining. 0-1.25 kg / t of steel limestone is added firstly, and 0.018-0.19 kg / t of steel graphite electrode powder is added every 2 min. Compared with the prior art, by utilizing the characteristics of high carbon content, high conductivity and low sulfur of the graphite electrode, the invention aims to realize submerged arc heating, reduce power consumption and shorten refining time so as to meet the requirement of continuously increasing LF smelting indexes under the high-quality development trend of steelmaking.

The invention discloses an anti-crusting vertical continuous graphitization furnace and an anti-crusting method in the technical field of graphitization furnaces, the top of the graphitization furnace is provided with an exhaust hole and a blanking pipe, and the bottom of the graphitization furnace is provided with a discharge pipe; a vertical graphite electrode is arranged in the graphitization furnace, and the bottom end of the graphite electrode is positioned on the lower edge of the high-temperature heating area; an exhaust pipe is arranged on the graphitization furnace and is used for exhausting ash steam in the high-temperature heating area to the outside of the furnace so as to prevent the ash steam from condensing and crusting in the low-temperature area.

The utility model relates to the technical field of graphite electrode production, in particular to a graphite electrode extrusion forming device which comprises a support, a hydraulic cylinder fixed at the top end of the support, a pressing plate fixed at the bottom end of a piston rod of the hydraulic cylinder, a plurality of pressing blocks fixed at the bottom end of the pressing plate and a support fixed at the bottom end of the support. A plurality of through grooves matched with the pressing blocks are formed in the support, check blocks are arranged in the through grooves, two baffles are fixed to the bottom end of the support, a partition plate is fixed between the two baffles, a supporting plate is arranged between the two baffles, connecting rods are fixed to the two sides of the pressing plate, connecting bolts are arranged on the two sides of the supporting plate, and a discharging hopper is fixed to one side of the support. A blocking seat is fixed to the top end of the support, an electric push rod is fixed to the side, away from the discharging hopper, of the blocking seat, and a push plate is fixed to a piston rod of the electric push rod. The stop block pushes the formed graphite electrode in the through groove to move upwards, a piston rod of the electric push rod drives the push plate to move, the formed graphite electrode can be conveniently pushed into a collecting container, and time and labor are saved.

The invention discloses a graphite electrode cooling device of a graphitization furnace, the graphitization furnace and a cooling method, and relates to the technical field of graphite electrode cooling, the graphite electrode cooling device of the graphitization furnace comprises a cooling mechanism, the cooling mechanism comprises an adhesion layer and a plate type heat pipe, an adhesion layer is arranged on the surface of the graphite electrode exposed outside the graphitization furnace, the plate type heat pipe is arranged on one side, far away from the surface of the graphite electrode, of the adhesion layer, the plate type heat pipe comprises a sealing shell, a medium cavity is formed in the sealing shell, a capillary core layer is arranged on the inner wall of the medium cavity, and a cooling medium is stored in the medium cavity; according to the graphite electrode cooling device of the graphitization furnace, the plate type heat pipe is attached to the surface of the exposed graphite electrode, circulating water cooling is not needed, phase change heat transfer of a cooling medium is utilized, the heat dissipation efficiency is improved, phase change heat transfer is not conducted under the low-temperature condition, and invalid heat exchange is avoided.

The invention belongs to the technical field of graphene material preparation, and particularly relates to a universal electrochemical preparation method of covalent functionalized graphene (CFG), which comprises the following steps: (1) in an oil seal state of light sealing oil, performing electrochemical intercalation treatment on a graphite electrode by using concentrated sulfuric acid; (2) after intercalation is completed, light sealing oil is injected into the electrolytic bath while concentrated sulfuric acid is discharged; (3) in the electrolytic bath, constructing a micro-liquid membrane reaction zone by using density and intermiscibility differences of three working liquids, namely light sealing oil, aqueous electrolyte and heavy sealing oil, and enabling the micro-liquid membrane reaction zone to be in contact with the intercalated graphite electrode to generate electrochemical oxidation to generate CFG; (4) controlling the micro-liquid membrane reaction area to directionally move relative to the intercalated graphite electrode, so that the whole intercalated graphite electrode is gradually and completely converted into CFG; and (5) putting the CFG structure after the reaction into a solvent, carrying out mechanical stripping to prepare a dispersion liquid of CFG, and drying to obtain CFG powder.

The invention relates to the field of needle coke production, and discloses needle coke as well as a preparation method and application thereof. The strength of the needle coke is 25-34%; the thermal expansion coefficient of the needle coke is 0.8 * 10 <-6 > / DEG C to 1.2 * 10 <-6 > / DEG C; in the microstructure of the needle coke, the content of the mosaic structure is 0.1%-10%; the content of the small sheet structures is 10%-30%; the content of the large sheet structure is 15-40%; the content of the fine fiber structure is 10%-45%; and the content of the crude fiber structure is 10-45%. The needle coke provided by the invention has better optical structure, thermal expansion coefficient and strength, and is suitable for producing large-diameter and ultrahigh-power graphite electrodes and graphite electrode joints.

The invention relates to the technical field of graphite electrode production, in particular to a roasting device for graphite electrode production and a roasting method.The roasting device comprises a roasting box, a sieve plate and a plurality of rotating rollers, a plurality of connecting plates corresponding to the rotating rollers are horizontally arranged in the roasting box in a sliding mode, the rotating rollers are embedded and rotationally connected to the connecting plates, and a through opening is formed in the roasting box; the end part of the rotating roller penetrates through the through hole and extends to the outer side of the roasting box, and a pair of arc-shaped scraping plates is arranged on the outer side wall of the rotating roller; and the scraping assembly drives a plurality of pairs of arc-shaped scraping plates to synchronously scrape residues on the outer side wall of the rotating roller. Compared with roasting in the prior art, by arranging the sliding assembly, the rotating assembly and other parts, the distance between the rotating rollers can be adjusted, and the graphite electrode roasting device is suitable for graphite electrodes of different thicknesses. The rotating roller can rotate to drive the electrode to roll, so that uniform roasting is ensured. During roasting or after roasting is finished, the scraping assembly can clean residues on the rotating roller.

The invention relates to a method and a device for macroscopically preparing graphene by utilizing pulse discharge. The device for macroscopically preparing graphene by utilizing pulse discharge comprises an upper discharge device, a clamping device, an upper graphite electrode, a lower discharge capacitor, a lower graphite electrode, a driving motor, a pulse power supply, a control computer and an ultrasonic device. The invention provides the method and the device for preparing the graphene in the macroscopic quantity by utilizing the pulse discharge, which can overcome the defects in the prior art, enrich the product structure of the electrochemical stripping graphene, expand the preparation condition and simultaneously realize the assembly line macroscopic quantity preparation.

The invention discloses a graphene oxide sheet long-afterglow material and a preparation method and application thereof.The preparation method of the graphene oxide sheet long-afterglow material comprises the steps that a graphite oxide electrode sheet serves as a working electrode, and the working electrode, a counter electrode and a reference electrode are immersed in electrolyte; direct current is applied through an electrochemical workstation, so that the voltage difference between the working electrode and the reference electrode is 1.8-2.0 V, an electrochemical reaction circuit is formed, electrochemical reaction is carried out until the current in a loop where the working electrode and the counter electrode are located is smaller than or equal to 1 mA, the electrochemical reaction is stopped, and the electrolyte is a saturated boric acid aqueous solution. According to the invention, through electrochemical intercalation and oxygen evolution reaction, the graphite oxide electrode plate is stripped from the graphene oxide sheet and is simultaneously compounded with the boric acid crystal in situ, so that the graphene oxide sheet long-afterglow material is directly obtained in one step, and the danger of a traditional method and the redundancy of multi-step preparation are eliminated.

The invention discloses an anti-erosion Al2O3-SiC-C slag runner castable containing pyrophyllite and a preparation method of the anti-erosion Al2O3-SiC-C slag runner castable, and belongs to the technical field of refractory materials. The Al2O3-SiC-C slag trough castable is mainly prepared from the following raw materials in percentage by mass: 30 to 45 percent of high-alumina clinker, 20 to 35 percent of pyrophyllite, 8 to 15 percent of silicon carbide, 5 to 10 percent of kyanite, 5 to 10 percent of graphite electrode powder, 3 to 6 percent of active Al2O3 micro powder, 2 to 4 percent of silicon micro powder, 1.5 to 2.5 percent of antioxidant, 3 to 5 percent of pure calcium aluminate cement and 1.5 to 2.5 percent of asphalt. In addition, explosion-proof fibers accounting for 0.03-0.15% of the total weight of all the raw materials and a water reducing agent accounting for 0.05-0.15% of the total weight of all the raw materials are added. The anti-erosion Al2O3-SiC-C slag runner castable is prepared by mixing the weighed raw materials uniformly and then obtaining the anti-erosion Al2O3-SiC-C slag runner castable. The Al2O3-SiC-C slag runner castable prepared by the method can completely meet the requirements of the use performance of the Al2O3-SiC-C slag runner castable, and the Al2O3-SiC-C slag runner castable can be well applied to a blast furnace casting house; meanwhile, the cost is reduced, and remarkable social benefits and economic benefits are achieved.

The invention provides an optimization method and system for reducing electricity consumption of a graphite electrode and improving the adhesion of medium-temperature pitch, and relates to the technical field of industrial production. The optimization system for reducing the electricity consumption of the graphite electrode and improving the adhesion of the medium-temperature pitch comprises an electric energy management module which comprises a monitoring unit, a control unit and a feedback unit, and the monitoring unit is used for monitoring the electricity consumption condition of production equipment in real time; the control unit can automatically adjust operation parameters of the equipment according to monitoring data so as to reduce electricity consumption; and the feedback unit feeds back the adjusted electricity consumption data to the data processing module. Through real-time monitoring and intelligent control of the electric energy management module, the electricity consumption in the graphite electrode production process can be effectively reduced, the system can adjust equipment operation parameters according to real-time data, energy waste is avoided, the energy utilization efficiency is improved, and through proportion adjustment and process parameter optimization of the adhesion optimization module, the production efficiency is improved. The bonding degree of the medium-temperature asphalt can be obviously improved, and process parameters can be monitored and adjusted in real time.

The invention discloses a graphite electrode roasting device based on a thermal uniformity effect, and relates to the field of graphite electrode processing equipment.The graphite electrode roasting device comprises a roasting furnace, the roasting furnace comprises a furnace shell, a roasting chamber is arranged in the furnace shell, mounting chambers are arranged on the two sides of the roasting chamber, and a fuel gas inlet pipe is communicated with the interior of the roasting chamber; and a controller is fixed on the top surface of the furnace shell. According to the graphite electrode roasting device based on the thermal uniformity effect, a worm, a worm gear and a lead screw can be driven by a second servo motor to rotate together, and then a sliding block and a sliding rod are driven by the lead screw to move in the axial direction of the lead screw; a first trapezoidal block is pushed by a sliding rod, so that a second trapezoidal block and a connecting plate can drive a first placement plate to move upwards under the limitation of a fixing column, and then the graphite electrode is lifted through the first placement plate, so that the bottom of the graphite electrode can be intermittently heated, the graphite electrode cannot be damaged, and the service life of the graphite electrode is prolonged. And all parts of the graphite electrode are uniformly heated.

The invention discloses a secondary roasting device and roasting method for graphite electrode production, and belongs to the technical field of graphite electrode roasting devices.The secondary roasting device for graphite electrode production comprises a furnace body and two sliding rails arranged on one side of the furnace body, and a bottom plate is assembled on the sliding rails in a sliding mode; the bearing plate can be pulled out of the furnace body through cooperation of the hook plate and the connecting groove, when a new bearing plate falls onto the inner barrier strip and the outer barrier strip, the reversing assembly can release the locking relation with the inner barrier strip, then the pulling force direction of the auxiliary steel cable on the guide block is changed, the auxiliary steel cable can pull the bottom plate to gradually get close to the furnace body, and therefore the furnace body is protected. And the bearing plate is pushed into the furnace body through the ejector rod, manual intervention is little in the whole process, so that the process of entering and exiting the furnace is safer, the whole operation is completed only through cooperation of the main steel cable and the auxiliary steel cable, and the device is simple in overall structure and convenient to maintain.

The invention belongs to the technical field of industrial wastewater recycling and lithium ion battery positive electrode material preparation, and relates to a method for recycling phosphorus and nickel resources in chemical nickel plating wastewater and synthesizing high-purity iron phosphate through a paired electrolysis method. The method comprises the steps that a double-chamber diaphragm electrolytic cell is adopted, a diaphragm is an anion exchange membrane, an anode is iron, a cathode is at least one of a metal electrode, an alloy electrode and a graphite electrode, an anolyte is a solution containing sulfate radicals, a catholyte is chemical nickel-plating wastewater, a paired electrolysis method is adopted, phosphorus resources are recycled from the anode, and high-purity iron phosphate is synthesized. And nickel resources are recovered through cathode electrodeposition of nickel. According to the method, phosphorus and nickel are recycled through an electro-deposition method, and the current efficiency is greatly improved; the method is high in recovery rate, low in cost and simple in process, industrial large-scale production can be realized, and the recovered iron phosphate has very high purity and can be used as a precursor raw material for synthesizing lithium iron phosphate serving as a positive electrode material of a lithium ion battery.

The utility model provides a crushing device for graphite electrode production, which comprises a crushing box with a conical lower end, and a discharge port, support legs, a crushing module, a feed hopper, a fixed frame, a plurality of springs, a mounting chute, a screening tank, a blanking guide cylinder, a push-pull module, a vibration motor and an access hole arranged at the bottom of the crushing box, a side plate matched with the inlet and outlet hole is further detachably arranged at the right end of the crushing box. According to the crushing device for graphite electrode production, the basic requirement for crushing treatment of raw materials for graphite electrode production can be met, the crushed raw materials can be screened through the screening structure, a user can conveniently take out the screening structure from the crushing device, and the crushing device is convenient to use. And therefore, large-particle raw materials retained in the screening structure and clamped in the screening holes of the screening structure can be conveniently cleaned, and the subsequent screening treatment efficiency and effect of the crushed raw materials are prevented from being influenced.

The invention relates to the technical field of laser processing, in particular to a graphite ultra-micropore femtosecond laser beam splitting array processing device and a heat influence suppression method, the graphite ultra-micropore femtosecond laser beam splitting array processing device comprises a laser micropore processing equipment main body provided with a laser emission head, and the laser micropore processing equipment main body is provided with a heat suppression workbench mechanism and a workpiece air cooling device; the thermal inhibition workbench mechanism comprises a base, a cover plate, a liquid cooling assembly and an air cooling assembly. The air cooling assembly comprises an end plate and a plurality of exhaust fans. By means of the heat suppression workbench mechanism with the liquid cooling assembly and the air cooling assembly, a composite heat conduction path of'contact conduction-liquid cooling circulation-airflow heat dissipation 'is formed, heat of the workpiece is rapidly conducted out, and the heat influence of ultra-micropore machining of the graphite workpiece is suppressed; the annular pipe blows air flow to a machining area through the air exhaust groove, heat of a laser action point is taken away instantly, and the heat influence on the graphite electrode micro hole in the machining process is further reduced.

The invention provides a method for degrading a perfluoroalkyl compound by activating peroxymonosulfate based on a graphite electrode. Comprising the following steps: step 1, pretreatment of a graphite rod electrode: soaking the graphite rod electrode in a sulfuric acid solution to remove surface impurities; step 2, preparing an electrolyte: preparing the electrolyte containing a perfluoroalkyl compound to be degraded, a background supporting electrolyte and peroxymonosulfate (PMS), and fully stirring to ensure uniform distribution; and step 3, inserting the pretreated graphite rod electrode into electrolyte in an electrolytic bath, adjusting current and voltage, and carrying out electrolysis under the condition of solution stirring. According to the method, the feasibility of activating the PMS to degrade the perfluoroalkyl compound by the low-oxygen-evolution-potential electrode is proved for the first time, and the cognitive limitation of the traditional technology is broken through; the prior art generally depends on a high oxygen evolution potential electrode (such as a BDD electrode, and the oxygen evolution potential is larger than 2.0 V / SHE) to activate PMS so as to degrade perfluoroalkyl compounds.

The iron casting waste cast iron scrap recycling and smelting device comprises a supporting bottom plate, an electric arc furnace and a supporting frame are connected to the middle of the top of the supporting bottom plate, a plurality of graphite electrodes are connected to the bottom of the supporting frame, and a second electric cylinder is connected to the position, between the electric arc furnace and the supporting frame, of the top of the supporting bottom plate; a driving motor is connected to the top telescopic power end of the second electric cylinder, a rotating disc and a fixed supporting rod are connected to the top power end of the driving motor, a cover plate matched with the electric arc furnace is connected to the end of the fixed supporting rod, and a protective inner sleeve is connected to the top of the cover plate and located on the outer side of the inserting hole; the bottom of the supporting plate is connected with a protective inner sleeve connected with the protective inner sleeve in a sleeved mode. Compared with the prior art, the device has the advantages that the electric arc furnace can be covered in a sealed mode through the cover plate capable of rotating and ascending and descending, spraying around the electric arc furnace can be prevented, meanwhile, the inner sleeve and the outer sleeve are arranged at the positions of the inserting holes, spraying cremation can be prevented, and therefore safety is greatly improved.

The utility model belongs to the technical field of graphite electrode processing, and particularly relates to a graphite electrode smashing device which comprises a smashing box, a smashing assembly is arranged in the smashing box and comprises two smashing rollers and two outer cover protecting sleeves, the two outer cover protecting sleeves are located on the outer sides of the two smashing rollers respectively, and the smashing rollers are arranged on the smashing box. The outer cover protecting sleeve is slidably connected with the crushing roller, the crushing roller is rotatably connected with the crushing box, and one end of the outer cover protecting sleeve penetrates through the crushing box; the outer cover protecting sleeve can be pushed by making three-point pushing rods make contact with connecting fixing strips, so that powder on the surface of the outer cover protecting sleeve can be scraped off under the inner wall of the smashing box and enters a smashing cavity, then the outer cover protecting sleeve is pushed to the outer side of a smashing roller, the position of the outer cover protecting sleeve is limited through a sealing cover plate, and the smashing efficiency is improved. And therefore, powder on the crushing rollers can be treated, sufficient cleaning can be performed along the circumferential surface, and the using effect of the crushing device is improved.

The invention relates to the technical field of smelting devices, and provides a direct-current submerged arc furnace for smelting, which comprises an operation platform, an electric furnace body, a low smoke hood type furnace cover, a guide rack, a rectifier transformer, a direct-current power supply, a cooling water system and a hydraulic station, and is characterized in that the low smoke hood type furnace cover is erected and mounted at the upper end of the electric furnace body; the low smoke hood type furnace cover is composed of a side wall and a top cover, a graphite electrode clamp is arranged above the low smoke hood type furnace cover, the graphite electrode clamp comprises a connecting shaft, the upper end of the connecting shaft is fixedly connected with the guide rack, and a sliding rod is vertically installed at the upper end of the connecting shaft. An original alternating-current submerged arc furnace holder system is omitted, the electric arc furnace type conductive cross arm stand column is adopted for lifting, lifting is stable, the lifting speed is adjustable and controllable, a traditional alternating-current transformer is designed into a rectifier transformer and a direct-current power source, main electric energy is provided, electric energy loss is reduced, and the effects of saving smelting cost and reducing power grid impact are achieved.

The invention relates to the technical field of graphite electrode production and material screening, in particular to a novel material screening mechanism for graphite electrode roasting production, which comprises a bottom support frame, the upper part of the bottom support frame is slidably connected with a first support frame and a second support frame respectively, and a material receiving hopper is fixedly mounted on the second support frame; a triangular supporting frame is arranged on the first supporting frame, a vibrating screen power assembly is arranged between the first supporting frame and the second supporting frame, frequency modulation devices capable of adjusting the vibrating screen frequency of the vibrating screen power assembly are arranged on the two sides of the bottom supporting frame, and a longitudinal vibrator located between the first supporting frame and the second supporting frame is arranged on the bottom supporting frame. One end of the triangular supporting frame is rotationally connected with a screen, and the other end of the triangular supporting frame is provided with an elastic vibrator capable of elastic vibrating screen materials on the screen. According to the novel material screening mechanism for graphite electrode roasting production, automatic multiple-time multi-form vibration screening can be effectively conducted on graphite electrode raw material particles, the raw material difference between tanks is reduced, and the stability of the subsequent process in production is improved.

The invention relates to dust detection, in particular to a dust isolation sensor with a self-cleaning function, which comprises a box body, the box body is provided with an air duct, the air duct is provided with an air inlet and an air outlet, the dust isolation sensor also comprises a light-emitting component and a light-sensing component, a graphite electrode is inserted into the air duct, and the graphite electrode is connected to one electrode of a direct-current power supply; an air suction port of the air suction fan faces an air outlet of the air duct; the vibration motor is mounted on the outer side wall of the air duct, and the vibration motor vibrates to drive the air duct to vibrate; the device further comprises an air blowing nozzle, the air blowing nozzle comprises an air inlet and an air blowing opening, the air blowing opening faces the inner cavity of the air channel, the air inlet is connected to an air pump, and the air pump is connected to an air source containing clean air. The box body is connected with a ceramic bracket which supports a graphite electrode; a rubber pad is padded at the connecting part of the ceramic bracket and the graphite electrode; dust in the air duct is continuously removed, and the long-term use stability of the dust sensor is kept.

The embodiment of the invention discloses an electrode evaluation method. The method comprises the following steps: acquiring the initial active lithium amount of a to-be-detected symmetric battery; the working electrode and the counter electrode of the symmetrical battery are made of graphite; carrying out charging and discharging process control on the symmetrical battery for multiple times to obtain the residual active lithium amount; based on the initial active lithium amount and the residual active lithium amount, evaluating a graphite electrode of the symmetric battery; in each charging and discharging process, the symmetrical battery is charged and discharged at a relatively high first charging rate and a relatively high first discharging rate, so that lithium removal of the counter electrode and the working electrode is completed, and the symmetrical battery is charged to a second voltage, so that electrolysis of a solid electrolyte interface film of the counter electrode is completed; and discharging the symmetrical battery to a fourth voltage to enable the solid electrolyte interface film of the working electrode to complete electrolysis. According to the invention, the time of each charging and discharging process and the consumption speed of lithium ions are accelerated, so that the evaluation speed of the graphite electrode is accelerated.

A system and method for a conversion of plastic and carbon feedstock resulting in a hybrid morphology of carbon nanotubes is provided herein. The system includes a feedstock containing a plastic, a conductive carbon, and a metal-based catalyst. The system further includes a plurality of graphite electrodes configured to conduct a current through the feedstock. The system further includes a reservoir configured to contain the feedstock while allowing outgassing during the conversion. The system further includes a chamber configured to contain combustible volatile substances. The system further includes a power source configured to provide electrical power for the conversion. The system further includes an electrical controller configured to use a feedback mechanism for controlling the conversion and growth of the carbon nanotubes.

The utility model provides a graphite electrode roasting mechanism which comprises a roasting furnace with the lower end in a conical cylinder shape, supporting legs are arranged at the side end of the bottom of the roasting furnace, a discharging port is formed in the bottom of the roasting furnace, and a top cover, a feeding hopper, a plurality of transverse plates, a roasting cylinder, a plurality of first telescopic push rods, a vertical rod, a bottom cover, a roasting flame nozzle and a through hole are detachably arranged on the top of the roasting furnace. The top cover is further provided with an exhaust pipe, and the upper portion of the roasting furnace is further provided with an air cooling module. According to the graphite electrode roasting mechanism disclosed by the utility model, the basic requirement of roasting the graphite electrode raw material can be met, and the graphite electrode raw material can be conveniently and efficiently cooled, so that the overall efficiency of processing the graphite electrode raw material is improved.

The invention discloses a graphene composite high-entropy metal oxide coating titanium-based electrode as well as a preparation method and application thereof, and the preparation method of the graphene composite high-entropy metal oxide coating titanium-based electrode comprises the following steps: S1, pretreating a titanium substrate; s2, the pretreated titanium substrate is placed in an electro-deposition solution, wherein the electro-deposition solution is a mixed solution of a graphene oxide solution and a high-entropy metal salt solution; s3, the titanium substrate is used as an anode, a graphite electrode is used as a cathode, and electro-deposition is carried out on the titanium substrate; and S4, in the inert gas atmosphere, heat treatment is carried out on the titanium substrate deposited with the coating. The graphene composite high-entropy oxide is prepared through electro-deposition, the process is simple, and the preparation cost is low. When the prepared graphene composite high-entropy oxide coating titanium electrode is used for treating high-concentration wastewater with the COD ranging from 500 mg / L to 20000 mg / L, 85% or above of COD can be removed within 120 min, stability is excellent, and wide application prospects are achieved.

The invention provides a medium-temperature pitch proportion optimization method and system for a graphite electrode, and relates to the field of material engineering. The medium-temperature pitch proportion optimization system for the graphite electrode comprises a proportion analysis module which establishes a proportion model of graphite electrode production through mathematical modeling and data analysis according to the particle size distribution of graphite particles and the viscosity and softening point characteristics of pitch, can analyze various parameters in the production process of the graphite electrode in real time, and can optimize the proportion of the pitch in the graphite electrode production process; the optimal asphalt ratio range is calculated; and the data acquisition module is used for acquiring data of key parameters in the production process, including the size, temperature and humidity of graphite particles and the viscosity of asphalt, and is connected with the central control system through a sensor to transmit the data in real time for further analysis. Through the accurate asphalt proportion and optimization process, the strength, thermal stability, oxidation resistance and other physical properties of the graphite electrode can be effectively improved, and the rejection rate is reduced.

The invention belongs to the technical field of cooperative control, and belongs to an ultrahigh-power graphite electrode roasting multi-parameter cooperative control method and system, and the method comprises the steps: collecting full-dimensional operation parameters of a roasting system, carrying out the partition division of a roasting furnace, and collecting the coupling state data of each partition in real time. And identifying different roasting abnormal scenes based on the coupling state data, and constructing process collaborative risk data under different roasting abnormal scenes in combination with the stage of the current roasting process and the aging state of the furnace body. And marking a to-be-adjusted parameter set in the cooperative control strategy according to the process cooperative risk data, and performing adjustment to obtain an optimized cooperative control strategy. According to the balance degree index, performing comprehensive evaluation on each control node in the optimization cooperative control strategy, defining the control nodes which do not pass the evaluation as risk nodes, and generating a risk adjustment strategy pointing to the risk nodes; according to the method, multi-target collaborative optimization can be realized, the production cost is reduced, and the stability and controllability of the roasting process are improved.