52results about How to "Efficient destruction" patented technology

The invention provides a method for remedying soil heavy metal pollution, improving saline and alkaline land and recycling microalgae for resource utilization through a multi-pond-alga water circulation irrigation system, and belongs to the field of soil remediation and resource utilization. Through the interaction of man-made ponds, microalgae and soil, a pond-microalga combined remediation system is adopted as the core, the soil is prepared and domesticated to remedy the microalgae, the multiple ponds are used for collecting rainwater, the microalgae are cultivated and subjected to expandingpropagation, and the microalgae are sprayed to the field; through circulation irrigation, multi-time spraying and alga water recycling, heavy metal in the polluted soil is taken away, the salinity ofthe soil is reduced, the nutritional ingredients of the soil are improved, and the soil fertility is restored; the microalgae are harvested through the method of pond enrichment and flocculation andaeration, the alga charcoal preparation process is utilized through combination, and resource utilization is achieved; and the system achieves automatic control through a sensor, a PC and a control component. The remediation method comprises a heavy metal / saline and alkaline land remediation microalga cultivation system, a water collection system, an intelligent spray irrigation unit, a microalgarecycling system and a microalga resource utilization system.

The present invention relates to a kind of stirring cooking utensil, which has high shearing force to destroy the bonding of glutinous cooked material for homogeneous heating. The stirring cooking utensil includes a circular container centering a vertical axis, a rotating arm centering the vertical axis, a main stirring shaft set on one side of the rotating arm and provided with main stirring blade and main scraping blade in the bottom, a subsidiary scraping arm set on the other side of the rotating arm provided with subsidiary scraping blade and side scraping blade in the lower part.

The invention discloses a preparation method and an application of flaxseed polysaccharides with antiviral and immune activity. The preparation method adopting flaxseeds as a raw material comprises the following steps: crushing flaxseeds, carrying out shell-kernel separation, carrying out microwave assisted hot water extraction, carrying out Sevage technology protein removal, carrying out ethanol precipitation, freeze-drying to obtain crude flaxseed polysaccharides, and carrying out ion exchange column chromatography, carrying out Sephadex column chromatography, and carrying out ultrafiltration to prepare flaxseed sulfated polysaccharides. FHP-1 obtained in the invention has homogeneous composition, and the molecular weight is 2626kDa. Polysaccharide with sulfate and triple-helical structure are separated from the flaxseeds in the invention for the first time. Cell biology experiments prove that the polysaccharides can reduce expression of hepatitis B surface antigen and hepatitis B e antigen and inhibit replication of hepatitis B viruses, can activate immune response, and improves secretion of the tumor necrosis factor TNF-a, interleukins IL-6 and IL-12, and an inflammation factor NO by immune cells.

The invention provides an in-situ destruction device and an in-situ destruction method for an unexploded hand grenade. The device comprises a movable base, a combustible adhesive extrusion mechanism, an ignition mechanism and a video monitoring system which are arranged on the base, a display platform used for receiving the information of the video monitoring system, as well as a remote controller used for controlling the movable base, the combustible adhesive extrusion mechanism, the ignition mechanism and the video monitoring system. The in-situ destruction device and the in-situ destruction method, which are provided by the invention, are capable of safely, thoroughly and efficiently destructing the unexploded hand grenade in situ, without the need of additionally increasing an explosive with an explosion equivalent, and a safe distance of the unexploded hand grenade during destruction keeps the original safe distance; therefore, prevention measures have no need to be additionally increased in a hand grenade throwing field due to the destruction operation, the workload of the destruction for the unexploded hand grenade is reduced, and treatment working for the unexploded hand grenade in the hand grenade throwing field is greatly facilitated.

The invention discloses a stone coal vanadium ore multi-stage roasting strengthened acid curing vanadium extraction method. The method is conducted through the following steps that (1) a particle sizestone coal vanadium ore block is crushed and ground into stone coal ore powder; (2) hot flue gas and the stone coal ore powder are conveyed to a suspension roasting device, and heat storage roastingis conducted at the temperature of 700-900 DEG C to form heat storage stone coal ore powder; (3) the power is conveyed to a decarburizing roasting device, air is introduced, the heat storage stone coal ore powder is suspended and decarburized at 500- 800 DEG C; (4) mixed gas is introduced into a decrystallization roasting device, and the decarburized material is subjected to oxidization reaction at 750-900 DEG C in the decrystallization roasting device to form a decrystallization roasted material; (5) water and a sulfuric acid solution are added, a mixture is stirred and mixed uniformly, curing is conducted at 140-200 DEG C, and cooling is conducted to a room temperature; and (6) mixing with water is conducted for water leaching vanadium extraction, and filtering and separating are conducted. The method is high in vanadium leaching rate, simple in process, energy-saving and environment-friendly in equipment and easy to realize industrial application.

The invention discloses a method for producing hydrogen and recycling phosphorus through electrolysis of neutral Fenton regulated residual sludge microorganism. The method comprises the following steps: firstly, performing neutral Fenton regulation on residual sludge, then performing anaerobic digestion on the regulated residual sludge, and controlling the anaerobic digestion process of the residual sludge, so as to obtain residual sludge supernatant at an acid production stage; then adding the residual sludge supernatant into an MEC reactor subjected to microbial acclimation, applying external micro voltage to the MEC reactor, and performing MEC hydrogen production; adding a magnesium source into catholyte of the MEC reactor after MEC hydrogen production is completed, adding the residualsludge supernatant at the anaerobic digestion methane production stage into the MEC reactor, and adjusting the pH value of a cathode chamber, so as to separate out struvite precipitate. Through improvement and further optimization to the technical process design of the whole treatment method and all key technical steps, compared with the prior art, the method has the advantages that the problems of high difficulty, poor effect and high cost in residual sludge treatment are solved, and phosphorus can be recycled in a struvite mode.

The invention relates to a preparation method of white carbon black / graphene oxide nano-hybrid filler, the nano-hybrid filler and application of the nano-hybrid filler. The preparation method comprises the following steps: carrying out high-speed grinding and dispersion to prepare stable white carbon black slurry modified by a silane coupling agent; then uniformly stirring and grinding and dispersing the modified white carbon black slurry with a graphene oxide / water suspension solution subjected to high-speed grinding and dispersion and / or ultrasonic treatment; connecting white black carbon and graphene oxide through a bridge effect of the silane coupling agent; and then spraying and drying to prepare the white carbon black / graphene oxide nano-hybrid filler. The nano-hybrid filler is filled into any rubber variety through a traditional melting and blending technology to prepare high-performance tire tread. The preparation method and an application technology of the nano-hybrid filler are simple; and when the nano-hybrid filler is applied to rubber, nano-dispersion of graphene in a rubber matrix can be realized and the limitation of the rubber variety can be broken through, so thata composite material has excellent mechanical property, wet slipping resistance, cutting resistance, properties of delaying dynamic and static crack growth, and the like.

The invention discloses a coal bin dredging device. The device is used for dredging a coal bin, is arranged on the lower part of the coal bin, and comprises a water spray gun freely extending into the coal bin and a power device which is connected with the water spray gun to drive the water spray gun to move freely in the coal bin. The coal bin is dredged by using the water spray gun; blocked coal in the coal bin is cut by using a water column sprayed out by the gun; the spray angle of the gun in the coal bin can be randomly adjusted to swing the sprayed water column back and forth and left and right to cut the piled coal from multiple angles and multiple surfaces, so a coal shed structure can be efficiently damaged, the coal is smoothly crushed into small pieces, and the cut coal passes through a narrow part of the coal bin smoothly; water is used as a medium for cutting and breaking the coal and can be conveniently obtained in actual working environments, water cutting is safe and other factors which cause dangerous conditions in the coal bin are not introduced, and dangerous direct operation is not required to be performed manually in the cutting process, so the safety of coal bin dredging is greatly improved.

The invention discloses a method for extracting vanadium by decarburization-crystal breaking roasting and reinforced acid leaching from vanadium-containing stone coal. The method comprises the following steps that (1) a vanadium-containing stone coal block body is crushed and ground to obtain stone coal mine powder; (2) hot flue gas is fed into a suspension roasting device, and the coal mine powder is conveyed into the suspension roasting device, is suspended under the action of the high-temperature air flow, and is discharged after heat storage roasting at the temperature of 700-900 DEG C; (3) the coal mine powder is conveyed to a decarburization roasting device, air is fed to suspend the heat-storage stone coal mine powder, decarbonizing roasting is carried out at the temperature of 500-800 DEG C, and a decarburized material is discharged; (4) a mixed gas of air and nitrogen is fed into a crystal breaking roasting device, the decarburized material is conveyed to the crystal breakingroasting device for suspension, an oxidation reaction is performed at the temperature of 750-900 DEG C, and a crystal-breaking roasting material is discharged; and (5) vanadium is extracted by acid leaching in a sulfuric acid solution. The method is simple in process flow, uniform in product property, large in equipment processing amount, efficient, energy-saving and environment-friendly, and large-scale production is easy to achieve.

The invention provides a pre-nucleation reactor of nanometer calcium carbonate and a preparation technology of the nanometer calcium carbonate. The pre-nucleation reactor comprises a jet flow section and a gel destroy section. The front end of the jet flow section is provided with a slurry inlet and a gas inlet, and the tail end of the jet flow section is provided with a flared opening. The flared opening and the gel destroy section are connected in a sealing manner. The gel destroy section relates to an SK-type static mixer or an SD-type static mixer and is provided with a slurry outlet. Gel can be destroyed rapidly and effectively in the gel destroy section and fluid passages are not liable to block. The jet flow section has an obvious function on gelatinization of reactions, and therefore temperatures, concentrations and other technology control parameters in a subsequent carbonization kettle have wide ranges.

The invention particularly provides a longhole pressure-bearing blasting method of hard coal rock and solves the problem that a conventional blasting roof control measure has a poor effect for a hard roof. The longhole pressure-bearing blasting method of the hard coal rock comprises following steps: roof caving hole construction is performed; then construction of charging holes is performed, the charging holes are 35 m long, angles of elevation are 9 degrees and 13 degrees, level angles are set as 15 degrees and 20 degrees, and large-diameter guiding holes are formed between the adjacent charging holes; the charging holes and the guiding holes are subjected to alternate spaced charging, a special hole sealing device provided with a liquid injection pipe and a drain pipe is adopted to seal orifices, and blasting is executed after liquid injection. With the adoption of the method, the utilization rate of explosive energy is high, only 70% of traditional explosive dosage is needed, the degree of damage to the coal surface is more severe, and the blasting is more efficient.

The invention provides a method for preparing an organic fertilizer from lincomycin fungi residues, and relates to harmless treatment and recovery of the lincomycin fungi residues. The method provided by the invention aims at realizing the harmless treatment and resource utilization of the lincomycin fungi residues. The method concretely comprises the following steps of collecting fresh lincomycin fungi residues; regulating the moisture content and the pH value; adding potassium peroxydisulfate and zinc acetate for treatment; performing centrifugation and precipitate collection; manufacturing the organic fertilizer. The lincomycin residues are damaged and removed; antibiotic drug resistant bacteria in the fungi residues are inactivated. The method has the advantages that the process is simple; the operation is easy. The potassium peroxydisulfate is used; the removal rate on the lincomycin is high and reaches 99.9 percent; the treatment cost is low; the period is short; the operation can be completed in half an hour. The fungi residue organic fertilizer does not contain antibiotic drug resistant bacteria; bacterium drug resistance cannot be caused in the soil; the use safety is high.

The invention discloses a method for inhibiting and removing a biofilm, which belong to the field of sterilization. The method adopts a cavitation effect to achieve the inhibition and removal of the biofilm, and specifically provides a microbubble suspension comprising microbubbles, an antibacterial agent and a solvent, the microbubble suspension is contacted with the biofilm growing on the surface of a substrate, so that the microbubble suspension completely covers the biofilm, and then a cavitation technology is applied to the microbubble suspension and the biofilm to perform the inhibitionand removal of the biofilm on the surface of a substrate. The method provides an experimental basis for the application of microbubbles in the inhibition and removal of the biofilm, especially the removal of the biofilm in a narrow space, and provides a theoretical basis for the preparation of the highly efficient and safe biofilm removal preparations.

The invention relates to a method for catalyzing ozone to reinforce sludge dewatering by utilizing sludge-derived biochar. The method comprises the following steps: (1) preparing the sludge-derived biochar: performing high-temperature calcination and pyrolysis on sludge to obtain the sludge biochar, mixing the sludge biochar with Mn < 2 + > and Fe < 3 + > solutions, stirring, performing ultrasonic treatment, adding alkali liquor, performing thermal activation, standing, aging, washing and performing vacuum drying, and obtaining the sludge-derived biochar loaded with the iron-manganese spinel; and (2) sludge reinforced dehydration: adjusting the pH value of the sludge to be dehydrated to weak acidity, adding the sludge to a conditioning reaction device, adding the sludge-derived biochar, uniformly stirring, introducing ozone for treatment, and dehydrating to obtain the dehydrated sludge. According to the method, the sludge derived biochar with efficient catalytic performance is prepared from the sludge of the sewage plant, ozone treatment is coupled, the dewatering performance of the sludge can be effectively improved, the dosage of chemicals is reduced, secondary pollution is avoided, the subsequent transportation and treatment cost of the sludge is saved, and safe treatment of the sludge is facilitated.

The invention relates to gRNA for targeted destruction of an SARS-CoV-2 genome and an application of the gRNA, and belongs to the technical field of gene editing. The gRNA comprises a targeting structural domain, and a sequence of the targeting structural domain targets an S region of the SARS-CoV-2 genome. The invention also provides a gRNA expression vector for treating SARS-CoV-2 infection, a Crispr system, a composition containing the gRNA or nucleotide encoding the gRNA, and a pharmaceutical application of the gRNA expression vector, the Crispr system and the composition. The gRNA provided by the invention can destroy the Spike region of the SARS-CoV-2 genome in a targeting manner, and can be used for treating the SARS-CoV-2 infection.

The invention provides an in-situ destruction device and an in-situ destruction method for an unexploded hand grenade. The device comprises a movable base, a combustible adhesive extrusion mechanism, an ignition mechanism and a video monitoring system which are arranged on the base, a display platform used for receiving the information of the video monitoring system, as well as a remote controller used for controlling the movable base, the combustible adhesive extrusion mechanism, the ignition mechanism and the video monitoring system. The in-situ destruction device and the in-situ destruction method, which are provided by the invention, are capable of safely, thoroughly and efficiently destructing the unexploded hand grenade in situ, without the need of additionally increasing an explosive with an explosion equivalent, and a safe distance of the unexploded hand grenade during destruction keeps the original safe distance; therefore, prevention measures have no need to be additionally increased in a hand grenade throwing field due to the destruction operation, the workload of the destruction for the unexploded hand grenade is reduced, and treatment working for the unexploded hand grenade in the hand grenade throwing field is greatly facilitated.

The invention discloses an offshore soil texture seabed jetting disturbance device. A shallow layer jetting vehicle and a deep layer jetting hammer are included. A front shaft barrel and a rear shaftbarrel of the shallow layer jetting vehicle are hollow inside, and the bottom is provided with a plurality of rows of jetting holes. The two ends of each shaft barrel are provided with a rotation shaft, and walking wheels are arranged on the rotation shafts. The upper portions of the front shaft barrel and the rear shaft barrel are fixedly connected with a dragging bucket, balance weight blocks can be arranged in the dragging bucket, and the rotation shaft of the front shaft barrel is provided with a bracket capable of rotating around the rotation shaft. After a first water injection pipe is installed on the front shaft barrel and the rear shaft barrel based on a first water inlet hole, high-pressure water flow can be sprayed out of the multiple rows of jetting holes after entering the shaft barrels, and a seabed soil body is scoured. The interior of the deep layer jetting hammer is hollow, and a plurality of jetting holes are evenly arranged. A second water injection pipe is connected, the high-pressure water flow can be sprayed out of the multiple jetting holes after entering the deep layer jetting hammer based on the second water injection pipe, and the seabed soil body is scoured. According to the offshore soil texture seabed jetting disturbance device, through combined application of the shallow layer jetting vehicle and the deep layer jetting hammer, the seabed soil bodyin the large depth range can be disturbed and damaged, and later penetration construction of a torpedo anchor or a barrel-shaped foundation is facilitated.

The multi-stage decoupling conical cutter head comprises a circular-truncated-cone-shaped main cutter head and a circular-truncated-cone-shaped auxiliary cutter head, the large-diameter end of the circular-truncated-cone-shaped main cutter head is matched with a heading machine body in a rotating mode through a main cutter head driving unit, and the small-diameter end of the circular-truncated-cone-shaped main cutter head is connected with the large-diameter end of the circular-truncated-cone-shaped auxiliary cutter head in a rotating mode. And the large-diameter end of the circular-truncated-cone-shaped sub-cutterhead is in rotary fit with the heading machine main body through the sub-cutterhead driving unit. According to the invention, the multi-stage circular-truncated-cone-shaped cutterhead is used for replacing a traditional planar cutterhead, so that the acting area of the cutterhead and an excavation surface is increased, stress concentration is avoided, a certain space can be provided for improving the installed power of a cutterhead driving system, and the internal space of the cutterhead is increased by the conical structure of the multi-stage decoupling circular-truncated-cone-shaped cutterhead; convenience is provided for maintenance and operation of the cutterhead, and the personal safety of maintenance personnel is guaranteed.

The invention discloses a storage chip physical destruction judgment method, circuit and device, a medium and equipment. The storage chip physical destruction judgment method comprises the steps thata physical destruction signal is received, and a destruction power supply is started; the real-time voltage of the voltage division circuit is detected in real time, and the destroying power supply isconnected to two ends of the voltage division circuit; and judging whether the voltage change of the real-time voltage is greater than a threshold value or not, and if so, stopping the physical destruction of the current storage chip. When high-voltage physical destruction is carried out, the output time of the destruction voltage can be intelligently adjusted, the purposes of complete destruction and electric energy saving are achieved, and the storage chip is efficiently and thoroughly destroyed.

The invention discloses an unexploded ordnance destruction device and method. The device includes a bottom plate which can be attracted by a mechanical arm electromagnet, an electromagnetic gripper isinstalled on the front side of the bottom plate through a connecting rod, a gripper electromagnet is arranged in the electromagnetic gripper, the bottom of a V-shaped groove of the electromagnetic gripper is provided with a jet hole, a perforating bullet device aligning at the jet hole is arranged on the back face of the electromagnetic gripper, and a wireless receiver is arranged on one side ofthe electromagnetic gripper; and the two walls of the V-shaped groove are provided with turnover limit plates, and the two ends of each limit plate are connected to fixed pins at the two ends of the bottom of the V-shaped groove through tension springs. By means of the unexploded ordnance destruction device and method, the electromagnets and the V-shaped groove with the limit plates are used for grabbing and positioning an unexploded ordnance, and then the perforating bullet device is used for detonating and destroying the unexploded ordnance, so that the operation difficulty of ordnance fetching and the requirements for operators are reduced, the success rate of ordnance disposal is improved, the risk of work is reduced, the unexploded ordnance can be safely and efficiently destroyed on the spot, detonation of the unexploded ordnance is separated from the robot, damage to the robot is avoided, and the ordnance disposal cost is reduced.

The invention provides a method for preparing a small-size cellulose nanocrystal. The method is characterized by comprising the following steps: performing acidification hydrolysis on a cellulose rawmaterial so as to obtain a cellulose nanocrystal of relatively large molecules, and further treating the cellulose nanocrystal with a tert-butyl alcohol salt, thereby obtaining a cellulose nanocrystalof which the particle size is smaller than 50nm. The method provided by the invention is gentle in reaction condition, easy to control, simple and easy in reaction raw material obtaining, and is an efficient method for preparing small-size cellulose nanocrystals.

A high-efficiency small-scale ozone destruction device of the present invention includes a heating device and a catalytic device. A heater is installed in the heating cylinder of the heating device to realize the heating and destruction of ozone waste gas. The heating process is controlled by a temperature controller. The ozone exhaust gas enters the catalytic device through the water stop pipe at the bottom, and the catalyst cylinder of the catalytic device is filled with catalyst. The ozone exhaust gas passes through the catalyst from bottom to top to achieve complete destruction, and finally is discharged through the outlet pipe at the top; during the whole process, the heating device can pass through the temperature The control knob realizes the adjustment and control of the temperature, and the water outlet pipe at the bottom discharges the condensed water generated by the ozone exhaust gas during the heating-cooling process regularly, preventing the condensed water from overflowing from the water stop pipe into the catalyst cylinder, affecting the normal use of the catalyst; the present invention , with reasonable structural design and compact device, it combines heating destruction and catalytic destruction to efficiently complete the destruction of ozone waste gas, and has a wide range of practical and promotional values.

The invention relates to sgRNA for beta-hemoglobinopathy gene editing and application, and belongs to the technical field of gene editing. The sgRNA comprises a target domain, a first complementary domain, a connecting domain, a second complementary domain, a near-end domain and a tail domain from 5' to 3'; and the RNA sequence length of the target domain is 17-20 nt, and / or the number of base pairs between the first complementary domain and the second complementary domain is 14-18, wherein the number of base pairs close to the target domain is 6-8, and the number of base pairs close to the connecting domain is 8-10. The sgRNA disclosed by the invention has high gene editing efficiency, and the cost can be reduced on the premise of ensuring the high editing efficiency, so that the sgRNA is widely applied to preparation of medicines for treating beta-thalassemia or sickle cell anemia.

A simple bridge damaging device comprises an air hammer and a nozzle. The air hammer and the nozzle are connected with high-pressure air sources through valves respectively. The simple bridge damaging device has the advantages of being high in efficiency, practical, simple in structure and convenient to use.

The invention discloses emergency rescue equipment for a new energy automobile falling into water, which structurally comprises a vehicle body, wherein an inner cavity is formed in the vehicle body; aplurality of accommodating cavities are formed in the front and rear end walls of the inner cavity; open cavities in bilateral symmetry are formed in the left end wall and the right end wall of the inner cavity; protruding blocks in bilateral symmetry are fixedly arranged on the front end wall and the rear end wall of the inner cavity. A matching cavity with an opening is formed between the convex blocks; bottom bulges in bilateral symmetry are fixedly arranged on the left and right end walls of the matching cavity; and an electric crushing device handheld escape device used for crushing theaccommodating cavities and the open cavities is arranged in the matching cavity. According to the equipment, the electric crushing device handheld escape device and a skylight crushing device top escape device are adopted, an automobile skylight is broken in an explosive detonating mode, skylight glass is pushed out of the equipment through a spring and connecting rod type structure, and a handheld glass breaking device convenient for people to use is utilized, so that people can efficiently break and damage glass in other areas in an automobile.

The present application discloses a BIOS automatic repair function testing method, device, electronic device and computer-readable storage medium. The method is applied to a BIOS chip and includes: after receiving a preset IPMI command sent by a baseboard management controller, calling Preset the simulation program to destroy the main module of the BIOS firmware; save the damaged BIOS firmware; restart the system to test the BIOS automatic repair function. In the present application, based on the preset IPMI instruction triggering and executing the preset simulation program set in the BIOS chip in advance, the main module of the BIOS firmware can be destroyed efficiently, automatically and accurately, which not only avoids the disassembly and installation of the BIOS chip, but also does not require testers to pass the test. Consult the developer and then manually locate the main module that destroys the firmware, so the test efficiency and applicability can be greatly improved, and at the same time, the accuracy of the data location of the main module can be improved.

The invention provides a method for extracting an old medicine orange spice, which comprises the following steps of: separating an old medicine orange primary extracting solution by using a microfiltration membrane and an ultrafiltration membrane to obtain an old medicine orange concentrated solution, then adding glyceryl triacetate, and carrying out ultrasonic extraction, standing, settling and layering to obtain the old medicine orange spice. The obtained old medicine orange spice has the style characteristics of unique fruity flavor, orange peel fragrance, fresh and sweet taste, sweet aftertaste and the like, in the conventional heating cigarette filter tip forming process, the obtained old medicine orange spice is added into filter tip tows, during cigarette smoking, throat stimulation can be improved, the oral cavity moist feeling, the salivation promoting feeling and the comfort feeling can be improved, and the cigarette filter tip forming effect can be improved. The effect of improving the smoking quality of the heated cigarette is achieved. The extraction method of the old medicine orange spice provided by the invention is simple in process, short in period, environment-friendly, safe, wide in application range and convenient for large-scale and industrial production, and has relatively high economic benefits.

A method for vanadium-containing stone coal decarburization-crystal-breaking roasting enhanced acid leaching vanadium extraction, which is carried out as follows: (1) crushing and grinding the vanadium-containing stone coal block to make stone coal ore powder; (2) hot flue gas Pass into the suspension roasting device; the coal powder is transported to the suspension roasting device, suspended by the high-temperature air flow, and discharged after heat storage and roasting at 700-900 °C; (3) transported to the decarbonization roasting device, and air is introduced to make the heat storage stone coal powder Suspended, decarburized and roasted at 500-800°C, and the decarbonized material is discharged; (4) Air and nitrogen mixed gas is introduced into the crystal-breaking roasting device, and the decarburized material is transported to the crystal-breaking roasting device for suspension, and oxidized at 750-900 °C, Discharge of crystal-breaking and roasting materials; (5) Carry out acid leaching in sulfuric acid solution to extract vanadium. The invention has the advantages of simple technological process, uniform product properties, large equipment processing capacity, high efficiency, energy saving and environmental protection, and easy realization of large-scale.