31results about How to "Simultaneous recycling" patented technology

The invention discloses a method for recovering indium and germanium from a zinc leaching residue. The method comprises the following steps of: leaching the zinc leaching residue containing the indium and the germanium by using a sulfuric acid, eliminating ferric iron and removing silicon, and then, adding a hydroximic acid and P204 kerosene to synergistically extract the indium and the germanium, extracting 99% of the germanium and the indium, and then carrying out back extraction on the germanium through an ammonium fluoride and precipitating the germanium by ammonia gas or ammonia water, carrying out the back extraction on the indium through concentration and a hydrochloric acid, replacing the indium with aluminum, and roasting a germanium precipitation residue to respectively obtain an indium ingot and a germanium concentrate. By using the method, the germanium and the indium can be extracted from slag with a lower grade; a procedure is simple; the operation is easy; and fewer pollutants are discharged.

The invention discloses a method for recovering valuable elements in waste lithium ion battery electrode materials. The method comprises steps of roasting the waste lithium ion battery electrode materials in an inert gas atmosphere, the roasting temperature is 200 -600 DEG C, the time is 30-360 minutes, and the roasting slag is obtained; mixing the obtained roasting slag and an acidic solution with [H+] concentration of 0.5~8 mol/L according to the mass ratio of 1:3~10; leaching at the leaching temperature of 30-90 DEG C and leaching time of 1-8 hours, leach liquor and leach residues are filtered to be obtained; the leach liquor is used for recovering nickel, cobalt, manganese, aluminum and lithium, and the leach residues are used for preparing negative electrode materials. According to the method for recovering valuable elements in waste lithium ion battery electrode materials, a leaching reducing agent does not need to be additionally added, the battery sorting and recycling costs are reduced, the positive and the negative electrode materials can be recovered at the same time, and the economic benefits of lithium battery recovery can be improved.

The invention provides a method for preparing a positive electrode material precursor by using a waste ternary lithium battery, which adopts a first stage leaching as a pressurized ammonia leaching torealize simultaneous recovery of lithium, nickel and cobalt. The second stage leaching is atmospheric pressure acid leaching to realize the recovery of doped metal (manganese or aluminum). The invention realizes low cost of waste ternary positive electrode material, Short-process recovery and reuse, in which nickel is leached by ammonia under pressure, the comprehensive leaching rate of valuablemetals such as cobalt and lithium reaches 92%. The comprehensive recovery of valuable metals such as nickel, cobalt, lithium, manganese and aluminum is over 95% by two-stage leaching. Ammonia and leaching acid can be recycled in closed circuit. The precursor of ternary positive electrode materials prepared by regeneration can meet the needs of preparation of different series of ternary positive electrode materials, and has a good prospect of industrial application.

The invention belongs to the field of battery materials, and specifically relates to a method for recovering positive active materials from battery material offcuts and slurry. The method comprises the following steps of: filling positive plate or dry positive slurry to be recovered into a pulverizer, screening into a powder, putting the powder into a fluidized bed and removing impurities of conductive carbon and a binder; letting a gas pass through a cyclone separator on the top of the fluidized bed to remove entrained powder, passing through a fixed bed to remove harmful gases, heating and blowing into the fluidized bed for cyclic utilization, cooling the powder at the bottom, and sieving to obtain a qualified positive powder. According to the invention, the process flow is short; the powder is in a fluidization state in the fluidized bed during the process of heat treatment; and the gas and the powder fully contact with each other and the reaction is complete. Therefore, the problems of high impurity content in the product and low recovery rate in a traditional technology are fundamentally resolved; in addition, cobalt and lithium elements are simultaneously recovered, the recovery rate of an active substance reaches up to 94%, and simultaneously side-effect will not be exerted on the active substance and it selectrochemical properties.

A recycling method for a valuable element in a waste lithium ion battery electrode material comprises the following steps of roasting the waste lithium ion battery electrode material in air to obtainroasting slag, wherein the roasting temperature is 400-900 DEG C, and the heat preservation time is 30-300 minutes; and mixing the roasting slag and an acid solution with [H+] concentration being 0.5-9mol/L according to a mass ration being 1:(2-10), performing leaching under a leaching temperature being 30-95 DEG C and leaching time being 1-9 hours, and performing filtering to obtain a leaching liquid and leaching slag, wherein the leaching liquid is used for recycling nickel, cobalt, manganese, aluminum and lithium, and the leaching slag is used for recycling a carbon material. According to the recycling method, a positive electrode material and a negative electrode material of a battery are not needed to be separated, no extra leaching reduction agent is added, the recycling cost is reduced, the positive electrode material and the negative electrode material can be simultaneously recycled, and the recycling economic benefit of the lithium battery is improved.

The invention provides a method for recycling tungsten and vanadium from a waste SCR denitration catalyst. The method includes the steps that firstly, tungsten and vanadium are leached out, wherein the waste SCR denitration catalyst is placed into a NaOH solution to be leached out, and by means of solid and liquid separation, alkaline leaching liquid containing tungsten and vanadium and residues TiO2 are obtained; secondly, tungsten and vanadium in the alkaline leaching liquid are extracted and purified, wherein a kerosene solution containing primary amine N1923 serves as an extracting agent for extraction; and thirdly, reextraction separating and recycling of tungsten and vanadium in an extracted organic phase are performed. According to a process for extracting tungsten and vanadium fromthe waste SCR denitration catalyst in an alkaline leaching manner, due to the fact that waste catalyst powder and the NaOH solution are subjected to one time of leaching in a high pressure state, a liquid phase containing Na2WO4 and Na2VO3 can be obtained, efficient leaching of tungsten and vanadium is achieved, the W leaching rate reaches 97.46%, the V leaching rate reaches 88.6%, it is also kept that crystalline grains of TiO2 are anatase, and anatase can be reused as a catalyst carrier.

The invention relates to a method for simultaneously recycling silicon in silicon waste materials and titanium in titanium-containing slag through metallic aluminum, and belongs to field of non-ferrous metal secondary resource comprehensive technologies. The method comprises the steps that CaO powder and SiO2 powder are uniformly mixed, then Na3AlF6 is added to be uniformly mixed, and mixed powderis obtained; the mixed powder is pre-molten for 0.5-1 h under the condition that the temperature is between 1,400 DEG C and 1,600 DEG C to obtain a pre-molten block, and the pre-molten block is cooled and then ground into powder to serve as a fluxing agent; metallic aluminum particles, the metallic silicon waste materials, the titanium-containing slag and the fluxing agent are uniformly mixed toobtain a mixed material, and the mixed material is smelted for 2-4 h at high temperature under the condition that the temperature is between 1,500 DEG C and 1,800 DEG C; and the high-temperature smelted material is cooled to room temperature at the constant speed, linear cutting treatment is conducted, and an alloy block containing aluminum, silicon and titanium is obtained. According to the method, the purpose of recycling silicon and titanium from the silicon waste materials and the titanium-containing slag simultaneously is achieved, and the current comprehensive recycling problem of the silicon waste materials and the titanium-containing slag is solved.

The invention discloses a synergic extraction agent for extracting and separating tungsten from a molybdate solution. The synergic extraction agent for extracting and separating the tungsten from the molybdate solution comprises a primary amine extracting agent and pyridine carboxylic acid. In addition, the invention further discloses a method for extracting and separating the tungsten from the tungstenic molybdate solution. The method comprises the following steps of firstly adjusting a pH value of the tungstenic molybdate solution to be 7.5 to 8.5, and then contacting with an organic phase containing the synergic extraction agent subjected to acidizing so as to carry out multistage extraction, wherein a detergent is an alkaline solution, and during a multistage extraction process, the tungsten is enriched in the loaded organic phase, and molybdenum is enriched in raffinate, so that further removal of the tungsten in the molybdate solution is realized. The loaded organic phase adopts the alkaline solution for re-extracting to obtain a strip liquor rich in the tungsten. The re-extracted organic phase is treated through an inorganic acid solution so as to return to extraction. According to the synergic extraction agent for extracting and separating the tungsten from the molybdate solution and the method for extracting and separating the tungsten from the molybdate solution provided by the invention, the effect on removal of the tungsten in the molybdate solution with high tungsten content is good, the process flow is short, the cost is low, and the industrialization can be realized easily.

The invention provides a boiler smoke waste heat utilization and white smoke removal integrated system. The boiler smoke waste heat utilization and white smoke removal integrated system comprises a smoke waste heat absorbing unit which is mounted on a smoke passageway and provided with a plurality of subunits; the multiple subunits are arranged on the smoke passageway in sequence, smoke waste heatis exchanged and recovered in a cascade mode through the multiple subunits, and heat energy of the waste heat at different temperatures is obtained; and a smoke waste heat utilization unit and the smoke waste heat absorbing unit are connected through a heat circulation pipeline, the smoke waste heat utilization unit is provided with a plurality of subunits, and the different subunits utilize theheat energy of the waste heat at the different temperatures to heat water, air and discharged smoke in a power station water system, an air system and a smoke system. Cascade utilization of the energyis achieved, and energy saving, water saving and white smoke removal can be simultaneously achieved.

The present invention provides a catalyst recovery process, which comprises: adding gasification furnace ash residue containing a catalyst and a digestion agent to a reactor, uniformly mixing, adding a recovery medium to the reactor, carrying out a reaction, and separating to obtain a catalyst recovery liquid and first residue; and carrying out desilication operation on the catalyst recovery liquid to obtain an impurity-ion-removing catalyst recovery liquid and second residue, and conveying the impurity-ion-removing catalyst recovery liquid to a catalyst concentration and loading unit. According to the present invention, with the process, the simultaneous recovery of the water-soluble catalyst and the insoluble catalyst is achieved, the water washing and the pressure filtration during the digestion are eliminated so as to simplify the process, the agglomeration phenomenon generated during the mixing of the digestion agent and the gasification furnace ash residue being subjected to the water washing is avoided so as to complete reaction and improve the catalyst recovery rate, and the water consumption in the water washing link is eliminated so as to save the water resource, improve the catalyst metal ion concentration in the recovery liquid, and reduce the energy consumption of the catalyst concentration unit.

The invention designs a simple, convenient and efficient regeneration process for a waste nickel-cobalt-manganese ternary lithium ion electrode material, so that a waste nickel-cobalt-manganese positive electrode material and a graphite negative electrode material are simultaneously recycled and regenerated into a sodium ion battery negative electrode material, and belongs to the technical field of lithium ion battery material recycling. The method mainly comprises the following steps: 1, mixing waste anode powder, waste cathode powder and sublimed sulfur according to a certain proportion, and carrying out mechanical ball milling to realize uniform compounding; 2, performing high-temperature calcination in a tubular furnace, and achieving the preparation of the carbon-based metal sulfide composite material in one step; 3, extracting lithium from the composite material by water leaching, and drying the leaching residue to directly use the leaching residue as a sodium ion battery negative electrode material. According to the invention, the pressure of environment and resources can be effectively relieved, and huge economic benefits are brought. Meanwhile, the method is simple and efficient in process and beneficial to large-scale preparation.

The invention relates to a construction waste recycling and crushing equipment and a using method thereof. The equipment comprises a machine box, a discharging device, a crushing device, a impurity removing device and a collection box; and the crushing device comprises a first crushing device and a second crushing device, the discharging device is arranged at the upper end of the machine box, thefirst crushing device is arranged at the lower end of the discharging device, the impurity removing device is arranged at the lower end of the first crushing device, the second crushing device is arranged at the lower end of the impurity removing device, and the collection box is arranged at the lower end of the second crushing device. The method comprises the following steps that construction waste is treated by the discharging device, large-size materials sequentially pass through the first crushing device and the impurity removing device, small-size materials directly enter the impurity removing device, and the impurity removing device enters the second crushing device after being treated, and finally enters the collection box. According to the construction waste recycling and crushingequipment, centralized treatment of the large-size building waste is realized, resources are saved, the equipment operation is stable, the efficiency is high, the service life is long, various metalsdoped in the construction waste are separated, and the recovery processing quality of the construction waste is improved.

The invention provides a waste heat and water recovery system and method for a coal-fired power plant. The system comprises a boiler, an air pre-heater, a dust collector, a desulfurizer, a chimney, asteam turbine and a cooling regenerator, wherein the system further comprises a fume waste heat recovery device that is installed between the air pre-heater and the dust collector and is respectivelyconnected to the cooling regenerator and the air pre-heater, and a water recovery device installed between the desulfurizer and the chimney. The method comprises the following steps that the fume enters the fume waste heat recovery device after being discharged from the boiler, and is cooled by the cooling regenerator; the fume is further cooled in the fume waste heat recovery device; the cooled fume enters the water recovery device after being de-dusted by the dust collector; the fume entering the water recovery device is treated by the water recovery device to obtain water and solution, thesolution is put in the water recovery device, and the water is recovered. The waste heat and water recovery system and method for the coal-fired power plant provided by the invention reduce the overall investment while conserving energy and reducing emission.

A device for extracting krypton and xenon in liquid oxygen through low-temperature rectification comprises a first-stage concentrating tower, a second-stage concentrating tower, a third-stage concentrating tower, a high-pressure oxygen pump, a water bath type vaporizer, a high-pressure throttle valve, a heat regenerator, an impurity and methane removing module and a heat exchanger, wherein one side of the lower portion of the first-stage concentrating tower is connected with a first pipeline for feeding raw material liquid oxygen, the bottom of the first-stage concentrating tower is sequentially connected with the high-pressure oxygen pump, a liquid oxygen channel of the water bath type vaporizer, the high-pressure throttle valve, the heat regenerator, the impurity and methane removing module, an oxygen channel of the water bath type vaporizer and an oxygen channel of the heat exchanger through pipelines, and the oxygen channel of the heat exchanger is connected with the upper portionof the third-stage concentrating tower through a sixth pipeline. The second-stage concentrating tower is mounted above the third-stage concentrating tower, the top of the second-stage concentrating tower is connected with the middle of the first-stage concentrating tower through a pipeline, and a second reboiler is arranged between the second-stage concentrating tower and the third-stage concentrating tower. The device for extracting the krypton and the xenon in the liquid oxygen through low-temperature rectification is wide in application range and can operate independently, treat a large amount of liquid oxygen without being limited by the scale of an air separation device, and produce the krypton and the xenon on a large scale.

The invention relates to an offshore platform tower type submersible pump cable take-up and release apparatus. Cables are respectively led out from a junction box (11) of a lifting pipe (10) arranged on pile legs (12), and wind around respective cable take-up devices (16). When a submersible pump (14) needs to ascend or descend to satisfy different operation water depths of a platform, the cable take-up devices (16) are manually rotated to enable the cables and the submersible pump to elevate in a synchronous manner, and at the moment, connection cables (17) between the take-up devices (16) and a deck junction box should be disconnected. When the submersible pump is elevated to the operation water depth of the platform, locking pins (8) of the take-up devices are inserted so that rotating discs (1) are fixed, finally the connection cables (17) between the take-up devices (16) and the deck junction box are connected, and the submersible pump can operate. According to the apparatus, the distortion of cables of the submersible pump and marine growth preventing cables is avoided, the service lifetime of the cables is prolonged, and the labor intensity is reduced.