1239 results about "Iron removal" patented technology

The invention belongs to the field of waste recovery, and particularly relates to a plastic production waste recovery treatment device which comprises a conveying assembly, an iron removal assembly, a smashing assembly and a collecting assembly. The conveying assembly comprises a climbing conveyor; the climbing conveyor is used for lifting and conveying plastic waste; the iron removal assembly comprises an equipment box; a magnet is arranged in the equipment box; one side of the equipment box is fixedly connected with a stand column; the top of the equipment box is fixedly connected with an air cylinder; the output end of the air cylinder is fixedly connected with a mounting frame. Positioning rods are symmetrically and fixedly connected to the two sides of the equipment box; by arranging the equipment box, iron impurities at the bottom of the bottom plate can be desorbed, then the device can remove the iron impurities in the waste materials, the device can conveniently crush the waste materials subsequently, meanwhile, the bottom plate can be driven to desorb the iron impurities by starting the air cylinder, and rapid desorption of the device on the iron impurities is achieved.

The invention belongs to the technical field of magnetite beneficiation, and particularly relates to a method for removing iron impurities in minerals through manual and automatic three-stage combination in magnet beneficiation, a three-stage iron removal system is arranged, the iron impurities and ferromanganese are detected step by step according to the size of the iron impurities and the property of magnets or ferromanganese, and a detected magnetic field is cooperatively calibrated step by step; and iron impurities in the ores are removed in a classified manner. Compared with the prior art, the system has the beneficial effects that a manual and automatic three-stage combined iron removal solution is adopted, large magnetic iron impurities, small magnetic iron impurities and ferromanganese impurities in the process are efficiently classified and removed in a targeted manner, damage of the iron impurities to equipment such as an ore crusher and a belt conveyor is avoided, the operation efficiency of the process is improved, and the production cost is reduced. And the problem of removing iron impurities in magnet beneficiation is solved.

The invention discloses an intelligent iron removal monitoring management method and system for a conveying belt and a storage medium, and the method comprises the steps: obtaining ferromagnetic target information, generating a foreign matter monitoring report according to the ferromagnetic target information, and finally carrying out the iron removal operation according to the foreign matter monitoring report and the state information of an iron removal unit. According to the device, metal foreign matters of different types and positions are sucked and removed, an operation instruction can be sent out in time before the foreign matters reach an iron removal area, timely and accurate actuation of the iron removal unit is ensured, the iron removal efficiency and accuracy of the conveying belt are remarkably improved, the impact risk on coal flow of the conveying belt is reduced, and the service life of the conveying belt is prolonged. And the automation level and the real-time monitoring capability of the system are improved.

The present invention relates to the technical field of industrial solid waste utilization, and specifically relates to an ore dissolving device and method. The ore dissolving device comprises a tank body, and an ore dissolving area, a ore-dissolving slag removal area, an iron and aluminum removal area and a leaching solution storage area, which are sequentially arranged in the tank body from top to bottom, wherein the bottom of the ore dissolving area is in communication with the ore-dissolving slag removal area; a plurality of first overflow pipes are evenly provided in the ore-dissolving slag removal area, one end of each first overflow pipe is in communication with the ore-dissolving slag removal area, and the other end thereof is in communication with the iron and aluminum removal area; a plurality of second overflow pipes are evenly provided in the iron and aluminum removal area, one end of each second overflow pipe is in communication with the iron and aluminum removal area, and the other end thereof is in communication with the leaching solution storage area; and one or more precipitant sprayers are also provided above the iron and aluminum removal area. The ore dissolving device of the present invention can not only fully leach calcium from magnesium slag, with a calcium extraction rate of 90% or higher, but can also effectively remove impurities such as iron and aluminum in an ore dissolving solution, thereby improving the purity of calcium ions in a leaching solution.

The invention discloses a magnetic separation-flotation combined stepped deep iron removal method for granite tailings. According to the method, after granite tailings are subjected to ore grinding treatment, magnetic separation impurity removal, black and white mica ore removal through reverse flotation and fine ferrodolomite ore removal through reverse flotation are conducted in sequence, after the pH of reverse flotation tailings is adjusted, fluoride-free and acid-free separation is conducted, low-iron quartz concentrate and feldspar rough concentrate are obtained, the feldspar rough concentrate is subjected to regrinding and secondary magnetic separation impurity removal, and the low-iron quartz concentrate and the feldspar rough concentrate are obtained. And low-iron feldspar concentrate is obtained. According to the method, no strong acid is involved in the whole process, the technical problem that in the prior art, strong acid is introduced in quartz and feldspar flotation, and consequently waste water and waste liquid pollution is caused is fundamentally solved, and efficient and deep removal of iron impurities in the granite tailings is achieved through the magnetic separation pre-enrichment-three-section flotation separation-step deep iron removal technology. And the overall removal efficiency of the iron impurities is remarkably improved, and comprehensive utilization of granite tailings resources is achieved.

The invention relates to ultrapure alpha-alumina powder and a preparation method thereof.The preparation method comprises the steps that aluminum scraps, an anhydrous aluminum chloride catalyst and isopropanol are subjected to a reflux reaction at the temperature of 60-80 DEG C, and aluminum isopropoxide is obtained; adding mixed alcohol of n-caprylic alcohol and isopropanol into the aluminum isopropoxide, continuing the reflux reaction, and then filtering the mixture obtained by the reflux reaction while the mixture is hot to obtain liquid composite aluminum alkoxide; carrying out atmospheric distillation on the composite aluminum alkoxide at 80-100 DEG C to remove free alcohol in the composite aluminum alkoxide to obtain dealcoholized composite aluminum alkoxide; adding high-purity water at 80 DEG C or above into the dealcoholized composite aluminum alkoxide, and carrying out two-step hydrolysis to obtain hydrolyzed slurry; carrying out reduced pressure distillation on the hydrolyzed slurry to recover alcohol in the hydrolyzed slurry so as to obtain dealcoholized hydrolyzed slurry; ,...,.... According to the method, an alcohol-aluminum alkoxide-aluminum oxide path is adopted, acid pickling for iron removal is avoided, and the ultra-pure alpha-aluminum oxide powder with the Fe content smaller than or equal to 0.5 ppm and the adjustable particle size is obtained.

The invention discloses a fracturing proppant using coal gangue and fly ash and a preparation process thereof, and relates to the field of fracturing proppants, the fracturing proppant comprises coal gangue, fly ash, silica fume, nanometer alumina, a composite pore-forming agent and a fluxing agent, and the preparation process comprises raw material pretreatment, mixing granulation, microwave-gradient sintering and post-treatment. The raw material pretreatment comprises the following steps: removing iron and impurities through carbon thermal reduction-magnetic separation; the composite pore-forming agent is enriched on the surface of the green body during mixed granulation; the microwave-gradient sintering is used for cooperatively regulating and controlling growth of mullite crystals through microwave preheating and resistance heating to form an internal acicular mullite interlaced structure and a surface micro-convex structure; a finished product is obtained through post-treatment grading and surface cleaning. Resource utilization of industrial solid waste is achieved, the strength and flow conductivity of the proppant are improved through raw material synergy, crystal structure regulation and control and surface microstructure design, preparation energy consumption is reduced, and the proppant is suitable for oil and gas field fracturing engineering.

The invention provides a civil engineering construction waste treatment device. The civil engineering construction waste treatment device comprises a supporting frame, a rotating cylinder, a material collecting cylinder, a crushing treatment box and a separation box. The invention relates to the technical field of construction waste treatment, the device is flexibly moved by moving crawler wheels, the field collection and treatment of construction waste are realized, the time of waste transportation and centralized treatment is reduced, and time and labor are saved; the shoveling hopper can stir the building waste into the material collecting barrel, the lifting electric push rod can drive the material collecting barrel to rotate upwards, the building waste slides to the rotating piece along the inner wall of the material collecting barrel, and slag is formed through the coarse crushing process of the coarse crushing roller. The rotating shaft drives the rotating piece to rotate, building waste subjected to coarse crushing is stirred into the crushing treatment box and subjected to fine crushing through the fine crushing roller to form disintegrating slag with the smaller size, the disintegrating slag is conveyed into the separation box through the conveying belt, and metal substances in the waste disintegrating slag are screened out through the magnetic adsorption effect of the permanent magnet iron removal roller; the technical effect that concrete and metal substances in the building waste are classified and recycled is achieved.

The application discloses a method for preparing auxiliary cementitious material and concrete products by carbonizing steel slag with industrial kiln tail gas, and steps are as follows: original steel slag is crushed, iron is removed, and screening is performed, so that a steel slag coarse-fine aggregate mixture and steel slag fine powder are obtained; the steel slag coarse-fine aggregate mixture is carbonized to obtain carbonized coarse aggregate and carbonized fine aggregate; the steel slag fine powder is ground to obtain steel slag micro-powder, the steel slag micro-powder is made into a cake to obtain a steel slag cake; the steel slag cake is subjected to carbonization treatment, and then is dried and ground to obtain a steel slag-based auxiliary cementitious material; the steel slag-based auxiliary cementitious material, silicate cement clinker powder and gypsum powder are mixed to obtain a new low-carbon cementitious material; the carbonized coarse aggregate, the carbonized fine aggregate, the new low-carbon cementitious material and sand are mixed and pressure-formed, and are subjected to carbonization treatment, so that a steel slag multi-stage carbonized product is obtained. The application effectively improves the carbonization rate and carbonization strength through the multi-stage carbonization technology, and avoids the occurrence of uneven carbonization caused by the fact that CO2 carbonization cannot reach the inside of particles.

A multifunctional construction site cleaning robot and a cleaning method using the same are provided. The robot includes a chassis part; a bottom rotatable function part, including a sweeper unit, an iron remover unit, a leaf remover unit and a cutter unit; a debris treatment part, including a compression unit, a debris container and a pulverizing unit; a container exchange part, including a movable gripper unit and openable containers, the openable containers being configured to contain sundries collected by the sweeper unit and the iron remover unit; a spray part, configured to prewet or dedust a construction site; and a water transfer part, including an extensible water discharging unit and an extensible water pumping unit, the extensible water discharging unit being configured to pump accumulated water, and the extensible water pumping unit being configured to pump accumulated water from a bottom of a pit to the ground.

The utility model discloses a ceramic mud stirring and iron removing device for industrial ceramics, and relates to the technical field of stirring and iron removing devices. The device comprises a treatment box, one side of the treatment box is provided with a lifting column, one side of the lifting column is fixedly connected with an iron attracting mechanism, the iron attracting mechanism comprises a mounting table, one side of the mounting table is rotationally connected with a driven gear, one side of the driven gear is fixedly connected with a magnetic bar, one side of the magnetic bar is fixedly connected with a guide rail, and the guide rail is fixedly connected with a motor. According to the utility model, the iron attracting mechanism is arranged, and the original vertically mounted magnetic bar is changed into the transversely mounted magnetic bar, so that the magnetic bar can be more fully contacted with the ceramic mud, iron impurities in the ceramic mud can be more effectively attracted, and the transversely mounted magnetic bar is matched with the scraper for use, so that the iron impurities in the ceramic mud can be more effectively removed. Coherent iron attraction and scraping operation is achieved, the scraping piece can scrape iron attracted to the magnetic bar in time, and it is guaranteed that the efficient attraction capacity of the magnetic bar is continuously kept.

The invention discloses a high-temperature-resistant inorganic antibacterial ceramic glaze and a preparation process, and relates to the technical field of ceramic glaze preparation, the glaze is composed of a basic glaze and a zinc oxide-doped cerium dioxide inorganic antibacterial agent, and the basic glaze comprises feldspar, quartz, kaolin, calcite and talc. The preparation process comprises the following steps: mixing the raw materials, carrying out wet ball milling, adding the antibacterial agent and the dispergator, stirring at a high speed, sieving to remove iron, aging, glazing and sintering at a high temperature. In the process, an iron removal integrated unit integrating a two-stage vibration screening function and an automatic iron scraping function is adopted, and efficient and continuous iron removal operation is achieved. The obtained glaze can resist high-temperature sintering of 1150-1200 DEG C, the glaze surface is smooth and uniform, the glaze surface has lasting and efficient broad-spectrum antibacterial performance, glaze surface defects caused by iron impurities are effectively avoided, and the product yield and quality stability are improved.

The present invention discloses an efficient and environmentally friendly recovery system for valuable metals from waste circuit boards. The environmental protection recovery system includes a waste circuit board disassembly and crushing device, a waste circuit board and copper concentrate mixed smelting device, and a smelting flue gas purification and recovery device. When using the recovery system of the present invention for recovery, first, the waste circuit boards are desnidered, crushed, copper wires removed, iron removed, and aluminum removed. The copper-containing waste circuit boards are extruded into small pieces of materials and mixed with copper concentrate in proportion, and then added to a large-volume smelting furnace, and smelted by spraying with an ultra-rich oxygen spray gun, so that the organic components in the waste circuit boards burn more thoroughly, avoiding the generation of harmful substances. At the same time, the flue gas temperature is higher, and the waste heat boiler can effectively recover the heat generated by the waste circuit boards. The combustion flue gas is recovered through the flue gas purification and recovery device, effectively solving the impact of waste circuit board combustion on sulfuric acid production from flue gas; the recovery system of the present invention is scientifically and reasonably designed and can be widely promoted and used.

The invention belongs to the field of lithium battery recycling, and particularly relates to a method for recycling lithium in lithium iron phosphate battery black powder. The method comprises the following steps: sieving the lithium iron phosphate battery black powder with a 200-mesh sieve, oxidizing the powder with oxygen for 20-40 minutes to obtain powder a; dry ball milling: weighing phosphoric acid salt of sodium, the powder a and potassium superphosphate, mixing, and carrying out dry milling for 2-3 hours to obtain powder b; iron removal: dissolving the powder b subjected to dry grinding in water, and filtering to obtain a solid phase a and filtrate a; adding 0.1-0.3 wt.% of alkali into the filtrate a, and filtering to obtain filtrate b; leaching out lithium; adding an aqueous solution of saturated soluble carbonate into the filtrate b obtained in the step S3, heating and concentrating, and filtering while hot; washing and enriching; and washing with hot water, filtering, and collecting a solid phase to complete lithium recovery. According to the method, lithium ions are replaced through potassium ions and sodium ions, mechanical ball milling and the oxidation effect of persulfate are matched, lithium is leached in a synergistic mode, corrosion to equipment is small, and meanwhile the leaching rate of lithium can reach 98% or above.

The invention discloses a fine beneficiation method for stage grinding and stage tailing discarding of low-grade chromium ore, which comprises the following steps: first-stage ball-milling grinding, first-stage screening classification, first-stage hydrocyclone classification, second-stage hydrocyclone desliming, spiral chute reselection roughing, spiral chute reselection scavenging and spiral chute reselection concentration. Hydrocyclone security classification, middling concentration, fluidized bed reselection, second-stage pre-screening inspection classification, second-stage ball-milling ore grinding, magnetic separation iron removal, table reselection, spiral chute reselection concentrated concentrate and table reselection concentrate are combined and then fed into a belt filter to be filtered, and the Cr2O3 grade is larger than or equal to 50%, the Cr / Fe ratio is larger than or equal to 2.2, and the moisture lt is obtained; and 12.0% of final qualified chromium concentrate is obtained. According to the method, separation and enrichment of the chromium concentrates with different particle sizes are achieved through step-by-step fine separation of stage grinding, stage tailing discarding and advanced concentrate obtaining, the grade and the recovery rate of the chromium concentrates are remarkably improved, and the method has the advantages of being reliable in technological process, stable in product quality, low in comprehensive energy consumption and the like.

The invention relates to the technical field of waste mulching film treatment, in particular to waste mulching film treatment heavy residue separation equipment which comprises a separation box, a conveyor is installed at the front end of the separation box, a feeding hopper is fixedly connected to the front end of the top of the separation box, and a material distribution square box is fixedly connected to the outer side of the separation box. A cyclone dust collector is installed at the rear end of the separation box, the top of the material separation square box is fixedly connected with the cyclone dust collector through a connecting pipe, a centrifugal fan is fixedly installed at the top of the cyclone dust collector, multiple functions of iron removal, smashing, screening, centrifuging, flapping, winnowing, dust removal and the like are integrated, the occupied area of the equipment and the material transfer link are reduced, and the production efficiency is improved. A complete, efficient, automatic and environment-friendly waste mulching film recycling solution is provided, the core innovation point is the composite motion design of the separation assembly and the automatic discharging design of the magnet assembly, the overall practicability is high, and very high market application value is achieved.

The invention discloses a method for preparing electrolytic manganese dioxide from low-grade manganese oxide ore, the electrolytic manganese dioxide and application of the electrolytic manganese dioxide, and belongs to the technical field of battery materials. The method comprises the steps that S1, the low-grade manganese oxide ore is subjected to two-stage countercurrent acid leaching, and a leaching solution is obtained; s2, adjusting the pH value of the leachate, synchronously introducing air, adding a flocculating agent, and settling to remove iron and aluminum; s3, heavy metal is deeply removed, calcium and magnesium are removed through manganese fluoride, and then an oxidizing agent is added for oxygenolysis of polysulfide; s4, anolyte generated in the electrolysis process is added into the purified solution, Mn < 2 + > is subjected to catalytic oxidation through a catalyst, and generated authigenic MnO2 adsorbs residual impurities; and S5, pulse on-off current and periodic reversing are adopted for electrolysis, cathode waste liquid is reused for the leaching procedure in the S1, and electrolytic manganese dioxide is obtained. The electrolytic manganese dioxide with high purity and excellent electrochemical performance is successfully prepared through the specific steps of acid leaching iron removal, heavy metal removal, oxidation reaction, electrolysis and the like.

The invention relates to the technical field of battery recovery, and particularly discloses a recovery method of waste lithium iron phosphate and a lithium ion secondary battery. The recovery method of the waste lithium iron phosphate comprises the following steps: leaching acid liquor, and carrying out solid-liquid separation to obtain acid leaching liquor and a regenerated negative electrode material; cooling and crystallizing, and carrying out solid-liquid separation to obtain first iron-removed slag and first iron-removed liquid; oxidizing, adjusting pH, removing iron, and carrying out solid-liquid separation to obtain second iron-removed slag and second iron-removed liquid; adjusting the pH to precipitate lithium phosphate, and carrying out solid-liquid separation to obtain first lithium phosphate slag and lithium precipitation mother liquor; adding a lithium source into the lithium precipitation mother solution, and carrying out solid-liquid separation after reaction to obtain second lithium phosphate slag and a phosphorus removal solution; and evaporating and concentrating the dephosphorized solution to obtain a by-product salt. By implementing the invention, the recovery of each useful component can be realized.

The utility model discloses a plastic particle iron removal machine which comprises a base, a supporting frame is fixed to the top of the base through bolts, an installation sleeve is fixed to the top of the supporting frame through bolts, a feeding mechanism is arranged on the top of the installation sleeve, and an iron removal mechanism is arranged on the side wall of the installation sleeve. The iron removal mechanism comprises a mounting box, a sliding table, a mounting sliding seat, a mounting shaft, a connecting support and a magnetic attraction block, a material stirring mechanism is arranged in the mounting box, a turnover mechanism is arranged on the side wall of the mounting box, and a cleaning mechanism is arranged on one side of the mounting box. Plastic particles are subjected to all-around iron removal and screening operation through the iron removal mechanism, the iron removal and screening operation quality is improved, a magnetic attraction block on the top is overturned to the bottom through the overturning mechanism, the magnetic attraction block is cleaned through the cleaning mechanism, automatic cleaning of the magnetic attraction block is achieved, and the production efficiency is improved. And the stability of the iron removal operation on the plastic particles after the magnetic attraction block is used for a long time is guaranteed, and the practicability and functionality of the iron removal machine are improved.

The invention provides a copper powder purification and iron removal control method based on multi-parameter monitoring, and belongs to the technical field of copper powder processing. The method comprises the following steps that basic information of copper powder to be treated is obtained, and the theoretical dosage Qall of acid liquor is calculated; stirring and mixing the copper powder and pure water; setting a preset batch number n of adding the acid liquor in batches, generating an addition amount Q1 of adding the acid liquor in the first batch and an addition amount Q2 of adding the acid liquor in the second batch, and setting the interval time as t1; monitoring parameters of the mixed system are obtained, and the adding process of the acid liquor in the next batch is dynamically adjusted; and repeating until the concentration of the iron ions in the mixed system tends to be constant, thereby completing iron purification and impurity removal. Accurate iron removal through an acid leaching method can be achieved, the corrosion loss of the copper powder is reduced, and the purity and yield of the copper powder are improved; meanwhile, the addition amount of the acid liquor is accurately controlled, and the subsequent wastewater treatment cost is reduced.

The invention relates to the technical field of welding and discloses full-automatic welding equipment and a welding method.The full-automatic welding equipment comprises a feeding system, the feeding system is linearly distributed and sequentially comprises an unwinding mechanism, a tension detection mechanism, three tension swing rod mechanisms, an advancing correction mechanism, a color code detection mechanism and an iron removal mechanism, and all the mechanisms are sequentially matched with the upper-stage output end; the welding system is connected with the terminal of the feeding system and comprises a welding mechanism and a sensing assembly, and the receiving system is connected with the output end of the welding mechanism. The continuous welding device has the beneficial effects that continuous welding of the composite current collector is achieved, the industry bottleneck problem is solved, low power is adopted for equipment, accurate control over tension during tape walking is guaranteed, wrinkling is prevented, alignment of foil and the current collector is guaranteed through a deviation rectifying system, it is guaranteed that a welding wire is flat and uniform, and burr piercing and contact short circuit can be effectively avoided.

The invention belongs to the technical field of metal material regeneration, and particularly relates to a secondary aluminum alloy multistage gradient iron removal method which comprises the following steps: pretreating waste aluminum to remove impurities on the surface of the waste aluminum; the method comprises the following steps: pretreating waste aluminum, placing the pretreated waste aluminum at 775-785 DEG C to form molten aluminum, and standing the molten aluminum to enable a crude iron phase with the particle size of more than 50 microns to sink; the temperature is controlled to be 715-725 DEG C, a composite iron removal agent is added, medium-fine iron phases with the particle size being 10-50 microns and low-density slag phases with the density being smaller than or equal to 4.8 g / cm < 3 > are adsorbed to float, and the composite iron removal agent is a mixture of Na2B4O7 and K2TiF6; and performing electromagnetic separation to complete iron removal. The method realizes efficient iron removal, is low in cost, environment-friendly and pollution-free, and does not introduce Mn / Cr and other impurities.

The invention provides an acid mine wastewater comprehensive treatment method, and belongs to the field of mine wastewater treatment.The method treats wastewater through three stages of iron removal pretreatment, replacement copper collection and neutralization treatment in sequence, firstly, the pH value of the wastewater is adjusted in an iron removal reaction tank for reaction, after solid-liquid separation, part of underflow flows back, and the rest enters a filter pressing system; then the liquid subjected to iron removal is guided into a copper recovery reaction tank, copper recovery is conducted through a reducing agent and an iron powder system, and underflow backflow and filter pressing treatment are conducted; and finally, adjusting the pH value of the liquid after copper collection in a neutralization reaction tank, oxidizing, carrying out solid-liquid separation and underflow reflux, and finally discharging after reaching the standard, thereby realizing deep purification of the acid mine wastewater. The slag generated by the method provided by the invention is common industrial solid waste, the environmental risk of waste slag stockpiling is reduced, the reaction efficiency is optimized through underflow reflux in the whole process, and efficient recovery of copper and stable standard treatment of wastewater are realized.

The preparation method comprises the following steps: mixing a lithium source, an iron source, a phosphorus source, a first carbon source and a first metal doping agent according to a preset proportion, carrying out primary high-temperature sintering, carrying out first-layer carbon coating and metal doping, and obtaining a primary sintered material; mixing the primary sintered material with a second carbon source and a second metal doping agent by a solid phase dry method, performing secondary sintering, performing secondary carbon coating and metal doping to obtain a target product, and finally crushing, sieving and deironing the target product to obtain the double-layer carbon-coated lithium iron phosphate material. A lithium source, an iron source, a phosphorus source, a carbon source and a metal doping agent are mixed and sintered by adopting a solid-phase mixing method and a simple carbon coating process to obtain a target product. The double-layer carbon-coated lithium iron phosphate material prepared by the method has high compaction density and high capacity, the coating uniformity of the carbon layer on the surface of the material is improved, and the conductivity is improved.

The invention belongs to the technical field of high-iron bauxite resource utilization, and discloses a method for removing iron in high-iron bauxite, which comprises the following steps: mixing and stirring high-iron bauxite, an iron removal agent and water to obtain mixed ore pulp; wherein the iron removal agent is a mixture of oxalic acid and oxalate; stirring and leaching the mixed ore pulp so as to carry out iron removal reaction; after the iron removal reaction is finished, liquid-solid separation is carried out, and leaching residues and leaching liquid are obtained; adjusting the pH value of the leachate, and stirring to carry out a reaction of precipitating iron and aluminum; after the precipitation reaction is finished, carrying out liquid-solid separation to obtain filter residues and filtrate containing oxalate; carrying out an aluminum removal reaction on the filter residue by using an aluminum removal agent, and after the aluminum removal reaction is finished, carrying out liquid-solid separation to obtain a ferric hydroxide precipitate and a sodium aluminate solution; according to the method, aluminum and iron in the aluminum-iron embedded structure in the high-iron bauxite are removed through wet preimpregnation, the adverse effect of iron oxide on aluminum mineral dissolution is eliminated, and the dissolution rate of the aluminum mineral is increased.

The utility model discloses a de-ironing separator, a de-ironing device and a battery production line, and relates to the technical field of battery production, the de-ironing separator comprises a tank body, a magnetic bar assembly, a driving assembly and a cleaning assembly, the tank body is provided with a de-ironing cavity and an opening communicated with the de-ironing cavity; the magnetic rod assembly comprises a cover body and a magnetic rod, the cover body covers the opening, and the magnetic rod is arranged on the side, facing the iron removal cavity, of the cover body; the driving assembly is connected with the magnetic rod assembly and used for driving the magnetic rod assembly to get close to or away from the tank so that the magnetic rod can get in and out of the iron removal cavity. The cleaning assembly comprises a cleaning module and a moving mechanism, the cleaning module comprises a cleaning sliding ring and a sealing ring arranged on the inner side of the cleaning sliding ring, the magnetic bar penetrates through the cleaning sliding ring and the sealing ring, the moving mechanism is used for driving the cleaning module to slide along the magnetic bar, and the cleaning sliding ring comprises two semi-ring structures spliced with each other; and the cleaning module is hooped on hooping pieces on the outer sides of the two semi-ring structures. According to the technical scheme, the cleaning convenience of the magnetic bar in the iron remover can be improved.

The invention relates to the technical field of magnetic separation, in particular to a roasting activation magnetic separation combined iron removal system which comprises a pretreatment module, a magnetic characteristic dynamic detection module, a magnetic field parameter self-adaptive matching module, a dynamic magnetic compensation module, a separation path optimization module and a cross-module cooperative control module. The sorting process is rehearsed through a virtual twinborn model, parameters are triggered to be reset synchronously, and particle agglomeration interference is restrained in combination with dynamic partition of a sorting cavity and a flexible electrode array. The modules achieve magnetic field dynamic adaptation, magnetic attenuation compensation and sorting path optimization through closed-loop cooperation, the problem that a static magnetic field is mismatched with non-uniform magnetic particles is effectively solved, and the medium magnetic particle capture efficiency, the iron element recovery rate and the concentrate grade are remarkably improved.

The invention provides a method for preparing a ceramic material from lithium slag obtained by extracting lithium through a spodumene acid method, and relates to the technical field of energy conservation and environmental protection. The method for preparing the ceramic material by extracting the lithium slag through the spodumene acid method comprises the following steps: S1, component analysis: carrying out comprehensive component analysis on the lithium slag; s2, magnetic separation iron removal: enabling the lithium slag to pass through a magnetic field by using a magnetic separator, so that magnetic iron impurities in the lithium slag are adsorbed and separated; s3, particle size adjustment is conducted, and mechanical equipment is adopted for conducting particle size grading and grinding treatment on the lithium slag; step S4, mixing and ball-milling: according to a preset formula proportion, adding the lithium slag, kaolin, feldspar, quartz and an additive into a ball mill in proportion, adding a proper amount of water, and carrying out ball-milling and mixing for 2-4 hours, so that the raw materials are fully and uniformly mixed to obtain uniform ceramic blank slurry; finally, the problems that the lithium slag is difficult to treat, the requirement for ceramic materials is large, the preparation cost is high and the performance needs to be improved are solved, and energy-saving and environment-friendly treatment and resource recycling of lithium slag resources are achieved.

The utility model discloses a particle size grading device for a non-Newtonian fluid soft rubber microsphere suspension. The device comprises particle size grading vibration equipment, a magnetic scrap iron removing device, a suction filtration barrel, a bag type filter, a storage tank front-back multi-stage centrifugal pump and a liquid storage tank, the multi-stage centrifugal pump behind the storage tank is connected with upper and lower diluent spraying pipelines; upper and lower screens are arranged in the particle size grading vibration equipment; the non-Newtonian fluid flexible glue microsphere suspension is diluted to form microsphere homogenate, the particle size grading vibration equipment performs grading filtration on the microsphere homogenate, the diluent is extracted from the liquid storage tank and conveyed to the upper and lower diluent spraying pipelines, and the spraying pipelines spray the screen; the large-particle-size microspheres remain on the upper-layer screen, the medium-particle-size microspheres remain on the lower-layer screen, homogenate containing the small-particle-size microspheres flows into the suction filtration barrel after passing through the magnetic scrap iron removal device, then enters the liquid storage tank after being subjected to impurity removal through the bag type filter, and circulation is carried out. Different target particle size distribution can be achieved by carrying out primary particle size grading on the non-Newtonian fluid soft rubber microsphere suspension.

The present application relates to the technical field of impurity removal and quality improvement of non-ferrous metals, and in particular to a method for decarbonization and iron removal of high-sulfur bauxite; the method comprises: crushing the high-sulfur bauxite and screening it with a preset particle size to obtain fine-grained high-sulfur bauxite; wet coarse grinding the fine-grained high-sulfur bauxite to obtain a coarse-ground slurry; adjusting the pH value of the coarse-ground slurry, and then adding a flotation agent to the coarse-ground slurry for flotation to obtain a desulfurized aluminum concentrate; finely grinding the desulfurized aluminum concentrate and performing strong magnetic separation to obtain a low-carbon and low-iron aluminum concentrate and a high-carbon and high-iron tailings, respectively; the flotation agent comprises an inhibitor, an activator, a composite desulfurization collector and a frother; the preset particle size is 6 mm to 9 mm; and adopts a "stage grinding-flotation magnetic combined stage separation technology" with the characteristics of low energy consumption, low production cost, high recovery rate, strong process adaptability, stable production, and high comprehensive utilization rate.