1963 results about "Iron removal" patented technology

A method for removing iron and aluminum from a lateritic nickel ore leachate by means of a goethite process, which method comprises the following steps: first-stage iron and aluminum removal, involving: adding a precipitant solution to a lateritic nickel ore leachate, reacting same for 45-90 minutes with the feeding speed controlled to be 5-80 mL / min, the pH controlled to be 3.0-3.2 and the reaction temperature controlled to be 60-70ºC, and performing solid-liquid separation, so as to obtain first-stage iron and aluminum residues and a filtrate; and second-stage iron and aluminum removal, involving: adding a precipitant solution to the filtrate, reacting same for 30-60 minutes with the pH controlled to be 4.3-4.4 and the reaction temperature controlled to be 60-70ºC, and performing solid-liquid separation, so as to obtain second-stage iron and aluminum residues and a purified liquid. Two-stage iron and aluminum removal is used; in the first stage, iron ions in the leachate are effectively separated at a relatively low pH value by controlling the feeding speed, generated residue particles are large, good filtering performance is achieved, and few valuable metals such as nickel, cobalt and manganese are entrained in the residues; in the second stage, the pH is adjusted to 4.3-4.4 to precipitate aluminum ions and the remaining iron ions; and the whole technological process is simple.

The invention discloses a method for recovering iron and titanium in vanadium titano-magnetite, and relates to the technical field of vanadium titano-magnetite beneficiation. Raw ore is crushed, and then is subjected to roller milling and screening to obtain oversize and undersize products; undersize products are subjected to weak magnetic pre-selection, tailings obtained after weak magnetic pre-selection and strong magnetic pre-selection are subjected to strong magnetic pre-selection, concentrate obtained after weak magnetic pre-selection and strong magnetic pre-selection are sequentially subjected to first-stage grinding, first-stage weak magnetic separation, second-stage grinding, second-stage weak magnetic separation and second-stage weak magnetic concentration, final iron ore concentrate is obtained, the obtained tailings are combined into iron separation tailings, then the iron separation tailings are subjected to titanium separation grinding, medium magnetic iron removal and strong magnetic roughing, and iron separation tailings are obtained. And tailings obtained after strong magnetic roughing are subjected to strong magnetic scavenging, concentrates obtained after strong magnetic roughing and strong magnetic scavenging are subjected to gravity roughing and gravity concentration, and final titanium concentrates are obtained. By adopting conventional crushing, high-pressure roller grinding, magnetic separation, pre-selection and tailing discarding, the subsequent ore grinding and selecting cost can be effectively reduced, the iron and titanium grades of the ore entering the grinding process are improved, high efficiency and energy conservation are achieved, and the ore dressing efficiency is improved.

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 discloses a lithium ion battery powder online iron removal airflow mixer and a mixed iron removal method. The online iron removal airflow mixer comprises a top cover arranged at the top of the feeding bin, a dust removal filter element mounting plate arranged in the feeding bin and a plurality of dust removal filter elements arranged on the dust removal filter element mounting plate, and the dust removal filter element mounting plate divides the inner space of the feeding bin into a feeding bin upper cavity and a feeding bin lower cavity; a synchronous mixing online iron removal device is also arranged; the synchronous mixing online iron removal device comprises a plurality of electromagnetic iron removal rods which are vertically arranged in the feeding bin at intervals and penetrate through the dust removal filter element mounting plate, and a lifting plate which is arranged in an upper cavity of the feeding bin and is fixedly connected with the upper ends of the electromagnetic iron removal rods; and the first linear execution element is arranged on the top cover cap and is connected with the lifting plate so as to realize up-down movement of the lifting plate and the electromagnetic iron removal rod. The lithium ion battery powder deironing effect and the mixing uniformity are improved, and the production efficiency is high.

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 relates to a method for driving impurity iron to enrich and purify aluminum alloy return scrap and a product, the aluminum alloy return scrap is placed in a crucible, is heated in a resistance furnace and is subjected to heat preservation for a period of time, so that the return scrap is fully molten, and a melt is obtained; continuously preserving the heat of the melt, connecting two parallel electrodes with a pulse power supply, vertically inserting the two parallel electrodes into the melt, and preheating for a period of time; setting a first pulse voltage, a first pulse current and a first pulse frequency according to the impurity iron content of the aluminum alloy return scrap; second pulse voltage, second pulse current and second pulse frequency are set according to different heat preservation temperatures during melt electric pulse treatment, and electric pulse treatment is applied to the melt for a period of time in the heat preservation stage; and closing the resistance furnace and the pulse power supply after treatment, and cooling the melt along with the furnace to obtain a sample. The method effectively solves the problem of malignant accumulation of impurity iron elements in the aluminum alloy resource recycling process. The method is short in treatment time and high in iron removal efficiency, and the production cost can be greatly reduced.

The invention discloses an aluminum oxide separation type impurity removal device with double iron removers, and particularly relates to the technical field of iron removal and impurity removal, the aluminum oxide separation type impurity removal device comprises a supporting frame, a material guiding and impurity removal assembly is arranged on the supporting frame, the material guiding and impurity removal assembly comprises an impurity removal bin arranged at the top of the supporting frame, and a top plate is clamped to the top of the impurity removal bin. Aluminum oxide in the aluminum oxide storage bin falls into the impurity removal bin and is borne by the reinforced impurity removal supporting rod, the conveying flow of the aluminum oxide is easy to control, the situation that the aluminum oxide is stacked together and consequently the impurity removal effect is poor is also avoided, impurities falling from the aluminum oxide can be extracted into the dust collection box to be stored, and the service life of the aluminum oxide is prolonged. A vibration motor is started to vibrate an extension plate and a supporting rod, then a spring is stressed, the amplitude is amplified, stubborn impurities on the aluminum oxide are shaken off, a discharging frame and a reinforced transfer box are blocked through displacement of a partition plate, and therefore the aluminum oxide is blocked, quantitative conveying is easy after impurity removal of the aluminum oxide is completed, and the practicability is high. And subsequent packaging and transportation are facilitated.

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 invention provides an aluminum alloy casting iron removal system and method.The aluminum alloy casting iron removal system comprises a smelting furnace used for smelting molten aluminum, and the smelting furnace is provided with a discharging opening; the conveying belt is arranged corresponding to the discharging opening, a plurality of crystallizers are arranged on the surface of the conveying belt in the conveying direction, and the crystallizers are used for receiving the molten aluminum discharged through the discharging opening; the cooling device is arranged at the tail end, in the conveying direction, of the conveying belt, the cooling device is used for cooling the crystallizer located at the tail end, and molten aluminum in the crystallizer can be cooled by the cooling device to form cast ingots; and the cutting device is arranged at the downstream of the conveying belt and is used for cutting the iron-rich phase deposition layer in the cast ingot. By means of the technical scheme, the problem that in the prior art, iron elements are difficult to separate from molten aluminum can be solved.

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 discloses a method for removing iron impurities in regenerated aluminum alloy, and belongs to the field of non-ferrous metal regeneration, recovery and impurity removal. The method comprises the following steps: weighing an iron removal flux (25-45 wt.% of boron-containing potassium fluoride, 20-30 wt.% of sodium chloride and 20-35 wt.% of potassium chloride) according to the mass percentage, stirring, mixing and drying; according to the method, the aluminum scrap is put into the smelting furnace to be smelted, then the iron removal flux and the permanganate catalyst are added into the aluminum scrap melt, stirring and standing are carried out, the aluminum melt with the iron impurity element removed is obtained, the method does not affect the aluminum obtaining rate, meanwhile, the iron content is remarkably reduced, and the method is applied to aluminum ingots obtained through green regeneration smelting of the aluminum scrap and has the beneficial effects that the cost is low; the environment is not damaged and the steps are simple.

The utility model provides a lithium battery material deironing machine, relates to deironing equipment technical field, including device body, a plurality of magnetic bar and drive mechanism, the inside of device body is provided with work chamber, work chamber passes through vertically set division plate and forms adsorption area and deironing area, on the division plate is provided with a plurality of first through-hole, a plurality of second through holes are formed in the two side faces, parallel to the partition plate, of the device body, magnetic bar scraping rings are arranged in the second through holes, the second through holes correspond to the first through holes one to one, a feeding port is formed in the top of the device body, and a discharging port and an iron discharging port are formed in the bottom of the device body. The adsorption area is communicated with the feeding port and the discharging port, the iron removing area is communicated with the iron discharging port, the multiple magnetic bars penetrate through the first through hole and the second through hole, and the driving mechanism drives the multiple magnetic bars to do reciprocating motion in the working cavity in the axial direction of the magnetic bars. According to the utility model, scrap iron adsorbed on the magnetic bar can be automatically removed, and the working efficiency is improved.

The invention discloses a method for recovering and separating nickel, cobalt and manganese from waste ternary lithium ion battery material lithium extraction slag, which comprises the following steps: pulping waste ternary battery material lithium extraction slag, leaching, introducing compressed air as an oxidant, and carrying out solid-liquid separation after leaching to obtain a leachate and leaching slag; sequentially performing copper removal, iron removal, aluminum removal and fluorine removal on the leachate to finally obtain fluorine-removed liquid; carrying out refined filtration on the fluorine-removed liquid to obtain a refined-filtered liquid; adjusting the pH value of the finely filtered liquid, and extracting impurities by using nickel soap P204 to obtain a rich organic phase and raffinate 1; extracting manganese from the raffinate 1 by using nickel soap P204 to obtain a manganese-rich organic phase and raffinate 2; extracting cobalt from the raffinate 2 by using nickel soap P507 to obtain a cobalt-rich organic phase and raffinate 3; and carrying out evaporative crystallization on the raffinate 3 to obtain nickel sulfate. The whole process has the advantages of short flow, high metal recovery rate, high product quality and low sodium-containing wastewater treatment capacity, and nickel, cobalt, manganese and lithium elements in the waste ternary lithium ion battery material are efficiently recycled by combining a front-end lithium extraction and recovery process, so that resource circulation is realized.

The present invention provides a machine vision-based anchor rod sorting and intelligent iron removal system for a chute ore-feeding machine, which relates to the field of image data processing and includes: an anchor rod sensing module, which is used to determine whether an anchor rod exists based on an ore-feeding machine image, magnetic field information, sound information and vibration information; a ore-feeding machine control module, which is used to control the ore-feeding machine to stop working after determining that an anchor rod exists; an intelligent iron removal module, which is used to determine anchor rod information based on the ore-feeding machine image, magnetic field information, sound information and vibration information, obtain a target area image, and determine whether an anchor rod exists based on the target area image, and after determining that an anchor rod exists, determine anchor rod sorting working parameters based on the target area image, and a collaborative robot performs anchor rod sorting according to the anchor rod sorting working parameters; the ore-feeding machine control module is also used to control the ore-feeding machine to continue working after determining that an anchor rod does not exist or the collaborative robot completes anchor rod sorting, and has the advantage of realizing automatic removal of anchor rods mixed in ore.

The utility model discloses a vibration type multi-stage solid waste garbage pretreatment screening device which comprises a box body, an iron removal cavity, a coarse material cavity and a fine material cavity are sequentially arranged in the box body from top to bottom, a vibration type partition plate is arranged between the iron removal cavity and the coarse material cavity, a material leakage opening is formed in the middle of the partition plate, a liftable iron attraction mechanism is erected above the iron removal cavity, and the fine material cavity is arranged in the middle of the partition plate. A screening mechanism is arranged between the iron removal cavity and the coarse material cavity, the screening mechanism comprises a vibration type filtering filter plate, one end of the filter plate is provided with a pushing and scraping assembly used for discharging of the coarse material cavity, the other end of the filter plate is provided with a slag discharging pipe, and the bottom end of the fine material cavity is provided with a discharging pipe. Through the structural design that the iron removal cavity, the coarse material cavity and the fine material cavity are vertically distributed in space, all stages of sorting are completed, meanwhile, the occupied space is small, iron in garbage can be directly sucked out, and the iron removal speed and efficiency are guaranteed; and large garbage can be scraped, output and collected, screening is convenient and fast, manpower is saved, and the processing and screening progress is greatly accelerated.

The invention discloses a co-processing and comprehensive utilization method for solid hazardous waste in the aluminum industry, and belongs to the technical field of industrial solid waste utilization, the method comprises the following steps: S1, roasting reduction process: uniformly mixing high-iron red mud, aluminum ash, cathode carbon blocks and an active additive, carrying out first-stage dry ball milling, and feeding a ball milling material into reduction roasting equipment for roasting; s2, an iron removal process is conducted, specifically, a reduction roasting product is subjected to second-stage wet ball milling again, slurry obtained after ball milling is subjected to wet reselection desliming, and iron ore concentrate, dehydration liquid and aluminum-silicon slag are obtained through magnetic separation; and S3, a poly-aluminum preparation process: mixing and reacting the silicon-aluminum slag, the aluminum-containing filtrate and hydrochloric acid to further prepare poly-aluminum ferric chloride, and recycling the poly-aluminum slag and the desliming slag to be used in the industries of brick making, cement building materials and the like. Meanwhile, high-added-value products such as iron ore concentrate and polyaluminum ferric chloride are produced as byproducts.

The invention relates to the technical field of raw coal impurity removal, and particularly provides a raw coal impurity removal anti-blocking device. By arranging the feeding primary screening mechanism, coal powder is filtered out through a flow guide plate, and by arranging a first-stage material uniformizing device and a second-stage material uniformizing device, coal can be evenly dispersed, and the phenomenon that the device is blocked due to accumulation of the coal is prevented; the belt type iron removal mechanism is additionally arranged, metal impurities in raw coal are adsorbed through the magnetism of an electromagnet, and the discharging quality of coal is guaranteed; the grate type screening unit is additionally arranged, so that coal briquettes with small sizes can smoothly fall into a stock bin below through gaps between swing rods, and impurities such as stones with large sizes are temporarily intercepted on the swing rods and wait for follow-up rotary throwing treatment of the rotary roller claw type screening unit; and a rotating roller claw type screening unit is arranged, a first gear motor and a cam divider are used for providing power, a claw is intermittently driven to rotate, and large sundries can be thrown into a sundry recycling box.

The invention relates to a beneficiation method for recovering fine-fraction cassiterite from table tailings, and belongs to the technical field of beneficiation. The method comprises the following steps: (1) concentrating by a thickener; (2) grading operation of a cyclone; (3) desliming treatment; (4) flotation desulfurization; (5) magnetic separation iron removal operation; (6) hydrocyclone concentration operation: feeding the iron-removed tailings into a concentration hydrocyclone for concentration to obtain hydrocyclone settled sand and hydrocyclone overflow; and (7) cassiterite flotation operation. According to the method, for fine-fraction cassiterite which is uneven in cassiterite dissemination particle size, poor in monomer dissociation degree and high in iron, sulfur and mud, the technical indexes that the fine tin grade is larger than 35%, the tin-rich middling grade is larger than 2.5%, and the comprehensive tin recovery rate is larger than 65% can be obtained.

The invention provides a magnetic rod module for slurry iron removal and separation equipment. The magnetic rod module comprises a plurality of magnetic rods mounted on a lifting frame; the bracket assembly is provided with a plurality of penetrating parts corresponding to the magnetic bars, a spring bolt is arranged at the bottom of the lifting frame, and a clamping structure is installed at the top of the bracket assembly and used for clamping and locking the spring bolt; the clamping structure can unlock the lock tongue through adjustment, and the lifting frame can be separated from the bracket assembly through an external structure, so that the structure is more compact, the magnetic attraction range is expanded, and the iron removal treatment capacity is increased; the provided separation equipment comprises a flushing tank, a water supply device and an alignment clamping device, the aligning and clamping device is mounted at the top of the flushing tank and is used for aligning, clamping and unlocking the magnetic bar module placed at the top of the flushing tank; the water supply device supplies water to the water cavity in the bracket assembly, high-pressure water flow is sprayed out through the water spraying opening, and therefore the high-pressure washing effect on the magnetic bar is achieved, and the iron removal efficiency and quality are improved through the double cleaning action.

The invention discloses a low-cost regenerative converter slag-stopping sliding plate brick and a preparation method thereof, and belongs to the technical field of refractory materials, the sliding plate brick comprises the following components by mass percentage: 59-62% of modified aluminum-zirconium-carbon regenerated material particles, 1-5% of silicon carbide particles, 35-40% of co-grinding powder, the total percentage being 100%, and 3.5-4.5% of additional phenolic resin. According to the low-cost regenerative sliding plate brick for converter slag stopping and the preparation method, the sliding plate brick is recycled after being used, aluminum-zirconium-carbon particles are obtained through the processes of sorting, iron removal, crushing, acid pickling, drying and the like, then the aluminum-zirconium-carbon particles are modified through metal aluminum to obtain modified aluminum-zirconium-carbon particles, and the modified aluminum-zirconium-carbon particles are of a matrix structure wrapping metal aluminum powder layer by layer; the prepared sliding plate brick is excellent in high-temperature performance and corrosion resistance, and the problems that in the prior art, a sliding plate brick for slag stopping is rapid in cast hole reaming, chipping and serious in corrosion are solved.

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 utility model discloses a magnetic bar cleaning device and slurry deironing equipment, the magnetic bar cleaning device comprises a mounting seat and a scraping head, the mounting seat is provided with a mounting hole extending along the vertical direction, the side wall of the mounting seat is provided with an air supply channel, the air supply channel is communicated with the mounting hole, the scraping head is arranged in the mounting hole, the scraping head is provided with an iron scraping hole for a magnetic bar to pass through, and the iron scraping hole is communicated with the mounting hole. The scraping head extends in the vertical direction so as to form a blowing channel for gas flowing with the mounting base, the blowing channel is used for guiding gas in the gas supply channel to conduct blowing iron removal on the magnetic bar, the scraping head is arranged so that iron removal can be conducted on the magnetic bar in the iron scraping hole, meanwhile, the gas supply channel is arranged so that gas can be supplied to the mounting hole, and under guiding of the scraping head, iron removal can be conducted on the magnetic bar. And the air can purge impurities such as scrap iron at the bottom of the magnetic bar, the impurities are prevented from being attached to a cleaning dead zone at the bottom of the magnetic bar, and therefore the problem that an existing magnetic bar cleaning device cannot clean the bottom of the magnetic bar is solved.

The invention discloses rubber separation treatment equipment for waste rubber recovery and a use method of the rubber separation treatment equipment. The rubber separation treatment equipment comprises a feeding bin, and the interior of the feeding bin is rotationally connected with a smashing roller; a bottom plate; an iron removal mechanism and a cleaning mechanism are arranged at the bottom of the feeding bin, a collecting mechanism used for containing separated iron wires is arranged in the iron removal mechanism, and a driving mechanism and a switching mechanism are arranged at the bottom of the iron removal mechanism; a connecting mechanism is arranged at the top of the cleaning mechanism, a locking mechanism is arranged at the bottom of the iron removal mechanism, and a positioning mechanism is arranged on the side portion of the locking mechanism. By means of the arrangement mode that the upper cylinder body, the connecting cylinder, the lower cylinder body, the supporting table, the driving motor and the connecting mechanism are matched, the upper cylinder body receives waste rubber subjected to secondary crushing, meanwhile, the connecting mechanism enables a baffle to shield the interior of the upper cylinder body, cleaning operation is facilitated after the waste rubber is subjected to secondary crushing, and the working efficiency is improved. And residual particle impurities in the waste rubber can be conveniently separated.

The utility model discloses an iron removal device suitable for a belt conveyor. The iron removal device comprises a support, a distance measuring part, an iron removal part and a control assembly, the support is located above the belt, and the distance measuring part is arranged at the upstream position of the iron removing part according to the running direction of the belt. The iron removal part consists of a lifting assembly connected with the bracket and a magnet; the control assembly is composed of a CPU and a control circuit, the signal output end of the distance measuring part is connected with the input end of the CPU, the output end of the CPU is sequentially connected with a triode amplifying circuit and a relay, and the lifting assembly is connected and controlled through the relay. The utility model has the characteristics of good reliability and high safety.

The invention provides a comprehensive treatment method for gold-copper-containing smelting wastewater, and belongs to the technical field of wastewater treatment. The method comprises the following steps: adding reduced iron powder into the gold-containing copper smelting wastewater, and fully reacting to obtain an iron powder replacement turbid solution; a first pH value regulator is added into the iron powder replacement turbid solution, an oxidizing agent is added after the pH value is regulated, and an iron-removed turbid solution is obtained after full reaction; adding a flocculating agent into the iron-removed turbid liquid, fully flocculating, and carrying out solid-liquid separation to obtain iron-removed underflow and iron-removed overflow; carrying out filter pressing dehydration treatment on the iron-removed underflow to obtain gold-copper slag and filter pressing liquid; and mixing the iron-removed overflow and the press filtrate, adding a second pH value regulator, and fully reacting after regulating the pH value to obtain a neutralized turbid solution. By means of the mode, valuable substances are effectively recycled, meanwhile, harmful metal ions in the wastewater are prevented from affecting a production system or the ecological environment, hazardous waste is not generated in the whole process, and unification of environmental benefits and economic benefits is achieved.

The electromagnetic iron remover comprises a supporting frame, an electromagnetic block is arranged at the top of the supporting frame, an impurity removal channel for materials to pass through is formed in the electromagnetic block, a quantitative feeding mechanism communicating with the impurity removal channel is arranged at the top of the electromagnetic block, and a detection bin communicating with the impurity removal channel is arranged at the bottom of the electromagnetic block; a baffle valve is arranged at the bottom of the detection bin, a metal detector is arranged in the detection bin and electrically connected with a controller, a discharging bin is connected to the bottom of the detection bin, a first material pipe, a second material pipe and a slag discharging pipe which are distributed in an annular array are connected to the bottom of the discharging bin at the same time, and the first material pipe is used for discharging materials with impurities reaching the standard; the first material pipe is used for discharging materials with impurities not reaching the standard, the second material pipe is used for discharging materials with impurities not reaching the standard, the slag discharging pipe is used for discharging metal impurities, a pipe opening switching mechanism is further arranged at the bottom of the discharging bin, and the pipe opening switching mechanism is used for only opening any pipe opening of the first material pipe, the second material pipe and the slag discharging pipe.

The utility model discloses a processing device for pet additive premixed feed, which comprises a feeding module and an iron removal module, the feeding module comprises a mixing barrel, a barrel cover movably sleeved on the top of the mixing barrel, and two cylinders connected between the mixing barrel and the barrel cover. According to the feed and additive mixing device, the first material pumping machine and the motor are started, the motor drives the rubber roller to rotate, then the rubber roller enables the balls to roll by means of friction force, then the filter cylinder moves in the mixing barrel with the help of the multiple grinding wheels, feed and additives are ground in the process, and then the ground mixture is continuously pumped into the filter cylinder by the first material pumping machine; and then the C-shaped magnet adsorbs scrap iron in the crushed materials, then the second material pumping machine pipe pumps away the screened mixture, the screened mixture is sprayed out of the two discharging pipes, and then the motor, the first material pumping machine and the second material pumping machine work all the time to complete cleaning of the scrap iron as much as possible.

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 relates to a hematite iron removal method for an iron-containing sulfate solution, which comprises the following steps: providing an iron removal device which comprises N vertical reaction kettles and a horizontal reaction kettle, and connecting the discharge ports of the N vertical reaction kettles to the feed port of the horizontal reaction kettle in parallel; n is an integer greater than or equal to 2; inputting the iron-containing sulfate solution into part of the vertical reaction kettle, inputting steam and oxygen into the vertical reaction kettle, and carrying out first iron removal treatment in the vertical reaction kettle to obtain first iron-removed slurry; the iron removal efficiency in the first iron removal treatment period is 16-24 kg.m <-3 >. H <-1 >; inputting the first iron-removed slurry into a horizontal reaction kettle, inputting steam and oxygen into the horizontal reaction kettle, and carrying out second iron removal treatment in the horizontal reaction kettle to obtain second iron-removed slurry; wherein the time in the second iron removal treatment period is 5-7 kg.m <-3 >. H <-1 >. According to the invention, continuous feeding and continuous discharging type continuous treatment of the iron-containing sulfate solution can be realized, the iron removal efficiency is effectively improved, and a good iron removal effect is ensured.