43 results about "Siderite" patented technology

The invention discloses a beneficiation method of refractory iron ore with symbiotic hematite, limonite and siderite, which comprises the following steps of: crushing weakly magnetic refractory iron ore to below 100mm in a closed circuit, then sequentially carrying out three times of dry screening to obtain four particle fractions of 0-6mm, 6-15mm, 15-40mm and 40-100mm, pre-selecting the particle fractions of 6-15mm by adopting a dry high-intensity magnetic separator, pre-selecting the particle fractions of 15-40mm by adopting a chunk jigger, pre-selecting the particle fractions of 40-100mm by adopting a photoelectric intelligent separator, and pre-selecting the particle fractions of 40-100mm by adopting a high-intensity magnetic separator; photoelectric intelligent pre-selected concentrate is crushed to 0-40 mm through a fine crushing closed circuit, then jigging pre-selected concentrate is combined, then the photoelectric intelligent pre-selected concentrate is crushed to 0-6 mm through an ultra-fine crushing closed circuit, an ultra-fine crushing product is combined with the 0-6 mm fraction, then wet type strong magnetic pre-selection is conducted through a coarse grain wet type strong magnetic separator, the pre-selected concentrate is subjected to ore grinding-fine grain wet type strong magnetic one-coarse one-scavenging one-coarse one-scavenging one-fine one-scavenging reverse flotation, and the final concentrate is obtained. And final concentrate is obtained. The invention has the advantages of large raw ore selection granularity, large tailing discarding amount, low energy consumption, good separation effect and the like.

The invention discloses a sulfur iron oxide composite denitrification filler, a preparation method and application, and relates to the technical field of sewage treatment, the sulfur iron oxide composite denitrification filler comprises sulfur powder, siderite, magnesite, magnesium oxide, metal manganese, metal aluminum, nano iron, boric sludge, magnetite and a binder; wherein the sum of the addition amounts of the metal manganese, the metal aluminum and the nano iron accounts for 8-16% of the mass of the sulfur-iron oxide composite denitrification filler. The technical problems that in the prior art, strength and abrasion resistance are insufficient, and denitrification efficiency is low are solved.

The invention discloses a method for preparing a battery-grade ferrous dihydrogen phosphate solution through co-impregnation of ferrophosphorus slag and siderite and recovering copper / graphite. The method comprises the following steps: carrying out reduction leaching on raw materials including ferrophosphorus slag, siderite and elemental iron by taking phosphoric acid as a leaching agent, and carrying out solid-liquid separation to obtain a battery-grade ferrous dihydrogen phosphate solution and leaching slag; and the leached residues are subjected to size mixing and then subjected to graphite flotation separation, and copper-rich tailings and graphite concentrate are obtained. According to the method, through the synergistic effect of the ferrophosphorus slag and the siderite, phosphoric acid with weak acidity is adopted as the leaching agent, valuable components in the ferrophosphorus slag and the siderite can be selectively recycled, the battery-grade ferrous dihydrogen phosphate liquid can be obtained, meanwhile, graphite and copper components in the battery-grade ferrous dihydrogen phosphate liquid can be efficiently recycled, the process is simple, the cost is low, and the method is suitable for industrial production.

The invention belongs to the technical field of heavy metal pollution treatment, and particularly relates to a cadmium-polluted soil remediation agent and a cadmium-polluted soil remediation method. The cadmium-polluted soil remediation agent disclosed by the invention is prepared from 29.4 to 32.5 parts by mass of catalytic weathered siderite powder and 67.5 to 70.6 parts by mass of limestone powder, the catalytically-weathered siderite powder is prepared through the method comprising the following steps that a mixture composed of ferrous chloride, siderite powder and water is granulated, granules are obtained, the granules are subjected to sealed standing for 6-24 h, and the catalytically-weathered siderite powder is obtained; the mass ratio of the ferrous chloride to the siderite powder is (7.04-7.89): (2.11-2.96), and the mass of the water is 5-10% of the total mass of the ferrous chloride and the siderite powder. The cadmium-contaminated soil remediation agent disclosed by the invention has a good and long-acting remediation effect on cadmium-contaminated soil.

The invention relates to a CeOx quantum dot-iron ore composite material and a preparation method and application thereof, and relates to the technical field of wastewater treatment, and the CeOx quantum dot-iron ore composite material comprises cheap natural siderite as a matrix and CeOx quantum dots loaded on the matrix through a precipitation-roasting method. According to the invention, the CeOx quantum dots are strong in dispersity and good in stability; the composite material has variable valence Ce (IV) / Ce (III) species, so that oxidation detoxification of Fe (III) on Sb (III) is realized; compared with pure siderite, the composite material has a larger effective contact area and more oxidation adsorption points, and the oxidation adsorption effect of siderite on Sb (III) is greatly improved. In conclusion, the composite material disclosed by the invention not only can effectively oxidize and detoxify Sb (III), but also can thoroughly and completely remove Sb (III) from water, so that the aim of thoroughly treating antimony-containing wastewater by using cheap minerals is fulfilled, and the composite material has the advantages of low cost, high efficiency and the like, thereby having a good application prospect.

This invention provides a self-trophic denitrification filter media with anti-scaling function and its preparation method. The filter media uses sulfur, magnesite, and a microporous carrier as its main components, supplemented with soluble salts for continuous pore formation, forming a highly efficient self-trophic denitrification filter media with anti-scaling function. This filter media overcomes the problem of scale formation and reduced efficiency when treating high-concentration nitrate wastewater, which is often caused by conventional methods using calcium carbonate as a neutralizing agent. It also overcomes the problems of slow reaction rates and poor filter media activity caused by the inability of filter media prepared using magnesite or siderite to neutralize the generated acid in a timely manner.

This invention discloses an apparatus and process for removing sulfur dioxide from flue gas using siderite slurry, relating to the field of environmental protection technology. The apparatus comprises six major components: desulfurization, slurry circulation, slurry replenishment, oxidation, defoaming emission, and spent slurry treatment. The components are interconnected by pipelines. The process includes siderite pretreatment slurry preparation, slurry replenishment, flue gas desulfurization, sulfite oxidation, flue gas defoaming emission, and spent slurry treatment. Siderite is crushed and ground into a slurry with a specific particle size and solids content, which is then contacted countercurrently with sulfur-containing flue gas. Utilizing ferric carbonate, magnesium carbonate, and calcium carbonate in the slurry as desulfurizing agents, combined with the oxidation effect of air and ferric ions, sulfur dioxide is converted into ferric sulfate and calcium sulfate, achieving desulfurization. This invention has high desulfurization efficiency, with the sulfur dioxide content in the purified flue gas below 50 mg / Nm³. 3 It makes full use of low-grade siderite resources, and the desulfurization by-products can be utilized as resources. The process is simple and has no secondary pollution, resulting in significant economic and environmental benefits.

The present application relates to the technical field of mineral processing, and provides a siderite directional enrichment and separation integrated process, which comprises the following steps: ore pretreatment, ore slurry directional dispersion and selective flocculation regulation, batch flotation separation, product refining and wastewater recycling four links, each link is accurately matched based on mineral surface electrical property and adsorption characteristic parameters, the iron element grade of siderite after flotation can be increased by more than 15%, the highest recovery rate can reach 76.70%, the iron grade can be increased to 59.90% at most, the high-value recovery of low-grade multi-element symbiotic siderite is realized, and the tailing discharge amount is reduced by 15%; the wastewater is closed-loop recycled without external discharge, and the first-level requirement of the comprehensive wastewater discharge standard is met.

A preparation method of vanadium-titanium pellets comprises the following steps: a) siderite is screened and classified, and the part smaller than 6 mm is subjected to fine grinding treatment, so that the siderite subjected to fine grinding is obtained; b) mixing the finely ground siderite obtained in the step a) with vanadium-titanium concentrate and bentonite, and pelletizing to obtain green pellets with the pellet fraction of 8-16mm; and c) distributing the green pellets with the pellet fraction of 8-16 mm obtained in the step b), drying, preheating, roasting and cooling in sequence to obtain the vanadium-titanium pellets. Compared with the prior art, the preparation method of the vanadium-titanium pellets provided by the invention has the advantages that siderite is introduced as a raw material for graded preparation, and overall better interaction is realized through specific process steps and conditions, so that a good pore channel can be formed during preheating and roasting of the pellets produced by fine-fraction high-titanium vanadium-titanium magnetite; uniform oxidation in the preheating and roasting process is guaranteed, the compressive strength of the pellets is improved, cheap siderite resources can be effectively utilized, and the production cost is reduced.

The invention discloses a preparation method of planting soil based on magnesite tailings. The preparation method comprises the following steps: (a) selecting the magnesite tailings of a waste strip mine pit as a main body of composite soil; (b) selecting perlite, chicken manure, rice husks and coco coir as soil conditioners; (c) selecting polyacrylamide for sewage purification as an additive; and (d) mixing 65% by weight of the magnesite tailings, 5% by weight of perlite, 9% by weight of chicken manure, 9% by weight of rice husk, 9% by weight of coco coir and 3% by weight of polyacrylamide, and uniformly stirring to obtain the planting soil. According to the method, the planting soil is prepared by taking the magnesite tailings as a main body, so that the problems of land resource occupation and environment pollution caused by massive stacking of the magnesite tailings are solved, resource utilization of the tailings is realized, waste is turned into wealth, and the effective utilization rate of resources is increased; and meanwhile, a new method is provided for relieving the burden of mine pit treatment and recycling the waste magnesite tailings in the mining area.

The invention relates to the technical field of liquid fertilizers, and discloses a multi-element organic acid ore liquid fertilizer and a preparation method thereof.The multi-element organic acid ore liquid fertilizer is prepared from, by weight, 5-7 parts of wood vinegar, 0.5-2 parts of magnesite and 0.5-2 parts of smithsonite, the additive comprises the following components in parts by weight: 0.5-1 part of rhodochrosite, 0.5-1 part of calcium molybdate ore, 0.5-2 parts of boracite, 0-1 part of chalcopyrite, 0-1 part of siderite and a chelating agent. Medium and trace elements in the mineral powder are dissolved out through the organic acid wood vinegar, the water-soluble fertilizer is directly prepared, the cost is low, the energy consumption is low, implementation is convenient, the requirement for the grade of the mineral powder is low, even the more non-heavy metal impurities are, the higher the cost performance of the technology is, meanwhile, the byproduct wood vinegar obtained by cracking biochar through straw and other waste is well utilized, and the environment-friendly effect is achieved. According to the process, the acidity of the pyroligneous liquor is neutralized by the mineral powder, the use safety of the pyroligneous liquor is improved, and the process is also very friendly to plants, soil and environment.

The invention discloses an iron oxide ore combined collecting agent and application thereof, and belongs to the technical field of mineral flotation. According to the combined collecting agent, a multi-element mixed coordination field is constructed through dihydroxamic acid and oximido, a stable composite adsorption layer is formed, and meanwhile, a dense hydrophobic layer is constructed on the surface of a mineral through the hydrophobic synergistic effect of a flexible aliphatic chain and a rigid benzene ring. The application of the combined collecting agent in iron oxide ore flotation comprises the steps that after iron oxide ore is smashed and subjected to size mixing, the combined collecting agent and a foaming agent are added, an oxidizing agent can also be added, and concentrate is obtained after air inflation flotation. The combined collecting agent can achieve efficient flotation of ilmenite, hematite and siderite under the mild condition, and has the advantages of being good in selectivity, high in recovery rate, small in dosage and environmentally friendly.

The present application belongs to the technical field of water treatment materials. More specifically, it relates to a processing method of mineral-based multi-electron donor autotrophic denitrification particles. The specific processing steps of the present application include: uniformly mixing ferrous vitriol and autotrophic microbial bacteria suspension, centrifugal separation, obtaining denitrification self-activation precursor; adding the denitrification self-activation precursor into a sodium alginate solution, uniformly stirring and mixing, then transferring into a mold, solidifying into a colloid; soaking the colloid in a calcium chloride solution for cross-linking reaction, cold storage solidification, obtaining denitrification self-activation agent; mixing cement, pyrite, siderite, steel slag, medium-coarse sand, sodium bicarbonate and the denitrification self-activation agent, then adding a mixed solution, and granulating through a granulator, obtaining particle materials; placing the particle materials at room temperature, spraying an anionic surfactant solution on the surface of the particle materials; after the end of the static placement, drying the particle materials, and the mineral-based multi-electron donor autotrophic denitrification particles are obtained.

This invention discloses an autotrophic denitrification composite packing material, its preparation method, and its application, belonging to the field of wastewater denitrification technology. The composite packing material disclosed in this invention comprises 40%-70% sulfur, 2%-20% pyrite, 2%-20% siderite, 10%-50% limestone, 3%-20% maifanite, and 1%-3% binder. Its preparation method is as follows: S1. Batching; S2. Raw material crushing; S3. After the crushed sulfur, pyrite, siderite, limestone, and maifanite are mixed evenly, the binder is added, and the mixture is thoroughly mixed to obtain a thickened substance; S4. Granulation. The prepared round granular autotrophic denitrification composite packing material can be widely used in wastewater treatment, featuring high autotrophic denitrification efficiency and strong resistance to shock loads, and can provide a suitable acid-base environment for the growth and reproduction of autotrophic denitrifying bacteria.

The invention discloses a sulfur-iron coupled autotrophic denitrification filler and a preparation method thereof, and belongs to the technical field of sewage treatment. Titanium dioxide and hydroxyapatite are mixed to obtain a reinforcing agent, the reinforcing agent is compounded with sulfur, siderite and activated carbon, and finally the sulfur-iron coupled autotrophic denitrification filler is obtained. An SEM image shows that the sulfur-iron coupled autotrophic denitrification filler has a clearly visible porous structure and a crystal structure, the porous structure enables microorganisms to be attached to the surface of the filler more easily, and the crystal structure is siderite, so that the fluctuation of pH in the environment can be effectively reduced in the reaction process, and the adsorption capacity of the sulfur-iron coupled autotrophic denitrification filler is improved. And iron ions can be released to remove phosphate in water. By adding the reinforcing agent composed of titanium dioxide and hydroxyapatite, the removal effect of NO3-N or PO4 < 3-P > can be remarkably improved, in a 30-day reactor test, the effective nitrogen removal time is 711h, the effective nitrogen removal time is 683h, the requirements of sewage treatment are met, and the filler can be popularized as a novel filler.

The present application relates to a kind of sulfur autotrophic denitrification fillings and its preparation method, belong to the sulfur autotrophic denitrification technical field of river and lake ecological management field, including mass ratio 1:1.2:0.2:0.1:0.01 of A component, B component, C component, D component, E component, the A component includes mass ratio 5:3:1:1 of sulfur powder, siderite powder, thiosulfate and active clay;The B component is alginic acid propylene glycol ester aqueous solution;The C component is the mixture of binder and volatile agent with mass ratio 5:2;The D component is hydrogen sulfide remover, neutralizing agent and digestion agent with mass ratio 5:3:2;The E component is denitrifying sulfur bacteria.The present application is a kind of low-cost treatment technology for sulfur autotrophic denitrification, and biological can use sulfate in water to complete denitrification by itself, without the support of external energy, can significantly reduce cost.

This invention discloses a flotation separation method for Fe / Ti impurities in coal-series kaolinite based on the impurity occurrence state, comprising the following steps: performing process mineralogical analysis on the raw coal-series kaolinite ore, and constructing single-mineral systems accordingly, including a kaolinite mineral system, an iron-bearing mineral system, and a titanium-bearing mineral system; conducting flotation tests and surface property tests on each constructed single mineral under different collector system conditions to obtain the differences in floatability and interfacial properties of each single mineral under different reagent conditions; and determining and implementing the raw ore flotation scheme. This invention, by constructing single-mineral flotation systems of kaolinite, siderite, and rutile, can establish the correspondence between different minerals and different collectors, providing a basis for determining the raw ore flotation scheme and flotation conditions, and improving the targeting of flotation separation.

The invention belongs to the technical field of oil and gas resource exploration, and discloses a method and a device for researching the influence of layered siderite on hydrocarbon generation effect, the method comprises the following steps: selecting a drilling well for revealing the development of siderite and hydrocarbon source rock in a research area, and carrying out core observation and description; establishing a siderite layer macroscopic logging earthquake identification template based on the logging response characteristics and the earthquake response characteristics; carrying out hydrocarbon source rock geochemical analysis on the shale sample close to the siderite development layer section, and carrying out a hydrocarbon generation thermal simulation experiment according to a geochemical analysis result; and analyzing the reaction mechanism of the siderite participating in hydrocarbon generation according to a hydrocarbon generation thermal simulation result. According to the method, the problem that the occurrence, color, development mode and the like of siderite accompanying with the hydrocarbon source rock in a layered manner are difficult to distinguish from the hydrocarbon source rock is solved, meanwhile, the action mechanism that the siderite affects the hydrocarbon source rock hydrocarbon generation process and the hydrocarbon generation amount in the oil and gas exploration evaluation process is well analyzed, and then the oil and gas resource evaluation credibility and the exploration effect are improved.

The present invention discloses a high-temperature material cooling device, which relates to the field of cooling of high-temperature materials for magnetization roasting and direct reduction materials of ore materials such as hematite, siderite, limonite, high-iron bauxite, red mud, etc., and other non-contact high-temperature materials. It includes a cylinder body and a cooling unit. The cooling unit includes a basic cooling module and an enhanced cooling module. The basic cooling module is of a hollow shaft rod structure and is arranged along the axial direction of the cylinder body. The enhanced cooling module is provided with a cooling cavity. One end of the enhanced cooling module is connected to the basic cooling module, and the other end extends radially outward. The cooling cavity is communicated with the hollow shaft rod. The high-temperature material cooling device provided by the present invention can achieve non-contact cooling of the cooling medium and the high-temperature material, has high cooling efficiency, and can be applicable to various different types of high-temperature materials, especially high-temperature reduction magnetization roasting materials that need to prevent oxidation.

The invention discloses an Fe2(SO4)3·5H2O modified siderite composite material, a preparation method and an application thereof. The preparation method specifically comprises the following steps: placing siderite and an additive Fe2(SO4)3·5H2O in a ball mill and performing ball milling together to obtain the Fe2(SO4)3·5H2O modified siderite composite material; during the ball milling process, the presence of Fe2(SO4)3·5H2O provides a weakly acidic environment for solid-phase ball milling, thereby stimulating the dissolution of Fe(II) in the siderite; the dissolved Fe(II) can undergo a reduction reaction with Cr(VI) in a solution to generate Cr(III), and the product is deposited in the form of a precipitate. Therefore, the Fe2(SO4)3·5H2O modified siderite composite material can be applied to water treatment to remove heavy metal Cr(VI) ions in water. The Fe2(SO4)3·5H2O modified siderite composite material provided by the present invention has strong reducing ability, high efficiency in treating Cr(VI) ions in wastewater during water treatment applications, and has the advantages of small dosage, short treatment time and high efficiency. It has large-scale industrial application value and good economic effect.

This invention discloses a sulfur-iron oxide composite denitrification packing, its preparation method, and its application, relating to the field of wastewater treatment technology. The packing comprises: sulfur powder, siderite, magnesite, magnesium oxide, metallic manganese, metallic aluminum, nano-iron, boron sludge, magnetite, and a binder. The total amount of metallic manganese, metallic aluminum, and nano-iron added constitutes 8% to 16% of the mass of the sulfur-iron oxide composite denitrification packing. This invention alleviates the technical problems of insufficient strength and wear resistance, as well as low denitrification efficiency in existing technologies.

The invention belongs to the technical field of nonmetal dressing and smelting, and particularly provides a method for reducing the content of an iron element in coal, which comprises the following steps: (1) mixing pulverized coal with water to obtain coal slurry; and (2) sequentially carrying out ultrasonic and high-gradient magnetic separation treatment on the coal slurry. The method for reducing the content of the iron element in the coal has the beneficial effects that an ultrasonic wave-high gradient magnetic separation combined technology is utilized, the adhesive force between iron-containing mineral particles and attached coal is weakened under the action of ultrasonic waves, and dissociation of iron-containing minerals such as pyrite, siderite and hematite in the coal and organic matter is promoted. And separating the coal from the minerals by using a high-gradient magnetic separation technology according to different magnetisms of the coal and the minerals. The method for reducing the content of the iron element in the coal is easy to operate, environmentally friendly, free of pollution and low in economic cost, the iron element in the coal can be effectively removed, and the method has important significance on the coal for industrial silicon smelting.

The invention discloses a complex refractory iron ore and siderite collaborative magnetizing roasting treatment method, and relates to the technical field of mineral processing, the complex refractory iron ore and siderite collaborative magnetizing roasting treatment method comprises the following steps: crushing complex refractory iron ore and siderite to below-1 mm, and mixing to form a mixed sample; putting the mixed sample into a cyclone preheater for preheating; the preheated mixed sample is put into a suspension roasting furnace, nitrogen is introduced into a furnace body, the mixed sample is roasted, and roasted minerals are put into a cyclone separator; and the roasted minerals passing through the cyclone separator are put into a water cooling device to be cooled, the cooled roasted minerals are subjected to ore grinding and then subjected to magnetic separation operation, and iron ore concentrate is obtained. According to the method, CO generated by decomposition of siderite in the ore is fully utilized in the magnetizing roasting process, weak magnetic iron minerals such as hematite and limonite are reduced into magnetite, carbon emission and environmental pollution caused by use of a coal reducing agent are eliminated, and a new way is opened up for clean and efficient utilization of refractory iron ore.

The invention belongs to the field of oil and gas field development, and discloses a retarded acid system for acidification transformation of clay type shale oil reservoirs and application of the retarded acid system. According to the method, an acid rock reaction speed equation is taken as a theoretical basis, the control on the acid rock speed is realized by controlling two main parameters, namely H + concentration and an acid rock contact area, which influence the reaction speed, so that the deep penetrating power of the acid liquor is realized, the acid liquor can effectively enter the deep part of a reservoir, and meanwhile, the generation of acidification secondary precipitation can be reduced; the surfactant additive is added to reduce the influence of a water-based acid liquid system on high-clay minerals, blockage removal and acidification transformation are mainly performed on calcite, dolomite, siderite and pyrite in high-clay reservoir stratification, an effective acid etching channel is formed, shale oil rock wettability is changed by adding the surfactant additive, the fluidity of crude oil is improved, and the high-clay reservoir stratification effect is improved. While an effective oil transportation channel is formed through effective transformation, the fluidity of crude oil is improved, the resistance of rocks is reduced, and the purpose of high yield is achieved.

The invention belongs to the technical field of water treatment materials. The invention relates to a processing method of autotrophic denitrification particles, in particular to a processing method of mineral-based multi-element electron donor autotrophic denitrification particles. The method comprises the following specific processing steps: uniformly mixing the white iron ore and an autotrophic microorganism bacterial suspension, and performing centrifugal separation to obtain a denitrification self-activation precursor; adding the denitrification self-activation precursor into a sodium alginate solution, uniformly stirring and mixing, transferring into a mold, and solidifying into a colloid; soaking the colloid in a calcium chloride solution for cross-linking reaction, and then refrigerating and curing to obtain the denitrification self-activating agent; mixing cement, pyrite, siderite, steel slag, medium-coarse sand, sodium bicarbonate and a denitrification self-activating agent, then adding the mixed solution, and granulating through a granulator to obtain a granular material; standing the particle material at room temperature, and spraying an anionic surfactant solution on the surface of the particle material; and after the standing is finished, drying the particle material to obtain the mineral-based multi-element electron donor autotrophic denitrification particles.

The invention belongs to the technical field of sewage treatment, and particularly relates to a foamed porous core-shell anaerobic ammonia oxidation-sulfur autotrophic composite filter material as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking waste cyan asbestos and Bayer process red mud as main raw materials, a mixture of sodium tetraborate and cryolite as a fluxing agent and fermented waste biomass as a foaming agent, compacting, granulating and sintering to prepare a spherical filter material A1, and then coating an adhesion liquid containing dolomite, siderite and blue iron ore powder on the surface layer of A1 by adopting an electrostatic spraying adhesion technology to prepare the spherical filter material A1. The preparation method comprises the following steps: preparing an anaerobic ammoxidation filter material A1-A through high-temperature firing, coating the surface layer of A1 with an adhesion liquid containing gypsum, graphite and pyrite, and preparing a sulfur autotrophic filter material A1-S through high-temperature firing. The prepared filter materials A1-A and A1-S can effectively perform ecological niche separation on anaerobic ammonium oxidation bacteria and sulfur autotrophic bacteria, and malignant competition of the sulfur autotrophic bacteria on anaerobic ammonium oxidation is avoided, so that the autotrophic nitrogen removal effect is improved.

This invention discloses a production method, the resulting product, and its application in the field of iron and steel metallurgical technology, which utilizes the waste heat from steel slag for temperature control. The invention calculates the amount of siderite that can be added based on the temperature and mass of the steel slag, then places the siderite on top of the liquid steel slag. It calculates the corresponding slag temperature during slag cooling and adds coke tailings at 1210℃ and 600℃, with the amount of coke added being 5% of the siderite mass. After crushing and cooling, the steel slag is magnetically separated to obtain iron ore. The remaining non-magnetic steel slag is the slagging agent, with calcium ferrite as its effective component. This invention utilizes the absorption of waste heat from steel slag by siderite, combined with temperature control, to efficiently recover waste heat from steel slag and process siderite at low cost. The resulting products are iron ore and a slagging agent that can be directly fed into the furnace, bringing significant economic value to enterprises and making a significant contribution to energy conservation and emission reduction in the steel industry.

The application discloses a method for preparing battery-grade ferrous phosphate solution and recovering copper and graphite by co-leaching of phosphorus iron slag and siderite. The method comprises the following steps: reducing leaching of raw materials including phosphorus iron slag, siderite and elemental iron by using phosphoric acid as a leaching agent, and solid-liquid separation to obtain battery-grade ferrous phosphate solution and leaching residue; and graphite flotation separation of the leaching residue after slurry adjustment to obtain copper-rich tailings and graphite concentrate. The method can selectively recover valuable components in the phosphorus iron slag and the siderite, obtain battery-grade ferrous phosphate solution, and efficiently recover graphite and copper components by the synergistic effect of the phosphorus iron slag and the siderite and by using weakly acidic phosphoric acid as a leaching agent, and the method is simple in process, low in cost and suitable for industrial production.

The invention relates to the technical field of iron ore recognition, in particular to an iron ore image recognition method based on an improved ShufflenetV2 network, and the method comprises the steps: obtaining a to-be-detected iron ore image; the to-be-detected iron ore image is input into a preset iron ore recognition model, an iron ore category recognition result is output, the iron ore recognition model is obtained through training of a training set, and the training set comprises a plurality of sample pictures of hematite, magnetite, siderite and chlorite; the iron ore recognition model is constructed by adopting a ShuffleNetV2 network improved on the basis of an attention mechanism. According to the method, the iron ore recognition model is constructed through the attention mechanism improved ShuffleNetV2 network, the model can accurately and quickly predict the type of the iron ore in real time, and the production cost is saved while the production efficiency is improved.

The present invention relates to the field of iron ore identification technology, and more particularly to an iron ore image recognition method based on an improved ShuffleNetV2 network. The method comprises the following steps: obtaining an iron ore image to be detected; inputting the iron ore image to be detected into a preset iron ore recognition model, and outputting an iron ore category recognition result. The iron ore recognition model is obtained by training a training set, the training set including sample images of hematite, magnetite, siderite, and chlorite, and the iron ore recognition model is constructed using an improved ShuffleNetV2 network based on an attention mechanism. The present invention constructs an iron ore recognition model using the improved ShuffleNetV2 network based on the attention mechanism. The model can accurately, quickly, and in real time predict the type of iron ore, thereby improving production efficiency while saving production costs.