49 results about "Manganite" patented technology

The present application relates to the technical field of mineral processing, and more particularly to a manganese ore magnetic separation device and dry beneficiation process, wherein the magnetic separation device comprises a mounting frame, a first channel, a second channel, a distribution plate, a magnetic roller, a conveyor belt, a feeding mechanism and an auxiliary mechanism. The magnetic roller is composed of a roller shaft, an end cover and a plurality of magnetic rings, the magnetic rings comprising a magnetic gathering plate and a magnetic block and being tightly arranged by a screw rod. The feeding mechanism realizes uniform feeding through a vibration and suspension system. The auxiliary mechanism realizes the vibration and shunting of the ore sand through a guide strip. The beneficiation process comprises crushing, grinding, classification, roasting, magnetic separation and post-processing. The magnetic separation adopts a two-stage type of roughing and cleaning to improve the recovery rate. The present application has the advantages of high separation efficiency, high concentrate purity, low energy consumption, strong adaptability and the like, and is suitable for large-scale industrial production.

To provide a method and an apparatus for producing carbon-recovering type manganese-based alloys by which the reduction of CO2 discharge is made possible.SOLUTION: A method for producing a carbon-recovering type manganese-based alloy includes a step (A) of charging a manganese ore-derived raw material having a manganese oxidation degree of 1.0 to 1.1 and a carbonaceous material into an electric furnace to perform refining, and then performing slag / metal separation, and a step (B) of producing a synthetic fuel using carbon monoxide contained in a by-product gas generated from the electric furnace as a raw material.SELECTED DRAWING: None

This application belongs to the field of electrolytic manganese preparation technology, specifically providing a method for preparing electrolytic manganese from manganese carbonate ore through dry polishing pre-selection and multi-stage purification, including the following steps: a) crushing and screening the manganese carbonate ore to obtain ore of a first particle size; b) subjecting the ore of the first particle size to dry strong magnetic separation pre-selection and tailings removal to obtain pre-selected concentrate; c) grinding the pre-selected concentrate to obtain a grinding product of a second particle size; d) mixing the grinding product with water or return liquid for slurry treatment to obtain a slurry; e) mixing the slurry with sulfuric acid for chemical leaching to obtain a leaching slurry; f) subjecting the leaching slurry to multi-stage purification treatment to obtain a purified electrolyte; g) electrolyzing the purified electrolyte to obtain cathode electrolytic manganese. The electrolytic manganese obtained by this application has the advantages of high purity, low water load, and low reagent consumption.

This invention relates to the field of ferroalloy smelting technology and discloses a high-carbon ferromanganese and its preparation method, comprising the following steps: raw material pretreatment; converter preheating and bottom material laying: pretreated high-grade manganese ore, lime, and coke powder are mixed and added as bottom material to the CLU converter for preheating; iron addition and initial reduction: high-carbon ferromanganese is added to the converter, and graphite fragments are added, and initial reduction is carried out under a pure argon atmosphere; atmosphere control and second-stage reduction: when the carbon content of the molten iron drops to 5.0-5.8%, the reblowing gas is switched to a mixed gas of argon, CO, and CH4, and the remaining high-grade manganese ore, silicon carbide, ferrosilicon manganese alloy, and supplementary coke powder are added in batches, while adjusting the slag composition; endpoint judgment and iron tapping. The high-carbon ferromanganese of this invention has precise composition and high purity, and the preparation method is characterized by high efficiency, low consumption, greenness, and high manganese recovery rate, enabling the industrial-scale production of high-carbon ferromanganese.

This invention relates to a method for the efficient separation of iron and manganese components in iron-manganese ore. The method involves mixing iron-manganese ore with intermediate products or vanadium products from the vanadium industry to obtain a mixture; roasting the mixture at high temperature to obtain roasted clinker; leaching the roasted clinker and then filtering it to obtain a manganese- and vanadium-containing leachate and an iron-containing leaching residue; adding a vanadium-precipitating additive to the obtained manganese- and vanadium-containing leachate and adjusting the pH value to induce precipitation; filtering after vanadium precipitation to obtain intermediate products or vanadium products from the vanadium industry and a manganese-containing supernatant; precipitating or drying the obtained manganese-containing supernatant to obtain a manganese product and manganese extraction waste liquid. This invention utilizes intermediate products or vanadium products from the vanadium industry to achieve mineral phase reconstruction of manganese minerals in iron-manganese ore. During this process, the intermediate products or vanadium products can be recycled, achieving efficient separation of iron and manganese in iron-manganese ore and efficient recycling of intermediate products or vanadium products from the vanadium industry.

The application relates to a preparation method of a manganese-containing pellet and a blast furnace smelting method, which comprises the following steps: step a, crushing, water-fine grinding and drying treatment are carried out on high-manganese lump ore to obtain high-manganese concentrate; step b, the high-manganese concentrate and bentonite are uniformly mixed according to a preset ratio to obtain a mixture; step c, the mixture is added into a disc pelletizer, and a pellet core is obtained in a water dripping ball forming mode; step d, based on the pellet core, the water content ratio and the balling time added into the disc pelletizer are controlled, so that the residual mixture of the mixture is uniformly wrapped on the outer layer of the pellet core, and a manganese-containing pellet is obtained. The method improves the traditional preparation method of the manganese-containing pellet, improves the quality of the manganese-containing pellet, and obtains the manganese-containing pellet meeting the performance standard of the blast furnace smelting. The blast furnace adding mode is optimized, the utilization efficiency of the manganese ore is improved, the iron loss is reduced, and the smelting of the high-titanium slag is improved.

The invention provides submerged arc sintered flux for welding SA-508Gr. 3C1.1 steel in third-generation nuclear power equipment and a preparation method of the submerged arc sintered flux. The submerged arc sintered flux comprises, by weight, 20-40 parts of fluorite, 35-50 parts of magnesia, 15-30 parts of aluminum oxide, 10-20 parts of wollastonite, 1-5 parts of silica powder, 0.5-2 parts of silicon iron, 2-5 parts of manganese ore, 1-5 parts of calcium titanate and 1-5 parts of rare earth materials. And the water glass accounts for 25-30% of the sum of the flux powder. The flux provided by the invention has good welding manufacturability, excellent slag removal, beautiful formation and more excellent mechanical properties.

The present application belongs to the field of arsenic-containing soil remediation, and particularly relates to a remediation agent for arsenic-containing soil, which comprises steel slag, manganese ore, ferrous source and modified fly ash in a weight ratio of 1-3.5:1-3.5:3-7:1-5; the modified fly ash is a product obtained by subjecting fly ash to iron precipitation, aldehyde amine polycondensation and organic acid modification; and the present application also provides a method for remediation of arsenic-containing soil by using bidens pilosa in combination with the remediation agent. The present application can unexpectedly realize synergy based on the components and proportions of the remediation agent and the combination of bidens pilosa, and can significantly improve the effective arsenic content in soil.

This invention belongs to the field of silver-manganese composite material preparation, and provides an efficient method for preparing silver-manganese composite materials. The method uses crypto-potassium manganese dioxide or α-MnO2 tunnel nanorods as a framework. After controllable reduction to construct defects, silver species are impregnated and anchored using a silver-ammonia complex solution. Following drying and air fixation treatment, silver-loaded defective manganese oxide octahedral molecular sieves are obtained. In the resulting material, silver can be stably distributed at surface defect sites and / or 2×2 tunnel opening sites, forming Ag-O-Mn interfaces. This method balances interfacial reactivity, pore structure stability, and low migration and long-term stability of silver species, solving the problem of simultaneously achieving high activity and structural stability, and has good application value.

The application discloses a method for quickly and effectively treating the accumulation of a blast furnace hearth. The method combines manganese ore furnace washing, large air volume, small ore batch, full coke, concentrated addition of circulating clean coke, and material distribution adjustment, clearly defines the ore batch and load during the furnace washing, adjusts the material distribution, controls the [Si] and [Mn] of the molten iron, the (MnO) in the slag, the physical heat, the binary basicity, the water temperature difference, the air volume usage, the number of air supply tuyeres, the addition amount and addition mode of the manganese ore at different stages, and other operations, so that the accumulation of the hearth can be eliminated and the furnace condition can be restored to the normal level in only 3-10 days.

This invention discloses an iron-manganese ore air flotation roasting magnetization device and its usage method, relating to the field of mineral processing technology. The device includes a feeding unit, a drying and preheating unit, an oxidation furnace, a first gas-solid separator, a reactor, a closed indirect heat exchange unit, and a magnetic separation unit connected in sequence. The outlet of the first gas-solid separator is connected to the inlet of the reactor via a first airlock mechanism. The outlet of the reactor is connected to the inlet of the closed indirect heat exchange unit via a second airlock mechanism. The closed indirect heat exchange unit employs indirect heat exchange. The feeding unit is connected to the inlet of the reactor via a third airlock mechanism. A temperature monitoring unit is installed in the reactor to monitor its internal temperature. A controller is used to control the third airlock mechanism to adjust the temperature inside the reactor based on the temperature measured by the temperature monitoring unit. This device and its usage method avoid the defects caused by secondary oxidation, ensure fluidization and reduction uniformity, and guarantee a stable and controllable reducing atmosphere within the reactor.

This invention belongs to the field of manganese ore flotation, specifically disclosing a novel flotation method for rhodochrosite. The method involves pre-oxidizing the surface of rhodochrosite with an oxidant, followed by flotation using a flotation reagent containing sulfur-nitrogen-hydroxyoxime acid collectors to obtain rhodochrosite concentrate. This invention enhances the surface reactivity of rhodochrosite by oxidizing it, thereby strengthening the interaction between rhodochrosite and sulfur-nitrogen-hydroxyoxime acid collectors, achieving highly efficient flotation separation and enrichment of rhodochrosite. Compared with existing rhodochrosite flotation processes, the oxidation flotation method uses lower collector dosages, exhibits better selectivity, and has promising prospects for industrial application.

This invention discloses a process for roasting manganese ore based on a sintering machine. The process includes the following steps: S1, crushing and sorting the manganese ore; S2, conveying the manganese ore lumps to the bottom and edge material hopper of the bottom and edge material laying device; S3, feeding the sintering machine; S4, roasting: 1) drying in the drying section; 2) preheating section temperature of 750-900℃, preheating time of 6-8 min; 3) roasting section temperature of 1000-1200℃, roasting time of 18-22 min; 4) homogenization section temperature of 1000℃, homogenization time of 3-4 min; 5) cooling in the first cooling section for 4-6 min; S5, secondary cooling; S6, the finished manganese ore after secondary cooling enters the screening process. This invention rationally utilizes discarded or obsolete sintering machines to produce manganese ore, improving resource utilization, reducing the cost of manganese ore roasting equipment, saving investment, and achieving the goal of improving quality and increasing production.

The invention provides manganese-rich slag and a smelting method thereof.The method comprises the steps that a carbon-containing raw material, silica and manganese ore are crushed and then mixed, and a smelting raw material is obtained; the smelting raw materials are put into an electric furnace to be heated and smelted for 1-1.2 h, and a smelted melt is obtained; transferring the smelted melt into a first steel ladle, standing for 5 + / -0.5 min, and transferring a liquid slag layer at the upper part into a second steel ladle; the liquid slag layer of the second steel ladle is cast after standing, and first solidified slag is obtained after cooling; the molten iron on the lower layer of the first steel ladle stands till the slag layer on the upper layer is solidified, drossing and cooling are conducted to obtain second solidified slag, and the molten iron on the lower layer is cast to obtain iron alloy; and the first solidification slag and the second solidification slag are combined to obtain a manganese-rich slag product. According to the method, the slag-iron separation purity is further improved through a step-by-step separation method, manganese elements can be reduced to enter an alloy phase in the short-time smelting process, and the recovery rate of the manganese elements in the manganese-rich slag is increased.

This invention relates to the field of red luminescent materials, specifically disclosing a europium-doped sodium manganese mica red luminescent material, its preparation method, and its applications. The general chemical formula of the europium-doped sodium manganese mica red luminescent material is NaMg. a Mn 3‑a AlSi3O 10 F2:xEu 2+ x = 2 mol%–5 mol%, a = 2.4–2.8. This invention uses sodium manganese mica as the luminescent matrix and Eu... 2+ As a sensitizer, some of the Mg atoms in fluorophlogopite are located in octahedral positions. 2+ Mn 2+ Replaced by Mn 2+ It appears in the matrix as an activator; Eu 2+ Doping into the matrix, in Eu 2+ →Mn 2+ Under the action of energy transfer, Mn 2+ The red light emission is greatly enhanced; through Na + interlayer cations K in manganese mica + By exchanging and regulating the lattice of the mica matrix, europium-doped sodium manganese mica red luminescent material has great application potential in the field of LEDs for plant growth.

The invention belongs to the technical field of reclaimed water purification methods, and particularly relates to an artificial wetland reclaimed water organic matter removal method based on manganese ore sand modification, which comprises the following steps: step 1, carrying out preliminary modification on a manganese ore sand filler in an artificial wetland reactor through a Mn < 2 + > solution; step 2, carrying out further modification on the manganese ore sand filler in the constructed wetland reactor through a potassium permanganate solution; step 3, enabling the concentration of Mn < 2 + > in the constructed wetland reactor to reach a set standard through backwashing; and step 4, starting to operate the constructed wetland reactor to purify the reclaimed water. The surface of the modified manganese ore adsorbs negatively charged organic matters such as humus under the action of electrostatic attraction, and oxygen deficiency active sites catalyze water molecules to generate active oxygen and degrade the organic matters, so that the specific surface area and adsorption sites of the manganese ore can be greatly increased, and the oxygen deficiency catalytic oxidation reduction activity of the surface of the manganese ore can be enhanced; the catalytic degradation efficiency of the material on organic matters is promoted.

This invention relates to a high-capacity, high-conductivity iron-manganese oxide powder, its preparation method, and its applications. The preparation method comprises the following steps: uniformly mixing MnFe-PBA powder via co-precipitation; ultrasonically dispersing the MnFe-PBA powder in a deionized water-ethanol mixed solution to form uniform MnFe-PBA particles; coating the surface of the MnFe-PBA particles with a layer of hydroquinone-formaldehyde resin via aldol condensation to obtain MnFe-PBA@RF particles; and finally calcining the MnFe-PBA particles at high temperature under an inert atmosphere to obtain Mn2FeO3@C powder. This preparation method allows for large-scale synthesis, and the obtained Mn2FeO3@C powder exhibits high specific capacity and high conductivity when used as a cathode in aqueous zinc-ion batteries.

This application provides a method for preparing electrolytic manganese dioxide and the electrolytic manganese dioxide itself, belonging to the field of battery materials technology. The method for preparing electrolytic manganese dioxide includes the following steps: reacting low-grade manganese oxide ore with a sulfur-containing reducing agent and acid, followed by iron removal filtration to obtain a manganese sulfate solution; adding a heavy metal removal agent and a silicate oxygen carrier to the manganese sulfate solution for primary impurity removal; adjusting the pH of the solution after primary impurity removal to an acidic range, adding a molybdenum removal agent for deep impurity removal to obtain a fine filtrate; supplementing the fine filtrate with a silicate oxygen carrier to form an electrolyte; and electrolyzing the electrolyte containing the oxygen carrier to generate electrolytic manganese dioxide. This invention, by using a silicate oxygen carrier prepared through a specific process and employing a staged addition method, can effectively remove impurities from the solution, improving the quality and performance of electrolytic manganese dioxide.

The invention provides a method for improving the recovery rate of manganese in the manganese-silicon alloy smelting process, which comprises the following steps: respectively crushing silica, coke, manganese ore and manganese-silicon alloy smelting slag, and mixing to obtain smelting raw materials; a closed electric furnace is filled with smelting raw materials for smelting, and alloy melt is obtained; transferring the alloy melt into a ladle, and carrying out ladle-to-ladle operation; and the manganese-silicon alloy molten iron is poured into a mold for ingot casting, and a manganese-silicon alloy finished product is obtained after cooling. According to the method, the slag is recycled as a raw material, manganese in the slag is recycled, and components such as CaO and MgO in the slag participate in construction of a new slag system. And under the reasonable proportion, an environment which is more beneficial to manganese oxide reduction and slag-metal separation is formed in the furnace, so that the loss of the manganese element caused by insufficient reduction is reduced, and the recovery rate of the manganese element is effectively improved.

The present application relates to the technical field of metal smelting extraction, and specifically to a multi-element extraction method for polymetallic manganese ore. The method comprises: ball-milling polymetallic manganese ore; reduction roasting and protectively cooling same; then performing sulfuric acid leaching to obtain a plurality of valuable metals; using an alkaline substance to adjust the pH to remove iron; then adding a precipitant to recover nickel and cobalt; finally transferring a finished manganese sulfate solution to an electrolysis system to prepare electrolytic manganese; subjecting a nickel-cobalt intermediate product to leaching, impurity removal, and extraction for further purification; and then performing evaporative crystallization to obtain a final product, wherein copper can be precipitated by the precipitant to be recovered and to be subjected to electrowinning and purification, or can be recovered by means of replacement after acid leaching, and the leaching efficiency of nickel, cobalt, manganese and copper can all reach 99% or more. The hydrometallurgical process used in the present method can efficiently extract valuable metals such as nickel, cobalt, manganese and copper from the polymetallic manganese ore, is simple and environmentally friendly, has a high rate of recovering nickel, cobalt, manganese and copper from the polymetallic manganese ore, recovers high-purity nickel, cobalt, manganese and copper, can achieve full utilization of resources.

The utility model discloses adjustable multi-hammerhead manganese ore crushing equipment, which relates to the technical field of manganese ore processing, and is technically characterized by comprising a crushing box body, the bottom discharging and collecting seat is mounted and connected to the upper end position of the crushing box body; the manganese ore feeding hopper is fixedly connected to the inner side of the upper end of the crushing box body; the adjustable rotary crushing plates are movably mounted on the two sides of the interior of the crushing box body; the multi-hammerhead rotary crushing device has the technical effects that the hammerhead rotary rollers of the multi-hammerhead rotary crushing mechanism can drive the crushing hammerheads to rotate during rotation, manganese ore is located between the crushing hammerheads and the adjustable rotary crushing plate, the crushing efficiency is improved, and the crushing efficiency is improved. Therefore, the crushing hammer head can effectively crush manganese ore when making contact with the manganese ore, and the distance between the crushing hammer head and the adjustable rotary crushing plate can be adjusted through the telescopic adjusting mechanism.

The present invention provides a method and apparatus for producing manganese from a manganese ore without using any carbon or a carbon-containing reductant. The manganese ore may be a primary ore comprising rhodochrosite and / or a secondary ore in which manganese is present as at least one of the mineral and mineraloid forms of manganese oxide and manganese oxyhydroxide, for example. The method (500a) comprises comminuting (501) the manganese ore into fines and converting a manganiferous mineral in the ore into a trivalent manganese oxide using at least one of a reductant-free pyrometallurgical technique (502) and an inorganic hydrometallurgical technique (503). The trivalent manganese oxide is then added (505) to an amount of liquid sodium in excess of the stoichiometric amount thereof required for a redox reaction between the liquid sodium and the trivalent manganese oxide, to produce a solid phase comprising both elemental manganese and other insoluble products at least comprising sodium oxide. This redox reaction is conducted in an inert atmosphere and its temperature is controlled to remain below about 600 °Celsius to inhibit the production of ternary oxides like α- NaMnO2. The method then comprises separating (506) at least some of the solid phase from the liquid sodium, and separating (507) the elemental manganese from the other insoluble products, which may be done, for example, based on their different densities. The phase separation (506) and the separation (507) of the elemental manganese from the other insoluble products may be carried out in any order. Thus manganese can be extracted from its ores without producing any greenhouse gases, and sodium oxide, or sodium hydroxide derived from hydrating this sodium oxide, can be produced as a co-product. If this sodium oxide and / or hydroxide, which has a high affinity for carbon dioxide, is then used to mineralize captured carbon dioxide, the invention can have a negative carbon footprint overall. The corresponding apparatus comprises a comminution device (such as a rock crusher or grinder), a subassembly for converting the manganiferous mineral in the ore into a trivalent manganese oxide, a gas-tight reaction vessel for reacting the trivalent manganese oxide with the liquid sodium, a solid-liquid sodium phase separator for removing excess liquid sodium, and a solid-species separator for separating the elemental manganese from the other insoluble products.

The invention discloses a cyclic production method for co-production of white carbon black and battery-grade manganese sulfate and manganous-manganic oxide, and belongs to the technical field of co-production of chemical engineering and new energy materials. According to the method, high-pyrite, high-purity quartz sand, semi-coke, anhydrous sodium sulphate (Na2SO4) and low-grade manganese oxide ore are used as core raw materials; through closed-loop coupling of pyrite fluidized bed roasting power generation-waste heat gradient pressurization utilization, SO2 furnace gas multistage countercurrent absorption reduction manganese leaching, sodium silicate preparation-carbon component co-production of white carbon black and sodium carbonate, manganese sulfate deep purification-crystallization / manganous-manganic oxide calcination, ammonium sulfate byproduct and other process links, raw material all-component utilization and energy gradient recovery are achieved. Sulfuric acid does not need to be consumed, the electricity consumption is reduced by 60%-80% compared with a conventional two-ore method, the production cost of the battery-grade manganous-manganic oxide is saved by more than 4000 yuan / ton compared with a conventional process, and the process is free of emission of three wastes in the whole process, environment-friendly and suitable for large-scale industrial production.

This invention provides a thermochemical cycle method for hydrogen production by water splitting of manganese oxides and carbonates, comprising: heating high-valence manganese oxides to a first temperature to undergo a thermal deoxygenation reaction, generating low-valence manganese oxides and oxygen; reacting the low-valence manganese oxides generated from the thermal deoxygenation reaction with carbonates at a second temperature to generate manganite, carbon dioxide, and carbon monoxide; reacting the generated manganite with carbon dioxide at a third temperature to generate high-valence manganese oxides and carbonates; separating the carbon monoxide and carbon dioxide generated from the reaction of low-valence manganese oxides and carbonates; and reacting the carbon monoxide with water vapor in a water-vapor shift reaction to generate carbon dioxide and hydrogen. This method consumes H₂O. 2 O and thermal energy enable the phased generation of hydrogen and oxygen products. Other substances in the system are recycled through different reaction configurations, effectively overcoming the problems of high temperature, low oxygen partial pressure, and poor stability in traditional thermochemical two-step cyclic reactions.

The present invention relates to composite beads coated with H-Birnessite layered manganese oxide with a sheet nanostructure, the average thickness of the sheets being between 1 and 50 nm, and the length L of the sheets being between 0.2 μm and 3 μm, as well as the manufacturing method thereof and a cell for producing said composite beads. The present invention also relates to the use of such beads in treatments for decontaminating fluids containing toxic elements such as heavy metals or organic pollutants.

The utility model relates to the field of manganese ore gushing water treatment, in particular to a manganese ore gushing water treatment system beneficial to sludge resource utilization, which comprises an adjusting tank, a carbonization reaction tank, a mixed reaction tank, a flocculation reaction tank, a sludge tank and a solid-liquid separation device, manganese ore gushing water is treated through sequential communication of the carbonization reaction tank, the mixed reaction tank and the flocculation reaction tank, the selective precipitation effect of manganese ions can be remarkably improved under the continuous action of the three reaction tanks, co-precipitation of calcium and magnesium ions in a sludge tank is reduced, and finally the manganese content in sludge is increased; therefore, the sludge can be directly used for production of the electrolytic manganese industry, the sludge treatment cost of an enterprise can be effectively reduced, the sludge can be directly utilized to increase income, and the environmental risk generated in the sludge stockpiling and disposal process can be reduced; the precipitated sludge is treated through the solid-liquid separation device, and the sludge is further concentrated for transportation and storage, so that the manganese content in the sludge is further increased.

The invention discloses a method for oxidizing molybdenite and synchronously fixing sulfur through high-iron manganese ore, and belongs to the technical field of non-ferrous metallurgy smelting. The method comprises the following steps: respectively crushing high-iron manganese ore and molybdenite, grinding to predetermined fineness, sieving with a 200-mesh sieve, and stirring and mixing according to the molar ratio of manganese element to molybdenum disulfide, namely n (Mn): n (MoS2), of 1.0: 1-2.5: 1; then in a pure oxygen atmosphere, oxidizing roasting is carried out by adopting two-stage temperature control, heat preservation is carried out at the first stage of 440-460 DEG C, heat preservation is carried out at the second stage of 540-560 DEG C, molybdenum in molybdenite is oxidized, meanwhile, sulfur is fixed into sulfate, and a roasted product containing molybdenum oxide and manganese sulfate is obtained; according to the method, the oxidizability of MnO2 and the catalytic action of Fe2O3 in the high-iron manganese ore are utilized, sulfur is efficiently fixed into manganese sulfate while molybdenite is completely oxidized, the sulfur fixation rate can reach 80% or above, value-added utilization of two mineral resources is synchronously achieved, SO2 emission is greatly reduced, and the method has the advantages of being short in process, low in energy consumption, low in cost, environmentally friendly and the like.

The invention relates to the technical field of inorganic fine chemical engineering, in particular to a preparation technology of high-purity manganese carbonate for a new energy material. The method comprises the following steps: preparing a manganese sulfate crude solution from manganese ore as a raw material, carrying out high-temperature recrystallization impurity removal to obtain a high-purity manganese sulfate solution, and reacting the high-purity manganese sulfate solution with carbonate ions in a carbonate solution to prepare the high-purity manganese carbonate. The preparation technology is green and environment-friendly, the process is simple, the particle size of manganese carbonate is controllable, the sulfate radical content is low, and the purity is high.

This application provides a method for phase analysis of manganese in ores, belonging to the field of phase analysis of ores. The method involves weighing an ore sample and sequentially leaching it with silver nitrate solution to separate the manganese sulfate phase; then leaching it with aluminum nitrate solution under heating, adding a mixed solution of isoamyl alcohol and isoamyl acetate as a first inhibitor to separate the manganese carbonate phase; followed by stepwise leaching with sulfurous acid solution and hydroxylamine sulfate-sulfuric acid solution, adding a mixed solution of n-butanol and ethyl acetate as a second inhibitor to separate the manganese oxide phase; and finally, the remaining residue is digested by ashing to obtain the silicate phase. The manganese content of each phase digest is determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). This application rationally selects various possible forms of manganese in the ore and scientifically selects the leaching agent for each phase, ensuring that the leaching agent of the previous phase does not leach manganese from the subsequent phases, thus guaranteeing accurate determination of each phase.