Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

321 results about "Iron content" patented technology

Where the amount of iron ranges from 12.18 mg to 1.67 mg per 100g. The top vegetable is Mushrooms, morel, raw with the highest iron content, which in 100g contains 12.18 mg of iron. The total recommended daily allowance or RDA for iron is 14 mg.

Efficient hot galvanizing method and system based on zinc liquid purification process

According to the technical scheme, the efficient hot-dip galvanizing method based on the zinc liquid purification technology comprises the following steps of incoming material inspection, degreasing, acid pickling, rinsing, plating assisting, drying, hot-dip galvanizing, zinc draining and cooling, and the hot-dip galvanizing process is dynamically matched with electromagnetic stirring strength through gradual temperature control; based on a temperature-iron content response curve, parameters of all procedures are accurately controlled, temperature dynamic adjustment is achieved, collaborative optimization of the zinc liquid purification and slag salvaging process is achieved, and the method has the advantages that zinc slag is reduced, the coating uniformity is improved, and energy consumption is reduced.
Owner:陕西友发钢管有限公司

Flow and iron content measuring method and system for iron fine powder ore pulp pipeline transportation

The invention discloses a method and a system for measuring flow and iron content of fine iron ore pulp. The method comprises the following steps of: sleeving two detection coils with the same parameters on a transportation pipeline of iron fine powder ore pulp in a front-and-back spaced manner, connecting the two detection coils into a detection module, and acquiring two similar detection signals with time delay of the two detection coils when the detection signals flow through the iron fine powder ore pulp by using the detection module; and measuring and detecting the flow and the iron content by utilizing the property that the iron concentrate pulp contains ferromagnetic substances in the two detection signals. According to the invention, the volume flow rate of the iron fine powder ore pulp in the pipeline transportation process and the content of iron elements in the ore pulp can be detected in real time, the iron fine powder ore pulp can be monitored in the transportation process, control, distribution and settlement are convenient, and the iron content of the iron fine powder ore pulp can be known in real time, so that the iron content of the iron fine powder ore pulp can be known approximately.
Owner:CHINA JILIANG UNIV

Golf club head

A golf club head has a loft no less than 38°. The golf club head also comprises a material having a material composition that includes an Iron content that by weight is highest of all constituents. The material composition also has a Chromium content no less than 10.5% by weight and a Nickel content no greater than 0.5% by weight.
Owner:SUMITOMO RUBBER INDUSTRIES LTD

Low-grade magnetite magnetic separation process

The low-grade magnetite magnetic separation process comprises the following steps that 1, raw ore is crushed, the raw ore is magnetite with the magnetic iron content not higher than 10%, raw ore particles are obtained after the raw ore is crushed, and the particle size range of the raw ore particles is 1-2.5 cm; 2, primary strong magnetic separation is conducted on the raw ore particles, middlings and tailings I are obtained, the iron grade of the middlings is 14%-22%, and the iron grade of the tailings is 3%-5%; 3, the middlings are sequentially subjected to first-stage ore grinding, second-stage magnetic separation, second-stage ore grinding and third-stage magnetic separation, and iron ore concentrate and tailings III are obtained; and the tailings I are sequentially subjected to tailings grain decomposition and tailings magnetic separation to obtain tailings II and tailings III, and the tailings II are returned to secondary grinding again. According to the method, the tailings I are subjected to grain dissolving-regrinding optimization, the tailings I are subjected to secondary dissociation through a high-pressure roller mill or a dry crusher, micro-fine particle magnetic minerals are released, after magnetic separation is conducted, the tailings II are returned to the original process for further grain dissolving and magnetic separation, qualified iron ore concentrate products are obtained, and resource waste is avoided.
Owner:WANGCANG COUNTY HONGDA MINING CO LTD

Method for preparing high-purity quartz and recovering iron element based on high-silicon tailings

PendingCN121317769ASilicaRoastingQuartz
The invention discloses a method for preparing high-purity quartz and recovering an iron element based on high-silicon tailings, and belongs to the technical field of comprehensive utilization of resources and preparation of high-purity quartz. According to the method, high-silicon tailings are sequentially subjected to mineral dissociation, low-magnetic-field roughing, high-magnetic-field scavenging, flotation and ultrasonic acid leaching treatment, and refined quartz is obtained; and carrying out multi-stage gradient chloridizing roasting and hot-pressing acid leaching treatment on the refined quartz of which the gas-liquid inclusion index and transparency meet the requirements to finally prepare the high-purity quartz of which the SiO2 purity is greater than or equal to 99.995%. In addition, for strong magnetic minerals generated in the magnetic separation process, the iron content of the strong magnetic minerals reaches the standard, the strong magnetic minerals react with the acid leaching filtrate under the ultrasonic strengthening condition to leach iron ions, and iron-rich filtrate is subjected to an iron precipitation reaction to generate iron carbonyl. The method provided by the invention not only provides a reliable judgment basis and a complete technical route for preparing high-purity quartz from the high-silicon tailings, but also opens up a new way for resource utilization of the tailings, and has remarkable industrial application value and environmental benefits.
Owner:KUNMING UNIV OF SCI & TECH

Method for preparing hafnium oxide with ultralow iron content

The invention relates to the technical field of hafnium oxide preparation, in particular to a method for preparing hafnium oxide with ultralow iron content, which comprises the following steps: based on N235 extraction separation in a hydrochloric acid system, crushing hafnium oxide raw stone, performing coarse grinding to obtain hafnium oxide powder, then sequentially performing alkali fusion decomposition treatment and acid leaching impurity removal treatment to obtain a zirconium-hafnium mixed solution, and then performing vacuum drying on the zirconium-hafnium mixed solution to obtain the hafnium oxide with ultralow iron content. The preparation method comprises the following steps: taking hafnium as a raw material, carrying out extraction and back extraction to obtain a hafnium-enriched solution, treating the hafnium-enriched solution with ion exchange resin to obtain a high-purity hafnium solution, finally adding saturated ammonia water, filtering and washing the obtained precipitate, drying, and firing to obtain the hafnium oxide with ultralow iron content. According to the invention, while zirconium and hafnium separation is realized, a small amount of contained metal cations, especially iron ions, are fully removed, and the iron content is reduced, so that hafnium oxide with ultralow iron content is obtained.
Owner:JIANGXI ZHONGHAFNIUM NEW MATERIAL CO LTD

High-toughness die-casting aluminum alloy and preparation method thereof

PendingCN120193189AManganeseMetallic materials
The invention relates to the field of metal materials, in particular to a high-strength and high-toughness die-casting aluminum alloy and a preparation method thereof.The high-strength and high-toughness die-casting aluminum alloy comprises, by weight, 4.0%-4.5% of magnesium, 1.8%-2.6% of silicon, 0.5%-2.0% of iron, 0.3%-1.2% of manganese, 0.3%-1.2% of chromium, 0.5%-3.0% of zinc and the balance aluminum and inevitable impurities; the sum of the weight percentages of manganese and chromium is greater than or equal to the weight percentage of iron. The problems that an existing die-casting aluminum magnesium alloy is low in strength, difficult to regenerate and high in process cost can be solved, and certain strength and toughness can still be guaranteed while the high iron content is achieved.
Owner:CHONGQING UNIV +2

Functional aggregate, preparation method thereof and self-purification asphalt pavement material

The invention provides a functional aggregate, a preparation method thereof and a self-purification asphalt pavement material. The preparation method of the functional aggregate comprises the following steps: screening residual mud and residue soil, crushing and screening to obtain a raw material, or mixing low-iron-content residue soil and red mud to prepare the raw material; the preparation method comprises the following steps: heating raw materials to 400-550 DEG C, introducing CO2, carrying out heat preservation for 40-120 minutes, then heating to 750-850 DEG C, and carrying out heat preservation for 40-120 minutes, so as to obtain calcined aggregate; soaking the mixed material in a mixed solution containing 0.1-1mol / L FeCl3 for more than 10 hours, and then carrying out hydrothermal reaction at 100-150 DEG C for 4-8 hours to obtain aggregate; and dipping the aggregate in a bacterial liquid containing denitrifying bacteria, petroleum hydrocarbon degrading bacteria and a curing agent, and obtaining the functional aggregate by adopting a vacuum negative pressure dipping method. The material formed by compounding the functional aggregate and the asphalt modifier has the functions of adsorption, catalytic oxidation and biodegradation.
Owner:SHENZHEN UNIV

Steel slag-based binder for preparing micro-electrolysis iron-carbon spheres and application of steel slag-based binder

A preparation method of the steel slag-based binder comprises the following steps: crushing converter steel slag, grinding to 150 meshes or below to obtain converter steel slag fine powder, removing iron, continuously grinding to 300-350 meshes, and removing iron again until the metal iron content is less than or equal to 0.5 wt% to obtain active steel slag powder; fly ash and water are mixed and then settled, bottom sediment is taken and dried till the water content is smaller than or equal to 3 wt%, and pretreated fly ash is obtained; and mixing the active steel slag powder, the pretreated fly ash, pyrophyllite and wollastonite according to a certain ratio, and uniformly grinding to obtain the steel slag-based binder for preparing the micro-electrolysis iron-carbon spheres. The method not only solves the problem of recycling of steel slag resources, but also can prepare the iron-carbon micro-electrolysis filler with low production cost, so that the cost is remarkably reduced.
Owner:WUHAN IRON & STEEL METAL RESOURCES CO LTD

Iron-rich yield-increasing foliar fertilizer for rice as well as preparation method and application method of iron-rich yield-increasing foliar fertilizer

The invention relates to the technical field of agriculture, in particular to an iron-rich yield-increasing foliar fertilizer for rice as well as a preparation method and an application method of the iron-rich yield-increasing foliar fertilizer. According to the specific technical scheme, the iron-rich yield-increasing leaf fertilizer for the rice is prepared from, by mass, 15%-25% of porous chitosan, 20%-30% of L-malic acid and 45%-55% of ferrous sulfate. The technical problem that in the prior art, the cadmium content of brown rice cannot be reduced while the iron content cannot be increased through a leaf fertilizer is solved.
Owner:HUNAN LILIMAN TECHNOLOGY DEVELOPMENT CO LTD

High-yield integrated production method for cigar wrappers

The invention discloses a high-yield integrated production method for cigar wrappers. This method builds a “four in one” production facility system that integrates seedling cultivation, transplanting, drying, and fermentation processes of cigar wrapper tobacco leaves. The system has a light intensity of 75-160 umol / (m2·s), a temperature of 25±5° C. and a relative air humidity of 75%±10%; when transplanting tobacco seedlings, using a nutrient solution, which is a high iron boron nutrient solution with an iron content of 0.3-0.7 mM calculated as Fe and a boron content of 9.5-13.0 mg / L calculated as boric acid. The invention achieves a cigar shell yield of over 65%, a 40% reduction in production facility investment, and a 20% reduction in labor force by accurately regulating the production environment and the supply of growth factors such as nutrients and light.
Owner:HUBEI TOBACCO SCI RES INST

Metal powder for additive manufacturing

A metal powder for additive manufacturing including, in wt %, Ni 9.0-12.0, Cr 2.0-4.5, Mo 3.5-4.5 and Ti 0.1-1.0; and, if present, Si up to 0.5, Mn up to 0.5, Al up to 0.1, Co up to 0.1, N up to 0.05 and / or C up to 0.07; the balance being Fe and usual impurities. A use of the metal powder for additive manufacturing is also provided, as well as a process for producing an object by additive manufacturing, including building an object by iteratively melting particles of the metal powder and solidifying the melt, and subsequently aging the built object without any preceding solution annealing thereof.
Owner:SANDVIK MACHINING SOLUTIONS AB

High-iron-content aluminum alloy welding wire and preparation method and application thereof

The invention relates to a high-iron-content aluminum alloy welding wire and a preparation method and application thereof, and belongs to the technical field of welding. The aluminum alloy welding wire with the high iron content is composed of, by mass, 1.0%-3.0% of Si, 0.8%-3.5% of Fe, 1.0%-3.0% of Mn, 0.2%-1.5% of Cr, 0.2%-1.5% of V and the balance Al and other inevitable impurities. The mass ratio of Mn to Fe is 0.85 to 1.0; the mass ratio of Cr to Mn is 0.25 to 0.4; the mass ratio of (Mn + Cr) / Fe is 1.1-1.3; the mass ratio of V / (Mn + Cr) is 0.2-0.3; and the mass ratio of Si to (Fe + Mn + Cr + V) is 0.35-0.5. And the comprehensive performance of the welding seam is improved through an organization regulation mechanism.
Owner:SUZHOU UNIV

Smelting and casting method of high-toughness regenerated aluminum alloy

PendingCN121911836AProcess efficiency improvementDie castingDendrite (metal)
The invention relates to the technical field of metal casting, and discloses a smelting and casting method of a high-toughness regenerated aluminum alloy, which comprises the following steps: measuring the iron content of a regenerated aluminum melt, regulating and controlling the manganese-iron ratio, heating the melt to 750-790 DEG C, and carrying out overheating treatment to eliminate a hereditary core; cooling to 630-645 DEG C, applying a mechanical shear flow field with the average shear rate not lower than 60s <-1 > in the interval, stripping a diffusion boundary layer on the surface of the iron-rich phase crystal nucleus by utilizing fluid drag force, breaking dendritic crystals, and separating out in a polyhedral or spherical manner; according to the method, through active intervention of a critical shear flow field, the problem of needle-like growth of an iron-rich phase caused by solute diffusion blocking in a traditional technology is solved, in-situ generation of the harmless iron-rich phase in the high-iron-content secondary aluminum is achieved, the obdurability of a die casting is improved, and dependence on the purity of raw materials is reduced.
Owner:HUNAN QIANYUAN ALUMINUM CO LTD

Method for reducing iron content in rare earth chloride

PendingCN121250149ARare earth metal chloridesProcess efficiency improvementPhysical chemistryChloride
The invention discloses a method for reducing the content of iron in rare earth chloride, which comprises the following steps: step 1, adding alkali slurry into heavy sand slurry containing ferrous ions to adjust the pH value to 1-2, then adding an oxidizing agent, and reacting for 2-3 hours at the temperature of 30-45 DEG C to oxidize the ferrous ions into ferric ions to obtain first rare earth slurry, the concentration of ferrous ions is 0.1-0.2 g / L; 2, the pH value of the first rare earth slurry is adjusted to 3.8-4.2, a reaction is conducted for 1.5-2.5 h at the temperature of 62-68 DEG C, so that ferric ions form precipitates, and second rare earth slurry is obtained; 3, carrying out solid-liquid separation on the second rare earth slurry to obtain an optimal solution filtrate and a filter cake; and step 4, performing removal, solid-liquid separation, evaporation and concentration on the optimal solution filtrate to obtain a rare earth chloride product with the iron content lower than 0.05%. The invention aims to introduce hydrogen peroxide in the thorium neutralization and deposition stage to reduce the accumulation of iron impurities in the circulation process.
Owner:湖南中核金原新材料有限责任公司

Method for preparing nano calcium carbonate by efficiently removing iron impurities in nano calcium carbonate raw material ore

The invention discloses a method for preparing nano calcium carbonate by efficiently removing iron impurities in nano calcium carbonate raw material ore, and belongs to the technical field of nano material preparation. The method comprises the steps of raw material pretreatment, digestion treatment, size mixing treatment, carbonization treatment, surface treatment and drying, in the size mixing treatment process, a whitening agent Na2SO3 is adopted for removing iron in raw material ore, Na2SO3 serves as a reducing agent, Fe < 3 + > is reduced into Fe < 2 + >, a proper amount of whitening auxiliary such as DTPA or triethanolamine forms colorless water-containing iron chelate ions with iron ions, and the iron chelate ions are subjected to surface treatment. And through a synergistic system of the whitening agent and the whitening auxiliary agent, efficient removal of iron is realized. The whiteness of the prepared nano calcium carbonate reaches up to 97.2%, the nano calcium carbonate has the remarkable advantages of being efficient, environmentally friendly, economical and the like, the iron content in the nano calcium carbonate can be remarkably reduced, the purity and whiteness of the product are effectively improved, and the high requirement of the high-end application field for the quality of the nano calcium carbonate is met. Meanwhile, the method is simple and convenient to operate and easy to industrially apply, and has wide market prospects and popularization value.
Owner:XIANGYANG XINGFA CHEM CO LTD +1

A coal mine wastewater retreatment device

This invention provides a coal mine wastewater retreatment device, comprising a treatment tank with two sets of symmetrically distributed support legs fixed at the bottom. A filter screen is installed inside the treatment tank. An inlet pipe is connected to the top of one side of the treatment tank, and an outlet pipe is connected to the bottom of the other side. An adsorption mechanism for removing iron-containing impurities is installed at the top of the treatment tank, comprising a magnetic column with two symmetrically distributed circular plates fixed to its outer side. The coal mine wastewater retreatment device provided by this invention solves the problem that existing treatment devices' filters are limited to filtering coal slag and are not suitable for cleaning iron-containing impurities in coal mine wastewater. This results in iron-containing impurities mixing inside the coal mine wastewater and entering the environment along with the wastewater discharge, leading to high iron content in the environmental water and making the water prone to turbidity due to reaction with oxygen in the air.
Owner:陕西小保当矿业有限公司

Manipulator for steel slag processing, steel slag processing system and method based on image processing

The present invention relates to the field of environmental protection technology, and in particular to a manipulator for steel slag processing, a steel slag processing system and method based on image processing, used in steel slag processing. The manipulator includes a base, a first moving hand provided on the base, a second moving hand and a motion control mechanism; the first moving hand includes a plurality of evenly distributed first fingers, the second moving hand includes a plurality of evenly distributed second fingers, and the first fingers and the second fingers are arranged opposite to each other; the motion control mechanism controls the movement of the first moving hand and the second moving hand between a first state and a second state. Through a special manipulator structure, scrap steel with a high iron content is grabbed or sieved and fished out from the granulated steel slag, and then combined with image processing technology, the scrap steel is grabbed in a confined space, and the scrap steel is sorted out while avoiding environmental pollution.
Owner:BEIJING TANLONG ENVIRONMENTAL TECH CO LTD

Preparation method of high-loading-capacity iron diatomic catalyst

The invention discloses a preparation method of a high-loading-capacity iron diatom catalyst, which is characterized in that iron nitrate nonahydrate and small biological molecule guanine are used as raw materials, and the iron diatom catalyst is directly synthesized through self-assembly and high-temperature pyrolysis methods. The synthesis process is simple to operate, low in manufacturing cost and high in sustainability, the obtained material has curled two-dimensional morphology, high nitrogen content (22-32 at%) and metal loading capacity (the highest iron content can reach 9.7 wt%), and the conversion rate of 92.3% and the selectivity of 96.2% can be achieved in the reaction for preparing phenol through selective oxidation of benzene.
Owner:FUZHOU UNIV

Method for smelting copper by reducing copper sulfide ore through hydrogen

The method comprises the following steps: uniformly mixing copper sulfide concentrate powder with a binder and water, pelletizing, drying, adding into an electric arc furnace, heating to 1500-1600 DEG C, melting to form a molten pool, and introducing hydrogen into the molten pool; in the reaction process, pellets are continuously added into the electric furnace, and hydrogen is introduced into the electric furnace. And after the molten metal in the electric arc furnace reaches a certain amount and the pellets added into the furnace completely react, hydrogen feeding is stopped, oxygen is fed into the molten metal, iron in the molten metal is oxidized into FeO, and the FeO enters slag. And if the iron content in the molten metal is less than 0.5%, stopping blowing oxygen, pouring out slag for extracting iron, casting copper into an electrode plate, and carrying out anode refining to prepare electrolytic copper. And the slag is poured into another electric arc furnace, hydrogen is blown into a molten pool, a chemical reaction is carried out to obtain FeO + H2 = Fe + H2O, the obtained molten iron is used for steelmaking, and smoke heat is used for power generation.
Owner:GUANGXI CHIHAI RESOURCE CIRCULATION TECHNOLOGY CO LTD

Method for producing high-zinc high-iron acid solution through zinc hydrometallurgy and removing iron in oxygen pressure kettle at medium temperature

The invention belongs to the technical field of zinc smelting, and discloses a method for producing a high-zinc high-iron acid solution through zinc hydrometallurgy and removing iron in an oxygen pressure kettle at medium temperature. According to the oxygen-enriched pressurized direct leaching process based on zinc hydrometallurgy, in order to improve various economic and technical indexes, a high-zinc and high-iron acid solution is produced after process technology optimization is carried out. Then, the first-stage high-zinc high-iron acid solution is treated, an oxygen pressure kettle medium-temperature iron removal method is adopted, the iron content of the obtained iron-removed solution is 0.5-1.5 g / L, the iron-removed solution is fed to neutralization iron removal operation, the dosage of a neutralizer and the dosage of an oxidizing agent are reduced, and a qualified iron-removed supernatant solution is obtained; and hematite with iron content of more than or equal to 55% in the slag sample is obtained, and byproducts have value of sale. According to the method, efficient separation of zinc and iron is achieved, the slag rate of the system is reduced, and safe, continuous and stable operation of the full-wet-process pressure leaching zinc smelting system is guaranteed.
Owner:HULUN BUIR CHIHONG MINING CO LTD

Method for detecting iron content in sodium hypochlorite

The invention relates to a method for detecting the iron content in sodium hypochlorite, and belongs to the technical field of analytical chemistry detection. The method comprises the following steps: adjusting the pH value of a sodium hypochlorite solution sample, sequentially adding a reducing agent and a buffer solution, and pre-treating the sodium hypochlorite sample to neutralize the strong oxidizing property of the sodium hypochlorite sample and adjust the pH value of the system; then adding a color developing agent to enable the iron ions to form a stable colored complex, finally determining the absorbance by adopting a spectrophotometer under a specific wavelength, and calculating the iron content through a standard curve. The method is simple and convenient to operate and high in adaptability, interference of oxidability and impurity metal ions can be effectively eliminated, the detection sensitivity, accuracy and repeatability are remarkably improved, and the method is suitable for quality control and conventional analysis of a high-purity sodium hypochlorite product.
Owner:重庆天原化工有限公司

Method for testing content ratio of ferrous iron to ferric iron in glass

The invention relates to the field of glass detection, and particularly discloses a method for testing the content ratio of ferrous iron to ferric iron in glass. The method specifically comprises the following steps: washing a to-be-detected glass sample, grinding into micro powder, drying, respectively taking the same amount of glass micro powder, and marking as a sample 1 and a sample 2; divalent iron can be converted into ferric iron by adding perchloric acid into the sample 1, and the test result is the content of total iron in the glass. And dimethyl silicone oil is added into the sample 2 so as to isolate air and prevent ferrous iron from being oxidized into ferric iron in the testing process to influence the experiment result. According to the method, the proportion of Fe < 2 + > to Fe < 3 + > in an unknown glass sample can be simply and quickly obtained, the result is accurate and reliable, the test period is short, and the working efficiency is greatly improved.
Owner:SICHUAN HONGKE INNOVATION TECH CO LTD

Method for producing adsorbent, and adsorbent

PCT designated stageWO2026140444A1Iron sulfateAlkaline water
Provided is a novel method for producing an adsorbent comprising an iron compound and having a large adsorption capacity. An adsorbent having a specific surface area of 200 m2 / g or more, a primary particle size of 10 nm or less, an iron content of 450 g / kg or more, and a moisture content of 100 g / kg to 300 g / kg can be obtained by the method for producing an adsorbent, the method including: a first step for adding a polyferric sulfate aqueous solution to an alkali aqueous solution to form a slurry; a second step for adjusting the pH of the slurry to 5.0 to 9.0; and a third step for subjecting the slurry to solid-liquid separation, washing the obtained cake, and adjusting the moisture content of the washed cake.
Owner:TITAN IND INC

Method for on-line prediction of iron content in copper flash smelting copper slag and model construction

The invention relates to the technical field of non-ferrous metal smelting, in particular to a method for predicting the iron content in copper flash smelting copper slag on line and model construction, starting from the actual incidence relation of copper slag and production input, model training-verification-testing is carried out through input data and output data of historical copper slag production, and the iron content in the copper flash smelting copper slag is predicted. And the input data of the copper flash smelting copper slag in a certain time period are obtained in real time and serve as model input to be substituted into the prediction model for on-line operation, the predicted value of the iron content in the copper slag discharged at the corresponding time point is obtained in real time, the problem that input data and output data of the prediction model constructed in the prior art are not matched is solved, and the prediction accuracy is improved. And online accurate prediction of the iron content in the copper flash smelting copper slag is realized.
Owner:JIANGXI UNIV OF SCI & TECH

Composite balling agent containing red mud and its use

This invention discloses a composite pellet binder containing red mud and its application, belonging to the technical field of binders for metallurgical pelleting. The binder uses red mud, a waste residue from the alumina industry, as the main raw material, combined with functional additives. By mass percentage, red mud accounts for 73%~87%, with the remainder being functional additives. This invention, through multi-component synergistic formulation, solves the industry pain points of poor compatibility with strong alkalinity and insufficient self-binding performance of red mud. The prepared binder can directly replace bentonite used in pelleting, exhibiting superior pelletizing performance at the same addition amount. Simultaneously, it can increase the iron content of pellets by 0.248~0.62 percentage points, reduce ironmaking waste emissions, and possess significant environmental and economic benefits. It is compatible with existing pelleting production processes, requires no new equipment, and is easy to industrialize.
Owner:JIANPING XINGDA MINING CO LTD

Method for producing iron ore pellet

A pellet production method that can suppress bursting of green pellets can be provided. The method for producing an iron ore pellet includes grinding iron ore with iron content of 63 mass % or less to obtain ore powder, in which a volatile matter of the iron ore is 3.3 mass % or more, the ore powder has a cumulative 90% diameter of 150 μm or less in a volume-based particle size distribution and a particle size distribution index based on the harmonic mean diameter of 14,700 or more and 510,000 or less.
Owner:JFE STEEL CORP

Process for recovering titanium dioxide

A process for recovering titanium dioxide from a titanium-bearing material, the process including the steps of: leaching the titanium-bearing material in a first leaching step at atmospheric pressure and at a temperature of 70 to 97° C. with a first lixiviant to produce a first leach solution comprising undissolved first leach solids that include a titanium content and a first leach liquor, the first lixiviant comprising hydrochloric acid at a concentration of less than 23% w / w; separating the first leach liquor and the undissolved first leach solids; leaching the first leach solids in a second leaching step at atmospheric pressure and at a temperature of 60 to 80° C. with a second lixiviant in the presence of a Fe powder reductant to produce a second leach solution comprising undissolved second each solids and a second leach liquor that includes a leached titanium content and iron content, the second lixiviant comprising a mixed chloride solution comprising less than 23% w / w hydrochloric acid and an additional chloride selected from alkali metal chlorides, magnesium chloride and calcium chloride, or mixtures thereof; separating the second leach liquor and the undissolved second leach solids; and thereafter separating the titanium dioxide and the iron content from the second leach liquor by precipitation, and regenerating the second lixiviant for recycle to the second leaching step.
Owner:COMMONWEALTH SCI & IND RES ORG

Metallurgical treatment method for high-grade cobalt-containing copper sulfide concentrate

The invention relates to a metallurgical treatment method of high-grade cobalt-containing copper sulfide concentrate, which comprises the following steps: carrying out first-stage presoaking on the cobalt-containing copper sulfide concentrate to obtain first-stage presoaking liquid and first-stage presoaking slag; grinding the first-stage presoaking residues until the particles of the first-stage presoaking residues are smaller than 200 meshes and account for 95 wt% or above, introducing oxygen, and performing second-stage presoaking to obtain second-stage presoaking liquid and second-stage presoaking residues; the copper grade of the cobalt-containing copper sulfide concentrate is 60 wt% or above. In the presoaking process, a large amount of copper oxide minerals and iron compounds are leached into a solution, so that the iron content in the presoaking residues is reduced, and generation of refractory substances such as copper ferrite is reduced; and compared with the raw ore amount, the ore amount is reduced by 40% or above, the follow-up recovery difficulty is remarkably reduced, and the leaching rate of the cobalt-containing copper sulfide concentrate is effectively increased.
Owner:HUAGANG MINING CO LTD +2

Device for detecting iron content of glaze for Jianzhan production

The utility model discloses a device for detecting the iron content of glaze in Jianzhan production. The device comprises a main body assembly, wherein the main body assembly comprises a workbench, a detection box, a magnet tester, a circular plate and a hydraulic cylinder; the limiting assembly comprises a placing disc, a movable groove, a guide frame, a clamping block, a rotating gear, a spring rod and a sliding plate; the containing disc is fixedly connected to the top of the circular plate, the movable groove starts from a top center shaft of the containing disc, the guide frame is fixedly connected to the bottom of the inner wall of the containing disc, the clamping block is rotationally connected to one side of the inner wall of the guide frame, the rotating gear is fixedly connected to one end of the bottom of the clamping block, and the sliding plate is slidably connected to the inner side wall of the guide frame. The utility model relates to a glaze detection device, in particular to a glaze detection device, and aims to solve the problem that when an existing detection device is used for detecting glaze produced by Jianzhan, a vessel containing the glaze produced by Jianzhan is generally directly placed at a detection position for detection, the vessel is easily influenced by external factors in the detection process and is scattered, and the detection result of the glaze produced by Jianzhan is influenced.
Owner:NANPING JIANYANG GUIXITANG CERAMICS CO LTD