2862 results about "Ore concentrate" patented technology

The invention belongs to the technical field of ironmaking, and particularly discloses a method for producing titanium-rich direct reduction iron and high-titanium slag by using vanadium titano-magnetite, which comprises the following steps: preparing vanadium titano-magnetite raw ore into vanadium-titanium-iron concentrate powder and titanium concentrate powder, mixing the vanadium-titanium-iron concentrate powder and the titanium concentrate powder with a binder to prepare iron-titanium concentrate composite green pellets, and oxidizing and roasting to obtain the titanium-rich direct reduction iron and high-titanium slag with the compressive strength of more than 2000N / pellet and the compressive strength of more than 2000N / pellet. The reduction expansion rate of the iron-titanium concentrate composite high-titanium pellets is smaller than 20%; the iron-titanium concentrate composite high-titanium pellets are subjected to a direct reduction reaction in a shaft furnace, and titanium-rich direct reduced iron with the metallization ratio larger than or equal to 85% is obtained; and molten iron and high-titanium slag are obtained after the obtained titanium-rich direct reduced iron is subjected to melting separation through a melting separation electric furnace. According to the method, the iron-titanium concentrate composite high-titanium pellets meeting the direct reduction smelting requirement of the gas-based shaft furnace are prepared and applied to the gas-based shaft furnace for direct reduction production of the titanium-rich direct reduction iron, high-quality titanium-rich raw materials can be provided for smelting titanium slag in a melting electric furnace, and the problem that the recovery rate of titanium resources in existing vanadium titano-magnetite is low is effectively solved.

The invention discloses a method for synchronously improving the recovery rate of copper and cobalt in high-oxidation-rate copper-cobalt ore and low-grade copper oxide-cobalt concentrate, which comprises the following steps: (1) carrying out copper sulfide flotation on the high-oxidation-rate copper-cobalt ore to obtain high-copper tailings; (2) the low-grade copper-cobalt concentrate and the high-copper tailings are mixed according to the mass ratio of 1: (1-2), and mixed ore is obtained; (3) the obtained mixed ore and a sulfuric acid solution system leaching agent are stirred and mixed, and slurry is obtained; (4) leaching the obtained slurry at normal temperature, and carrying out solid-liquid separation to obtain leached residues and leached liquid; (5) carrying out washing, extraction, reverse extraction and electrodeposition on the obtained leaching residues to obtain metal copper; and removing iron from the raffinate, and adding magnesium oxide into the iron-removed liquid for precipitation to obtain crude cobalt hydroxide. According to the method, the high-copper tailings and the low-grade copper oxide cobalt concentrate are subjected to the processes of ore blending, size mixing, normal-temperature sulfuric acid leaching and the like, the final copper leaching rate is 95% or above, and the cobalt leaching rate is 70% or above.

The invention discloses a rapid method for determining the grade of target elements in concentrate based on mineral dissociation degree, and the grade of the target elements in the concentrate under a certain fineness condition is calculated according to the dissociation degree of target minerals in a raw ore sample under the certain fineness condition and the content of the target elements in the target minerals in the raw ore sample. By means of the method, the grade of the target element in the concentrate under the specified fineness condition can be calculated more quickly and more effectively, the beneficiation effect under the fineness condition can be predicted in advance when beneficiation operation is not conducted, and powerful data support is provided for formulation of the beneficiation technological process.

The invention provides a treatment method of copper-nickel concentrate rich in platinum group metals, which comprises the following steps: feeding the copper-nickel concentrate rich in platinum group metals and a first flux into a smelting furnace, and introducing first oxygen-enriched gas for smelting; copper matte and a second flux are continuously fed into a first converting furnace, and second oxygen-enriched gas is continuously introduced for first converting; raw copper and a third flux are fed into the oxygen inclined blowing rotary converter, and oxygen is introduced for second blowing; the crude copper is fed into an anode refining furnace, and air and a first reducing agent are introduced for fire refining; casting the copper liquid into an anode plate, and carrying out electrolytic refining on the anode plate; feeding the first converting slag, the second converting slag, a second reducing agent and a vulcanizing agent into a dilution electric furnace for slag dilution to obtain low-nickel matte and dilution slag; and the low-nickel matte is fed into a third converting furnace, air or oxygen-enriched air is introduced for third converting, and the problem that the recovery rate of nickel metal elements and platinum group metals in the copper-nickel concentrate rich in the platinum group metals is low is solved.

The invention discloses a method for low-carbon preparation of a high-reactivity blast furnace burden from magnetite concentrate and the blast furnace burden, and belongs to the technical field of ferrous metallurgy. According to the method, an iron-containing raw material, an organic-inorganic composite binder, a multifunctional additive and water are sequentially subjected to uniform mixing, high-pressure double-roller forming and consolidation, and the finished product cold pressing block is obtained. According to the method, the strength and reducibility of the cold pressing block can be remarkably improved by optimizing the particle size composition of the raw materials and adding the multifunctional additive, the technological process is simple, a high-temperature process is not needed, and carbon emission is low.

The invention relates to a flotation method for niobium-containing minerals, and belongs to the technical field of mineral separation. The method comprises the steps that niobium-containing ore is subjected to crushing, ore grinding and size mixing, obtained ore pulp is subjected to weak magnetic treatment to remove strong magnetic minerals, after the pH of magnetic separation tailings is adjusted, a flotation reagent containing an iron mineral inhibitor and an amine collecting agent is added for silicon-niobium bulk flotation, and after the pH of obtained silicon-niobium bulk concentrate is adjusted, the obtained silicon-niobium bulk concentrate is subjected to flotation separation. And a flotation reagent containing a hydroximic acid metal organic complex collecting agent and a siliceous mineral inhibitor is added for silicon-niobium separation flotation, and niobium concentrate is obtained. According to the method, iron gangue mineral removal is achieved through step-by-step flotation by means of the amine collecting agent, silicon separation is achieved by means of the hydroximic acid metal organic complex collecting agent, efficient enrichment of the niobium mineral is achieved, the step of strong magnetic iron removal is avoided, the process is simplified, and the loss rate of the niobium mineral is reduced.

The invention provides a treatment method for low-grade multi-metal gold concentrate, and relates to the technical field of comprehensive utilization of minerals. According to the treatment method of the low-grade multi-metal gold concentrate, most of iron and copper form iron-copper matte through pyrogenic smelting, meanwhile, gold is captured into the iron-copper matte, then iron-copper matte powder is obtained after water quenching and ball milling, the iron-copper matte powder is subjected to oxidation ammonia leaching, copper in the iron-copper matte is extracted, and the iron-copper matte powder is subjected to oxidation ammonia leaching to obtain the low-grade multi-metal gold concentrate. The obtained copper-containing ammonia leaching liquid is subjected to a traditional extraction-reverse extraction-electrodeposition process to obtain an electrodeposited copper product, ammonia leaching residues obtained after copper extraction are subjected to cyanidation leaching, gold in the ammonia leaching residues is extracted, cyanidation liquid is subjected to a traditional gold extraction process to obtain a gold product, the cyanidation tailings mainly comprise iron sulfide, the content of iron and sulfur in the tailings is high, and the content of sulfur in the tailings is high. And the subsequent cinder can be directly sold as an iron-making raw material. The amount of iron-silicon slag generated by the method is extremely low, and compared with a traditional molten pool smelting method, the comprehensive utilization rate of iron in the multi-metal gold concentrate is greatly increased.

The invention relates to the technical field of rare earth ore concentrate treatment, in particular to a rare earth ore concentrate treatment method. The treatment method of the rare earth concentrate comprises the following steps that the rare earth concentrate, a calcium-containing compound, silicon dioxide and carbon powder are mixed and roasted, and roasted ore is obtained; water is added into the roasted ore for size mixing, and size is obtained; and acid is added into the slurry for reaction, solid-liquid separation is carried out, and acid leaching residues and rare earth chloride feed liquid are obtained. The method has the advantages of being simple in technological process, high in rare earth recovery rate, short in reaction time, environmentally friendly, low in cost and diversified in rare earth grade applicability. The silicon dioxide can increase the decomposition activity of bastnaesite and monazite in the rare earth ore, rare earth compounds easy to leach can be generated, and therefore the decomposition rate of the rare earth ore concentrate is increased, and calcium can also play a role in fixing fluorine. According to the method, the rare earth decomposition rate is 98% or above, and the rare earth leaching rate is 96% or above.

The invention relates to the technical field of mineral processing data processing, in particular to a preparation method of a high-calcium fluorite and barite paragenic ore combined inhibitor, which comprises the following steps: collecting multi-source process mineralogy data output by an X-ray fluorescence spectrometer, an automatic mineral analyzer and the like, converting the multi-source process mineralogy data into a structured format, and constructing a process mineralogy database; based on historical data of a database, a random forest algorithm is adopted to train a correlation model, the correlation rule of mineral characteristics such as calcite content, fluorite particle size distribution and barite monomer dissociation degree and the inhibitor ratio is learned, and parameters of the optimization model are fed back through a flotation test. The combined inhibitor solves the problem of selective separation caused by similar surface properties through a synergistic effect of covering active sites of fluorite calcium by modified water glass, regulating active sites of barite barium by citric acid and assisting in enhancing inhibition by modified starch, and solves the problem of low efficiency of multi-source data integration through structured data processing and model closed-loop optimization; the flotation separation efficiency and the concentrate grade are improved.

The invention discloses a method for converting niobium minerals in niobium rough concentrate into pyrochlore. The method comprises the following steps: (1) mixing the niobium rough concentrate with a modifier, a fluorine-containing reagent, a reducing agent and a binder, and carrying out compression molding; and (2) roasting the mixed blank for a set time, preserving heat, and quenching to obtain pyrochlore type rough concentrate. The method comprises the following steps: (1) carrying out magnetic separation on pyrochlore type rough concentrate; (2) performing heating and acid leaching on the magnetic separation tailings; and (3) carrying out flotation to obtain niobium concentrate. According to the method, iron components in the rough concentrate are reduced into magnetic iron minerals, niobium minerals are converted into non-magnetic pyrochlore, follow-up niobium-iron separation is facilitated, and the grade of niobium in the niobium concentrate obtained through production can be effectively improved; and the method is high in adaptability to niobium rough concentrate, is also applicable to alkaline or acidic niobium rough concentrate, is relatively small in gangue mineral change and low in conversion reaction temperature, and has the advantages of energy conservation and emission reduction compared with other regulation and control processes.

The invention discloses a flash and top blowing coupled molten pool tin smelting device and method, and belongs to the technical field of pyrogenic smelting of crude tin. Tin concentrate, fuming enriched tin middling and powdery tin smoke dust are subjected to ore blending with a flux and then are smelted; adding a carbonaceous reducing agent into the molten pool, and reducing to form a CO reducing atmosphere layer at the upper part of the slag layer; and blowing fluidized bed furnace roasting dry powder to the upper part of the CO reducing atmosphere layer, carrying out flash reduction smelting on the fluidized bed furnace roasting dry powder, enabling the fluidized bed furnace roasting dry powder which is not subjected to flash reduction smelting to enter a molten pool, and continuing to carry out a reduction stage in top-blowing molten pool smelting, so that flash and top-blowing coupling is realized, and crude tin is prepared. According to the invention, flash melting pool smelting and top-blowing melting pool smelting are effectively coupled together, fuel consumption can be reduced by about 20%, and the bed capacity is obviously improved.

The invention discloses a quality-divided treatment and recycling method for lead-zinc beneficiation wastewater, and belongs to the technical field of beneficiation wastewater treatment.The method comprises the steps that beneficiation tail water is introduced into a Fenton reaction tank, a catalyst is added firstly, then hydrogen peroxide is added, a Fenton oxidation reaction is conducted, after the Fenton oxidation reaction is finished, the beneficiation tail water is introduced into a coagulation reaction tank, caustic soda liquid is added, and the mixture is stirred and mixed uniformly; adding a precipitating agent, a flocculating agent and a stabilizing agent, and flocculating and settling the precipitate; introducing the beneficiation tail water added with the treatment agent into a honeycomb inclined tube sedimentation tank, further flocculating and settling, then returning flocculated precipitates in a bottom tank to a coagulation reaction tank, and discharging redundant bottom mud into a tailing pond; and settled clear water enters a clear water tank and is used as production water for ore grinding classification and flotation operation. According to the invention, through quality-divided treatment-quality-divided recycling of the beneficiation wastewater, it is ensured that the beneficiation tail water meets the requirements of ore grinding and flotation production indexes, the treatment cost of concentrate overflow water and filtered water is reduced, and the purpose of 100% recycling of the beneficiation wastewater after quality-divided treatment is achieved.

The invention provides a beneficiation method of micro-fine particle low-grade tin ore. The beneficiation method comprises the following steps: (1) feeding; (2) physical reselection: a centrifugal drum of the physical concentrator rotates horizontally, and ore pulp is fed to the inner surface of the drum by an ore feeding device and is driven by the centrifugal drum to rotate along with the drum; (3) thickening; (4) the flotation process comprises the following steps: S1, feeding; s2, pulp mixing, wherein a flotation reagent is added into the ore pulp; the flotation reagents comprise a desulfurization flotation reagent and a floating tin flotation reagent, the desulfurization flotation reagent is added into the ore pulp for desulfurization flotation, and then the floating tin flotation reagent is added for floating tin flotation; s3, air inflation is carried out; s4, separating; and (5) secondary concentrate upgrading is conducted, specifically, flotation concentrate enters the physical concentrating machine again, secondary upgrading is conducted, and tin concentrate is obtained. According to the beneficiation method, the tin-containing grade of a tin concentrate product reaches 50% or above, and the comprehensive recovery rate reaches 55% or above.

The invention discloses a beneficiation method for efficiently recovering barite from heat treatment drilling waste. The beneficiation method comprises the following steps that (1) the drilling waste containing the barite is subjected to wet screening classification; (2) performing magnetic separation on the undersize product to obtain a magnetic product and a non-magnetic product; (3) carrying out primary roughing and primary concentration on the non-magnetic product to obtain a barite powder product 1; and (4) the roughing tailings are subjected to scavenging for three times, scavenged concentrates are combined and then subjected to fine selection for two times, and a barite powder product 2 is obtained. According to the method, barite in the heat treatment drilling waste is efficiently recycled by adopting a beneficiation method, two different grades of barite powder products are obtained and can serve as drilling fluid raw materials to be recycled, resource utilization of the waste is achieved, and meanwhile environmental hazards are reduced.

The invention discloses a mineral separation magnetic separator for muddy tungsten polymetallic ore and a recovery system for recovering black tungsten, and relates to the technical field of mineral separation of the muddy tungsten polymetallic ore. The blending box is used for blending raw material ore pulp with the concentration of 30%; the bottom of the blending box is transmitted to the permanent magnet separator through a transmission pump connecting pipeline, and a return pipeline I and a circulating pump I are mounted on the permanent magnet separator; magnetically separating the raw ore pulp by a permanent magnetic separator to obtain weak magnetic concentrate pulp; the bottom of the permanent magnetic separator is provided with a transmission pipeline and connected with the high-intensity magnetic separator, and the transmission pipeline is connected with a transmission pump; the concentrate thickener is used for blending and concentrating to obtain concentrated ore pulp with the concentration of 25-35%; a centrifugal concentrator; a return pipeline II and a circulating pump II are arranged on the centrifugal separator, and the number of cycles is three; and the frequencies of the centrifugal separator are respectively 50HZ, 40HZ and 30HZ. The technical problems that argillization tungsten ore cannot be recycled, and materials with proper tungsten concentration cannot be selected through magnetic separation and gravity separation, and the recycling difficulty is large are solved.

The invention provides a beneficiation and enrichment method for high-molybdenum oxide ore, which comprises the following steps of: performing fraction magnetic separation on a product after ore grinding, regrinding magnetic separation coarse particle tailings, mixing the reground product with magnetic separation fine fraction tailings to perform low-potential sulphide ore flotation, performing oxidized ore flotation on sulphide ore flotation tailings, and the like. And finally, the molybdenum concentrate with the high recovery rate and grade is obtained, the molybdenum ore separation and enrichment effect is achieved, and the fine disseminated-particle-size refractory molybdenum oxide ore resources in the high-oxidation-type molybdenum ore are effectively and comprehensively recycled. In order to quickly optimize and obtain the optimal condition of oxidized ore flotation, the flotation inhibitor with the good inhibition effect is determined through the pure ore flotation test, the flotation collecting agent with the high selectivity is selected through the molecular simulation calculation method, and the flotation efficiency and selectivity are improved. The method provided by the invention can be widely applied to the fields of development of high-oxidation molybdenum ore mines and recycling of fine-fraction refractory molybdenum oxide ore resources in tailings after sulfuration flotation.

The invention belongs to the technical field of mine ore washing equipment, and relates to improvement of the production efficiency of an elutriation machine, in particular to an elutriation system for efficient iron ore washing and separation and a control method thereof.The elutriation system comprises a concentrate pulp mixer, an overflow groove, an elutriation barrel, a supporting platform, an ore washing water path and a control system; the concentrate pulp mixer is arranged above the elutriation barrel, the overflow groove is formed in the lower portion outside the concentrate pulp mixer and is in an inclined table shape, the tailing outlet is formed in the bottom of the inclined table, the middle of the interior of the overflow groove is connected with the elutriation barrel, a middle barrel body of the elutriation barrel is divided into an inner barrel body and an outer barrel body, and multiple sets of magnet exciting coils are arranged between the inner barrel body and the outer barrel body. The lower part of the inner cylinder is connected with an inverted-cone cylinder; a stirring impeller is arranged below the concentrate pulp mixer; the lower part of the elutriation barrel is filled with direct-flow water and rotational flow water through an ore washing water path; the system automatically recognizes working condition changes according to the ore feeding property, the material amount, field data and database set values, the optimal operation mode is selected, a magnetic field, an ore removal valve, a water supply valve and the like are controlled, efficient and intelligent separation of iron ore powder is achieved, and the optimal ore washing effect is achieved.

The invention belongs to the technical field of mineral separation processes, and particularly relates to a magnetic separation process for low-grade potassium feldspar ore, which comprises the following steps: (1) crushing: crushing low-grade potassium feldspar raw ore; (2) ore grinding: grinding the fine particle raw materials to obtain ore pulp; (3) desliming: desliming the ore pulp to obtain a material containing magnetite and other weakly magnetic minerals; (4) removing strong magnetic magnetite through weak magnetic separation; (5) superconducting magnetic separation: carrying out superconducting magnetic separation on the magnetite-removed material to obtain potassium feldspar concentrate; (6) concentration is conducted, specifically, concentrate is subjected to concentration, and residual impurities are removed; and (7) dewatering and drying: dewatering and drying the concentrated concentrate to obtain a final product. According to the method, a two-step magnetic separation process is adopted for the low-grade potassium feldspar raw ore, weakly magnetic iron-containing impurities in the potassium feldspar raw ore are effectively removed, the impurity removing and whitening effects are achieved, the potassium feldspar powder with high purity and high whiteness is obtained, and the method is free of pollution and suitable for large-area application and popularization.

The present invention discloses a method for separating niobium from niobium-containing ore, wherein the niobium coarse concentrate is mixed with a sulfiding agent to obtain a mixture, and the mixture is subjected to reduction smelting to obtain a reduced ore, and a niobium-rich product is directly obtained from the reduced ore, or the niobium-rich product is obtained after post-processing the reduced ore. Compared with the traditional reduction smelting process, the method for separating niobium from niobium-containing ore of the present invention can achieve separation of niobium from slag while achieving separation of slag and iron, and enrich niobium to obtain a high-grade niobium-rich product, which can be purified through further metallurgical processes. The process method of the present invention has strong operability, simple process, low requirements on load-bearing smelting equipment, and is easy to promote and apply industrially.

The invention discloses a comprehensive utilization process for kaolin tailings. The comprehensive utilization process comprises the following steps: scrubbing the kaolin tailings; the scrubbed kaolin slurry is sieved by a 5mm linear sieve, waste rocks of + 5mm are used as sand-gravel materials, and the waste rocks of-5mm are classified into 2-5mm, 0.1-2mm and-0.1 mm; the method comprises the following steps: grinding and grading ore with the particle size of 2-5mm, returning and regrinding the ore with the particle size of + 0.6 mm, removing tail mud with the particle size of-0.045 mm by grading the ore with the particle size of-0.6 mm, carrying out magnetic separation on the ore with the particle size of 0.045-0.6 mm, carrying out 1-2 sections of strong magnetic separation on the obtained magnetic separation concentrate to obtain strong magnetic concentrate, heating, adding chemicals, scrubbing, and carrying out chemical removal, desliming and washing to obtain primary photovoltaic glass sand and graded fine sand; the method comprises the following steps of: grinding and screening the ore with the particle size of 0.1-2mm, grinding and screening the ore with the particle size of + 0.6 mm until the ore with the particle size of-0.6 mm is completely ground, carrying out spiral chute reselection on the ore with the particle size of-0.6 mm to obtain heavy ore and light ore, carrying out 2-3 sections of magnetic separation on the light ore to obtain magnetic concentrate, carrying out flotation to obtain mica, carrying out graded desliming on the product in a flotation tank, and carrying out graded fine sand with the particle size of-0.1 mm; carrying out heating, chemical adding and scrubbing at the particle size of 0.1-0.6 mm, and then carrying out chemical removal, desliming and washing to obtain secondary photovoltaic glass sand; the yield of the obtained product is higher, and the product index is better.

The invention belongs to the field of flotation, and particularly relates to a lithium-containing china clay ore flotation method which comprises the following steps: carrying out flotation on to-be-separated minerals of lithium-containing china clay ore in a flotation reagent containing a collecting agent to obtain lithium china clay ore concentrate; the collecting agent is characterized in that the collecting agent is a compound shown in the formula 1 # imgabs0 #; and / or a product obtained by carrying out an addition reaction on a formula 2 (R-NH2) and a formula 3 # imgabs1 # in advance and then carrying out a saponification reaction with an alkali. According to the collecting agent for the lithium china clay ore, the component shown in the formula 1 is innovatively adopted as the collecting agent for the lithium china clay ore, in this way, on the basis of intermolecular coupling of beta-NH-and-COOM, the collecting agent can accidentally adapt to the surface characteristics of target minerals of the lithium china clay ore, high-selectivity collecting can be achieved, and effective collecting under the low-temperature and mild conditions can be achieved.

The invention relates to the technical field of jigging magnetic flotation columns, and discloses a jigging magnetic flotation column which comprises an inner cylinder, a magnet exciting coil is fixedly connected to the periphery of the inner cylinder, and an outer cylinder is arranged on the periphery of the magnet exciting coil; a conical concentrator is fixedly connected to the bottom of the inner cylinder, and a pulsation mechanism is arranged on one side of the conical concentrator; and the inner cylinder is connected with a feeding mechanism. The technical problems that a large amount of washing water needs to be used for elutriating the magnetic separator, and the concentration of reagents is affected by adding water into a flotation column are solved, the magnetic separation method for magnetite by applying magnetic levitation is possible, the magnetic separation magnetic field intensity is synchronously and reversely adjusted, and the problems of overflow tailing black running and magnetic ore concentrate magnetic inclusion caused by jigging pulsation are solved; the accidents that the ore pulp of the flotation column runs out of the groove and overflows and the elutriation magnetic separator runs out of the groove and overflows are prevented, and the product recovery rate and the concentrate index are also improved.

The invention discloses an environment-friendly flotation separation method for copper-lead bulk concentrate. The method comprises the following steps: (1) preparing copper-lead mixed ore pulp; (2) flotation pretreatment of copper-lead mixed ore pulp; (3) carrying out flotation on the copper-lead mixed ore pulp; and (4) performing solid-liquid separation to obtain concentrate. The flotation method has the advantages that the novel flotation method capable of efficiently and environmentally separating complex and difficult-to-separate copper-lead bulk concentrate is provided, and the copper grade and the copper recovery rate can be effectively improved; meanwhile, the selected chemicals are environment-friendly and nontoxic chemicals, so that the chemicals are wide in source, low in price and very friendly in environmental protection requirement; the method is not only a key for solving the current technical bottleneck, but also an inevitable requirement for promoting green and sustainable development of the mining industry.

The invention discloses a multi-component nano inhibitor for flotation separation of high-argillaceous copper sulphide ore and application, the nano inhibitor is a nano calcium carbonate-calcium oxide-sodium humate coating body, the nano inhibitor is applied to flotation separation of the high-argillaceous copper sulphide ore, collaborative optimization of slime inhibition and copper ore selective collection is achieved, and the flotation separation efficiency of the high-argillaceous copper sulphide ore is improved. And high-quality copper sulfide concentrate and sulfur concentrate are obtained. According to the method, the high specific surface area and the surface activity of the nano particles are utilized, under the weak alkaline environment without desliming, through the simple, convenient, economical and efficient mineral processing technology and reagent combination, efficient recovery of copper, gold and sulfur in the high-argillaceous ore is achieved, the use amount of lime is greatly reduced, and the technical problem of tailing sedimentation is solved.

The invention relates to an ion regulation inhibitor for preventing slurry from covering, application and a lepidolite ore beneficiation method. The invention discloses an ion regulation inhibitor for preventing slime from covering. The ion regulation inhibitor comprises a starch inhibitor, a sodium salt inhibitor and a metal ion regulator. The invention provides application of the ion regulation inhibitor capable of preventing the slime from covering in ore dressing of lepidolite ore. The invention provides a beneficiation method of lepidolite ore. The beneficiation method comprises the following steps: adding water into ore powder of the lepidolite ore to prepare ore pulp; a pH regulator, a collecting agent and the ion regulation inhibitor are added into the ore pulp for roughing, and roughing concentrate and roughing tailings are obtained; the ion regulation inhibitor is added into the roughing concentrate for concentration, and lepidolite concentrate is obtained; and a collecting agent is added into the roughing tailings for scavenging, and flotation tailings are obtained. The problems that an existing lepidolite ore beneficiation method is large in lithium ore loss, low in beneficiation efficiency and complex in process are solved.

The invention discloses a comprehensive recovery method for copper-nickel concentrate, which comprises the following steps: smelting the copper-nickel concentrate to obtain smelting slag and high-nickel copper matte which are layered up and down; performing side-blowing converting on the air-quenched and granulated high-nickel copper matte to obtain high-nickel converting slag which is layered up and down and qualified crude copper; the liquid smelting slag and the high-nickel converting slag are mixed for two-step reduction smelting, iron slag and copper-nickel alloy which are layered up and down are obtained through weak reduction, and reducing slag and molten iron which are layered up and down are obtained through strong reduction. According to the method disclosed by the invention, one-step removal of the Ni element is realized through side-blowing reinforced stirring of the granulated copper matte, so that application of the high-nickel copper concentrate to large-scale continuous copper smelting becomes possible. And meanwhile, through cooperative treatment of the smelting slag and the converting slag, short-process comprehensive recovery of Cu, Ni and Fe elements is achieved. The deeply depleted tailings are subjected to water quenching to form a calcium-silicon glass body which has a curing effect on heavy metal ions and is a high-quality building raw material, high-valued and full-quality utilization of mineral resources is realized, and the method is a brand-new technical route for widening the application range of raw materials, reducing cost and improving efficiency in a copper smelting plant.

The invention relates to magnetic mineral concentration equipment, and belongs to the technical field of mineral separation, the magnetic mineral concentration equipment comprises a magnetic flotation column cavity, an overflow groove, a stirring device, a feeding device, a magnet exciting coil and a microbubble generating device, and the magnetic flotation column cavity comprises a conical concentration device arranged at the bottom; the overflow groove is formed in the upper part of the magnetic flotation column cavity; the magnet exciting coil is arranged on the periphery of the magnetic flotation column cavity; the microbubble generation device is arranged at the lower part of the magnetic flotation column cavity and / or above the conical concentration device; the feeding device is communicated with the magnetic flotation column cavity and is used for conveying ore pulp to the magnetic flotation column cavity; the microbubble generating device is used for generating bubbles and conveying the bubbles to the magnetic flotation column cavity; the stirring device is arranged in the magnetic flotation column cavity and used for stirring ore pulp; strong magnetic and hydrophilic mineral particles in the stirred ore pulp are discharged through a conical concentration device to become concentrate, and foam formed by weak magnetic or non-magnetic and hydrophobic mineral particles is discharged through an overflow groove to become tailings.

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

The system is formed by combining and connecting a coarse crusher (1), an ore washing sieve (2), a large dry magnetic separator (3), a wet magnetic separation preselector (4), a fine crusher (5), a dry magnetic separation scavenging machine (6), an aggregate screening machine (7), a preselected concentrate dewatering sieve (8), a preselected tailing dewatering sieve (9), a preselected concentrate concentration magnetic separator (10) and a preselected concentrate filter (11). An ore discharge port of the coarse crusher (1) is connected with a feeding end at the upper part of the ore washing sieve (2), an oversize discharge port of the ore washing sieve (2) is connected with a feeding belt of the large dry magnetic separator (3), and an undersize discharge port of the ore washing sieve (2) is connected with an ore feed port of the wet magnetic preselector (4). Slurry on the surface of high-silt-content raw ore is washed off through screening and ore washing operation, and the ore blocking condition is reduced; dry separation and wet separation processes are combined, a large number of tailings are thrown out in advance, meanwhile, various building material products are produced, and the resource utilization rate is increased.

The invention discloses an iron-based composite binder for pelletizing of iron ore difficult to pelletize and a pelletizing method of the iron ore difficult to pelletize, and belongs to the technical field of pellet production. The iron-based composite binder comprises fine-grained magnetite concentrate, bentonite, humic acid, sodium carboxymethyl cellulose, borax and the like, the iron-based composite binder is prepared into slurry, the slurry is added into pellet raw materials containing iron ore difficult to pelletize to be mixed and pelletized, obtained green pellets are subjected to heat treatment, and finished pellets are obtained. According to the method, the use amount of the binder is obviously reduced, meanwhile, the proportion of the iron ore difficult to pelletize in the pellet raw materials can be increased, green pellets and finished pellets meeting the requirements are obtained, the iron grade of the pellets is guaranteed, the production cost of iron and steel enterprises is reduced, and energy conservation and emission reduction of the iron and steel industry are facilitated.