72 results about "Titanomagnetite" patented technology

The invention belongs to the technical field of steel smelting, and particularly discloses a comprehensive utilization method of vanadium titano-magnetite, which comprises the following steps: S1, preparing the vanadium titano-magnetite into pellets, and carrying out reduction reaction to obtain direct reduced iron; s2, a carbonaceous reducing agent and the direct reduced iron obtained in the step S1 are mixed and smelted in a melt separation electric furnace, and slag and molten iron are obtained; a slag former is not added in the smelting process, the purity of the titanium slag is improved through optimal design of the furnace profile of the melting electric furnace and combination of various smelting process control means, the problems that refractory materials of the melting electric furnace are excessively eroded, the service life is short, slag-metal separation is difficult, smelting is difficult to control and the like are solved, and the purposes of high-grade titanium slag and long service life of the melting electric furnace are achieved.

The invention discloses a magnetic separation, enrichment and recovery process for low-grade vanadium titano-magnetite, which belongs to the technical field of comprehensive utilization of vanadium titano-magnetite, adopts a combined mineral separation process of dry pre-enrichment and tailing discarding, wet grinding, concentration and refinement, combination of gravity and magnetism and middling retreatment, selects mature industrial equipment and optimizes the combination. High-efficiency dry pre-selection equipment, wet grinding equipment, a multi-section reselection and middling retreatment system and solid-liquid separation equipment are utilized, a large amount of tailings are discarded at the front end of a mine, iron and titanium are efficiently separated and comprehensively recycled in the middle main process, the recycling rate bottleneck is broken through through the middling retreatment technology, near-zero discharge of wastewater is achieved, and compared with a conventional process, water can be saved by 50-60%, and the economic benefit is high. According to the method, the grinding and separation cost is saved by 60-70%, the energy-saving effect is remarkable, the purposes of cost reduction, efficiency improvement, comprehensive utilization of resources and clean production are achieved, the production and technical problems of low-grade vanadium titano-magnetite mine enterprises in arid and water-deficient areas are effectively solved, and the method is suitable for large-scale production and application.

The invention relates to the technical field of comprehensive utilization of vanadium titano-magnetite resources, in particular to a flotation combined reagent and a flotation method for vanadium titano-magnetite associated ultralow-grade cobalt-nickel ore. The flotation combined reagent comprises a copper ammonia compound activating agent composed of copper sulfate, ammonium carbonate and sodium citrate, a compound inhibitor composed of sodium humate, tannic acid and sodium tripolyphosphate, a main collecting agent butyl xanthate, an auxiliary collecting agent alkyl hydroxamic acid and a foaming agent diethylene glycol monobutyl ether. According to the method, a technical system of bulk flotation process-novel collaborative reagent system is constructed, so that the technical problem of recycling associated ultralow-grade cobalt and nickel resources in the vanadium titano-magnetite iron separation tailings is successfully solved, the problem of low separation efficiency of ultralow-grade minerals is effectively solved, a complete and efficient technical scheme is formed, and the method is suitable for industrial production. And an innovative technical path is provided for comprehensive recovery of associated cobalt and nickel resources of the vanadium titano-magnetite.

The invention provides an efficient recovery method for vanadium titano-magnetite upgrading tailings, and belongs to the technical field of mineral separation. The method comprises the following steps: carrying out low-intensity magnetic separation, ball-milling crushing and two-stage low-intensity magnetic separation on the vanadium titano-magnetite upgrading tailings to obtain iron ore concentrate and low-intensity magnetic tailings; and then strong magnetic separation, flotation desulfurization and titanium roughing are conducted on weak magnetic tailings, and finally three times of flotation concentration are conducted to obtain titanium concentrate. And the recovery rate of iron and titanium in the vanadium titano-magnetite upgrading tailings is increased.

The invention provides a vanadium titano-magnetite beneficiation method which comprises the following steps: carrying out dry screening after carrying out coarse crushing and medium crushing on vanadium titano-magnetite raw ore, and carrying out dry tailing discarding on dry screening undersize; carrying out ultrafine crushing on the concentrate subjected to dry type tailing discarding, and carrying out weak magnetic pre-concentration roughing and weak magnetic pre-concentration scavenging on the screen underflow; weak magnetic pre-separation roughing concentrate and weak magnetic pre-separation scavenging concentrate are combined and then subjected to first-stage grinding, and classified undersize products are subjected to first-stage weak magnetic roughing and first-stage weak magnetic scavenging; first-stage weak magnetic roughing concentrate and first-stage weak magnetic scavenging concentrate are combined and then enter second-stage ore grinding, and after screening, undersize products are subjected to second-stage weak magnetic roughing and second-stage weak magnetic scavenging; the second-section weak magnetic roughing concentrate and the second-section weak magnetic scavenging concentrate are combined and then subjected to third-section ore grinding, then quality-improving and impurity-reducing magnetic separation is conducted, the quality-improving and impurity-reducing magnetic separation concentrate is concentrated and filtered to obtain superfine iron ore concentrate, and the quality-improving and impurity-reducing magnetic separation tailings are treated to obtain superfine titanium concentrate; the method provided by the invention can realize comprehensive utilization of iron and titanium resources.

This invention discloses a process for the co-extraction of vanadium from vanadium-titanium magnetite and vanadium shale coal. The process employs a side-blown furnace, with a clarification and vanadium blowing device connected to the end of the furnace via a chute. The side-blown furnace has a feed inlet at the top of its first end and a flue at the top of its last end. Multiple straight nozzles are installed on both sides of the furnace. The process includes the following steps: S1, uniformly mixing vanadium-titanium magnetite and vanadium shale coal in a specific ratio; S2, adding the mixed mineral material through the feed inlet of the side-blown furnace, and injecting pulverized coal and oxygen-enriched feed into the furnace through the straight nozzles. High-temperature smelting is carried out using air and natural gas; S3, after the smelting reaction is completed, the melt is discharged into the sluice box through the side-blown furnace outlet and then into the clarification and blowing vanadium device; the side-blown furnace of this application suppresses the generation of by-products such as TiC during the smelting process by injecting natural gas, so that the metal reduction reaction can be fully carried out, realizing the continuous melting and metal reduction process of mixed vanadium-titanium magnetite and shale coal vanadium ore, breaking the defects of traditional multi-process step-by-step processing, shortening the blast furnace and non-blast furnace smelting process, and reducing equipment investment, operating costs and environmental impact.

The invention relates to the technical field of blast furnace smelting, and discloses a method for improving the flowability of high titanium slag in blast furnace smelting of vanadium titano-magnetite, and the method comprises the following steps: stabilizing a furnace charge structure of 48wt% of vanadium-titanium sintered ore, 48wt% of vanadium-titanium pellet ore and 4wt% of vanadium-titanium magnetite raw ore, smelting in the furnace, and adding 2-5wt% of dolomite and a proper amount of manganese powder into the vanadium-titanium sintered ore to improve the flowability of the slag. More preferably, the flowability of the high titanium slag is further improved by combining optimization of operation parameters such as large air volume, high air temperature, high oxygen enrichment rate and high top pressure of the blast furnace. According to the method for improving the flowability of the high-titanium slag, on the premise that the charging proportion of schreyerite is not reduced, generation of a high-melting-point phase in the slag can be effectively controlled, the viscosity of the slag is reduced, the flowability of the slag is improved, the smelting efficiency of a blast furnace is improved, and the production cost is reduced.

Nanoflocculants are provided that are comprised of nanoparticles of titanomagnetite having anionic surface moieties associated with electrostatically bound polymerized chains of cationic polyacrylamide, further comprising lauryl sulfate moieties adsorbed to the surface of nanoparticles of the titanomagnetite nanoparticles and / or adsorbed to the bound cationic polyacrylamide polymers. These nanoflocculants combine the dual functionalities of the polyacrylamide / lauryl sulfate moieties, as well as the surface activity of titanomagnetite nanomaterials. Process are provided for making and using the disclosed nanoflocculants, including uses for flocculating intimate aqueous dispersions of solids and bitumen.

The application discloses a smelting method of vanadium-titanium magnetite, belongs to the technical field of comprehensive utilization of vanadium-titanium magnetite, and solves the problems of low iron utilization value, low vanadium recovery rate and difficulty in recovery and utilization of titanium in the prior art. The method comprises the following steps: vertical furnace gas-based direct reduction of vanadium-titanium magnetite oxidized pellets and reducing gas to obtain metallized pellets; the metallized pellets are loaded into an electric furnace, one-time melting separation is carried out under the condition that no reducing agent is added, low-carbon molten steel and iron-vanadium-titanium slag are generated; the iron-vanadium-titanium slag is mixed with coke and loaded into the electric furnace, secondary melting separation is carried out, and silicon-vanadium alloy and titanium-rich slag are generated. The application can be used for smelting of vanadium-titanium magnetite.

The present application relates to the field of blast furnace smelting technology, and proposes a vanadium-titanium magnetite blast furnace smelting method, which comprises: adjusting the burden structure and the ore grade in the blast furnace smelting process to obtain a slag with a mass content of TiO2 of 23.5-24.5%, and produce molten iron and pig iron; controlling the mass content of MgO in the slag to be 7-9%, the mass content of Al2O3 to be 13.5-15%, the slag basicity R2 to be 1.06-1.10 times, and R3 to be 1.38-1.42 times to optimize the fluidity of the slag; controlling the oxygen enrichment rate of the blast furnace to be 4.0-6.0% to make the mass content of Ti(CN) in the slag less than 0.5% and reduce the deterioration of the fluidity of the slag; and controlling the temperature of the molten iron to be 1430-1460 DEG C to make the mass content of titanium in the pig iron be 0.18-0.28% to optimize the separation of slag and iron. The present application realizes that the blast furnace can maintain stable and efficient smelting when the mass content of TiO2 in the slag is 23.5-24.5%.

The invention relates to the technical field of iron ore beneficiation, and discloses a vanadium titano-magnetite crushing and grinding method which comprises the following steps: crushing and screening vanadium titano-magnetite to obtain a coarse particle material with predetermined granularity; the coarse particle materials are crushed, water is added into the crushed materials for size mixing, first wet screening is conducted, and first oversize materials and first undersize materials are obtained; carrying out ore grinding on the first undersize material, and then carrying out second wet screening to obtain a second oversize material and a second undersize material; the first oversize material and the second oversize material are mixed and then fed into a second high-pressure roller mill to be crushed, the crushed materials are subjected to third wet screening, the third oversize material returns to the second high-pressure roller mill to be crushed again, the third undersize material is merged into the ball mill to be finely ground and screened, and the second undersize material is the finely ground material with the qualified particle size. According to the method, by optimizing a crushing and ore grinding cooperation mechanism, the overall energy efficiency and treatment capacity of the system are improved, and the investment and operation cost is reduced.

The invention discloses a blast furnace smelting method for schreyerite with a low magnesium-aluminum ratio, relates to the technical field of blast furnace smelting in the technical field of schreyerite, and solves the problems that an existing blast furnace vanadium titano-magnetite smelting method is not suitable for smelting under the condition of the low magnesium-aluminum ratio and the smelting effect is poor. Slag components are accurately regulated and controlled; furnace temperature is controlled, and the molten iron temperature is controlled within a first preset parameter; air supply is controlled; and controlling the coke quality and smelting to obtain a finished product. By adjusting crude fuel, slag is accurately regulated and controlled, and slagging, the molten iron temperature, the air supply system and the coke quality are adjusted; the method is suitable for a schreyerite blast furnace smelting method under the condition of low magnesium-aluminum ratio, the slag performance is excellent, and the desulfurization effect is good. And the generation of high-melting-point minerals in the furnace slag is greatly reduced by precisely regulating and controlling the components of the furnace slag, especially the cooperative regulation and control of low magnesium-aluminum ratio and binary alkalinity. And the slag fluidity is greatly improved, slag-iron separation is smooth, and the production efficiency of the blast furnace is improved.

This invention discloses a method for separating iron and titanium in high-iron, high-titanium vanadium-titanium magnetite, belonging to the field of mineral processing technology. To achieve the rational utilization of high-iron, high-titanium vanadium-titanium magnetite, this invention provides a method for separating iron and titanium in high-iron, high-titanium vanadium-titanium magnetite, comprising: crushing the high-iron, high-titanium vanadium-titanium magnetite to obtain crushed products; subjecting the crushed products to a first-stage grinding and magnetic separation to obtain magnetic concentrate 1 and tailings 1; subjecting magnetic concentrate 1 to a second-stage grinding and magnetic separation to obtain iron concentrate and tailings 2; combining tailings 1 and tailings 2 for screening and classification, and separately performing gravity separation on coarse and fine iron tailings to obtain titanium rough concentrate; finally, performing a three-stage high-intensity magnetic separation to obtain titanium concentrate. This invention employs a two-stage grinding and two-stage magnetic separation process, improving grinding efficiency, reducing over-grinding rate, separating tailings into coarse and fine particle sizes, improving gravity separation effect, and increasing yield while ensuring the grade of iron concentrate and titanium concentrate.

The invention discloses a vanadium titano-magnetite beneficiation process method and belongs to the technical field of mineral processing engineering. The method comprises the following steps: crushing and screening crushed mineral materials, and carrying out dry pre-separation; carrying out first-stage grinding on the dry-separated concentrate, carrying out first-stage rotational flow classification, and carrying out first-stage magnetic separation on an overflow product; the concentrate is subjected to second-stage rotational flow classification, a sand setting product is subjected to second-stage ore grinding, an overflow product is subjected to second-stage magnetic separation and high-order magnetic separation, and the concentrate is filtered to obtain a qualified iron concentrate product; carrying out first-stage strong magnetic separation on tailings subjected to magnetic separation; carrying out third-stage cyclone classification on strong magnetic concentrate, carrying out third-stage ore grinding on a sand setting product, and carrying out third-stage magnetic separation on an overflow product; and the tailings are subjected to two-section and three-section strong magnetic separation, strong magnetic concentrate is subjected to dehydration stirring and rough flotation, roughing tailings are subjected to scavenging flotation, roughing concentrate is subjected to fine flotation, and qualified titanium concentrate products are obtained after concentrate is subjected to filtering dehydration and secondary filtering. According to the method, the production energy consumption and cost can be reduced, and the added value of the vanadium titano-magnetite is increased.

The invention relates to the field of carbon dioxide sequestration, in particular to a method for sequestration of carbon dioxide by wet mineralization of vanadium titano-magnetite tailing sand, which comprises the following steps: collecting emissions containing CO2; the method comprises the following steps: collecting vanadium titano-magnetite tailing sand, naturally air-drying and sieving to obtain a reactant; the reactants are dissolved in water according to a preset solid-to-liquid ratio and stirred on a magnetic stirrer at a preset stirring speed for 5-10 minutes, the preset solid-to-liquid ratio is obtained through experimental optimization, and the stirring speed is obtained through experimental optimization; carbon dioxide emissions are introduced into the reaction mixture according to a preset passing rate for carbon dioxide curing, and the preset passing rate is obtained through experimental optimization; the carbon sequestration effect is detected by detecting the pH drop rate of the reaction mixture. The vanadium titano-magnetite tailing sand can be used for curing carbon dioxide, so that the utilization efficiency of resources is improved.

The invention relates to the technical field of metallurgical equipment, and discloses a vanadium titano-magnetite smelting device which comprises a furnace body, a furnace cover, a liftable supporting frame, a furnace cover lifting device, a furnace cover rotating device and a rotary supporting double-layer isolation lubricating cavity structure. The rotary bearing double-layer isolation lubricating cavity structure comprises an inner-layer sealing cover, an outer-layer protective cover, a labyrinth type gap sealing structure and a positive-pressure protective gas supply system, a sealing cavity is defined between the inner-layer sealing cover and the outer-layer protective cover, the raceway and the rolling body are sealed in the sealing cavity, and lubricating grease is isolated in the sealing cavity. The labyrinth type gap sealing structure forms a multi-stage labyrinth groove, and the smoke dust invasion path is prolonged. The positive pressure protection gas supply system introduces compressed air into the sealing cavity, micro-positive pressure is kept in the sealing cavity, the compressed air leaks outwards from the interior of the sealing cavity along the labyrinth groove, an air flow barrier from inside to outside is formed, and smoke containing vanadium and titanium oxides is prevented from invading inwards.

The present application relates to iron-making technology field, propose a kind of for vanadium-titanium magnetite smelting blast furnace hearth structure and cooling control method, the blast furnace structure includes furnace bottom brick lining, hearth side wall brick lining and be located in the hearth side wall brick lining below furnace base;Furnace bottom brick lining and the outside of the hearth side wall brick lining is provided with smooth cast iron cooling wall, the inside of the furnace base is provided with cooling device;The furnace bottom brick lining is successively provided with heat preservation brick layer and heat-conducting brick layer from hearth bottom to furnace base direction, heat preservation brick layer includes dense clay brick and composite mullite brick, the heat-conducting brick layer is semi-graphite carbon brick;Hearth side wall brick lining is built with the composite mullite brick, and in the corner of hearth and furnace bottom, hearth side wall brick lining extends to form brick lining reinforcing structure in the direction of furnace in.The present application solves the problem of excessive deposition of titanium carbonitride caused by improper temperature gradient when smelting vanadium-titanium magnetite, inhibits the accumulation of hearth center and edge bonding, maintains the hearth active and blast furnace smooth.

This invention relates to the field of mineral exploration technology, and more particularly to a multidimensional spatial analysis system for vanadium-titanium magnetite based on third-order tensor decomposition. The system includes: a data acquisition module for acquiring vanadium-titanium magnetite core samples and third-order magnetic gradient tensor data; a mineralogical analysis module for determining the spatial distribution complexity and liberation degree of vanadium-titanium magnetite; a tensor decomposition module for calculating the internal structural complexity of vanadium-titanium magnetite at various sounding depths; a mapping relationship construction module for constructing a first mapping relationship between spatial distribution complexity and the liberation degree of vanadium-titanium magnetite, and a second mapping relationship between structural complexity and spatial distribution complexity; and a mineability assessment module for assessing the mineability of vanadium-titanium magnetite at different sounding depths. This invention combines in-well third-order magnetic gradient tensor detection technology with core mineralogical analysis technology, effectively improving the reliability of vanadium-titanium magnetite mineability assessment.

The invention belongs to the field of blast furnace ironmaking, and particularly relates to a method for smelting vanadium titano-magnetite in a blast furnace, which comprises the following steps: charging iron ore and coke into the blast furnace for smelting to obtain slag and molten iron; the effective volume of the blast furnace is 1000-2500m < 3 >; the iron ore comprises two or three of alkaline sintered ore, acidic pellet ore, alkaline pellet ore and lump ore; the proportion of the iron ore with the particle size smaller than 5 mm in the iron ore is smaller than or equal to 1.8 wt%; the coke comprises large coke blocks and small coke blocks; the weight of each batch of smelted iron ore and coke meets the requirements of a formula (1)-a formula (3); the oxygen enrichment rate in the smelting process is controlled to be 4.5-10%; the TiO2 content of the slag is greater than or equal to 22wt%. According to the characteristics of blast furnace smelting of the vanadium titano-magnetite, the fuel ratio of blast furnace smelting of the high-titanium type vanadium titano-magnetite can be reduced by increasing the thickness of a coke layer of blast furnace smelting and adding small coke blocks into ore.

The invention provides an iron and titanium separation method for vanadium titano-magnetite, which comprises the following steps: carrying out coarse crushing and medium crushing on vanadium titano-magnetite raw ore, then carrying out dry screening, carrying out fine crushing on dry screening oversize products, then returning to dry screening treatment, and carrying out dry tailing discarding on dry screening undersize products; carrying out high-pressure roller grinding ultrafine crushing on the concentrate subjected to dry type tailing discarding, and carrying out weak magnetic pre-concentration roughing and weak magnetic pre-concentration scavenging on screen underflow; weak magnetic pre-separation roughing concentrate and weak magnetic pre-separation scavenging concentrate are combined and then subjected to first-stage grinding, and classified undersize products are subjected to first-stage weak magnetic roughing and first-stage weak magnetic scavenging; after the concentrates are combined, the concentrates are subjected to second-stage grinding, and after screening, screen underflow is subjected to second-stage weak magnetic roughing and second-stage weak magnetic scavenging; and after the concentrates are combined and subjected to third-stage grinding, third-stage weak magnetic roughing and third-stage weak magnetic concentration are carried out, the concentrates obtained through third-stage weak magnetic roughing are concentrated and filtered, and iron concentrates are obtained. By adopting the process provided by the invention, iron and titanium resources of the vanadium titano-magnetite can be efficiently and comprehensively recycled.

The invention belongs to the technical field of metallurgy, and particularly relates to a method for separating iron and titanium resources in South African PMC titano-magnetite through selective oxidation-reverse magnetic separation. According to the technical scheme, the method comprises the following steps that (1) the South African PMC titano-magnetite is ground and screened, and a powder material is obtained; the South African PMC titanomagnetite is prepared from the following components in percentage by mass: 45 to 54 percent of Fe2O3, 15 to 24 percent of FeO, 5 to 9 percent of MgO, 3 to 5 percent of SiO2, 3 to 5 percent of CaO and 2.5 to 3 percent of TiO2; (2) the powder material is placed in a high-temperature furnace to be subjected to oxidation treatment, and a sintered material is obtained; (3) the sintered material is taken out, crushed and screened into powder with the particle size being 400 meshes or below; and (4) the obtained powder is subjected to magnetic separation, and iron-rich concentrate and titanium-containing tailings are obtained. According to the method, iron and titanium resources in the South African PMC titano-magnetite can be effectively separated at the low temperature, the subsequent magnetite smelting process can be optimized, and efficient utilization of mineral resources is achieved.

The smelting device for the vanadium titano-magnetite relates to the technical field of metal smelting, and comprises a lower support, a smelting mechanism is arranged on one side of the top of the lower support, an oxygen blowing mechanism is arranged on the top of the lower support, and a slag treatment mechanism is arranged on the lower support; cold water is sprayed to the treatment ladle through the spraying mechanism, the slag is made to be separated from the treatment ladle through the difference of the thermal expansion and cold contraction coefficients of the treatment ladle and the slag, the impact strength of an impact hammer can be weakened, the slag removal difficulty is lowered, the differential rotating mechanism can make the adjusting frame and the center column generate angle deviation in the process, and the slag removal efficiency is improved. The first support and the second support are driven to move in a reciprocating mode, the first support moves to adjust the water spraying state, water discharged by the rotating water spraying pipe can more effectively cover the whole treatment bag, meanwhile, the wiping block is matched to prevent the water spraying pipe from being blocked by particles wrapped in steam, and finally the cleaning and scraping mechanism is matched to comprehensively remove slag on the inner wall of the treatment bag.

The utility model relates to an ore pulp stirring barrel, and belongs to the field of vanadium titano-magnetite preparation equipment. The device comprises a barrel body (1) and a stirring impeller (2), the stirring impeller (2) is eccentrically arranged in the barrel body (1), and a flow guide plate (3) is arranged on the inner wall of the side, away from the stirring impeller (2), of the barrel body (1). The device is eccentrically provided with the stirring impeller (2), so that the flowing mode of ore pulp can be changed, the generation of vortexes is reduced, the turbulence degree of the ore pulp is increased, the mixing efficiency is improved, and the energy loss is reduced; the flow guide plate (3) can improve the flowing state of ore pulp in the barrel and avoid dead angles, so that materials can be fully mixed and reacted, meanwhile, the flowing of the ore pulp is dispersed, the descending speed of the liquid level is reduced, the stability and consistency of the ore pulp are kept, and the mixing efficiency is improved. The problems of non-uniform stirring, insufficient mixing, high stirring energy consumption and low stirring efficiency of a medicament and ore pulp due to the fact that an existing ore pulp stirring barrel is easy to generate vortex are solved.

The invention belongs to the technical field of metallurgy, and particularly relates to a method for selective reduction-magnetic separation of iron and titanium resources in South African PMC titano-magnetite. According to the technical scheme, the method comprises the following steps that (1) the South African PMC titano-magnetite is ground and screened, and a powder material is obtained; (2) mixing the powder material with a reducing agent and an additive, briquetting, and carrying out reduction treatment in a high-temperature furnace to obtain a reduced material; (3) the reduction material is taken out, crushed and screened into powder with the particle size being 400 meshes or below; (4) carrying out magnetic separation on the obtained powder to obtain iron-rich concentrate and titanium-containing tailings; and (5) the titanium-containing tailings are further subjected to magnetic separation, and coarse titanium concentrate and secondary magnetic separation tailings are obtained. According to the method, iron and titanium resources in the South African PMC titano-magnetite can be effectively separated at the low temperature, the subsequent magnetite smelting process can be optimized, and efficient utilization of mineral resources is achieved.

The invention provides a method for recycling titanomagnetite, titanium concentrate and apatite concentrate from phosphorus-containing titanomagnetite. The method comprises the steps of raw ore pretreatment, titanomagnetite recycling through low-intensity magnetic separation, ilmenite and apatite separation through high-intensity magnetic separation, titanium enrichment through reselection, titanium concentrate enrichment through flotation and phosphorus recycling through phosphorus flotation. By means of segmented magnetic separation and reselection-flotation combined enrichment, efficient separation and recovery of all valuable elements are achieved, the comprehensive utilization value of resources is improved, and the separation cost is reduced.

The present application relates to the technical field of vanadium-titanium magnetite blast furnace smelting, and discloses a blast furnace zinc removal method based on vanadium-titanium magnetite, which comprises the following steps: obtaining the zinc charging load for blast furnace smelting of iron ore, wherein the iron ore contains vanadium-titanium magnetite; adjusting the burden angle, blast furnace batch weight and coke load in the burden system according to the zinc charging load, wherein the adjustment range of the burden angle increases with the increase of the zinc charging load, and the blast furnace batch weight and coke load decrease with the increase of the zinc charging load; obtaining the types of furnace charges and the weight and zinc content of each furnace charge to determine the zinc removal rate; and adjusting the structure of the charging raw material in the burden system and the air supply system according to the zinc removal rate. Through the above scheme, the blast furnace center airflow is stabilized, the zinc circulation enrichment in the blast furnace is reduced, the zinc removal capacity of the blast furnace is enhanced, and the stable and smooth operation of the blast furnace for smelting vanadium-titanium magnetite is facilitated.

The application provides a high-efficiency comprehensive utilization method of vanadium-titanium magnetite, and relates to the technical field of non-ferrous metallurgy. The method takes a concentrate selected from vanadium-titanium magnetite as a raw material, and obtains a Fe(V)-Ti(C, N, O) / Ti(C, O)-MOx mixture by agglomeration and reduction after adding a carbonaceous reducing agent according to a specific principle; the mixture is subjected to magnetic separation to obtain non-magnetic substances and magnetic substances; the non-magnetic substances are subjected to hydrochloric acid leaching to obtain a titanium-rich material, and the titanium-rich material is subjected to soluble anode electrolysis to prepare metallic titanium or low-temperature chlorination to obtain TiCl4; the magnetic substances are subjected to smelting and purification to be used as an anode, and the Fe(V)-Ti(C, N, O) / Ti(C, O)-MOx mixture after hydrochloric acid leaching and purification treatment is subjected to electrolytic refining in an acid solution to prepare high-purity iron; and vanadium is enriched and recovered in the purified vanadium-containing slag and the electrolytic refining anode mud. 2+ The method takes titanium extraction as a core, does not need to make slag, improves the utilization rates of titanium, iron and vanadium, avoids various problems caused by large slag quantity in the traditional process, has simple process, low energy consumption, high controllability and environmental protection and no pollution, and is beneficial to industrial large-scale production and popularization.

The invention belongs to the field of vanadium titano-magnetite flotation, and particularly relates to a vanadium titano-magnetite titanium concentrate flotation reagent and a flotation process, and the vanadium titano-magnetite titanium concentrate flotation reagent is formed by mixing a titanium selection collecting agent B-1, superior titanium and MOH according to the weight ratio of (0.8-1.2): (0.8-1.2): (0.8-1.2). The flotation reagents of the specific combination are selected for synergistic effect, the grade and the recovery rate of the vanadium titano-magnetite titanium concentrate are improved, the effect is better than that of a single reagent and an existing combined reagent, the cost performance is higher, the flotation reagent cost can be reduced, the economic benefit is enhanced, the matched staged dosing flotation technology is matched with the particle size and component characteristics of flotation raw materials, and the flotation effect is better. And the sorting pertinence is high.

The invention discloses a system for producing titanium concentrate at low cost by using vanadium titano-magnetite, which comprises a hydrocyclone device, a high-frequency vibrating screen device, a weak magnetic drum type magnetic separator device, a ball mill, a first titanium concentrate separation device and a second titanium concentrate separation device, the first titanium concentrate separation device is used for performing first-time enriched ilmenite roughing on a mixture obtained by adding ferrosilicon powder into oversize products obtained after hydrocyclone sand setting and screening classification and stirring and size mixing and performing first-time enriched ilmenite scavenging on tailings of the mixture; the second titanium concentrate separation device is used for performing secondary enriched ilmenite roughing on a mixture obtained by adding ferrosilicon powder into hydrocyclone settled sand formed after undersize products obtained after screening and grading are subjected to hydrocyclone grading again, stirring and size mixing, and performing secondary enriched ilmenite scavenging on tailings of the undersize products obtained after secondary enriched ilmenite roughing and secondary enriched ilmenite scavenging; therefore, the quantity of ores entering the flotation operation and the addition amount of flotation reagents can be reduced, the reagent cost is reduced, and the production efficiency is improved. The invention further discloses a method for low-cost production of the titanium concentrate from the vanadium titano-magnetite.