99 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 belongs to the field of metallurgy, and particularly relates to a method for comprehensively recovering iron, vanadium, titanium, scandium and gallium through cooperation of vanadium titano-magnetite and red mud, which comprises the following steps: a) mixing vanadium titano-magnetite concentrate powder and red mud powder, roasting, leaching in water, and carrying out solid-liquid separation to obtain leached residues and leached liquid; b) mixing the leachate with a precipitant to precipitate vanadium, and carrying out solid-liquid separation to obtain vanadium-rich slag and vanadium-precipitated clear liquid; dissolving the vanadium-rich slag in a sulfuric acid solution, mixing the vanadium-rich slag with ammonium salt to react, carrying out solid-liquid separation, and roasting the obtained solid product ammonium polyvanadate to obtain V2O5; resin is used for adsorbing and desorbing gallium ions in the vanadium precipitation clear liquid, the pH of desorption liquid is adjusted to be alkaline, then electrolysis is conducted, and crude gallium is obtained; c) washing and drying the leaching residues to prepare pellets; after the pellets are pre-reduced, a carbonaceous reducing agent is mixed, melt separation treatment is carried out, and scandium-containing high-titanium slag and molten iron are obtained; and Ti and Sc in the scandium-containing high titanium slag are recycled. The method has the advantages of simple process, cleanness, high efficiency and the like.

The invention belongs to the technical field of pyrometallurgy and hydrometallurgy, and discloses an efficient leaching method for Joule thermal shock strengthened vanadium titano-magnetite. The Joule thermal shock strengthened vanadium-titanium resource efficient leaching comprises the steps that low-grade vanadium-titanium magnetite ore powder and a carbon source are mixed and then subjected to Joule thermal shock activation treatment, and an obtained activation product is leached through dilute acid or organic acid, so that valuable metal such as vanadium, titanium and iron can be efficiently leached out. Vanadium titano-magnetite and a small amount of carbon powder are subjected to Joule thermal shock, so that the valence state of metal ions is reduced, and the leaching activity of metal is improved. The Joule thermal shock strengthening low-grade vanadium titano-magnetite acid leaching method has the advantages of being high in activation efficiency, high in metal element leaching efficiency and the like.

The invention relates to a method for separating iron, vanadium and titanium dioxide in vanadium titano-magnetite or titanium concentrate through a wet method, and belongs to the technical field of chemical engineering. The method comprises the following steps: (a) mixing vanadium titano-magnetite or titanium concentrate with sulfuric acid with the concentration of 22-30wt.% to obtain mixed slurry; (b) treating the mixed slurry at 150-200 DEG C and 2-4 MPa under the condition that the Reynolds number is gt; reacting in a turbulent flow state of 4000, so that non-titanium elements are dissolved to generate sulfate; (c) carrying out solid-liquid separation on the reaction product in the step (b) to obtain a high-grade titanium-rich material and waste liquid; (d) the titanium-rich material reacts with a sodium hydroxide solution, silicon in the titanium-rich material is removed, and a sodium silicate solution is generated; and (e) reacting the silicon-removed titanium-rich material with a hydrochloric acid solution with the mass concentration of less than 15%, cleaning, carrying out solid-liquid separation, and calcining to obtain anatase or rutile titanium dioxide. According to the method, all iron, vanadium and titanium elements in the vanadium-titanium-iron concentrate and the titanium concentrate are recycled.

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.

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 invention discloses a comprehensive recovery method for valuable elements in vanadium titano-magnetite tailings, which comprises the following steps of: (1) dehydrating and concentrating the vanadium titano-magnetite tailings, settling sand, grading and grinding to obtain undersize minerals; (2) the undersize minerals are subjected to concentration dehydration and strong magnetic iron removal and titanium collection, and strong magnetic concentrate, strong magnetic tailings and concentrated overflow are obtained; (3) the strong magnetic concentrate obtained in the step (2) is subjected to gravity roughing, scavenging and concentration, and titanium fine powder is obtained; and (4) carrying out inclined plate desliming concentration on the strong magnetic tailings obtained in the step (2), adding an inhibitor and a collecting agent, and then carrying out flotation roughing, concentration and scavenging to finally obtain phosphorus concentrate powder. According to the method, effective separation of useful minerals and gangue can be ensured, the recovery rate of titanium and phosphorus is increased, the flotation effect is prevented from being affected by over-grinding caused by monomer phosphorus, the phosphorus grade before flotation is greatly improved, the treatment amount of flotation pulp is reduced, the process is simple and easy to implement, and comprehensive and efficient recycling of titanium and phosphorus elements is achieved.

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.

The invention discloses a vanadium titano-magnetite floating phosphorus inhibitor and application thereof, and relates to the technical field of mineral processing. The floating phosphorus inhibitor comprises the following components in percentage by mass: 30%-50% of low-polymerization-degree polysaccharide, 30%-50% of high-polymerization-degree polysaccharide and 0%-40% of an organic dispersing agent. Gangue minerals can be accurately inhibited through good selectivity and stability, and flotation of phosphorite is not affected; and the method is environment-friendly, does not pollute the environment, meets the current requirements on green and environment-friendly production, and is beneficial to promoting the sustainable development of the mining industry. The grade of raw ore P2O5 is 3% or below, phosphorus resources in the vanadium titano-magnetite tailings can be effectively recycled, and the comprehensive utilization rate of the resources is increased; meanwhile, the production cost is effectively reduced, and good economic benefits and social benefits are achieved. In addition, the preparation method of the inhibitor is simple, convenient and feasible, and is convenient to popularize and use in actual production.

The invention discloses a combined separation process for superfine particle phosphorus and titanium resources in vanadium titano-magnetite tailings, relates to the technical field of mineral separation, and establishes a separation mechanism of size fraction directional regulation and control, mineral interface modification and multi-force field cooperation through deep integration of classified ore grinding, fluidization desliming, gradient strong magnetic separation and flotation technical chains. The limitation of granularity division and system division in a traditional process is overcome, unified treatment and efficient separation of coarse and fine minerals are achieved, and the recovery rate and the separation efficiency of phosphorus and titanium resources are remarkably improved; the problems of low recovery efficiency and large reagent loss caused by argillization of the superfine apatite are fundamentally solved by accurately removing the superfine argillaceous minerals and improving the flotation environment. According to the method, the advantages of a flotation machine and a flotation column are combined for complementation, the separation bottleneck of superfine apatite is broken through, collaborative enrichment and efficient separation of superfine phosphorus and titanium resources in the vanadium titano-magnetite tailings are achieved, and a brand new technical path is provided for recycling of tailings resources.

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 discloses a Panxi vanadium titano-magnetite clean beneficiation process, and belongs to the technical field of vanadium titano-magnetite beneficiation. The process comprises three working procedures of crushing and pre-selecting and waste throwing, gradient ore grinding and sorting and tailing treatment, wherein a magnetic roller is adopted for treating raw ore to achieve gradient pre-selecting and waste throwing of large ore, and the grade of ore entering grinding is improved; magnetic agglomeration is broken through an external magnetic multi-gradient magnetic separator, and a spiral chute and a microbubble generator are combined to synergistically optimize separation; a deep-cone thickener is used for concentrating tailings and adding a gelling agent, and paste filling closed loop is achieved. According to the process, the titanium recovery rate can be increased to be greater than or equal to 82%, the emission of tailings is reduced by 40%, the energy consumption per ton of ores is reduced by 35%, zero discharge of wastewater is realized, and remarkable benefits are achieved.

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.

The invention discloses a process for synergistically extracting vanadium from vanadium titano-magnetite and stone coal vanadium ore. According to the process, a side-blown furnace is adopted, and the tail end of the side-blown furnace is communicated with a clarification vanadium blowing device through a chute; a feeding hole is formed in the top of the head end of the side-blown converter, and a flue is formed in the top of the tail end; a plurality of straight nozzles are formed in two side walls of the side blowing furnace; the process comprises the following steps: S1, uniformly mixing vanadium titano-magnetite and stone coal vanadium ore in proportion; s2, the mixed mineral materials are added from a feeding port of a side-blown furnace, and pulverized coal, oxygen-enriched air and natural gas are sprayed into the side-blown furnace through a direct nozzle for high-temperature smelting; s3, after the smelting reaction is completed, a melt is discharged into a chute through a discharge port of the side-blown converter and enters a clarification vanadium blowing device; according to the side-blown furnace, generation of by-products such as TiC in the smelting process is inhibited by injecting natural gas, the metal reduction reaction is fully carried out, the continuous melting and metal reduction process of the vanadium titano-magnetite and stone coal vanadium ore mixed mineral material is achieved, the defects of traditional multi-process step-by-step treatment are overcome, the blast furnace and non-blast furnace smelting technological process is shortened, and the production cost is reduced. And the equipment investment, the operation cost and the environmental load are reduced.

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 iron ore smelting, and particularly relates to a method for smelting vanadium titano-magnetite by combining biomass with a gas-based shaft furnace and an electric furnace, which comprises the following steps: a) drying and crushing biomass to obtain biomass chippings; then carrying out hot press molding on the biomass chippings to obtain biomass particles; b) mixing the biomass particles with the vanadium-titanium pellets, adding the mixture into a gas-based shaft furnace, and introducing reducing gas into the gas-based shaft furnace; under the heating condition, the vanadium-titanium pellets are pre-reduced in the furnace to obtain metallized pellets, the biomass particles are pyrolyzed into biomass carbon in the furnace, and H2-rich pyrolysis gas is released; and c) under the protection of inert gas, directly charging the discharged material of the gas-based shaft furnace into a closed electric furnace in a hot charging manner, and carrying out electric furnace melting separation to obtain high-titanium electric furnace slag and vanadium-containing molten iron. By means of the method, the carbon emission of the gas-based shaft furnace-electric furnace smelting vanadium titano-magnetite smelting process can be effectively reduced.

The ilmenite pre-enrichment device comprises a vertical cavity and an inclined cavity, an inclined plate is contained in the inclined cavity, a water supplementing pipe is arranged in the inclined cavity, a tailing discharging part is arranged above the inclined cavity, a stirring component is arranged in the vertical cavity, a body of the vertical cavity is a cylinder, and the lower portion of the vertical cavity is a cone. A concentrate discharging pipe is arranged below the cone and connected with an ascending water pipe, and the ascending water pipe is used for inputting water into the vertical cavity and pushing low-density mineral particles in the ascending water pipe to move upwards along the inclined plates in the vertical cavity and the inclined cavity through the input water and water supplemented from the supplementing water pipe. According to the pre-concentration device, low-density mineral particles are pushed out from the tailing discharging part, high-density ilmenite falls down from the concentrate discharging pipe, pre-concentration of the ilmenite is achieved, the grade of TiO2 in pre-concentration concentrate products can be improved, the amount of materials entering desulfurization and titanium flotation operation is reduced, consumption of flotation reagents is reduced, and the production cost is reduced. The invention further discloses an ilmenite pre-enrichment method of the vanadium titano-magnetite.