16 results about "Ilmenite" patented technology

This invention relates to the field of comprehensive utilization of solid waste, specifically providing a process for treating ilmenite ore using solid waste pyrolysis products. The process involves preheating the ilmenite ore to above 1000°C with low-oxygen flue gas, then feeding it along with waste plastics, waste coke, and other raw materials into a pyrolysis reduction reactor for pyrolysis reduction. The pyrolysis of waste plastics and waste coke generates reducing gases, ensuring the device is completely in a reducing gas atmosphere. These gases react with the ilmenite ore at high temperatures to generate magnetically separable elemental iron and Fe3O4, thereby increasing the actual FeTiO3 content. Compared to existing ilmenite ore processing technologies, this method significantly increases the processing temperature, improves processing efficiency, and achieves comprehensive energy utilization.

This invention provides a method for producing reduced ilmenite, belonging to the field of solid-state reduced ilmenite technology. This invention uses a petroleum coke pot furnace to produce reduced ilmenite, utilizing the heat of the pot furnace to reduce carbon-containing titanium ore pellets. Simultaneously, the combustible gases generated by the titanium ore pellets continue to heat the flue, allowing the reduction process to continue without external heat. This method utilizes the low-cost, self-heating mechanism of a pot furnace for producing calcined coke to produce reduced ilmenite, reduced iron, or other carbothermally reducible metal oxides. The pelletizing formula and method used are significantly different from the traditional rotary kiln used for producing reduced ilmenite, facilitating operation within the pot furnace, increasing permeability, and enhancing the reduction effect. This invention not only reduces production costs but also improves the production method of reduced ilmenite.

This invention provides a chemical chain gasification method for Chlorella, belonging to the field of biomass energy conversion technology. The invention involves acid treatment of Chlorella to remove endogenous alkali (earth) metals and some ash, avoiding interference with the gasification reaction while retaining the organic active components of Chlorella. Calcination of ilmenite improves its mechanical strength, facilitating recycling, and converts it into an active state, enhancing its reactivity and increasing its selectivity for H2 and CO, particularly H2. This achieves efficient gasification of Chlorella, yielding high-purity syngas. Furthermore, the use of natural ilmenite reduces costs.

This application discloses a method for preparing high-purity electronic-grade titanium dioxide from ilmenite, belonging to the field of titanium dioxide preparation technology. The method includes steps such as raw material processing, concentrated sulfuric acid acidolysis, sedimentation and filtration, FeSO4 crystallization and separation, preparation of hydrated titanium dioxide, washing and bleaching of hydrated titanium dioxide, acidolysis of hydrated titanium dioxide, secondary hydrolysis, washing and filtration, and calcination. This method effectively removes various impurities such as iron, phosphorus, niobium, and zirconium through acidolysis, secondary hydrolysis, and multiple fine washing operations on the hydrated titanium dioxide intermediate. The resulting titanium dioxide product has a purity of over 99.9%, providing a new route for preparing high-purity electronic-grade titanium dioxide from ilmenite.

The present application relates to a kind of mineral material composite cobalt-based catalyst, preparation method and its application.The mineral material composite cobalt-based catalyst includes mineral material and cobalt, mineral material is selected from one or more than two combinations of malachite, monazite, manganese ore, mullite, attapulgite, copper ore, iron ore and ilmenite, and the content of cobalt is 25~75% by mass of element, the valence of cobalt is mainly metal oxide, the ratio of Co 3+ / Co 2+ In metal oxide is 0.2~0.8.The mineral material composite cobalt-based catalyst of the present application is simple in preparation method, low in cost, can effectively catalyze oxidation of low-carbon alkane organic volatile matter, and still can maintain higher low-carbon alkane conversion rate under water vapor condition.

This invention belongs to the field of mineral processing collector technology, specifically relating to a collector for ilmenite flotation, its preparation method, and its application. The collector comprises a composite collector, a nonionic surfactant, a fatty acid, and a composite inhibitor; the composite inhibitor is composed of modified carboxymethyl cellulose and nano-cerium dioxide; the preparation method of the modified carboxymethyl cellulose is as follows: carboxymethyl cellulose is activated in a dielectric barrier discharge cold plasma device to obtain activated carboxymethyl cellulose; the activated carboxymethyl cellulose is dissolved in water to obtain a carboxymethyl cellulose solution, and then dihydroxyacetone and cyclohexyl isocyanate are added sequentially to the solution and stirred to obtain modified carboxymethyl cellulose. The composite collector and composite inhibitor of this invention work synergistically to improve the grade of titanium concentrate and increase the recovery rate, exhibiting strong collecting ability and good selectivity, and can be used for large-scale production.

The application relates to the technical field of ilmenite production, and discloses a magnetic separation device for ilmenite, which comprises a shell, a protective shell is fixedly connected to the surface of the shell, a material collecting shell is fixedly connected to the end face of the shell close to the protective shell, a feeding pipe is fixedly connected to the end face of the shell close to the material collecting shell, a waste material shell is fixedly connected to the inner wall of the shell close to the feeding pipe, and an engine is fixedly connected to the inner wall of the shell close to the feeding pipe; when the device is used, ilmenite to be subjected to magnetic separation is put into the device through the feeding pipe; at this time, the engine is started, the control output shaft is rotated, the output tooth is driven to rotate by the output shaft, the steering tooth column is driven to rotate along the inner wall of the shell by the surface meshing effect of the output tooth, the steering tooth plate is driven to rotate by the steering tooth column, and the horizontal tooth is driven to rotate by the surface meshing effect of the steering tooth plate.

The utility model relates to titanium iron ore flotation reagent adding technical field discloses titanium iron ore flotation reagent precision quantitative adding ware, including protection shell, the outside fixed connection of protection shell has support plate, the outside of support plate is provided with suction mechanism, the bottom fixed connection of protection shell has the quantitative component for closing feed, the outside of quantitative component is provided with the discharging mechanism, the suction mechanism includes air cylinder no.

The present application belongs to the field of energy and metallurgy. Specifically, the present application discloses a system and method for simultaneously producing low-carbon pure iron, titanium dioxide and high-end titanium sponge from ilmenite. The ilmenite is directly acidolysed by an acidolysis separation process to obtain titanyl sulfate solution and iron salt crystals. A purified iron salt solution is obtained by a dissolution purification process, and the resource utilization of the dissolved residue / purified residue and the cyclic utilization of sulfur are realized. The preparation of pure iron is realized by a cell iron smelting process and a solution depletion process, and the recycling of the system sulfuric acid cycle and hydrogen product and oxygen product is realized. The preparation of titanium dioxide is realized by a titanium dioxide process using fine particle fluidized calcination technology. The high-end titanium sponge is obtained by a high-end titanium sponge process using coarse particle fluidized calcination. The present application is suitable for large-scale continuous production of low-carbon pure iron, titanium dioxide and high-end titanium sponge from ilmenite, and has the advantages of high efficiency, low energy consumption, no pollution and good economy.

This invention provides a method for preparing synthetic rutile from ilmenite concentrate and the application of a pulsed magnetic field therein, belonging to the technical field of synthetic rutile preparation from ilmenite concentrate. Specifically, this invention applies a pulsed magnetic field to the ilmenite corrosion reaction during the preparation of synthetic rutile from ilmenite concentrate. The magnetic field enhances the dissolution and diffusion of paramagnetic oxygen, accelerating the cathode oxygen reduction reaction rate, thereby promoting the corrosion reaction and achieving efficient separation of titanium and iron. This invention can significantly enhance the ilmenite corrosion reaction process, achieving iron corrosion oxidation and efficient separation of titanium and iron at relatively lower temperatures and in a shorter time, effectively solving the problems of long reaction time and low corrosion efficiency in existing ilmenite corrosion processes.

The invention discloses a concentration flotation column concentrate self-flowing configuration method and device, and the method comprises the following steps: S1, sequentially arranging three sections of concentration flotation column groups on a same elevation platform, namely a concentration I flotation column group, a concentration II flotation column group and a concentration III flotation column group, and each section of concentration flotation column group comprises at least one flotation column; s2, the flotation column sets are arranged in a stepped mode in the concentrate flowing direction; s3, after ilmenite is subjected to fine selection through a fine flotation column group I, concentrate automatically flows into a fine flotation column group II to be subjected to secondary fine selection, and concentrate automatically flows into a fine flotation column group III to be subjected to third fine selection; and S4, tailings of the fine I flotation column group are pumped back to rough flotation, tailings of the fine II flotation column group are pumped back to the fine I flotation column group, and tailings of the fine III flotation column group are pumped back to the fine II flotation column group. The flotation column sets are arranged in a stepped mode, concentrate self-flowing conveying is achieved, concentrate conveying equipment is omitted, investment and energy consumption are reduced, system stability is improved, the reagent removal phenomenon is reduced, and production cost is reduced.

FIELD: metallurgy.SUBSTANCE: invention relates to the production of titanium slags during smelting and reduction of titanium-containing raw materials. Preparation of charge materials, mixing them, obtaining ilmenite-coal briquettes, their heat treatment in a ring furnace at a temperature of 1500-1700°C, unloading and cooling with separation of metal and slag are carried out. At the first stage, heat treatment of the briquettes is carried out for 20-40 minutes, and after heat treatment, the metallised briquettes are cooled with water at a rate of 10-30°C / s. At the second stage, the briquettes are crushed and separated by pneumatic separation by size into two products: -0.056 mm – titanium slag and +0.056 mm – slag-metal product, which is sieved by size into fractions -3.0+0.056 mm – return and +3.0 mm – metal.EFFECT: obtaining titanium slag with low iron content.4 cl, 1 tbl, 1 ex

The application relates to a grading gravity separation method for ilmenite, which comprises the following steps: dividing ilmenite into two materials with different particle sizes according to particle size; designing spiral chutes with corresponding distance-diameter ratios for the two materials with different particle sizes, respectively; feeding the ilmenite with different particle sizes into the spiral chutes with different distance-diameter ratios for separation; respectively adjusting the radial position of the ore interceptors of the spiral chutes, intercepting the concentrates in the ore intercepting intervals, and obtaining corresponding tailings; respectively collecting the concentrates and tailings corresponding to the ilmenite with different particle sizes, and obtaining ilmenite concentrate products; and respectively determining the distance-diameter ratios and ore intercepting intervals matched with the ilmenite with different particle sizes according to the separation results of the ilmenite with coarse particle size and fine particle size under different distance-diameter ratios. The application can ensure that the materials with coarse and fine particle sizes are effectively recovered in the gravity separation section, significantly reduce the load of subsequent operation links such as flotation and electric separation, help to simplify the length of the combined process of ilmenite, and improve the economy and environmental protection of the physical separation process as a whole.

This application relates to the field of mineral processing technology, specifically disclosing a magnetic separator for ilmenite tailings. The separator includes a frame, a feed hopper, a waste hopper, a concentrate hopper, a strong magnetic roller, a driven roller, a transmission belt, and a first rotating motor. The strong magnetic roller and the driven roller are both laterally rotatably connected to the frame. The transmission belt is wound around the strong magnetic roller and the driven roller. The rotating shaft of the first rotating motor is connected to the strong magnetic roller. The feed hopper is located on the frame above the transmission belt, and a leveling mechanism for leveling the tailings is provided at the bottom of the feed hopper. The concentrate hopper is located on the frame below the strong magnetic roller, and the waste hopper is located on the frame to one side of the strong magnetic roller, with the height of the waste hopper lower than the height of the strong magnetic roller's axis. This application addresses the problem that the magnetic roller does not directly contact the minerals in the ore bin, relying solely on the magnetic force of the magnetic roller itself to adsorb magnetic minerals, resulting in an unsatisfactory separation effect. Furthermore, the accumulation of minerals in the ore bin further reduces the separation effect, leading to limited practicality.

The application provides an acid electrode for resisting large current, which comprises an electrode core and a coating covering the electrode core, and the coating comprises the following components: 45-65% of reduced ilmenite, 7.5-12.5% of potassium feldspar, 2.2-3.5% of white clay, 2.2-3.5% of mica, 3.7-6.2% of fine mica, 3-5% of palygorskite, 6-10% of medium-carbon ferromanganese, 3.7-6.2% of marble, 2.2-3.7% of organic matter and 3-5% of sepiolite. The acid electrode for resisting large current increases the ability of resisting large current by adding palygorskite-sepiolite type hydrous aluminosilicate.