51results about "Titanium compounds preparation" patented technology

A titanate having a nanometer structure and a preparing method and application thereof are provided. The method include S1) preparing a dispersion containing a titanium peroxy complex; S2) slowly adding a metal compound into the dispersion to form a solution; S3) adding an alcohol into the solution at room temperature and under atmospheric pressure to promote generation of a titanate precursor precipitate having a nanometer structure, and performing separation to obtain the precursor; and S4) drying the precursor, and performing thermal treatment to obtain the titanate product having a nanometer structure. The titanate preparing method having a simple process and easily controllable process parameters and susceptible to large-scale industrial production is provided.

There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with HCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said solid from said leachate. Several other metals can be extracted from the leachate (Fe, Ni, Co, Mg, rare earth elements, rare metals, etc.). Various other components can be extracted from solid such as TiO2, SiO2 etc.

The invention discloses a method for recovering a waste lithium titanate negative electrode sheet. The method comprises the following steps: under a protection gas, calcining a waste lithium titanatenegative electrode sheet containing an electrolyte to obtain a lithium titanate negative electrode sheet; carrying out ultrasonic vibration on the lithium titanate negative electrode sheet or a wastelithium titanate negative electrode sheet which does not contain an electrolyte to enable lithium titanate powder to fall off from aluminum foil; adding concentrated sulfuric acid into the lithium titanate powder, carrying out stirring, and carrying out sealing and standing, adding water, then carrying out heating and stirring, and carrying out filtering to obtain a leachate; adjusting the pH value of the leachate and then carrying out multi-stage extraction to obtain a water phase containing titanium and lithium ions; concentrating the water phase containing the titanium and the lithium ions,and carrying out precipitation after hydrolysis to obtain metatitanic acid and a lithium sulfate solution; and carrying out evaporating crystallization on the lithium sulfate solution to obtain lithium sulfate. The method for recovering the waste lithium titanate negative electrode sheet provided by the invention can be used to separate and purify metals of aluminum, titanium, lithium and the like in the waste lithium titanate negative electrode sheet, has short process, high efficiency, excellent separation, simple operation, greenness and environmental friendliness, and has strong social values and considerable economic benefits.

There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with HCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said solid from said leachate. Several other metals can be extracted from the leachate (Fe, Ni, Co, Mg, rare earth elements, rare metals, etc.). Various other components can be extracted from solid such as TiO2, SiO2 etc.

A hydrothermal synthesis method of making a delaminated titanate is disclosed. The delaminated titanate has a unique structure or morphology. The delaminated titanate is first formed by forming at a low temperature a layered sodium nonatitanate (SNT), which may be referred to as layered sodium titanate. The layered SNT has a unique morphology. The layered SNT is then synthesized into a delaminated titanate having a unique morphology.

The invention relates to the technical field of biology and chemical engineering, and concretely relates to a novel hydrophobic eutectic solvent separation and purification system of a weak protonic acid, and a method for purifying the weak protonic acid. The novel hydrophobic eutectic solvent separation and purification system of the weak protonic acid consists of a hydrogen bond donor, and a hydrogen bond receptor and an accelerant which are in a eutectic solvent; the weak protonic acid in a raw material solution is used as a hydrogen bond donor; and functional groups existing in the hydrogen bond receptor and the accelerant in the eutectic solvent interact with the weak protonic acid to form the novel hydrophobic eutectic solvent separation and purification system with a linear, planaror multi-dimensional network structure. The system and the method have the advantages of simple process, low energy consumption, high recovery rate, environmental friendliness, less pollution and thelike.

A negative electrode active material according to one embodiment includes a titanium oxide compound having a crystal structure of monoclinic system titanium dioxide. The titanium oxide compound is modified by at least one kind of ion selected from the group consisting of an alkali metal cation, an alkali earth metal cation, a transition metal cation, a sulfide ion, a sulfuric acid ion and a chloride ion.

The invention discloses a method for preparing porous hollow titanium dioxide nanotubes. The method comprises the steps of 1, dissolving a polymer spinning carrier, an anti-hydrolysis agent, disperse phase, a disperse phase cosolvent and a titanium dioxide precursor in a solvent while stirring to form a spinning solution; 2, conducting electrostatic spinning on the spinning solution obtained in step 1 through an electrostatic spinning device to obtain nanofiber; 3, aging the nanofiber obtained in step 2, and then conducting extraction to obtain hollow nanofiber; 4, calcinating the hollow nanofiber obtained in step 3 to obtain the porous hollow titanium dioxide nanotubes. The method is easy to operate, sensitivity to external conditions during spinning is reduced, silk production is stable, needle blocking does not occur easily, large-scale production can be achieved easily, and the porous hollow titanium dioxide nanotubes prepared with the method have a pure phase and a high specific surface area.

A process for the extraction of lithium from a brine, wherein a solution of the brine is contacted with a titanate adsorbent such that lithium ions are adsorbed thereon whilst rejecting substantially all other cations. The adsorbent is provided in the form of either a hydrated titanium dioxide or a sodium titanate. The process in turn produces a substantially pure lithium chloride solution.

The present invention belongs to the field of preparation technique of inorganic functional material and provides a method for preparing nanometer titanium dioxide which comprises the following steps: (1) dissolving ilmenite powder using hydrochloric acid to obtain a raw ore solution; (2) eliminating the iron element in the raw ore solution to obtain a final solution containing titanium ions; (3) heating the final solution for hydrolysis to obtain a hydrolyzed product containing titanium dioxide; and (4) calcining the obtained hydrolyzed product to obtain nanometer titanium dioxide. The present invention has the advantages that the raw materials can be easily obtained, the energy consumption is low, both rutile type titanium dioxide and anatase type titanium dioxide can be produced, and the product has high purity, small particle diameter, narrow particle diameter distribution and good dispersibility.

The present invention provides a production method for an aqueous dispersion of titanium oxide particles, the production method comprising: a first step (a) in which an aqueous slurry of titanium oxide particles is subjected to wet dispersion in a stirred media mill or a high-pressure dispersion device and in the presence of 15-250 mol parts of acetic acid and 15-90 mol parts of nitric acid with respect to 100 mol parts of titanium oxide, and a pre-washing aqueous dispersion of titanium oxide particles is obtained; and a second step (b) in which the pre-washing aqueous dispersion of titanium oxide particles obtained in the first step (a) is washed. The present invention further provides a production method for a liquid dispersion of titanium oxide particles in alcohol, the production method comprising a third step (c) in which the carrier fluid of the aqueous dispersion of titanium oxide particles obtained in the second step (b) is replaced with an alcohol solvent.

The invention provides a preparation method of nanotube hierarchical structure lithium titanate, application and products thereof. The preparation method of nanotube hierarchical structure lithium titanate comprises the following steps: S1, dispersing the titanium source in an aqueous hydrogen peroxide solution containing lithium hydroxide, and stirring to obtain a mixed solution; S2, heating and reacting the mixed solution obtained in step S1 to obtain a nanometer Linear structure precursor; S3, separate and dry the nanowire structure precursor obtained in step S2; S4, perform low temperature annealing treatment on the separated and dried nanowire structure precursor; S5, subject step S4 to low temperature The annealed nanowire-like structure precursor is subjected to hydrothermal reaction to obtain nanotube hierarchical structure lithium titanate. The method of the invention has simple preparation process, easy control of process parameters and easy large-scale industrial production.

The invention discloses a method for extracting titanium dioxide from titanium-containing blast furnace slag to produce titanium dioxide, comprising the following steps: A. drying the blast furnace slag and grinding it into powder; B. adding ascorbic acid and sulfuric acid to the blast furnace slag powder and stirring evenly C. solid-liquid separation, and wash the filter cake with ascorbic acid to obtain ascorbic acid complex solution; D. utilize cation exchange resin to absorb titanium ions in the ascorbic acid complex solution; E. elution the cation resin with dilute sulfuric acid, And the eluent is hydrolyzed to obtain titanium dioxide. The present invention aims at the deficiencies of the existing technology for extracting titanium from high-titanium blast furnace slag, combines the idea of ​​leaching gold with sodium cyanide, adopts ascorbic acid complexation to leach blast furnace slag, selectively complexes and leaches titanium in blast furnace slag into the liquid phase, and then Liquid-solid separation, liquid-phase hydrolysis to produce titanium dioxide, and subsequent solid-phase recycling to realize high-value recycling of titanium in blast furnace slag, reduce the environmental burden of blast furnace slag, and promote the unification of economic and social benefits.

The present invention relates to a method for directly synthesizing titanium dioxide from a titanium-rich organic phase prepared from ilmenite, and more particularly to a method in which a titanium-rich acidolysis solution is obtained by an efficient ore dissolving technology, titanium ions are transferred to the organic phase by means of an effective titanium extractant to obtain a high-purity and titanium-rich organic phase, and then the titanium dioxide is directly synthesized in the organic phase. With this method, the dissolution rate of ilmenite can be effectively improved, the process flow is shortened and production costs are reduced, and titanium dioxide with high yield and high quality is obtained.

The invention relates to the technical field of biology and chemical industry, specifically a new system for separation and purification of a hydrophobic deep eutectic solvent and a method for purifying a weak protonic acid. Composition of bond donor and hydrogen bond acceptor and accelerator in deep eutectic solvent; weak protonic acid in raw material solution as hydrogen bond donor; functional group and weak protonic acid existing in deep eutectic solvent hydrogen bond acceptor and accelerator Interaction to form a new hydrophobic deep eutectic solvent separation and purification system with linear, planar or multi-dimensional network structure, which has the advantages of simple process, low energy consumption, high recovery rate, green environmental protection, and less pollution.