41results about "Alkali metal oxides" patented technology

The present invention relates to a process for producing a transition metal carbonate in a continuously operated reactor. In further aspects, the present invention relates to a lithium- and / or sodium-containing transition metal mixed oxide obtainable by this process, as well as the use of an organic additive for producing a transition metal carbonate as a precursor to a lithium- and / or sodium-containing transition metal mixed oxide.

The invention discloses a hard carbon negative electrode composite material as well as a preparation method and application thereof, and relates to the technical field of sodium ion batteries. The hard carbon negative electrode composite material comprises an inner core and a shell coating at least part of the outer surface of the inner core, wherein the material of the inner core comprises graphite, and a metal oxide and a heteroatom which are doped in the graphite; the metal oxide at least comprises sodium oxide, and the metal oxide can react with sodium to form a sodium alloy material; the shell is made of amorphous carbon. The hard carbon negative electrode composite material disclosed by the invention has relatively high electronic conductivity and first charge-discharge efficiency, and also has relatively good low-temperature performance.

The invention discloses a liquid potassium atomizing nozzle in a potassium superoxide production process, and relates to the technical field of potassium superoxide production, the liquid potassium atomizing nozzle comprises a switching pipeline and a sealing shell, the sealing shell comprises an inner cavity and an annular fixing table, the outer wall of the switching pipeline is provided with a clamping table, the clamping table is rotatably connected with the annular fixing table, one end of the switching pipeline is located in the inner cavity, and the other end of the switching pipeline is located in the annular fixing table; a plurality of jet flow openings are formed in the outer wall of the sealing shell and externally tangent to the inner cavity, one end of each jet flow opening is connected with the inner cavity, and the other end of each jet flow opening extends towards the outer wall of the sealing shell. Therefore, the sealing shell is rotationally connected with the switching pipeline, the jet flow opening is externally tangent to the inner cavity, and due to the design, when liquid potassium is jetted out of the jet flow opening, the liquid potassium can cause counter-acting force to the sealing shell, so that the sealing shell is driven to rotate, the liquid potassium can cover a larger range, and then it is guaranteed that the liquid potassium is in full contact with oxygen.

The invention relates to a treatment method for red mud dissolved out of gibbsite, the red mud dissolved out of gibbsite contains sodium-silicon slag and ferric oxide, the method comprises the following steps: under the condition of set temperature, mixing the red mud dissolved out of gibbsite with alkali liquor with set concentration and degassed carbide slag for chemical reaction, the red mud is dissolved out from the gibbsite to be converted into molten garnet, and dissolved-out slurry is obtained. According to the method, sodium oxide and aluminum oxide in the red mud dissolved out of gibbsite are effectively recycled.

The present invention discloses a hard carbon negative electrode composite material, a preparation method thereof and an application thereof, relating to the technical field of sodium ion batteries. The hard carbon negative electrode composite material includes a core and a shell coated on at least a part of the outer surface of the core; wherein, the material of the core includes graphite, and metal oxides and heteroatoms doped in the graphite; the metal oxides at least include sodium oxide, and the metal oxides can react with sodium to form a sodium alloy material; the material of the shell includes amorphous carbon. The hard carbon negative electrode composite material of the present invention has a high electron conductivity and a first charge-discharge efficiency, and also has good low-temperature performance.

Disclosed herein is a process for recovering one or more rare earth elements from a phosphate ore that comprises the one or more rare earth elements. The process can comprise mixing the phosphate ore comprising the one or more rare earth elements with a carbonate-based flux. The process can also comprise subjecting the mixture to conditions such that the one or more rare earth elements are released from the phosphate ore and form one or more rare earth element compounds.

There is provided herein a process for producing metal oxide in a flash calciner, the process comprising: a. pre-heating a metal carbonate particulate stream, prior to the particulate stream being fed into the flash calciner; and, b. calcining the particulate stream in a flash calciner to produce a raw stream comprising metal oxide and a flue gas comprising CO2, wherein at least a portion of the flue gas comprising CO2 produced in step (b) is used to pre-heat the metal carbonate particulate in step (a).

There is provided herein a liquid solution for the recovery of oil from carbonate reservoirs comprising a solid chemical composition comprising Polyhalite in a % weight range of 70 to 99.5; NaCl in a % weight range of 5 to 30; SiO2 in a % weight range of 0.1 to 5; and injected water selected from the group including sea water, diluted sea water, desalinated seawater, produced water, aquifer water, river water, surface water, fresh water, distilled water or a combination of thereof;wherein said solid chemical composition is dissolved in said injected water in an amount of 1-10 grams of said solid chemical composition per 1 liter of said injected water.

The disclosure provides a method of producing hydrogen. The method comprises conducting a thermochemical reaction by contacting a metal, or an alloy thereof, with steam to produce a metal oxide and / or a metal hydroxide and hydrogen. The method then comprises contacting the metal oxide and / or the metal hydroxide produced in the thermochemical reaction with water or a basic aqueous solution to produce a solution comprising a metal ion. Finally, the method comprises conducting an electrochemical reaction by applying a voltage across an anode and a cathode, whereby at least a portion of the cathode contacts the solution comprising the metal ion, to produce hydrogen, oxygen and the metal, or the alloy thereof.

The present invention discloses a lithium supplement for lithium-ion batteries containing lithium oxide and a preparation method thereof. The lithium supplement for lithium-ion batteries containing lithium oxide and a preparation method thereof proposed by the present invention include the following steps: placing a lithium hydroxide raw material in a reaction furnace for primary dehydration, wherein the primary dehydration temperature ranges from 150°C to 200°C; performing a secondary dehydration after a first preset time of the primary dehydration, wherein the secondary dehydration temperature ranges from 600°C to 700°C, to obtain a lithium oxide raw material; wherein, during the secondary dehydration process, monitoring the gas pressure in the reaction furnace, when the gas pressure is greater than the first preset gas pressure, lowering the secondary dehydration temperature, and when the gas pressure is less than the second preset gas pressure, raising the secondary dehydration temperature. The present application proposes a lithium supplement for lithium-ion batteries containing lithium oxide and a preparation method thereof, which is intended to improve the purification rate of lithium oxide while ensuring the purity of lithium oxide, and to control the lithium supplementation rate when lithium oxide is used as a raw material for the lithium supplement.

The utility model relates to the technical field of lithium oxide production, in particular to a lithium oxide production device for solid electrolyte, which comprises a base, the inner wall of the base is meshed and connected with the outer wall of a transmission mechanism, a driving rod is driven to rotate through a coupler and a rotating driving motor, and the driving rod rotates to drive a mounting rotating rod to rotate through a bevel gear. The rotating mounting rotating rod drives a mounting shaft to rotate, the mounting shaft rotates to drive a reaction barrel to rotate, the reaction barrel rotates to drive a stirring cover plate to rotate, the rotating stirring cover plate drives a connecting rotating rod to rotate, and the rotating connecting rotating rod rotates to drive a connecting gear shaft to do circular motion; the circular motion of the connecting gear shaft drives the connecting gear shaft to rotate through the meshing effect with the fixed gear ring, the rotating connecting gear shaft drives the driven gear shaft to rotate through the meshing effect, the driven gear shaft rotates to drive the stirring plate to rotate, and the stirring plate rotates in the opposite direction of the reaction barrel so that raw materials in the reaction barrel can be fully stirred and mixed.

The lithium oxide material produced has uniform particles, high purity, and is produced through a simple process, making it suitable for large-scale industrial production. [Solution] A method for producing a lithium oxide material includes the steps of mixing lithium carbonate, a carbon source, and a dispersant in a certain ratio, and performing stirring and dispersion and wet polishing to obtain an intermediate liquid, spray-drying the intermediate liquid to obtain an intermediate, and sintering and pulverizing the intermediate in a protective atmosphere to obtain a lithium oxide material.

A cathode for an electrochemical device is described including a sodium-based disordered rock salt which can include a transition metal, such as manganese, iron, or titanium. The electrochemical device can be a sodium-ion battery. The disordered rock salt can either be stoichiometric or an over-stoichiometric. A degree of over-stoichiometry of the disordered rock salt is from 0% to about 100%. The disordered rock salt may include, Na1.1Ti0.2Mn0.7O2, MS10-Na1.1Ti0.2Mn0.7O2, MS20-Na1.1Ti0.2Mn0.7O2, Na1.2Ti0.4Mn0.4O2, MS10-Na1.2Ti0.4Mn0.4O2, Na1.3Ti0.6Mn0.1O2, and MS10-Na1.3Ti0.6Mn0.1O2, or a combination thereof.

The invention belongs to the technical field of potassium superoxide preparation, and particularly relates to a potassium superoxide preparation device. Comprising a turbofan, a mixing preparation assembly, a second air inlet assembly, a first air inlet assembly and an air outlet assembly, the mixing preparation assembly comprises a mixing barrel, a disc-shaped air guide plate is fixed to the middle of the mixing barrel, an inner barrel is sleeved with the front section of the mixing barrel, the air guide plate is fixed to the rear end of the inner barrel, and the front end of the inner barrel is connected with the front end of the mixing barrel through an annular end plate; a plurality of fins distributed in a surrounding mode are arranged on the outer wall of the inner barrel, and air outlets are formed in the positions, between every two adjacent fins, of the front section of the inner barrel. Air flow from the turbofan penetrates through the air guide plate, spiral air flow is formed under the action of the first air guide piece and the second air guide piece, the mixing efficiency between oxygen and liquid potassium is improved, and it is ensured that reactants can make full contact and have chemical reaction.

The invention relates to the technical field of radioactive waste sodium treatment, in particular to a method for conducting glass curing on reactants containing sodium elements and a system for treating radioactive waste sodium, and the method comprises the steps that a glass component formula of a glass curing agent is determined; determining the mass of reactants and the mass percentage of sodium element in the reactants; determining the mass of a glass curing agent according to the determined glass component formula, the mass of reactants and the mass percent of sodium element in the reactants; mixing the obtained glass curing agent and the determined reactants, and transferring the mixed mixture into a reaction container; in an inert atmosphere, heating the reaction container containing the mixture until the mixture is molten; and annealing the obtained melt to obtain the glass condensate. The glass curing agent adopted by the method disclosed by the embodiment of the invention is beneficial to improving the curing efficiency of the reactant containing the sodium element, the curing process is relatively safe, and the obtained cured glass is relatively stable.

The invention discloses a surface-modified hard carbon material and a preparation method thereof, the surface-modified hard carbon material comprises a hard carbon base material and a hydrophilic functional coating layer, and the oxygen content ratio of the surface-modified hard carbon material is 4-7wt% through an oxygen and nitrogen content test; the surface oxygen content of the surface-modified hard carbon material is distributed in a gradient manner; the oxygen content of a surface layer within 5nm is 3.0-5.1 wt%, and the oxygen content of an area below the depth of 5nm is less than or equal to 1.6 wt%; a nano-pore structure is arranged in the hard carbon base material, Na2O nano-particles are embedded in the nano-pore structure, and a sodium carboxylate group is arranged on the surface of the hydrophilic functional coating layer. A sodium element is embedded into a nano hole structure of a hard carbon base material in the form of Na2O to form a bulk phase sodium pre-storage structure, and a rapid sodium ion transmission channel is formed by constructing a hydrophilic functional coating layer with a sodium carboxylate group on the surface, so that the first effect is remarkably improved; in addition, the hydrophilic functional coating layer can also improve the wettability of the hard carbon material and electrolyte, and the rate capability is remarkably improved.

The invention relates to a positive electrode active material, a battery, and a method for manufacturing the positive electrode active material. Provided is a positive electrode active material capable of achieving low battery resistance. A positive electrode active material having particles of a compound A having a composition represented by LixNiaCobMncOy and particles of a compound B having a composition represented by MdOe, in the particles of the compound B, the abundance ratio of an element having an ion radius alpha of # imgabs0 # is 45 mol% or more, and the content of the element having an ion radius alpha of # imgabs0 # relative to the total of the particles of the compound A and the particles of the compound B is 5 mol% or more. The area ratio X of the particles of the compound B is 0.8% < = X < = 19.6%. Wherein 0.1 < = x < = 1.5, 0.5 < = a < = 1.0, 0 < = b < = 0.3, 0 < = c < = 0.3, a + b + c = 1.0, and 1.5 < = y < = 2.1, 0.001 < = d < = 0.2, and 0.002 < = e < = 0.4, and M represents at least one element selected from the group consisting of Ti, Zr, Ta, Pr, K, La, Ba, Y, Sr, Ce, Se, Hf, and Rh.

To provide a method for preparing a lithium oxide material, wherein the prepared lithium oxide material is uniform in particle, high in purity, simple in process, and suitable for application in large-scale industrial production.SOLUTION: Provided is a method for preparing a lithium oxide material, including the following steps: mixing lithium carbonate, a carbon source, and a dispersant in a predetermined proportion, followed by stirring and dispersing, and wet grinding, to obtain an intermediate solution; spray-drying the intermediate solution, to obtain an intermediate; and sintering and pulverizing the intermediate under a protective atmosphere, to obtain a lithium oxide material.SELECTED DRAWING: Figure 1

The compositions, systems and methods of the present disclosure include activated bauxite residue (ABR) compositions and methods of manufacturing activated bauxite residue compositions, methods of treating wastewater and / or soil (including water contained in soil) and methods of treating wastewater and / or soil containing an at least one pollutant, such as PFAS. In one embodiment disclosed herein, there is a method for producing activated mineral oxide, the method comprising reducing an iron oxide using carbon at a threshold temperature. The method can produce activated bauxite residue comprising Fe3O4, which can be used for the reduction of at least one pollutant, such as PFAS, in water or soil. In one embodiment, the method comprises producing activated mineral oxide by reducing moisture in at least one mineral oxide, combining the at least one mineral oxide with carbon to form a mixture, and heating the mixture to produce the activated mineral oxide.

To provide a reducing agent that has high conversion efficiency of carbon dioxide to carbon monoxide, and can be used, for example, in a chemical looping method, and a method for producing a gas using the reducing agent.SOLUTION: The reducing agent of the present invention is used in the production of a product gas containing carbon monoxide by bringing a raw material gas containing carbon dioxide into contact with the reducing agent to reduce the carbon dioxide, the reducing agent comprising an oxygen carrier having oxygen ionic conductivity and a basic oxide supported on the oxygen carrier. The basic oxide preferably contains at least one selected from the group consisting of lithium (Li), sodium (Na), potassium (K), magnesium (Mg), manganese (Mn), cobalt (Co), strontium (Sr), and rubidium (Rb).SELECTED DRAWING: None

According to the present invention, there is provided a process for producing a synthesis gas, by first producing carbon monoxide (CO) from a stream containing carbon dioxide (CO2), obtained from the calcination of a carbonate-containing raw material, and subsequently contacting an obtained CO-containing product gas further with a hydrogen-containing gas to produce synthesis gas.

1. An electrode material comprising an electrochemically active material, wherein the electrochemically active material comprises a layered potassium metal oxide, the layered potassium metal oxide having the formula K x The present invention also relates to an electrode, an electrochemical cell, and a battery comprising the electrode material. For example, the battery may be a lithium battery or a lithium ion battery, a sodium battery or a sodium ion battery, or a potassium battery or a potassium ion battery. According to one embodiment, the present technology provides an electrode material comprising an electrochemically active material, wherein the electrochemically active material has the formula K x MO2 layered potassium metal oxide, where x is 0

According to the present invention, there is provided a process for utilizing a gas stream containing carbon dioxide (CO2), formed during the heat treatment of a raw material containing carbonates, in reducing the carbon dioxide of said stream to carbon monoxide, to produce a gas mixture containing carbon monoxide (CO), and subsequently utilizing at least a fraction of the CO- containing gas mixture as fuel to one or more heat treatment steps.

There is provided herein a process for calcining a metal carbonate feedstock within a flash calciner to produce a metal oxide and flue gas comprising CO2, wherein the process comprises recirculating a

Provided herein is a liquid solution for recovering petroleum from a carbonate reservoir, comprising a solid chemical composition comprising: polyhalite in the range of 70 to 99.5% by weight; NaCl in the range of 5 to 30% by weight; SiO2 in the range of 0.1 to 5% by weight; and injection water selected from the group consisting of seawater, diluted seawater, desalinated seawater, produced water, aquifer water, river water, surface water, fresh water, distilled water, or a combination thereof; wherein the solid chemical composition is dissolved in the injection water in an amount of 1-10 grams of the solid chemical composition per liter of the injection water.

The application discloses a method and device for producing bauxite coupled potassium-silicon fertilizer by potassium-calcium coupling treatment, and particularly relates to the field of clean production of alumina, which comprises the following steps: mixing calcium compounds, biomass, bauxite and potassium meta-aluminate circulating mother liquor in a vortex type ore slurry tank to obtain ore slurry; dissolving the ore slurry in a high-pressure dissolution reactor; under the potassium-calcium and biomass coupling effect, the aluminum potassium occurrence phase in the balanced solid phase is converted into calcium-potassium composite silicate, and the iron occurrence phase is converted into magnetic iron phase; the reaction temperature is controlled to be 140 DEG C-290 DEG C, and the reaction time is controlled to be 30-90 minutes; the dissolved ore slurry is preheated by a preheater to cool the cold ore slurry, and then is subjected to solid-liquid separation in a vortex type rapid settling tank to obtain a dissolution liquid and magnetic red mud; the dissolution liquid is decomposed to obtain aluminum hydroxide, and the aluminum hydroxide is calcined to obtain alumina; and (5) the magnetic red mud is subjected to magnetic separation to remove iron to obtain iron powder, and the residue is rich in 3-10% potassium oxide and can be used as magnetic potassium-silicon long-acting fertilizer.

The invention relates to a method for producing a sodium-containing battery material (BM), comprising the following steps: a) Providing a sodium-containing battery precursor mixture (BVM) as a starting compound in the form of a solution, slurry, suspension or in a solid state, b) Introducing the sodium-containing battery precursor mixture (BVM) into a first thermal reactor (1) with a hot gas stream (1.1), c) thermal treatment of the sodium-containing battery precursor mixture (BVM) carried by the hot gas stream (1.1) at a temperature of 150°C to 1,200°C in the first thermal reactor (1), d) Discharge of the sodium-containing battery precursor material (fBVM) in solid form from the first thermal reactor (1), e) Introducing the sodium-containing battery precursor material (fBVM) from step d) into a second thermal reactor (2), f) Thermal treatment of the sodium-containing battery precursor material (fBVM) at a temperature of 500°C to 1,200°C in the second thermal reactor (2) and conversion of the sodium-containing battery precursor material (fBVM) into the sodium-containing battery material (BM), and g) Extraction of the obtained sodium-containing battery material (BM) in solid form from the second thermal reactor (2). Furthermore, the invention relates to a device (V) for carrying out the method.

The application provides a preparation method of a lithium oxide material, comprising the following steps: mixing lithium carbonate, a carbon source and a dispersing agent according to a certain proportion, stirring and dispersing, wet grinding to obtain an intermediate liquid; performing spray drying on the intermediate liquid to obtain an intermediate; sintering the intermediate in a protective atmosphere, crushing to obtain the lithium oxide material. The prepared lithium oxide particles are uniform and high in purity. The process flow is simple, and the method is suitable for large-scale industrial production. The application further provides the prepared lithium oxide material.

The invention provides a method for preparing metal oxide, oxygen and carbon by using carbonate, which comprises the following steps: S11, heating and decomposing carbonate at 600-850 DEG C to generate metal oxide and carbon dioxide; s12, deoxidizing and reducing carbon dioxide at the reaction temperature of 300-900 DEG C, and generating carbon monoxide and oxygen from the carbon dioxide generated in the step S11 under the condition of a carbon dioxide reduction catalyst; s13, carbon is prepared through carbon monoxide disproportionation, the reaction temperature is 150-550 DEG C, carbon monoxide generated in the step S12 generates carbon and carbon dioxide under the condition of a carbon monoxide disproportionation catalyst, the carbon monoxide disproportionation catalyst comprises a third component and a fourth component, the third component comprises one of copper, zinc, iron, cobalt, nickel and manganese, and the fourth component comprises one of copper, zinc, iron, cobalt, nickel and manganese. And the component IV comprises one or two of zinc oxide, aluminum oxide, copper oxide, magnesium oxide, calcium oxide, strontium oxide and iron oxide.

Integrated Energy Systems (IESs), such as for use in capturing atmospheric carbon dioxide, and associated devices and methods are described herein. A representative IES can include a power plant system having multiple modular nuclear reactors, a desalination plant, a brine processing plant, and a direct air capture plant. The nuclear reactors can generate electricity and / or steam for use by the desalination plant and the direct air capture plant. The desalination plant can use the electricity and / or steam to produce brine from seawater or brackish water. The brine processing plant can receive the brine from the desalination plant and process the brine to produce sodium hydroxide. The direct air capture plant can use the sodium hydroxide as a liquid sorbent in a direct air capture process to capture carbon dioxide from atmospheric air.