627 results about "Nickel oxide" patented technology

The application provides a method for grading diesel deep hydrodesulfurization catalysts, which comprises the following steps: loading catalysts containing AlPO4-5 phosphorus aluminum molecular sieves and catalysts containing ETS-10 titanium silicon molecular sieves in the upper and lower parts of a fixed bed hydrogenation reactor respectively according to a loading mass ratio of 1:3-3:1, so that diesel is subjected to hydrodesulfurization reaction through catalysts containing AlPO4-5 phosphorus aluminum molecular sieves first and then through catalysts containing ETS-10 titanium silicon molecular sieves; the carrier of the catalysts containing AlPO4-5 phosphorus aluminum molecular sieves comprises AlPO4-5 phosphorus aluminum molecular sieves and aluminum oxide powder, the carrier of the catalysts containing ETS-10 titanium silicon molecular sieves comprises ETS-10 titanium silicon molecular sieves and aluminum oxide powder, and the active components of the two kinds of catalysts respectively comprise a combination of two or three of nickel oxide, molybdenum oxide and cobalt oxide. The sulfur content of the hydrogenated diesel obtained through the method can be as low as 10 μg / g or below.

The invention discloses an alkaline electrolyzed water diaphragm based on nickel oxyhydroxide and a preparation method and application of the alkaline electrolyzed water diaphragm, and relates to the technical field of composite diaphragms.The alkaline electrolyzed water diaphragm is prepared through a phase inversion method, and nanometer nickel oxyhydroxide NiOOH particles are selected as inorganic nanometer filler; the mass percent of the nickel oxyhydroxide in the membrane casting solution is 15-30%. A strong chemical bond formed by nickel ions and hydroxyl in the hydroxyl nickel oxide crystal endows the material with excellent structural stability, and the material shows excellent solubility resistance, hydrolysis resistance and structural collapse resistance in a strong alkaline electrolysis environment and can tolerate high-concentration OH <-> erosion for a long time; meanwhile, the intrinsic high-oxidation-resistance characteristic is achieved.

The application provides a lithium ion battery and an electric device, the lithium ion battery comprising a positive electrode sheet and an electrolyte, an active substance in the positive electrode sheet comprising a phosphate lithium positive electrode material and a lithium nickel cobalt manganese oxide, the electrolyte comprising a positive electrode film former, a negative electrode film former and a lithium salt, the lithium salt comprising lithium hexafluorophosphate and a lithium bisfluorosulfonylimide salt, the lithium ion battery satisfying the following formula: wherein NL is a mass ratio of the lithium nickel cobalt manganese oxide and the phosphate lithium positive electrode material, S alt is a value of a molar concentration of the lithium hexafluorophosphate and the lithium bisfluorosulfonylimide salt in the electrolyte in mol / L, and A dd is a mass ratio of the positive electrode film former and the negative electrode film former. The application can adjust the ratio of the positive electrode film former and the negative electrode film former and the ratio of the high-heat-resistance lithium salt according to the mixing ratio of the ternary material doped in the lithium manganese iron phosphate or the lithium iron phosphate, so that the cycle performance of the battery is improved.

The invention provides a gas sensor and a method for preparing the gas sensor through laser direct writing. The method comprises the following steps: enabling a metal electrode to be in contact with laser direct writing ink, wherein the laser direct writing ink comprises a nickel source, a porous structure guiding agent and a solvent; laser irradiates a specified contact area of the metal electrode and the laser direct-writing ink, so that the metal electrode absorbs the laser to generate heat so as to form a hydrothermal reaction area in the specified contact area, and the laser direct-writing ink in the hydrothermal reaction area is subjected to a hydrothermal reaction, so that porous nickel hydroxide grows on the metal electrode, and a precursor structure is obtained; and carrying out annealing treatment on the precursor structure so as to convert the porous nickel hydroxide into porous nickel oxide, thereby obtaining the gas sensor. The gas sensor provided by the invention has the porous nickel oxide which has a relatively large specific surface area, so that the effective contact area between the gas sensor and target gas can be increased, and the gas responsivity of the gas sensor is improved.

The present application belongs to the field of diamond preparation, and discloses a high-quality single-crystal diamond preparation method for removing polycrystal defects. Through screen printing and plasma-assisted etching, the (100) surface around the black point-shaped polycrystal is directionally etched by cerium oxide, and a square groove is etched. Then, the slurry of iron oxide or nickel oxide is printed by screen printing, the black point-shaped polycrystal is covered with the slurry, and the black point-shaped polycrystal is removed by plasma-assisted etching. Then, the etched groove is filled by a horizontal growth process, so that the growth defects can be removed, and high-quality single-crystal diamond can be obtained. The present application can greatly reduce the waste rate of single-crystal diamond products and improve the utilization rate of single-crystal diamond. The present application is beneficial to saving production cost and improving efficiency.

The invention belongs to the field of PET (polyethylene glycol terephthalate) plastic waste treatment, and particularly relates to preparation of a copper oxide-nickel hydroxide core-shell structure catalytic material and application of the copper oxide-nickel hydroxide core-shell structure catalytic material to preparation of high-added-value formic acid by upgrading electro-catalysis PET plastics, and the preparation method comprises the following steps: (1) placing a copper conductive substrate in an alkali etching mixed solution for alkali etching treatment, obtaining a conductive substrate on which a Cu (OH) 2 precursor grows; (2) placing the conductive substrate on which the Cu (OH) 2 precursor grows in a muffle furnace for heat treatment to obtain a conductive substrate on which CuO nanowires grow; and (3) placing the conductive substrate on which the CuO nanowire grows in a hydrothermal kettle, and obtaining the CuO-coated Ni (OH) 2-x core-shell structure catalyst through a hydrothermal method.

The invention discloses a perovskite / crystalline silicon laminated solar cell, a preparation method thereof and a photovoltaic module. The perovskite / crystalline silicon laminated solar cell provided by the invention comprises a perovskite top cell, a crystalline silicon bottom cell and a composite layer used for connecting the perovskite top cell and the crystalline silicon bottom cell, the perovskite top cell comprises a composite hole transport layer, the composite hole transport layer comprises a first hole transport layer and a second hole transport layer, and the first hole transport layer is in contact with the composite layer; the first hole transport layer is obtained by sputtering a nickel oxide target material by introducing H2 in an oxygen-free sputtering atmosphere, and the second hole transport layer is obtained by sputtering the nickel oxide target material in a hydrogen-free atmosphere. According to the perovskite / crystalline silicon laminated solar cell provided by the invention, the composite hole transport layer can realize better contact matching with the middle composite layer, better charge extraction and collection are carried out on the perovskite light absorption layer, and meanwhile, the perovskite / crystalline silicon laminated solar cell has better conductivity.

The invention provides a high-voltage-resistant gallium oxide trench junction barrier Schottky diode. The high-voltage-resistant gallium oxide trench junction barrier Schottky diode comprises a cathode metal layer, a high-doping N-type gallium oxide substrate, a low-doping N-type gallium oxide epitaxial layer, an etching table top first dielectric layer, an etching table top second dielectric layer, a P-type nickel oxide layer, a dielectric layer and an anode metal layer which are sequentially stacked from bottom to top. According to the invention, P-type nickel oxide and gallium oxide are introduced to construct a heterostructure into a JBS structure, the JBS structure is combined with the etched trench to form a trench junction barrier Schottky diode, and the device has lower specific on-resistance, can bear higher reverse breakdown voltage, and is a gallium oxide JBS device with excellent performance.

The invention belongs to the technical field of preparation of barium titanate, and particularly relates to a preparation method of a defect-regulating barium titanate composite material, which comprises the following preparation steps: S1, adding a proper amount of barium carbonate, titanium dioxide, nickel oxide and dopant mixed powder into a ball milling tank for ball milling to obtain initial barium titanate composite particles; s2, dispersing the initial barium titanate composite particles obtained in the step S1 into an aqueous solution of a growth inhibitor for reaction to form modified barium titanate composite powder; and S3, mixing the barium titanate composite powder obtained in the step S2 with an adhesive polyvinyl butyral, pressing into a biscuit, performing cold isostatic pressing, sintering, annealing in a nitrogen atmosphere, and performing heat preservation to obtain the defect-regulated barium titanate composite material.

The invention discloses a trans-perovskite solar cell and a preparation method thereof. The trans-perovskite solar cell comprises a conductive substrate, a hole transport layer, a passivation layer, a perovskite absorption layer, an electron transport layer and a back electrode layer which are arranged in sequence, the hole transport layer is made of nickel oxide; the passivation layer is made of cerium oxide, and the thickness of the passivation layer is 2-5nm; the light incidence direction of the solar cell is from one side of the conductive substrate to one side of the back electrode layer. Ce < 3 + > in cerium oxide is preferentially combined with dangling bonds on the surface of NiOx to form Ce-O-Ni bonds, so that interface defects are eliminated; the cerium oxide energy level is located between the perovskite and the hole transport layer, so that an energy level buffering effect is achieved, and the photoelectric conversion efficiency is improved; the Ce < 3 + > / Ce < 4 + > valence state conversion characteristic of cerium oxide can efficiently absorb and convert ultraviolet photons and prevent the ultraviolet photons from damaging a perovskite lattice structure; the fluorite structure of CeO gamma forms an ion diffusion barrier to block Ni < 2 + > from migrating to a perovskite layer and protect the perovskite structure.

A particulate nanocomposite material comprising, as determined by X-ray diffraction (XRD): elemental carbon (C); elemental nickel (Ni) in a cubic crystalline phase; a cubic nickel oxide (NiO) crystalline phase; an orthorhombic calcium borate (CaB2O4) crystalline phase; and, a magnesium borate (MgB2O4) crystalline phase. The porous particulate nanocomposite is characterized in that, based on the total number of atoms in the particulate nanocomposite material: the atomic concentration of carbon is from about 1 atomic percent (at. %) to about 10 at. %; the atomic concentration of nickel is from about 1 at. % to about 10 at. %; the atomic concentration of boron (B) is from about 1 at. % to about 10 at. %; the atomic concentration of magnesium (Mg) is from about 5 at. % to about 15 at. %; and, the atomic concentration of calcium (Ca) is from about 1 at. % to about 10 at. %.

The invention provides a dark metal modified lithium orthosilicate-based thermochemical heat storage material as well as a preparation method and application thereof, and belongs to the technical field of energy and material science. The components of the heat storage material comprise lithium orthosilicate and dark metal, the proportion of the dark metal in the heat storage material is 2-10 mol%, and the source of the dark metal comprises one or more of manganese dioxide, ferric oxide, nickel oxide and copper oxide. Metal ions introduced into the obtained dark metal modified lithium orthosilicate-based thermochemical heat storage material have the effects of promoting the ion migration rate and resisting material sintering, and specifically, the heat storage density and the cycling stability of the material are remarkably enhanced. In addition, due to the introduction of the dark metal oxide, the color of the heat storage material is remarkably deepened, the solar spectrum absorptivity is greatly improved, the light absorption performance of the material is greatly enhanced, and the heat storage material has higher photo-thermal conversion efficiency and is more suitable for a concentrating solar energy storage system.

The invention discloses a nickel-based catalyst, a preparation method thereof and application of the nickel-based catalyst in carbon dioxide conversion. The catalyst is prepared by taking nickel oxide or a nickel-nickel oxide coexisting state as an active component and performing mild partial reduction activation at 200-450 DEG C. The nickel oxide and the nickel-nickel oxide coexisting phase have excellent low-temperature activity and stability. The catalyst has outstanding performance in reactions such as preparation of methane by hydrogenation of carbon dioxide, especially can realize high conversion rate (61.3-87.1%) and high methane selectivity (gt, 99.8%) at 200-250 DEG C, has good stability, greatly reduces the activation energy consumption of the catalyst, and has important industrial application value.

The invention provides a multi-element lithium supplement agent and a preparation method thereof, a positive pole piece and a lithium ion battery, the multi-element lithium supplement agent comprises an inner core, a first coating layer and a second coating layer, the inner core comprises lithium-rich lithium aluminum ferrite, the first coating layer comprises lithium-rich lithium manganate, and the second coating layer comprises lithium-rich lithium nickelate; the chemical general formula of the multi-element lithium supplement agent is LixFeaAlbMncNidOy, 0.1 < = d / (a + b) < = 0.9, 0.62 < = a < = 0.96, 0.04 < = b < = 0.38, 0.005 < = c / (a + b) < = 0.02, 5a + 5b + 2c + 2d < = x < = 5.5 a + 5.5 b + 2.1 c + 2.1 d, and y = (x + 3a + 3b + 4c + 2d) / 2. Iron and aluminum are adopted as main elements, and lithium-rich lithium manganate and lithium-rich lithium nickelate are coated at the same time, so that the stability of the lithium supplementing agent can be improved, gas production can be reduced, the ionic conductivity can be improved, and the capacity exertion of the lithium supplementing agent can be promoted.

The invention relates to an all-solid-state lithium battery high-nickel positive electrode material, a preparation method and an all-solid-state lithium battery, and belongs to the technical field of lithium batteries. Aiming at the interface problem of a high-nickel oxide positive electrode material and a chloride solid electrolyte, Al and B are creatively used for constructing a gradient cation disordered structure protection layer on a near surface, and a controllable structure gradient from a disordered structure to an ordered structure is formed when the surface is transited to a bulk phase; on one hand, a surface cation disordered structure can avoid direct contact between a solid electrolyte and high-oxidability Ni < 4 + > to further inhibit interface side reaction, and on the other hand, doping of an Al element on a near surface can improve stability of lattice oxygen, formation of oxygen under high cut-off voltage can be reduced, and stability of the structure is improved.

The invention discloses a space high-temperature environment tolerant perovskite cell and a preparation method thereof, and relates to the technical field of solar cells, the perovskite cell comprises a substrate, a conductive layer, a hole transport layer, a first oxide layer, a perovskite light absorption layer, a second oxide layer, an electron transport layer, an interface layer and a metal electrode layer which are stacked in sequence, wherein the hole transport layer is made of nickel oxide; the crystal structures of the first oxide layer and the second oxide layer are perovskite crystal structures; the perovskite light absorption layer is made of inorganic metal halide with an ABX3 type structure; the interface layer is made of metal chromium; according to the invention, the problems of easy material decomposition and interface failure of the perovskite cell under a high-temperature condition are improved, and the high-temperature resistance of the perovskite cell is improved, so that the perovskite cell meets the requirement of long-term stable work in a space high-temperature environment.

The application discloses porous chlorine dioxide slow-release preservative paper and a preparation method thereof. The paper comprises a paper base, a porous carrier is fixed on the paper base through oxidized starch glue, sodium chlorite, an activator and a stabilizer are loaded on the porous carrier, and the porous carrier is one of porous structures of aluminum oxide, titanium oxide, cobalt oxide, zinc oxide, copper oxide, iron oxide, cerium oxide, zirconium oxide, nickel oxide, manganese oxide, praseodymium oxide and lanthanum oxide. The application can stably and effectively realize slow release of chlorine dioxide, prolong the release period of chlorine dioxide, and realize long-acting and stable sterilization and disinfection.

A process for producing C2 to C5 hydrocarbons, the process comprising introducing a feed stream comprising hydrogen and a carbon-containing gas selected from the group consisting of carbon monoxide, carbon dioxide, and mixtures thereof into a reaction zone of a reactor, and converting the feed stream into a product stream comprising C2 to C5 hydrocarbons in the presence of a shaped mixed catalyst in the reaction zone. The shaped mixed catalyst comprises a metal oxide catalyst component comprising nickel oxide, gallium oxide, and zirconium oxide; a microporous catalyst component is a molecular sieve having 8-MR (member ring) pore openings; and wherein the mixed catalyst is reduced in a hydrogen-containing atmosphere at a temperature of 450°C to 750°C.

The invention relates to the technical field of batteries, in particular to a battery pole piece, a preparation method of the battery pole piece, a lithium ion battery and an electric vehicle. The battery pole piece comprises a foil and an electrode material layer which are arranged in sequence, the material of the electrode material layer comprises manganese-cobalt-nickel oxide, the chemical general formula of the manganese-cobalt-nickel oxide is MnxCoyNizO, x is equal to 0.2-0.4, y is equal to 0.2-0.4, z is equal to 0.4-0.6, and x + y + z is equal to 1. The invention aims to improve the low-temperature performance of the battery without influencing the performance of the battery in a high-temperature environment.

The application discloses a preparation method of a lithium battery negative electrode material Mo2C / NiO@GO carbon nanofiber, and comprises the following steps: S1, weighing nickel oxide, ammonium molybdate tetrahydrate and a solvent and performing ultrasonic treatment; S2, weighing a high-molecular surfactant, adding the high-molecular surfactant into a beaker and stirring at normal temperature to obtain a spinning solution; S3, adopting a needle tube to suck the spinning solution and performing electrostatic spinning to obtain a precursor, taking down the precursor after spinning is completed, and drying the precursor in an oven; S4, pre-sintering the dried precursor; S5, performing suction filtration on the pre-sintered precursor; and performing heat treatment on the suction filtration and drying precursor to obtain the required lithium ion battery negative electrode material. The preparation method of the application obtains the Mo2C / NiO@GO material with a three-dimensional network structure, improves the specific surface area and the conductivity of the negative electrode material, and the obtained battery has high specific capacity and good cycle stability, and has significant economic value.

The application discloses a magnesium-neodymium alloy and a preparation method thereof, and relates to the technical field of magnesium alloys.The alloy comprises the following preparation raw materials: magnesium ingot, neodymium, yttrium and modified nickel oxide; the modified nickel oxide comprises the following preparation raw materials: graphene oxide, polyaniline, nickel oxide, silane coupling agent and aluminum.In the application, the modified nickel oxide is prepared from graphene oxide, polyaniline, nickel oxide, silane coupling agent and aluminum; graphene oxide and nickel oxide are both sheet structures; under the action of the silane coupling agent, the sheet structures interact; thus, the stability of the nickel oxide in the magnesium alloy matrix is improved, and the corrosion resistance of the matrix is improved.

The invention provides a nickel-manganese oxide composite material, a preparation method and application, and belongs to the technical field of environmental functional materials and water pollution control, and the preparation method comprises the following steps: adding terephthalic acid, nickel nitrate hexahydrate and manganese chloride tetrahydrate into N, N-dimethylformamide, stirring and mixing, dropwise adding a NaOH solution, transferring into a high-pressure reaction kettle, carrying out a hydrothermal reaction, filtering, washing, and drying to obtain the nickel-manganese oxide composite material. After the reaction is completed, centrifugally washing a mixture in the inner container of the high-pressure reaction kettle, and drying in vacuum to obtain a NiMn-MOF material; and placing the NiMn-MOF in a porcelain boat, calcining, and naturally cooling to room temperature to obtain the nickel manganese oxide composite material. The nickel manganese oxide material prepared by the method shows excellent catalytic activation performance on persulfate, and can realize efficient and rapid degradation of bisphenol A.

The invention discloses a method for preparing monophenol compounds from lignin. The method comprises the following steps: mixing a raw material lignin with a solvent, and carrying out a one-step hydrogenation reaction in a hydrogen atmosphere under the action of a nickel-molybdenum-based catalyst to prepare the monophenol compound, the nickel-molybdenum-based catalyst comprises metal nickel and nickel oxide, molybdenum oxide and silicon oxide. The method provided by the invention has the characteristics of low production cost, simple separation, high monophenol compound yield and the like.

This utility model belongs to the field of nickel oxide-based target material processing equipment, specifically relating to a sintering and forming device for preparing nickel oxide-based targets. It includes a high-temperature box furnace, with an inner wall suction plate fixedly connected to the front side of the inner wall of the furnace. A suction fan is fixedly connected to the top of the front side of the furnace, with its input end penetrating into the interior of the furnace and communicating with the interior of the inner wall suction plate. A sealing plate is installed inside the inner wall suction plate, and a control column is fixedly connected to the front side of the sealing plate. The front side of the control column extends into the front side of the furnace, and a fixing mechanism is engaged at the top of the control column. This utility model, by adding a suction plate, suction fan, sealing plate, control column, and fixing mechanism to the high-temperature box furnace, achieves efficient control of the gas inside the furnace. The suction fan, in conjunction with the inner wall suction plate, can promptly discharge harmful or excess gases from the furnace, ensuring the stability of the sintering environment.

The invention discloses a nickel oxide / SAMs double-layer hole transport layer and a preparation method and application thereof.The preparation method comprises the steps that high-valence metal cation salt is added into a NiOx precursor solution to obtain a mixed solution, then the mixed solution is sprayed to the surface of a substrate for heat treatment, and a hydroxylated nickel oxide layer is obtained; spin-coating the surface of the hydroxylated nickel oxide layer with an SAM solution, and carrying out annealing treatment to obtain a nickel oxide / SAMs double-layer hole transport layer; the high-valence metal cations comprise one or more of V < 5 + >, Mn < 6 + > and Ce < 4 + >; according to the invention, through a cooperative regulation strategy of combining high-valence metal cation doping and sintering under a high-humidity condition, two major problems of difficulty in uniform anchoring of SAMs and low intrinsic ion mobility existing in a nickel oxide hole transport layer are synchronously solved.

The invention provides a method for preparing nickel hydroxide from laterite-nickel ore, which comprises the following steps: after the laterite-nickel ore is pulped, carrying out iron and aluminum removal treatment to obtain iron and aluminum removed liquid; carrying out resin adsorption treatment on the iron and aluminum removed liquid to obtain nickel adsorbed resin; desorbing the nickel-adsorbed resin to obtain a nickel-rich solution, and sequentially carrying out copper and zinc removal, calcium and magnesium removal, fluorine removal treatment and silicon removal treatment to obtain a nickel salt solution; the nickel salt solution, the liquid caustic soda and the dispersing agent solution are injected into the base solution in a parallel flow mode, nickel hydroxide slurry is obtained through a co-precipitation reaction, and nickel hydroxide is obtained through post-treatment. According to the method, after the laterite-nickel ore is pulped to remove iron and aluminum, nickel is extracted through high selectivity of resin, nickel, manganese and cobalt can be separated and analyzed to obtain nickel-rich solutions, a purified nickel salt solution is obtained through series impurity removal, the purified nickel salt solution reacts with liquid caustic soda, and a high-purity nickel hydroxide product is prepared. And the nickel does not need to be recovered through a complex extraction process.

The invention discloses a metal oxide composite sodium ferric sulfate positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of sodium ion battery positive electrode materials. The metal oxide composite sodium ferric sulfate positive electrode material comprises the following raw materials in parts by mass: 1-20 parts of sodium sulfate, 2-40 parts of ferrous sulfate, 0.05-1 part of an antioxidant, 0.05-1 part of a carbon source and 0.01-2 parts of metal oxide, the metal oxide is at least one of ferrous oxide, ferric oxide, ferroferric oxide, manganese oxide, manganese dioxide, cobalt oxide, cobaltosic oxide, cobaltic oxide, vanadium monoxide, vanadium dioxide, vanadium trioxide, vanadium pentoxide, nickel oxide and copper oxide. The invention also discloses a preparation method and application of the metal oxide composite sodium ferric sulfate positive electrode material. The method provided by the invention can solve the problems of low conductivity and specific capacity of the existing sodium ferric sulfate positive electrode material, and has the advantages of low cost, strong process adaptability and wide application prospect.

The application relates to an anode layer and a preparation method and application thereof, and belongs to the technical field of solid oxide batteries. The preparation raw material of the anode layer provided by the application comprises the following components in percentage by mass: ceramic powder 20-38%, nickel oxide powder 10-20%, solvent 30-40%, resin compound 6-10%, dispersant 5-10%, and the balance is plasticizer; the resin compound comprises an additive and a polymer wrapped on the surface of the additive; the additive comprises a perovskite type oxide. By using the resin compound containing the specific additive, the size and distribution of the pores contained in the anode layer can be well controlled, so that the anode-supported battery has excellent electrical performance and a prolonged service life.

The conductive paste includes a nickel powder, a ceramic powder, an organic binder, and an organic solvent, and an average of 79% or more and 100% or less of a surface of nickel particles (10) constituting the nickel powder is coated with sulfur (11) and nickel oxide (12). It is preferable that the coating rate of the sulfur (11) is 1-89% on average of the surface of each nickel particle (10), and that the coating rate of the nickel oxide (12) is 9-99% on average of the surface of each nickel particle (10). More preferably, the organic binder is contained in an amount of 3-7 parts by mass per 100 parts by mass of the nickel powder, and the ceramic powder is contained in an amount of 2-18 parts by mass per 100 parts by mass of the nickel powder.

The application discloses a tail gas waste heat utilization system and method of a pressurized vessel for nickel-oxygen pressure leaching, and the system comprises the pressurized vessel, a pre-flash evaporation tank, a flash evaporation tank, a first-stage atmospheric leaching tank, a thickener and a second-stage atmospheric leaching tank; the high-temperature tail gas in the pressurized vessel and the flash evaporation tank is introduced into the first-stage atmospheric leaching tank and the second-stage atmospheric leaching tank to heat the ore pulp, so that the fresh steam consumption is reduced, and thus the production cost of the enterprise is greatly reduced; and the problem of environmental pollution caused by disorderly dispersion of a small amount of valuable metal nickel sulfate carried by the tail gas is solved, the valuable metal carried is re-introduced into a production system, the corrosion problem of plant facilities within a certain range around the tail gas is eliminated, and the production environment is obviously improved, so that the application has important significance for the production of non-ferrous metal nickel-oxygen pressure leaching.