13 results about "Nickel sulphide" patented technology

The application provides a kind of copper sulfide@nickel disulfide positive electrode material based on two-dimensional nanosheet wrapping three-dimensional cube and its preparation method and lithium-magnesium dual-ion battery, first using copper salt, alkaline solution and D (+) -glucose in the water bath condition of 70 DEG C, directional formation Cu2O cube.And then, Cu2O and nickel source, sulfur source and surfactant are synthesized by solvothermal synthesis, forming the structure of two-dimensional and three-dimensional combination of NiS2 nanosheet wrapping Cu2S cube.The two-dimensional and three-dimensional combination structure can shorten the particle transmission path, achieve the effect of fast charging and discharging, at the same time, provide more active sites, increase the specific surface area, fully contact with electrolyte, improve the cycle stability of battery.

The invention discloses a nickel sulfide ore collecting agent and a preparation method and application thereof, and belongs to the technical field of ore dressing. The nickel sulfide ore collecting agent comprises the following raw materials in percentage by mass: 70%-80% of alkyl dithiophosphinic acid, 10%-15% of alicyclic diketone dioxime and 8%-17% of a cosolvent. According to the nickel sulfide ore collecting agent, the alkyl dithiophosphinic acid and the alicyclic diketone dioxime can jointly act on the surface of nickel-containing ore and are mutually adsorbed in an interpenetrating mode, the synergistic interaction effect is achieved, and the floatability of the nickel ore difficult to float is improved; and meanwhile, the cosolvent ensures that the alkyl dithiophosphinic acid and the alicyclic diketone dioxime can be fully dissolved mutually and are more easily dispersed when being added into ore pulp, so that the action effect of the medicament is improved.

Nickel Cobalt Sulfide Supercapacitor Electrode Device

The invention discloses a purification method of an impurity-containing nickel sulfate solution and a preparation method of battery-grade nickel sulfate, and relates to the technical field of resource regeneration. The purification method comprises the following steps: adding sodium sulfide into a first part of impurity-containing nickel sulfate solution for reaction, and washing after solid-liquid separation to obtain nickel sulfide; adding nickel sulfide into the second part of the impurity-containing nickel sulfate solution to carry out an impurity removal reaction, and after the impurity removal reaction is finished, carrying out aging and solid-liquid separation to obtain impurity-removed slag and cobalt-removed solution; adding acid into the cobalt-removed liquid for high-temperature evaporative crystallization, and performing centrifugal separation to obtain evaporated crystals and evaporated mother liquor; and aging the evaporated crystal by using a saturated battery-grade nickel sulfate solution, and carrying out centrifugal separation to obtain an aged crystal and an aged mother solution. During high-temperature evaporation, silicon impurities entering the evaporation crystal are reduced by adding acid, then the crystal form of the evaporation crystal is improved by aging, the crystal form peak intensity of the obtained aged crystal is almost consistent with that of a standard sample, and the aged crystal can be used as a battery-grade nickel sulfate crystal.

The application discloses a comprehensive recovery method of sulfide nickel ore resources, which comprises the following steps: step 1) pre-degslip talc flotation is carried out on a sulfide nickel ore slurry to obtain a talc rough concentrate and a talc flotation tailing; step 2) a sulfide nickel ore inhibitor is added into the talc rough concentrate to carry out talc nickel removal flotation, and a talc concentrate and a sulfide nickel middling are obtained; and step 3) the talc flotation tailing and the sulfide nickel middling are subjected to sulfide nickel flotation to obtain a sulfide nickel concentrate and a nickel flotation tailing. The comprehensive recovery method of the sulfide nickel ore resources provided by the application carries out talc flotation before the sulfide nickel flotation, removes talc, reduces the use of CMC, and avoids the negative influence of CMC on the flotation of the sulfide nickel ore. Moreover, the talc concentration is carried out by using the sulfide nickel ore inhibitor, the loss of the sulfide nickel ore in the talc is avoided, and the recovery rate of nickel is improved.

The utility model discloses a kind of nickel sulphide anode plate ear wire replacement devices, including N-type frame, the N-type frame is welded from upper transverse plate, left side vertical plate and right side vertical plate, and triangular rib plate is welded between upper transverse plate and left side vertical plate inside;M12 bolt is screw-connected in right side vertical plate middle part, and M12 bolt penetrates right side vertical plate;V-shaped groove is provided in the center of upper transverse plate top, and V-shaped groove penetrates the left and right ends of upper transverse plate;Screw hole is equipped on the upper transverse plate of V-shaped groove two sides, M8 bolt is connected in screw hole, and wire pressing plate is connected between two M8 bolts. Rapid installation: through bolt clamping mechanism, broken end fixation is completed within 3 minutes, and compared with traditional scrap processing efficiency is improved by 90%;2. High safety: after load test, the maximum bearing capacity of device reaches 800kg (safety factor ≥2.5), meet JB / T8521.1-2007 hoisting standard.

The invention discloses a microwave smelting-pressure leaching production device and method for complex nickel sulfide concentrate, and relates to the technical field of nickel concentrate smelting. The multi-source microwave smelting device is provided with a low-nickel sulfonium discharge port, the low-nickel sulfonium discharge port is connected with the low-nickel sulfonium crushing device through a material conveying device, and the lower part of the low-nickel sulfonium crushing device is provided with a low-nickel sulfonium particle outlet and is connected with the microwave pressure acid leaching device through a lifting device; a mixed leachate outlet of the microwave pressure acid leaching device is pumped into the cyclone separation iron precipitation device through a pipeline, an overflow port in the top of the cyclone separation iron precipitation device is connected with the microwave crystallization device, and a nickel sulfate crystal outlet is formed in the bottom of the microwave crystallization device. The multi-source microwave smelting device realizes slag-matte separation under the action of microwave volume heating; the microwave-assisted pressurized acid leaching system treats the slurry by using coaxial microwave heating and stirring, so that selective leaching of nickel is realized; and carrying out sedimentation treatment on ferric sulfate, and concentrating and crystallizing nickel sulfate to obtain high-purity nickel sulfate.

The application discloses a kind of high ice nickel oxygen pressure leaching residue fire method wet method combined multi-group element comprehensive recycling method, comprising the following steps: (1) high ice nickel oxygen pressure leaching residue is mixed with sulphidizing agent, carbonaceous reducing agent, and is carried out reduction sulphidation roasting treatment, and after cooling, get calcine and rich germanium dust;(2) the calcine is added in dilute sulfuric acid, and constant flow rate SO2 is imported, and reduction acid leaching reaction is carried out, and after filtration, get ferrous solution and nickel sulphide residue;(3) the ferrous solution is frozen crystallization and gets ferrous sulfate heptahydrate;(4) the nickel sulphide residue is carried out and adds acid oxygen pressure leaching, and after filtration, get nickel sulfate solution, and cooling crystallization is carried out and gets again six water nickel sulfate.The application adopts fire method wet method combined processing technology and comprehensively recycles iron, nickel, germanium and other valuable metal elements, and selective reduction sulphidation roasting is used to preferentially process beneficial to the efficient separation among nickel, iron and germanium, and the recovery rate and separation rate of nickel and iron elements are improved.

The invention discloses a microwave drying sample preparation method of a copper-nickel sulfide ore pulp sample, which comprises the following steps: S1, microwave dehydration: putting a wet ore pulp sample into a microwave drying unit, and drying until the water content of the sample is reduced to below 1%; s2, intermediate crushing and division: putting the dried sample into an intelligent double-roller crushing and division machine, crushing until the particle size is less than 2mm, and performing division, so that the recovery rate is greater than 99%; s3, fine crushing and sweeping; and S4, analysis and detection: carrying out elemental chemical analysis on the prepared sample. According to the invention, the dehydration time is greatly shortened, meanwhile, the sample deterioration is avoided, the dried sample is treated by the intelligent double-roller crushing division machine and the intelligent crusher with a self-cleaning function, the efficient and automatic sample preparation is realized, and finally, the sample meeting the analysis requirement is obtained; the technical problems that a traditional method is low in efficiency, large in labor intensity and prone to overheating in concentrate drying and the like are solved, and rapid and accurate detection guarantee is provided for mineral separation production.

Disclosed examples generally relate to a continuous hydrometallurgical process for the production of mixed hydroxide precipitate from nickel sulfide concentrates. In at least one example, the process includes comprising: (a) mixing a sulphur deficient nickel sulphide concentrate with sulphuric acid, water and oxygen to form a leach slurry having an aqueous phase; (b) primary neutralization of the aqueous phase of the leach slurry with a neutralizing agent for removal of at least one impurity to form a neutralized pregnant leach solution (PLS) having at least one primary metal; and (c) secondary neutralization of PLS to precipitate MHP and conducting solid / liquid separation to produce MHP product and MHP filtrate. In some examples, the process further enables production of high purity nickel sulphate crystals from the MHP product without the need for nickel solvent extraction. This may provide a simplified route to battery-grade nickel sulphate suitable for precursor cathode active material synthesis.

The present disclosure relates to a nickel sulphide supported on MOF-based electrocatalyst for electrochemical water splitting. The present disclosure also relates to a method for the synthesis of nickel sulphide supported on MOF-based electrocatalyst for electrochemical water splitting. The present disclosure has an application in large active surface area AEM electrochemical water splitting. The electrocatalyst of the present disclosure has an excellent performance (>1 Acm-2 of current densities) at larger areas of active electrodes (>10 cm2) and for a longer period of operation (>100h) at elevated temperatures that are attractive to industries.

This invention provides a heterogeneous material, its preparation method, and its application. The heterogeneous material comprises nickel foam and nickel sulfide and nickel phosphide supported on the nickel foam. The heterogeneous material is prepared by heat treatment following a mixture of nickel foam, a sulfur source, and a phosphorus source. This heterogeneous material is used to prepare anode materials for sodium metal batteries. It exhibits a low Fermi level, which can prevent electrolyte decomposition, induce a uniform solid-state electrolyte interface, thereby limiting sodium dendrite growth and restricting the volume change of the anode material during sodium metal deposition / stripping, resulting in lower nucleation overpotential and better cycle performance. This anode material shows promising application prospects in the development of high-performance, long-life sodium metal battery systems.

The invention discloses a treatment method of waste lithium ion battery powder, which comprises the following steps: carrying out ball milling on the waste lithium ion battery powder, and sequentially carrying out acid dissolution, copper recovery, oxidation and sulfide precipitation; on one hand, the nickel cobalt manganese sulfide filter residues are subjected to standing oxidation, chemical oxidation and precursor preparation, on the other hand, a lithium iron aluminum solution is oxidized with hydrogen peroxide under the acidic condition, sodium carbonate is added, then lithium carbonate is prepared, waste water and washing water in the reaction process are subjected to evaporation, crystallization and drying, and anhydrous sodium sulfate is prepared. And sodium sulfide is prepared through full reaction of anhydrous sodium sulfate and carbon at high temperature. The invention aims to realize the recovery of copper, iron and aluminum and the preparation of lithium carbonate and ternary battery material precursors through the cooperative design of a plurality of oxidation-reduction reactions, and also realizes the cyclic utilization of sodium sulfide, thereby improving the effective utilization rate of waste batteries.