36 results about "Iron(III) sulfide" patented technology

The invention relates to a carbon nanotube composite material filled with ferrous sulfide, a preparation method and an application thereof, in particular to a carbon nanotube composite material which is filled with the ferrous sulfide and has the advantages of adjustable electrical conductivity, light weight, good stability and stronger broadband microwave absorbability, a preparation method and an application thereof. The key point of the carbon nanotube composite material filled with the ferrous sulfide is as follows: the cavity of the carbon nanotube is provided with the ferrous sulfide, wherein, the molecular formula of the ferrous sulfide is Fe7S8. In the preparation method of the carbon nanotube composite material filled with the ferrous sulfide, the Fe7S8 in the cavity of the carbon nanotube is filled in situ during the growth process of the carbon nanotube. In the invention, the carbon nanotube composite material is taken as an electromagnetic wave absorbing material and an electromagnetic shielding material; and when in use, the carbon nanotube composite material is uniformly dispersed in paraffin wax or epoxy resin and then coated on the surface of an object requiring for being coated.

The invention discloses a preparing method and application of lithium ion battery cathode material selenium ferrous sulfide. The method includes the steps that iron powder, selenium powder and sulfur powder are subjected to mixed target pressing; under the protective atmosphere of argon, selenium ferrous sulfide is sintered through a tube furnace; ball grinding is performed. The prepared selenium ferrous sulfide is used as a lithium ion battery cathode material. The preparing method is easy to operate, simple in process and suitable for large-scale production. The selenium ferrous sulfide cathode material is high in specific capacity, circulating performance and rate performance and is a lithium ion battery cathode material high in performance.

The invention provides an iron disulfide/carbon nano tube composite material of a neural network structure and a preparation method thereof. The preparation method comprises the following steps of adding a carbon nano tube into mixed liquor of ethylene glycol and N,N'-dimethylformamide, and carrying out ultrasonic treatment to obtain carbon nano tube uniformly dispersed mixed liquor; adding ferrous sulfate, sublimed sulfur and urea into the mixed liquor, sufficiently agitating an obtained mixture, and then transferring the mixture into a hydrothermal reaction kettle to carry out a reaction; centrifugally separating a deposit, washing the deposit by using deionized water and alcohol, and then carrying out vacuum drying to obtain the iron disulfide/carbon nano tube composite material which is of the neural network structure. The iron disulfide/carbon nano tube composite material is of a three-dimensional neural network structure which is formed by mutually connecting neurons for which an iron disulfide particle is used as a neuron cell and the carbon nano tube is used as a prominence, wherein the diameter of the iron disulfide particle is not more than 200nm. The neural network structure can be used for improving the electric conductivity of a material; meanwhile, the volume expansion of iron disulfide in charging and discharging processes is buffered through the mechanical property of the carbon nano tube; besides, the wettability of an electrolyte on the material can be also improved through the three-dimensional structure of a neutral network and the nano size of the iron disulfide; the cyclical stability of an iron disulfide material as a sodium-ion negative electrode is greatly improved.

The invention provides a no-lag lithium/iron disulfide round cell and a manufacturing method thereof. The positive pole of the cell is added with a titanium compound in a certain proportion such as one or a mixture of more in an arbitrary ratio of lithium titanate, sodium titanate, barium titanate, ilmenite, titanium dioxide, and the like; the titanum compound, iron disulfide, a conductive agent and a binder are evenly mixed and stirred to be made into slurry, and then, the slurry is coated on an aluminium substrate, and the aluminum substrate is milled and cut into a positive pole sheet; a lithium or lithium alloy negative pole is combined with the positive pole sheet. The lithium/iron disulfide round cell is made after adding the electrolyte. The cell can be widely applied in various fields. The technical method has simple process, eliminates the delay phenomenon in the discharge course, and enhances the stability of cell discharge voltage.

The invention relates to a method for recycling ferric sulphide-containing tailings. According to the method, oxidizing half-reaction FeS2+8H2O -> Fe<3+>+16H<+>+2SO4<2->+15e<-> and reducing half-reaction 3.75O2+15H<+>+15e<-> -> 7.5H2O (3) are respectively put into an anode chamber and a cathode chamber of a microbial fuel cell (MFC) for microbial leaching, so as to obtain ferric sulphide-containing tailings; and when metal is recovered, electrons released by oxidizing half-reaction can also be recovered by an outer circuit of the MFC in a form of electric energy, so that the operation cost is reduced. In addition, protons generated by oxidizing half-reaction are transmitted to a cathode to participate into reduction reaction to generate water, and are continuously consumed, so that the leaching rate can be significantly improved to improve the metal recovery rate; meanwhile, the generated water is environment-friendly and free of secondary pollution; and corrosion to equipment caused by acid production can also be retarded.

The invention discloses a gray ceramic pigment and a preparation method thereof. The gray ceramic pigment is a wrapping type pigment obtained by wrapping iron sulfide with zirconium silicate; the preparation method comprises the following steps that an iron source and a zirconium source are dissolved into water to form a solution A; the sulfide and inorganic alkali are dissolved into water to forma solution B; the solution A and the solution B are evenly mixed in a titration mode, and pH is controlled to be 8.5-9.5; after titration is completed, white carbon black is added, filtering, washing, drying, calcination, acid washing, washing and drying are performed to obtain the gray ceramic pigment obtained by wrapping iron sulfide with zirconium silicate. A liquid phase co-precipitation method is adopted for forming the gray ceramic pigment of the core-shell structure adopting iron sulfide as a core and adopting zirconium silicate as a wrapping layer , the whole pigment is gray and bright in color, the light emitting strength is remarkably improved, and the high temperature stability of the pigment is greatly improved. The preparation method is simple in technology, the product hightemperature stability is high, raw materials are cheap, the production cost is low, and therefore the pigment can be industrially used, applied and popularized.

The invention relates to a method in the technical field of environmental protection, and specifically relates to a sulfur-doped algae and iron composite material and a preparation method and application thereof. The sulfur-doped algae and iron composite material is obtained by reducing iron modified algae based carbon under the effects of an iron source and a sulfur source. The prepared sulfur-doped algae and iron composite material can be applied to water pollution control, soil (sediment) improvement or polluted environment repair. Through the technical scheme, the limitation that the treatment effect is non-ideal, which is caused by agglomeration of a zero-valent iron material or a ferric sulfide material formerly is eliminated, various technical problems for algae biomass high-valuedutilization can be effectively overcome, and a reactor which is low in capital cost and can be quickly constructed is invested in advance.

The invention discloses a beneficiation method of synchronously removing phosphorus and sulfur for high phosphorus sulfur iron ore, and belongs to the technical field of beneficiation. The method comprises the following steps that high phosphorus sulfur iron ore is ground, the pH value of ore pulp is conditioned, and a surfactant calcium hypochlorite is added into the high concentration pulp system; the pulp is concentrated and filtered so as to eliminate disadvantageous influence of residual ions, after the concentration of the ore pulp is lowered, starch and sodium lignin sulfonate are addedto serve as a combined inhibitor of iron ore, a phosphorus sulfur synchronous removal reverse flotation test comprising one roughing, one scavenging and one fine selection is conducted by adopting amixed collecting agent which is prepared from an anion collecting agent sodium oleate and oleamide at a proportion. The method is low in cost and easy and convenient to operate, a calcium component cover is promoted to be formed on the surface of pyrites through sodium carbonate and calcium hypochlorite, the calcium activated particle density on the surface of the phosphorus-containing ore is increased, and synchronous removal of phosphorus and sulfur and improvement of iron grade are achieved through the mixed collecting agent with good selectivity.

The invention relates to a marmatite flotation activating agent, a preparation method and application thereof, belonging to the field of mineral processing flotation reagents. The invention aims at solving the technical problems that the activation selectivity of the marmatite flotation activating agent is weak, thereby leading the existence of lots of minerals such as ferric sulfide in marmatiteand the low recovery rate of the marmatite. According to the technical scheme, the marmatite flotation activating agent is prepared by reaction of 52-56% of copper sulfate, 12-15% of lead nitrate, 10-13% of sodium sulfide, 8-11% of oxidized paraffin soap and 9-12% of lauric acid under high temperature and high pressure. The marmatite flotation activating agent has good stability and strong selectivity. Marmatite concentrate with the grade of 46.53%-49.54% and the recovery rate of 78%-83.34% is obtained by a three-rough one-sweeping two-refining floatation technology under the combined action of the marmatite flotation activating agent and other flotation reagents such as lime, sodium n-butylxanthate and oil NO.2 in the marmatite flotation process.

The invention discloses a preparation method of small-size iron disulfide nano hollow spheres, and aims to solve the problem that a small-size hollow structure is difficult to obtain by an existing FeS2 powder preparation process. The method comprises the following steps: 1, preparing an iron stearate solution; 2, preparing a sulfur powder solution; 3, preparing a surfactant solution; and 4, respectively heating and stirring the iron stearate solution, the sulfur powder solution and the surfactant solution for reaction, then mixing, finally carrying out hydrothermal reaction, centrifuging a hydrothermal reaction product, and cleaning a solid obtained by centrifugation to obtain the small-size iron disulfide hollow nanospheres. The size of the prepared hollow FeS2 ranges from 10nm to 200nm,and the hollow FeS2 has good crystallinity and dispersity. The method is suitable for preparing the small-size iron disulfide hollow nanospheres.

An organic electroluminescent device comprises a positive pole, a hole injection layer, a hole transporting layer, a luminescent layer, an electron transfer layer, an electron injection layer and a negative pole which are sequentially laminated, wherein the electron injection layer consists of a cesium salt doped layer and a ferric salt layer; the cesium salt doped layer comprises a bipolar organic transmission material and a cesium salt; the bipolar organic transmission material is chosen from at least one of 2,4,6-tri(N-phenyl-1-naphthylamine)-1,3,5-triazine, 2,6-bi(3-(9H-carbazole-9-yl)phenyl) pyridine, 3'3''-(4-(naphthalene-1-yl)-4H-1,2,4-triazole-3,5-biyl)bi(N,N-bi(xenyl)-4-ammonia) and 2,5-bi(4-(9-(2-ethylhexyl)-9H-carbazole-3-yl)phenyl)-1,3,4-oxadiazole, and the ferric salt layer is made from at least one of ferric chloride, ferric bromide and ferric sulfide.

The invention discloses a golden yellow crystal bead embryo and a preparation method of the golden yellow crystal bead embryo. The golden yellow crystal bead embryo is prepared from the following components in parts by weight: 150-220 parts of quartz sands, 75-95 parts of pure alkali, 21-32 parts of potassium carbonate, 1-3 parts of boric acid, 2-5 parts of aluminum hydroxide, 1-3.5 parts of salts, 0.3-0.6 part of flour, 0.15-0.3 part of sulphur and 0.001-0.003 part of ferric sulfide. When the golden yellow crystal bead embryo is prepared, redox equilibrium of copper ions in a melting process is kept stable, so that a good dyeing property is realized; by using lead-free raw materials, the golden yellow crystal bead embryo is high in glossiness, bright in colors, order, high in yield and free of lead, and color difference, flower patterns and pollution are avoided; moreover, the production cost is greatly reduced, and a good production benefit is achieved.

The invention discloses an anode material of a lithium-iron disulfide battery. The anode material comprises a modified iron disulfide anode active material which is iron disulfide doped with, by mass, 2% of titanium oxide, 4% of magnesium oxide and 6% of copper oxide. A preparation method of the anode active material specifically includes a) preparing first heat-treated iron disulfide, second heat-treated iron disulfide and third heat-treated iron disulfide; b) preparing first cladding iron disulfide, second cladding iron disulfide and third cladding iron disulfide; c) uniformly mixing the first cladding iron disulfide, the second cladding iron disulfide and the third cladding iron disulfide so as to obtain the anode material of the lithium-iron disulfide battery. The anode material of the lithium-iron disulfide battery has the advantages that open-circuit voltage of the battery can be reduced, so that a voltage platform is steadier; a composite electrically-conductive agent is added into the anode material, and accordingly electric conductivity can be improved greatly, battery polarization is reduced, high-and-low-temperature performance of the battery is enhanced and service life of the battery is prolonged.

An organic electroluminescence device comprises an anode, a hole injection layer, a hole transporting layer, a luminous layer, an electron transporting layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the electron injection layer comprises a rubidium compound doped layer and a metal doped layer; the rubidium compound doped layer is made of a rubidium compound material and a molysite material doped in the rubidium compound material; the rubidium compound material is one or more of rubidium carbonate, rubidium chloride, rubidium nitrate and rubidium sulfate; the molysite material is one or more of ferric chloride, ferric bromide and ferric sulfide; the metal doped layer is made of a first metal material and a second metal material doped in the first metal material; the work function of the first metal material is -2.0 eV to -3.5 eV; the work function of the second metal material is -4.0 eV to -5.5 eV. The light efficiency of the organic electroluminescence device is relatively high. The invention further provides a preparation method of the organic electroluminescence device.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a ternary doped layer and a ferric salt doped layer; the ternary doped layer comprises titanium dioxide, a magnesium compound material and a light emitting material; the magnesium compound material is selected from at least one of magnesium fluoride, magnesium oxide and magnesium sulfide; the ferric salt doped layer comprises a ferric salt material and an organic silicon micromolecule material doped in the ferric salt material; the ferric salt material is selected from at least one of ferric chloride, ferric bromide and ferric sulfide; the energy gap of the organic silicon micromolecule material is minus 3.5-minus 5.5eV. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

The invention discloses a solar cell device. The solar cell device comprises an anode, a hole buffer layer, a first active layer, an intermediate layer, a second active layer, an electron buffer layer and a cathode which are sequentially stacked on one another. The first active layer and the second active layer are made of mixtures of poly-3-hexyl-thiophene and 6,6-phenyl-C<61>-methyl butyrate, the intermediate layer is made of ferric salt, polythiophene and electron transport materials, the selected ferric salt comprises at least one type of ferric chloride, ferric tribromide and ferric sulfide, the elected polythiophene comprises at least one type of poly-3-hexyl-thiophene, poly-3-methyl-thiophene and poly-3-octyl-thiophene, and the selected electron transport materials comprise at least one type of 4,7-diphenyl-1,10-phenanthroline, 3-(biphenyl-4-based)-5-(4-tertiary butyl phenyl)-4-phenyl-4H-1,2,4-triazole and N-aryl benzimidazole. The solar cell device has the advantage of high energy conversion efficiency. The invention further provides a method for manufacturing the solar cell device.

An organic electroluminescent device comprises an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode, which are stacked in sequence. The electron injection layer is composed of a rubidium compound doped layer and a ferric salt doped layer. The rubidium compound doped layer includes a rubidium compound material group and an electron transport material doped in the rubidium compound material. The rubidium compound material includes at least one selected from rubidium carbonate, rubidium chloride, rubidium nitrate, and rubidium sulfate. The electron transport material includes at least one selected from 4,7-diphenyl-1,10-phenanthroline, 2-(4'-tert-butylphenyl)-5-(4'-biphenyl)-1,3,4-oxadiazole, 8-hydroxyquinoline aluminum, and N-arylbenzimidazole. The ferric salt doped layer includes a ferric salt material and a bipolar organic transport material doped in the ferric salt material. The ferric salt material includes at least one selected from ferric chloride, ferric bromide and ferric sulfide.