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899 results about "Sodium oleate" patented technology

Molybdenum disulfide/mesoporous carbon composite electrode material as well as preparation method and application thereof

ActiveCN103915630AImprove the utilization rate of electrochemical activityIncrease spacingCell electrodesSecondary cellsChemical reactionThiourea
The invention discloses a molybdenum disulfide / mesoporous carbon composite electrode material as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing an oleic acid molecule intercalation molybdenum disulfide precursor through a hydrothermal reaction by adopting oleic acid and sodium oleate as a structure-directing agent and sodium molybdate and thiourea as a molybdenum source and a sulfur source; introducing dopamine into an interlayer by virtue of a chemical reaction of dopamine and oleic acid molecules; self-polymerizing molybdenum disulfide interlayer dopamine to form poly(dopamine) by adopting a tri-block copolymer, polyoxyethylene-polypropylene oxide-polyxyethylene, as a soft template, and then performing a high-temperature carbonization process to prepare the mesoporous carbon-embedded molybdenum disulfide interlayer nano hybrid material. By embedding mesoporous carbon, not only can the interlayer distance of molybdenum disulfide be increased and the re-accumulation of nano-sheets be effectively prevented, but also the electronic conductivity of molybdenum disulfide can be remarkably improved. An electrochemical test result proves that as a lithium ion battery negative material, the molybdenum disulfide / mesoporous carbon composite electrode material has high specific capacity, excellent rate performance and excellent cycling performance, and can be widely applied to the field of lithium ion batteries.
Owner:EAST CHINA UNIV OF SCI & TECH

Beneficiation method of high calcium carbonate content type fluorite ore

ActiveCN103706485AReduce lossesImprove rougher recoveryFlotationHydrofluoric acidHigh calcium
The invention relates to a beneficiation method of high calcium carbonate content type fluorite ore and belongs to the field of beneficiation. The beneficiation method comprises the steps of conducting flotation, wherein ore grinding is conducted on the high calcium carbonate content type fluorite ore until the fluorite ore with the granularity smaller than 74 microns accounts for 78%-92% firstly, secondly, sodium carbonate serving as a pulp regulator, acidized sodium silicate serving as a gangue inhibitor and sodium oleate serving as a catching agent are added in sequence, and then a fluorite rough concentrate is obtained; conducting concentration six times, wherein concentration is conducted on the fluorite rough concentrate obtained through the last step six times, acidized sodium silicate serving as a gangue inhibitor and tannin are added in sequence every time concentration is conducted from the third time to the sixth time, and a fluorite concentrate pulp is obtained after concentration is conducted six times; conducting acid leaching, wherein the fluorite concentrate pulp obtained from the last step is concentrated, hydrofluoric acid is added, the fluorite concentrate pulp and the hydrofluoric acid are evenly mixed, leaching is conducted, and a high-grade fluorite concentrate can be obtained after liquid-solid separation. By the adoption of the beneficiation method, the beneficiation effect is good and the recovery rate of fluorite is high.
Owner:KUNMING UNIV OF SCI & TECH

Method for recycling carbon and electrolytes from waste cathode carbon block of aluminum electrolytic cell

InactiveCN105821445AReduce dosageReduced dosage of chemicals (reduced amount of collectorElectrolysis componentsCalcium/strontium/barium fluoridesKeroseneFuel oil
The invention discloses a method for recycling carbon and electrolytes from a waste cathode carbon block of an aluminum electrolytic cell. The method comprises the following steps that 1, the cathode carbon block is crushed and grinded; 2, cathode carbon powder obtained from the cathode carbon block subjected to crushing and grinding in the step 1 is stirred and leached in alkali liquor and then filtered, so that a filter cake A1 and filtrate B1 are obtained; and a precipitating agent is added into the filtrate B1, so that a filter cake A2 and filtrate B2 are obtained after filtering is conducted; and 3, the filter cake A1, the filter cake A2, a flotation medium and flotation reagents are subjected to mixing and pulp conditioning, and thus the carbon and electrolytes are obtained through flotation and separation; the flotation reagents comprises the collecting agents, the foaming agents and the conditioning agents; the collecting agents are composed of the collecting agent C1 and the collecting agent C2 at the mass ratio of 0.65-0.75:0.25-0.35; the collecting agent C1 is selected from at least one of coal tar, heavy oil, kerosene and diesel oil; and the collecting agent C2 is selected from at least one of dodecylamine, sodium dodecyl benzene sulfonate, sodium oleate and sodium dodecyl sulfate. According to the method for recycling the carbon and the electrolytes from the waste cathode carbon block of the aluminum electrolytic cell, the carbon powder and the electrolytes are effectively separated and recycled from the waste cathode carbon block.
Owner:CENT SOUTH UNIV

Method for roughing and tailings-discarding of fine rutile ore by multi-stage floatation

InactiveCN101607230AReduce consumptionEffective deslimingFlotationLead nitrateSilicate minerals
The invention provides a method for roughing and tailings-discarding of fine rutile ore by multi-stage floatation, relating to the technique for roughing and tailings-discarding of fine rutile ore by multi-stage floatation and belonging to the technical field of mineral processing engineering. The method of the invention comprises the following steps: firstly, conducting the reverse floatation of rutile by using sodium oleate as a collector according to the characteristics that aluminum sulfate can inhibit the rutile and activate silicate minerals in varying degrees, so as to effectively deslime in the process of reverse floatation; and then, conducting the forward floatation of rutile by using lead nitrate (or lead acetate) as an activator of rutile and using sodium alkyl hydroxamate and benzyl arsonic acid (or styryl phosphonic acid) as a combined collector according to the characteristic that gangue minerals can be inhibited on a combined basis under the synergistic action of sodium fluorosilicate, carboxymethylcellulose and the residual aluminum sulfate in the ore pulp, briefly, the method of the invention can realize the roughing and tailings-discarding of fine rutile by the multi-stage floatation comprising the following steps: firstly, conducting the reverse floatation by inhibiting the rutile; and then, conducting the forward floatation by activating the rutile. The method of the invention has the advantages that the enrichment ratio and recovery rate of rutile are high, the tailings of rutile ore can be discarded thoroughly and the mineral processing cost of rutile can be greatly reduced.
Owner:KUNMING UNIV OF SCI & TECH

Super slump type polycarboxylate water reducing agent for bored pile concrete and preparation method thereof

The invention provides a super slump type polycarboxylate water reducing agent for bored pile concrete. The water reducing agent is in a liquid state and comprises the following ingredients: sodium oleate, water reducing type polycarboxylate plasticizer, slump type polycarboxylate plasticizer, hydroxyethylidene diphosphonic acid, 2-acrylamide-2-methylpropanesulfonic acid/itaconic acid/acrylic acid terpolymer, hydroxypropyl methyl cellulose or hydroxyethyl methyl cellulose, air entraining agent and triisopropanolamine. The super slump type polycarboxylate water reducing agent for bored pile concrete provided by the invention has the following beneficial effects that by using the super slump type polycarboxylate water reducing agent, the bored pile concrete is good in homogeneity, the static bleeding rate of the bored pile concrete can be generally less than 1%, stable working performance can be maintained within a long time span, meeting the working property of concrete after 0.5-5.0h can be met by adjusting the formulation and dosage and improving the compressive strength ratio of the concrete, and the 28 d strength can be more than 130% of that of benchmark concrete. The invention further provides a preparation method of the super slump type polycarboxylate water reducing agent for bored pile concrete.
Owner:北京金隅节能科技有限公司

A kind of flotation enrichment process of siliceous-calcium type fluorite ore

ActiveCN102294296AProcess advantagesControl floatFlotationWet separationMaceralSilicon
The invention relates to a floatation and enrichment process for silicon-calcium mass type fluorite ores, which is characterized by comprising the following steps: dissociating the constituent mineral monomers of the silicon-calcium mass type fluorite ores by crushing and ore grinding, flowing into a stirring tank after adding water and regulating pulp, then adding a regulating agent of sodium carbonate, water glass, S711 and a collecting agent of sodium oleate into the ore pulp for regulating the pulp, roughing the material of which the pulp is regulated, selecting roughed foam for the firsttime, selecting the foam which is selected for the first time for the second time, combining a product in a primary selecting tank, i.e. middlings which are selected for the first time and a product in a secondary selecting tank, i.e. middlings which are selected for the second time, adding the regulating agent and the collecting agent of the sodium oleate, regulating the pulp, selecting the material of which the pulp is regulated again, returning the foam which is selected again for the roughing operation, selecting the foam which is selected for the second time for the third time until selecting for the fifth time, returning the middlings which are selected for the third time, the fourth time and the fifth time by adopting the separating operation, grading the foam which is selected forthe fifth time by a cyclone, overflowing the cyclone, concentrating and filtering to obtain a fluorite concentrate product. The process disclosed by the invention has the advantages of high separation efficiency, excellent process index, high quality of obtained fluorite concentrates and the like.
Owner:BLUESTAR LEHIGH ENG INST CO LTD

Nimodipine lipid microsphere injection and preparation method thereof

The invention provides a nimodipine lipid microsphere injection, which is prepared from the following components in percentage by weight: 0.08 percent of nimodipine, 0.5 to 2.3 percent of lecithin for injection, 2 to 8 percent of soybean oil for injection, 2 to 8 percent of medium chain fatty acid for injection, 1 to 3 percent of glycerin, 0.1 to 0.2 percent of tween-80, 0.03 to 0.05 percent of sodium oleic acid, and the balance being water for injection. The preparation method comprises steps of preparation of an oil phase, preparation of water phase, preparation of colostrum, homogenization and canning. In the nimodipine lipid microsphere injection, the soybean oil for injection and the medium chain fatty acid for injection are used to prepare the oil phase, the nimodipine is a fat soluble drug and can be better dissolved in the oil phase, the lipid microsphere in which the soybean oil for injection is the main component has solvent characteristics, is non-toxic, and can guide the fat soluble drugs to be dissolved in emulsion particles and perform the metabolism along with lipid oil drops and slowly release, thereby maintaining the effective blood concentration, lowering toxic and side effects of the drugs, increasing the solubility and stability of the nimodipine drug, improving the drug-loading rate and reducing the hydrolysis of the drugs.
Owner:沈阳信康药物研究有限公司

Preparation method and application of magnetic chitosan nanometer material

The invention relates to a preparation method and application of a magnetic chitosan nanometer material which is used for removing phosphorus from treated phosphorus wastewater. The magnetic chitosan nanometer material can be used for removing phosphorus in industrial wastewater and domestic wastewater, thus facilitating purification of the environment. According to the technical scheme, the preparation method comprises the following steps: firstly soaking chitosan powder in a sulfuric acid solution, separating, washing, drying, and pounding into powder to obtain modified chitosan; subsequently preparing a mixed solution from ferrous salt and ferric salt, adding ammonia water under water bath till the pH is 11, stirring and reacting for 1 hour, adding a sodium oleate solution and reacting for 3 hours, separating and then washing, drying and grinding solid into fine powder so as to obtain nano ferroferric oxide; and finally preparing a chitosan acetate solution form the modified chitosan, then adding the nano ferroferric oxide, Span-80, liquid paraffin and a glutaraldehyde solution and reacting four 3-4 hours in the water bath, and then separating, washing and drying to prepare the magnetic chitosan nanometer material. By modifying the modified chitosan and the sodium oleate, the adsorption effect is improved by the method; the magnetic chitosan nanometer material is applicable to treatment of the industrial wastewater and the domestic wastewater.
Owner:SOUTHWEST PETROLEUM UNIV

Flotation two-stage desiliconization method for high-silicon bauxite

ActiveCN102489411AReduce distractionsEfficient enrichment and recoveryFlotationSodium phosphatesEngineering
The invention relates to a flotation two-stage desiliconization method for high-silicon bauxite, which is a flotation desiliconization technology for bauxite and belongs to the technical field of mineral processing engineering. The method comprises the following steps of: coarsely grinding the bauxite into particles with certain fine granularity; under the condition of a certain ore pulp concentration, performing flotation first-stage desiliconization by using sodium carbonate as a pH regulator and a dispersing agent of the ore pulp, water glass and sodium hexametaphosphate as a combined inhibitor of gangue mineral, lead acetate as an activating agent of the bauxite, sodium oleate as a collector of the bauxite and pine oil as a foaming agent, wherein the base flow in a flotation groove is a section of silicon-containing tailings; allowing foam products to enter a grinding machine and grinding the foam products into particles with fine granularity; adding the medicaments sequentially and mixing pulp; performing flotation second-stage desiliconization, wherein the base flow in the flotation groove is a section of silicon-containing tailings; and selecting the foaming products for multiple times to form bauxite concentrate. The sectional desiliconization method for 'flotation first-stage desiliconization after coarse grinding and flotation second-stage desiliconization after regrinding rough concentrate' is utilized, so the influence of ore argillization phenomenon on desiliconization is greatly reduced, the flotation desiliconization effect on the high-silicon bauxite is obvious, the silicon dioxide content of the bauxite concentrate can be reduced greatly, the ratio of aluminum to silicon of the bauxite concentrate is increased, and the recovery rate is high.
Owner:山西道尔铝业有限公司

Carbon nano-sphere/NiCo2O4 composite material as well as preparation method and application thereof

The invention relates to a high-energy-density carbon nano-sphere/NiCo2O4 composite material of a lithium ion battery and a super-capacitor as well as a preparation method and application of the composite material. The nano-sphere/NiCo2O4 composite material is a core-shell structure nano sphere with the grain diameter of 100-300nm; and the inner layer of the nano-sphere/NiCo2O4 composite material is a carbon nano sphere with the grain diameter of 50-200nm and the outer layer of the nano-sphere/NiCo2O4 composite material is a NiCo2O4 coating layer with the thickness of 20-100nm. The preparation method comprises the following steps: mixing the carbon nano sphere with the grain diameter of 50-200nm with sodium oleate and uniformly dispersing by ultrasounds; then adding weak alkali, Co<2+> and Ni<2+>; and uniformly mixing, then carrying out hydrothermal treatment to obtain the carbon nano-sphere/NiCo2O4 composite material with the core-shell structure. The method has the advantages of simplicity in operation, environment friendliness, wide raw material resource, low production cost and the like, and is suitable for large-scale production and preparation. The first-time discharge capacity of a lithium ion battery negative electrode material prepared from the material can reach 1600mAh/g. The material is used as a super-capacitor electrode material and has the specific capacitance being up to 1420F/g (1A/g).
Owner:WUHAN UNIV

Preparation method and purpose thereof of spherical ferriferrous oxide nano particles with controllable size

InactiveCN104167536AUniform shapeThe particle size can be adjustedCell electrodesSecondary cellsActive agentEngineering
The invention discloses a preparation method of spherical ferriferrous oxide nano particles with controllable size, which is characterized in that sodium oleate is taken as a synthesis auxiliary agent and a surfactant, a hydrothermal method is used for one-step preparation in a glycol system. The method comprises the following steps: dissolving soluble ferric salt and a certain amount of sodium oleate in glycol, stirring for more than 2 hours; then sealing the mixed liquor in a polytetrafluoroethylene lined high-pressure reaction vessel, cooling and then centrifuging and washing to obtain the spherical ferriferrous oxide nano particles. According to the invention, the technology is more reliable and has the advantage of high repeatability, only sodium oleate used in a system is taken as a reaction auxiliary agent, and the particle size of the spherical ferriferrous oxide can be regulated and controlled by adjusting the addition of sodium oleate. The prepared ferriferrous oxide has a grading structure, the process is easily controlled and realized, and the preparation method has the advantage of friendly environment. The prepared spherical particles of ferriferrous oxide can be used as a lithium ion battery cathode material, the experiment shows that the spherical particles have excellent cycle performance and good application prospect.
Owner:ZHEJIANG UNIV

Pollution-free, high-efficiency and long-distance pipe installing and cleaning system

The invention discloses a pollution-free, high-efficiency and long-distance pipe installing and cleaning system, and belongs to the field of pipe cleaning. The pollution-free, high-efficiency and long-distance pipe installing and cleaning system comprises a ball sending device, a ball receiving device, pipe cleaners and a chemical agent, wherein the ball sending device and the ball receiving device are installed at the two ends of a pipe to be cleaned; the pipe cleaners and the chemical agent form a pipe-cleaning train of the pipe cleaner-the chemical agent-the pipe cleaner; the pipe cleaners comprise a first pipe cleaner and a second pipe cleaner; the first pipe cleaner is sent into a pipe to be cleaned and at a 10cm position from an inlet; the second pipe cleaner is put into the ball sending device; the chemical agent is positioned between the two pipe cleaners; the chemical agent comprises a passivating agent or a degreasing agent; the passivating agent comprises 2-3% of sodium nitrite, 0.5-1% of trisodium phosphate and 96-97.5% of water; the degreasing agent comprises 2-3.5% of sodium tripolyphosphate, 1-2% of sodium carbonate, 0.5-1.5% of sodium hydroxide, 0.2-0.4% of sodium borate, 0.1-0.2% of disodium ethylenediamine tetraacetate, 0.05-0.1% of sodium oleate, 0.05-0.1% of sodium dodecyl sulfate, 0.05-0.1% of alkylphenol ethoxylate and 92.1-96.05% of water. The pollution-free, high-efficiency and long-distance pipe installing and cleaning system can achieve synchronous and high-efficiency operation of physical cleaning and chemical cleaning of a long-distance pipe.
Owner:CHINA NAT CHEM ENG THIRD CONSTR

Visible light responded load type Bi2WO6/Bi2O3 heterojunction photocatalyst and preparation method thereof

The invention relates to a visible light responded load type Bi2WO6 / Bi2O3 heterojunction photocatalyst and a preparation method thereof. The visible light responded load type Bi2WO6 / Bi2O3 heterojunction photocatalyst is prepared from the following components in parts by weight: sodium oleate, an ethanediol solution, bismuth nitrate, sodium tungstate and a carrier. The preparation method is simple and the operation is simple and convenient; preparation conditions are moderate and are free from toxin and secondary pollution is not caused in a preparation process; the batch production can be realized; the prepared visible light responded load type Bi2WO6 / Bi2O3 heterojunction photocatalyst has a high visible light absorption capability, has strong light absorption property and strong organic matter light degradation capability in a visible light region, and has a good application prospect of degrading RhB under the visible light; and particularly, the degradation rate of rhodamine B can be up to 99.5% under the condition of illuminating for 90 minutes under visible light with the wavelength more than nm. The prepared composite photocatalyst is convenient to recycle and reuse, and the difficulty that the recycling is difficult when a photocatalysis technology is actually applied in environment purification can be solved.
Owner:JILIN UNIV
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