115 results about "Sodium oleate" patented technology

The invention discloses a combined inhibitor for high-mud-content scheelite flotation and application, belongs to the technical field of scheelite flotation, and aims to solve the technical problems that in the high-mud-content scheelite flotation process, argillaceous particle adsorption agents and gangue inhibition are not thorough, and an existing inhibitor is poor in selectivity, large in dosage and the like. The combined inhibitor comprises tannic acid / sodium humate and metal ions and is matched with the pH regulator to form a flotation reagent system, the collecting agent is prepared by compounding sodium oleate, oxidized paraffin soap and sodium dodecyl benzene sulfonate according to the mass ratio of 3: 1: 1, and the foaming agent is MIBC or terpenic oil. Through the synergistic effect of tannic acid / sodium humate-metal ions, mud dispersion and inhibition of fluorite and calcite can be synchronously achieved, and flotation of scheelite with the high mud content is enhanced; through one-stage roughing, three-stage scavenging and three-stage heating concentration, the grade and the recovery rate of WO in scheelite concentrate are improved, and the method is low in reagent dosage, environmentally friendly and suitable for industrial production.

The invention provides a collecting agent for micro-fine particle quartz ore and a preparation method and application of the collecting agent, and relates to the technical field of mineral flotation. Specifically, the preparation method of the collecting agent comprises the steps that a mixture containing the graphene and the sodium oleate is subjected to cold plasma treatment, and the graphene and the sodium oleate are grafted to obtain the collecting agent. The collecting agent can be used for mineral flotation, and high-purity quartz can be efficiently obtained; on the basis of the net capturing performance of graphene and functional groups corresponding to grafted sodium oleate, the flocculation effect on micro-fine quartz is achieved, so that the quartz is efficiently captured, the problem that the fine quartz is free in ore pulp due to large free energy in the flotation process and is difficult to capture and float is solved, the flotation separation efficiency is improved, the separation index is improved, and the flotation cost is reduced. Good application prospects are realized.

The invention discloses a method for preparing a piezoelectric catalytic ceramic membrane at low temperature based on nano-particle modified rod-like barium titanate powder, which comprises the following steps: preparing nano-particle modified rod-like BaTiO3 powder from Bi4Ti3O12, BaCl. 8H2O, sodium oleate, deionized water and a NaOH solution, granulating, pressing and calcining to obtain a ceramic membrane product, and further carrying out electric polarization to obtain the piezoelectric catalytic ceramic membrane. The rod-like BaTiO3 powder of the nanoparticles with high surface activity not only ensures the mechanical strength of the ceramic membrane, but also effectively reduces the firing temperature. Meanwhile, the surface of the prepared ceramic membrane is of a wormlike curved surface structure, the pore size distribution is uniform, the stable separation performance is achieved, and the catalytic degradation function is achieved after electric polarization. The method is green and energy-saving, and the product can be applied to the fields of solid / gas and liquid separation, water environment restoration and the like, and has good application value.

The invention relates to a resourceful treatment method for a bauxite ore washing tail mud reservoir, which comprises the following specific steps: 1, carrying out cyclone classification on tail mud in the tail mud reservoir, and separating out coarse particles with A / S greater than or equal to Y and A / Slt; and Y fine particles. And 2, carrying out flotation treatment on the coarse particles. And potassium carbonate is added as a dispersing agent and a pH value adjusting agent, the pH value of the ore pulp is adjusted to 8.0-10.5, then sodium oleate is added as a collecting agent, and finally bauxite concentrate and flotation tailings are obtained. And 3, dehydrating the fine particles to obtain dehydrated tail mud with the water content of less than or equal to 20%. And 4, adding the flotation tailings and the dehydrated tail mud into a curing agent or a soil conditioner to form cultivable soil which is used for ecological restoration of the stony desertification area. Potassium carbonate is used for replacing sodium carbonate to reinforce flotation, so that tailings can be used as potassium-rich cultivation soil; the dam break risk can be eliminated after the tail mud is dehydrated; tailings and fine particles are compounded to form cultivation soil to treat stony desertification, silicon fertilizer is synchronously produced, the annual income is larger than or equal to 0.3 million yuan, and safe, resource and ecological cooperative treatment is achieved.

The invention provides a preparation method of a low-sulfur diesel oil anti-wear agent, and belongs to the technical field of carbon-containing fuel processing, and the preparation method comprises the following steps: adding sodium oleate, tetrabutylammonium bromide and xylene into a three-necked flask, uniformly stirring and mixing, heating, dropwise adding 3-chloro-1, 2-propylene glycol, continuously heating until reflux, centrifuging, and carrying out rotary evaporation to obtain glyceryl monooleate; the preparation method comprises the following steps: dispersing NCC in xylene, adding lauric acid and p-toluenesulfonic acid, and carrying out heating, reflux reaction, cooling, centrifugation, washing and drying under the protection of an inert atmosphere to obtain modified NCC; the preparation method comprises the following steps: heating and melting glyceryl monooleate, adding silane modified silicon dioxide, stirring, carrying out ultrasonic treatment, cooling to obtain a modified nano-composite, adding the modified NCC and a stabilizer, stirring, and carrying out ultrasonic uniform mixing to obtain the low-sulfur diesel oil anti-wear agent. The diesel oil anti-wear agent provided by the invention can improve the wear resistance of diesel oil under the condition that the addition amount is relatively low, and improve the low-temperature fluidity and demulsifying performance.

The invention discloses a pH-responsive alkaline clean fracturing fluid as well as a preparation method and application thereof, and belongs to the technical field of oil and gas field fracturing. The cleaning agent comprises the following components in parts by mass: 1-5 parts of an anionic surfactant, 1-5 parts of a zwitterionic surfactant, 0.2 part of a pH regulator and 100 parts of deionized water, wherein the anionic surfactant is sodium oleate or sodium stearate; the zwitterionic surfactant is erucyl amide propyl betaine or oleamide propyl betaine; and the surfactant is a surfactant. The pH regulator is any one of sodium hydroxide, potassium hydroxide and sodium bicarbonate. The fracturing fluid is a clean fracturing fluid system based on pH response type micelle dynamic reconstruction, and through the synergistic effect of a specific surfactant and a pH response mechanism, accurate and rapid regulation and control of viscosity, zero residue damage and construction process simplification are achieved; the technical problems that an existing surfactant fracturing fluid is complex in compounding process, cannot be recycled after gel breaking, is slow in gel breaking response and narrow in application range are solved.

This invention relates to the field of coating technology, specifically to a protective coating for stone surfaces with good waterproof performance and its preparation method, comprising the following steps: S1. Treating microcrystalline cellulose to obtain product 1 for later use; S2. Reacting product 1 from step S1 with titanium tetrachloride to obtain nano-titanium dioxide for later use; S3. Mixing the nano-titanium dioxide from step S2 with sodium oleate and adjusting the pH to 6.5-7.5 to obtain product 2 for later use; S4. Performing surface synergistic hydrophobic modification treatment on product 2 to obtain functional filler. This invention discloses a protective coating for stone surfaces with good waterproof performance, using fluorinated acrylic resin as the base resin, incorporating functional filler, and combining it with a curing agent, mixed solvent, defoamer, and leveling agent. Through the synergistic effect between the components, this protective coating for stone surfaces possesses good waterproof performance as well as good resistance to ultraviolet aging and acid corrosion.

The invention belongs to the field of catalysts, and particularly relates to a nitrogen-sulfur co-doped Fe-based diatomic catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking hexamethylenetetramine and 2, 4-dihydroxybenzoic acid as hard templates and sodium oleate, P123 and polyethylene glycol with the molecular weight of 4000 as soft templates, uniformly mixing, carrying out hydrothermal reaction to prepare HBP, loading Fe ions, and carrying out nitrogen and sulfur doping with thiourea through high-temperature calcination to obtain the nitrogen and sulfur doped hollow carbon bowl loaded Fe-based diatomic catalyst. The catalyst shows excellent ORR catalytic activity under an alkaline condition and shows excellent application performance in a zinc-air battery.

This invention discloses a combined collector for low-temperature iron ore flotation desilication and its application, belonging to the field of iron ore flotation technology. The combined collector of this invention is an anionic combined collector, composed of three components: component 1 is sodium oleate, component 2 is sodium linoleate, and component 3 is sodium decanoate. Components 1, 2, and 3 are each prepared into 5% (w / w) aqueous solutions. The ratio of the aqueous solutions of components 1, 2, and 3 is adjusted and mixed evenly to obtain the combined collector for low-temperature iron ore flotation desilication. This combined collector is used for reverse flotation desilication of difficult-to-process iron ores under low-temperature conditions (10℃-15℃). This combined collector overcomes the shortcomings of traditional anionic collectors, which have poor collection ability under low-temperature conditions. It reduces the pulp temperature required for reverse flotation desilication of iron ore (no heating required), effectively reducing the energy consumption of the concentrator. Furthermore, the components of the combined collector are widely available, commercially accessible, and low in cost, which is conducive to industrial-scale promotion and application.

The application provides a fluorapatite phosphate ore reverse flotation magnesium removal collector and application thereof, which comprises basic substances and water, and the basic substances are mixed according to the mass ratio, wherein the ratio of fatty acid soap, surfactant and additive is 11:3:2; the fatty acid soap is one or a mixture of two of sodium oleate, oxidized paraffin soap; the surfactant is one or any ratio of sodium dodecyl sulfonate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, sodium citrate, sodium acetate and sodium benzoate; and the additive is sodium naphthenate. The fluorapatite phosphate ore reverse flotation magnesium removal collector provided by the application can effectively separate apatite and dolomite, significantly improve the collecting capacity and selectivity by adding surfactants and additives, and the surfactant composition weakens the influence of Fe 3+ on the flotation system.

The invention relates to the technical field of aluminiferous rock series ore processing, in particular to a method for sorting and extracting titanium concentrate from aluminiferous rock series ore. The method comprises the steps that the aluminiferous rock series ore is subjected to crushing and first grinding in sequence, and first ore pulp is obtained; the first ore pulp is subjected to desiliconization direct flotation through a first acid-base regulator and a first collecting agent, and desiliconized rough concentrate pulp is obtained; the first collecting agent comprises at least one of sodium oleate, sodium benzohydroxamic acid and sodium salicylhydroxamic acid; the desilicication rough concentrate pulp is subjected to secondary grinding, and second ore pulp is obtained; performing micro-bubble flotation on the second ore pulp by using a second pH regulator, an inhibitor, an activating agent, a second collecting agent and a foaming agent to obtain titanium concentrate; and the second collecting agent comprises (2-hydroxy-2-methyl propyl) (phenyl) phosphinic acid, diphenyl phosphinic acid and diisooctyl phosphinic acid. According to the method, the yield of the titanium concentrate is increased through the synergistic effect of stage grinding separation, precise reagent matching and micro-bubble enhanced separation.

A lipid-containing composition, by weight, includes phospholipids, and one or more of vegetable oil, medium-chain triglycerides, antioxidants, and sodium oleate. It has been verified that the various compositions provided by this invention competitively capture protein-bound toxoids in the blood, thereby achieving the purpose of clearing protein-bound toxoids from the blood, especially for patients with liver failure, and also alleviating oxidative stress in patients during dialysis treatment.

The invention discloses a multi-cavity carbon nanorod packaged bismuth oxide catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalyst preparation. The preparation method comprises the following steps: constructing a composite micelle containing metal ions by using a dual-surfactant P123 and sodium oleate, co-assembling the composite micelle with a melamine oligomer generated based on a Schiff base reaction, and carbonizing and reducing to obtain the nitrogen-doped carbon nanorod loaded bismuth oxide nanoparticle catalyst with a chamber structure. The prepared catalyst has excellent catalytic performance and stability when applied to preparation of formic acid through reduction of carbon dioxide under electro-catalysis, the highest Faraday efficiency of formic acid under the potential of-1.3 V vs.RHE is 96%, and the partial current density of formic acid can reach 34.8 mA cm <-2 >. In the catalysis process of 42 h, the Faraday efficiency of formic acid can be kept at 86% or above, and the method has good application prospects.

The invention relates to the technical field of mineral separation technologies, in particular to a combined inhibitor and method for reverse flotation magnesium removal of sedimentary phosphorite, and the combined inhibitor is prepared by compounding the following components in parts by mass: 20-30 parts of aluminum sulfate octadecahydrate, 50-70 parts of tartaric acid and 10-20 parts of citric acid. The method is completed through a technical route of coupling regulation and inhibition of apatite by a combined inhibitor and reinforced separation of calcium and magnesium carbonate minerals by a mixed collecting agent. The method comprises the following steps: removing magnesium through a'one-roughing, one-refining and one-sweeping 'process under the condition that the pH value is 6-7 by combining with a sodium oleate / dodecylbenzene sulfonic acid / 2-ethylhexyl phosphate 2-ethylhexyl ester mixed collecting agent, so as to obtain phosphate concentrate with MgO less than 0.8%, P2O5 more than 29% and recovery rate more than 90%.

The invention discloses low-carbon ferronickel slag recycled concrete, and relates to the technical field of concrete. The low-carbon ferronickel slag recycled concrete is prepared from the following raw materials in parts by weight: 280 to 330 parts of cement, 230 to 250 parts of ferronickel slag powder, 940 to 1050 parts of recycled coarse aggregate, 590 to 650 parts of fine aggregate, 6 to 7 parts of water reducing agent, 280 to 290 parts of water and 25 to 40 parts of reinforced fiber, the preparation method of the ferronickel slag powder comprises the following steps: preparing a mixture of ferronickel slag and a grinding aid, and grinding to obtain the ferronickel slag powder, the grinding aid is prepared from 2-acrylamido-2-methylpropanesulfonate, sodium oleate and an exciting agent. The grinding aid can effectively stimulate the activity of the ferronickel slag and improve the particle size distribution of the ferronickel slag, so that the low-carbon ferronickel slag recycled concrete has high compressive strength.

The invention belongs to the technical field of biological medicines, and particularly relates to a hyaluronic acid-oleic acid conjugate as well as a preparation method and application thereof. The hyaluronic acid-oleic acid conjugate with the structure shown in the formula I belongs to a macromolecular emulsifier, and has a lower CMC value and higher stability compared with an oleic acid or sodium oleate micromolecular emulsifier, so that the hyaluronic acid-oleic acid conjugate can entrap water-insoluble active substances. The hyaluronic acid is modified by using oleic acid, so that the permeation effect of the supramolecular self-assembled nanoparticles can be improved by virtue of the percutaneous permeation promotion effect of the oleic acid, meanwhile, skin pore blockage caused by oil-soluble raw and auxiliary materials is avoided, and the skin problems of coarse pores, blackheads and the like are reduced. Besides, the hyaluronic acid-oleic acid conjugate provided by the invention can play a role in repairing the skin by the hyaluronic acid and the oleic acid, and meanwhile, the efficacy of the oil-soluble cosmetics is further improved by virtue of the permeation enhancing effect of the oleic acid. Formula I

The purpose of this invention is to provide a method for preparing highly dispersible calcium carbonate based on direct mineralization of calcium carbide slag, belonging to the field of highly dispersible calcium carbonate production technology. The method includes a first-stage activation process: calcium carbide slag, sodium tripolyphosphate, sodium oleate, and water are mixed to form a slurry, and CO2 is introduced to carbonize the slurry, achieving initial dispersion of calcium carbonate. A second-stage activation process involves adding stearate to the mineralized carbonized slurry for in-situ activation. Finally, the slurry is filtered and dried to obtain the highly dispersible calcium carbonate product. The advantages of this invention are that the synergistic effect between the two-stage activation processes inhibits the agglomeration of calcium carbonate particles, and the process and equipment are simple, highly practical, and easy to industrialize.

The invention relates to the technical field of mineral separation, in particular to a method for synchronously removing silicon and magnesium impurities by reverse flotation of collophanite, which comprises the following steps of: grinding raw ore, and synchronously removing the silicon and magnesium impurities in the collophanite by adopting a closed-loop process comprising primary roughing, primary scavenging, secondary concentration, middling regrinding-concentration and primary fine scavenging; wherein a compound of amino trimethylene phosphonic acid and sodium ardronate is used as an inhibitor of collophanite; a compound of 11-aminoundecanoic acid, dodecyl trimethyl ammonium bromide and sodium oleate is adopted as a synchronous reverse flotation collecting agent of the magnesium-silicon gangue minerals; flotation is carried out in a weakly alkaline ore pulp system, and the pH value of ore pulp is 8-10. According to the method, silicon-calcium gangue minerals are subjected to synchronous reverse flotation by selectively inhibiting apatite-multi-component collecting agent under weak base.

The invention discloses a sodium oleate bacterial endotoxin detection method, which comprises: S1, adding a sodium oleate sample to be detected into BET water, mixing, and placing in a water bath to dissolve; s2, after dissolving, adjusting the PH to be neutral by using hydrochloric acid to obtain a test sample solution with the initial concentration of 100-200mg / ml, and diluting the test sample solution by using a diluent to obtain a series of test sample solutions with dilution concentrations; the diluent is diluted by the steps of a magnesium ion buffer solution, a Tween-containing BET aqueous solution and BET water; s3, detecting the diluted sample solution to be tested; and S4, setting the positive control solution, the positive control group and the negative control group of the test sample, performing the same detection with the test sample solution, and performing comparison. The method can be used for quantitatively, efficiently and quickly detecting the bacterial endotoxin in the sodium oleate sample to be detected.

The present invention relates to the technical field of nanosilver preparation and discloses a method for preparing nanosilver. The method comprises providing a base liquid containing nanosilver particle seed crystals, a dispersant, a gel material, and a solubilizing agent; adding a silver salt solution and a reducing agent solution to the base liquid in parallel, wherein the silver ions are reduced to elemental silver during the addition process; after the silver salt solution is added, a metal chelating agent is added to the reaction system for a full reaction; after the reaction, a slurry is obtained, and solid nanosilver is extracted from the slurry; the solubilizing agent is selected from at least one of sodium oleate, polysorbate 80, and propylene glycol. This method reduces the difficulty of separating and purifying the obtained nanosilver; and the entire preparation process is simple. The obtained nanosilver has a particle size between 200 and 500 nm and good monodispersity, and has broad application prospects in the field of conductive pastes.

The application discloses a combined collector and application thereof in potassium feldspar reverse flotation desilication, and belongs to the technical field of mineral processing engineering. The combined collector is composed of sodium oleate and cetyltrimethylammonium chloride. When the total dosage of the medicament is 1*10 ‑4 mol / L to 6*10 ‑4 mol / L, pH is 10.0, and the molar ratio of cetyltrimethylammonium chloride to sodium oleate in the combined collector is 1:3 to 1:2, the high-efficiency reverse flotation separation of potassium feldspar and quartz can be realized. The combined collector has the advantages of strong collecting capacity, low production cost, small medicament dosage, good selectivity, environmental protection and safety, and can balance the separation effect and economic benefits. The combined collector of sodium oleate and cetyltrimethylammonium chloride is used for the flotation separation of potassium feldspar and quartz.

This invention discloses a glycyrrhizic acid nanomedicine, its preparation method, and its applications, belonging to the field of biomedical nanomaterials technology. The glycyrrhizic acid nanomedicine is prepared by reacting ammonium glycyrrhizate and sodium oleate at a temperature of 15-40 °C. o Glycyrrhizate nanomedicine was prepared via a microemulsion method at temperature C. After entering tumor cells, the glycyrrhizate nanomedicine was rapidly degraded within the acidic lysosomes of the tumor cells, releasing a large amount of sodium. + The presence of glycyrrhizic acid ions and glycyrrhizic acid ions causes a surge in intracellular ion concentration and osmotic pressure, as well as the accumulation of glycyrrhizic acid within tumor cells. This induces pyroptosis in tumor cells and regulates the expression of proliferation-related proteins. Pyroptosis releases a large number of damage-associated molecular patterns (DAMPs) to trigger immune activation, while the regulation of proliferation-related protein expression inhibits tumor cell proliferation. Under the combined effect of these two factors, glycyrrhizic acid nanomedicines can not only activate the systemic anti-tumor immune response but also reduce tumor cell spread, thereby effectively inhibiting tumor growth and metastasis and enhancing the efficacy of tumor immunotherapy.

The application relates to the technical field of fluorite ore dressing and purification, in particular to application of a lithium polysilicate inhibitor in removal of calcite in fluorite direct flotation. The application method comprises the following steps: mixing calcite-type fluorite ore powder and water to obtain fluorite ore slurry; adjusting the pH of the fluorite ore slurry to 7-8 by using a pH regulator to obtain pretreated slurry; sequentially adding lithium polysilicate inhibitor solution and sodium oleate solution into the pretreated slurry to obtain mixed slurry, and then performing direct flotation to obtain fluorite concentrate. The lithium polysilicate inhibitor shows excellent selective inhibition performance for the calcite-type fluorite ore, significantly enhances the floatability difference between the fluorite and the calcite, can effectively inhibit the calcite from floating, thereby reducing the content of the calcite in the concentrate, and improving the fluorite concentrate grade and the recovery rate.

The present application belongs to the technical field of mineral processing. The present application provides a flotation reagent for inhibiting calcite in fluorite-barite intergrowth ore, which comprises a collector and an inhibitor; the collector comprises at least one of sodium oleate and oxidized paraffin soap; the inhibitor comprises 5-mononitrate isosorbide and water glass in a weight ratio of 4-5:1. The present application also provides a corresponding flotation method, which comprises the steps of: preparing fluorite-barite intergrowth ore containing calcite into ore slurry, and then adding the collector and the inhibitor described in claim 1 or 2 to the obtained ore slurry for flotation. The present application can effectively inhibit calcite during the flotation of fluorite-barite intergrowth ore and improve the fluorite recovery rate, and the obtained CaF2 recovery rate is as high as 95% or more; the flotation reagent used in the present application has a small amount of use and low flotation cost.

The application relates to the technical field of paint, and particularly discloses a kind of nano-silver paint for low-temperature high-humidity thawing equipment and a preparation method thereof;Including the following steps: S1: with sodium oleate modified graphite loaded nano-silver wire, sodium oleate modified filler is obtained;S2: take acrylic acid, methyl methacrylate, methyl acrylate, allyl trimethyl ammonium chloride, hydroxyethyl methacrylate, styrene, butyl acrylate, di-tert-pentyl peroxide, vinyl silicone oil, sodium oleate modified filler, ethanedithiol, azobis isobutyronitrile, prepare nano-silver A;S3: take isocyanate group terminated polyurethane prepolymer as a template agent, prepare nano-silver B;S4: take polyurethane acrylate, polyacrylate, acetone, photoinitiator, nano-silver A, nano-silver B, mix evenly, get nano-silver paint.

This invention discloses the application of a combined collector in reverse flotation separation of lithium chlorite, belonging to the field of mineral flotation separation technology. The combined collector comprises dodecylamine, acetic acid, and sodium oleate. The mass ratio of dodecylamine, acetic acid, and sodium oleate in the combined collector is 1:0.1-0.2:9-11. This invention uses a combined collector composed of NaOL, DDA, and acetic acid as a collector for reverse flotation separation of lithium chlorite, which can effectively separate lithium chlorite from boehmite and kaolinite in clay-type lithium ores, thereby achieving pre-enrichment of clay-type lithium ores and reducing the amount of material processed in subsequent roasting for lithium extraction. The combined collector used in this invention has advantages such as wide availability of raw materials, low cost, simple preparation, convenient use, strong collecting ability, and good foaming performance.

The invention discloses a high-calcium fluorite ore beneficiation and enrichment method, and provides a'dense medium tailings pre-discarding-combined inhibition-efficient collector 'synergistic process aiming at the problems that fluorite and calcium-containing gangue in the high-calcium fluorite ore are difficult to separate and the recovery rate is low, and the method specifically comprises the following steps: firstly, crushing and screening raw ore, and then carrying out tailings pre-discarding through a dense medium cyclone to remove 30-35% of high-calcium tailings; after the dense medium concentrate and the fine-fraction material are combined and ground, a combined inhibitor and a collecting agent are adopted for conducting one-roughing, one-sweeping and six-concentration flotation in a weak alkaline environment, and the combined inhibitor is added in stages in the concentration stage so as to strengthen calcite inhibition. According to the method, the high-calcium ore separation bottleneck is remarkably broken through, the concentrate CaF2 grade is larger than or equal to 98.2%, the calcite residue is smaller than or equal to 0.20%, the recovery rate is larger than 85%, the using amount of the collecting agent is reduced by 40% compared with a traditional sodium oleate system, the comprehensive cost is reduced by 25%, and the method is particularly suitable for resource utilization of refractory fluorite ore with the CaCO3 content being 40-65%.

The present application relates to the field of medicine manufacturing, and relates to a preparation method of sodium oleate of plant origin, which comprises the following steps: crushing fresh plant raw materials, sufficiently stirring and kneading the fresh plant raw materials with a proper amount of solid alkali and adsorbent, adding solvent 1, filtering out pomace and adsorbent after a period of stirring and extraction reaction, and then filtering again after cooling the filtrate, adding solvent 2 to recrystallize and refine the obtained filter cake, and obtaining the final product sodium oleate after drying under reduced pressure, wherein the content of oleic acid is 45% to 80%. The present application solves the problem that the content of oleic acid in the product cannot be flexibly controlled without other changes in the prior art.

The present invention relates to the field of mineral processing technology and provides a beneficiation process for recovering mica from iron tailings, wherein the iron tailings contain 20-30% mica with a particle size of 43 μm or less. The process comprises: adding water to the concentrated and de-doped iron tailings to adjust the slurry to a mass concentration of 25-35%, then adjusting the pH of the slurry to 8-10, and then sequentially adding a slime conditioner comprising sodium hexametaphosphate, carboxymethyl cellulose, and starch, and a mica collector comprising sodium oleate, coconut amine, alkyl alcohol, and Span 60 surfactant for flotation. By employing a specific slime conditioner and mica collector, the present invention significantly improves the mica recovery rate for iron tailings with a high fine-grained mica content without the need for prior desliming, and simultaneously produces a high-grade mica concentrate. The process has the advantages of a simple process flow, advanced technical indicators, strong adaptability, and is readily applicable for industrial promotion and application.

The invention belongs to the technical field of pharmaceutical preparations, and discloses a stable aprepitant injection and a preparation method thereof. The aprepitant injection comprises the following raw materials in percentage by mass: 0.5-1% of aprepitant, 8-12% of soybean oil, 8-12% of egg yolk lecithin, 0.05-2% of egg yolk phosphatidyl glycerol, 0.5-0.8% of sodium oleate, 5-8% of cane sugar, 2-4% of ethanol and the balance of water for injection, totaling 100%. The selected co-emulsifier egg yolk phosphatidyl glycerol has two hydroxyl groups at the hydrophilic end, so that the egg yolk phosphatidyl glycerol has extremely strong emulsifying performance, is well compatible with aprepitant, has a good emulsifying effect of the preparation, and can well encapsulate aprepitant, so that the dosage of egg yolk lecithin is reduced by about one third, and the stable drug-loaded fat emulsion is formed; the preparation method is suitable for industrial production, the preparation cost is low, and the accessibility of the medicine is improved.