146 results about "Sodium oleate" patented technology

The invention discloses a feed functional compound for improving salt-alkali stress resistance of macrobrachium rosenbergii and application of the feed functional compound, and belongs to the technical field of aquaculture. The feed functional compound for improving saline-alkaline stress resistance of macrobrachium rosenbergii provided by the invention comprises vitamin D3, betaine and sodium oleate. According to the invention, the absorption promotion effect of vitamin D3 on calcium and phosphorus ions is utilized, so that the ion metabolism disorder of macrobrachium rosenbergii under saline-alkali stress is improved; by utilizing the osmotic pressure regulation capability of betaine, osmotic pressure unbalance under saline-alkali stress is improved, and the energy consumption of osmotic regulation is reduced; the sodium oleate is used for improving energy supply, the membrane structure is adjusted to improve osmotic pressure adjusting capacity, and the three components act together to achieve the purpose of improving salt-alkali stress tolerance of macrobrachium rosenbergii.

The invention discloses a nitrogen-doped oxygen-vacancy-rich three-dimensional flower-shaped bismuth oxide electrocatalyst as well as a preparation method and application thereof, relates to the technical field of electrocatalysts, and solves the problems that a traditional bismuth oxide catalyst is insufficient in electron transfer capability and low in active site utilization rate. The preparation method comprises the following steps: dissolving bismuth nitrate, polyvinylpyrrolidone and sodium oleate in a mixed solvent of methanol and N, N-dimethylformamide, and stirring and dissolving to obtain a solution A; the preparation method comprises the following steps: dissolving 1, 3, 5-tri (4-carboxyl phenyl) benzene in a mixed solvent of methanol and N, N-dimethylformamide, and stirring and dissolving to obtain a solution B; and adding the B into the A, uniformly stirring, heating in an oil bath, reacting under magnetic stirring, cooling to room temperature, filtering, washing and drying the product to obtain white powder, calcining in a tubular furnace to obtain three-dimensional flower-shaped Bi2O3, putting in the tubular furnace, introducing argon, introducing ammonia gas, heating, and carrying out heat preservation reaction to obtain the electrocatalyst. The catalyst can be used for catalyzing nitrogen reduction synthesis ammonia reaction.

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 relates to the technical field of beneficiation of high-calcium low-grade magnesite, in particular to a flotation decalcification agent for high-calcium magnesite and a using method of the flotation decalcification agent. Aiming at the problems that magnesite and calcareous minerals are easy to inhibit synchronously during flotation and a traditional reagent is large in dosage and high in cost, the invention provides a novel flotation reagent which can inhibit the floatability of the calcareous minerals. The flotation reagent comprises an inhibitor, a collecting agent and a foaming agent, the inhibitor is methylglycine diacetic acid (MGDA) or trisodium methylglycine diacetate (MGDA-3Na), the collecting agent is sodium oleate, and the foaming agent is 2 # oil; 30 mg-300 mg of an inhibitor, 30 mg-180 mg of a collecting agent and 2 mg-7 mg of a foaming agent are correspondingly added into every 1 L of magnesite pulp; the low-calcium magnesite concentrate obtained by flotation comprises the following main components in percentage by mass: 46.0-48.5% of MgO, less than or equal to 0.4% of SiO2 and less than or equal to 0.8% of CaO; the recovery rate of the magnesite concentrate is 65%-90% by weight, and the recovery rate of MgO in the magnesite concentrate is 60%-80% by weight.

The invention discloses a solution-treatable linear polarization low-threshold polarization laser light source and a preparation method thereof, and the preparation method comprises the following steps: mixing cesium carbonate and oleic acid, heating to 100-130 DEG C in an inert atmosphere, carrying out heat preservation for 20-40 min, after reactants are completely dissolved, heating to 140-160 DEG C, and carrying out heat preservation for 10-30 min to obtain a precursor solution A; mixing the precursor solution A, erbium acetate, yttrium acetate, bismuth acetate, silver acetate, sodium oleate, octadecene, 4-chlorobutyric acid and oleylamine according to a set proportion, standing for a set time in an inert atmosphere, stirring and heating to 90-110 DEG C, preserving heat for 0.5-1.5 h, heating to 130-150 DEG C after reactants are completely dissolved, injecting benzoyl chloride, reacting for 1-5 minutes, cooling, and stopping reaction; carrying out solid-liquid separation on the obtained mixed solution, cleaning the quantum dots, then dispersing the quantum dots in a dispersing solvent, adding PHPS into the dispersing solvent, and carrying out ultrasonic mixing; and after the PHPS is fully hydrolyzed, coating a silicon oxide sheet with the solution to prepare a film.

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.

The utility model relates to the technical field of sodium oleate production and manufacturing, and particularly discloses a stirring device for stirring sodium oleate, which comprises a dissolving tank for placing sodium oleate, a driving motor is arranged at the upper end of the dissolving tank, and a temperature sensing device is arranged in the dissolving tank; a stirring shaft assembly is arranged below the driving motor and is electrically connected with the temperature sensing device; the stirring shaft assembly comprises a main shaft; a frame and a plurality of main stirring blades are arranged on the main shaft, and the main stirring blades are arranged in the frame; a plurality of secondary stirring blades are respectively arranged on side rods on two sides of the frame; a plurality of fins are further arranged on the outer sides of the two side rods of the frame; the main stirring blade comprises a first central shaft and a plurality of blades arranged around the circumference of the first central shaft, and each blade and a radial line passing through the central point of the first central shaft are inclined at an angle of R degrees; the secondary stirring blades and the side rods on the same side are inclined at an angle of R degrees. The stirring contact area is effectively increased, the condensation phenomenon is reduced, and the stirring uniformity and safety are improved.

The invention belongs to the technical field of mineral separation processes, and particularly relates to a novel gravity-flotation combined process tailing discarding process. According to the method, the coastal placer tailings are scrubbed, so that slime and impurities wrapping the outer layers of mineral particles can be removed, the fresh surfaces of the mineral particles are exposed, and the effect of a flotation reagent on the mineral particles is improved; sodium carbonate and water glass are used as regulators; oleic acid and sodium oleate are used as collecting agents; terpenic oil is used as a foaming agent for size mixing, and full release of the effect of a flotation reagent is facilitated; and in addition, the flotation operation mode of two-time roughing, three-time scavenging and three-time concentration and reselection are combined, so that the recovery rate of useful minerals in the coastal placer tailings is greatly increased, and the waste of resources is reduced.

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 discloses a low-temperature combined collector for flotation and desilicication of iron ore and application of the low-temperature combined collector, and belongs to the technical field of iron ore flotation. The combined collecting agent is an anion combined collecting agent and is prepared from three components, the component 1 is sodium oleate, the component 2 is sodium linoleate, the component 3 is sodium caprate, the component 1, the component 2 and the component 3 are prepared into aqueous solutions with the mass concentration being 5% respectively, the proportion of the aqueous solutions of the component 1, the component 2 and the component 3 is adjusted, the aqueous solutions of the component 1, the component 2 and the component 3 are mixed to be uniform, and the low-temperature type iron ore flotation desilicication combined collecting agent is obtained. The combined collecting agent is used for reverse flotation desilicication of refractory iron ore at the low temperature of 10-15 DEG C. According to the combined collecting agent, the defect that a traditional anion collecting agent is poor in collecting capacity under the low-temperature condition is overcome, the ore pulp temperature needed by iron ore reverse flotation desilicication is reduced (heating is not needed), the energy consumption of a dressing plant is effectively reduced, and the combined collecting agent is wide in component source, convenient to commercially obtain, low in cost and beneficial to industrial application and popularization.

The invention relates to the technical field of molecular sieves, and provides a modified ZSM-35 molecular sieve as well as a modification method and application thereof. In the modified ZSM-35 molecular sieve, the content of non-framework aluminum accounts for 11% or less of the total amount of aluminum, and a pyridine infrared characterization result shows that the amount of B acid in an eight-membered ring is 0.23-0.27 mmol / g. According to the present invention, the ZSM-35 molecular sieve is treated by using the alkali and the sodium oleate, such that the obtained modified ZSM-35 molecular sieve has characteristics of good crystallinity, high B acid content in 8-MR pore channels, and no significant increase of the non-framework aluminum content so as to effectively improve the catalytic activity of the ZSM-35 molecular sieve in the dimethyl ether carbonylation reaction.

Rapidly disintegrating tablet with a disintegration time of no more than 15 minutes for oral administration of a dry extract from the leaves of Ginkgo biloba and with a total tablet weight between 150 mg and 300 mg per 100 mg of the contained Ginkgo extract, manufactured comprehensively (a) a first process step in which the ginkgo extract is mixed with 6.94 mg to 27.78 mg binder per 100 mg of the ginkgo extract contained, with 5.56 mg to 22.22 mg disintegration accelerator per 100 mg of the ginkgo extract contained, with 1.11 mg to 4.44 mg flow regulator per 100 mg of the ginkgo extract contained, and with 0.28 mg to 1.11 mg mold release agent per 100 mg of the ginkgo extract contained, and is subsequently compacted and crushed to obtain a concentrated granulate, and (b) a second process step in which the concentrated granules obtained in step (a) are mixed with a further 22.78 mg to 91.11 mg of binder per 100 mg of the ginkgo extract contained, with a further 11.11 mg to 44.44 mg of disintegration accelerator per 100 mg of the ginkgo extract contained, with a further 0.56 mg to 2.22 mg of flow regulator per 100 mg of the ginkgo extract contained and with a further 1.67 mg to 6.67 mg of mold release agent per 100 mg of the ginkgo extract contained and pressed into tablets, wherein the total amount of excipients in step (a) is 13.89 mg to 55.56 mg per 100 mg of the ginkgo extract contained and in step (b) is 36.11 mg to 144.44 mg per 100 mg of the ginkgo extract contained and wherein the binder in step (a) and in step (b) is microcrystalline cellulose, the disintegration accelerator in step (a) and in step (b) is independently selected from croscarmellose sodium, carboxymethyl starch sodium, crospovidone or sodium starch glycolate, the flow regulator in step (a) and in step (b) is independently selected from highly dispersed silicon dioxide or precipitated silicon dioxide, and the mold release agent in step (a) and in step (b) is independently selected from magnesium stearate, stearic acid, behenic acid, sodium stearyl fumarate, glycerol dibehenate, calcium behenate or fumaric acid.

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 a preparation method of an inorganic nanofiber composite diaphragm, the diaphragm and a lithium battery, and the preparation method of the diaphragm comprises the following steps: dropwise adding a calcium chloride solution into a sodium oleate solution, stirring, cooling to room temperature, adding a sodium dihydrogen phosphate dihydrate solution, and stirring to prepare a first mixed solution; the first mixed solution is subjected to a high-pressure reaction, and hydroxyapatite nanowires are prepared; adding the sodium lignin sulfonate solution into the polyamide epichlorohydrin solution, and stirring to obtain a second mixed solution; bacterial cellulose and hydroxyapatite nanowires are dispersed in purified water, the second mixed solution is added and stirred, then vacuum filtration, drying and crosslinking are conducted, and the inorganic nanofiber composite diaphragm is prepared. The mechanical strength and tensile strength of the diaphragm are enhanced, and the thickness of the diaphragm is less than or equal to 16 microns.

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 present invention provides a flooding agent and a flooding method. The flooding agent includes an emulsifier, and the emulsifier includes sodium oleate, glucoside and betaine.

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.