146 results about "Superfine grinding" patented technology

The invention belongs to the technical field of medicine and health care, and particularly relates to a preparation method of an American ginseng root water extract rich in rare ginsenoside and application of the American ginseng root water extract in improving the immune and anti-tumor direction. The preparation method comprises the following steps: step 1, carrying out superfine grinding on American ginseng, and sieving; step 2, adding the American ginseng powder into water, and then adding compound enzyme for enzymolysis to obtain enzymatic hydrolysate; s3, after the enzymolysis is finished, heating the enzymatic hydrolysate, extracting twice, and mixing after the extraction is finished; and S4, inoculating compound lactic acid bacteria into the mixed solution, fermenting to obtain a fermentation solution, blending, and sterilizing to obtain the American ginseng afterbiogen beverage. According to the invention, a new physical-biological combined process is adopted, and crushing, enzymolysis, extraction, fermentation and blending are carried out, so that the American ginseng metagen beverage rich in rare ginsenoside is obtained, and the rare ginsenoside has a remarkable anti-tumor effect and higher activity.

The invention relates to the technical field of coal gangue resource utilization, in particular to a magnetic coal series kaolin hydrogel adsorbing material as well as a preparation method and application thereof. The preparation method of the material specifically comprises the following steps: carrying out ultrafine grinding, sieving and grading on coal gangue ore to obtain a coal series kaolinite material; further performing magnetic separation to obtain coal series kaolinite iron-rich tailings; further performing magnetizing roasting in a reducing atmosphere to obtain magnetic coal series kaolin; the preparation method comprises the following steps: compounding magnetic coal series kaolin with sodium alginate and chitosan by adopting a gel coating method, dropwise adding a calcium chloride solution for crosslinking, and freeze-drying to obtain the magnetic coal series kaolin hydrogel material. The preparation method is simple, and the obtained adsorption material has the characteristics of low cost, large adsorption capacity, high adsorption rate, high selectivity, excellent cyclic utilization performance and the like.

The invention discloses geopolymer cement based on coal gangue activation reaction as well as a preparation method and application thereof, and relates to the technical field of building materials. The invention relates to a coal gangue concrete, which is prepared from the following raw materials in percentage by mass: 50 to 70 percent of activated coal gangue powder, 5 to 15 percent of alkali activator, 10 to 30 percent of auxiliary cementing material and water, wherein the water accounts for 30 to 40 percent of the total mass of the activated coal gangue powder, the alkali activator and the auxiliary cementing material. Through a composite activation process of medium-temperature calcination decarburization and superfine grinding, the activity of silicon-aluminum components in the coal gangue is effectively excited, the reaction efficiency is remarkably improved, the mixing amount of the coal gangue reaches 50%-70%, the resource utilization rate of solid waste is greatly increased, and efficient activation and resource utilization of the coal gangue are achieved. By adopting the methyl sodium silicate and sodium silicate composite activator, the reaction rate and the product structure are regulated and controlled, and the workability and the setting and hardening behaviors of slurry are improved, so that the obtained geopolymer cement has relatively high early and later strength and excellent durability.

The invention discloses a low-temperature superfine grinding and quality maintaining process for glutinous rice flour. The process comprises the following steps: pretreatment: cleaning a glutinous rice raw material, atomizing, humidifying and tempering, and pre-cooling after wetting; environment construction: an inert gas circulation environment is constructed in a closed crushing system, the temperature of circulation gas in the system is controlled to be within a first low-temperature interval, and the oxygen concentration is controlled to be below a safety threshold value; graded crushing: feeding the treated raw materials into a crushing system, utilizing low-temperature circulating gas as a conveying medium, enabling the glutinous rice raw materials to sequentially pass through a plurality of crushing areas with gradually-decreased grinding gaps in the airflow direction to be subjected to graded crushing, and taking away heat generated by grinding by utilizing the low-temperature circulating gas; and separating fine powder. The system is high in integration level, the ultrafine glutinous rice flour is uniform and fine in particle size and controllable in broken starch rate through a low-temperature inert gas loop and graded crushing design, the gelatinization characteristic and the gel characteristic of the ultrafine glutinous rice flour are closer to those of raw materials, and the application range is wider.

The invention relates to the technical field of grain production, in particular to a wheat flour processing method which comprises the following steps: cleaning and pretreating raw materials; subacid electrolyzed water stepped conditioning and wheat wetting: subacid electrolyzed water with the effective chlorine concentration of 5-30 ppm is used for carrying out at least two stages of wheat wetting treatment on the wheat; low-temperature grinding and fine grading: lightly grinding and peeling the wetted wheat, and then grinding in a low-temperature environment of 15-25 DEG C to obtain a peel-ground material, high-precision heart-ground powder and wheat germs; performing superfine grinding on the wheat germs, namely performing superfine grinding on the wheat germs obtained in the step S3 to obtain superfine ground wheat germ powder with the particle size D90 being less than or equal to 45 microns; optimizing and recombining taste and nutrition, namely compounding the high-enrichment aleurone layer powder, the high-precision heart milling powder and the superfine grinding wheat germ powder; wherein the high-enrichment aleurone layer powder is obtained from the peel grinding material. The wheat flour obtained by the method can meet the requirements of low bacteria and mellow taste at the same time.

The invention provides a method for recovering laterite-nickel ore tailings, which comprises the following steps: (1) slurrying laterite-nickel ore tailings, and carrying out acid leaching treatment to obtain leached residues; (2) mixing the leaching residues with a reducing agent, and carrying out reduction desulfurization treatment to obtain reducing residues; (3) carrying out superfine grinding treatment on the reducing slag, and carrying out first magnetic separation treatment to obtain a first magnetic separation material; (4) the first magnetic separation material and a dispersing agent are mixed for second magnetic separation treatment, and a second magnetic separation material is obtained; and (5) carrying out alkali washing purification treatment on the second magnetic separation material, and drying to obtain sponge iron. According to the method, the problems of excessive accumulation, paid landfill and difficulty in recycling of the laterite-nickel ore tailings are solved, the laterite-nickel ore hydrometallurgy tailings are prepared into the sponge iron, and the magnetic separation tailings obtained in the recovery process can be used for producing building materials, cement and other additional products.

The invention belongs to the field of preparation of Pickering emulsions, and particularly relates to a method for preparing a Pickering emulsifier from peanut protein. The preparation method of the emulsifier comprises the following steps: 1, preparing a peanut protein solution from peanut protein, and adjusting the pH value of the peanut protein solution to be neutral; step 2, heating the neutral peanut protein solution obtained in the step 1 at 90-100 DEG C; in order to further improve the stability of the Pickering emulsion in which the emulsifier participates in preparation, the preparation method of the emulsifier further comprises the following steps: step 3, heating, cooling to room temperature, and freeze-drying; carrying out superfine grinding on the freeze-dried peanut protein, redissolving and centrifuging to obtain soluble aggregate and insoluble aggregate; and 4, mixing the soluble aggregate and the insoluble aggregate according to a weight ratio of (0-1): 2. Wherein when the insoluble aggregate is completely used as the emulsifier to prepare the Pickering emulsion, the stability of the Pickering emulsion is optimal.

The invention discloses a superfine grinding and cooling process for producing a kaolin raw material. The superfine grinding and cooling process comprises the following steps: (1) pulping; (2) front-section wet grinding; (3) cooling: pumping the slurry A in the step (2) into a cooling tower for cooling through a slurry pump at the flow rate of 30-70m < 3 > / h to obtain slurry B with the temperature of 30-45 DEG C and the mass concentration of 35-45%; and (4) carrying out rear-section wet grinding. The superfine grinding and cooling process for producing the kaolin raw material has the beneficial effects that the particle collision requirement of superfine grinding is met, the consumption of a dispersing agent is reduced due to low temperature, the total consumption of the dispersing agent is finally reduced, the use cost of the raw material is further reduced, the service life of rear-section wet grinding equipment is prolonged, the maintenance cost is reduced, and the service life of the kaolin raw material is prolonged. And the granularity D92 of the slurry is less than 2 microns, less impurities are introduced, and the qualified rate of the product is more than 95%.

The invention discloses a dampness-clearing and soothing foot bath bag based on Mongolian medicine traditional Chinese medicine homologous red mud and a preparation process thereof, and relates to the technical field of life cultivation and health preservation products. The process comprises the following steps: selecting Mongolian medicine and traditional Chinese medicine homologous deep red mud which is below two meters underground, naturally drying in the sun, frying at 120-150 DEG C until the red mud is loose and light brown, and carrying out superfine grinding to 200 meshes; respectively preparing medicinal material powder of folium artemisiae argyi, flos carthami and fresh ginger; 80 parts by weight of red mud powder, 10 parts by weight of folium artemisiae argyi powder, 5 parts by weight of safflower powder and 5 parts by weight of ginger powder are fully stirred, mixed and subpackaged. Through the unique sun-drying-stir-frying-superfine grinding pretreatment technology, the problem that red mud is prone to caking is effectively solved, and the dissolution rate of active ingredients is greatly increased; meanwhile, by means of synergistic compatibility of the red mud mineral substances and the traditional Chinese medicinal materials, the obvious damp-clearing and soothing effects are achieved, use is convenient, and foot pollution is avoided.

The application provides a device and method for improving the quality of machine-made sand, one end of a lifting box is provided with a driving motor, the other end is provided with a stirring rod, a plurality of radial vertical cross bars are arranged on the stirring rod, a stirring barrel is further arranged on the bottom plate, the stirring barrel is coaxially arranged with the stirring rod, the stirring rod comprises a first stirring rod and a second stirring rod, a plurality of first cross bars are arranged on the outer surface, the first stirring rod is sleeved with the second stirring rod, the second stirring rod penetrates through the first stirring rod and extends downwards at the end portion, a plurality of radial vertical second cross bars are arranged on the extension section, and the driving motor drives the first stirring rod and the second stirring rod to rotate in opposite directions. The improvement of the product quality has a multi-dimensional effect, so that the improvement of the concrete fluidity and the improvement of other performances are more obvious. It is worth pointing out that the stirring mill in the application is used for improving the grain shape and grading of machine-made sand, and the product particle size is controlled in a certain range, which is obviously different from the use of the stirring mill in other fields, that is, the superfine grinding of substances.

The invention belongs to the technical field of food preparation, and particularly relates to a method for preparing salted egg yolk powder by using a differential frequency microwave curing method, and the preparation method comprises the following steps: S1, pretreating egg yolk to obtain an egg yolk liquid; s2, preparing the salted egg yolk liquid; s3, preparing egg yolk pickling liquid; s4, performing high-speed centrifugal treatment and high-frequency microwave curing on the egg yolk pickling liquid by using a centrifugal machine to obtain oiled egg yolk particles; s5, performing rotary granulation on the oiled egg yolk particles; and S6, performing low-frequency microwave drying and superfine grinding. The salted egg yolk powder which is good in flavor, sufficient in nutrition and stable and excellent in quality can be obtained and can be widely applied to the fields of leisure food seasoning, catering seasoning and the like.

The invention discloses rosa roxburghii tratt fruit powder and a high-dimensional C rosa roxburghii tratt cake prepared from the rosa roxburghii tratt fruit powder. The rosa roxburghii tratt fruit powder is prepared by the following method: S1, selecting raw materials; s2, cleaning is conducted; s3, removing thorns and kernels; s4, crushing and pulping; s5, carrying out composite enzymatic hydrolysis; s6, degassing and fine filtration; s7, performing vacuum concentration; s8, performing gradient freeze drying; and S9, performing superfine grinding. The high-dimensional C rosa roxburghii tratt fruit crisp prepared from the fruit powder not only can retain nutritional ingredients of rosa roxburghii tratt fruits, but also has a good taste, and has the health-care effects of resisting oxidation, enhancing immunity, delaying senescence and the like.

This invention provides a method for producing fine polyolefin powder in micrometer units, characterized by uniform particle shape, average particle size, and particle size distribution. [Solution] This invention relates to a method for producing polyolefin ultrafine powder and the polyolefin ultrafine powder produced thereby. Specifically, the method involves mixing and heating a polyolefin resin with a xylene mixed solvent to produce a polyolefin molten liquid, then cooling and crystallizing it, and then ultrafine grinding the crystallized reactant through a vacuum wet grinding step and a dry grinding step, in which wet grinding and drying are performed simultaneously with the solvent, thereby providing an ultrafine polyolefin powder with an average particle size of approximately 30 μm or less. A xylene mixed solvent is used as the mixed solvent for melting the polyolefin resin, and the ultrafine polyolefin powder produced thereby can be applied to general-purpose material fields such as construction, civil engineering, and chemical products, and has physical properties that are particularly advantageous for the manufacture of secondary battery electrodes.

The application is a beneficiation method for removing iron and aluminum sesquioxide from high-grade collophanite, and belongs to the technical field of mineral processing. The material obtained by crushing, superfine grinding and grading of raw ore is fed into a heavy separation operation to obtain a heavy separation concentrate and a heavy separation tailing; the heavy separation concentrate is fed into a reverse flotation magnesium removal operation buffer tank, and the heavy separation tailing is thickened, re-ground, classified, and then subjected to positive flotation desliming and positive flotation desilication, and the obtained concentrate is fed into the reverse flotation magnesium removal operation; three backwater pools are built to store positive flotation desilication backwater, reverse flotation magnesium removal backwater and heavy separation operation backwater respectively. The method mainly aims at high-grade high-sesquioxide calcareous collophanite, adopts heavy and float combined separation, divides the raw ore into a heavy separation concentrate and a heavy separation tailing through a heavy separation device, and subjects the heavy separation tailing to positive and reverse flotation to obtain a heavy tailing flotation concentrate. The separation process fully utilizes the advantages of positive and reverse flotation and heavy separation, the process flow is stable, the separation effect is good, high-quality phosphorus concentrate is realized, and low-quality phosphorus concentrate can be used.

The invention discloses a preparation method of sunflower seed protein good in taste and easy to digest, and belongs to the technical field of food processing. According to the method, sunflower protein powder extracted from sunflower seed cakes is used as a raw material and is modified through a composite process of superfine grinding and screening and enzymatic deamidation, firstly, the sunflower protein powder is subjected to superfine grinding and screening, deamidation treatment is carried out through protein glutamine enzymolysis, a solid sample is prepared through freeze-drying or spray-drying after deamidation, and the sunflower protein powder is used as a raw material. Finally, a sunflower protein product with remarkably improved suspension stability, solubility and in-vitro digestibility is obtained. And good solubility and suspension stability bring a smooth and fine taste. The method is clear in technological parameters and controllable in operation, the problems that sunflower protein is prone to aggregation and poor in functional characteristic are effectively solved, the excellent digestibility is more suitable for infants, old people, patients or people with weak digestion functions, the application range of the sunflower protein in the food industry is widened, and the method has high industrialization value.

A MATZHU is prepared by using leaves of Gramineae (Graminae) and Bambusoideae plant as raw materials, and has a stable emerald color, and has an average powder particle size of 800 to 10,000 meshes, and has a total amount of dietary fiber of ≥60%, a content of lignin of ≥20% and a content of minerals of ≥7%, and comprises at least three or more bamboo leaf characteristic components, such as orientin, isoorientin, vitexin, isovitexin, adenosine, δ-hydroxylysine and p-coumaric acid. The method for the MATZHU preparation comprises, in turn, performing blanching and color protection, drying and superfine grinding the raw materials. By utilizing the thermal stability and the light stability of the MATZHU, the MATZHU may be used as a raw food material, a functional ingredient, or a dietary supplement.

The invention belongs to the technical field of preparation processes, and particularly relates to a preparation method of a tendon-relaxing and blood-activating tablet. The invention provides a preparation method of tablets for relaxing muscles and stimulating blood circulation. The method comprises the following steps: a, carrying out superfine grinding on safflower, vinegar-processed rhizoma cyperi, scalded rhizoma cibotii and cortex periplocae into fine powder; b, adding water into calcined natural copper, decocting, adding Chinese starjasmine stem, lycopodium clavatum, herba lycopi, mistletoe and caulis spatholobi, decocting, combining decoction, filtering, standing, concentrating supernate into extract, drying, crushing and sieving to obtain dry extract powder; and c, placing the fine powder and the dry extract powder in a fluidization chamber of a fluidized bed, carrying out top spraying of an adhesive solution, carrying out fluidized bed granulation, drying, and tabletting to obtain the product. The tablet prepared by the method is regular in shape, tidy in edge and free of unfilled corners and tablet cracking phenomena. The tablet is smooth in surface, free of granular sensation and roughness, uniform in color and free of color spots. The tablet has the advantages of moderate hardness, toughness, no loosening phenomenon, compact overall structure, no damage, no stripping, no crack and no scratch, and friability, disintegration time limit and content result all accord with regulations.

The invention discloses a preparation method of a synthetic leather foaming layer with high bio-based content, which comprises the following steps: firstly, by taking biomass mushroom sporocarp as a raw material, implementing room-temperature superfine grinding and surface activation of the biomass mushroom sporocarp through wet mechanochemical surface modification to prepare uniformly dispersed mushroom sporocarp dispersion liquid; then mixing with bio-based waterborne polyurethane with antibacterial and mildew-proof effects, obtaining bio-based foaming layer slurry through a high-speed stirring process, and drying and curing to obtain the light and high-elastic bio-based synthetic leather foaming layer. The bio-based synthetic leather foaming layer disclosed by the invention has high bio-based content (greater than 40wt%), the bio-based synthetic leather foaming layer is prepared by taking the biomass mushroom sporocarp and the bio-based waterborne polyurethane as raw materials, the preparation process is green and environment-friendly, the process is simple, and the bio-based synthetic leather foaming layer is prepared by introducing the bio-based antibacterial and mildew-proof monomer and the hydrophobic monomer into the waterborne polyurethane. The problems that the material is poor in water resistance and is easily attacked by microorganisms due to the mushroom sporocarp are solved.

The invention discloses a preparation method of a foam concrete composite admixture, and relates to the technical field of foam concrete, and the specific preparation method comprises the following steps: adding an admixture, a superfine composite mineral admixture and desulfurized gypsum into a basic raw material according to a certain proportion; foams are prefabricated through a compressed air method and prepared through an air compressor; fully stirring the prefabricated foam and the mixed slurry through a mortar stirrer to prepare foam concrete; the prepared foam concrete is subjected to a drilling and grinding resistance test. Through the arrangement of the superfine mineral admixture, mineral crystal lattices can generate dislocation, bond fracture and recrystallization after superfine grinding, and a water-soluble amorphous structure is formed on the surface, so that water molecules enter the mineral admixture more easily, the hydration reaction is accelerated, and the activity index of the contained mineral is greatly improved; and the superfine composite mineral admixture suitable for producing cement can be prepared by adding a scientific formula, so that the porosity of the cement is reduced, and the density of the cement is improved.

The invention discloses a high-copper-sulfur low-zinc mineral processing technology with non-uniform disseminated particle size, which comprises the following steps: firstly, coarsely grinding ores until the ores with the particle size of-0.074 mm account for 62-63%, carrying out copper-sulfur bulk flotation, and preferentially recovering high-grade copper concentrate 1 (the copper content is more than or equal to 19.32%) and sulfur concentrate (the sulfur content is more than or equal to 46.78%); then copper-zinc bulk flotation is carried out on the copper-sulfur tailings, after obtained rough concentrate is classified through a hydrocyclone, settled sand and dense underflow are combined and ground till-0.074 mm accounts for 78%-80%, and copper concentrate 2 (the copper content is larger than or equal to 20.12%) and zinc concentrate 1 (the zinc content is larger than or equal to 45.87%) are obtained through copper-zinc separation, copper concentration and zinc concentration; and finally, the mixed tailings are graded, fine fraction is directly separated and recycled through a flotation column, coarse fraction is subjected to superfine grinding till-0.044 mm accounts for 90%-93%, then a flotation machine is adopted for re-separation, finally, the copper content of the tailings is reduced to 0.075%-0.083%, the zinc content of the tailings is reduced to 0.082%-0.088%, and efficient separation with the copper recovery rate being 93.78%-94.62% and the zinc recovery rate being 60.21%-62.37% is achieved.

The application relates to the technical field of lithium ion batteries, in particular to a preparation method of lithium iron phosphate. The preparation method of the lithium iron phosphate comprises the following steps: reacting a mixed solution containing ferrous phosphate and ferrous biphosphate, and performing first grinding to obtain slurry; and sequentially performing second grinding, spray drying, calcination and crushing on a mixture of the slurry, a lithium source, a carbon source and a dopant to obtain the lithium iron phosphate. The two ferrous salts of the ferrous phosphate and the ferrous biphosphate are adopted, and superfine grinding can be realized under the dual action of physical grinding and chemical reaction; the generation of strong reducing gas is avoided, and the content of magnetic substances in the product is reduced. The lithium iron phosphate prepared by adopting the preparation method has the characteristics of small primary particle size, high rate performance, low powder resistivity and excellent low-temperature performance.

The utility model relates to the technical field of ultra-fine processing of sesame paste, peanut paste and sesame and peanut mixed paste at low temperature, and particularly discloses low-temperature cold processing ultra-fine grinding equipment which comprises two lower I-shaped long beams and a cooling water tank, an upper I-shaped long beam is connected to the tops of the two lower I-shaped long beams, and the cooling water tank is connected to the top of the upper I-shaped long beam. And the two lower I-shaped long beams and the two upper I-shaped long beams are connected with each other. Water in the cooling water tank enters the cylindrical hollow water circulator through the water pumping pipe, the circulating water pump and the water inlet pipe, and when the liquid level of the cooling water in the cylindrical hollow water circulator is close to the top of the cylindrical hollow water circulator, the cooling water overflows through the built-in water pipe, then enters the water outlet pipe through the cooling water outlet and finally flows into the cooling water tank. Heat generated in the grinding process is taken away through circulation of cooling water, so that the upper grinding disc and the lower grinding disc are in a low-temperature state all the time, it is ensured that the whole machining process is in the low-temperature state all the time, and the taste of products is greatly improved due to the low temperature.

The application discloses a method for extracting and enriching noble metals from noble metal-containing ores, which comprises the following steps: grinding some noble metal-containing ores with superfine particles by a common ball mill, adding chemicals and roasting, grinding again by a superfine grinding machine, oxidizing leaching, vacuum filtering, noble liquid reduction, roasting of the reduction product, fine grinding and the like, so that all noble metal elements can be extracted and enriched at one time. The whole production process is scientific and reasonable, and adopts a closed loop type of feeding, vacuum dust removal, tail gas recovery treatment and recycling of treated waste water. No waste gas is discharged, no waste water is discharged, and the method meets the environmental protection requirements. The method solves the problem of extracting noble metals from noble metal-containing ores with superfine particles.

The invention relates to the technical field of inorganic non-metallic material superfine grinding, in particular to a method and equipment for efficiently preparing an inorganic non-metallic material product larger than 1600 meshes through a dry method.The equipment comprises a superfine classifier, a device rack, a driving motor and a control box, and a ball milling barrel is rotationally installed on the device rack; rotating shafts are fixedly installed at the two ends of the ball milling barrel, a negative pressure suction and conveying mechanism is installed at a right side end opening of the device rack, the output end of the negative pressure suction and conveying mechanism is connected with a discharging end opening, and the discharging end opening is connected with the input end of the superfine classifier; through a collaborative process system of three-stage progressive grinding, gradient screening, precise sorting of an ultrafine classifier and closed-loop backflow regrinding, and in combination with optimal configuration of a grinding medium and a filling rate, the problem of non-uniform granularity of a traditional grinding product is solved, and it is ensured that a final product stably reaches 1600 meshes or above, and the granularity is uniform.

The invention relates to a preparation method of Fuganning tablets. The preparation method comprises the steps of raw material pretreatment, gradient extraction, composite purification, granulation, drying and granule finishing, tabletting and coating. The wall breaking rate of medicinal materials is increased by adopting low-temperature superfine grinding, the yield of effective components is increased by adopting a gradient extraction process combining microwave-ultrasonic synergistic extraction and constant-temperature reflux, impurities are reduced by virtue of acid precipitation-macroporous resin composite purification, and the disintegration performance and stability of the tablet are optimized in cooperation with fluidized bed granulation and functional coating technologies. The method can improve the purity and bioavailability of active ingredients, enhance the stability of the preparation and realize accurate quality control, and is suitable for industrial production of the Fuganning tablets.

The invention discloses a treatment method of vanadium titano-magnetite dry-discarded tailings. The method comprises the following steps: crushing and screening dry-thrown tailings to obtain undersize wet-thrown raw materials, carrying out wet-type tailing discarding on the undersize wet-thrown raw materials by utilizing tailing discarding equipment to obtain wet-thrown concentrates, and crushing and screening the wet-thrown concentrates to obtain undersize ground raw materials; after the undersize grinding raw materials are subjected to circulating coarse grinding, a first magnetic separator is used for iron separation, and first magnetic concentrate is obtained; after the first magnetic concentrate is subjected to circulating fine grinding, a second magnetic separator is used for iron separation, and second magnetic concentrate is obtained; and after the second magnetic concentrate is subjected to circulating superfine grinding, iron separation is conducted through a third magnetic separator, and third magnetic concentrate is obtained. According to the scheme provided by the invention, the iron ore concentrate, the secondary iron ore concentrate, the titanium concentrate and the titanium middling product are further recycled from the materials originally used for the waste, and the comprehensive utilization rate of iron and titanium in the vanadium titano-magnetite ore dressing waste resources is increased.

The invention belongs to the technical field of mineral materials, and particularly relates to graphite lubricating liquid for a sliding plate brick and a preparation method of the graphite lubricating liquid. The preparation method comprises the steps that high-purity graphite is collected and subjected to superfine grinding to serve as a raw material for preparing the graphite lubricating liquid; putting the collected raw materials into a high-speed stirrer, adding water, and stirring to obtain slurry; adding an adjusting agent into the obtained slurry, and stirring to adjust the pH value; and respectively adding a film-forming agent, a defoaming agent and an anti-settling agent into the slurry with the adjusted pH value, grinding by using a sand mill, and standing for more than 24 hours to obtain the graphite lubricating liquid. The graphite lubricating liquid for the sliding plate brick prepared by the method has the characteristics of high temperature resistance, corrosion resistance, good dispersity and good lubricity, the film-forming agent and the anti-settling agent are added in the preparation process, the wettability of the graphite lubricating liquid and a sliding plate can be enhanced, meanwhile, the storage time can be prolonged, a sand mill is adopted for grinding in the preparation process, and the service life of the sliding plate brick is prolonged. The dispersity and the stability of the lubricating liquid can be improved.

The application discloses a fuel cell catalyst slurry dispersing device and method, and belongs to the technical field of fuel cells. A three-stage synergic system of top high-speed shearing pre-dispersion, bottom homogeneous ultrafine grinding and intermediate forced internal circulation is adopted to eliminate the dead zone in the tank and ensure uniform particle size. Meanwhile, flexible wall scraping pieces installed at the end of the anchor stirring paddle can closely adhere to the tank wall for dynamic scraping, so that wall hanging and residue of high-viscosity slurry are avoided. In addition, the multi-layer anti-blocking filter screen arranged in the whole process and the flow-aiding discharge design of the bottom homogeneous cutter head ensure smooth discharge of the material, so that the problems of uneven dispersion and poor discharge rate are solved. Through the innovative multi-stage dispersion and dynamic anti-sticking integrated design, the problems of the existing equipment are effectively solved.

The invention belongs to the technical field of health care products or medicines, and discloses a high-purity alkaline compound vitamin C composition, and a liposome soft capsule and a preparation method thereof. The invention firstly provides a composition composed of sodium ascorbate, sodium erythorbate and the like, and the sodium erythorbate and trisodium citrate are utilized to synergistically construct a chemical dual-stability barrier. On the basis, the composition is further encapsulated through a low-temperature oxygen-free liposome preparation process to form a physical protection barrier capable of improving bioavailability, and the composition is prepared into a soft capsule dosage form. According to the preparation method disclosed by the invention, low-temperature and inert gas protection measures run through all the time, and the preparation method not only comprises superfine grinding and mixing of the core composition, but also comprises low-temperature and high-pressure homogenization and subsequent filling processes of the lipidosome. The final product is alkalescent and good in stability, and the absorption rate of active ingredients is remarkably improved through a liposome delivery system.

The invention discloses a tire cracking carbon residue regeneration adsorbent preparation device and method, and relates to the technical field of waste tire resource utilization. The device comprises a cracking furnace structure, a rotatable inner furnace is arranged in the cracking furnace structure, a combustion chamber is arranged below the inner furnace and used for heating and cracking tire materials, and a deslagging and exhausting mechanism is arranged on the rear side of the cracking furnace. The deslagging and exhausting mechanism comprises a fixed cylinder communicated with the inner furnace, a rotary cylinder for conveying carbon residues and a spiral blade, and a gas inlet hole and a gas outlet hole are formed in the rotary cylinder, so that cracking gas is synchronously guided out in the deslagging process and is conveyed to gas treatment equipment through a gas collecting pipe, and deslagging and exhausting are synchronously carried out in a sealed state. An anti-overload driving mechanism is arranged on one side of the cracking furnace, overload protection is achieved through a disconnectable transmission structure when the rotation resistance of the inner furnace is increased abnormally, and a driving system is prevented from being damaged. The method comprises the following steps: cracking, crushing to remove iron, removing zinc salt, removing silicon, carrying out superfine grinding, granulating, drying and the like.