164results about How to "Moderate granularity" patented technology

The present invention discloses a method for smelting rust preventing and wear resistant alloy on the surface of a steel rail. The position needing alloy smelting on the surface of the steel rail head is heated by supersonic frequency or medium frequency induction-heating equipment, the induction heater is arranged above the position needing alloy smelting on the surface of the steel rail head, and the preheating temperature is 290-450 DEG C; the alloy is smelted on the surface of the steel rail head by using plasma smelting or arc welding smelting, when the preheating temperature is 290-450 DEG C, and the welding gun of plasma build up welding or arc welding equipment is moved to the position needing alloy smelting, the alloy powder, the alloy electrode or the alloy welding wire are automatically smelted; the railroad steel rail adopting the present invention can ensure that the train wheels and the rust preventing and wear resistant alloy layer are always in a contacting and compacting state, thereby the rail circuit works normally, and the white light zone phenomenon is completely eliminated; the cracking and breaking phenomena of the steel rail do not occur, the smelted alloy has good rust preventing and wear resistant properties, high bonding strength with the steel rail, and long service life.

The invention relates to the field of software structure design and application, in particular to a new generation T / C / V software structure suitable for cloud computing cloud service and a cloud computing method thereof. The T / C / V software structure comprises a terminal application layer, a cloud computing layer and a virtual equipment layer. By adopting the T / C / V software structure, good support of the virtual equipment layer is provided for the cloud computing cloud service, shared resources of the cloud computing cloud service are virtualized, the function of the cloud computing layer and the data of the virtual equipment layer are completely separated, and cloud service is provided for a user as required.

The invention discloses a method for preparing phycocyanin from fresh spirulina. The process design is based on convenience, high efficiency and capability of facilitating comprehensive utilization of different components, the fresh spirulina is used as a processing raw material, and the spirulina phycocyanin is prepared through steps of low-temperature wall breakage, ammonium sulfate fractional salting-out, polyethylene glycol 2000 / (NH4)2SO4 two-aqueous-phase extraction, ultrafiltration and vacuum freezing drying. With the adoption of the method, the yield of the spirulina phycocyanin is higher, the obtained spirulina phycocyanin is low in polysaccharide content, the purity A620 / A280 is about 3.7, the method is applicable to preparation of the phycocyanin from other algae used as raw materials, the biological activity of all components of the spirulina can be well kept during preparation, other obtained separated parts can be further processed, a series of products such as active polysaccharides, chlorophyll, algal protein and the like can be obtained, and the method has the high promotional value and the broad application prospect.

The invention belongs to the technical field of battery materials, and discloses a preparation method of an aluminum oxide coated lithium nickel manganese cobalt cathode material. The method comprises the steps of raw material mixing, primary sintering, doping, secondary sintering, coating and size stabilization treatment, wherein the step of raw material mixing comprises the steps that a three-dimensional efficient titled mixer is adopted, polyurethane balls serve as a mixing medium, dispersing, even mixing and smashing are conducted on lithium carbonate, a nanometer spherical nickel cobalt manganese hydroxide precursor and polyethylene glycol, and a uniform intermediate mixture is formed. The preparation method of the aluminum oxide coated lithium nickel manganese cobalt cathode material is low in primary sintering temperature, short in sintering time, simple in technology, large in specific capacity and good in cycling performance. The preparation method further has the advantages of being low in investment, reliable in technology, low in operating cost and the like, and the good economic benefit and market promotion value are achieved.

The invention discloses anti-seepage heat insulating rice husk concrete and a preparation method thereof, and the prepared anti-seepage heat insulating rice husk concrete comprises the following raw materials in percentage by mass: 0.6 to 4 percent of rice husk or rice husk powder, 2 to 6 percent of fly ash, 15 to 33 percent of cement, 14 to 27 percent of sand, 26 to 48 percent of stone, 0.15 to 1.2 percent of rice husk coupling agent, 0.11 to 0.29 percent of water reducing agent and the balance of water, and the total mass percentage of the raw materials is 100 percent. The anti-seepage heat insulating rice husk concrete is mainly applied to a concrete lining cannel in a northern irrigation district to prevent frost damage, and tests show the performance of the concrete meets the index requirements of 'Technical Code of Channel Anti-seepage Engineering' on the lining concrete, particularly the heat transfer coefficient of the concrete added with rice husk is only 14 to 20 percent of that of common concrete, and the anti-seepage grade can reach above W4 (the permeability coefficient is less than 0.783*10-8cm / s). Simultaneously, the anti-seepage heat insulating rice husk concrete is applied to non-load-bearing structures or hollow blocks and wall materials in building engineering, is an inexpensive heat insulating material. In addition, the invention opens up a new way for the use of rice husk, and can reduce the harm of combustion to the environment.

The invention discloses a preparing method for a vortioxetine hydrobromide alpha crystal form. The preparing method comprises the following step that sec-butyl alcohol is removed from a vortioxetine hydrobromide-sec-butyl alcohol complex to obtain the vortioxetine hydrobromide alpha crystal form. The method is low in desolvation temperature, and the prepared vortioxetine hydrobromide alpha crystal form is high in purity, suitable in particle size and suitable for industrial production.

The invention discloses a method for continuously compounding high-purity alkali nickel carbonate. The method comprises the steps as follows: a nickeliferous stock solution, ammonium salt and a precipitant Na2CO3 are continuously conveyed to a multifunctional reactor for carrying out continuous compounding reaction, and resultant slurry is continuously discharged from a material outlet; during the continuous compounding reaction, the reaction temperature is controlled within 50-80 DEG C with a real-time monitoring system, the reaction pH value is controlled within 7.5-8.5, and the average residence time of a reaction system in the multifunctional reactor is controlled within 20 h-30 h; and a reaction discharging is filtered, filter residue is aged, and then the reaction discharging enters into a multi-level washing tower to be washed, when the flow conductance value of the multi-level washing tower bottom is less than 600 ms / cm, a washed product is filtered and dried to obtain the high-purity alkali nickelous carbonate. The invention has the advantages of simple process, low equipment investment, environment protection, complete product structure, good quality and the like.

The invention belongs to the technical field of mineral machining and particularly relates to a novel method for producing iron concentrates through complex refractory iron ore. The novel method includes the steps that firstly, the complex refractory iron ore is subjected to ore grinding classifying treatment; classified overflow products are subjected to magnetic separation preconcentration, and powdery preconcentrated concentrates are obtained; the powdery preconcentrated concentrates are fed into a suspension roaster to obtain suspension roasted ore; water is added to the suspension roasted ore, and ore pulp is manufactured, preconcentration is conducted, and obtained magnetic concentrates serve as rough concentrates; and an electromagnetic separator is used for conducting concentration on the rough concentrates, the obtained concentrated concentrates are filtered, moisture is removed, concentrate products with the iron grade ranging from 60% to 68% are obtained, the recovery rate of iron ranges from 80%-90%, the concentrate products with the iron grade ranging from 60%-68% are subjected to reverse floatation desilicication, and concentrate products with the iron grade ranging from 61% to 69% are further obtained. The iron concentrate products with the iron grade larger than 60% are obtained, the recovery rate of iron is larger than 80%, product indexes are stable, the economical efficiency is good, and complex refractory iron ore resources can be efficiently utilized.

The invention relates to a method for preparing high purity phycoerythrin, phycocyanin and allophycocyanin from the algae, belonging to the bioengineering extraction separation technology. The method is as follows: red algae or cyanobacteria is adopted as a raw material, and phosphate buffer is used as an extractant; after algae cells are broken, the raw material of the red algae or the cyanobacteria is salt dissolved, salted out and dialyzed in grade by ammonium sulfate, and crude extract of phycobiliprotein is obtained; the crude extract is in chromatography by a hydroxyapatite column for one time, is gradient eluted by the phosphate buffer, and is frozen and dried, and high purity phycoerythrin, phycocyanin and allophycocyanin are obtained. The purity of the crude extract of the phycobiliprotein prepared by the effective method in the earlier stage reaches the standard of pharmaceutical grade (A620 / A 280 is more than 2.0), thereby simplifying the follow-up purifying procedures, so the high purity phycoerythrin, phycocyanin and allophycocyanin can be respectively obtained by only one time column chromatography. When the method is used to extract high purity phycobiliprotein from the fresh algae and the dry algae, the process is simple, the production cost is low, and the yield of the products is high. Thus, the method is suitable for mass production.

The invention relates to a tobacco floating seedling substrate and a preparation method thereof. The substrate contains 40-50% of turf, 10-20% of carbonized corn stalk granule, 10-20% of expanded perlite and 10-20% of vermiculite. The preparation method comprises the following steps of: crushing sun-dried corn stalks into rough granules; placing the rough granules in a carbonization furnace for high-temperature carbonization; crushing and screening after cooling; uniformly mixing with the turf, the expanded perlite and the vermiculite according to the raw material proportion; and carrying out sterilization. The corn stalks selected in the invention have the advantages of rich sources, low cost, various available nutrients and stable physical and chemical properties; by using the corn stalks to replace partial turf, the prepared substrate is loose, air-permeable, stable in structure, good in air permeability and water holding capacity, proper in pH value and large in cation exchange capacity, and has the effects of effectively ensuring the quality of floating seedling, bringing benefit to the sustainable development of the floating seedling substrate production, greatly reducing the seedling cost, solving the problem of insufficient sterilization, avoiding disease generation and having wide application prospect in tobacco floating seedling production.

The invention provides a resource utilization method for the combined production of a biogas and a cultivation matrix through utilizing tobacco stalk fermentation. The method comprises the following steps: carrying out anaerobic fermentation of a main fermentation raw material which is waste tobacco stalks generated in the tobacco threshing redrying line to produce the biogas; carrying out solid-liquid separation of a biogas slurry and the tobacco stalks to obtain a tobacco stalk biogas residue and a biogas slurry; purifying the biogas to prepare clean fuels or to be used for electricity generation to provide partial energy for a plant area; and decomposing the tobacco stalk biogas residue, and carrying out dry molding to prepare the cultivation matrix, wherein the biogas slurry returns to a fermentation system to be recycled or to be used as a liquid organic fertilizer. The method provided by the invention has the advantages of simple production operation, concentrated and stable raw material, scale production benefiting, low production cost, realization of no pollution, zero discharge and cycle utilization of waste tobacco stalk resources of a threshing redrying plant, and generation of good economic, ecological and social benefits.

The invention relates to the technical field of hydrogen storage equipment, and particularly discloses a solid-state hydrogen storage device with high heat exchange characteristics. The solid-state hydrogen storage device comprises an outer tank, wherein an air inlet and outlet valve is arranged at the top of the outer tank, a plurality of hydrogen storage cylinders are fixed in the outer tank insequence, a gap of 0.5mm-3mm is formed between every two adjacent hydrogen storage cylinders, filter sheets are fixed at two ends of the hydrogen storage cylinders correspondingly, a plurality of heat-conducting partition plates are arranged in the hydrogen storage cylinders along the axial direction of the hydrogen storage cylinders, the plurality of heat-conducting partition plates divide the hydrogen storage cylinders into a plurality of hydrogen storage spaces, and the hydrogen storage spaces are filled with hydrogen storage materials. According to the solid-state hydrogen storage device,the multi-layer storage spaces are adopted, so that more rapid hydrogen absorption can be realized, and the problem of structural damage caused by uneven distribution of the hydrogen storage materialsin a hydrogen storage tank and stress concentration in the prior art is effectively solved; and in addition, the uniform distribution of the hydrogen storage materials enables the distribution of heat generated in a hydrogen absorption process to be more uniform, and the heat can be more rapidly conducted out of the hydrogen storage device.

The invention discloses a network safety state evaluation and attack prediction method, which comprises the following steps of: 1) selecting representative IDS alarms from alarms generated by an intrusion detection system IDS in a set observation period, and taking each selected representative IDS alarm as an attack step; arranging the representative IDS alarms belonging to the same class of attacks according to a time sequence to obtain an attack step sequence of the class of attacks; 2) respectively extracting an attack event from the attack step sequence of each type of attack; 3) generating a training sequence to train a Markov model (HMM) by utilizing attack events extracted from the attack step sequence of the mth attack, and storing each trained HMM and a corresponding training sequence S; and 4) for an observation sequence, matching the observation sequence with the training sequence S corresponding to each HMM, selecting the most matched HMM, inputting the observation sequenceinto the most matched HMM, and evaluating the network safety state corresponding to the observation sequence.

The invention discloses a preparation method of an oxide-cladding lithium ion battery positive material. The preparation method comprises the following steps: mixing manganese salt and nickel salt materials, preparing a nickel-manganese precursor by virtue of a sol-gel method, mixing the nickel-manganese precursor with lithium salt by adopting a three-dimensional oblique mixer, pre-sintering, sintering at high temperature, cladding in a wet method by selecting metal-containing oxide, sintering at low temperature, crushing by virtue of air flow, and grading to obtain a lithium nickel manganese oxide finished product. By adopting metal oxide and cladding the lithium nickel manganese oxide material by virtue of a special wet-method cladding process, the cycling performance and high-temperature performance of the lithium nickel manganese oxide can be improved.

The invention discloses a preparation method for monodisperse plate-like gold powder, namely the preparation method for micron-grade monodisperse plate-like gold powder containing part of near-spherical particles, and belongs to the field of electronic paste of new materials with an informational function. The method can be used for preparing the micron-grade monodisperse plate-like gold powder containing a small part of the near-spherical particles. The size of the near-spherical particles of the gold powder is about 0.5-0.8 [mu]m, the plate-like gold powder is in the shape of an irregular polygon, the plate diameter is 4-6 [mu]m, and the plate thickness is 300 nm. The gold powder is good in dispersity, moderate in particle size and particle size distribution, good in sintering property and capable of being used for preparing various kinds of gold-based electronic paste and pigment.

The invention relates to a process for removing impurities from bauxite, in particular to an ore grinding flotation silicon-removing method of bauxite, which comprises the steps of: carrying out primary floatation on the bauxite after rough grinding, wherein the floated foam is used as a concentrate product; carrying out secondary ore grinding on floating underflow; and carrying out secondary floatation after secondary ore grinding, wherein the floated foam is used as a concentrate product and the underflow is used as tailings to be discharged. The invention has the characteristics of proper granularity of flotation pulp, reasonable fraction distribution, shortened process flow, reduced mineral dressing cost and improved floatation recycling rate due to the adoption of reasonable configuration of ore grinding and floating and equipment selection.

The invention discloses face washing salt sand and a preparation method thereof, and aims to overcome the defects that the conventional salt is mainly used for eating and has single function. The face washing salt sand comprises the following components in parts by weight: 80 to 90 parts of sea salt wrapped with Chinese medicinal extract, 10 to 15 parts of Chinese yam powder, 1 to 1.5 parts of bletilla powder, 1 to 3 parts of pearl powder, 0.2 to 0.5 part of aloe powder, 0.1 to 0.2 part of jojoba oil, and 0.1 to 0.3 part of glycerol. The face washing salt sand has the effects of cleaning, nutrition, skin protection and the like, and can be used for diminishing inflammation, removing acne, removing blackhead, reducing pores, clearing the pores, removing keratin, fading trails left by the acne and moisturizing, whitening and smoothing the skin; and the application range of the salt is widened, and the function of the salt is enriched.

The invention belongs to the technical field of a pet article, and particularly relates to special shower gel for a pet. The material is prepared from the following ingredients in parts by weight: a phase A (90 to 100 parts of deionized water, 1.0 to 3.0 parts of acrylic ester, 16.0 to 20.0 parts of sodium laureth sulfate, 1.0 to 2.0 parts of glycol distearate and 0.6 to 1.0 part of cocamidopropylMEA), a phase B (0.15 to 0.23 part of polyquarterniuml salt-10, 0.1 to 0.3 part of guar gum hydroxypropyl trimethyl ammonium chloride, 0.4 to 0.7 part of cocoyl isethionate ethoxy methyl ammonium methylsulfate, 4.0 to 7.0 parts of cocamidopropyl betaine, 0.7 to 2.0 part of olive oil PEG-7 ester and 1.0 to 2.0 parts of sodium chloride), a phase C (1.0 to 3.0 parts of dimethyl silicone polymer, 1.0to 3.0 parts of dimethiconol, 0.3 to 1.0 part of amodimethicone, 4.0 to 6.5 parts of mink oil, 0.2 to 0.4 part of DMDM hydantoin, 0.5 to 0.7 part of triclosan, 2.0 to 3.0 parts of trolamine (99%) and0.15 to 0.3 part of essence). The shower gel for the pet has the functions of moisturizing, restoration, puffing, smoothening, sun-proof effects, moisture preservation, sterilization, desinsectization and long-effect fragrance leaving.

The invention provides a method for improving Seebeck coefficient of a carbon fiber cement-based composite material. According to the method, Fe2O3 and / or Bi2O3 powders are added during preparing the carbon fiber cement-based composite material; a linear relation is generated between the thermoelectromotive force and the temperature difference of the carbon fiber cement-based composite material, and the Seebeck coefficient of the carbon fiber cement-based composite material is increased along with the increasing of the quantity of added Fe2O3 and / or Bi2O3 powders, so that the obtained carbon fiber cement-based composite material is high in Seebeck coefficient, stable in thermoelectric property, high in mechanical property, and simple in preparation technology, and avoids the problem that the Seebeck coefficient of the composite material is unstable due to the application of lightweight aggregate, steel slag or crystalline flake graphite; the carbon fiber is free from the technical processing of bromine intercalation, so that the problem due to environmental pollution caused by bromine vapor can be avoided, and the problem that the mechanical property of the cement-based composite material is reduced due to adoption of the lightweight aggregate, the steel slag or the intercalation crystalline flake graphite also can be avoided; and the cement-based composite material can be uniformly dispersed in a cement matrix.

The invention relates to the aspect of aquaculture, in particular to a formula and production process of an environment-friendly and pollution-free grass carp feed. The formula includes a component A, a component B and a component C. According to the mass parts, 1-40 parts of bean pulp, 1-30 parts of peanut meal, 5-15 parts of wheat meal, 5-15 parts of corn flour and 5-10 parts of fish oil are evenly mixed to form the component A, 15-30 parts of a fermented feed, 10-25 parts of clostridium alcohol protein, 10-30 parts of chicken meal, 5-10 parts of earthworm powder, 1-5 parts of a liver and bile protecting additive and 1-5 parts of a decavitamin additive are evenly mixed to form the component B, and 20-30 kg of pulverized corn straw is put into 100 kg of starch water to be heated until viscosity is realized to form the component C. The raw material ratio in the process conforms to the feeding habit characteristic of grass carps, the production process is environmentally friendly and free of pollution, and the prepared fish feed cannot contaminate water.

The invention belongs to the technical field of battery materials and discloses a preparing method for a spherical LiMn1-x-yNixCoyO2 anode material. The method comprises the steps of raw material mixing, primary sintering, doping, secondary sintering and whole particle treating. A three-dimensional efficient oblique mixing machine is adopted for raw material mixing, a polyurethane sphere is adopted as a mixed material medium, and lithium carbonate, a nanometer spherical Ni-Co-Mn hydroxide precursor and polyvinyl alcohol are dispersed, mixed uniformly and smashed to form a uniform intermediate mixture. According to the preparing method for the spherical LiMn1-x-yNixCoyO2 anode material, the temperature for primary sintering is low, sintering time is short, the process is simple, the specific capacity is high, and cycling performance is good. The preparing method has the advantages of being small in investment, reliable in technology, low in operation expense and the like, and has good economic benefits and market popularization value.

The invention discloses a needle mushroom culture material. The needle mushroom culture material comprises large-scale methane residues serving as main raw materials and also comprises one or more of sawdust, corncobs or cottonseed hulls, and bran and gypsum. The culture material is used for cultivating the needle mushroom, so that the cost of the raw materials produced in a needle mushroom plant is reduced, the production cycle is shortened, energy consumption is reduced, the residues, namely methane residues, generated by large-scale fermentation of the methane can be recycled, and the circulation chain of biomass energy is lengthened.

The invention belongs to the technical field of a battery material, and discloses a preparation method for a zinc oxide-coated lithium nickel manganese cobalt positive electrode material. The preparation method comprises the steps of mixing raw materials, primary sintering, doping, secondary sintering, coating, and performing granulation, wherein the step of mixing raw materials is carried out by the steps of adopting a three-dimensional efficient inclined type mixer, taking zirconium balls as the material-mixing medium, and performing dispersion, uniform mixing and smashing on lithium carbonate, a nanosphere-shaped nickel manganese cobalt hydroxide precursor and polyethylene glycol to form uniform intermediate mixture. The preparation method for the zinc oxide-coated lithium nickel manganese cobalt positive electrode material is low in primary sintering temperature, short in sintering time, simple in process, high in specific capacity, and good in cycling performance; and the preparation method also has the advantages of low investment, reliable technology, low operating cost, high economic benefits, high market popularization value and the like.

The present invention relates to an aluminum-chromium refractory material and a preparation method therefor. The aluminum-chromium refractory material comprises the following raw materials in parts by mass: 80-100 parts of alumina particles, 25-35 parts of alpha-alumina powder, 15-20 parts of nano alumina, 20-35 parts of chrome oxide, 10-20 parts of graphene, 5-10 parts of an additive, 7-12 parts of a binder and 5-12 parts of nano silicon carbide. According to the refractory material provided by the invention, the inner structure is compact, and therefore volume density is increased; apparent porosity of the refractory material is reduced, and therefore expansion is prevented, thereby further improving various physical properties of the refractory material such as strength, thermal shock resistance and heat shock stability. The aluminum-chromium refractory material provided by the present invention is simple in preparation method, rich in raw materials and applicable to industrial production.

The invention relates to a refractory material and a preparation method therefor. The refractory material consists of the following raw materials in parts by mass: 100-120 parts of aluminium oxide particles, 25-35 parts of alpha-aluminium oxide powder, 15-20 parts of nano aluminium oxide, 20-35 parts of zirconium oxide, 10-20 parts of graphene, 5-10 parts of an additive, 7-12 parts of a binding agent and 5-12 parts of nano magnesium oxide. The refractory material disclosed by the invention is internally compact; volume density of the refractory material is improved, and apparent porosity of the refractory material is reduced to prevent expansion, so that various physical performances such as strength, thermal shock resistance, and thermal impact resistance of the refractory material are further improved. The preparation method is simple and suitable for industrial production; and raw materials are rich.

The invention belongs to the technical field of soilless culture, relates to a slag type soilless culture medium and a preparation method thereof, and specifically relates to a culture medium produced by using metallurgy waste wastes-slag, and a preparation method thereof. The slag type soilless culture medium is prepared by using the following raw materials by volume: 0.2-0.4 part of slag, 1-2 parts of grass carbon, 0.6-1 part of perlite and / or 0.6-0.8 part of vermiculite. A content of SiO2 in the slag is not smaller than 15wt%; a content of Cd in the slag is not larger than 120 mg / kg; a content of Pb in the slag is not larger than 50 mg / kg; a content of Hg in the slag is not larger than 0.30 mg / kg; and a content of As is not larger than 20 mg / kg. The problems of low utilization rate of slag, and high cost and incomplete nutritional ingredients existing in a conventional culture medium are overcome; resource utilization of the slag is realized; the slag type soilless culture medium and the preparation method thereof are scientific in design and reasonable in proportions, prevent toxic and side effect of the slag, and bring about enormous social, economic and ecological benefits.

The invention relates to lactating sow premixed feed for preventing and treating postpartum inflammation and a preparation method thereof. The lactating sow premixed feed contains a nutrient additive, Chinese herbal medicine extract and a diluent. The premixed feed comprises 0.5-8% by weight of the raw medical materials and is prepared from 0.5-3 parts by weight of radix angelicae sinensis, 0.5-3 parts by weight of ligusticum wallichii, 1-4 parts by weight of herba houttuyniae and 0.5-3 parts by weight of cortex magnoliae officinalis through medicine extraction or direct crushing. The diluent is a mixture of zeolite powder and rice hull powder according to a weight ratio of 1: 1. The ingredients of the premixed feed are environmentally friendly raw materials. The used Chinese herbal medicine extract has functions of promoting blood circulation to restore menstrual flow, promoting circulation and removing dampness, clearing away heat and toxic materials, and eliminating carbuncle and expelling pus, has good treatment effects on sow postpartum hysteritis, has efficiency of 85% or more, promotes sow fast recovery, improves immunity, resists bacteria, diminishes inflammation and mainly treats postpartum diseases such as sow puerperal fever, postpartum inability to eat, hysteritis, mastitis, postpartum syndrome and lochiorrhea.

The invention discloses an estrus and pregnancy promoting premixed feed for a lactating sow. The premixed feed contains a nutritional additive, a Chinese herbal medicinal additive and a diluent, wherein the amount of raw medicinal materials contained in the Chinese herbal medicinal additive is 0.5 to 8 percent of the weight of the premixed feed; the Chinese herbal medicinal additive is prepared from the following medicinal materials in parts by weight: 0.5 to 3 parts of semen allii tuberosi, 0.5 to 3 parts of rhizoma chuanxiong, 0.5 to 3 parts of Chinese angelica, 0.5 to 3 parts of cortex eucommiae and 0.5 to 3 parts of radix astragali seu hedysari. The product can meet vitamins, trace elements, amino acid and the like required by growth and development of sows at a lactation stage; the production efficiency is improved, and the immunity is enhanced; the added Chinese herbal medicinal additive has the functions of warming and reinforcing liver and kidney, regulating menstruation and preventing miscarriage, and the like, promotes estrus of the sows, and can be widely applied to estrus of sows suitable for mating and post-parturient sows; after use, the estrus and pregnancy promoting premixed feed is quick in result; after the estrus and pregnancy promoting premixed feed is fed for one week, the estrus is started; the number of production litters of the sows every year can be increased, and the yield of piglets is increased.

The invention relates to a magnesium-calcium-carbon refractory material and a preparation method thereof. The refractory material comprises 100-120 parts of magnesia-calcia clinker particles, 40-50 parts of magnesia-calcia clinker fine powder, 15-35 parts of nano-magnesia, 20-30 parts of nano-calcia, 20-35 parts of zirconia, 10-20 parts of graphene, 5-10 parts of an additive, 7-12 parts of a binder and 5-12 parts of nano-carbon fibers. The inside of the refractory material prepared in the invention is compact, so the bulk density is improved, and the apparent porosity of the refractory material is reduced to prevent expansion, thereby all physical performances, such as the strength, the thermal shock resistance and the thermal impact resistance of the refractory material are further improved; and the preparation method has the advantages of simplicity, abundant raw materials, and suitableness for factory production.