328results about How to "Rich sources" patented technology

The invention discloses a yam fish ball and a production method thereof. The yam fish ball comprises the following components by weight part: 10 parts of fish mixture, 1-4 parts of Chinese yam rhizome, 0.2-0.4 part of egg white, 0.2-0.6 part of potato starch, 0.2-0.4 part of fat lining, 0.73-0.83 part of modifier and 0.5 part of seasoning. The method comprises the following steps: (1) selecting fresh water fish; (2) poaching, draining, rubbing and straining fish meat; (3) preparing yam mash; (4) mincing the fish meat and producing balls; (5) gelling the yam fish balls; and (6) packaging, quickfreezing and refrigerating. The yam fish ball produced by the method has low cost, full nutrition, delicious taste, white colour and good sense, is easy for digestive absorption and is favorable forhealth of human bodies.

The invention discloses a pitch-based carbon fiber and a preparation method thereof. The preparation method comprises the following steps of: putting a mixed solution of direct coal liquefaction residue powder and a tetrahydroquinoline solvent in an autoclave, heating up to 150-400 DEG C and pressurizing to 2-50 MPa after replacing the air in the autoclave with nitrogen, simultaneously introducing hydrogen for hydrogenation, removing most sulfur, oxygen and nitrogen contained in the primary residue via vacuum distillation, removing the undissolved substances of the tetrahydroquinoline via vacuum filtration, recovering and recycling the tetrahydroquinoline solvent via vacuum distillation; finally obtaining the pitch-based carbon fibers after performing the processes of melt spinning, preoxidation, low-temperature carbonization, high-temperature carbonization, surface treatment, post treatment and the like on the soluble substances of the tetrahydroquinoline.

The invention discloses a flue-cured type mixed tobacco which is suitable for a water smoking pipe; the mixed tobacco is prepared by mixing general tobacco and main material of plants, wherein, the main material of plants consists of one or a plurality of mixtures, namely, Chinese herb medicines, fruits and vegetables; besides, the mixed tobacco is added with honey, glycerin, preservative and spices, etc.; the flue-cured type mixed tobacco is characterized in that the general tobacco and natural plants are adopted as the main materials, all the ingredients are used for reasonable combining, matching and being used together, and a plurality of ways are used for reducing the generation of hazardous substances of the tobacco; the flue-cured type mixed tobacco has the effects of clearing throat, being beneficial to the throat and having fragrant smoke gas and has good market application prospect.

The invention relates to a novel manufacturing process of a touch screen, comprising the following steps: 1. selecting PET and glass, and carrying out surface treatment, i.e. selecting a PET polyester sheet and a glass substrate, making a hard coating or a hard coat on the PET, and making a silica coating on the glass to suitably prepare for making a transparent conductive layer; 2. carrying out screen printing on transparent conductive ink; 3. curing; 4. carrying out screen printing on silver paste; 5. carrying out screen printing on insulating oil; 6. carrying out screen printing and rubberizing; and 7. pasting, detecting and obtaining the finished product, i.e. pasting the PET material after screen printing and rubberizing with the semi-finished glass to obtain the finished touch screen, testing whether the linearity of the touch screen complies with the standard by utilizing a linearity tester, and finally delivering the finished product after passing the test. The novel manufacturing process of the touch screen has simple manufacturing process and high value in efficiency, cost and process.

The invention discloses a wood adhesive active filler. The wood adhesive active filler is formed by mixing a component (A) and/or a component (B). The component (A) is ultrafine powder which is prepared from fruits or seed shells which are rich in lignin, and comprises one or a mixture of the ultrafine powder of peanut shells, oil tea shells, walnut shells, almond shells, hawthorn shells, nut shells, pine nut shells and cottonseed shells. The component (B) comprises one or a mixture of ultrafine powder of larch barks, eucalyptus barks, black wattles, red bayberry barks and peach barks. The wood adhesive active filler has the advantages that agriculture and forestry processing residues are low in cost and are rich; the wood adhesive active filler replaces a great amount of flour and bean flour used in the artificial board industry, so that the situation of grain tension can be relieved; a new purpose is created for the agriculture and forestry processing residues, and the utilization value of the agriculture and forestry processing residues is increased; and a novel high-quality active additive is provided for the plywood industry, the formaldehyde release amount of a plywood can be decreased, and further the bonding strength of the plywood can be remarkably improved.

The invention discloses a preparation method of an asphalt hard carbon material for a lithium ion battery cathode. The method includes the steps of: taking asphalt with a softening point of 200-280DEG C as the raw material, crushing it and adding it into a tube furnace, in an air atmosphere, raising the temperature to 250-350DEG C, carrying out curing, adding the cured asphalt powder into a carbonization furnace, and in a nitrogen atmosphere, raising the temperature to 700-1300DEGC to perform a carbonization treatment, thus obtaining the asphalt hard carbon material. The method provided in the invention has the advantages that it is simple and practical, green and environment-friendly, and is easy for large-scale industrial production. And the prepared asphalt hard carbon material as a lithium ion battery cathode material has high reversible capacity, good large current performance and excellent cycle performance.

The invention discloses a preparation method of a concrete thickener. The preparation method of the concrete thickener comprises subjecting small unsaturated amide monomers, small unsaturated hydroxyl-ester monomers and small unsaturated sulfoacid monomers to aqueous phase radical polymerization under the combined action of a redox system composed of initiating agent and reducing agent to obtain polymerized products; adjusting the PH of the polymerized products to be 6-7; adding water into the polymerized water to obtain the concrete thickener at a concentration of 3-10wt%. According to the preparation method of the concrete thickener, the product performance can be adjusted by controlling the molecular weight of the polymerized products, so that high reaction velocity can be obtained, organic solvent can be omitted, and being non-toxic and pollution-free and simple in operation can be achieved. The concrete thickener prepared through the method can avoid segregation under the premise of achieving high water retention, thereby guaranteeing the slump resisting performance of concrete and achieving stable product performance.

The present invention relates to one kind of soluble and edible composite corn starch packing-film and its preparation. The composite packing film is prepared with corn starch and konjaku, as well as reinforcer, strengthener and adhesive and through the steps of preparation of main gelatin, preparation of auxiliary gelatin, adding reinforcer, strengthener and adhesive, dissolving with water, gelatinizing to prepare composite gelatin and final filming. The present invention has the advantages of wide material source, no harm to human body, no pollution, high mechanical performance, etc.

The invention discloses a method for preparing angiotensin converting enzyme inhibitory peptide (ACEIP) by using enzymatic degradation on mussel-digested protein, which comprises the following steps: 1) mixing defatted dry mussel powder or mussel protein powder serving as raw material with water, then adjusting the pH value to 9.0 to 9.5 so as to obtain a mixed liquor; 2) raising the temperature of the mixed liquor to 60 to 65 DEG C for preheating, then adding alkali protease into the mixed liquor to carry out zymolysing reaction, wherein the zymolysing temperature is 60 to 65 DEG C and the zymolysing time is 180 to 240 minutes; and 3) carrying out enzyme inactivation processing on zymolysing products obtained in step 2 firstly so as to obtain zymolysing liquid; then sequentially carrying out ultra-filtration, freeze drying and chromatography on the obtained zymolysing liquid so as to obtain the ACEIP. The ACEIP prepared by using the method of the invention has the characteristic of strong activity.

The invention discloses a phase change thermal storage material which is composed of substance according to mass ratio of 85-98 parts of trihydrate sodium acetate, 1-10 parts of carboxymethyl cellulose, 0.5-3.5 parts of hexahydrate magnesium chloride, 0.1-2.5 parts of sodium carboxymethyl cellulose, and 0-10ppm parts of nanophase powdered carbon. Raw materials of the phase change thermal storage material have rich supply and low cost. The phase change thermal storage is large (larger than 280MJ/m3), the thermal coefficient is large (larger than 0.8W/m,k),and the phase change temperature is 54-60 DEG C, thereby favoring recycle of condenser heat of air conditioners and other waste heat recovery field. The condenser depression is relatively small (3 DEG C-5 DEG C), which greatly favors releasing of required heat.

The invention relates to the field of aluminum-copper alloy surface treatment and aims to provide a method for preparing an aluminum-copper alloy microarc oxidation film, which solves the problem on the application of microarc oxidation in the production of aluminum-copper alloy. The preparation method is characterized in that a special electrolyte composite is adopted to prepare the microarc oxidation film, and the property of a generated film can be effectively changed by controlling the proportion among technological parameters, such as electrical parameters, electrolyte composite systems, processing time and the like. The preparation method has the advantages that the electrolyte composite has abundant sources, and is environmentally-friendly and easy for proportioning; and the technological process for preparing the film is simple and is easy to operate and control, and the prepared film has excellent corrosion resistance.

The invention relates to a heat-resisting modified bamboo fiber and a method for preparing an automotive brake friction material from the same. The heat-resisting modified bamboo fiber is prepared by modifying a bamboo fiber through borax. A composite friction material is prepared from the heat-resisting modified bamboo fiber, phenolic resin, inorganic whisker, a friction performance regulator and the like, so that the environmental-friendly automotive brake composite material with excellent friction coefficient, high stability, low wear rate and good heat fading resistance is obtained. Compared with an unmodified bamboo fiber, the bamboo fiber subjected to heat-resisting modification, which is disclosed by the invention, has the advantages that the heat resistance of the bamboo fiber is obviously improved; and the high temperature friction wear performance of the composite friction material prepared from the heat-resisting modified bamboo fiber is also obviously improved.

The invention belongs to the technical field of biochemical industry, and relates to a novel process for synthesizing polyol ester by catalysis of lipase. The process is to catalyze an ester exchange reaction of fatty acid low alkanol ester and neopentyl polyol by immobilized lipase in the presence of an organic solvent to synthesize the polyol ester. Tertiary butyl alcohol is added into a reaction system to improve the solubility of substrate, so that the whole reaction system is in homogeneous (except immobilized enzyme), adverse effects of water on enzyme in catalytic activity and stability can also be completely eliminated, the reaction activity and stability of the immobilized lipase Novozym 435 and the immobilized lipase Lipozyme TL IM can be improved so as to remarkably improve the yield of the polyol ester. The fatty acid low alkanol ester adopted by the method can be selected from an alcoholysis product of natural animal and vegetable fat with methanol or ethanol, wherein the natural animal and vegetable fat has rich sources with low cost, and is a renewable resource. The renewable resource with wide sources as a raw material to synthesize the polyol ester has large market potential.

The invention discloses a continuous extraction method for pectin, tannin and pigment in a persimmon pericarp, which comprises the following steps: a. after the persimmon pericarp is pretreated, the pretreated persimmon pericarp is extracted by water at a temperature which is more than or equal to 70 DEG C and is less than 100 DEG C to obtain an extract and pulp stock; b. the extract is filtered by an ultrafiltration membrane with a cutoff molecular weight of between 10000 and 30000, the trapped part is a pectin liquid, a filtrate is absorbed and separated by a macroporous resin to obtain the tannin; and c. the pulp stock obtained in step a is extracted by acetone at a temperature of between 60 and 70 DEG C, and an extraction liquid is filtered, distilled and dried to obtain the pigment. The method has rich sources of raw materials, is simple, and is more suitable for large-scale industrial production; a used reagent has lower price, small toxicity, and strong maneuverability, and is easy to amplify the technology, and the cost is lower than extraction cost of corresponding products at present. A product extracted by the method is safe and nontoxic, and has simple and reasonable production technology.

The invention relates to easy-to-clean fluorocarbon paint and a preparation method thereof. The fluorocarbon paint comprises the following components in parts by weight: 40-60 parts of fluorocarbon resin, 10-20 parts of crosslinking resin, 5-20 parts of a mixed solvent, 3-30 parts of a pigment, 0-5 parts of extinction powder, 0-1 part of a flatting agent, 0-1 part of a foam killer and 0-1 part of a dispersant. The fluorocarbon resin with low interface energy is mainly adopted for crosslinking and solidifying with the crosslinking resin, and the characteristic that fluorine-containing side chains can be centralized on a coating surface after film forming is utilized to give the role of fluorine atoms into play to the utmost extent, so that the surface performance of a copolymer is effectively changed to form a hydrophobic-oleophobic group, and accordingly, the effects of water resistance, oil repellency, rust prevention and the like are achieved. Compared with the prior art, the fluorocarbon paint provided by the invention is excellent in easy-to-clean performance, the paint film is smooth and even in appearance and sound in color, and the light and color maintenance properties are good.

The invention discloses a nano titanium dioxide aqueous inorganic photocatalytic coating and a preparation method thereof. The coating comprises nano titanium dioxide, sodium hexametaphosphate, potash water glass, filler, an inorganic curing agent and water. The preparation method comprises the following steps of: adding the nano titanium dioxide to an sodium hexametaphosphate aqueous solution serving as a dispersing agent and then evenly stirring, then adding to a potash water glass aqueous solution and evenly stirring, then evenly mixing and dispersing with the filler and then adding the inorganic curing agent and evenly stirring to obtain the nano titanium dioxide aqueous inorganic photocatalytic coating. The nano titanium dioxide aqueous inorganic photocatalytic coating has better water tolerance and cohesive force, good effect of photocatalytically degrading nitric oxide, does not pollute the environment and has available raw material sources and low price.

The invention discloses a wheat bran polysaccharide with antitumor and immune regulation activities and an extraction method thereof. The method for extracting the polysaccharide comprises the following step: performing enzymolysis of wheat bran with xylanase to obtain the polysaccharide, wherein the proportion of xylanase and wheat bran is (5U-12.5U):1g. The method of the invention adopts wheat bran which is a subsidiary agricultural product resource, to largely prepare the polysaccharide product by processing and extracting, the polysaccharide product mainly contains araboxylan (or pentosan); animal experiments show that the polysaccharide has the similar immune regulation and antitumor effects of the antitumor adjuvant drugs which are used in clinic; in addition, the price of raw materials of the polysaccharide is cheap and the sources are wide so that the polysaccharide of the invention has more market competition advantage and wide industrialized development prospect.

A process for preparing BPFS by catalyzing and oxidizing ferrous sulfate with microorganism, which comprises following steps: taking industrial ferrous sulfate as raw materials, using industrial concentrated sulphuric acid to regulate pH according to the adding content of 10-13kg/m3, taking inorganic salt as nutrients, preparing ferrous sulfate reaction feed liquid whose total iron content is 20-100kg/m3, inducing ferrous sulfate thiobacillus into the reaction feed liquid, pumping in air with the speed of 9-15 L/L. min at indoor temperature, preparing BPFS stock solution whose total iron content is 20-100kg/m3 and reaction cycles are stable, mixing the stock solution with the reaction feed liquid with the same concentration, pumping in air according to the above conditions, preparing BPFS whose total iron content is 20-100kg/m3 under the catalysis of the bacillus, and controlling the concentration of Fe 2+ no higher than 0.3 kg/m3 at the reaction terminal. When the ferrous sulfate reaction feed liquid whose total iron content is more than 50kg/m3, firstly, 1/2 ferrous salt and concentrated sulphuric acid are added, and each residual is complemented when the concentration of Fe2+is lower than 3.0kg/m3.

The invention provides a liquid strain culture medium for Lyophyllum shimeji industrial production and a preparation method thereof. The liquid strain culture medium per liter contains 2-5g of soybean cake powder, 2-5g of maize meal, 20-30g of sucrose, 0.3-1g of magnesium sulfate, 0.5-2g of potassium dihydrogen phosphate, and 0.1-0.5 ml of defoaming agent. The preparation method comprises weighing the sucrose, the magnesium sulfate and the potassium dihydrogen phosphate, mixing completely, adding boiling water, and stirring to dissolve completely; weighing the soybean cake powder and the maize meal, adding cold water, stirring to dissolve, and removing bubbles; mixing them together to obtain a mixed solution, and diluting to certain volume; adjusting the pH value with hydrochloric acid and adding the defoaming agent; and sub-packaging and sterilizing by high pressure steam. The liquid strain culture medium solves the advantages of prior art, such as high cost due to yeast extract and peptone as nitrogen source and monosaccharide as carbon source, and complex operation process, insufficient nutrition and inadaptation for industrialized production requirement due to decoctions of potato and bran as culture medium.

The invention relates to a fire coal synergist which is mainly prepared by multicomponent complex formulation of the following components: a modifier, a catalyst, a combustion promoter, a high-temperature sulfur-fixation auxiliary agent, a denitration agent, a smoke suppressor, a descaling scorch retarder and the like; during using, the synergist is added with an amount of 0.2% of the fire coal amount; and the synergist can modify the fire coal, catalyze the combustion, thus greatly increase the flame temperature and the flame amount, reduce the discharge of SO2 and NOX, reduce flue gas blackness, increase boiler heat efficiency, decrease coal consumption, increase the boiler service life, reach the purposes of energy saving and emission reduction, and has significant economic benefit andsocial benefit.

The invention discloses a method for producing polyaluminum chloride without heating. The method comprises the following concrete steps: (1) sequentially adding a waste aluminum chloride liquor generated in a Friedel-Craft reaction, an aluminiferous hydrochloric acid, an industrial hydrochloric acid and water into a heat insulating reaction kettle to prepare a mixed acid in which the percentage of Al2O3 is 1% to 4% and the percentage of HCl is 12% to 18%; (2) adding aluminum oxidized sludge into the mixed acid, stirring for 60-90 minutes until the aluminum oxidized sludge is completely dissolved, heating to the reaction temperature of 60 DEG C to 80 DEG C, controlling the percentage of the HCl in a semi-finished product to be 0.5% to 3.5% and the percentage of the Al2O3 in the semi-finished product to be not less than 5.0%; (3) adding calcium aluminate powder into a semi-finished product liquid, regulating the percentage of the Al2O3 in the reaction liquid to be 11% to 12% and the basicity of the reaction liquid to be 60% to 90%, maintaining the temperature required by the reaction by utilizing the heat generated in the reaction, timing when the temperature rises to 90 DEG C, reaction under preserved temperature for 60-90 minutes and performing a filter pressing treatment to obtain a finished polyaluminium chloride product. By adopting the method to prepare the polyaluminium chloride, the production process is simple, no steam does need to be heated, the emission of acid mist and waste slag is reduced, the production cost is lowered and the recycle of waste resources is realized; therefore, the method is an economical and practical production method which saves energy and reduces emissions.

The invention discloses a comment map building method and device based on artificial intelligence. In one specific embodiment, the method mainly comprises the steps of determining a comment text based on comment data of a network page; recognizing a comment body and a comment viewpoint in the comment text according to features in the comment text; generating a body-viewpoint pair comprising the comment body, comment viewpoint and emotional tendency based on the comment body and the comment viewpoint; generating a comment label correspondingly related to the body viewpoint based on news information; generating a comment map based on the comment label and the body-viewpoint pair. According to the comment map building method and device based on the artificial intelligence, when comments are provided outwards, the pertinence and accuracy of the comments and the control over comment emotion are improved; meanwhile sources building the comment map are rich and wide in coverage, thus the comments provided outwards reflect most comment suggestions, and the application range of the comment map is widened.

The invention relates to a preparation method of an epoxy resin adhesive curing agent, in particular to a preparation method of a cardanol-containing polyphenol modified amine epoxy resin curing agent and aims to improve the toughness of phenolic amine curing agents in consideration with the heat resistance of the curing agents. The preparation method comprises the steps as follows: 1, cardanol and phenols are added to a reaction device and heated to 40-50 DEG C, an acid catalyst is added, the mixture is heated to 95-100 DEG C and reacts at the constant temperature for 1-3 h, and an intermediate product is obtained; 2, the intermediate product is cooled to 20-50 DEG C, polyamine is dropwise added, aldehydes are added after addition, the mixture is heated to 90-100 DEG C and reacts at the constant temperature for 2-5 h and then cooled to 75-85 DEG C after the reaction ends, reduced pressure dehydration is performed until no water exists, and the cardanol-containing polyphenol modified amine epoxy resin curing agent is obtained. The prepared cardanol-containing polyphenol modified amine curing agent has good heat resistance of phenol phenolic amine epoxy curing products and has 90-degree stripping up to 2-5 KN/m.

The invention relates to a method for preparing a homogeneous mullite material from kyanite. The method is characterized in that the method comprises the following steps: 1, weighing 60-100 wt% of kyanite containing equal to or greater than 40% of Al2O3, 0-40 wt% of high bauxitic clay containing equal to or greater than 85% of Al2O3, 0-40% of industrial alumina containing equal to or greater than 98% of Al2O3, a sintering agent rare earth oxide which accounts for 0-1.5% of the sum of weight percentages of above raw materials, and 0-1.5% of MgO with the purity of equal to or greater than 98.5%, wherein the rare earth oxide is anyone of CeO2, La2O3 or Y2O3; 2, cogrinding mixing through a wet process or a dry process until the granularity is less than 0.074mm, extruding into a blocky blank through semi-dry extrusion or wet extrusion, and drying to the water content of less than 1.0%; and 3, calcining the dried blank under conditions of a temperature of 1460-1600DEG C, insulating for 8-16h, and cooling to room temperature to prepare products with the Al2O3 content of 45-70% and the volume density of 2.3-2.8g/cm<3>.

The invention belongs to the field of polymer materials and bio-medical materials and particularly relates to a method for preparing chitosan/sodium alginate natural polymer core-shell microspheres by a one-step process. The method is characterized by comprising the following steps: firstly, preparing a calcium chloride/chitosan mixed solution and a sodium alginate solution; dripping the calcium chloride/chitosan mixed solution into the sodium alginate solution by use of a microinjector; placing to form microspheres; taking out the microspheres; and cleaning with distilled water to finally obtain the chitosan/sodium alginate natural polymer core-shell microspheres. The method has the advantages that the preparation process is simple, the preparation steps are simplified, the equipment is simple, the preparation conditions are mild, the control is easy, the repeatability is good, after-treatment is not needed, and the cost is low. The natural polymer materials which have the characteristics and advantages of being rich in source, green and environment-friendly, favorable in biocompatibility, non-toxic, biodegradable, and low in price are adopted as the preparation raw material, so that the prepared chitosan/sodium alginate natural polymer core-shell microspheres have a very high application value in the bio-medical field.

The invention discloses a preparation method for a cellulose based nano silver composite material. The preparation method is adopted to obtain the cellulose based nano silver composite material through the following operation steps: preparing a carboxylic modified cellulose aqueous dispersion, preparing a carboxylic modified nano cellulose aqueous dispersion, and preparing the cellulose based nano silver composite material. The preparation method has the benefits that the carboxylic modified nano cellulose is adopted as a carrier, a stabilizer and a reductive agent of Ag<+>, the preparation method is rich in raw material sources and simple in preparation process, the product has the excellent properties of both cellulose and nano silver, and nano silver has the advantages of low probability of desorption, stable property and the like.

The invention provides a manufacturing method of self-wear-resisting wooden decorative material with simple process and equipment. Pressing will not wear out the polishing pad of the heat press. It includes the following steps: immersing the substrate suitable for impregnation into the impregnating resin and then taking it out; drying the impregnated substrate to make the surface of the substrate slightly sticky to the touch; putting the wear-resistant material of more than 100 meshes through the air-laid The loading machine is paved on the upper surface of the pre-dried substrate, and the paving amount of the wear-resistant material is 5-25g/m2; the substrate on which the wear-resistant material is paved is passed through a pair of round rollers to press the wear-resistant material. Firmly and firmly adheres to the surface of the substrate; the substrate is re-dipped in the impregnating resin and then placed in a dryer to dry again.

The invention relates to a preparation method of water-soluble fluorescent calcium fluoride nanoparticle. The preparation method comprises the following steps of dissolving soluble calcium salt into deionized water, so as to form a solution A; dissolving soluble citrate salt and soluble amino acid into the deionized water, so as to form a solution B; dissolving soluble fluoride salt into the deionized water, so as to form a solution C; gradually dripping the solution B into the solution A, and stirring, so as to form a mixing solution D; gradually dripping the solution C into the mixing solution D, and stirring, so as to form a mixing solution E; reacting the mixing solution E in a sealed hydrothermal reactor, and cooling to room temperature, so as to obtain a reaction solution; alternatively centrifuging and washing precipitate after centrifuging of the reaction solution by the deionized water and absolute ethyl alcohol, re-dispersing into the deionized water, and adjusting the pH (potential of hydrogen) value to 8.0 to 10.0, so as to obtain the water-soluble fluorescent calcium fluoride nanoparticle. The preparation method has the advantages that the raw materials are poisonlessand green, the sources are rich, the obtaining is easy, the cost is low, and the synthesis technology is simple; the product quality is stable, the technology repeatability is good, the crystallizingdegree and stability of the particles are good, and the water-soluble fluorescent calcium fluoride nanoparticle can be applied into biological materials and coating materials.

The invention relates to a preparation method of lithium hexafluorophosphate. The method comprises the following steps: (1), enabling anhydrous hydrogen fluoride and strong phosphoric acid to react under the protection of inert gas to prepare hexafluorophosphoric acid; (2), adding oleum to the hexafluorophosphoric acid prepared in the step (1) under cooling stirring to prepare phosphorus pentafluoride gas; (3), dissolving high-purity lithium fluoride in an anhydrous hydrogen fluoride solution to form an anhydrous hydrogen fluoride solution containing the lithium fluoride; (4), cooling and guiding the phosphorus pentafluoride gas into the anhydrous hydrogen fluoride solution containing the lithium fluoride, reacting, crystallizing, separating and drying to obtain a pure lithium hexafluorophosphate product; and (5), continuously guiding the unreacted and cooled phosphorus pentafluoride gas to the anhydrous hydrogen fluoride solution containing the lithium fluoride and continuously reacting to obtain a lithium hexafluorophosphate finished product. The phosphorus pentafluoride in the process is cooled to fully react so as to prevent incomplete reacted phosphorus pentafluoride powder from causing environmental-protection pressure.

The invention discloses a method for producing carotinoid through cordyceps solid culture. The method comprises the following steps: 1) carrying out a solid culture for cordyceps militaris, and collecting culture products; 2) carrying out a wall-breaking process for the culture products, followed by centrifugating and collecting precipitation; 3) carrying out extracting for the precipitation through a organic solvent, followed by filtering to obtain carotinoid crude extracting solution, then removing the organic solvent from the carotinoid crude extracting solution to obtain the carotinoid. With the method provided by the present invention, yield of the carotinoid is high, wherein 60-700 [mu]g carotinoid can be obtained through extracting one gram of fresh culture products; the prepared cordyceps carotinoid presents bright orange yellow, and is a natural product. In addition, culture media raw materials required by the solid culture provided by the present invention have characteristics of abundant source and low price; the method does not require special equipment; culture media residues generated during producing are developed and used.