584results about How to "Suitable for large-scale industrial applications" patented technology

The invention discloses a preparation method of a photovoltaic glass surface antireflection film, which is characterized by comprising the following steps of firstly, preparing inorganic-organic hybrid silicasol; secondly, coating; thirdly, hydrophobic treatment; and fourthly, solidification treatment. Compared with the prior art, the invention has the advantages that the film-substrate cohesion between an antireflection film and substrate photovoltaic glass is stronger, and therefore, the wiping resistance of the coated photovoltaic glass surface antireflection film is enhanced; a layer of hydrophobic group with low surface energy is formed on the surface of the antireflection film, and therefore, the corrosion of moisture to a film microstructure is reduced, and the long service life of the coated photovoltaic glass is ensured; and the invention has low whole process cost and simple technical route and is suitable for industrial and large-scale application.

The invention provides a metal shell and a preparation method thereof. The metal shell comprises: a metal base material and a coating. A metal base material surface possesses a progressively-variant texture. The coating is located on the progressively-variant texture. The progressively-variant texture is a hole-shaped and / or linear pattern. In the hole-shaped pattern, a variation gradient of a hole diameter is from 0.01to 2.0 mm and / or the variation gradient of a distance between adjacent holes is from 0 to 2.0 mm; in the linear pattern, the variation gradient of a line width is 0.01-2.0mm and / or the variation gradient of the distance between adjacent lines is from 0-2.0mm. A preparation technology of the metal shell is simple. Cost is low. A gradual change effect is good. Simultaneously, a metallic sense of the metal shell is strong and wear-resistance and corrosion-resistance performance is good.

The invention provides an ectopic coupled repairing system and method for treating organic compound contaminated soil. The system comprises a contaminated soil pile body, a nutrient solution and moisture distribution pipe network connected with the contaminated soil pile body, as well as an air exhaust and tail gas treatment pipe network connected with the contaminated soil pile body, wherein the contaminated soil pile body comprises a concrete base layer spreading on an open field, a first layer of geotextile which is spread on the concrete base layer, a first layer of a high-density polyvinyl chloride impermeable membrane which is spread on the first layer of geotextile, a second layer of geotextile which is spread on the first layer of the high-density polyvinyl chloride impermeable membrane, a gravel gas conductive layer which is spread on the second layer of geotextile, a third layer of geotextile which is spread on the gravel gas conductive layer, contaminated soil piled on the third layer of geotextile, as well as a second layer of the high-density polyvinyl chloride impermeable membrane covering on the contaminated soil. The repairing system can be used for repairing large-scale volatile organic matter and biodegradable organic matter compound contaminated soil with low cost, and is suitable for large-scale industrial application.

The invention relates to a lithium-nickel-cobalt-manganese oxide composite material particle, which comprises an anode active material particle and an aluminum phosphate layer coated on the surface of the anode active material particle, wherein the material of the anode active material particle is shown by a chemical formula: Li xNiaCobMncMdO2, wherein x is not less than 0.1 but is not greater than 1.1, a is greater than 0 but is less than 1, b is greater than 0 but is less than 1, c is greater than 0 but is less than 1, d is not less than 0 but is not greater than 0.2, a+b+c+d is equal to 1, and M is selected from one or several of alkali metal elements, alkaline-earth metal elements, XIII-family elements, XIV-family elements, transition-family elements and rare-earth elements. The invention also relates to a preparation method for the lithium-nickel-cobalt-manganese oxide composite material particle and a lithium ion battery.

The present invention provides a method for preparing a condensation compound of methylol naphthalene sulphonic acid formaldehyde. The method comprises the following steps that methylnaphthalene is adopted as the material, and is sulfonated with 104.5 percent of fuming sulfuric acid in advance; the sulfonated product is condensed with formaldehyde; and, finally the pH is adjusted to between 6 and 9 by liquid alkali, and thus the methylol naphthalene sulphonic acid formaldehyde condensation compound is obtained. The method does not need to add an azeotrope former, and does not need to add and distill of sulfonated bodies every time. The process is simplified, the manufacturing cost is saved, and the impurity content in the product is reduced. Additionally, the 104.5 percent of fuming acid is adopted to sulfonate. Not only the efficiency of methylnaphthalene sulfuration is improved, but also the total acidity of the condensation reaction process is reduced. The subsequent process completely adopts liquid alkali. No calcium sulfate calcium offscum is produced. Compared with the adoption of concentrated sulfuric acid, the quality of the product is equivalent in dispersancy, calcium and magnesium ions are not produced, and the product is stable in heat resistance.

A phase-transfer catalyst for controlled of oxidizing reaction has a chemical formula: QmHnXMpO4+3 or QmMO3(L). It is not soluble to reaction mediumd but can become the active substance soluble in reaction medium under the action of one reactant to further act on anothe reactant for selective reaction. When one of the reactants is consumed off, the catalyst can restore its initial structure and be educed out for cyclic use.

The invention belongs to the technical field of nanometer material, particularly relates to a preparation method of hydrophobic nano-silica. Silicon tetrachloride is added to alkaline solution to perform a hydrolysis reaction so as to prepare silica, and organic modifiers are added to liquid reactant for reaction; then hydrophobic nano-silica is obtained through water washing and drying; or the organic modifiers are added for reaction after the liquid reactant is processed through water washing, and then hydrophobic nano-silica is obtained through drying. The preparation method effectively solves the utilization problem of a by-product that is silicon tetrachloride in photovoltaic industry and other industrial productions, is simple, fast, safe and controllable, achieves lower cost, and can process silicon tetrachloride massively.

The invention discloses a method for collaborative resource between a waste circuit board and an automobile tail gas waste catalyst. The method comprises the following steps: firstly, obtaining a copper-rich collective through performing crushing, magnetic separation and high voltage electrostatic separation on the waste circuit board; crushing the automobile tail gas waste catalyst to obtain waste catalyst powder; mixing the copper-rich collective and the waste catalyst powder to obtain mixed powder; adding a reagent in a certain amount of mixed powder in proportion, placing in a high-temperature muffle furnace for reaction and cooling to a room temperature after the completion of the reaction to obtain a product of which an upper layer is a glass layer, and a lower layer is a copper layer; separating the copper layer from the glass layer, taking out, crushing, then placing the glass layer in the muffle furnace for heat treatment; after the completion of the treatment, pouring microcrystalline glass liquid into a mold while the microcrystalline glass liquid is still hot, reducing the temperature and forming; after a room temperature is lowered, preparing out fluorescent microcrystalline glass. In the process, the recovery rate of precious metals exceeds 98 percent, the precious metals are enriched for 20 times or more, and the obtained fluorescent microcrystalline glass can betaken as an LED fluorescent lamp and other materials. To sum up, the method has the characteristics of being efficient, environmentally friendly and high in resource degree and is suitable for large-scale industrial application.

An enrichment and separation method of blue green algae phycocyanin belongs to the technical field of biochemical separation engineering. The invention comprises the following steps: blue green algae disrupted solution is prepared; JDN-3 type resin enriches phycocyanin in the blue green algae disrupted solution; phycocyanin is eluted and separated; chromatographic separation is carried out on the JDN-3 type resin; freeze drying is carried out on eluent after desalination to obtain phycocyanin with certain purity; the recovery rate of albumen is up to 85.5%. The method is simple, directly uses the JDN-3 type resin to enrich the blue green algae disrupted solution without using usual ammonium sulfate salt precipitation, organic solvents, isoelectric points and other similar methods, reduces the dosage of chemical agents in the preparation process, simplifies the steps of the purification process, avoids the loss of products; the phycocyanin obtained by the chromatography of the JDN-3 type resin has higher purity which is up to A620 / A280>2.0. The raw material uses fresh algae or dried algae powder, or even field blue-green algae in Taihu Lake, thereby providing a technical method for solving scale use of algal resource.

The invention discloses a catalyst for synthesis of methyl methacrylate by formaldehyde and methyl propionate and a preparation method of the catalyst. The catalyst mainly comprises a main active component, an activated auxiliary and a carrier, wherein the main active component is Cs, the activated auxiliary is selected from one or more of Sb, Nb and Ag, and the carrier is a nanometer SiO2 / Al2O3-ZrO2 composite carrier; and metered by oxides and according to mass percentage, the main active component Cs accounts for 5%-20%, the activated auxiliary accounts for 1%-5%, and the balance is the carrier. Simultaneously, the invention discloses a preparation method of the catalyst. The catalyst provided by the invention is good in activity, selectivity and stability, simple in manufacture technology, suitable for large-scale industrialized application and environment-friendly.

The invention discloses a preparation method and application of a silicon-based spiny nanocone ordered array. The preparation method comprises the steps: preparing a tightly-arranged single-layer ordered PS sphere array on a silicon wafer substrate; heating the single-layer ordered PS sphere array on the silicon wafer substrate; then, carrying out etching by using a reactive ion etching method, and regulating an etching current at least once in the etching process; and then, after finishing the etching, removing the single-layer ordered PS sphere array on the silicon wafer substrate to preparethe silicon-based spiny nanocone ordered array. A layer of gold film is deposited on the surface of the silicon-based spiny nanocone ordered array serving as a template by using a physical depositionmethod to prepare a silicon-based spiny nanocone ordered array on which the gold film is deposited, and the silicon-based spiny nanocone ordered array can be directly used as a substrate material with surface-enhanced Raman effect. The preparation method is simple, convenient to operate, low in cost, economic and environment-friendly; and the prepared silicon-based spiny nanocone ordered array islarge in structure area, good in uniformity, clean in surface, high in sensitivity and good in detection property.

The invention provides a method for treating copper dross. According to the method, copper dross is treated by using an oxygen enrichment molten pool smelting side blowing furnace, coal granules are adopted as a reducing agent and fuel, copper dross, pure alkali, pyrite and water granulated slag are adopted for blending, together with the coal granules, are fed into the furnace from the feeding hole of the oxygen enrichment molten pool smelting side blowing furnace through a belt, and are blown into an oxygen enrichment air smelting pool for smelting so as to obtain crude lead, copper matte, furnace slag and high-temperature flue gas. By adopting the method provided by the invention, continuous feeding is achieved; due to adoption of a DCS automatic control technique, the working intensity of operators is low, the flushing and casting environment is good, the side blowing treatment bed is high in capacity, the efficiency of the smelting pool is high, the metal recycling rate is high, and the smelting energy consumption is low.

The invention relates to a production system for continuously producing ethanol by ethyl acetate through using hydrogenation. The production system adopts a manner of combining a gasifying device and a heat exchanger and can utilize heat of thermal reaction gas generated by reaction to the greatest extent. The invention further relates to a method for continuously producing the ethanol by utilizing the production system. The production system disclosed by the invention can sufficiently utilize heat energy contained in the thermal reaction gas; and meanwhile, the use amount of condensed water is further reduced and the requirements of a novel chemical industry which is green and energy-saving can be met. The production method disclosed by the invention recycles the heat of the thermal reaction gas to the greatest extent, reduces the energy consumption, has moderate production conditions and convenience for operation, and is very suitable for large-scale industrialized application.

The invention provides a deoxidation catalyst for olefin gas, a preparation method and an application thereof. The deoxidation catalyst for the olefin gas comprises, by oxide, 0.01-5 % by weight percent of active components selected from one or more of Pd, Pt and / or Ag, 1-20 % by weight percent of an active additive selected from any one of Mn, Fe, Co, Cu and Zn compounds, and the balance being a carrier, wherein the carrier is a nano TiO2 / Al2O3 composite carrier, and is prepared by a dry-mixing method, a sol-gel method or a co-precipitation method. The deoxidation catalyst is relatively high in mechanical strength, not easy to be pulverized, high in low-temperature activity, and long in service life, can be directly used for deoxidation and purification of industrial polyolefin, is free of reduction and activation, and can prevent olefin addition during a using process and can deoxidize oxygen not higher than 10000 ppm in the olefin to be less than 0.05 ppm.

The invention discloses a water resistant catalyst for aldol condensation. The water resistant catalyst comprises a main active ingredient, an active agent and a carrier, wherein the main active ingredient is one or more selected from oxides or salts of Cs; the active agent is one or more selected from oxides or salts of Sb, Nb, Ag, Al and Zr; the carrier comprises SiO2 and a carrier aid; the carrier aid is one or more selected from Al2O3, ZrO2, diatomite and kaolin; the SiO2 is hydrophobic nano SiO2; or (2) the catalyst is subjected to water-resistant treatment. The water resistant catalyst is used for aldol condensation, has the characteristics of high activity, high selectivity and long service life, is especially used for synthesizing methyl methacrylate through formaldehyde and methyl propionate. With calculation of methyl propionate, the selectivity of methyl methacrylate is 94 percent, and the single service life of the catalyst is over 400 hours. The catalyst is simple in preparation method and is suitable for industrial application.

The invention discloses an inner core type cloverleaf-pattern catalyst carrier and a preparation method and application thereof. The catalyst carrier comprises a catalyst carrier bar, and the catalyst carrier bar comprises an outer shell and an inner core. The cross section of the outer shell is in a hollow cloverleaf pattern, and the hollow part of the outer shell is filled with the inner core. The outer shell is made of a porous structure material. The inner core is made of a compact structure material, and the specific surface area of the inner core is smaller than 1 m<2> / g. The preparation method includes the steps that 1, Al2O3 powder which is of a porous structure is fully mixed with an aqueous solution containing an extrusion aid and a peptizing agent, so that a material I is obtained; 2, Al2O3 powder which is of a compact structure is fully mixed with an aqueous solution containing an extrusion aid and a peptizing agent, so that a material II is obtained; 3, after the material I and the material II are subjected to extrusion molding, drying and calcining are conducted. The catalyst carrier is applied to preparation of a Fischer-Tropsch synthesis catalyst. The catalyst carrier is high in anti-crush strength, large-scale industrial production can be achieved, the diffusing effect in the Fischer-Tropsch synthesis catalyst prepared through the catalyst carrier is small, methane selectivity is low and C5+ selectivity is high.

The invention discloses a gold nano array electrode and a non-enzyme hydrogen peroxide sensor manufactured by the same.The gold nano array electrode is prepared by adopting the following steps that a silicon-based single-layer polymer colloidal crystal array is prepared, and a gold film with the thickness of 10-100 nm deposits on the surface of a template by using the silicon-based single-layer polymer colloidal crystal array as the template and adopting a physical deposition method; the template deposited with the gold film is subjected to thermal decomposition and annealing treatment so as to remove the single-layer polymer colloidal crystal array, and a silicon-based gold nano array is obtained; the silicon-based gold nano array directly serves as the gold nano array electrode.The gold nano array electrode is low in detection limit, high in sensitivity and good in stability, and the preparation method is simple, simple and convenient to operate, economical and environmentally-friendly.

The invention discloses a uniform-hole amine resin and a preparation method and an application method thereof, belongs to the technical fields of decoloring resin synthesis of a novel hole structure, active ingredient separation and purification of a natural plant and the like, and in particular relates to a decoloring resin. The appearance characteristic and hole structure parameters of the uniform-hole amine resin are that the resin is spherical, faint yellow and semi-transparent; the grain diameter of the resin is 0.3 to 0.7mm; and the water content of the resin is 50 to 60 percent. The invention also discloses the preparation method and the application method for the uniform-hole amine resin. In the preparation of the uniform-hole amine resin, a non-good solvent serving as a porogen is not needed in the process of synthesizing the traditional macroporous resin; and a creative double-functional-group functional reagent and a polystyrene resin undergo a secondary crosslinking chemical reaction to generate a uniform-hole mesh structure, which has the structure characteristics of high crosslinking degree and high functional group content. For the decolouring application in plant polysaccharide, the decolouring rate of pigment in a plurality of plant polysaccharide extracts is over 95 percent and the recovery rate of the polysaccharide is over 90 percent only by one operation step, namely, adsorption; and the preparation method has the advantages of environmental-friendly process, low production cost, simple and convenient operation, high decolouring efficiency and suitability for large-scale industrial application.

The invention discloses a ternary Cu-Co-P (copper-cobalt-phosphor) nanorod as well as a preparation method and application thereof. The preparation method comprises the following steps of mixing copper nitrate, cobalt nitrate, urea and ammonia fluoride in water, so as to prepare a precursor mixed solution; placing a substrate into the precursor mixed solution, reacting for 480 to 600min in a high-pressure kettle at the temperature of 100 to 120 DEG C, and preparing a CuCo-LDH (hydrotalcite) nanorod on the substrate; placing the dried substrate and the CuCo-LDH nanorod into a ceramic boat withsodium hypophosphite; transferring into a tubular furnace, and heating for 0.5 to 2h at the temperature of 300 to 350 DEG C, so as to obtain the ternary Cu-Co-P nanorod. The ternary Cu-Co-P nanorod can be directly used as a working electrode for electrochemically decomposing water. The ternary Cu-Co-P nanorod has the advantages that compared with the existing transition metal phosphide, the waterhydrolyzing catalyzing cavity is higher in the pH (potential of hydrogen) electrolytes; the cost is low, the preparation technology is simple, the environment-friendly and non-pollution effects are realized, and the ternary Cu-Co-P nanorod is suitable for large-scale industrialized production.

The invention discloses a silicone rubber having high resistance to electric erosion and used for an insulator and a preparation method thereof. The silicone rubber comprises the following raw materials: methyl vinyl silicone rubber A, methyl vinyl silicone rubber B, fumed silica, aluminum hydroxide, zinc borate, aluminum oxide, a silane coupling agent, a structure control agent, hydrogen-containing silicone oil, vinyl silicone oil, zinc oxide, stearic acid, stearate, triethanolamine, tetrafluoroethene powder, an ultraviolet ray absorber, color masterbatch and a vulcanizing agent. The invention also provides the preparation method for the silicone rubber having high resistance to electric erosion and used for the insulator. The silicone rubber provided by the invention has high flame resistance and high resistance to tracking and electric erosion while meeting standard requirements for mechanical properties, hydrophobicity and weatherability of silicone rubber used for insulators; and the silicone rubber can guarantee long-term normal working of a composite insulator and improve the service life and operation safety of the composite insulator. The preparation method is simple, has low cost and is suitable for large-scale industrial application.

The invention discloses a method for producing an aluminum-magnesium alloy by utilizing a liquid aluminum cathode method. The method is used for high-efficiently producing the high-quality aluminum-magnesium alloy. The method comprises the following steps of dissolving the high-purity magnesium oxide (MgO) in an electrolyte system consisting of Na3PO3-MgF2-NaCl in an electrolytic cell under the electrolytic temperature of 850DEG C to 900DEG C, wherein the aluminum liquid which is formed by melting a high-purity aluminum ingot is used as a liquid cathode; and applying a coil magnetic field with the intensity of 30mT to 40mT outside the electrolytic cell so as to enable the aluminum liquid to rotate under the electrolytic conditions that the anode current density is 0.47 to 0.52A / cm<2> and the high-purity graphite is adopted as an anode, reducing the magnesium ions on the rotating aluminum liquid cathode into elemental magnesium under the electromagnetic stirring effect to be uniformly dispersed into the aluminum liquid so as to form the aluminum-magnesium alloy product, and producing CO2 gas on the anode. The alloy prepared through the method is uniform in components and contains no impurity. The production process is continuous and easy to control.

The invention discloses a device and a method for preparing porous foam metal by a metal melt inflation process. The device comprises a metal melt groove, a foaming chamber, a fluid hole, a release valve and a metal crystallizer. The middle of the metal crystallizer is provided with a high-frequency ultrasonic oscillator; and the high-frequency ultrasonic oscillator is connected with a high-frequency ultrasonic power source used for adjusting the oscillation frequency, amplitude and power of the high-frequency ultrasonic oscillator. The high-frequency ultrasonic oscillator is started, when the bubble-containing metal melt passes through the metal crystallizer, bubbles are subjected to ultrasonic oscillation for fragmentation under the action of the high-frequency ultrasonic oscillation, and a bubble is fragmented into several smaller bubbles; and the oscillation frequency and the amplitude of the high-frequency ultrasonic oscillator are adjusted, so that the fragmentation degree and the size of the bubbles meet the requirements. The bubbles formed by high-frequency ultrasonic oscillation have uniform size and distribution; and the device and the method have the advantages of simple process and low cost, and are suitable for large-scale production, promotion and application.

The invention discloses a processing and recycling method for a waste aluminum electrolytic capacitor. The processing and recycling method comprises the following steps: putting the waste aluminum electrolytic capacitor into a thermal treatment device to perform pyrolysis of nonmetal components, wherein the pyrolysis temperature is 400-600 DEG C, the pyrolysis time is 0.5-2 hours, and the pyrolysis treatment atmosphere is air; then, crushing obtained pyrolysis residues until metal components and nonmetal components are completely dissociated; screening crushed mixed particles through a screen of 0.1-0.3 mm to respectively obtain nonmetal pyrolysis residue powder and aluminum-iron metal mixed particles; performing magnetic separation on the aluminum-iron metal mixed particles and completely separating and recycling the iron metal particles and the aluminum metal particles. The processing and recycling method realizes recycling with high recovery rate and high purity of the aluminum and the iron, is clean in a processing process, does not discharge any toxic and harmful substances to an environment, has the characteristics of being simple and convenient to operate, short in flow, efficient, environment-friendly and high in recycling degree, and is suitable for large-scale industrial application.

The invention relates to L-prolinamide derivative of the general formula I, a preparation method and application of the same, belonging to the chemical field. The preparation method comprises following steps of: coupling N-Boc-L-Pro to mono terminal protecting (R,R)-1,2-cyclohexanediamine of the general formula II to obtain intermediate of the general formula III, processing the obtained intermediate by using trifluoroacetic acid to remove a Boc protecting group or by using hydrazine hydrate and ethanol to remove a mono terminal protecting group to obtain the L-prolinamide derivative of the general formula I. The L-prolinamide derivative can be used as the catalyst of the intermolecular asymmetric direct Aldol reaction, has the advantages of high efficiency, high selectivity, easy operation, recycling and the like and is suitable for large-scale industrial application. The invention further discloses a method for catalyzing the intermolecular asymmetric direct Aldol reaction by using the L-prolinamide derivative.

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 discloses a ternary CoFeCr hydrotalcite nanorod and a preparation method and application thereof. The preparation method comprises the steps: mixing cobalt nitrate, iron nitrate, chromium nitrate, urea and ammonium fluoride in water so as to prepare a precursor mixed solution, placing a substrate in the precursor mixed solution, transferring the substrate together with the precursormixed solution to an autoclave, and then performing a reacting at 110-130 DEG C for 360-600 minutes so as to prepare the ternary CoFeCr hydrotalcite nanorod on the substrate. The ternary CoFeCr hydrotalcite nanorod together with the substrate is directly used as a working electrode for electrochemical decomposition of water. Not only the ternary CoFeCr hydrotalcite nanorod has better performance of water electrolysis and oxygen evolution than transition metal oxide in the prior art, but also the preparation process is simple, fast and efficient, has low production energy consumption, low production cost, environmental protection and no pollution, and is suitable for large-scale industrial production.

The invention relates to a method of refusion refining for magnesium alloy furnace charge without the fluxing agent and its apparatus. Magnesia fused mass is refined using complex multi-refining method after preheating and drying magnesium alloy furnace charge, including the steps of: fusing furnace charge, stirring refining or (and blowing refining), forced sedimentating, filter refining, static refining, discharging and casting, accordingly the high-quality purification of fusing body is performed by efficiently eliminating all kinds of impurity and gas in the magnesium alloy furnace charge. The apparatus mostly includes crucibles, pretreatment chambers in order fixed in the crucibles, one or more filter chamber and casting chambers, each adjacent two chambers communicated by fused mass flowing channels, stirring units or (and blowing units) in the pretreatment chambers, first-order filter unit airproofed and fixed in each filter chamber. The apparatus can perform continuous complex multi-refining and casting / producing of magnesia fused mass, with greatly-improved refining quality and purified effect of magnesium alloy fused mass, while the problem that the filter apparatus is easy to be blocked in the process of filtering is solved.

The invention discloses a method for separating and purifying blue algae polysaccharide, which belongs to the technical field of biochemical separation. The method comprises the following steps of: preparing a crude extract of the blue algae polysaccharide; treating the crude extract of the blue algae polysaccharide by using a flocculating agent; performing vacuum concentration on the crude extract treated by using the flocculating agent; depositing the blue algae polysaccharide by using ethanol; and eluting a deposit and then performing vacuum drying on the deposit to obtain the blue algae polysaccharide with certain purity. The method relates uses the flocculating agent to flocculate impurities, but does not adopt the common isoelectric point, sevage method and the like to remove the impurities such as protein and the like. The method simplifies steps of the purification process, has simple operation, reduces the used amount of chemical reagents used in the preparation process, and saves resources, and the purity of the obtained polysaccharide can reach as high as 91.18 percent. Fresh or dried algae powder, even field Taihu Lake water bloom blue algae is used as a raw material, so a technical method for realizing scale utilization of algae resources is provided.