1561 results about "Hydroxycitric acid" patented technology

An organic-based uniprill fertilizer is provided. To produce the fertilizer, organic matter is sequentially pre-treated by first mixing it in a first grinder with a lime admixture, then adding a slurry of reagents and binders, followed by a mixture of acids. The acids can include sulfuric and phosphoric acids, in addition to nitric acid and various organic acids such as citric and fulvic acid, depending on the end requirements of the fertilizer product. Following the mixing of the pre-product with the mixture of acids and reagents, the resultant raw product is preferably processed through a second grinder. This grinding further dries, mixes and granulates the raw product. The particle size of the completed fertilizer is reduced into a flowable, user safe uniprill product that can be further ground to reduce its moisture. Further drying may be necessary for bag or bulk product, or it can be liquified by high speed blending or micro-fluidized for sprinkler or drip applications. The uniprill fertilizer comprises small, preferably microscopic particles that are homogenous in nature, in that any single particle is substantially identical in composition to all other particles of the fertilizer. Additionally, each uniprill particle contains substantially all sixteen nutriments and minerals required for the growth of healthy plants.

The present invention relates to a diagnostic agent for liver function, comprising a compound labelled with 13C at least at one specific position selected from the group consisting of the following (a) to (f): (a) galactose, glucose or xylose labelled with 13C at least at one specific position or a starch composed of glucose units labelled with 13C at least at one specific position; (b) a polar amino acid, heterocyclic amino acid, isoleucine or valine labelled with 13C at least at one specific position; (c) a carboxylic acid constituting the glycolytic pathway or the citric acid cycle, labelled with 13C at least at one specific position; (d) a fatty acid labelled with 13C at least at one specific position; (e) a glyceride labelled with 13C at least at one specific position; and (f) glycerol labelled with 13C at least at one specific position. According to the present invention, a diagnostic agent for liver function which imposes less physical burden on a subject, can give accurate test result immediately, and can be used safely without side effects is provided. The diagnostic agent of the invention is useful for evaluating the liver function of a subject at the time when the test is carried out.

The invention belongs to the technical field of industrial waste water treatment and pollution treatment, in particular to a preparation method of a citric acid modified rape straw adsorbent and an application thereof. The method comprises the following steps of: firstly washing natural rape straws, drying, crashing, sieving for standby; and then modifying the surface of the rape straws with citric acid so as to prepare the novel adsorbent citric acid modified rape straws. The prepared adsorbent is used for treating industrial waste water, and removing cationic dye and heavy metal ions form the waste water. The result of a static absorption test shows the adsorbent has excellent adsorption effect for the cationic dye and heavy metal ions. By the invention, the agriculture waste resource is recycled; and cheap and efficient novel adsorbent is obtained to be used for treating the industrial waste water. The preparation process of the adsorbent is simple, and the prepared adsorbent has low cost and excellent adsorption effect.

A water-base drilling fluid for use in drilling wells through a formation containing a shale which swells in the presence of water. The drilling fluid preferably includes: an aqueous based continuous phase, a weight material, and a shale hydration inhibition agent having the formula:H2N—R—{OR′}x—Y.[H+B−]din which R and R′ are alkylene groups having 1 to 6 carbon atom and x is a value from about 1 to about 25. The Y group should be an amine or alkoxy group, preferably a primary amine or a methoxy group. The acid H+B− is a protic acid selected from the group consisting of inorganic acids and organic acids, illustrative examples of which include: hydrochloric, hydrobromic, sulfuric, phosphoric, nitric, boric, perchloric, formic, acetic, halogenated acetic, propionic, butyric, maleic, fumeric, glycolic, lactic, citric and combinations of these. The shale hydration inhibition agent should be present in sufficient concentration to reduce the swelling of the shale. Also inclusive of the present invention is a method of reducing the swelling of shale clay encountered during the drilling of a subterranean well, the method comprising circulating in the well a water-base drilling fluid formulated in accordance with the present invention.

The invention discloses a water culture nutrient solution prescription of a lettuce and a preparation method of the water culture nutrient solution prescription, and belongs to the technical field of plant soilless culture of the agricultural science. The nutrient solution prescription of the lettuce comprises the following components: a fertilizer A composed of 584.23g / T of calcium nitrate, 421.34g / T of potassium nitrate and 47.8g / T of ammonium nitrate; a fertilizer B composed of 182.4g / T of monopotassium phosphate and, 256.23g / T of magnesium sulfate; a fertilizer C composed of 16.8g / T of FeEDTA (Ethylene Diamine Tetraacetic Acid), 3g / T of boric acid, 2g / T of manganese sulfate, 0.25g / T of zinc sulfate, 0.85g / T of copper sulfate, and 0.38g / T of ammonium molybdate; hormone composed of 0.1g / T indolebutyric acid of or 0.1g / T of naphthylacetic acid; a bactericide composed of 15g / T of carbendazim; and nutrient solution pH (Potential Of Hydrogen) adjusting acid composed of 200ml / T of phosphoric acid or 150g / T of citric acid. The prescription is nutritionally balanced, so that the demand of the lettuce to nutrition can be met, the amount of used nutrient elements is decreased at the same time, the output of the lettuce is increased, and the fertilizers are saved; and the prescription effectively decreases the contents of nitrates in the lettuce under the water culture, improves the quality of the lettuce, enables the simplification of the complicated processes in preparation based on the demand of the actual operation, and is suitable for being used for meeting the requirements of industrialization production.

The invention discloses a preparation method of a citric acid fermentation solution, which comprises the steps of: (1) mixing dry corn powder with water to form paste, adding amylase into the paste and then heating the paste, conducting spraying liquefaction by one time on the paste at the temperature ranging from 92 DEG C to 98 DEG C and then flash evaporation by one time, lowering the temperature to 88 DEG C to 90 DEG C and maintaining the liquefaction for 90min to 120min to obtain liquefied solution; (2) taking 5 percent to 15 percent of the liquefied solution obtained in the step (1), putting the liquefied solution into a seed tank, adding a nitrogen source, heating and sterilizing, maintaining for 20min to 30min, then lowering the temperature to 36 DEG C, and inoculating the obtained mixture into aspergillus niger strains for strain culture; (3) taking 5 percent to 15 percent of the liquefied solution obtained in the step (1), putting the liquefied solution into a fermenter; (4) taking the rest of the liquefied solution obtained in the step (1) for solid-liquid separation to obtain liquefaction clear liquid, putting the obtained liquefaction clear liquid into the fermenter, adding a nitrogen source, raising the temperature to 80 DEG C to 90 DEG C by heating, sterilizing, maintaining for 5min to 10min, lower the temperature to 38 DEG C, and leading the substances in the seed tank obtained in the step (2) into the fermenter; and (5) conducting solid-liquid separation to obtain the citric acid fermentation solution after ferment. The preparation method has the advantages of simple technique and low production cost.

An orally or parenterally administered composition for reducing the storage of lipids in a human, the composition comprising: an effective amount of hydroxycitric acid; an effective amount of carnitine; an effective amount of biotin; an effective amount of one or more gluconeogenic substrates selected from the group consisting of: aspartate, lactate, glycerol, and a gluconeogenic amino acid or alphaketo analogue thereof; an effective amount of eicosapentanoic acid; and an effective amount of one or more ingredients selected from the group consisting of: medium chain triglycerides (MCT) with fatty acid backbones containing 6 to 14 carbon atoms or their individual fatty acid analogues or metabolic precursors, sesame seeds or derivative products, sesamin and / or its epimer episesamin, caffeine, forskolin, 7-keto dehydroepiandrosterone (7-keto DHEA), green tea extract containing epigallocatechingallate (EGCG), capsaicum, and 5-hydroxytryptophan (5-HTP). The supplement may also be combined with a food, beverage, condiment, spice or salad dressing base to provide a food, beverage, condiment, spice or salad dressing product designed to reduce lipid storage.

The invention discloses a production method for persimmon wine to remove acerbity, which comprises the following procedures: (1) selecting fruits, cleaning and beating; (2) protecting the color; (3) enzymolysising; (4) removing acerbity and clarifying; (5) adjusting ingredient; (6) fermenting; (7) ageing; (8) filtering, filling in bottles and sterilizing; (9) stocking, wherein removing acerbity and clarifying is completed via charging 0.3-0.6g gelatin into one kilogram persimmon juice, standing for 30-40 minutes, clarifying and filtering. The invention protects the color of persimmon juice and reduces oxidation by adding ascorbic acid and citrate, applies gelatin to remove acerbity and clarify, which can effectively remove acerbity and suspended granules in persimmon juice and enable persimmon wine without acerbity and to be easily clarified,) and employs brewing dry yeast to ferment at higher temperature, which has short ferment period. The persimmon wine is clear, transparent, lucidus and free of sediment, which has typical style, good taste, pure flavour, coordinated alcohol and acerbity, full wine body, tasty, good aftertaste, no objectionable odour, fresh persimmon flavour and wine flavour.

The invention provides a method for preparing a reforming catalyst. The catalyst comprises the following active components calculated on the basis of the weight of a dry-basis alumina carrier: 0.01 to 2.0 percent of platinum group metals, 0.01 to 3.0 percent of VIIB group metals, 0.01 to 2.0 percent of third metal components and 0.1 to 5.0 percent of halogen. The third metal components are selected from rare earth elements or IIIA, IVA or VA group metals; the active components are introduced into the alumina carrier through fractional impregnation or co-impregnation, wherein impregnation liquid prepared from platinum group metals introduced into the carrier contains dispersant; the dispersant is selected from C1-C3 alcohol, organic acid, nitrogen-containing compounds or a mixture thereof; and the organic acid is formic acid, oxalic acid, tartaric acid, citric acid or acrylic acid. The reforming catalyst prepared by the method has the advantages of high activity stability and aromatic selectivity.

The invention relates to the technical field of foods, in particular to a steamed egg cake and simultaneously discloses a preparation method of the steamed egg cake. The steamed egg cake is prepared from the following raw materials in parts by weight: 55-65 parts of low-gluten wheat flour, 30-40 parts of white granulated sugar, 40-55 parts of egg, 8-12 parts of edible vegetable oil, 7-15 parts of edible glucose, 7-11 parts of glucose syrup, 16-24 parts of modified starch, 0.3-0.8 part of edible salt, 1-3 parts of sorbitol, 4-6 parts of glycerol, 0.2-0.4 part of glycerin monostearate, 0.5-1.5 parts of baking powder, 0.1-0.4 part of soda powder, 0.7-1.3 parts of potassium sorbate, 0.02-0.05 part of sodium dehydroacetate, 0.15-0.35 part of edible citric acid and 0.05-0.15 part of edible essence. The steamed egg cake provided by the invention keeps the most original and fresh taste of the food, is fine in cake texture, soft in texture, rich in elasticity, soft in mouth feeling and rich in nutrition and is suitable for both the old and the young.

The invention discloses a plant foliar fertilizer which comprises the following chemical fertilizer raw materials: 30 urea containing 50% of K2O, 15 calcium superphosphate containing more than 15% of P2O5, 20 potassium sulfate containing 50% of K2O, 1 magnesium sulfate, 0.6 ferrous sulphate, 1 zinc sulfate, 20 ammonium sulfate containing 21% of N, 0.5 manganese sulfate, 0.5 ammonium molybdate, 0.1 sodium borate, 0.5 citric acid, 0.5 ammonia carboxyl mixture, 0.5 wetting agent and 0.1 hydrogen peroxide. The plant foliar fertilizer has the advantages of no pollution, lodging-resistant property, freezing resistance, disease and pest resistance, low cost and good effect, and can improve the yield of crops and the quality of products.

The invention provides a foliar fertilizer specially used for Chinese gooseberries, which has the functions of cold resistance and consists of the following raw materials according to weight percentage: 0.1 to 8 percent of DMSO, 0.05 to 5 percent of trimethylene glycol, 0.05 to 5 percent of salicylic acid, 0.05 to 2 percent of compound ammonium nitrate, 1 to 15 percent of humic acid, 0.5 to 10 percent of chitosan, 1 to 10 percent of citric acid, 2 to 15 percent of urea, 1 to 10 percent of borax, 1 to 20 percent of zinc sulfate, 0.5 to 10 percent of ferrous sulfate, 0.05 to 5 percent of ammonium molybdate, 1 to 15 percent of manganese sulfate, 0.1 to 2 percent of SDBS and 35 to 80 percent of water. The foliar fertilizer has obvious effects of enhancing the cold resistance of the Chinese gooseberries, coordinating the nutrient balance in plant corpus, promoting the growth, increasing the output and improving the quality.

The liquid fertilizer contains several nutritious elements and is compounded with urea, potassium nitrate, ferrous sulfate, zinc sulfate, magnesium sulfate, manganese sulfate, boric acid, potassium dihydrogen phosphate, calcium nitrate, copper sulfate, citric acid and water. It has less pollution of soil and underground water, can regulate the balance between the nutritious elements inside tree body and may be produced in simple process, at low cost and high production efficiency.

The invention discloses an ion nutritional liquid fertilizer and a preparation method thereof. The fertilizer comprises the following components by weight parts: 15-35 parts of potassium hydroxide, 5-15 parts of germanium dioxide, 1-5 parts of sodium selenite or sodium selenate, 5-15 parts of zinc acetate or zinc sulfate, 1-5 parts of chromic chloride, 2-8 parts of ammonium metavanadate, 15-40 parts of organic acid, 20-50 parts of amino acid, 10-20 parts of boric acid, 2-10 parts of urea and 500-900 parts of water, wherein the organic acid is citric acid or acetic acid and the amino acid is compound amino acid or monomer amino acid. The preparation method comprises the following steps of: taking the components of the fertilizer by weight parts; dissolving germanium dioxide into the potassium hydroxide; adding the organic acid, and then performing acidizing chelation reaction for 5-10 hours; adding the sodium selenite, zinc acetate, amino acid, boric acid, chromic chloride, ammonium metavanadate, urea and water; reacting for 5-10 hours; and filtering and removing slag, thereby obtaining the ion nutritional liquid fertilizer.

The invention discloses nutritional yolk milk pudding and a preparation method thereof. The requirements of consumers who are glad to eat jelly foods are met, and the disadvantages that the conventional jelly food in which jelly is taken as a main ingredient has no nutrient components and is harmful to the physical health of eaters are overcome. The nutritional yolk milk pudding consists of milk, yolk, compound food gum, citric acid, gardenia yellow pigment and yolk essence according to the corresponding weight proportion. The production method comprises the following steps of: steaming the yolk, adding a small amount of milk, and mashing to obtain slurry; adding the milk into gum powder and powdered sugar and boiling to obtain a gum solution; and adding an obtained yolk liquid, the pigment, the essence and the citric acid into the hot gum solution, filling, sealing, sterilizing, and cooling to obtain the nutritional yolk milk pudding. The invention has the advantages that: the food gum is taken as a carrier, the milk and the yolk are added, and a jelly food with rich nutrition is provided; nutritional and health-care functions of the milk and the yolk are applied to the production of the jelly, so that the characteristic of no nutrition of the jelly is improved; the product can be eaten by crowds of various ages such as children, adults, elders and the like; and good flavor and quality of the product in shelf life are ensured by a proper process.

The invention belongs to the field of daily chemical products, and particularly relates to an efficient laundry detergent and a preparation method thereof. The efficient laundry detergent comprises, in weight percent, 5-20% of sodium ethoxylated alkyl sulfate with the mass concentration of 70%, 3-15% of linear alkyl benzene sulfonic acid, 3-6% of fatty alcohol-polyoxyethylene ether, 3-8% of cocamidopropyl betaine with the mass concentration of 35%, 3-10% of potassium laurate water solution with the mass concentration of 17%, 3-10% of potassium oleate water solution with the mass concentrationof 5%, 1-10% of sodium hydroxide, 0.1-2% of compound enzyme, 0.05-0.2% of preservative, 0.1-0.5% of ethylene diamine tetraacetic acid, 0.05-0.5% of citric acid, 0.5-3% of sodium chloride, 0.15-0.5% ofessence and the balance deionized water. The efficient laundry detergent is high in antibacterial and stain removal ability and environmentally friendly and has fewer bubbles, and energy, time and water are saved.

The invention provides a novel synthesis method for pimavanserin. The method comprises the steps that a compound formula (1a) is adopted as a raw material for preparing an active urea compound formula (1) and then subjected to a reaction with a compound formula (2) under an alkaline system to obtain a pimavanserin free alkali formula (3), and then pimavanserin free alkali forms a salt with tartaric acid to obtain a pimavanserin half tartrate formula (4). The method is simple in technological path, low in cost and suitable for industrial production. The formula is shown in the description, wherein HmA is the general formula of m-basic acid, HnA is the general formula of n-basic acid, m and n are 1 or 2 or 3, and the m-basic acid and the n-basic acid are selected from sulfuric acid, hydrochloric acid, phosphoric acid, p-toluenesulfonic acid, benzenesulfonic acid, methanesulfonic acid, methanoic acid, acetic acid, trifluoroacetic acid, oxalic acid, citric acid or tartaric acid.

Procyanidin, optionally combined with hydroxycitric acid, is used in a method for the reduction of appetite in a mammal. Preferably procyanidin is administered to the mammal in a dosage of between 0.5 and 100 mg per kg bodyweight. Also shown is a process for the manufacture of an appetite reducing composition.

The invention discloses a fresh flower preservative, which comprises the following components in percentage by weight: 0.5 to 4.0 percent of sucrose, 0.01 to 0.05 percent of 8-hydroxyquinoline sulfate, 0.001 to 0.004 percent of 1-methyl cyclopropene, 0.0005 to 0.002 percent of gibberellin, 0.01 to 0.06 percent of calcium nitrate, 0.05 to 0.3 percent of garlic extract, 0.05 to 0.2 percent of oliveleaf extract, 0.03 to 0.15 percent of citric acid, 0.001 to 0.004 percent of 6-benzylaminopurine, and the balance of water. The invention also discloses a preparation method of the fresh flower preservative. The novel biological preservative (carnosine) is blended with the traditional additive, so that the defects of the conventional fresh flower preservative are overcome; the degradability advantage of the biological preservative is used; the fresh flower preservative is a product which is convenient to use and has good fresh keeping effect and no toxic hazard effect; and the fresh flower preservative meets the requirements of customers on spiritual civilization, and a technical scheme and a product are provided for solving the problem of difficulty in keeping flowers fresh.

The invention relates to an extraction technology of natural pigment, in particular to a method for extracting purple sweet potato anthocyanin. The method comprises the following steps of: grinding purple sweet potatoes into powder and adding cellulase to carry out enzymolysis on the purple sweet potato powder; adding citric acid to substances subjected to the enzymolysis to carry out extraction;filtering the extract obtained in the extraction step through macroporous absorbing resin, eluting the macroporous absorbing resin which adsorbs purple sweet potato anthocyanin by using eluent and condensing the purple sweet potato anthocyanin subjected to the eluting; and carrying out spray drying on the condensed purple sweet potato anthocyanin pigment obtained in the purification step to obtain final products and detecting the quality of the final products. The purple sweet potato anthocyanin extracted by the method has the advantages of excellent quality, less impurity content, stable property and long shelf life, the number of recycling times of the macroporous absorbing resin is increased, and the production efficiency is improved.

The invention discloses a blocking remover for a reservoir of an oil well. The blocking remover is applied to the technical field of oil extraction in an oil field, comprises an agent A and an agent B, and is characterized in that the weight percentage of the agent A is 25-35%; the weight percentage of the agent B is 65-75%; the agent A comprises the following components by weight: 45-50% of petroleum mixed xylene, 1-2% of nonyl phenol polyoxyethylene (4) ether, and the balance of 0# diesel oil; the agent B comprises the following components by weight: 6-10% of glacial acetic acid or sulfamic acid, 2-2.5% of ammonium bifluoride, 2% of ammonium chloride, 1-2% of citric acid, 1.5-2% of corrosion inhibitor 7801, 3-5% of tertiary butanol, 0.5-1% of octyl phenol polyoxyethylene (10) ether and the balance of water. The blocking remover has the following effects that: the agent A and the agent B are respectively prepared so as to be beneficial to storing the blocking remover for a long time, the agent A of the blocking remover has strong dissolving capacity on crude oil heavy components, such as wax colloid asphalt, and the washing oil efficiency on oil sand is more than 90%. The dissolving rate of the agent B of the blocking remover on carbonate is more than 80%, and the corrosion speed on N80 steel is low and is smaller than 2 g / m<2>.h.

The invention provides a fabric detergent with colour-preserving function and preparation method thereof. The detergent contains sodium fatty alcohol ether sulphate, laurylamide propyl betaine, alkyl glucoside, fatty alcohol polyoxyethylene (9) ether, sodium alpha-olefin sulphonate, 3-methooxyl-3-methyl-1-butyl alcohol, 1-vinyl pyrrolidone, 1-vinyl copolymer, sodium chloride, 1, 2-benzisothiazolin-3-one, essence, citric acid monohydrate and deionized water. The invention obtain favourable detergency in clothing washing process while realizing colour-preserving effect; the detergent is environmentally friendly, cleaning and colour-preserving are completed in one step, the detergent is non-toxic and non-irritant, and resource is saved.

The invention provides a preparing method of purple corn cyanidin, using purple corn plant as material, first hydrolysis of material by cellulase, regulating pH value by citric acid in the hydrolysis process; then leaching by adding water and / or alcohol, or alcohol water solution in acidic environment which maintaining by citric acid leaching system; separating the leached material and collecting extracting solution; condensing the extracting solution as required to get purple corn cyanidin extracting solution; and, controlling temperature lower than 70 DEG C in whole manufacture process. Adding beta-cyclodextrin or maltodextrin, spray drying to get microcapsule product containing purple corn cyanidin. By using the method of this invention, purple corn cyanidin has high extractability, and obtained products at least contain more than six kinds of anthocyanin or derivant components thereof.

The invention relates to the technical field of beverage production, in particular to a passion fruit beverage and a preparation method thereof. The passion fruit beverage is prepared from the following components: 20 to 40 parts of passion fruit juice, 5 to 10 parts of Dendrobium officinale juice, 5 to 10 parts of juicy peach juice, 5 to 10 parts of grapefruit juice, 5 to 10 parts of grenadine juice, 5 to 10 parts of citric acid, 1 to 2 parts of a stabilizer and 100 parts of purified water. The passion fruit beverage prepared by the preparation method of the passion fruit beverage disclosed by the invention is formed by taking the passion fruit juice as a main raw material and mixing the Dendrobium officinale juice, the juicy peach juice, the grapefruit juice and the grenadine juice as well as the additives such as the citric acid and the stabilizer with the water, so that the passion fruit beverage is nutrient-rich, good in taste and strong in flavor and has the effects of relieving a cough and moistening the lung as well as clearing heat and removing toxicity; moreover, in cooperation with the various fruits, the health care effects, for passion fruit, of diminishing inflammation and relieving pain, promoting blood circulation and improving the health, reducing lipid and blood pressure, enriching yin and nourishing kidney, refreshing oneself and dispelling the effects of alcohol, removing fatigue, eliminating toxin and beautifying skin, strengthening immunity and the like can be effectively played.

A process for extracting corn embyro oil and recovering protein includes immersing corn embryo in hot solution of citric acid, dripdrying, adding water, grinidng, and acidic proteinase and cellulase, enzymolyzing, centrifugal separating to obtain corn embryo oil, mixing the immersing liquid with separated liquid, nano-filter, vacuum concentrating, and spray drying to obtain protein.

An acid-decreasing yeast (Issatchenkia orientalis)xlc6 is prepared by separating it from red bayberry pulp, citric acid-alcohol fermenting and degrading alcohol from citric acid. The acid-decreasing total is above 90% and can be used to ferment fruit wine.

The invention relates to a method of raising zero-valent iron chromium removal catalytic reduction activity in neutral condition, characterized in that the electrolyte with 0.1 to 0.5 mol ferrous sulfate, 0.3 to 0.6 mol boric acid, 0.4 to 0.7 mol ammonium sulfate, 0.003 to 0.006 mol saccharin, 0.003 to 0.006 mol ascorbic acid, 0.002 to 0.004 mol sodium dodecyl sulfate per litre is deposited. Add the produced zero-valent iron into the solution with Cr (VI) in. Oxalic acid, citric acid, salicylic acid, tartaric acid or humic acid can also be added into the solution. The Ph of the solution is adjusted to 6.5 to 8.0 and the Cr (VI) content in the solution reduces remarkably. The method has the advantages of simple preparation technology, convenient operation and low cost. The produced zero-valent iron has a diameter less than 50 nm and is of uniform granularity and high catalytic activity. With 2.2 times chromium removal efficiency of ordinary methods, the method of raising zero-valent iron chromium removal catalytic reduction activity in neutral condition has a promising application prospect in remedying polluted soil and sewage.

The invention is a method for producing phosphoric acid and soluble potassium salt by phosphorus ore and potash feldspar, characterized in that, the method comprises: selecting phosphorus ore containing P2O5 15-30% and potash feldspar containing K2O 10-18% to mix with coke; crushing, ball milling, balling by adding water and drying; calcining for 10-30 minutes under temperature of 1100-1400DEG C; then soaking the calcined product in 1-5% citric acid solution for 12 hours, wherein, the soaking temperature is between room temperature and 60 DEG C; crystallizing and purifying the separated filtering solution; obtaining the soluble potassium salt; P2O5 in the phosphorus ore is reduced into phosphor vapor to be volatilized, the phosphor vapor above the material layer can be oxidized into P2O5 gas by the air introduced into the furnace, in the hydration apparatus, P2O5 gas can be absorbed to obtain the phosphoric acid. the invention solves the problems of waste slag and waste gas emissions during producing phosphoric acid, also alleviates the existing state that in our country, the soluble kalium resources are depended on importation, the method of the invention is economical and environment-protecting.

The invention provides a preparation method of stable water-soluble niobium and tantalum precursor, which comprises using pentoxide of tantalum or niobium as raw material, mixing columbium pentachloride or ttantalum pentachloride with potassium hydroxide or sodium hydroxide, grinding homogeneously, carrying out incandesce reacting 2-4 hours at 400-550 deg. C, obtaining fusing agent of potassium (sodium) niobate or potassium (sodium) tantalite, dissolving the fluxing agent into deionized water, filtering the solution till the solution shows strong acidity (pH<2), so that the niobium or tantalum in the solution can be fully precipitated in the form of niobic acid or tantalic acid. Finally charging right amount of citric acid water solution into columbic acid or charging right amount of oxalic acid into tantalic acid deposition, thus obtaining water-soluble niobium precursor or oxalate aqueous solution of tantalum.

The invention discloses a method for preparing poly-aniline composite ultra-filtration film by in-situ polymerization, belonging to the preparation technique of ultra-filtration composite film. The method process comprises that under the temperature of 20 to 25 DEG C, citric acid, camphor sulfonic acid or hydrochloric acid is added into dodecyl benzene sulfonic acid sodium solution; after the pH value of the solution is adjusted, aniline is added into the solution; after the solution is uniformly mixed, polysulfone membrane is then added into the solution and the solution is then mixed for 4 to 6 hours under the temperature of 20 to 25 DEG C and then for 2 hours under the temperature of 0 to 5 DEG C; water solution of ammonium persulfate with a certain quantity is then added into the solution, and the solution is then mixed for a plurality of minutes under the temperature of 0 to 5 DEG C to complete the reaction. The finished poly-aniline composite ultra-filtration film is gained by a series of cleaning of the prepared poly-aniline composite ultra-filtration film. The method of the invention is simple and has easy operation; the surface of the prepared poly-aniline composite ultra-filtration film is densely and uniformly covered by nano-fibre-shaped polyaniline; the interception performance and the hydrophilicity performance of the poly-aniline composite ultra-filtration film are greatly improved compared with basic films and can be adjusted by controlling the film preparation reaction time.