147 results about "Ferric Pyrophosphate" patented technology

The invention provides a method for producing high-purity battery pole ferric phosphate by adopting pickle liquor, which comprises the following steps: adding iron sheet or scrap iron inside a reactive tank, pouring the pickle liquor; filtering the mixture to obtain purified ferrite solution; adding the purified ferrite solution inside a catalytic reaction kettle, and adding oxidant to perform exothermal reaction; dissolving and stirring phosphate to obtain primary ferric phosphate sizing agent; separating the primary ferric phosphate sizing agent to obtain primary ferric phosphate filter mass; dissolving and stirring the filter mass to obtain primary ferric phosphate mixed solution; heating, insulating and stirring the mixture inside an insulation reaction kettle until the mixture becomes pink; inputting all the mixed solution to the insulation reaction kettle, insulating and stirring the mixed solution for a certain period of time; and separating the ferric phosphate inside the ground paste to obtain the finished product of ferric phosphate. The invention utilizes the industrial pickle liquor as the raw material of the production method, realizes the further development of the recycling economy and the green economy due to the circulation use of the industrial waste, and greatly lowers the production cost.

A stable packaged bicarbonate solution for use in dialysis treatment and for treating anemia, iron deficiency, or reducing the required dose of recombinant erythropoietin to treat anemia includes a bicarbonate solution into which ferric pyrophosphate is dissolved. The amount of ferric pyrophosphate dissolved in the bicarbonate solution is sufficient to provide a therapeutic effect for the treatment of anemia, iron deficiency or to reduce dose of recombinant erythropoietin needed to treat anemia when the bicarbonate solution is combined with other dialysis components to form a dialysate used for dialyzing a patient. The ferric pyrophosphate is stabilized in the bicarbonate solution by holding the solution in a polyolefin container or container liner, such as a high density polyethylene container or liner.

The invention discloses a carbon-cladded sodium ferric pyrophosphate material and a preparation method thereof as well application of the carbon-cladded sodium ferric pyrophosphate material serving asa sodium-ion battery positive electrode material. The carbon-cladded sodium ferric pyrophosphate material has an ordered nano-structure and the surface of the material is uniformly cladded with a carbon layer; the preparation method of the carbon-cladded sodium ferric pyrophosphate material comprises the following steps: sequentially carrying out ball milling and mixing on an organic macromolecular surfactant, a phosphorous source, a hydrocarbon type mixture, an iron source and a sodium source to obtain a precursor; putting the precursor into a protective atmosphere and calcining to obtain the carbon-cladded sodium ferric pyrophosphate material. The carbon-cladded sodium ferric pyrophosphate material has the ordered nano-structure and a large contact area with electrolyte; an ion dispersion path is short and an ion dispersion speed in a battery system is effectively improved; an electron transmission speed and the stability of the electrode material are effectively improved through aconductive carbon layer; the carbon-cladded sodium ferric pyrophosphate material is used as the sodium-ion battery positive electrode material and has excellent electrochemical performance, and is anideal sodium-ion battery positive electrode material; a preparation process is simple in technology and low in cost; large-scale production is easy to enlarge and the carbon-cladded sodium ferric pyrophosphate material has a very great application prospect.

Bioavailable iron-containing parenteral nutrition compositions are provided that are physico-chemically stable. Iron is present in the form of soluble ferric pyrophosphate. Methods of preparation and use of the compositions are provide, as well as kits.

A highly water soluble ferric pyrophosphate citrate chelate useful for treating iron deficiency contains 2% or less phosphate by weight. These chelate compositions are easily milled and / or processed into dosage forms using conventional techniques, and are expected to exhibit advantageous biocompatibility as compared to conventional soluble ferric pyrophosphates, ferric salts, ferric polysaccharide complexes and ferrous salts.

The invention discloses a nitrogen-phosphorus expansion flame retardant containing a flame retardant synergist and a preparation method thereof. The nitrogen-phosphorus expansion flame retardant containing the flame retardant synergist is characterized in that 90-99.95 percent of the nitrogen-phosphorus expansion flame retardant and 0.05-10 percent of the flame retardant synergist are evenly mixedaccording to the mass; the nitrogen-phosphorus expansion flame retardant comprises a nitrogen-phosphorus compound expansion flame retardant or / and a nitrogen-phosphorus simple substance expansion flame retardant; and the flame retardant synergist is selected from lanthanum phosphate, cerous phosphate, manganese pyrophosphate, ferric phosphate and / or ferric pyrophosphate. The nitrogen-phosphorus expansion flame retardant containing the flame retardant synergist can be suitable for anti-flaming of polyolefin, polyester or phenyl polymer, thereby overcoming the defects of low flame retardant efficiency, large addition quantity, and the like in the prior nitrogen-phosphorus expansion flame retardant, reducing the adverse effect of flame retardant property of a matrix due to the hygroscopicityof a flame retardant agent and reducing the adverse effect of mechanical property of the matrix due to the flame retardant agent with both convenience of production and use.

The invention discloses a preparation method of an infant solid beverage beneficial for sleeping and clearing heat. The purpose of the invention is to provide a preparation method of an infant solid beverage beneficial for sleeping and clearing heat. The preparation method is characterized by comprising raw materials of hawthorn powder, spina date seeds, malt flour, lily root flour, lotus nut powder, tuchahoe powder, honeysuckle powder, mulberry powder, chrysanthemum powder, fructo-oligosaccharide and / or galacto-oligosacchari, calcium carbonate, ferric pyrophosphate, zinc sulfate, vitamins A,D, B1 and B2, taurine, DHA (Volatile Organic Compounds) and white granulated sugar; and obtaining a finished product with particle size of 1.4 mm through crushing, mixing, granulating, drying and other steps. The method disclosed by the invention is mainly used for preparing the infant solid beverage beneficial for sleeping and clearing heat.

A corrosion-inhibited fire retardant composition is provided that comprises at least one ammonium polyphosphate, at least one suspending agent, at least one phosphonate selected from a group consisting of aminotri(methylenephosphonic acid), 1-hydroxyethylidene-1,1-diphosphonic acid, hexamethylenediaminetetra(methylenephosphonic acid), diethylenetriaminepenta(methylenephosphonic acid), salts thereof, and mixtures thereof and a corrosion inhibiting system. The corrosion inhibiting system is comprised of at least one corrosion inhibiting compound selected from a group consisting of azoles, insoluble ferric pyrophosphate, soluble ferric pyrophosphate, ferrous oxalate, ferric citrate, ferrous sulfate, ferric ammonium citrate, insoluble ferric orthophosphate, soluble ferric orthophosphate, ferric ammonium oxalate, ferric ammonium sulfate, ferric bromide, ferric sodium oxalate, ferric stearate, ferric sulfate, ferrous acetate, ferrous ammonium sulfate, ferrous bromide, ferrous gluconate, ferrous iodide, ferric acetate, ferric fluoroborate, ferric hydroxide, ferric oleate, ferrous fumarate, ferrous oxalate, ferrous oxide, ferric lactate, ferric resinate, and any combination thereof. Methods of making and using the same are also described. In addition, agricultural plant nutrients comprising the same are provided.

Corrosion-inhibited fire retardant compositions and methods of making and using the same are provided. The corrosion-inhibited fire retardant compositions are comprised of at least one fire retardant component, at least one biopolymer having a particle size diameter of less than about 100 microns, and a corrosion inhibiting system. The corrosion inhibiting system is comprised of at least one corrosion inhibiting compound selected from a group of compounds including azoles, insoluble ferric pyrophosphate, soluble ferric pyrophosphate, ferrous oxalate, ferric citrate, ferrous sulfate, ferric ammonium citrate, soluble ferric orthophosphate, insoluble ferric orthophosphate, ferric ammonium oxalate, ferric ammonium sulfate, ferric bromide, ferric sodium oxalate, ferric stearate, ferric sulfate, ferrous acetate, ferrous ammonium sulfate, ferrous bromide, ferrous gluconate, ferrous iodide, ferric acetate, ferric fluoroborate, ferric hydroxide, ferric oleate, ferrous fumarate, ferrous oxide, ferric lactate, ferric resinate and any combination thereof. In a specific embodiment, the corrosion-inhibited fire retardant composition includes a xanthan biopolymer.

The invention discloses a health-care food of iron zinc calcium tablets and a production method thereof. The iron zinc calcium tablets consist of chewable tablets, calcium carbonate, ferric pyrophosphate, zinc gluconate, lactose, sucrose, sorbitol, mannitol, maltodextrin, casein phosphopeptide, milk powder, fruit powder, citric acid, sodium citrate, magnesium stearate, silicon dioxide and other raw materials by parts by weight. The prepration method comprises the steps of preparing the raw materials by parts by weight, smashing, screening, weighing the raw materials, granulating, baking, mixing, tabletting and coating. The product has the effects of reinforcing spleen, promoting appetite, improving myocardial ischemia, supplementing blood and calcium, improving sleep and preventing iron deficiency anemia and other diseases, thereby being the health-care product which can not only strengthen the body, but also improve the immunity and the anti-disease ability of the human body.

The invention discloses low-temperature golden yellow metallic luster glaze and a manufacturing method thereof. The low-temperature golden yellow metallic luster glaze comprises a ferro phosphorus material and ceramic-based glaze in a mass ratio of 0.5-1:1, wherein the ferro phosphorus material consists of sodium ferric pyrophosphate and ferric phosphate or the sodium ferric pyrophosphate and a mixture of ferric oxide and aluminum phosphate; and the ceramic-based glaze comprises albite, quartz, limestone and kaolin in a weight ratio of 20-50:5-10:2-8:3-10. The low-temperature golden yellow metallic luster glaze has the advantages of a few types of raw materials, low manufacturing cost, one-time sintering at a low temperature, contribution to energy conservation and environmental protection, bright golden yellow metallic luster of the sintered product, obvious decorative effect and wide application range; and the method is particularly suitable for manufacturing ceramic wall tiles, ceramic waist lines, ceramic mosaic and the like with golden yellow appearance.

The invention discloses a fire-clearing health-care food for infants, and aims to provide a fire-clearing health-care food for infants. The health-care food is characterized by comprising the following raw materials in parts by weight: 0.5-1 part of fructus crataegi powder, 0.5-1 part of malt powder, 0.2-1 part of lily powder, 0.1-0.4 part of lotus nut powder, 0.1-0.5 part of indian buead powder, 0.2-0.5 part of honeysuckle flower powder, 0.1-0.3 part of rehmannia root, 0.2-0.5 part of chrysanthemum powder, 0.1-0.3 part of common lophatherum herb powder, 0.1-0.3 part of orange peel powder, 0.1-0.3 part of chicken gizzard membrane powder, 0.6-1.5 parts of fructo-oligosaccharide and / or galactooligosaccharide, 0.024-0.04 part of ferric pyrophosphate, 0.011-0.03 part of zinc sulfate, 0.03-0.05 part of taurine and 91-97 parts of white granulated sugar. The health-care food is mainly taken as a fire-clearing health-care food for infants.

The invention discloses a protein type solid beverage formula for reducing weight and meal replacement. The protein type solid beverage formula consists of the following raw materials in parts by weight: 2 parts of strawberry fruit powder, 5 parts of strawberry ferment powder, 5 parts of comprehensive fruit and vegetable ferment powder, 2 parts of konjac powder, 2 parts of collagen powder, 2 parts of oat dietary fibers, 2 parts of wheat oligopeptide, 20 parts of resistant dextrin, 1 part of Chinese wolfberry fruits, 2 parts of fructo-oligosaccharide, 2 parts of soybean protein powder, 2 parts of whey protein, 2 parts of inulin, 2 parts of coix seeds, 0.1 part of vitamin A, 0.1 part of vitamin D, 0.1 part of vitamin E, 0.1 part of vitamin B1, 0.1 part of vitamin B2, 0.1 part of vitamin B6, 0.2 part of vitamin C, 0.2 part of niacin, 0.2 part of folic acid, 0.3 part of calcium carbonate, 0.1 part of ferric pyrophosphate and 0.1 part of zinc gluconate. According to Diet Nutrient Reference Intake of Chinese Populations, requirements for vitamins, mineral convents and the like by low-calorie meal replacement foods are determined, the satiety time is prolonged, and the purpose of reducing weight is realized.

The invention relates to a method for extracting ferric phosphate from phosphorized waste residues. The method comprises the following steps: adding water into powdery phosphorized waste residues, and uniformly stirring; then, slowly adding concentrated hydrochloric acid into a reaction device till the white solids are fully dissolved; filtering the solution and removing undissolved substances; slowly dropwise adding sodium hydroxide solution into the filtrate, controlling the pH of the solution to 1.0-2.0, reacting for 3+ / -0.5 hours, and filtering; washing with distilled water to neutral; and drying and smashing to obtain a battery-grade ferric pyrophosphate product. According to the process of recovering and purifying ferric phosphate provided by the invention, the recovery rate of ferric phosphate reaches 90%, the content of Fe<3+> in the ferric phosphate product is greater than or equal to 29% (dihydrate), and Fe / P is equal to 0.97-1.0. According to the method provided by the invention, waste is turned to wealth, the problem that waste residues are discharged to cause the environmental pollution is solved, and the ferric phosphate product with a wide market prospect is extracted from phosphorized waste residues.

The invention discloses an instant nutritious porridge suitable for infants of 6 months old or older and a preparation process of the nutritious porridge. The instant nutritious porridge comprises a porridge body and ingredients, wherein the porridge body comprises rice, millet, corn starch, barley powder, Chinese yam powder, hawthorn powder, lotus nut starch, vitamin A, vitamin D, vitamin B1, vitamin B2, nicotinic acid, calcium carbonate, calcium hydrophosphate, zinc oxide, ferric pyrophosphate and potassium iodide, and the ingredients comprise dehydrated shredded meat, meat extract and vegetable powder. The ingredients are added according to the flavors of different products into the porridge body according to certain proportion, mixed uniformly, and packaged in bags to obtain the finished product. The product contains carbohydrate, protein, fat, various vitamins and mineral elements that are required for the infant, and the contents of the ingredients are configured with reference to the grain accessory food of the infant so as to meet the nutrient requirements for the growth and development of the infant.

The invention relates to a method for preparing ferric pyrophosphate used for a lithium ion battery by utilizing iron-bearing raffinate. The method comprises the following steps of (1) adding oxidizing agent solution in the iron-bearing raffinate, stirring, adding the raffinate to carry out multistage extraction, and washing a separated organic phase through inorganic acid to obtain ferric salt solution; and (2) taking the ferric salt solution in the step (1) as an iron source, adding a phosphorus source, stirring, adding a pH regulator to react, cooling, carrying out solid-liquid separation, washing and drying to obtain a battery-level ferric pyrophosphate powder material. According to the method, the ferric salt solution recycled from the iron-bearing raffinate is taken as the iron source to prepare ferric pyrophosphate, so that the scrap metallic iron is recycled to the greatest extent, the economic benefit is improved, the environmental pollution is reduced; the whole preparation process is greatly simplified, and the production cost is reduced.

The invention belongs to the field of foods, and particularly relates to a composition capable of enhancing immunity, a functional food capable of enhancing immunity and a preparation method of the functional food. The composition comprises the following components in parts by weight of 40-70 parts of milk powder, 0.05-2 parts of lactoferrin, 1-10 parts of bovine coloctrum, 0.1-5 parts of yeast beta-glucan, 5-20 parts of whey protein concentrate and 0.1-4 parts of ferric pyrophosphate. The functional food comprises the composition capable of enhancing immunity, a flavoring substance and a glidant. The preparation method of the functional food comprises the steps of performing screening step by step and performing premixing. According to the composition provided by the invention, stabilityconflict does not exist between the components, under the specific proportion, relative best effects can be exerted, the composition can be used for enhancing immunity, and universal problems that conventional crowds are low in immunity and poor in resistibility are solved.

The invention discloses a complementary food nutrition bag for children and a preparation method of the complementary food nutrition bag and belongs to the complementary food nutrition supplements. The complementary food nutrition bag is characterized by being composed of ethlene diamine tetraacetic acid ferric sodium salt, vitamin B1, vitamin b2, vitamin A acetate, cholecal ciferol, ferric pyrophosphate, zinc gluconate, lupeose, malt extract and resistant dextrin. The complementary food nutrition bag has the advantages and beneficial effects of reasonable matching, exact effects, clear mechanism, strong pertinence, remarkable synergic effect, simplicity in production and convenience for taking; the complementary food nutrition bag for children has no adverse effects in the aspects of color and luster, taste, stability and the like, and has no black spots, precipitate and flotage; besides, the product also can be prevented from oxidation smell and the like in short period, and the quality guarantee period can be 24 months; the complementary food nutrition bag is easily accepted by infants, and free from any preservative, essence and the like, completely conforms to the national food safety standards and does not cause any harm or toxic and side effects to the body.

The invention discloses a nutritious Chinese chestnut ultra fine powder for infant, which is made from the materials of: Chinese chestnut ultra fine powder, powdered whole milk, whole egg powder and white granulated sugar, added with the nutrition intensifying agents: calcium lactate, sodium pyrophosphate, zinc sulfate hepta, nicotinic acid, vitamin A, vitamin D, vitamin C, vitamin B1, vitamin B2, potassium iodide and tocopherol; by the process of: selecting raw materials, shucking, removing red skin, drying, crushing, ultra-fine grinding, blending, mixing the nutrition intensifying agents in proportion and stirring uniformly; adding 30% of the Chinese chestnut ultra fine powder, powdered whole milk, whole egg powder and white granulated sugar, and stirring uniformly; and adding another 70% of the the Chinese chestnut ultra fine powder, powdered whole milk, whole egg powder and white granulated sugar, stirring uniformly and packaging by vacuum. By adopting Chinese chestnut ultra fine powder, the invention reduces the particle size of the product, increases the instant soluble performance and nutrient composition utilization rate of the Chinese chestnut ultra fine powder, intensifies the nutrient composition of the Chinese chestnut ultra fine powder, and achieves the advantages of easily solved, easily digested and convenient for eating.

The invention discloses an infant-nutrition bag preparation with the effects of benefiting the intelligence and reinforcing the brain. The infant-nutrition bag preparation comprises the following materials in parts by weight: 100-120 parts of while milk powder, 30-40 parts of soybean protein powder, 60-80 parts of whey protein powder, 12-20 parts of fructooligosaccharide, 5-10 parts of honey, 0.2-0.3 part of vitamin, 0.1-0.2 part of DHA, 0.1-0.2 part of ferric pyrophosphate, 0.2-0.4 part of zinc citrate, 0.25-0.5 part of calcium carbonate, 6-9 parts of probiotic powder, 15-25 parts of walnut powder and 6-12 parts of fruit powder. The infant-nutrition bag preparation disclosed by the invention has the advantages that the components are reasonable, the mouthfeel is good, the nutrition is rich, the absorption and the digestion are easy, the development of the physique of an infant is promoted, meanwhile the effects of benefiting the intelligence and reinforcing the brain are achieved, and the development of the intelligence of the infant is effectively promoted.

The invention relates to milk and a method for preparing the milk, in particular to baby liquid state milk added with mineral elements, which belongs to the technical field of milk products. The baby liquid state milk comprises protein, fat, sugar, vitamin, mineral elements and water. The mineral elements comprise Mg, Fe, Zn, Cu, Ca, I, and Mn; wherein, the Mg can be provided by the combination of one or a plurality of Mg preparations among magnesium sulfate, magnesium chloride and magnesium citrate; the Fe can be provided by the combination of one or a plurality of Fe preparations among gluconic acid ferrous iron, green copperas, ferrous lactate, ironic citrate and ferric pyrophosphate; the Zn can be provided by the combination of one or a plurality of Zn preparations among zinc sulfate, zinc gluconate, zinc lactate and zinc butter; the Cu can be provided by bluestone; the Ca can be provided by the combination of one or a plurality of Ca preparations among milk calcium, calcium citrate, calcium phosphate, calcium chloride, calcium carbonate and calcium lactate; the I can be provided by potassium iodide; and the Mn can be provided by manganese sulfate. The invention has the advantages that the selected combination is suitable for the liquid state milk.

The invention discloses a primrose soilless culture nutrient solution and a preparation method thereof; the nutrient solution is prepared from the following raw materials in parts by weight: 50-60 parts of potassium nitrate, 30-40 parts of calcium hypophosphite, 20-30 parts of calcium nitrate tetrahydrate, 30-40 parts of diammonium hydrogen citrate, 35-45 parts of magnesium sulfate, 20-40 parts of potassium dihydrogen phosphate, 10-14 parts of ethylenediaminetetraacetic acid monosodium ferric salt, 14-16 parts of ferric pyrophosphate, 8-10 parts of ferrous sulfate, 7-9 parts of sodium tetraborate, 8-10 parts of boracic acid, 6-10 parts of zinc sulfate, 3-8 parts of potassium humate, 3-5 parts of manganese sulfate, 10-15 parts of urea, 15-20 parts of copper gluconate, 2-4 parts of sodium naphthalene acetate, 3-5 parts of gamma-polyglutamic acid, and a proper amount of water. The nutrient solution has balanced nutrition, can meet the growing demand of primrose, can make the primrose leaves invisible green, flower color bright and flower period durable after use, moreover, can improve the immunity of the primrose, and reduces the occurrence of pests and diseases.

The invention provides a method for preparing ferric pyrophosphate for a lithium battery. The method comprises the following steps: 1. crushing ferrophosphorus raw materials to obtain ferrophosphorus fine powder; 2. mixing the ferrophosphorus fine powder and an acid solution, introducing oxidative gas and filtering to obtain a solution A, wherein the acid solution is selected from one or more of sulfuric acid, hydrochloric acid or nitric acid; 3. adding a phosphorus source into the solution A to obtain a solution B, wherein the phosphorus source is selected from phosphoric acid and / or phosphate; 4. adding the solution B and an alkali liquor into a container in parallel in a stirring state, controlling the pH value of the solution in the container, keeping the pH value to be 2.0-2.5, continuously stirring to obtain slurry with ferric pyrophosphate; and 5. separating a solid phase from a mother solution in the slurry, washing and drying the solid phase to obtain the ferric pyrophosphate. Meanwhile, the invention also discloses ferric pyrophosphate prepared by the method. The method for preparing the ferric pyrophosphate for the lithium battery is simple in process and low in cost.

The invention discloses a nutrition bag preparation capable of enhancing immunity and helping digestion and applicable to infants. The preparation is prepared from raw materials in parts by weight as follows: 60-100 parts of skimmed milk powder, 20-40 parts of modified milk powder, 30-50 parts of whey protein powder, 10-16 parts of fructooligosaccharide, 0.1-0.25 parts of vitamins, 0.05-0.2 parts of ferric pyrophosphate, 0.2-0.4 parts of zinc citrate, 0.25-0.5 parts of calcium carbonate and 2-5 parts of probiotics powder. The nutrition bag preparation capable of enhancing immunity and helping digestion and applicable to the infants contains reasonable ingredients, tastes good, is easy to absorb and digest and can timely supplement the infants with protein, vitamins as well as microelements such as calcium, iron, zinc and the like and effectively enhance the immunity of the infants.

The invention discloses powder fortified with calcium applicable to the nutritional supplement of babies and a preparation method of the powder. The powder fortified with calcium comprises the following ingredients by weight percent: 3 to 9 percent of calcium carbonate, 5 to 55 percent of whole milk powder, 10 to 55 percent of concentrated whey protein, 1 percent of composite vitamin, 0.12 to 0.432 percent of ferric pyrophosphate, 0.11 to 0.414 percent of zinc lactate and 30 to 70 percent of anhydrous dextrose. By improving the ingredients and content of calcium supplementing agent, the product is rich in nutrients and convenient to eat; while the protein is supplemented, the ingestion of minerals such as calcium, iron and zinc, vitamin A, vitamin B1, vitamin B2 and vitamin D can be increased, the nutrients can be balanced, the healthy development of the baby can be promoted, compared with the product adopting ordinary calcium carbonate as the raw material, the taste is better, the calcium solubility is large, the calcium is easy to digest, and the utilization rate is high.

The invention relates to a method for carrying out original-soil greening on seawater-dipped saline and alkaline land through salt absorption agents with sugar residue paste. The salt absorption agents with the sugar residue paste are prepared from, by weight, 25-27 parts of biogas residues, 3-5 parts of bentonite, 5-7 parts of haycite, 15-17 parts of sorghum straw powder, 18-20 parts of fermented wild goose dung, 10-12 parts of fermented yellow weasel dung, 5-7 parts of the sugar residue paste, 3-5 parts of sodium hydrogen sulfate, 3-5 parts of ferric pyrophosphate, 1-3 parts of palmitic acid, 1-3 parts of amino acid salt, 0.2-0.4 part of atrazine, 0.2-0.4 part of glyphosine, 0.2-0.4 part of adjusting phosphine, 0.5-0.7 part of Chinese hawthorn leaf extract, 0.5-0.7 part of momordica charantia extract, 2-4 parts of tertiary calcium phosphate, 2 parts of starch-grafting acrylamide polymers, 0.1-0.3 part of methanohalophilus mahii, 0.1-0.3 part of bacillus coagulans, 0.1-0.3 part of brown nitrogen-fixing bacteria, 0.1-0.3 part of aspergillus oryzae and 0.1-0.3 part of trichoderma harziamum.

The invention discloses a preparation method of anhydrous ferric pyrophosphate, wherein the method includes steps of adding 110-120 parts by weight of phosphoric acid in 300 parts by weight of de-ionized water and preparing to be phosphoric acid solution; controlling the solution temperature at 50-80 DEG C, and adding 56 parts by weight of 300 meshes-100 meshes of reduced iron powder under the stirring state and reacting for 3 hours, and then adding the acquired precursor liquid in a nanoscale sand grinding machine; performing ball milling for 2 hours and acquiring turbid liquid of which grain diameter distribution D5 is 200-400 nm; spraying and drying the acquired ball mill turbid liquid at 170 DEG C, and acquiring a spherical precursor powder body; at last, calcining the acquired spherical precursor powder body in the air at 600-800 DEG C for 8 hours, and then acquiring the anhydrous ferric pyrophosphate material. As the raw material for producing the lithium iron phosphate material, the calcining process is not existed with the dewatering process of recrystallization water, thereby overcoming the shortcoming that water and carbon are formed to be water gas and the carbon content in the product is reduced; therefore, the anhydrous ferric pyrophosphate is an ideal raw material for producing lithium iron phosphate in the industry.

The invention provides multi-vitamin chewable tablets for pregnant women. The multi-vitamin chewable tablets are prepared from the following raw materials in parts by weight: 30-80 parts of vitamin A acetate, 2-8 parts of vitamin B1, 1-5 parts of vitamin B2, 1-5 parts of vitamin B6, 2-15 parts of vitamin C, 1-5 parts of vitamin D3, 1-5 parts of vitamin E, 10-15 parts of folic acid, 1-5 parts of nicotinic acid, 40-80 parts of zinc lactate, 60-80 parts of calcium carbonate, 5-18 parts of ferric pyrophosphate, 5-18 parts of selenium-enriched yeast, 10-20 parts of maltodextrin and 3-20 parts of magnesium stearate.