Abstract: A novel crystalline aluminophosphate of the molecular sieve type, denominated AlPO.sub.4 -34, is prepared by hydrothermal synthesis from reactive sources of aluminum and phosphorus and an organic templating agent.

Abstract: In the production of suspension fertilizers the addition of an additive comprising lignosulfonate to the wet-process acid prior to the ammoniation step prevents severe thickening of the suspension during its formation, which severe thickening is normally associated with in situ mass crystallization of monoammonium phosphate and which mass crystallization results in (1) the total prevention of further ammoniation of said acid or, at the very least, extremely slow further ammoniation thereof, and/or (2) excessive ammonia losses. Also, addition of said lignosulfonate to the acid prevents the formation of metallic impurity gel-like compounds which cause extremely high viscosities, nonpourability, and complete destruction of fluidity.

Abstract: A process for growing crystals of berlinite, comprises the steps of:(a) preparing in an organic solvent an organoaluminum phosphate organogel, which organogel is free of OH in an amount sufficient to form species of aluminum hydroxide;(b) heating the thus-prepared organoaluminum phosphate organogel in an organic solvent at a temperature sufficient to slowly and continuously remove water from the organoaluminum phosphate organogel and to cause precipitation and growth of berlinite crystals and(c) recovering the thus-produced berlinite crystals carried out in the presence of a dopant comprising a Group IVB metal compound.

Abstract: Crystalline sodium/aluminum acid phosphates having the formula:Na.sub.a Al.sub.b H.sub.c (PO.sub.4).sub.d.n H.sub.2 Owherein a ranges from 0.6 to 3.3, b ranges from 1.8 to 3.3, c ranges from 12 to 16, d ranges from 7 to 9, and n ranges from 0 to 5, with the proviso that a+3b+c=3d, and especially the compound NaAl.sub.3 H.sub.14 (PO.sub.4).sub.8.4H.sub.2 O, are prepared by coating and drying an atomized precursor solution of stoichiometrically desired acid phosphate on inert solid particles comprising a fluidized bed.

Abstract: A process is provided for working up dusts which have been precipitated electrostatically from the gas mixture composed essentially of carbon monoxide and phosphorus vapor produced in the electrothermal production of yellow phosphorus, which process comprises converting the dusts into a calcinate at 300.degree. to 800.degree. C. under oxidizing conditions in a first step, leaching the calcinate with phosphoric acid in a second step, adjusting the pH of the solution in phosphoric acid to 0 to 1.5 with sodium hydroxide solution in a third step, precipitating the sulfides of lead, copper and cadmium from the partially neutralized solution in phosphoric acid by adding sulfide and filtering them off in a fourth step, adjusting the pH of the filtered, partially neutralized solution in phosphoric acid to about 1.5 to 5.

Abstract: An improved method for synthesis of improved silicoaluminophosphate SAPO-37 is provided. The method comprises (1) preparing a two-phase reaction mixture containing particular components and comprising both a liquid organic phase and a liquid aqueous phase; (2) heating the reaction mixture at a rate of from 5.degree. C. to 200.degree. C. per hour to a temperature of from 80.degree. C. to 200.degree. C.; agitating the reaction mixture in a manner sufficient to intimately admix said liquid organic and aqueous phases with each other; (4) once nucleation of the silicoaluminophosphate occurs, heating the agitated reaction mixture at rate of from 5.degree. C. to 200.degree. C. per hour to a temperature of from 100.degree. C. to 300.degree. C.; (5) maintaining the agitated reaction mixture at a temperature of from 100.degree. C. to 300.degree. C. and a pH of from 2 to 9 until crystals of the desired silicoaluminophosphate are formed; and (6) recovering silicoaluminophosphate material from the reaction mixture.

Abstract: Calcium phosphate minerals are formed by using highly concentrated phosphoric acid in conjunction with a calcium source, normaly as carbonate or a combination of carbonate and hydroxide, optimally in conjunction with calcium phosphate crystals and additional base to neutralize the phosphoric acid. Protein may be optionally added. The resulting product is readily formed and then sets to a hard, stable, workable shaped object.

Abstract: A homogeneous, particulate mixture of alkali metal pyrophosphates and tripolyphosphates is prepared by flash drying an aqueous solution of alkali metal orthophosphates having an alkali metal to phosphorus mole ratio in the range of 5:3 to 6:3, and calcining the resultant dried particles. Preferably, the alkali metal is sodium and the orthophosphate solution is adjusted to provide a major proportion of sodium pyrophosphate and a minor proportion of sodium tripolyphosphate in the final product.

Abstract: Non-zeolitic molecular sieves are prepared by contacting a body of alumina or silica-alumina (optionally containing reactive sources of phosphorus pentoxide and/or other elements desired in the non-zeolitic molecular sieve) with a liquid reaction mixture containing a reactive source of phosphorus pentoxide (and optionally reactive sources of silica and/or other elements desired in the non-zeolitic molecular sieve), and an organic templating agent, thereby causing the body to react with the liquid reaction mixture and to form crystals of the non-zeolitic molecular sieve within the body.

Abstract: Calcium phosphates useful as bone substitute material or for the manufacture of prosthetic devices have been prepared from calcium hydroxyapatite material which has a uniformly permeable microporous structure characterized by a substantially uniform pore volume in the range from about 10 to about 90% and by a pronounced three-dimensional fenestrate structure corresponding to the microstructure of the porous carbonate echinoderm or scleractinian coral skeletal material of marine life by reacting said calcium hydroxyapatite material which has a calcium to phosphorus atomic ratio of about 1.

Abstract: A fast-dissolving, non-caking, food grade sodium tripolyphosphate is produced by spraying into a spray dryer an aqueous sodium orthophosphate feed liquor having an Na.sub.2 O:P.sub.2 O.sub.5 ratio of from about 1.60 to about 1.67 containing potassium hydroxide or a soluble potassium salt in amounts to yield about 0.4% to 0.8% by weight potassium in the final product, heating the feed to at least 440.degree. C. to form sodium tripolyphosphate, cooling the sodium tripolyphosphate and adding to it at least about 1% by weight moisture.

Abstract: A method of producing fluorapatite wherein predetermined amounts of calcium monohydrogen phosphate, calcium carbonate, and calcium fluoride are weighed, subjected to a mechanochemical action, and caused to react with one another in water. With this method, a fluorapatite having a uniform composition can be obtained without the accompaniment of by-products. A moisture sensitive resistor of the present invention can be obtained by sintering the fluorapatite produced in accordance with this method. This moisture sensitive resistor has a sufficiently low resistance corresponding to a humidity, and has substantially no hysteresis.

Abstract: A composition of matter in particulate, crystalline form. The composition comprises a hydrate-forming phosphate selected from the group consisting of sodium tripolyphosphate, sodium pyrophosphate and trisodium phosphate, between about 0.1% by weight and about 23% by weight added water in the form of water of hydration said water containing in solution sufficient surfactant to provide the composition from about 0.20 ppm and about 125 ppm of a surfactant. Methods for preparing such compositions are also disclosed.

Abstract: Preparation of an absorbent quantitative test device in the form of a flat patch. When placed on the skin of a subject, the device collects a fixed volume of sweat. It is particularly intended to be used in screen testing for cystic fibrosis by measuring the chloride level in sweat and providing a visual indication when the level is in excess of a predetermined concentration. A fill tab indicator undergoes a color change when the fixed volume of sweat has been collected signifying completion of the test. The device includes two concentric circular reaction areas of chemically treated absorbent paper or the like. The sweat sample is introduced into the device at the center of the first or inner circular reaction area which contains a chemical composition capable of reacting with all chloride in the sweat sample below a predetermined concentration value to screen out that amount of chloride.

Abstract: Methods of producing monocalcium phosphate and products created therefrom are provided. The method includes the steps of mixing phosphoric acid and water with brown mud. Preferably, the phosphoric acid is added to water so that it comprises approximately 3% to about 50% of the phosphoric acid/water mixture by weight, and the water comprises approximately 50% to about 97% of the phosphoric acid/water mixture by weight. The brown mud is added to the phosphoric acid/water mixture in a weight ratio of approximately 1:1 to about 1:3. The method of the present invention results in improved monocalcium phosphate products.

Abstract: The present invention relates to a process for preparing a calcium-phosphorus-apatite, essentially characterized by admixing a single solvent of water or an organic solvent compatible with water or a mixed solvent of water with an organic solvent compatible with water with calcium and phosphorus compounds soluble in said single or mixed solvent to prepare a raw material solution, and atomizing the raw material solution into a flame or a heating zone for effecting a thermal decomposition reaction thereof to form a calcium-phosphorus-apatite; a calcium-phosphorus-apatite obtained by the process and having novel characteristics; and the use of the calcium-phosphorus-apatite as a chromatographic packing material.

Abstract: A method of continuously producing ammonium polyphosphate by the reaction of urea and polyphosphoric acid, over a wide range of molecular weights, in a pre-mix slurry, under controlled temperature of about 315.degree.+/-15.degree. C. The slurry is reacted on a hot, continuously moving surface and forms ammonium polyphosphate in an ammonia atmosphere. Preferably, the pre-mixed slurry is added to a screw-type extruder, where the material comes in contact with the ammonia along the preheated moving surfaces of the extruder. The ammonium polyphosphate is scraped from the extrusion screw into a container with minimum handling. The material can be ground to a finer consistency if desired.

Abstract: A fluid catalytic cracking (FCC) catalyst comprising a microporous crystalline multi-compositional, multiphase composite of SAPO-37 molecular sieve as a phase thereof in contiguous relationship with a different microporous faujasitic crystalline molecular sieve as another phase thereof. The invention encompasses processes for making the catalyst by hydrothermal crystallization and using the novel catalyst for fluid catalytic cracking (FCC) applications.

Abstract: The rate of reaction of alkali metal acid pyrophosphate leavening acids can be reduced significantly while still providing a leavening system which will proof by co-milling the alkali metal pyrophosphate with an oxide or hydroxide of an alkaline earth metal such as calcium or magnesium followed by heat treating to co-milled product. The combination of the co-milling and the heat treatment significantly reduces the rate of reaction of the alkali metal acid pyrophosphate leavening acid at room temperature.The reaction rate can also be lowered by blending calcium hydroxide with a premilled SAPP which was heat treated in the absence of additional moisture subsequent to milling and prior to calcium hydroxide addition and subsequently heat treating the composition.The leavening acid compositions of the invention find particular use inrefrigerated canned doughs.

Abstract: A homogeneous, particulate mixture of alkali metal pyrophosphates and tripolyphosphates is prepared by flash drying an aqueous solution of alkali metal orthophosphates having an alkali metal to phosphorus mole ratio in the range of 5:3 to 6:3, and calcining the resultant dried particles. Preferably, the alkali metal is sodium and the orthophosphate solution is adjusted to provide a major proportion of sodium pyrphosphate and a minor proportion of sodium tripolyphosphate in the final product.

Abstract: High absorbtivity sodium tripolyphosphate is prepared by moisturizing the anhydrous orthophosphate particles produced by spray-drying an aqueous solution of sodium phosphates during the production of sodium tripolyphosphate. Following moisturization, the hydrated particles are calcined at a temperature within the range of from about 300.degree. C. to about 600.degree. C. to produce a granular sodium tripolyphosphate product having an absorbtivity value of at least about 30%.

Abstract: A process for removing nickel and phosphorus species from a spent electroless nickel plating solution is described. This process involves an initial precipitation of phosphite values from the plating solution, followed by oxidation of hypophosphite and remaining phosphite to phosphate values, and the final removal of phosphate and nickel by lime precipitation. The treated plating solution is then separated from the precipitants, such as by filtration, and preferbly contain less than 1 milligrams/liter of nickel and/or total phosphorus species. This process is a cost effective method for treating spent electroless nickel plating solutions which is readily adaptable for on-site use.

Abstract: Molecular sieve compositions having three-dimensional microporous framework structures of LiO.sub.2, AlO.sub.2 and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Li.sub.x Al.sub.y P.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Li.sub.x Al.sub.y P.sub.z)O.sub.2 ; and "x", "y" and "z" represent the mole fractions of lithium, aluminum and phosphorus, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: This invention relates to a new form of crystalline silicoaluminophosphate identified as SAPO-17, to a new and useful improvement in synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.

Abstract: Process for production of desired phosphates from naturally occurring phosphates is characterized by treating naturally occurring phosphates under alkaline conditions to produce a material comprising trisodium and/or tripotassium orthophosphates, carbonating said material in solution, and recovering the desired phosphates from the carbonated solution. The desired phosphates include di- and mono-sodium orthophosphate; pentasodium tripolyphosphate; sodium metaphosphate and its polymers; tetrasodium pyrophosphate; ammonium phosphate; sodium ammonium hydrogen phosphate, magnesium ammonium phosphate; and the corresponding potassium salts thereof.

Abstract: Fluorine in phosphate ores is present as the mineral fluorapatite. When the ores are digested with sulfuric acid a slurry is formed which can be filtered to make wet-process phosphoric acid. But fluorine compounds are discharged into the surrounding air during digestion and filtration. The fluorine-containing air is scrubbed with water to prevent air pollution. Scrubber water is cooled in ponds and is recycled to the scrubber. However, fluorine compounds are emitted from the cooling ponds and cause air pollution. In the present invention, processes are disclosed for treating fluorine-containing gases without use of cooling ponds thereby eliminating the air pollution problem. A facility is provided for treating fluorine-containing gases wherein fluosilicic acid or fluosilicate salts are converted to a fluoride salt by the addition of an alkaline substance. A slightly acidic scrubber water is concentrated in an absorption tower.

Abstract: Disclosed is an inorganic polymeric cationic ion exchange matrix which is the condensation polymerized reaction product of components including an alkyl compound of an element that has a valence of at least three, water, and a dopant having groups including an ion exchangeable moiety and a replaceable hydrogen. The ion exchange matrix is preferably made by adding the water to the alkyl compound first followed by the addition of the dopant, followed by heating to dryness. The resulting product is a powder or granule that can be used as an ion exchange matrix by placing it in a column and passing a solution through it which contains metal ions that are exchanged with ions on the polymer.

Abstract: A process for the manufacture of novel phosphorus-vanadium and phosphorus-vanadium cometal catalysts having a characteristic X-ray diffraction pattern suitable for use in the manufacture of maleic anhydride from butane and other C.sub.4 hydrocarbon feedstocks which process comprises reacting at a temperature of about 0.degree. C. to about 200.degree. C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl halide in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent, and activating the catalyst by the addition of the hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300.degree. C. to about 500.degree. C. wherein the amount of water added is about 1,000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream is disclosed. The catalysts are useful for the manufacture of maleic anhydride from butane and other C.sub.

Abstract: A pesticide composition comprising a particulate hydrolyzable metal phosphide is rendered liquid phase water repellent by treating particles of the composition with a silicon-organic compound. The silicon-organic compound has at least one reactive moiety, preferably hydrogen capable of reacting with and binding to reactive sites contained on surfaces of particles of the composition. Preferably, the reactive group is hydrogen and the reactive site is a hydroxy group. The silicon-organic compound can also undergo cross-linking reactions. In the water-repellent treatment the silicon-organic compound may be applied to and be reacted to become bonded to any of the solid ingredients of the composition, including urea which serves as a self-ignition inhibitor. Preferably at least part of the silicon organic compound is bonded to particles of the metal phosphide. Advantages result if all the silicon-organic compound is thus bound to the metal phosphide.

Abstract: Alkali metal polyphosphates consisting substantially of hollow spheroidal particles with an apparent density of less than 350 g/l are made. To this end, an alkali metal orthophosphate solution is forced under a pressure of 6-40 bars into a fluidization zone; the orthophosphate solution is fluidized in the fluidization zone by injecting a finely dispersed permanent gas maintained under a pressure higher than the orthophosphate solution; and the fluidized orthophosphate solution is sprayed with the aid of a plurality of single medium nozzles arranged downstream of the fluidization zone through a flame zone peoduced inside the spray tower. Apparatus for carrying out the process.

Abstract: Novel processes are provided for producing anhydrous dicalcium phosphate (DCPA) and the gamma and beta forms of calcium pyrophosphate (CPP) from the reaction of phosphoric acid and lime. Dentifrice compositions containing the resultant phosphates are also disclosed.

Abstract: Alkali metal polyphosphates consisting substantially of hollow spheroidal particles with an apparent density of less than 320 g/l are made. To this end, an aqueous alkali metal orthophosphate solution and an aqueous solution of an inflating agent are simultaneously forced under a pressure of 6-40 bars into a fluidization zone; the two solutions are fluidized in the fluidization zone by injecting a finely dispersed permanent gas maintained under a pressure higher than the two solutions and the fluidized solutions are sprayed with the aid of a plurality of single medium nozzles arranged downstream of the fluidization zone through a flame zone produced inside the spray tower. Apparatus for carrying out the process.

Abstract: A microfine .beta.-tricalcium phosphate powder is produced by mixing hydrogen calcium phosphate powder, calcium carbonate powder, and water in amounts calculated to give a slurry having a solids concentration in the range of 5 to 15% by weight and a CA:P atomic ratio in the range of 1:1.4.about.1.6 and subjecting the slurry to attrition.

Abstract: Crystalline metallophosphoaluminates are prepared by hydrothermal crystallization utilizing a reaction mixture containing a substantially water-immiscible organic solvent wherein one of the aluminum, phosphorus or oxide sources is soluble in the organic solvent.

Abstract: The present invention relates to a process for preparing a calcium-phosphorus-apatite, essentially characterized by admixing a single solvent of water or an organic solvent compatible with water or a mixed solvent of water with an organic solvent compatible with water with calcium and phosphorus compounds soluble in said single or mixed solvent to prepare a raw material solution, and atomizing the raw material solution into a flame or a heating zone for effecting a thermal decomposition reaction thereof to form a calcium-phosphorus-apatite; a calcium-phosphorus-apatite obtained by the process and having novel characteristics; and the use of the calcium-phosphorus-apatite as a chromatographic packing material.

Abstract: A process for production of alkali metal polyphosphates and/or pyriphosphates from an alkali metal orthophosphate comprises acidifying said orthophosphate with sulphuric acid, and then either(a) heating the reaction mixture to produce the desired products, and recovering said products from the reaction mixture, or(b) separating an intermediate from the reaction mixture, and heating the intermediate to form a desired product.The products are suitable for incorporation into detergents and soap powders.

Abstract: The process for producing microsized amorphous particles of a metal phosphate incorporates the steps offorming a solution of a metal alkoxide in an organic solvent,forming an aqueous phosphoric acid solution,introducing the alkoxide and the phosphoric acid solutions into a reactor vessel wherein the solutions are immiscible and forming two separate liquid phases with an interface,applying agitation to at least the region of the interface to promote a reaction between the metal alkoxide and said phosphoric acid at the interface,collecting the reaction product, andfiring it in an oxygen containing environment at a temperature sufficiently high to drive off the organic residue.

Abstract: A process for the manufacture of a phosphorus-vanadium and phosphorus-vanadium co-metal catalysts suitable for use in the manufacture of maleic anhydride from benzene, butane, and other C.sub.4 hydrocarbons which process comprises reacting at a temperature of about 0.degree. C. to about 200.degree. C. a vanadium compound in an organic ether solvent having about 2 to about 10 carbon atoms with a phosphoryl halide in the presence of water or an aliphatic alcohol having from about 1 to about 8 carbon atoms, eliminating the solvent and activating the catalyst by the addition of the hydrocarbon feedstock and water and a phosphorus compound at a temperature of about 300.degree. C. to about 500.degree. C. wherein the amount of water added is about 1000 parts per million to about 40,000 parts per million by weight of the reactor feed gas stream is disclosed. The catalysts are useful for the manufacture of maleic anhydride from butane, benzene, and other C.sub.4 hydrocarbon feedstocks.

Abstract: This invention relates to a new synthetic crystalline microporous oxide material, a method for its preparation and use thereof in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern.

Abstract: A novel family of crystalline, microporous gallophosphate compositions is synthesized by hydrothermal crystallization at elevated temperatures from gallophosphate gels containing a molecular structure-forming template. The family comprises distinct species, each with a unique crystal structure. Calcination removes volatile extraneous matter from the intracrystalline void space and yields microporous crystalline adsorbents with pores, the dimensions of which vary, among the individual species, from about 3A to 10A in diameter. The compositions represent a new class of adsorbents of the molecular sieve type, and also exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as catalysts or catalyst bases in chemical reactions such as hydrocarbon conversions.

Abstract: A method of continuously producing ammonium polyphosphate by the reaction of urea and polyphosphoric acid, over a wide range of molecular weights, in a pre-mix slurry, under controlled temperature of about 315.degree.+/-15.degree. C. The slurry is reacted on a hot, continuously moving surface and forms ammonium polyphosphate in an ammonia atmosphere. Preferably, the pre-mixed slurry is added to a screw-type extruder, where the material comes in contact with the ammonia along the preheated moving surfaces of the extruder. The ammonium polyphosphate is scraped from the extrusion screw into a container with minimum handling. The material can be ground to a finer consistency if desired.

Abstract: A process for treating crystalline aluminophosphates to provide aluminophosphates having modified catalytic properties. The crystalline aluminophosphates are contacted with a halogen-derived compound at an effective temperature and for an effective time to alter the surface characteristics of the aluminophosphates with resulting modification of catalytic properties.

Abstract: In a process for producing crystals in crystallographic point group 32 and corresponding to the comprehensive chemical formula APO.sub.4, wherein symbol A is a chemical element taken from the group Al and Ga, P is phosphorus and O is oxygen, from heated solutions of salts of group A in phosphorus acid, the application of acid concentrations within the range of 12.5 to 20 mol/l, solution temperatures within the range of 110.degree. to 190.degree. C. and total pressures within the range of prevailing static vapour pressure to 2.5 bar provides a simple, safe and cost-effective method of producing perfect, flawless crystals.

Abstract: A process for producing a non-hazardous sludge from an aqueous solution which contains heavy metals comprising the steps of: (a) adding phosphoric acid or an acid phosphate salt to the aqueous solution to precipitate the heavy metals; (b) lowering the pH of the solution to less than about 5.0; (c) adding a coagulant to the solution; (d) raising the pH of the solution to above about 7.0 by the addition of a calcium source; and (e) dewatering the resulting non-hazardous sludge.

Abstract: A novel anhydrous sodium tripolyphosphate, well adapted for detergency applications, has an X-ray diffraction pattern essentially characterizing a phase I sodium tripolyphosphate; a viscosity, in aqueous medium, characterizing a phase II sodium tripolyphosphate; a rate of hydration characterizing a phase I sodium tripolyphosphate; and which exhibits an ROH at 1 minute of greater than about 90.degree. C.

Abstract: A novel anhydrous sodium tripolyphosphate, well adapted as an additive for foodstuffs and detergent compositions, has an Na/P ratio of essentially 1.667.+-.0.01, an apparent density of from 0.5 to 1.1, a mean agglomerate size of less than 100 microns, a phase I content ranging from 15 to 6% by weight, is devoid of insoluble fraction, and displays zero solidification or caking in a quiescent solvent medium.

Abstract: A novel sodium orthophosphate has the formula Na.sub.5 H.sub.4 (PO.sub.4).sub.3 wherein the Na/P ratio thereof is essentially 5/3, and which is characterized by but a single crystalline phase and a characteristic X-ray diffraction pattern.

Abstract: Molecular sieves, particularly zeolites, are prepared using adamantane compounds as templates.

Abstract: A novel crystalline aluminophosphate of the molecular sieve type, denominated AlPO.sub.4 -39, is prepared by hydrothermal synthesis from reactive sources of aluminum and phosphorus and an organic templating agent.

Abstract: The present invention provides a fibrous product of apatite comprising one or more apatites selected from a group of apatites represented by the general formula:M.sub.10 (ZO.sub.4).sub.6 X.sub.2wherein M represents Ca, Ba, Mg, Sr, Pb, Cd, Fe and the like, ZO.sub.4 represents PO.sub.4, AsO.sub.4, VO.sub.4, CO.sub.3 and the like, and X represents F, Cl, OH and the like. This fibrous product of apatite has many applications such as uses for medical treatment, large scale microorganism cultivating media and others, and particularly it is useful as apatite implant materials having a good compatibility with living organism and superior workability.A fibrous apatite product of this invention may be produced by a method comprising the steps of:(a) preparing a dispersion of apatite by dispersing fine apatite particles uniformly in a solution of binder in water, said apatite being one or more apatites selected from a group of apatites represented by the general formula:M.sub.10 (ZO.sub.4).sub.6 X.sub.