TITANIUM DIOXIDE PIGMENT PRODUCTION

... 1371133 Precipitating TiO2 AMERICAN CYANAMID CO 2 March 1972 [1 April 1971] 9856/72 Headings C1N and C1A TiO2 is precipitated from Ti sulphate-Fe sulphate solution using hydrolysis seed prepared from Ti sulphate solution which has been clarified by treatment with activated carbon. The clarified solution may further be used to form a coating on the precipitated TiO2, after washing and calcining, by mixing the solution with a slurry of the TiO2, and adjusting the pH to 5-9 to precipitate hydrous TiO2. The Ti sulphate solution to be clarified may initially be treated with a reducing agent, e.g. Zn. The charcoal may be leached before use with HCl to remove iron. A chelating agent, e.g. ethylenedinitrilotetraacetic acid, may be added with the charcoal. In the coating process, other metal salts may also be used, e.g. chlorides, sulphates, nitrates or acetates of Al, Ce, Be, Zn, Sn or Zr.

Improvements in the preparation of titanium dioxide pigments

Rutile is prepared by calcination at or above about 1000 DEG C., of a hydrous titanium dioxide containing prior to calcination, rutile seeds, (in addition to those used in the initial hydrolysis) a water-soluble aluminium salt, a water-soluble phosphate and a basic potassium salt. The calcination is continued until the titanium dioxide is substantially completely converted into the rutile form. Ordinarily, the calcination is effected in the presence of 1-6% rutile seeds, 0.3-2.5% of a water-soluble aluminium salt (calculated as Al2O3) 0.1-0.5% of a watersolubl phosphate (calculated as P2O5) and 0.1-1.0% of a basic potassium salt (calculated as K2O) based by weight on the titanium dioxide. However, if the ore from which the titanium sulphate solution is obtained contains phosphorus, then the addition of extra phosphorus compounds may not be required. The seeds added before hydrolysis can be those obtained according to Example 1 of Specification 513,867, by halide hydrolysis in caustic soda ...

Production of titanium oxide

Improvements in and relating to the production of titanium dioxide and products containing the same

Titanium dioxide is prepared by the hydrolysis, by heating, of titanium sulphate solutions containing at least 14 per cent by weight of TiO2 and less than two mols H2SO4 free and combined per mol of titanium, and having a water content less than 55 per cent by weight. Preferably the solutions contain more than 25 per cent by weight of sulphuric acid, and no more ferrous sulphate than corresponds to its solubility in the solutions used at 15 DEG C. Adjustment of the water content of the solution may be effected by evaporation at atmospheric or reduced pressure, or by addition of a soluble substance such as ammonium sulphate which does not react with the constituents of the solution. Hydrolysis may be effected in the presence of nuclei comprising colloidal titanium hydrates or tin oxide and at temperatures between 80 and 200 DEG C. if necessary under pressure. Composite products may be obtained by carrying out the hydrolysis in the presence of carriers such as blanc fixe or calcium sulphate ...

Organic sol and solid compound based on titanium oxide and an amphiphilic compound and preparation methods

PRODUCTS AND METHODS FOR REMOVING SUBSTANCES FROM AQUEOUS SOLUTION

The present invention relates to products and methods for removing or recovering substances from aqueous solution. Titanic acid product is used as adsorption material for several substances, for example impurities or contaminants, such as arsenic, lead, fluorine or phosphate. The present invention also relates to a granule for removing substances from aqueous solution and a filter assembly comprising titanic acid or said granule.

Verfahren zur hydrolytischen Ausfällung von Titanverbindungen.

Improvements with the preparation of rutilic titanium pigments and products obtained

New coated particles of anatase titanium di:oxide, having anti-UV properties

L'invention concerne un procédé de préparation d'une composition de revêtement anti-UV, dans lequel on utilise des particules de dioxyde de titane anatase de taille d'au plus 100 nm, lesdites particules étant revêtues au moins en partie par un dépôt d'au moins un composé du cérium. L'invention concerne aussi une composition pour revêtement comprenant ces particules à titre d'agent anti-UV et au moins un liant.

СПОСОБ ПОЛУЧЕНИЯ ПИГМЕНТА ДИОКСИДА ТИТАНА

Использование: для производства бумаги, волокна, керамики, в лакокрасочной промышленности. Сущность изобретения: при осуществлении способа предусматривается реакция в растворе предшественника тетрагалогенида титана с серной кислотой с получением промежуточного титанилсульфатного продукта. После кристаллизации и выделения этого промежуточного продукта из раствора кристаллизованный промежуточный продукт вновь растворяют в водной растворительной среде и гидролизуют при повышенной температуре с получением аморфного титандиоксидного промежуточного продукта в форме частиц. После отделения от водной растворительной среды промежуточный продукт подвергают кальцинированию при повышенной температуре с получением целевого титандиоксидного конечного продукта в форме частиц. 24 з.п.ф-лы, 1 ил.

Production of rutile titanium dioxide

A process for the formation of rutile titanium dioxide from a titanium sulphate solution comprises heating the titanium sulphate in the presence of a suspension of nuclei comprising a mixture of rutile-promoting nuclei and non-rutilising nuclei in which mixture the proportion of rutile-promoting nuclei is not greater than 25% by weight. The hydrous titanium dioxide formed is calcined to form rutile having a higher average crystal size than would be expected if the titanium sulphate had been hydrolysed in the presence of the same quantity of rutile-promoting nuclei. Rutile with a large average crystal size is useful in specialist pigmentary applications such as infra-red reflecting paints.

Process for the production of pigmentary tio

... 1,135,787. Titanium dioxide production. BRITISH TITAN PRODUCTS CO. Ltd. 9 June, 1967 [26 Aug., 1966], No. 38299/66. Heading C1A. In the production of pigmenting TiO 2 by preparing an aqueous acidic TiSO 4 solution, nucleating the solution and thermally hydrolysing to precipitate TiO 2 , the conditions of hydrolysis are controlled to provide a substantially constant rate of precipitation of hydrous TiO 2 for at least 60%, usually for at least 75%, and preferably for 100% of the time of hydrolysis while maintaining the rate of precipitation throughout the process below 1À2%, preferably between 0À3 to 0À8%, per minute of the titanium (expressed as TiO 2 ) in the initial solution. The aqueous acidic TiSO 4 solution is preferably prepared by digesting ilmenite or a titaniferous slag derived therefrom, in concentrated H 2 SO 4 at elevated temperatures, followed by lixiviation with water or dilute H 2 SO 4 , reduction with e.g. scrap iron, and finally clarification of the solution. When the iron ...

ORGANIC SOL AND SOLID ON BASIS OF TITANIUMOXYD AND A AMPHIPHILEN MATERIAL AND PROCEDURE FOR THE PRODUCTION

RECUPERATION OF TITANIUM FROM TITANHALTIGEN MATERIALS

MANUFACTURE OF TITANIUM DIOXIDE BY THE SULPHATE PROCESS

TITANIUM DIOXIDE AGGREGATES, PROCESS FOR PRODUCING SAME AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MATERIAL CONTAINING SAME

The present invention provides novel titanium dioxide aggregates especially suitable for an electrophotographic photosensitive material. This titanium dioxide aggregates comprise sintered aggregates of fine primary particles and have a rutile type crystal structure and an oil absorption of 35-65. This titanium dioxide aggregates which are treated with a mineral acid is also provided. There is also provided an electrophotographic photosensitive material which contains such titanium dioxide in a photosensitive layer.

METHOD FOR PRODUCING PARTICULATE TITANIUM OXIDES

Method for Producing Particulate Titanium Oxides Abstract The invention relates to a method for the preparation of particulate pigmentary titanium dioxide. The method comprises reacting, in solution, a precursor titanium tetrahalide with sulfuric acid to produce an intermediate titanyl sulfate product. Following crystallization and recovery of this intermediate product from solution the crystallized intermediate is redissolved in an aqueous solvent medium and hydrolyzed at elevated temperatures to provide a particulate amorphous titanium dioxide intermediate product. After separation from the aqueous solvent medium, this intermediate product then is subjected to calcination at elevated temperatures to produce the desired particulate titanium dioxide end product.

Manufactoring processes of pigments of titanium and intermediate products entering this manufacture

Improvements relating to the preparation of composed of titanium and composed similar

PROCESS Of HYDROLYSIS OF TITANIUM SULPHATE SOLUTIONS

Improvements brought to the manufacture of titanium pigments

Agent of sowing for the production of a titanium dioxide pigment having the structure of the rutile and its process of obtaining

Production of Titanium Dioxide Nuclei

Process of production of composed of titanium

Improvements with the manufacture of composed of titanium and titanium pigments

PREPARATION OF ANATASE TITANIUM DIOXIDE PIGMENT

PREPARATION OF ANATASE TITANIUM DIOXIDE PIGMENT

Organic sols and solid compositions based on titanium oxide and an amphiphilic compound useful for photocatalytic applications and in cosmetics, paint and plastic formulations

L'invention concerne un sol organique qui est caractérisé en ce qu'il comprend des particules d'oxyde de titane; une phase liquide organique et au moins un composé amphiphile choisi parmi les alkyl éthers phosphates polyoxyéthylénés. Le procédé de préparation du sol, selon une première variante, est caractérisé en ce qu'on mélange le composé amphiphile précité et la phase liquide organique, puis on disperse les particules d'oxyde de titane dans le mélange obtenu. Selon une seconde variante, on forme un mélange d'oxyde de titane et d'au moins un composé amphiphile précité puis on disperse dans la phase liquide organique ledit mélange. La présente invention concerne aussi un composé solide qui comprend un mélange de particules d'oxyde de titane et d'au moins un composé amphiphile choisi parmi ceux qui ont été mentionnés plus haut.

Process for preparing high quality titanium dioxide

A process for preparing high quality titanium dioxide which exhibits excellent reflectance and tint strength when incorporated into a coating formulation. The process involves the preparation of a seed solution wherein one of the seed curing factors of time, temperature and amount of alkaline neutralizing agent are varied to establish maximum reflectance and tint strength values obtained by the final product. The process can be repeated to analyze one or both of the other factors. The process can be used to prepare titanium dioxide in the anatase or rutile form and on a batch or continuous basis.

TITANIUM DIOXIDE PARTICLES, METHOD FOR THEIR PREPARATION AND THEIR USE IN COSMETICS, VARNISH AND SURFACE COATING

The invention concerns titanium dioxide particles coated at least partially: with a first layer of at least a cerium and/or iron compound, and a second layer of at least a metal oxide, hydroxide or oxohydroxide, the said particles having a BET specific surface area of at least 70 m2/g and a density of 2.5. The invention also concerns a method for preparing these particles and their use as anti-UV agent.

Improvements relating to the preparation of titanium and like compounds

... 275,672. Blumenfeld, J. Aug. 9, 1926, [Convention date]. Indiarubber compositions.-Oxides of titanium, thorium, zirconium, tin, cerium and other fourth group metals, are prepared by hydrolysis of a solution of a salt of said metal by heating, in which hydrolysis is initiated in an aqueous liquor of low concentration, and the concentration is gradually increased by adding with agitation a substantially concentrated solution of the salt over a prolonged period of time and preferably at a substantially uniform rate. A hot concentrated solution of titanium sulphate is poured slowly (e.g. in 10 minutes) with stirring into one fourth its volume of hot water or dilute solution, whereby collodial particles are formed at first and later precipitated. A yield of 80-95 per cent of oxide is obtained after 3 hours. The precipitate is a gel and after washing may be dispersed to the required extent by peptisation, e.g. by hydrochloric acid or other salt, preferably after neutralizing any residual sulphuric ...

Improvements in and relating to the manufacture of titanium pigments

A nucleus liquid for the hydrolysis of titanium sulphate solutions is prepared by treating sodium, potassium, zinc or magnesium titanate with a hydrohalic, e.g. hydrochloric, acid, or with nitric acid in the case of sodium or potassium titanate to produce a solution having a pH below 1.5, diluting the solution if necessary to give a TiO2 content of 5-80 grams/litre, and heating for 10 minutes to 2 hours at 50-100 DEG C. The titanate (ortho- or meta-) may be produced by heating, say, an oxide, hydroxide, or carbonate of the metal with titanium dioxide for 1-6 hours at 200-800 DEG C. To produce the above pH value, 3-9 mols. of 10-36 per cent acid may be employed, the period of treatment being 1-10 hours at 20-60 DEG C. The nucleus liquid is employed in an amount (calculated as TiO2) corresponding to 1-15 per cent of the TiO2 content of the sulphate solution to be hydrolysed. The titanium dioxide precipitates may be calcined for 1 1/2 -2 hours at 750-950 DEG C., if desired, with additions ...

Improvements in the hydrolytic precipitation of titanium compounds and in the manufacture of titanium pigments

... 513,867. Titanium dioxide ; pigments. TITAN GES. April 21, 1938, Nos. 12017, 12018, 12019, 12020 and 12021. Convention dates, April 29, 1937, Oct. 6, 1937, Nov. 5, 1937, Jan. 25,1938, and Jan. 28,1938. [Classes 1 (iii) and 95] The hydrolysis of a solution containing a titanium compound, for instance the tetrachloride, fluoride, nitrate, or sulphate, is carried out in the presence of a sol of a titanium compound having univalent anions which has been obtained directly from titanium salts having univalent anions and has been subjected to heat treatment, preferably to 70-90‹C. The sol may be obtained by adjusting a solution of titanium tetrachloride,. nitrate, or fluoride to a concentration of at most about 20 grams TiO2 per litre, and then heating the solution to above 70‹C. This produces an isodisperse sol. Alternatively, the diluted solution may be allowed to stand several days before heating, or pure tetrachloride be added to ice water and the sol so obtained be heated with or without ...

PROCESS FOR THE MANUFACTURE OF PIGMENTS OF TITANIUM DIOXIDE IN THE RUTILE FORM, AND PIGMENTS PRODUCED THEREBY

... 1,254,208. Titanium dioxide pigments. FABRIQUES DE PRODUITS CHIMIQUES DE THANN ET DE MULHOUSE. 24 Feb., 1969 [5 March, 1968], No. 9865/69. Heading C1N. In the production of rutile TiO 2 , an aqueous suspension of rutile seeds is added to an aqueous solution of titanium sulphate which is then hydrolysed; the resulting TiO 2 -hydrate gel is washed, and further rutile seed suspension, together with a zinc compound (0À1-2% as ZnO), an alkali metal salt (0À1-1% as K 2 O) and phosphoric acid or a water-soluble phosphate (0À2-0À8% as P 2 O 5 ) are added to the gel, which is then dried and calcined until it is substantially completely converted to rutile TiO 2 . Percentages are by weight based on the TiO 2 content of the washed gel. The two seed additives are preferably prepared by different methods, e.g. by hydrolysis of TiCl 4 and by acidification of sodium titanate. The total amount of rutile seed added may be 1-6 wt. per cent of the TiO 2 content of the washed gel. In examples, the titanium ...

TITANIUM DIOXIDE PARTICLE, YOUR MANUFACTURING PROCESS AND YOUR USE IN KOSMETIKA AND LACQUERS

Titanium dioxide particles, method for their preparation and their use in cosmetics, varnish and surface coating

Recovery of titanium from titanium bearing materials

Manufactoring process of composed of titanium

Process for the production of rutile

Hydrolytic process of decomposition of titanium solutions

TITANIUM DIOXIDE PRODUCTION FROM UPGRADED ANATASE ORE CONCENTRATES USING FLUID SULPHURIC ACID SULPHATION

Process of producing titanium dioxide of pigment quality, by chemically processing previously enriched and purified anatase ore, herein denominated Upgraded Anatase Concentrate, through digestion with sulphuric acid, maintenance of the reaction always in the form of a fluid suspension, utilization of high acid concentrations, as well as high tempertures, under boiling conditions, so as to separate from the liquid medium, after the digestion is completed, a crystallized cake of titanium sulphates, containing also the crystallized sulphates of most of the impurities still present in the ore, which, by means of a subsequent and easy dissolution with water or recycled black liquor, produces, in an effective way, the so-called 'black liquor', which is treated for producing the titanium dioxide by the usual other steps of the Sulphate Process, the whole process requiring a minimum consumption of acid and ensuring a minimum emission of polluting effluents.

Manufacture of titanium pigments

РУТИЛЬНЫЙ ДИОКСИД ТИТАНА И СПОСОБЫ ЕГО ПОЛУЧЕНИЯ (ВАРИАНТЫ)

FIELD: chemical industry. SUBSTANCE: method comprises heating aqueous titanium oxide which is readily converted into rutile titanium dioxide until at least 99.5 wt % are in rutile crystalline form. Aqueous titanium oxide is heated to 950 C at rate of 1 C per minute. Average crystal size varies form 0.17 to 0.32 mcm. Geometric weight standard particle size deviation is less than 1.25. Average particle size to average crystal size ratio is less than 1.25: 1. Product has very narrow particle distribution of particle and crystal size and is superb pigment. EFFECT: more efficient preparation methods. 31 cl, 7 ex

Способ получения концентрата двуокиси титана для производства пигментной двуокиси титана по хлоридному методу

Herstellung von Titandioxyd

RÜCKGEWINNUNG VON TITAN AUS TITANHALTIGEN MATERIALIEN

Improvements in or relating to the production of hydrated titanium compounds

In the production of titanium dioxide by hydrolysis by heat of titanium bearing solutions, a titanium sulphate solution containing at least 100 grms. TiO2 per litre, having a sulphate-titanium ratio of at least 0 : 9, and having all its iron content in the ferrous state, is used for the hydrolysis. The sulphate-titanium ratio is defined as the ratio Fe : TiO2 when the solution consists of iron and titanium sulphates only, or as Fe + Fe equiv. of SO4 in sulphates other than iron or titanium sulphate: TiO2 when other sulphates are present. The necessary sulphate-titanium ratio may be obtained by adding soluble sulphates or salts which will form soluble sulphates which will not hydrolyse with the titanium; for instance, salts of iron, magnesium, tin, aluminium, zinc, sodium, potassium, or ammonium may be added. Solutions having a "factor of acidity" between 20 and 70 per cent, and preferably between 40 and 50 per cent, are advantageously used, and hydrolysis may be assisted by addition of ...

MANUFACTURE OF TITANIUM DIOXIDE BY THE SULPHATE PROCESS

... 1468117 Titanium dioxide SOC ITALIANA RESINE SIR SpA 26 Sept 1975 [4 Oct 1974] 39436/75 Heading C1N Nuclei for use in the precipitation of titanium hydroxide in the sulphate process which results in an improved TiO 2 product in the rutile form are made by reacting TiCl 4 and steam in a molar ratio of 1 : 1-1 : 3 in the vapour phase at a temperature of 400-800‹ C. for 0À1-30 seconds to form a compound of formula Ti(OH) x Cl y where x = 1-3 and y = 3-1 and y + y = 4 and contacting the reaction product thus formed with an aqueous solution of NaOH to form an aqueous suspension containing Ti(OH) 2 with a Ti content, expressed as TiO 2 , of 10-30 g./l. and pH 3-4. The suspension thus formed may be added to a titanium sulphate solution which is subsequently hydrolysed to precipitate insoluble TiOH 2 or is added to such an hydrolysis product in amounts of 0À5-5 parts by weight Ti per 100 parts by weight Ti present in the sulphate solution and the resulting precipitate is calcined to form rutile ...

Improvements in or relating to the production of titanium pigments

Titanium nuclei to be added to titanium salt solutions to initiate or assist hydrolysis are obtained by dissolving orthotitanic acid in an aqueous solution containing sulphuric acid and a salt of an alkali metal or of magnesium, and heating the solution obtained to precipitate the nuclei. The salt employed may be sodium sulphate, chloride, or nitrate, or magnesium sulphate, and the solution may be heated between 60 and 100 DEG C. for periods up to four hours. The solutions to be hydrolyzed may be titanium sulphate solutions, and hydrolysis may be effected in the presence of barium or calcium sulphate to obtain composite pigments. Specification 388,978 is referred to.

Preparation of anatase titanium dioxide

Rutile titanium dioxide

A PROCESS LEADING TO THE PRODUCTION OF TITANIUM DIOXIDE PIGMENTS WITH A HIGH DEGREE OF WHITENESS

... 1,241,963. Sulphate process TiO 2 . FARBENFABRIKEN BAYER A.G. 20 Sept., 1968 [25 Sept., 1967], No. 44791/68. Headings C1A and CIN. TiO 2 is produced by digesting a TiO 2 -containing material in 40-70% H 2 SO 4 at a temperature of from 100‹ C. up to the b.pt, using a lot ratio of TiO 2 to H 2 SO 4 of 1: 1 to 1: 20, crystallizing TiOSO 4 .2H 2 O at 60-150‹ C. by adding acid such that at the end of crystallization its concentration is 2-13 m./l., separating and redissolving the crystals to give a TiO 2 concentration of 100-400 g./l., and hydrolysing the solution. The initial material may be ilmenite, a concentrate, or a slag. The acid added may be H 2 SO 4 or HCl, and seed crystals of TiOSO 4 .2H 2 O may be used. The crystals may be washed with 30-70% H 2 SO 4 , and dissolved in water or dilute H 2 SO 4 . Hydrolysis may be effected by adding a solution of TiIII chloride or sulphate, then running the solution into water at 50-100‹ C., boiling, diluting with water, and boiling to complete ...

HYDROLYSIS OF TITANIUM SULPHATE SOLUTIONS

PROCESS FOR THE HYDROLYSIS OF TITANIUM SULPHATE SOLUTIONS

RECOVERY OF TITANIUM FROM TITANIUM BEARING MATERIALS

A method of recovering titanium dioxide from a raw material additionally containing aluminium includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specified conditions, digesting and filtering the resultant cake material containing titanyl sulphate, if present, treating the solution to remove calcium and/or iron, precipitating out the aluminium as aluminium ammonium sulphate, hydrolysing the remaining titanyl sulphate solution and, after washing the hydrolysate, calcining the hydrolysate to produce titanium dioxide.

PREPARATION OF ANATASE TITANIUM DIOXIDE

A process for the preparation of anatase titanium dioxide comprises precipitating hydrous titanium oxide from an aqueous solution of a titanium sulphate by heating said aqueous solution in the presence of a nuclei suspension consisting of non-rutilising nuclei said nuclei suspension being prepared in the substantial absence of aluminium ions, and subsequently subjecting the hydrous titanium oxide formed to a calcination process in the presence of at least one potassium compound, at least one phosphorus compound and at least one aluminium compound. The potassium compound is present in an amount equivalent to between 0 1 and 0.7 per cent by weight potassium oxide calculated as K2O with respect to TiO2, the phosphorus compound is present in an amount equivalent to between 0.2 and 1.0 per cent by weight phosphorus oxide calculated as P2O5 with respect to TiO2 and the aluminium compound is present in an amount equivalent to between 0.1 and 0.5 per cent by weight alumina calculated as Al2O3 with ...

Method of preparation of pigmentary titanium dioxide

Improvements with the manufacture of the pigments containing titanium

New coated particles of anatase titanium di:oxide, having anti-UV properties

Dispersions of particles of anatase TiO2 obtained by (1) hydrolysis of at least one Ti compound (A) in the presence of at least one acid (B) selected from (i) acids having either a carboxyl group and at least two OH and/or amine groups, or at least two carboxyl groups and at least one OH and/or amine group, (ii) organic phosphoric acid of formula (OH)2P(O)(C(R<2>)(R<1>))nP(O)(OH)2 (I), (OH)2P(O)C(OH)(R<3>)P(O)(OH)2 (II) or (OH)2P(O)CH2N(CH2P(O)(OH)2)(CH2)mpN(CH2P(O)(OH)2)2 (III) in which n and m = whole numbers 1-6, p = whole number 0-5 and R<1>, R<2> and R<3> (same or different) = OH, amino, aralkyl, aryl, alkyl or H, (iii) compounds capable of releasing sulphate ions in acid medium and (iv) salts of the above acids, and in the presence of nuclei of anatase TiO2 with a size of at most 5 nm in a weight ratio expressed as TiO2 present in the nuclei/Ti present before introduction of the nuclei into the hydrolysis medium, expressed as TiO2, of 0.01 - 3 %; (2) recovering the particles obtained from the hydrolysis and forming these particles into a dispersion; (3) depositing a layer of at least o ne compound of Ce and/or Fe onto the particles from step 2 and (4) depositing a layer of at least one metallic salt, oxide or hydroxide in pure or mixed form onto the particles from step 3.

Отражающий инфракрасное излучение пигмент на основе диоксида титана, способ получения отражающего инфракрасное излучение пигмента на основе диоксида титана и способ получения красок, лаков, пластмасс, штукатурки или брусчатки посредством вышеуказанного пигмента

1. Отражающий инфракрасное излучение пигмент на основе диоксида титана, включающий частицы диоксида титана-рутила с размером частиц dот 0,4 мкм до 1 мкм, при этом частицы диоксида титана легированы цинком и калием и свободны от легирования алюминием.2. Пигмент по п. 1, в котором частицы содержат от 0,1 до 0,8 мас. % цинка, более предпочтительно от 0,2 до 0,4 мас. % цинка, при этом от 0,2 до 0,25 мас. % цинка находятся в виде ZnO и в расчете на массу TiO.3. Пигмент по п. 1, в котором частицы содержат от 0,1 до 0,4 мас. % калия, более предпочтительно от 0,18 до 0,26 мас. % калия в виде KO и в расчете на массу TiO.4. Пигмент по п. 1, в котором максимальное соотношение сторон частиц диоксида титана составляет 1,5:1.5. Пигмент по любому из пп. 1-4, в котором поверхность частиц диоксида титана обработана неорганическими и/или органическими соединениями.6. Способ получения отражающего инфракрасное излучение пигмента на основе диоксида титана, включающий обработку исходного материала, содержащего титан и железо, серной кислотой с образованием сульфата железа и титанилсульфата, после чего сульфат железа отделяют, а титанилсульфат гидролизуют с образованием гидрат оксида титана, который обрабатывают на стадии отбеливания, затем отбеленный гидрат оксида титана смешивают с зародышами кристаллизации рутила, соединением цинка и соединением калия без смешивания с соединением алюминия и прокаливают с образованием частиц диоксида титана-рутила с размером частиц dв диапазоне от 0,4 мкм до 1 мкм.7. Способ по п. 6, в котором соединение цинка добавляют в количестве, достаточном до содержания в частице диоксида титана от 0,1 до 0,8 мас. % цинка, более предпочтительно от 0,2 до 0,4 мас. % цинка, и от 0,2 до 0,25 мас. % цинка в виде ZnO и в расчете на массу TiO.8. Способ по п. 6, в котором соединение

Verfahren zur Herstellung von pigmentartigem Titandioxyd

Titanium oxide pigment production

... 568,232. Titanium oxide pigments. DU PONT DE NEMOURS & CO., E. I. Jan. 26, 1943, No. 1320. Convention date, Jan. 9, 1942. [Classes 1 (iii) and 95] A nucleating agent for titanium salt solution hydrolysis is prepared by mixing alkali with a titanium chloride solution to produce an alkaline suspension of hydrous titanium oxide, and activating the hucleating characteristics thereof by admixing a mineral acid until the suspension is acid in reaction. Preferably, a titanium chloride solution containing up to 125 g./l. TiO2 is mixed with alkali such as caustic soda, at not more than about 50‹ C., to produce a hydrous titanium oxide suspension of alkalinity about .2-.8 N, e.g..4 N NaOH, determined by titration with .1 N H2SO4 and brom thymol blue. After a relatively short time, usually 1-5 mins., the suspension is brought to an acidity of about .05-2.5, preferably .1-1 N, determined by titration with .4 N NaOH and the same indicator. This may be effected by adding further titanium chloride solution ...

PROCESS FOR THE HYDROLYSIS OF TITANIUM SULPHATE SOLUTIONS

... 1335537 Ti sulphate hydrolysis DOWUNQUINESA SA 20 Nov 1970 [22 Nov 1969] 55358/70 Heading C1N In a process for producing TiO 2 by hydrolysis of a seeded Ti sulphate solution, the solution is heated at or below its b.pt. with agitation while its reflectance is continuously monitored, and after the curve of reflectance against time has reached a point of inflection, agitation and heating are preferably stopped for 5-60 mins., and then heating is resumed with simultaneous dilution. The reflectance may be measured by means of a photo-electric cell, the critical point causes a change in control current which initiates the further series of operations. The seeds may be prepared separately, or in situ, e.g. by slowly adding the solution to water, both at 90-100‹ C. The solution may initially contain 100-300 g./l. TiO 2 and be diluted to 140-180 g./l. The product may be treated with K 2 SO 4 and calcined.

PROCESS FOR THE HYDROLYSIS OF TITANIUM SULPHATE SOLUTIONS

... 1474164 Hydrolysis of titanium sulphate solutions SOC ITALIANA RESINE SIR SpA 9 April 1976 [30 April 1975] 14649/76 Heading CIN Titanium sulphate solutions obtained in the sulphate process by reacting titanoferrous materials with sulphuric acid are hydrolysed by (i) gradually bringing into contact a first solution (A) of titanium sulphate having a TiO 2 titer of 230-260 g/l and an acid factor (which is the weight ratio between the sum of the free and combined sulphuric acid in the solution and the titanium content) of 1À75-1À85 heated to 88-98‹ C. and water at 88-98‹ C. to induce the formation of hydrolysis nuclei by autonucleation, (ii) gradually adding a second solution (B) of tianium sulphate having a TiO 2 titer of 230-260 g/l. and acid factor of 2À1-2À4 heated to a temperature of 88-98‹ C. to the mixture obtained in stage (i) maintained at 88-98‹ C. while maintaining a volumetric ratio A : B of 3-12 : 100 and a volumetric ratio (A + B) : water in stage (a) of 3-5 : 1 and (iii) heating ...

Improvements in and relating to the hydrolytic decomposition of titanium salt solutions

... 536,141. Titanium dioxide. TITAN CO., Inc. Nov. 2, 1939, No. 29252. Convention date, Nov. 3, 1938. [Class 1 (iii)] In the process of producing titanium di-oxide pigment by the hydrolisis of a titanium salt solution involving the use of a heat treated nucleating solution containing partially hydrolysed titanium tetrachloride, the nucleating solution is treated with sufficient neutralizing agent to neutralize between 0.75 and 1.25 chlorine atom equivalents per mol of titanium tetrachloride and the solution is subjected to heat treatment at a dilution corresponding to between 5 and 20 grams of titanium calculated as TiO 2 per litre. The nucleating solution is prepared by partial neutralization of a strong solution of TiCl 4 , followed by dilution to the stated extent and heating to 80‹-90‹C. for 10 minutes to produce opalescence or under such conditions of time and temperature that an equivalent opalescence is produced. Before neutralization zinc dust may be added to reduce oxidizable impurities ...

Improved tio precipitation process

Improvements brought to the manufacture of titanium pigments

Manufactoring process of pigments to titanium and pigments obtained according to this process

Manufactoring process of titanic acid and titanium pigments

Production of titanium pigments

TIO/2\ PRECIPITATION PROCESS

Device for detecting hydrolysis of titanium oxysulfate in real-time and apparatus for controlling hydrolysis of titanium oxysulfate

Disclosed herein are a device for detecting hydrolysis of titanium oxysulfate in real-time and an apparatus for controlling hydrolysis of titanium oxysulfate. The apparatus includes a heating device (6), a stirring device (7), a detecting unit, an analyzing unit (2), and a control unit (4). The heating device and the stirring device respectively heat and stir a solution contained in a hydrolysis container. The detecting unit is disposed in the solution contained in the hydrolysis container and is connected to the analyzing unit to detect a reflectance of the solution in real-time and transmit a detected result to the analyzing unit. The analyzing unit analyzes a first derivative of the reflectance against hydrolysis time, and is connected to the control unit to transmit a control signal to the control unit when an inflection point of the first derivative occurs. The control unit stops operations of the heating device and the stirring device according to the control signal. The device and ...

Improvements in or relating to the production of titanium dioxide

Titanium hydrates are obtained by adding a solid alkali titanate or the product obtained by leaching the latter with water and/or dilute sulphuric acid to a titanium salt solution and heating the solution to promote hydrolysis. Hydrolysis may be effected at atmospheric pressure at or below the boiling point of the solution or by boiling the solution under pressure, and the added titanate &c. is preferably used in a dry state. Solutions of titanium sulphate containing 150 to 250 grms. per litre and having a factor of acidity of 60--90 may be employed. Alkali titanate for use in the process may be obtained by fusing or fritting ilmenite, rutile or titanium oxide with caustic soda or potash; for example, rutile is mixed with a 75 per cent caustic soda solution, the mixture kneaded, soda ash added, and the whole heated to 300 DEG C. and then calcined at 600--650 DEG C. for 30 minutes to yield a fine granular powder. The quantity of titanate added may be 5--20 per cent of the weight of titanium ...

Process for preparing titanium dioxide

Titanium dioxide of improved properties for use as a pigment is obtained by a process in which a non- concentrated acid solution containing not more than 200 grams of TiO2 per litre of solution is partially hydrolyzed and filtered; and additional acid solution is slowly added with heating to effect further hydrolysis and give a product which after calcining has a color index of about 1500.

Infrared-reflecting pigment based on titanium dioxide, and method for producing it

The invention relates to rutile titanium dioxide pigment particles which are capable of reflecting infrared radiation to a high degree and of exhibiting pigmenting properties, and also to a method for producing them. The particles have an average size of 0.4 to 1.0 μm and are doped with zinc and potassium, but not with aluminium. The particles have a stocky shape with a preferred side ratio of 1.5:1. The particles are produced preferably by the known sulphate process for producing titanium dioxide, and after having been calcined are optionally given an organic and/or inorganic aftertreatment. The rutile titanium dioxide particles of the invention are suitable for producing heat insulation paints, varnishes or plastics and also, for example, for producing renders or paving stones.

Titanium dioxide particles, method for their preparation and their use in cosmetics, varnish and surface coating

Manufactoring process of titanium dioxide pigments

Process of precipitation of the titanium solutions per hydrolysis, with addition of composed of titanium

Herstellung reiner Titankeime fuer die hydrolytische Faellung von Titansaeure

Production of rutile titanium dioxide

Improvements in or relating to the production of titanium pigments

The hydrolysis of titanium salt solutions is effected by heating in the presence of a gel comprising a hydrated titanium compound. The gel may be added in the dry state in a quantity corresponding to 2--5 per cent of the titanium present calculated as TiO2. Formation of the gel may be effected by neutralizing a titanium sulphate or chloride solution with an alkali or alkaline-earth metal hydroxide, carbonate, or sulphide, or by adding acid to an alkali or alkaline-earth metal titanate. By carrying out the hydrolysis in the presence of a carrier such as barium or calcium sulphate, composite products may be obtained. The products of hydrolysis, after washing and calcining, are suitable for use as pigments. Reference has been directed by the Comptroller to Specification 329,041, [Class 1 (iii)].

Production of Titanium Dioxide Nuclei

... 1,158,830. TiO 2 nuclei. BRITISH TITAN PRODUCTS CO. Ltd. 10 July, 1968 [8 Aug., 1967], No. 36288/67. Heading C1N. Nuclei for Ti sulphate hydrolysis are prepared by freezing and remelting an aqueous suspension or cake of TiO 2 nuclei and separating the solid nuclei from the liquid. The cooling rate is at least 4‹ C. per min., at least from 1‹ C. above to 4‹ C. below the f.pt., e.g. 20- 30‹ C. per min., and freezing may be instantaneous. The suspension may contain 10% by wt. or less TiO 2 , and may be cooled by dropping it into liquid N 2 , O 2 or air, or solid CO 2 , or by spraying it on to a surface cooled by liquid N 2 or air. It may be allowed to melt, or heated at below 100‹ C., and then separated by filter or centrifuge. The suspension may be reconstituted by mixing the nuclei with water or HCI in a ball mill, and added to a solution of Ti sulphate obtained by digesting Ti slag or ilmenite in H 2 SO 4 . The TiO 2 obtained on hydrolysis may be calcined at 860‹ or 885‹ C. after addition ...

Infrared-reflecting pigment based on titanium dioxide, and method for producing it

The invention relates to rutile titanium dioxide pigment particles which are capable of reflecting infrared radiation to a high degree and of exhibiting pigmenting properties, and also to a method for producing them. The particles have an average size of 0.4 to 1.0 m and are doped with zinc and potassium, but not with aluminium. The particles have a stocky shape with a preferred side ratio of 1.5:1. The particles are produced preferably by the known sulphate process for producing titanium dioxide, and after having been calcined are optionally given an organic and/or inorganic aftertreatment. The rutile titanium dioxide particles of the invention are suitable for producing heat insulation paints, varnishes or plastics and also, for example, for producing renders or paving stones.

TITANIUM DIOXIDE AGGREGATES, PROCESS FOR PRODUCING SAME AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MATERIAL CONTAINING SAME

The present invention provides novel titanium dioxide aggregates especially suitable for an electrophotographic photosensitive material. This titanium dioxide aggregates comprise sintered aggregates of fine primary particles and have a rutile type crystal structure and an oil absorption of 35-65. This titanium dioxide aggregates which are treated with a mineral acid is also provided. There is also provided an electrophotographic photosensitive material which contains such titanium dioxide in a photosensitive layer.

TITANIUM DIOXIDE PARTICLES, METHOD FOR THEIR PREPARATION ANDTHEIR USE IN COSMETICS, VARNISH AND SURFACE COATING

La présente invention concerne des particules de dioxyde de titane recouvert es au moins partiellement: d'une première couche d'au moins un composé du cériu m et/ou du fer; et d'une deuxième couche d'au moins un oxyde, hydroxyde ou oxohydroxyde métallique, lesdites particules présentant une surface spécifiq ue BET d'au moins 70 m2/g et une densité de l'ordre de 2,5. Elle concerne également un procédé de préparation de ces particules et leur utilisation en tant qu'agent anti-UV.

Preparation method of titanium sulfate liquid hydrolyzed high-activity seed crystal

ORGANIC GROUND AND COMPOSES SOLID CONTAINING TITANIUM OXIDE AND COMPOSEAMPHIPHILE AND PROCESS OF PREPARATION

Process for the manufacture of pure titanium oxide

Process of recovery of the titanium dioxide hydrated starting from the waste acids of hydrolysis of the manufacture of the titanium dioxide by the process of attaqueà sulphuric acid

PROCESS FOR THE PREPARATION OF TITANIUM DIOXIDE CONCENTRATES

PROCESS FOR THE PREPARATION OF TITANIUM DIOXIDE CONCENTRATES

Preparation of titanium hydroxide

Verfahren zur Herstellung eines Keimbildners fuer die Hydrolyse von Titansulfatloesungen

Preparation of anatase titanium dioxide

Microwave Assisted and Low-Temperature Fabrication of Nanowire Arrays on Scalable 2D and 3D Substrates

A method of making a titanium dioxide nanowire array includes contacting a substrate with a solvent comprising a titanium (III) precursor, an acid, and an oxidant while microwave heating the solvent, thereby forming a hydrogen titanate H2Ti2O5.H2O nanowire array. The hydrogen titanate nanowire array is annealed to form a titanium dioxide nanowire array. The substrate is seeded with titanium dioxide before starting the hydrothermal synthesis of the hydrogen titanate nanowire array. The titanium dioxide nanowire array is loaded with a platinum group metal to form an exhaust gas catalyst. The titanium dioxide nanowire array can be used to catalyze oxidation of combustion exhaust. 1. A method of making a hydrogen titanate (HTiO.HO) nanowire array , the method comprising:{'sub': 2', '2', '5', '2, 'contacting a substrate with a solvent comprising a titanium (III) precursor, an acid, and an oxidant while microwave heating the solvent, thereby forming a hydrogen titanate (HTiO.HO) nanowire array.'}2. The method of claim 1 , wherein the substrate comprises a cordierite honeycomb monolith.3. The method of claim 1 , wherein the solvent is a polar solvent.4. The method of claim 1 , wherein the solvent is a protic solvent.5. The method of claim 1 , wherein the solvent is water.6. The method of claim 1 , wherein the titanium (III) precursor is TiCl.7. The method of claim 1 , wherein the titanium (III) precursor is Ti(SO).8. The method of claim 1 , wherein the titanium (III) precursor is a titanium (III) alkoxide.9. The method of claim 1 , wherein the acid is hydrochloric acid (HCl).10. The method of claim 9 , wherein the acid is from about 25 wt. % to about 40 wt. % HCl.11. The method of claim 1 , wherein the acid is sulfuric acid (HSO).12. The method of claim 1 , wherein the oxidant is hydrogen peroxide.13. The method of claim 12 , wherein the hydrogen peroxide is from about 20 wt. % to about 40 wt. % in water.14. The method of claim 1 , wherein the solvent is heated by ...

柴油车尾气脱硝催化剂用二氧化钛粉体的制备方法

本发明属于脱硝催化和环保技术领域，具体的涉及一种柴油车尾气脱硝催化剂用二氧化钛粉体的制备方法。通过水解晶种的制备、钛液水解、偏钛酸水洗和打浆以及向偏钛酸浆料中加入硅酸钠和偏钨酸铵溶液进行包覆处理，然后对包覆处理后的偏钛酸进行后处理，得到TiO 2 粉体。此二氧化钛粉体用作钛基体系的钒钨催化剂的载体，具有很高的老化比表面积，在不增加现有催化剂用量的情况下，提高催化剂的催化效果，并且在较高温度下保持高效的催化活性。

A kind of preparation method of rutile titanium dioxide superfine powder

本发明属于化学化工和无机非金属材料的制备领域，具体涉及一种金红石型二氧化钛超细粉的制备方法。该方法制得的金红石二氧化钛超细粉遮盖力和耐候性能比锐钛型的钛白粉要好，又提高了产品的白度。

Production process of titanium dioxide by sulfuric acid process

本发明公开了一种硫酸法二氧化钛的生产工艺，原料组成成分包括浓度为98％的浓硫酸、纯度为45‑48％的钛精矿和纯度为70‑75％的高钛渣，且各所述原料组成比分别为浓硫酸65‑70％、钛精矿13‑17％和钛精矿13‑17％。本发明一种硫酸法二氧化钛的生产工艺，将钛液先进行预热，然后将钛液注入一半加入晶种，通过将钛液逐步加入水解锅中并持续进行搅拌，能够提高钛液的水解效率，且当钛液加入完成后，通过外部蒸汽再次对钛液进行加热直至沸腾，能够进一步提高钛液的水解效率，将酸解过程产生的废气先通过碱水喷淋大塔进行吸收、除尘和降温，再通过文丘里清水喷淋吸收，最后再通过除臭设备和除雾塔进行处理，达标后再进行排放，能够减小酸解过程产生的废气对空气的污染。

Patent FR1573954A

TITANIUM DIOXIDE DISPERSION, TITANIUM DIOXIDE POWDER, THEIR USE IN COSMETIC FORMULATIONS

PROCESS FOR HYDROLYSIS TITANIUM SULPHATE SOLUTIONS

PROCESS FOR THE PREPARATION OF A TITANIUM DIOXIDE ANTI-UV COATING COMPOSITION

Infrared-reflecting pigment based on titanium dioxide and process for its preparation

Die Erfindung betrifft Titandioxid-Pigmentpartikel, die in der Lage sind, in hohem Maße Infrarotstrahlung zu reflektieren als auch pigmentierende Eigenschaften aufweisen, sowie ein Verfahren zu ihrer Herstellung. Die Partikel weisen eine mittlere Partikelgröße von 0,4 bis 1,0 μm auf und sind mit Zink und Kalium dotiert, nicht jedoch mit Aluminium. Die Partikel weisen eine gedrungene Partikelform auf mit einem bevorzugten Seitenverhältnis von 1,5:1. Die Partikel werden bevorzugt nach dem bekannten Sulfatverfahren zur Herstellung von Titandioxid hergestellt und nach der Calcinierung optional anorganisch und/oder organisch nachbehandelt. Die erfindungsgemäßen Titandioxidpartikel sind geeignet zur Herstellung von wärmeisolierenden Farben, Lacken oder Kunststoffen. The invention relates to titanium dioxide pigment particles which are capable of reflecting infrared radiation to a high degree and also have pigmenting properties, and a process for their production. The particles have an average particle size of 0.4 to 1.0 μm and are doped with zinc and potassium, but not with aluminum. The particles have a compact particle shape with a preferred aspect ratio of 1.5: 1. The particles are preferably produced by the known sulfate process for producing titanium dioxide and, after the calcination, are optionally inorganically and / or organically aftertreated. The titanium dioxide particles according to the invention are suitable for the production of heat-insulating paints, varnishes or plastics.

Infrared-reflecting pigment based on titanium dioxide, and method for producing it

본 발명은 적외선을 고도로 반사시킬 수 있고 안료화 특성을 나타낼 수 있는 루틸 이산화티타늄 안료 입자, 및 그 제조 방법에 관한 것이다. 상기 입자들은 0.4 내지 1.0 ㎛의 평균 입자 크기를 갖고 아연 및 칼륨으로 도핑되지만, 알루미늄으로 도핑되지 않는다. 상기 입자들은 1.5:1의 바람직한 측면 비율을 가진 다부진 입자 형태를 갖는다. 입자들은 바람직하게는 이산화티타늄의 제조를 위한 공지된 황산염 프로세스에 따라 제조되고, 하소 후에 선택적으로 무기 및/또는 유기로 후처리된다. 본 발명에 따른 루틸 이산화티타늄 입자들은 열 절연 페인트, 바니쉬 또는 플라스틱의 제조에 그리고 예를 들면 플라스터 또는 포석의 제조에 적합하다.

Process for the production of titanium acid or titanium pigments

Manufacture of pigmenting titanium dioxide

1335184 Modified TiO 2 LAPORTE INDUSTRIES Ltd 16 Dec 1970 [24 Dec 1969] 62927/69 Heading C1N Pigmentary TiO 2 is produced by hydrolysing a solution of Ti sulphate to ppt. hydrous TiO 2 , incorporating rutile-inducing seeds with the sulphate solution and/or with the ppt., treating the washed ppt. with 0À02-0À5% by wt. (calo. as oxide) in total of one or more of Be, Al, Mg, Zn, Li or compounds thereof, 0À05-1% by wt. (calc. as oxide) in total of one or more of Na, K, Rb, Cs, Li or compounds thereof, and at least 0À7% by wt. (talc. as (NH 4 ) 2 SO 4 ) of ammonium compound(s), adjusting the pH if necessary to 6-10, and calcining at 750-1000‹ C. The additive compounds may be sulphate, chloride, nitrate, basic chloride or sulphate, carbonate, bicarbonate, oxide, hydroxide, formate, acetate, oxalate, benzoate, metal alkyl or alkoxide. They may be added to an aqueous slurry of the TiO 2 , before and/or after pH adjustment, as an aqueous solution or solid. The ammonium compound may be NH 4 OH or (NH 4 ) 2 CO 3 or may be formed in situ from gaseous NH 3 . pH adjustment may be effected with the NH 4 compound and/or with alkali metal or alkaline earth metal hydroxide or carbonate. Calcination may be carried out in a rotary kiln or muffle furnace with a rate of increase of temperature of less than 1‹ C. per min. The product may be wet milled and leached and the leach liquor used to treat fresh TiO 2 hydrolysate. Various methods of making the seeds are mentioned. In comparative examples, Si, Sn, Ca, Zr, Cd and Si are incorporated with the ppt.

Recovery of titanium from titanium bearing materials

A method of recovering titanium dioxide from a raw material additionally containing aluminium includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specified conditions, digesting and filtering the resultant cake material containing titanyl sulphate, if present, treating the solution to remove calcium and/or iron, precipitating out the aluminium as aluminium ammonium sulphate, hydrolysing the remaining titanyl sulphate solution and, after washing the hydrolysate, calcining the hydrolysate to produce titanium dioxide.

Production of titanium oxide pigments

Method of obtaining titanium oxide

Purification of titanium sulphate solutions

Products and methods for removing substances from aqueous solution.

La presente invencion se refiere a productos y metodos para retirar y recuperar sustancias de una solucion acuosa. El producto de acido titanico se usa como material adsorbente para varias sustancias, por ejemplo impurezas y contaminante, tales como arsenico, plomo, fluor o fosfato. La presente invencion tambien se refiere a un granulado para retirar sustancias de una solucion acuosa y un ensamble filtrante que contenga acido titanico y el granulado.

A kind of method for improving the sulfuric acid method titanium pigment quality of production

本发明涉及一种提高硫酸法钛白粉生产质量的方法，包括硫酸法制备钛白粉中的偏钛酸水洗步骤和偏钛酸漂白步骤，所述偏钛酸水洗步骤中产生的穿滤偏钛酸用于制备三价钛溶液，并用该三价钛溶液进行所述偏钛酸漂白步骤。本发明将偏钛酸水洗步骤中产生的穿滤偏钛酸用于制备漂白用三价钛溶液，既实现了穿滤偏钛酸的完全回收，同时避免了粒度较细、杂质含量高的穿滤偏钛酸对钛白粉产品质量造成影响；另外，利用穿滤偏钛酸制备三价钛溶液时，其溶解程度较高，制备的溶液中三价钛浓度高，对偏钛酸料浆的漂白效果好，也有利于提高钛白粉产品的质量。

Organic sol and solid compound based on titanium oxide and amphiphilic compound and prep. methods

本发明涉及一种有机溶胶，其特征在于包含二氧化钛粒子；有机液相和至少一种选自聚氧乙烯化烷基醚磷酸盐的两性化合物。在第一个实施方案中，所述溶胶的制备方法的特征在于其包括将所述两性化合物与有机液相混合，然后将二氧化钛粒子分散在所得混合物中。在第二个实施方案中，包括形成二氧化钛与至少一种所述两性化合物的混合物，然后将所述混合物分散在所述液相中。本发明还涉及一种固体混合物，它包括二氧化钛粒子与至少一种选自上述那些的两性化合物的混合物。

Methods of extraction of products from titanium-bearing materials

The invention relates to processes for the extraction of products from titanium-bearing materials or a composition produced in a process for the production of titanium dioxide, and more particularly, although not exclusively, extracting titanium dioxide and/or one or more other products from iron making slag.

METHOD FOR PREPARING TITANIUM DIOXIDE PIGMENT IN RUTILE FORM.

Improvements in or relating to the production of titanium pigments

A nucleous liquor for assisting the hydrolysis of titanium salt solutions is obtained by preparing a titanium-sulphuric acid solution substantially free from iron, neutralizing it with an alkaline reagent to cause precipitation, agitating in order to redissolve the precipitate and then heating to develop its nuclear properties. The iron free solution may be obtained, for instance, by dissolving a titanium ore or compound in sulphuric acid and then removing the iron, or by dissolving iron-free ortho- or metatitanic acid or purified titanyl sulphate in sulphuric acid, or by dissolving the reaction product of rutile sintered or fused with an alkali in sulphuric acid and removing iron if necessary. The alkaline reagent which may be ammonia or sodium hydroxide is preferably added in such an amount that the pH value of the solution does not exceed 2,5 and redissolution of the precipitate may be assisted by adding a neutral ionizable salt such as ammonium chloride, sodium chloride, potassium nitrate, ammonium phosphate, or sodium sulphate. The heating of the solution to develop nuclei may be carried out at temperatures below 85 DEG C. From 0,5 to 10 per cent of the nuclear liquor may p be added to a titanium salt solution, which is then hydrolyzed by boiling, and the precipitate washed and calcined to form a pigment. Specifications 310,949, [Class 1 (iii)], and 388,978 are referred to. The Specification as open to inspection under Sect. 91 includes an example relating to the preparation of a nucleus liquor from rutile. This example does not appear in the Specification as accepted.

PROCEDURE FOR THE PREPARATION OF PARTICULAR TITAN Dioxide.

Patent FR2074219A5

Organic sol and solid compound based on titanium oxide and an amphiphilic compound and methods of preparation

Photocatalyst material preparation system

一种光催化剂材料的制备系统，将二氧化钛、铝盐、氮源、铁盐、银盐、钨盐、稀土金属混合，首先把二氧化钛打浆，把、铝盐、氮源、铁盐、银盐、钨盐、稀土金属溶解，将二氧化钛、铝盐、氮源、铁盐、银盐、钨盐、稀土金属投入分散剂中混合；并真空干燥得到前驱体；其中钛、铝、氮、铁、银、钨、稀土金属元素的摩尔比为5∶(0.05～0.3)∶(2～3)∶(0.2～0.3)∶(0.4～0.6)∶(0.1～0.2)∶(0.3～0.4)，将前驱体投入到惰性气体加热炉中高温煅烧，温度800～1000℃，时间超过8小时，再将煅烧后的产物降到室温得到光催化剂复合材料。

Preparation method of sulfuric acid process titanium dioxide hydrolysis composite seed crystal

本发明公开了一种制备硫酸法钛白水解复合晶种的方法，属于硫酸法制备钛白粉领域。该方法包括：步骤一：采用硫酸钛白钛液和碱液中和制备锐钛型晶种溶液并将锐钛型晶种溶液预热至95℃～98℃；步骤二：将二氯氧钛溶液预热至88～92℃，将预热好的二氯氧钛溶液与预热好的锐钛型晶种溶液混合均匀，升温至95℃～98℃，保温90min～120min，获得锐钛型‑金红石型复合晶种溶液；步骤三：对步骤二获得的锐钛型‑金红石型复合晶种溶液进行固液分离，固液分离之后得到的固体用去离子水稀释之后用作硫酸法钛白水解复合晶种。该方法制备的复合晶种不仅稳定可以长时间保存，且具备水解晶种和煅烧晶种两种功能，煅烧前无需再添加煅烧晶种，有利地简化了硫酸法钛白制备工序。

Rutile titanium dioxide

ORGANIC SOL AND SOLIDS BASED ON TITANIUM OXYDE AND AN AMPHIPHILIC FABRIC AND METHOD OF PREPARING THEREOF

PROCESS FOR THE PRODUCTION OF TITANIUM DIOXIDE IN PARTICULATES

Titanium oxide production

Preparation of anatase titanium dioxide

A process for the preparation of anatase titanium dioxide comprises precipitating hydrous titanium oxide from an aqueous solution of a titanium sulphate by heating said aqueous solution in the presence of a nuclei suspension consisting of non-rutilising nuclei said nuclei suspension being prepared in the substantial absence of aluminium ions, and subsequently subjecting the hydrous titanium oxide formed to a calcination process in the presence of at least one potassium compound, at least one phosphorus compound and at least one aluminium compound. The potassium compound is present in an amount equivalent to between 0.1 and 0.7 per cent by weight potassium oxide calculated as K 2 O with respect to TiO 2 , the phosphorus compound is present in an amount equivalent to between 0.2 and 1.0 per cent by weight phosphorus oxide calculated as P 2 O 5 with respect to TiO 2 and the aluminium compound is present in an amount equivalent to between 0.1 and 0.5 per cent by weight alumina calculated as Al 2 O 3 with respect to TiO 2 and in the calcination process the hydrous titanium oxide is converted to anatase titanium dioxide by heating to a temperature of at least 1000°C. The anatase titanium dioxide formed has a large average crystal size in comparison to conventional anatase titanium dioxide.

Recovery of titanium from titanium bearing materials

Production and use of hydrous titanium oxide

Manufacture of titanium pigments

A kind of preparation method of rutile titanium dioxide superfine powder

本发明属于化学化工和无机非金属材料的制备领域，具体涉及一种金红石型二氧化钛超细粉的制备方法。该方法制得的金红石二氧化钛超细粉遮盖力和耐候性能比锐钛型的钛白粉要好，又提高了产品的白度。

Composite titanium dioxide pigments and methods for making the same

Device for detecting hydrolysis of titanium oxysulfate in real time and control apparatus

【課題】本発明は硫酸チタニルの加水分解のオンライン検出装置及び制御機器を提供する。 【解決手段】前記制御機器は加熱装置と、攪拌装置と、検出ユニットと、分析ユニットと、制御ユニットを含み、加熱装置と攪拌装置はそれぞれ加水分解容器内の溶液を加熱及び攪拌し、検出ユニットは加水分解容器内の溶液中に設けられ、かつ分析ユニットに接続され、溶液の反射率をオンライン検出して検出結果を分析ユニットに出力し、分析ユニットは加水分解時間に対する反射率の一次導関数を分析し、更に制御ユニットに接続されて、一次導関数に変曲点が現れる際に制御信号を制御ユニットに転送し、制御ユニットは制御信号に応じて加熱装置と攪拌装置の動作を停止させる。本発明のオンライン検出装置及び制御機器は、加水分解の灰色変換点を簡単、早速、精確、かつ実時間に判定することができ、チタン白の生産における灰色変換点の判定の自動化を実現し、製品品質を向上させることができる。 【選択図】図１

Titanium dioxide particles, method for their preparation and their use in cosmetics, varnish and surface coating

La présente invention concerne des particules de dioxyde de titane recouvertes au moins partiellement: d'une première couche d'au moins un composé du cérium et/ou du fer; et d'une deuxième couche d'au moins un oxyde, hydroxyde ou oxohydroxyde métallique, lesdites particules présentant une surface spécifique BET d'au moins 70 m2/g et une densité de l'ordre de 2,5. Elle concerne également un procédé de préparation de ces particules et leur utilisation en tant qu'agent anti-UV. The present invention relates to titanium dioxide particles covered at least partially: with a first layer of at least one compound of cerium and / or iron; and a second layer of at least one metal oxide, hydroxide or oxohydroxide, said particles having a BET specific surface of at least 70 m2 / g and a density of the order of 2.5. It also relates to a process for the preparation of these particles and their use as an anti-UV agent.

Preparation of anatase titanium dioxide

PROCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE FOR PIGMENT

Preparation of titanium dioxide

A kind of method for improving calcining seeds activity

本发明涉及一种提高煅烧晶种活性的方法，包括偏钛酸的碱溶、洗涤、酸溶、冷却步骤，在偏钛酸的碱溶步骤前进行碱中和处理；所述碱中和处理是指用碱性化合物对偏钛酸进行中和和过滤处理，降低偏钛酸中的硫酸或硫酸根含量。本发明的方法可以降低煅烧晶种生产成本，提高煅烧晶种活性。

Titanium dioxide particles, their synthesis process and their use in cosmetics, varnishes and transparent coatings

(57)【要約】 この発明は少なくとも一つのセリウム及び／又は鉄の化合物の第１層、及び少なくとも一つの金属酸化物、水酸化物又は水酸化物酸化物の第２層で部分的に被覆されており、BET比表面積が少なくとも70m 2 /gであり比重が2.5程度(+/−0.2）であって粒径が100nm以下である二酸化チタン粒子に関する。この発明はまたこれらの粒子の製造方法及びそれらを耐紫外線薬剤をして使用する方法に関する。

Rutile titanium dioxide

A process for the preparation of rutile titanium dioxide comprises heating hydrous titanium oxide which readily converts to rutile titanium dioxide until at least 99.5 per cent by weight is in the rutile crystal form. The test for ready conversion to rutile consists of heating the hydrous titanium oxide to 950°C at a rate of 1°C per minute. Suitable material is thereby converted to at least 99.0 per cent rutile by weight. The product has a very narrow particle size and crystal size distribution and is an excellent pigment.

Device for detecting hydrolysis of titanium oxysulfate in real-time

A kind of method that discarded honeycomb type denitrification catalyst prepares titanium dioxide

本发明公开了一种废弃蜂窝式脱硝催化剂制备钛白粉的方法，包括预处理、酸解、沉降除杂、晶种制备、水解制偏钛酸、制备钛白粉等步骤，本发明将废弃蜂窝式脱硝催化剂制备钛白粉与现有硫酸法制备钛白粉的生产工艺相结合，充分利用现有生产设备，减少新建厂房设备的投资，同时二氧化钛回收率高，产品符合生产要求。本发明采用外加晶种水解工艺，控制浆料的pH保持强酸性，有利于杂质的去除，水解产生的废酸能够回收利用，经济和环境效益高。

Methods of extraction of products from titanium-bearing materials

The invention relates to processes for the extraction of products from titanium-bearing materials or a composition produced in a process for the production of titanium dioxide, and more particularly, although not exclusively, extracting titanium dioxide and/or one or more other products from iron making slag.

PIGMENTAL TITANIUM DIOXIDE PRODUCTION

The method that low energy consumption produces hydrated titanium dioxide

本发明公开了一种低能耗生产水合二氧化钛的方法。本发明采用浓度为160～185g/L的钛液和外加晶种方式水解制备水合二氧化钛。该方法制备得到的水合二氧化钛粒度分布均匀，过滤速度适中，后期生产钛白粉时，大幅度降低了钛液浓缩工序蒸汽消耗，甚至取消钛液浓缩工序，从而降低钛白粉生产成本。

Manufacture of pigmentary titanium dioxide

Hydrolysis of sulfuric acid titanium solutions

硫酸法钛白粉碱溶滤液的回收利用方法

本发明涉及一种硫酸法钛白粉生产过程中副产物的处理方法，具体公开了一种硫酸法钛白粉碱溶滤液的回收利用方法。包括以下步骤：(1)将碱溶滤液进行固液分离，得到澄清滤液；(2)往澄清滤液中加入可溶性钡盐，混合均匀后过滤，得到再生碱液；(3)将再生碱液作为煅烧晶种制备工艺中的碱溶步骤用液碱原料循环使用。本发明的优点是：1)实现将碱溶滤液作为煅烧晶种制备工艺中的碱溶步骤用液碱原料循环使用；2)工艺简单，易于实施。

高品質二酸化チタンの製造方法

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

硫酸法钛白粉水解结束料中低位热回收方法及回收系统

本发明涉及一种钛白粉生产工艺及设备，具体公开了一种硫酸法钛白粉水解结束料中低位热回收方法，该方法主要通过将浓缩工序得到的浓钛液送入间壁式换热器中，与水解结束料进行间接换热，从而实现能量的转移回收。本发明还公开了硫酸法钛白粉水解结束料中低位热回收系统以便于本方案的实施。本发明的优点是：1)采用本发明的新工艺后，生产吨钛白粉可降低蒸汽消耗约0.20吨，节约新鲜水约10方；2)由于系统蒸汽消耗的降低相应使得二洗蒸汽的处理费用降低；3)方案易于实施，利于在产业上推广。

一种钛白粉的生产工艺

本申请涉及二氧化钛制备技术领域，具体公开了一种钛白粉的生产工艺。钛白粉的生产工艺包括以下步骤：（1）对钛液进行冷却结晶，然后过滤得到滤液，在92℃保温备用；（2）将滤液加入92℃的纯水中混合，经过加热水解后得到水解浆料；（3）将水解浆料冷却到63℃，然后向水解浆料中加入三氯化钛和硫酸，加热微沸60min后进行过滤，对得到的滤饼进行洗涤和干燥，然后在850℃煅烧滤饼110‑550min，待煅烧产物降温后进行研磨，得到钛白粉。本申请通过投放三氯化钛和硫酸的方式将氢氧化铁转化为亚铁离子，然后通过洗涤将亚铁离子除去，减少了三价铁对钛白粉的品质造成的影响。

一种硫酸法钛白废水综合利用方法

本发明公开了一种硫酸法钛白废水综合利用方法，包括以下步骤：S1.对偏钛酸一洗过程中产生的废水进行分段收集，分为一洗前段水和一洗后段水；S2.将一洗前段水经微孔过滤，然后降温至≤35℃；S3.将废酸、钛精矿和浓硫酸进行混合，进行酸解反应，得到酸解反应固相物，然后加入降温后的一洗前段水，使酸解反应固相物溶解，得到硫酸氧钛溶液；S4.在硫酸法钛白水解工段，水解物料二次沸腾之后，加入加热后的一洗后段水，并持续向水解物料内通入蒸汽，使水解物料温度＞100℃。本发明可充分利用硫酸法钛白废水中的硫酸，提高了水资源综合利用率，减少了新鲜水使用量，降低了硫酸法钛白生产过程中总用水量，达到了节约水资源的目的。

Organische sol und feststoff auf basis von titaniumoxyd und einem amphiphilen stoff und verfahren zur herstellung

一种硫酸法钛白水解复合晶种的制备方法

本发明公开了一种制备硫酸法钛白水解复合晶种的方法，属于硫酸法制备钛白粉领域。该方法包括：步骤一：采用硫酸钛白钛液和碱液中和制备锐钛型晶种溶液并将锐钛型晶种溶液预热至95℃～98℃；步骤二：将二氯氧钛溶液预热至88～92℃，将预热好的二氯氧钛溶液与预热好的锐钛型晶种溶液混合均匀，升温至95℃～98℃，保温90min～120min，获得锐钛型‑金红石型复合晶种溶液；步骤三：对步骤二获得的锐钛型‑金红石型复合晶种溶液进行固液分离，固液分离之后得到的固体用去离子水稀释之后用作硫酸法钛白水解复合晶种。该方法制备的复合晶种不仅稳定可以长时间保存，且具备水解晶种和煅烧晶种两种功能，煅烧前无需再添加煅烧晶种，有利地简化了硫酸法钛白制备工序。

一种高氯含量r晶种的利用方法

本发明公开了一种高氯含量R晶种的利用方法，包括以下步骤：S1.取高氯含量R晶种与硫酸法一洗偏钛酸料浆混合，然后进行压滤水洗，滤饼打浆得到R晶种料浆；S2.取硫酸法一洗偏钛酸料浆，和浓硫酸、Ti 3+ 以及步骤S1得到的所述R晶种料浆，升温进行漂白反应；S3.将漂白后的物料经过压滤、二次水洗，得到二洗偏钛酸。本发明将R晶种与一定量的一洗偏钛酸进行混合，利用一洗偏钛酸粘度小、易水洗的特性，有效降低了体系的粘度，再压滤、水洗降低R晶种中Cl ‑ 含量，降氯后的R晶种不影响活性可以直接用于偏钛酸的漂白、煅烧。

一种硫酸法钛白水解晶种制备方法

本发明属于硫酸法钛白生产技术领域，公开了一种硫酸法钛白水解晶种制备方法，该硫酸法钛白水解晶种制备方法包括：将预热后的碱液和钛液按照1︰2‑1︰5的体积比并流加入管式混合器进行反应，反应后的混合物流入晶种熟化槽进行熟化，得到硫酸法钛白水解晶种。该方法保证了晶种成核速度一致，制备的晶种粒径均匀、水解活性高，所生产的水解偏钛酸粒径分布大幅改善，不仅提高了后续偏钛酸水洗除杂效率，还大幅改善了钛白粉的粒度分布。

一种高氯含量r晶种的利用方法

本发明公开了一种高氯含量R晶种的利用方法，包括以下步骤：S1.取高氯含量R晶种与硫酸法一洗偏钛酸料浆混合，然后进行压滤水洗，滤饼打浆得到R晶种料浆；S2.取硫酸法一洗偏钛酸料浆，和浓硫酸、Ti 3+ 以及步骤S1得到的所述R晶种料浆，升温进行漂白反应；S3.将漂白后的物料经过压滤、二次水洗，得到二洗偏钛酸。本发明将R晶种与一定量的一洗偏钛酸进行混合，利用一洗偏钛酸粘度小、易水洗的特性，有效降低了体系的粘度，再压滤、水洗降低R晶种中Cl ‑ 含量，降氯后的R晶种不影响活性可以直接用于偏钛酸的漂白、煅烧。

高透明抗冲击金红石型钛白粉瓷釉料的制备方法及其应用

一种金红石型钛白粉瓷釉料的制备方法及其应用，所属无机材料生产技术领域，方法包括浓钛液的制备、偏钛酸的制备和复合钛白粉的制备；在浓钛液制备过程中，多次除杂，减少浓钛液杂质含量，在制备偏钛酸过程中采用新沉淀偏钛酸为水解晶种，在制备复合钛白粉过程中，采用石墨烯和煅烧晶种作为氧化钛结晶晶种，制备得到的氧化钛结晶粒度小，分布均匀，保持透明色，添加在瓷釉料中，不会影响瓷釉料的白度品相；石墨烯和煅烧晶种能够提高金红石型钛白粉的硬度和致密度，从而提高陶瓷或搪瓷产品的耐候性、抗冲击性、防止裂纹、防止紫外线和防水性，具有良好的实用性。

从铝土矿残渣中回收材料的方法、用于加热采矿产品的微波反应器和加热采矿产品的方法

本发明涉及一种技术上和经济上可行的以其整体形式利用所述残渣而从采矿残渣，特别是铝土矿残渣中回收金属和非金属内容物的方法。这样的方法使用微波能量、辅助浸出和步骤的逻辑排序，以便能够在技术上和经济上可行地从从铝土矿残渣，特别是来自拜耳法的残渣中提取组分。本发明还涉及一种微波反应器，其适用于进行上述方法，以及涉及一种加热采矿产品的方法。

Herstellung von Titandioxyd

一种吸附强化可见光催化低浓度VOCs二氧化钛复合材料制备方法

本发明公开一种吸附强化可见光催化低浓度VOCs二氧化钛复合材料制备方法。将稀盐酸溶液和四氯化钛混合，再投加晶体二氧化钛，搅拌并离心，所得固体自然风干或烘干，煅烧，得到种晶二氧化钛固体；激烈搅拌，将制得的种晶二氧化钛固体和4‑乙基苯胺加入到无水乙醇中，将钛酸丁酯加入到上述溶液，再加蒸馏水搅拌后放入反应釜进行水热反应，降温并离心得到固体先用乙醇‑盐酸溶液酸洗，再水洗至中性离心，烘干得晶体多孔复合二氧化钛材料。本发明采用4‑乙基苯胺作为模板剂，利用低温水热法合成了微孔‑晶体复合二氧化钛，制备的材料同时具有较好的对可见光的吸收性和较丰富的微孔结构和晶体结构，能够充分利用可见光并有优异的吸附降解效果。

一种吸附强化可见光催化低浓度VOCs二氧化钛复合材料制备方法

本发明公开一种吸附强化可见光催化低浓度VOCs二氧化钛复合材料制备方法。将稀盐酸溶液和四氯化钛混合，再投加晶体二氧化钛，搅拌并离心，所得固体自然风干或烘干，煅烧，得到种晶二氧化钛固体；激烈搅拌，将制得的种晶二氧化钛固体和4-乙基苯胺加入到无水乙醇中，将钛酸丁酯加入到上述溶液，再加蒸馏水搅拌后放入反应釜进行水热反应，降温并离心得到固体先用乙醇-盐酸溶液酸洗，再水洗至中性离心，烘干得晶体多孔复合二氧化钛材料。本发明采用4-乙基苯胺作为模板剂，利用低温水热法合成了微孔-晶体复合二氧化钛，制备的材料同时具有较好的对可见光的吸收性和较丰富的微孔结构和晶体结构，能够充分利用可见光并有优异的吸附降解效果。

Process for recovering materials from bauxite residue, microwave reactor for heating mining products and method for heating a mining product

This invention refers to a technically and economically feasible process for recovery of metallic and non-metallic relevant contents from mining residues, particularly the bauxite residue, by using it in its whole. Such process route uses energy from microwaves, assisted leaching and logic sequencing of steps that allow a technically and economically feasible removal of components from the bauxite residue, particularly the residue from Bayer process. This invention still refers to a microwave reactor that is appropriate to perform the above-mentioned process, as well as to a method for heating a mining product.

用偏钛酸制备高活性双效晶种的方法

本发明公开了一种钛白中间产物偏钛酸制备高活性双效晶种的方法，以偏钛酸为原料，制备硫酸钛清液，冷却，将其稀释液加入到碱液中，控制pH值为7.5~9.0，所得产物过滤后洗涤，二次洗涤，再用氢氟酸与盐酸在较低温度下短时间酸溶，得到具有水解晶种性能和煅烧晶种性能的高活性双效晶种；本方法所需的钛源来自于钛白粉生产的中间产物，成本低廉，生产稳定；晶种中，非金红石促进型和金红石促进型晶种比例适宜，具有水解晶种和煅烧晶种的双重性能；用于钛白生产时，不需另行生产煅烧晶种，减少漂白时加煅烧晶种的工序，缩短漂白时间，同时提高漂洗的效率；本方法制备晶种活性高，只需添加2%即可满足水解和煅烧要求，性能优异。

Process for recovering materials from bauxite residue, microwave reactor for heating mining products and method for heating a mining product

This invention refers to a technically and economically viable process for recovery of relevant metallic and non-metallic contents from mining residues, particularly the bauxite residue, using it in its integral form. Such a process route uses energy from microwaves, assisted leaching and logic sequencing of steps that allow a technically and economically viable removal of components from the bauxite residue, particularly the residue from the Bayer process. The invention also refers to a microwave reactor that is appropriate for performing the above-mentioned process, as well as to a method for heating a mining product.

Pigments complexes à base de bioxyde de titane et procédé pour la fabrication

一种水解晶种粒度的调控方法及水解晶种制备方法

本发明涉及一种水解晶种粒度调控方法，水解晶种由含钛溶液与氢氧化钠溶液混合，经预热、熟化保温工序制备而成，方法包含：确定含钛溶液的钛液指标，钛液指标包含TiO 2 浓度、F值和铁钛比；增加至少一项钛液指标的值以获得粒径增大的水解晶种；或者降低至少一项钛液指标的值以获得粒径减小的水解晶种。该方法通过调整含钛溶液的含钛溶液指标等参数来实现水解晶种粒度的精准调控，解决了含钛溶液外加晶种仅靠稳定性判定晶种质量，导致晶种粒度分布差异大，不能准确表征晶种质量的技术难题。本发明同时提供一种使用该方法对粒度进行调控的水解晶种制备方法。

水解外加晶种质量的在线判定方法

本发明公开了一种水解外加晶种质量的在线判定方法。所述方法包括：获取系数(K)；获取外加晶种的制备物在加热前的初始浊度(Tu 0 )，所述制备物包括钛液与碱液的混合物；获取制备物升温至预设温度的平均升温速率(V 1 )；获取制备物在保温阶段的浊度增量(Tu 1 )；基于所述系数(K)、所述初始浊度(Tu 0 )、所述平均升温速率(V 1 )以及所述浊度增量(Tu 1 )，计算目标浊度(Tu T )；获取制备物的浊度的实时检测值，基于预设时间内制备物的浊度均不低于所述目标浊度(Tu T )，指示制备物被制成合格晶种。本发明能够在水解外加晶种制备过程中对晶种的质量进行在线判定，判定的实时性、准确性好，还能够进行智能化判定，避免人工干扰。

Process for recovering materials from bauxite residue, microwave reactor for heating mining products and method for heating a mining product

The present invention refers to a technically and economically viable process for recovery of metallic and non-metallic content of interest from mining residues, particularly bauxite residue, using it in its integral form. Such a process uses energy from microwaves, assisted leaching and logical sequencing of steps to allow a technically and economically viable extraction of components from the bauxite residue, particularly the residue from the Bayer process. The invention also refers to a microwave reactor that is appropriate for performing the above-mentioned process, as well as to a method for heating a mining product.

一种钛白粉用浓缩钛液的制备方法以及装置

本发明涉及钛白粉制备设备领域，具体涉及一种二次蒸汽再利用制备多效浓缩钛液的装置，包括依次设置有薄膜蒸发器、预热器、一级预热器、蒸发器、脱盐水预热器、混合冷凝器。本发明开发了石墨管和石墨构件的表面处理技术，与钛管相比孔壁更光滑，不易结垢及堵塞，制成的石墨换热器运行稳定，换热面积大、换热效率高，效果良好。符合国家节能减排要求，增加了企业的竞争生存能力。

Processo de recuperação de materiais derivados de resíduo de bauxita, reator de micro-ondas para aquecimento de produtos de mineração, e método de aquecimento de um produto de mineração

A presente invenção refere-se a um processo técnico e economicamente viável de recuperação dos conteúdos metálicos e não metálicos relevantes de resíduos de mineração, e em particular o resíduo de bauxita, utilizando-o em de forma integral. Tal rota de processo utiliza energia de micro-ondas, lixiviação assistida e um sequenciamento lógico de etapas para 0 que seja possível retirar com viabilidade técnica e econômica os componentes do resíduo de bauxita, particularmente aquele provindo do processo Bayer. A presente invenção se refere ainda a um reator de micro-ondas adequado para execução do processo supracitado, e a um método de aqueci-mento de um produto de mineração.

Processo de recuperação de materiais de resíduo de bauxita

PROCESSOS DE RECUPERAÇÃO DERIVADOS DE PRODUTOS DE MINERAÇÃO. A presente invenção refere- se a processos de tratamento/beneficiamento de produtos e resíduos de mineração para recuperação de derivados de interesse de maneira eficiente e ecológica, fa-zendo uso de etapas particulares e pelo uso ou não de reator de micro-ondas para tratamento/beneficiamento do produto de mineração.

Process for recovering materials from bauxite residue, microwave reactor for heating mining products and method for heating a mining product

The present invention refers to a technically and economically viable process for recovery of metallic and non-metallic content of interest from mining residues, particularly bauxite residue, using it in its integral form. Such a process uses energy from microwaves, assisted leaching and logical sequencing of steps to allow a technically and economically viable extraction of components from the bauxite residue, particularly the residue from the Bayer process. The invention also refers to a microwave reactor that is appropriate for performing the above-mentioned process, as well as to a method for heating a mining product.

Processo de recuperação de materiais derivados de resíduo de bauxita, reator de micro-ondas para aquecimento de produtos de mineração, e método de aquecimento de um produto de mineração

A presente invenção refere-se a um processo técnico e economicamente viável de recuperação dos conteúdos metálicos e não metálicos relevantes de resíduos de mineração, e em particular o resíduo de bauxita, utilizando-o em de forma integral. Tal rota de processo utiliza energia de micro-ondas, lixiviação assistida e um sequenciamento lógico de etapas para 0 que seja possível retirar com viabilidade técnica e econômica os componentes do resíduo de bauxita, particularmente aquele provindo do processo Bayer. A presente invenção se refere ainda a um reator de micro-ondas adequado para execução do processo supracitado, e a um método de aqueci-mento de um produto de mineração.

一种硫酸法钛白废水综合利用方法

本发明公开了一种硫酸法钛白废水综合利用方法，包括以下步骤：S1.对偏钛酸一洗过程中产生的废水进行分段收集，分为一洗前段水和一洗后段水；S2.将一洗前段水经微孔过滤，然后降温至≤35℃；S3.将废酸、钛精矿和浓硫酸进行混合，进行酸解反应，得到酸解反应固相物，然后加入降温后的一洗前段水，使酸解反应固相物溶解，得到硫酸氧钛溶液；S4.在硫酸法钛白水解工段，水解物料二次沸腾之后，加入加热后的一洗后段水，并持续向水解物料内通入蒸汽，使水解物料温度＞100℃。本发明可充分利用硫酸法钛白废水中的硫酸，提高了水资源综合利用率，减少了新鲜水使用量，降低了硫酸法钛白生产过程中总用水量，达到了节约水资源的目的。

一种二氧化钛及其制备方法和应用

本发明公开了一种二氧化钛及其制备方法和应用，将醇类、固体碱、多氯甲烷和尿素按质量比为1：0.2：1：0.1配制成混合溶液，0.5～100克硫酸氧钛和10～1000毫升混合溶液混合均匀，在80～200℃下反应1～7天；生成的产物经甲醇充分洗涤后，在50～100℃下常压干燥1～40h，得到二氧化钛催化材料。本发明不仅操作简便、成本低、可以大量合成二氧化钛，而且制备的二氧化钛催化材料为锐钛矿相，比表面达400m 2 /g以上，纯度高、催化活性高、性能稳定，在可见光照射条件下12小时对甲苯和二甲苯的降解率达80%以上，对甲醛的降解率达90%以上。

一种采用氯化法钛白副产二氯氧钛溶液制备煅烧晶种的方法

本发明公开了一种采用氯化法钛白副产二氯氧钛溶液制备煅烧晶种的方法，包括以下步骤：S1.取碱洗后滤饼打浆，得到料浆Ⅰ，加入二氯氧钛溶液，调整pH为3.5～5，得到料浆Ⅱ；S2.将料浆Ⅱ以0.3～0.5℃/min速率升温至55～65℃，然后加入盐酸溶液，以0.3～0.5℃/min速率升温至沸腾，保持沸腾2～4h后，加水稀释至物料中二氧化钛含量为90～120g/L，得到煅烧晶种。本申请方法可以实现二氯氧钛中盐酸和TiO 2 的回收利用，减少了废水处理的成本；本发明操作简单，工艺流程短，易于实现工业化生产。

水解外加晶种质量的在线判定方法

本发明公开了一种水解外加晶种质量的在线判定方法。所述方法包括：获取系数(K)；获取外加晶种的制备物在加热前的初始浊度(Tu 0 )，所述制备物包括钛液与碱液的混合物；获取制备物升温至预设温度的平均升温速率(V 1 )；获取制备物在保温阶段的浊度增量(Tu 1 )；基于所述系数(K)、所述初始浊度(Tu 0 )、所述平均升温速率(V 1 )以及所述浊度增量(Tu 1 )，计算目标浊度(Tu T )；获取制备物的浊度的实时检测值，基于预设时间内制备物的浊度均不低于所述目标浊度(Tu T )，指示制备物被制成合格晶种。本发明能够在水解外加晶种制备过程中对晶种的质量进行在线判定，判定的实时性、准确性好，还能够进行智能化判定，避免人工干扰。

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