WO2004054930A1 - Procede de fabrication de corindon finement cristallin - Google Patents

Procede de fabrication de corindon finement cristallin Download PDF

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Publication number
WO2004054930A1
WO2004054930A1 PCT/RU2003/000559 RU0300559W WO2004054930A1 WO 2004054930 A1 WO2004054930 A1 WO 2004054930A1 RU 0300559 W RU0300559 W RU 0300559W WO 2004054930 A1 WO2004054930 A1 WO 2004054930A1
Authority
WO
WIPO (PCT)
Prior art keywords
aluminum
compounds
κορunda
fact
corundum
Prior art date
Application number
PCT/RU2003/000559
Other languages
English (en)
Russian (ru)
Inventor
Marina Nikolaevna Danchevskaya
Yury Dmitrievich Ivakin
Sergey Nikolaevich Torbin
Georgy Pavlovich Panasiuk
Igor Leonidovich Voroshilov
Viktor Nikolaevich Belan
Original Assignee
Marina Nikolaevna Danchevskaya
Yury Dmitrievich Ivakin
Sergey Nikolaevich Torbin
Georgy Pavlovich Panasiuk
Igor Leonidovich Voroshilov
Viktor Nikolaevich Belan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marina Nikolaevna Danchevskaya, Yury Dmitrievich Ivakin, Sergey Nikolaevich Torbin, Georgy Pavlovich Panasiuk, Igor Leonidovich Voroshilov, Viktor Nikolaevich Belan filed Critical Marina Nikolaevna Danchevskaya
Publication of WO2004054930A1 publication Critical patent/WO2004054930A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/447—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by wet processes
    • C01F7/448—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by wet processes using superatmospheric pressure, e.g. hydrothermal conversion of gibbsite into boehmite
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/41—Particle morphology extending in three dimensions octahedron-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/51—Particles with a specific particle size distribution
    • C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Definitions

  • the invention is available for use in materials for ceramics and abrasive tools and may be used to neglect the risk of neglect.
  • ⁇ - ⁇ 1 2 0 3 Obtained by this method of using ⁇ - ⁇ 1 2 0 3, the required commercially available agglomerated particles are irrelevant.
  • the use of ⁇ - ⁇ 1 2 0 3 is grinded and then classified at dry and / or wet speeds, often with the use of special allowance on Sep. 11, 1998, 09 Sep 28, 1988 1/68].
  • the plant is energy-saving and energy-efficient, which is a large part of the small operations and includes high-temperature firing.
  • This method does not use the synthesizing process to regulate the size of the received band.
  • the method of radiation ⁇ - ⁇ 1 2 0 3 includes the original hydrothermal treatment of a mixture of aluminum hydroxide and a base at a temperature of 370 - 450 ° ⁇ and a pressure of 10.0 - 50.0 ⁇ . ⁇ the mixture is additionally supplied with a chrome or biochemate of an alkali metal.
  • a well-known method is the impossibility of regulating the size of the synthesized part of the system [Patent of the Russian Federation 7/07, 02/07, 02/07].
  • P ⁇ s ⁇ avlennaya task ⁇ eshae ⁇ sya ⁇ em, ch ⁇ ⁇ zayavlyaem ⁇ mu s ⁇ s ⁇ bu ⁇ lucheniya mel ⁇ is ⁇ alliches ⁇ g ⁇ ⁇ unda, aluminum gid ⁇ sid (gid ⁇ a ⁇ gilli ⁇ ) or aluminum ⁇ sigid ⁇ sid (bemi ⁇ ) ⁇ edva ⁇ i ⁇ eln ⁇ ⁇ dve ⁇ gayu ⁇ ⁇ e ⁇ m ⁇ b ⁇ ab ⁇ e v ⁇ zdu ⁇ e ⁇ i ⁇ em ⁇ e ⁇ a ⁇ u ⁇ e at 310 - 1200 ° C or gid ⁇ e ⁇ maln ⁇ y ⁇ b ⁇ ab ⁇ e in av ⁇ lave ⁇ i 150-300 ° C and za ⁇ em ⁇ dve ⁇ gayu ⁇ Thermal treatment at a temperature of 380-450 ° C and a pressure of 3.0-40
  • a significant significant difference of the claimed technical solution is the direct treatment of aluminum hydroxide (hydride) or 4 aluminum hydroxide (boehmite), a preceding stage of the synthesis in a severe fluid, where the formation of the product is prevented.
  • the resulting gel is dried and processed in one of the ways that we have provided for receiving the unit with a separate size of the system.
  • the doping agent is introduced in the form of an oxide or a solution of it in the original raw materials before the start of the synthesis, or after food from the by-products of food
  • the suspension is placed in the autoclave liner.
  • the volume of the autoclave is 17 cm 3 .
  • the autoclave is pressurized and heated to 270 ° C, and at the same time the autoclave lasts for 24 hours. Then raise the temperature to 420 ° C and set the steam to
  • ⁇ 25 ⁇ Pa. These conditions are subject to an autoclave of 48 hours. The autoclave then cools and removes the synthesis product. It provides a manganese-alloyed fine crystalline metal oxide with a size of 300-400 microns.
  • EXAMPLE 3 8 g of aluminum hydroxide - ⁇ 1 ( ⁇ ) 3 - a hydrolitic hydrate accommodates an autoclave insert. On the bottom of the autoclave, 2 ml of distilled water is poured out of the insert. Autoclave is pressurized and heated
  • GD00 Aluminum Hydroxide (Hydrogillite) of the Pikalevsky Alumina Refinery. The content of fractions less than 63 ⁇ m is 95%.
  • ⁇ DG is a small-dispersed aluminum hydroxide (hydraulic mud) of the Pikalevskoe clay-ore plant.
  • the content of fractions less than 20 ⁇ m is 96%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

L'invention appartient au domaine de fabrication d'abrasif et peut s'utiliser dans la fabrication de corindon pur ou dopé finement cristallin (α-Al2O3) avec des cristaux de taille différent entre 0,3 et 400 microns, bien taillé et présentant un habitus correct. La synthèse de corindon finement cristallin se fait par le traitement thermique successif d'hydroxyde d'aluminium (hydroargillite) ou d'oxyhydroxyde d'aluminium (de boehmite) dans l'air et/ou dans un milieu hydrothermique puis dans un fluide aqueux supercritique. Pour obtenir le corindon cristallin lors d'une synthèse, on peut ajouter dans un milieu de réaction une substance comprenant un élément dopant. Le procédé de l'invention permet de fabriquer du corindon présentant une répartition étroite en terme de taille des cristaux.
PCT/RU2003/000559 2002-12-17 2003-12-16 Procede de fabrication de corindon finement cristallin WO2004054930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2002133935/15A RU2229441C1 (ru) 2002-12-17 2002-12-17 Способ получения мелкокристаллического корунда
RU2002133935 2002-12-17

Publications (1)

Publication Number Publication Date
WO2004054930A1 true WO2004054930A1 (fr) 2004-07-01

Family

ID=32589756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2003/000559 WO2004054930A1 (fr) 2002-12-17 2003-12-16 Procede de fabrication de corindon finement cristallin

Country Status (2)

Country Link
RU (1) RU2229441C1 (fr)
WO (1) WO2004054930A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2622133C1 (ru) * 2016-06-21 2017-06-13 Федеральное государственное бюджетное учреждение науки Институт общей и неорганической химии им. Н.С. Курнакова Российской академии наук (ИОНХ РАН) Способ получения керамического прекурсора для синтеза лейкосапфира

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394500A1 (fr) * 1989-04-17 1990-10-31 H.C. Starck GmbH & Co. KG Procédé pour la préparation de corps frittes en alumine alpha
RU2092434C1 (ru) * 1990-12-21 1997-10-10 Атошем Способ очистки белого фосфора и устройство для его осуществления
RU2093464C1 (ru) * 1996-05-22 1997-10-20 Химический факультет МГУ им.М.В.Ломоносова Способ получения мелкокристаллического корунда
US6197277B1 (en) * 1995-08-24 2001-03-06 Ykk Corporation Process for producing alumina particles having high dispersibility and plasticity

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0394500A1 (fr) * 1989-04-17 1990-10-31 H.C. Starck GmbH & Co. KG Procédé pour la préparation de corps frittes en alumine alpha
RU2092434C1 (ru) * 1990-12-21 1997-10-10 Атошем Способ очистки белого фосфора и устройство для его осуществления
US6197277B1 (en) * 1995-08-24 2001-03-06 Ykk Corporation Process for producing alumina particles having high dispersibility and plasticity
RU2093464C1 (ru) * 1996-05-22 1997-10-20 Химический факультет МГУ им.М.В.Ломоносова Способ получения мелкокристаллического корунда

Also Published As

Publication number Publication date
RU2229441C1 (ru) 2004-05-27

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