[go: up one dir, main page]

WO1991001270A1 - Procede pour obtenir de la poudre de carbure de silicium - Google Patents

Procede pour obtenir de la poudre de carbure de silicium Download PDF

Info

Publication number
WO1991001270A1
WO1991001270A1 PCT/SU1989/000196 SU8900196W WO9101270A1 WO 1991001270 A1 WO1991001270 A1 WO 1991001270A1 SU 8900196 W SU8900196 W SU 8900196W WO 9101270 A1 WO9101270 A1 WO 9101270A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixture
brown
magnesium
ore
carbide powder
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/SU1989/000196
Other languages
English (en)
Russian (ru)
Inventor
Alexandr Grigorievich Merzhanov
Inna Petrovna Borovinskaya
Sos Sarkisovich Mamian
Georgy Vissarionovich Mikaberidze
Vladimir Ivanovich Vershinnikov
Georgy Ferdinandovich Tavadze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institut Strukturnoi Makrokinetiki Akademii Nauk
Original Assignee
Institut Strukturnoi Makrokinetiki Akademii Nauk
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 Institut Strukturnoi Makrokinetiki Akademii Nauk filed Critical Institut Strukturnoi Makrokinetiki Akademii Nauk
Priority to PCT/SU1989/000196 priority Critical patent/WO1991001270A1/fr
Publication of WO1991001270A1 publication Critical patent/WO1991001270A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/90—Carbides
    • C01B32/914—Carbides of single elements
    • C01B32/956—Silicon carbide
    • C01B32/963—Preparation from compounds containing silicon
    • C01B32/97—Preparation from SiO or SiO2

Definitions

  • the described method is distinguished by the length of time due to the necessity of grinding the brown and brown carbide. Received a spare part of the battery for a short period of time and a group of components. The result of the lack of efficient operation in the upper layers of the mixture when it is burnt does not result in a complete mixture
  • the proposed method makes it possible to receive a generous, comfortable kit for the interior, in the case of a non-existent part of the unit.
  • - 3 - The method is distinguished by a high efficiency due to the short duration of the process and low energy consumption.
  • ⁇ e ⁇ mendue ⁇ sya in ⁇ aches ⁇ ve ⁇ b ⁇ gaschenn ⁇ y ⁇ emnev ⁇ y ⁇ udy is ⁇ lz ⁇ va ⁇ ⁇ va ⁇ tsi ⁇ , and dia ⁇ mi ⁇ ⁇ emnezem and dshya ⁇ susches ⁇ - claimed in ⁇ tsessa g ⁇ eniya ⁇ imaln ⁇ m ⁇ ezhime ⁇ e ⁇ m ⁇ b ⁇ a- b ⁇ u e ⁇ z ⁇ e ⁇ miches ⁇ y mixture ⁇ susches ⁇ vlya ⁇ ⁇ i pressure ⁇ Pa 0.05-1. It is expedient for the separation of a wide variety of carbohydrates of the brown and slag to be excreted in other mineral acid.
  • the structure and the quality of the available bulk product of the bed is shared with the external power supply, and it is free of charge for the user.
  • To increase the thermal efficiency of the mixture it is proposed to add magnesium, brown oxide or enriched brown ore, containing 87-98% by weight of earth and 5-%, to the mixture.
  • magnesium silicates which remain in the molybdenum carbide, eating its phase composition.
  • An increase in magnesium content of more than 44 wt.% Results in the rapid evaporation of excess magnesium, which does not ensure the required dispersion of particles.
  • the endothermic process of the evaporation of magnesium may decrease
  • the density of the organic mixture should be in the range of 1.04-1.63 g / cm 3 . At a rate of less than 1.04 g / cm 3, the combustion process is due to a lack of contact with particles
  • the best embodiment of the invention 5 Prepares an exothermic mixture of powders of 4.98 kg of oxide of oxide 4.03 kg of magnesium and consumes no waste.
  • the mixture obtained is compacted by a density of 1.2 g / cm 3 : it is placed in a process, which is 0 and does not overshoot. After this treatment, they fill in an aromatic and local initiate an erosive mixture with an additional volumum spiral.
  • the combustion operation is carried out at a pressure of 0.1 psi. Combustion is dispersed in the mixture for 5 internal energy sources of the original components.
  • the burning capacity is 2030 ° ⁇ .
  • the invention will find application in the industrial metallurgy for the manufacture of compact refractory materials, worn out materials.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Le procédé consiste à préparer un mélange exothermique de poudres d'oxyde de silicium ou de minerai concentré de silicium, magnésium ou carbone, dans les proportions suivantes des constituants, en pour cent en poids: oxyde de silicium ou minerai concentré de silicium 45-55, magnésium 36-44, carbone le solde. Le mélange est ensuite concentré jusqu'à obtention d'une masse volumique de 1,04-1,63 g/cm3 et soumis au traitement thermique dans un régime de calcination sous une pression de 0,05-1 MPa, avec séparation ultérieure de la poudre de carbure de silicium et des scories au moyen d'un acide minéral.
PCT/SU1989/000196 1989-07-14 1989-07-14 Procede pour obtenir de la poudre de carbure de silicium Ceased WO1991001270A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SU1989/000196 WO1991001270A1 (fr) 1989-07-14 1989-07-14 Procede pour obtenir de la poudre de carbure de silicium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SU1989/000196 WO1991001270A1 (fr) 1989-07-14 1989-07-14 Procede pour obtenir de la poudre de carbure de silicium

Publications (1)

Publication Number Publication Date
WO1991001270A1 true WO1991001270A1 (fr) 1991-02-07

Family

ID=21617516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SU1989/000196 Ceased WO1991001270A1 (fr) 1989-07-14 1989-07-14 Procede pour obtenir de la poudre de carbure de silicium

Country Status (1)

Country Link
WO (1) WO1991001270A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2401801C2 (ru) * 2008-12-09 2010-10-20 Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Химических Реактивов И Особо Чистых Химических Веществ "Фгуп Иреа" Способ обработки шлифовальных порошков
RU2407609C1 (ru) * 2009-05-04 2010-12-27 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" Способ очистки нанопорошка карбида кремния

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910059C2 (de) * 1978-03-15 1982-05-19 Suzuki, Hiroshige, Tokyo Verfahren zur Herstellung von feinteiligem Siliziumkarbid sowie dessen Verwendung zur Herstellung von hochdichten Sinterkörpern
JPS615645B2 (fr) * 1982-07-09 1986-02-20 Fumio Hori
JPS6146403B2 (fr) * 1979-04-16 1986-10-14 Nippon Tungsten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910059C2 (de) * 1978-03-15 1982-05-19 Suzuki, Hiroshige, Tokyo Verfahren zur Herstellung von feinteiligem Siliziumkarbid sowie dessen Verwendung zur Herstellung von hochdichten Sinterkörpern
JPS6146403B2 (fr) * 1979-04-16 1986-10-14 Nippon Tungsten
JPS615645B2 (fr) * 1982-07-09 1986-02-20 Fumio Hori

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2401801C2 (ru) * 2008-12-09 2010-10-20 Государственный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Химических Реактивов И Особо Чистых Химических Веществ "Фгуп Иреа" Способ обработки шлифовальных порошков
RU2407609C1 (ru) * 2009-05-04 2010-12-27 Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" Способ очистки нанопорошка карбида кремния

Similar Documents

Publication Publication Date Title
CN1327549C (zh) 氢存储粉末和制备该粉末的方法
CN101589480B (zh) 热电转换材料、其制造方法及热电转换元件
CN102333722A (zh) 用于生成氢的组合物和方法
WO1982000458A1 (fr) Procede d'obtention de diamants et/ou de produits modifies semblables aux diamants a partir de nitrure de bore
CN113174506A (zh) 适于镁锂合金的精炼熔剂及其制备方法
CN110357052A (zh) 一种通过金属还原制备氮化硅粉末的方法
Gotor et al. Combustion synthesis of TiN induced by high-energy ball milling of Ti under nitrogen atmosphere
US3384463A (en) Graphite metal body composite
Li et al. Molten salt-enhanced production of hydrogen by using skimmed hot dross from aluminum remelting at high temperature
JPH02194103A (ja) アルカリ電池
EP0377751A4 (en) Method of obtaining silicon nitride with high alpha-phase content
WO1991001270A1 (fr) Procede pour obtenir de la poudre de carbure de silicium
JP6984628B2 (ja) 還元鉄粉の製造方法
JPH0542361B2 (fr)
US5171359A (en) Refractory metal SWARF composition
CA1157626A (fr) Methode d'epistaxie de diamants
Yeşiltepe et al. RESEARCH PAPER PRODUCTION OF COMPOSITE PELLETS FROM WASTE COFFEE GROUNDS, MILL SCALE AND WASTE PRIMARY BATTERY TO PRODUCE FERROMANGANESE; A ZERO WASTE APPROACH
US4543197A (en) Process for producing magnetic metallic oxide
AU2004261886B2 (en) Nickel metal and process for producing the same
NO753460L (fr)
CN111575562A (zh) 镁合金铸体、其制备方法及其用途
WO1991013044A1 (fr) Matiere cuite nitrifiee a base de chrome et son procede d'obtention
JPH07268503A (ja) アルミドロスの安定化方法
WO1991004227A1 (fr) Procede d'obtention de bore sous forme de poudre
JP2004225108A (ja) 転炉内及び溶滓鍋内のフォーミングスラグ鎮静材

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BG FI HU JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE