SU186408A1 - METHOD OF SILICON SURFACE - Google Patents
METHOD OF SILICON SURFACEInfo
- Publication number
- SU186408A1 SU186408A1 SU941720A SU941720A SU186408A1 SU 186408 A1 SU186408 A1 SU 186408A1 SU 941720 A SU941720 A SU 941720A SU 941720 A SU941720 A SU 941720A SU 186408 A1 SU186408 A1 SU 186408A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- silica
- silicon surface
- carbon
- silicon carbide
- mixture
- Prior art date
Links
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title 1
- 229910052710 silicon Inorganic materials 0.000 title 1
- 239000010703 silicon Substances 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 239000000377 silicon dioxide Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N Silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N Silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003738 black carbon Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000011044 quartzite Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Description
Изобретение относитс к области производства абразивных материалов и совершенствует процесс подготовки шихты перед восстановлением кремнезема и образованием карбида кремни .The invention relates to the production of abrasive materials and improves the process of preparing the mixture before the recovery of silica and the formation of silicon carbide.
Известные способы подготовки шихты, основанные на гранул ции измельченного кремнезема с последующим обволакиванием образовавшихс гранул мелкоизмельченным коксом путем окатывани , трудоемки, не обеспечивают равномерного распределени углерода в шихте и достаточного его сцеплени с кремнеземом , вследствие чего процесс карбидизации характеризуетс значительным, уносом газообразной моноокиси кремни , а получаемый карбид кремни загр зн етс примес ми, содержашимис в золе восстановителей.Known methods for preparation of blends based on granulation milled silica followed enswathing the formed granules finely divided coke by pelletization, time consuming, do not provide uniform distribution of carbon in the mixture and sufficient of its engagement with the silica, whereby carbonization process is characterized by significant entrainment of gaseous silicon monoxide, and The resulting silicon carbide is contaminated with impurities contained in the reducing agent ash.
Предлагаемый способ технологически более прост, свободен от перечисленных недостатков и позвол ет получить конечный продукт более высокого качества.The proposed method is technologically simpler, free from the listed drawbacks and allows to obtain a higher quality final product.
С этой целью кремнезем (кварцевый песок или измельченный кварцит) науглероживают в аппаратах «кип ш,его сло сажистым углеродом за счет пиролиза углеводородных газов , подаваемых в аппарат в качестве псевдоожижаюшего агента при температурах нагрева кремнезема до 800-1150°С.To this end, silica (quartz sand or crushed quartzite) is carbonized in boilers, its layer with black carbon due to the pyrolysis of hydrocarbon gases supplied to the apparatus as a fluidizing agent at temperatures of silica heating to 800-1150 ° C.
Углерод обволакивает частицы кремнезема, создава углеродную оболочку, равномерно распределенную по всей их поверхности.Carbon envelops silica particles, creating a carbon shell uniformly distributed over their entire surface.
Предмет изобретени Subject invention
Способ науглероживани кремнезема перед карбидизацией, отличающийс тем, что, с целью интенсификации процесса карбидизации и повышени качества получаемого карбида кремни , кремнезем в виде измельченной шихты обрабатывают углеводородными газами при температурах от 800 до в реакторах кип ш,его сло ..The method of carburizing silica before carbidization, characterized in that, in order to intensify the process of carbidization and improve the quality of the silicon carbide produced, silica in the form of a crushed mixture is treated with hydrocarbon gases at temperatures from 800 to in boilers and its layer.
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU833632092A Addition SU1199995A2 (en) | 1983-07-01 | 1983-07-01 | Device for part coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU186408A1 true SU186408A1 (en) |
Family
ID=
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327066A (en) * | 1979-11-14 | 1982-04-27 | Tokyo Shibaura Denki Kabushiki Kaisha | Method of preparing silicon carbide |
| US4364974A (en) * | 1980-06-21 | 1982-12-21 | International Minerals & Chemical Luxembourg Societe Anonyme | Method of producing an intermediate in the production of silicon or silicon carbide |
| EP0147884A2 (en) * | 1983-12-23 | 1985-07-10 | Metallgesellschaft Ag | Process for producing coke-coated quartz pellets |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327066A (en) * | 1979-11-14 | 1982-04-27 | Tokyo Shibaura Denki Kabushiki Kaisha | Method of preparing silicon carbide |
| US4364974A (en) * | 1980-06-21 | 1982-12-21 | International Minerals & Chemical Luxembourg Societe Anonyme | Method of producing an intermediate in the production of silicon or silicon carbide |
| EP0147884A2 (en) * | 1983-12-23 | 1985-07-10 | Metallgesellschaft Ag | Process for producing coke-coated quartz pellets |
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