JP6489807B2 - 電気抵抗炉及びこれを用いた炭化珪素の製造方法 - Google Patents
電気抵抗炉及びこれを用いた炭化珪素の製造方法 Download PDFInfo
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- JP6489807B2 JP6489807B2 JP2014239019A JP2014239019A JP6489807B2 JP 6489807 B2 JP6489807 B2 JP 6489807B2 JP 2014239019 A JP2014239019 A JP 2014239019A JP 2014239019 A JP2014239019 A JP 2014239019A JP 6489807 B2 JP6489807 B2 JP 6489807B2
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- bottom wall
- furnace
- silicon carbide
- raw material
- wall
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims description 49
- 229910010271 silicon carbide Inorganic materials 0.000 title claims description 48
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000002994 raw material Substances 0.000 claims description 54
- 238000010438 heat treatment Methods 0.000 claims description 41
- 230000009970 fire resistant effect Effects 0.000 claims description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229910052956 cinnabar Inorganic materials 0.000 description 1
- 239000011300 coal pitch Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 229910002026 crystalline silica Inorganic materials 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
炉本体11として、寸法が1500mm×2200mm×1000mmであり、耐火煉瓦製のものを用意した。電極12は、炉本体11の床面から650mmの高さに位置していた。
Claims (3)
- 底壁、前記底壁の前後端部にそれぞれ形成された前後壁、並びに前記底壁の左右方向端部に形成され前記前後壁の間に形成された側壁からなる炉本体と、前記前後壁にそれぞれ取り付けられた電極とを備えた電気抵抗炉であって、
少なくとも、前記電極同士を結ぶ直線を中心線とし、前記底壁又は前記側壁の内側面の何れか近い面の内側面と外周面が接する円筒形領域の外側と前記炉本体との間の領域に、耐熱温度が1500℃以上の高耐火性部材を備え、
前記高耐火性部材はブロック状であり、前記底壁の上に積み重ねて構成されていることを特徴とする電気抵抗炉。 - 前記高耐火性部材の前後方向断面の内側はU字形状であり、前記底壁の上に設置されて構成されていることを特徴とする請求項1に記載の電気抵抗炉。
- 底壁、前記底壁の前後端部に形成されたそれぞれ前壁及び後壁、並びに前記底壁の左右方向端部に形成され前記前壁と後壁との間に形成された側壁からなる炉本体と、前記前壁と前記後壁にそれぞれ取り付けられた電極とを備え、前記電極同士を結ぶ直線を中心線とし、前記底壁又は前記側壁の内側面のうち近い内側面と外周面が接する円筒形と前記底壁及び前記側壁との間に、耐熱温度が1500℃以上の高耐火性部材が存在し、前記高耐火性部材はブロック状であり、前記底壁の上に積み重ねて構成されている電気抵抗炉を用いて、
炭素質粉末からなる棒状発熱体によって前記電極間を接続する工程と、
珪素を含む珪酸質原料及び炭素を含む炭素質原料からなる混合原料を前記棒状発熱体の周りを取り囲むように前記炉本体内に充填する工程と、
前記電極間を通電し、前記棒状発熱体を加熱して、炭化珪素の塊状物を製造することを特徴とする炭化珪素の製造方法。
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JP2014239019A JP6489807B2 (ja) | 2014-11-26 | 2014-11-26 | 電気抵抗炉及びこれを用いた炭化珪素の製造方法 |
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JP2016099102A JP2016099102A (ja) | 2016-05-30 |
JP6489807B2 true JP6489807B2 (ja) | 2019-03-27 |
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Families Citing this family (1)
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JP6749230B2 (ja) * | 2016-12-27 | 2020-09-02 | 太平洋セメント株式会社 | 炭化珪素の製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3647384A (en) * | 1968-07-01 | 1972-03-07 | Carborundum Co | Core for silicon carbide furnace |
US4419336A (en) * | 1982-03-29 | 1983-12-06 | Norton Company | Silicon carbide production and furnace |
JPS61228288A (ja) * | 1985-03-30 | 1986-10-11 | 日本セメント株式会社 | 非酸化物粉末の連続合成炉 |
US4686032A (en) * | 1985-04-10 | 1987-08-11 | Electro Minerals (Canada), Inc. | Automatic method for separating and cleaning silicon carbide furnace materials |
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