JPWO2013100074A1 - 酸化スズ質耐火物およびその製造方法 - Google Patents
酸化スズ質耐火物およびその製造方法 Download PDFInfo
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- JPWO2013100074A1 JPWO2013100074A1 JP2013551805A JP2013551805A JPWO2013100074A1 JP WO2013100074 A1 JPWO2013100074 A1 JP WO2013100074A1 JP 2013551805 A JP2013551805 A JP 2013551805A JP 2013551805 A JP2013551805 A JP 2013551805A JP WO2013100074 A1 JPWO2013100074 A1 JP WO2013100074A1
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- tin oxide
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910001887 tin oxide Inorganic materials 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 229910006404 SnO 2 Inorganic materials 0.000 claims abstract description 145
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 81
- 239000011521 glass Substances 0.000 claims abstract description 40
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims description 22
- 229910006501 ZrSiO Inorganic materials 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000005245 sintering Methods 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 6
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 28
- 239000006104 solid solution Substances 0.000 description 19
- 239000000203 mixture Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 13
- 239000002245 particle Substances 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- -1 Ta 2 O 5 Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000006060 molten glass Substances 0.000 description 3
- 238000007088 Archimedes method Methods 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000000550 scanning electron microscopy energy dispersive X-ray spectroscopy Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(II) oxide Inorganic materials [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
- C03B5/43—Use of materials for furnace walls, e.g. fire-bricks
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- F27—FURNACES; KILNS; OVENS; RETORTS
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- F27D1/00—Casings; Linings; Walls; Roofs
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Abstract
SnO2、SiO2およびZrO2を必須成分として含有する酸化スズ質耐火物であって、酸化スズ質耐火物中におけるSnO2、SiO2およびZrO2の含有量の合量が70質量%以上であり、かつ、SnO2、SiO2およびZrO2の含有量の合量に対して、SnO2の含有割合が32〜98モル%、SiO2の含有割合が1〜35モル%、ZrO2の含有割合が1〜35モル%、である酸化スズ質耐火物。
Description
前記酸化スズ質耐火物中におけるSnO2、SiO2およびZrO2の含有量の合量が70質量%以上であり、かつ、前記SnO2、SiO2およびZrO2の含有量の合量に対して、SnO2の含有割合が32〜98モル%、SiO2の含有割合が1〜35モル%、ZrO2の含有割合が1〜35モル%、であることを特徴とする酸化スズ質耐火物。
[2]1300℃、350時間の熱処理後に、前記酸化スズ質耐火物の焼結体表面に、ZrSiO4相およびZrO2相が形成される上記[1]に記載の酸化スズ質耐火物。
[3]SnO2、SiO2およびZrO2の含有量の合量が、95質量%以上である上記[1]または[2]に記載の酸化スズ質耐火物。
[4]前記SnO2、SiO2およびZrO2の含有量の合量に対して、SnO2の含有割合が76〜98モル%、SiO2の含有割合が1〜12モル%、ZrO2の含有割合が1〜12モル%、である上記[1]乃至[3]のいずれかに記載の酸化スズ質耐火物。
[5]CuO、Cu2O、ZnO、Mn2O3、CoO、Al2O3、Sb2O3およびLi2Oの酸化物からなる群から選ばれた少なくとも1つ以上の成分を、さらに含む上記[1]乃至[4]のいずれかに記載の酸化スズ質耐火物。
[6]1300℃、−700mmHg、350時間の熱処理後において、SnO2含有量99モル%以上のSnO2焼結体と比較したSnO2の揮散速度が1/5以下である上記[1]乃至[5]のいずれかに記載の酸化スズ質耐火物。
[8]粉末原料を均一に混合した後、所望の形状に成形し、これを焼結処理して得られる酸化スズ質耐火物の製造方法であって、
前記酸化スズ質耐火物が、SnO2、SiO2およびZrO2を必須成分として含有し、前記SiO2およびZrO2成分の粉末原料として、ZrSiO4粉末を使用することを特徴とする酸化スズ質耐火物の製造方法。
また、SiO2と反応しないZrO2も存在し、このZrO2は単独でも揮散抑制効果を発揮する。ZrSiO4およびZrO2は、SEM−EDX(Scanning Electron Microscope−Energy Dispersive X−ray Detector、日立ハイテクノロジーズ社製、商品名:S−3000H)等の電子顕微鏡装置を用いることで、その存在を確認できる。
SnO2、ZrO2およびSiO2の合量を100モル%としたときの各成分の含有割合が、上記のとおり、SnO2が32〜98モル%、ZrO2が1〜35モル%、SiO2が1〜35モル%の関係を満たすと、ZrO2の固溶限界濃度が低減し、SnO2の揮散開始時から、早期にZrO2がSnO2粒子表面に析出する。したがって、SiO2を全く含有しない場合と比較して、より早期の段階から優れたSnO2の揮散抑制効果を発揮できる。また、SiO2の大部分は、固溶限界を超えて析出したZrO2と反応し、ZrSiO4としてSnO2−ZrO2固溶体の粒界に存在し、外部環境に露出しているSnO2の表面積を減少させる。そのため、SiO2を含有せずにZrO2を含有する場合と比較し、長期的に優れたSnO2の揮散抑制効果を発揮する。
他の成分としては、例えば、CuO、Cu2O、ZnO、Mn2O3、CoO、Li2O、Al2O3、TiO2、Ta2O5、CeO2、CaO、Sb2O3、Nb2O5、Bi2O3、UO2、HfO2などの酸化物が挙げられる。
また、Zr、Si、Cu等の単体金属の粉末、これら金属を含んだ金属塩化合物、Zr(OH)2、CuZrO3、CuCO3、またはCu(OH)2などが使用できる。中でも、CuZrO3またはCuCO3が好ましい。
まず、酸化スズ質耐火物を製造するための原料として、表1に示した平均粒子径と化学成分および純度を有する粉末原料を準備した。次に、酸化スズ質耐火物が表2に示す組成となるように、SnO2、ZrO2、SiO2、ZrSiO4、Al2O3、Sb2O3、CuO、Mn2O3等の各粉末を、表3に示した割合で調合した。
表2中、ZrO2とSiO2のモル比が1:1のもの(例1、2、4〜6、11〜17、23、および25)は、ZrSiO4粉末を使用した。また、ZrO2とSiO2のモル比が1:1でないものは、ZrO2粉末およびSiO2粉末を使用した。
実施例および比較例のそれぞれのガラスに対する耐侵食性は、1300℃の温度域において、ガラス製造装置に広く利用されているアルミナ質電鋳煉瓦(AGCセラミックス社製、商品名:MB−G)の例26と比較し、MB−Gの侵食試験後の侵食部の最大侵食深さを100として、相対的な侵食量を示した。
なお、2011年12月28日に出願された日本特許出願2011−289690号の明細書、特許請求の範囲、及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (8)
- SnO2、SiO2およびZrO2を必須成分として含有する酸化スズ質耐火物であって、
前記酸化スズ質耐火物中におけるSnO2、SiO2およびZrO2の含有量の合量が70質量%以上であり、かつ、前記SnO2、SiO2およびZrO2の含有量の合量に対して、SnO2の含有割合が32〜98モル%、SiO2の含有割合が1〜35モル%、ZrO2の含有割合が1〜35モル%、であることを特徴とする酸化スズ質耐火物。 - 1300℃、350時間の熱処理後に、前記酸化スズ質耐火物の焼結体表面に、ZrSiO4相およびZrO2相が形成される請求項1に記載の酸化スズ質耐火物。
- SnO2、SiO2およびZrO2の含有量の合量が、95質量%以上である請求項1または2に記載の酸化スズ質耐火物。
- 前記SnO2、SiO2およびZrO2の含有量の合量に対して、SnO2の含有割合が76〜98モル%、SiO2の含有割合が1〜12モル%、ZrO2の含有割合が1〜12モル%、である請求項1乃至3のいずれか1項に記載の酸化スズ質耐火物。
- CuO、Cu2O、ZnO、Mn2O3、CoO、Al2O3、Sb2O3およびLi2Oの酸化物からなる群から選ばれた少なくとも1つ以上の成分を、さらに含む請求項1乃至4のいずれか1項に記載の酸化スズ質耐火物。
- 1300℃、−700mmHg、350時間の熱処理後において、SnO2含有量99モル%以上のSnO2焼結体と比較したSnO2の揮散速度が1/5以下である請求項1乃至5のいずれか1項に記載の酸化スズ質耐火物。
- 請求項1乃至6のいずれか1項に記載の酸化スズ質耐火物を具備してなるガラス溶解炉。
- 粉末原料を均一に混合した後、所望の形状に成形し、これを焼結処理して得られる酸化スズ質耐火物の製造方法であって、
前記酸化スズ質耐火物が、SnO2、SiO2およびZrO2を必須成分として含有し、前記SiO2およびZrO2成分の粉末原料として、ZrSiO4粉末を使用することを特徴とする酸化スズ質耐火物の製造方法。
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