JP6970044B2 - 銅製錬炉の操業方法 - Google Patents
銅製錬炉の操業方法 Download PDFInfo
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- JP6970044B2 JP6970044B2 JP2018054884A JP2018054884A JP6970044B2 JP 6970044 B2 JP6970044 B2 JP 6970044B2 JP 2018054884 A JP2018054884 A JP 2018054884A JP 2018054884 A JP2018054884 A JP 2018054884A JP 6970044 B2 JP6970044 B2 JP 6970044B2
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- slag
- smelting furnace
- copper smelting
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- Prior art date
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- 239000010949 copper Substances 0.000 title claims description 55
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 43
- 229910052802 copper Inorganic materials 0.000 title claims description 43
- 238000003723 Smelting Methods 0.000 title claims description 34
- 239000002893 slag Substances 0.000 claims description 86
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 32
- 229910052760 oxygen Inorganic materials 0.000 claims description 32
- 239000001301 oxygen Substances 0.000 claims description 32
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 18
- 239000002994 raw material Substances 0.000 claims description 17
- 239000012141 concentrate Substances 0.000 claims description 16
- 239000003575 carbonaceous material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000003610 charcoal Substances 0.000 claims description 7
- 239000007858 starting material Substances 0.000 claims description 7
- 239000012495 reaction gas Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 239000007787 solid Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 229910052596 spinel Inorganic materials 0.000 description 10
- 239000011029 spinel Substances 0.000 description 10
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910015372 FeAl Inorganic materials 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000611 regression analysis Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
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Description
図1は、銅の製錬方法の一実施形態に使用する自溶炉100の概略図である。図1に示すように、自溶炉100は、反応シャフト10、セットラ20およびアップテイク30が順に配置された構造を有する。反応シャフト10の上部には、精鉱バーナ40が設けられている。
CuFeS2+SiO2+O2→Cu2S・FeS+2FeO・SiO2+SO2 + 反応熱 (1)
上記実施形態に従って、銅製錬炉の操業を行った。炭材添加量は、スラグ60中の酸素分圧が10−8.0atm以下となる量とした。その結果、炭材添加量を銅製錬用原料に対して0.5mass%以上とすることで、スラグ60中の酸素分圧が10−8.0atm以下となることが確認された。なお、スラグ60の温度は、1240℃〜1300℃に制御した。
20 セットラ
30 アップテイク
40 精鉱バーナ
50 マット
60 スラグ
100 自溶炉
Claims (4)
- 銅精鉱を含む出発原料とともに反応ガスを銅製錬炉内に投入することで、マットとスラグとを生成する銅製錬炉の操業方法において、
1200℃以上、1300℃以下の前記スラグにおけるAl2O3比率が4.5mass%以上、10mass%以下となる場合に、炭材を前記銅製錬炉内に投入することで、前記スラグの酸素分圧を10−8.0atm以下に制御することを特徴とする銅製錬炉の操業方法。 - 前記出発原料に対して、前記炭材を0.5mass%以上添加することを特徴とする請求項1記載の銅製錬炉の操業方法。
- 前記銅精鉱におけるS/Cuは、0.8〜1.5であることを特徴とする請求項1または2に記載の銅製錬炉の操業方法。
- 前記スラグの酸素分圧を10−9.5atm以上に制御することを特徴とする請求項1〜3のいずれか一項に記載の銅製錬炉の操業方法。
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JP2019167570A JP2019167570A (ja) | 2019-10-03 |
JP6970044B2 true JP6970044B2 (ja) | 2021-11-24 |
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Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3302563B2 (ja) * | 1996-05-28 | 2002-07-15 | 日鉱金属株式会社 | 銅の乾式製錬法 |
JP3842908B2 (ja) * | 1998-10-29 | 2006-11-08 | 三井金属鉱業株式会社 | 銅製錬自溶炉における炉内還元度の制御方法 |
JP6675935B2 (ja) * | 2016-06-08 | 2020-04-08 | パンパシフィック・カッパー株式会社 | 銅製錬炉の精鉱バーナ及び銅製錬炉の操業方法 |
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