JP4681623B2 - 還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法 - Google Patents
還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法 Download PDFInfo
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- JP4681623B2 JP4681623B2 JP2008031680A JP2008031680A JP4681623B2 JP 4681623 B2 JP4681623 B2 JP 4681623B2 JP 2008031680 A JP2008031680 A JP 2008031680A JP 2008031680 A JP2008031680 A JP 2008031680A JP 4681623 B2 JP4681623 B2 JP 4681623B2
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- zinc
- iron
- reduction furnace
- secondary dust
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- 239000011701 zinc Substances 0.000 title claims description 176
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 155
- 229910052725 zinc Inorganic materials 0.000 title claims description 137
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 131
- 239000000428 dust Substances 0.000 title claims description 101
- 229910052742 iron Inorganic materials 0.000 title claims description 73
- 230000009467 reduction Effects 0.000 title claims description 64
- 238000000034 method Methods 0.000 claims description 65
- 239000002245 particle Substances 0.000 claims description 45
- 239000002002 slurry Substances 0.000 claims description 42
- 239000010419 fine particle Substances 0.000 claims description 28
- 238000007885 magnetic separation Methods 0.000 claims description 22
- 239000002994 raw material Substances 0.000 claims description 19
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 claims description 10
- 239000011667 zinc carbonate Substances 0.000 claims description 10
- 235000004416 zinc carbonate Nutrition 0.000 claims description 10
- 229910000010 zinc carbonate Inorganic materials 0.000 claims description 10
- 239000006227 byproduct Substances 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 4
- 239000001099 ammonium carbonate Substances 0.000 claims description 4
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 4
- 238000011978 dissolution method Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005188 flotation Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 description 29
- 238000000926 separation method Methods 0.000 description 19
- 238000011282 treatment Methods 0.000 description 17
- 206010040844 Skin exfoliation Diseases 0.000 description 15
- 230000000694 effects Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010979 pH adjustment Methods 0.000 description 10
- 238000009210 therapy by ultrasound Methods 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000005415 magnetization Effects 0.000 description 9
- 238000004090 dissolution Methods 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010828 elution Methods 0.000 description 4
- 238000004299 exfoliation Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000003751 zinc Chemical class 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000012733 comparative method Methods 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000006148 magnetic separator Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- UOURRHZRLGCVDA-UHFFFAOYSA-D pentazinc;dicarbonate;hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[O-]C([O-])=O.[O-]C([O-])=O UOURRHZRLGCVDA-UHFFFAOYSA-D 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000009862 microstructural analysis Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
Claims (9)
- 製鉄工程から発生する鉄および亜鉛含有の副生物を還元する還元炉から発生した二次ダストを、液体に懸濁したスラリーとした上で亜鉛含有量の多い1μm未満の微粒子を鉄含有量の多い大きな粒子からミクロ状に剥離する第一の工程と、その亜鉛微粒子を多く含む部分と鉄粒子を多く含む部分をマクロ状に分離する第二の工程と、分離された亜鉛微粒子を多く含む部分を亜鉛原料として利用する第三の工程の三工程を順次行う還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 製鉄工程から発生する鉄および亜鉛含有の副生物を還元する還元炉から発生した二次ダストを、液体に懸濁したスラリーとした上で亜鉛含有量の多い1μm未満微粒子を鉄含有量の多い大きな粒子からミクロ状に剥離する第一の工程と、その亜鉛微粒子を多く含む部分と鉄粒子を多く含む部分をマクロ状に分離する第二の工程と、分離された鉄粒子を多く含む部分を製鉄原料として利用する第三の工程の三工程を順次行う還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 第一の工程において、液体に懸濁したスラリーとした上で亜鉛含有量の多い1μm未満の微粒子を鉄含有量の多い大きな粒子からミクロ状に剥離する手段が、攪拌翼などを用いた機械的な強攪拌、分散剤を併用しての攪拌洗浄、超音波洗浄の何れかである請求項1または請求項2に記載の還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 超音波洗浄において照射する超音波の周波数が160KHz以下である請求項3に記載の還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 第二の工程において、亜鉛微粒子を多く含む部分と鉄粒子を多く含む部分をマクロ状に分離する手段が、湿式磁選法、ハイドロサイクロン法、浮遊選鉱の何れかである請求項1または請求項2に記載の還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 第一の工程および第二の工程におけるスラリーのpH範囲が、8以上10以下である請求項1または請求項2に記載の還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 還元炉が、回転炉床式還元炉である請求項1から請求項6の中のいずれか1項に記載の還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 分離された亜鉛微粒子を多く含む部分を亜鉛原料として利用する第三の工程が、炭酸アンモニウム溶解法によってZn含有原料から高純度の炭酸亜鉛を晶出する高純度炭酸亜鉛を製造する方法である請求項1に記載の還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
- 分離された鉄粒子を多く含む部分の利用方法が、還元炉に装入することにより鉄分を製鉄原料として再度有効利用する方法である請求項2に記載の還元炉から発生する二次ダストの鉄分および亜鉛分の有効利用方法。
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CN110592387A (zh) * | 2019-10-29 | 2019-12-20 | 攀钢集团攀枝花钢铁研究院有限公司 | 回收高锌瓦斯泥中锌的方法 |
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JP5303786B2 (ja) * | 2009-08-06 | 2013-10-02 | 濱田重工株式会社 | 製鉄工程での発生物の再活用方法 |
CN110684903B (zh) * | 2019-11-07 | 2021-06-25 | 郑州大学 | 一种基于电子运动强化含油污气缸套珩磨废料中有价金属溶出的方法 |
CN110747308B (zh) * | 2019-11-18 | 2023-10-13 | 武汉科技大学 | 一种转炉lt含锌粉尘在线处理系统及其处理方法 |
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JP2005021841A (ja) * | 2003-07-04 | 2005-01-27 | Hamada Heavy Industries Ltd | 亜鉛含有ダストの処理方法と炭酸亜鉛の製造方法 |
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JPS55104434A (en) * | 1979-02-06 | 1980-08-09 | Dowa Mining Co Ltd | Treating method for iron manufacturing dust containing zinc |
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CN110592387A (zh) * | 2019-10-29 | 2019-12-20 | 攀钢集团攀枝花钢铁研究院有限公司 | 回收高锌瓦斯泥中锌的方法 |
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