JP5588063B2 - 鉄含有残渣の均質化および安定化方法ならびに装置 - Google Patents
鉄含有残渣の均質化および安定化方法ならびに装置 Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 42
- 238000000034 method Methods 0.000 title claims description 42
- 229910052742 iron Inorganic materials 0.000 title claims description 15
- 230000000087 stabilizing effect Effects 0.000 title claims description 6
- 230000003472 neutralizing effect Effects 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 230000006641 stabilisation Effects 0.000 claims description 24
- 238000011105 stabilization Methods 0.000 claims description 24
- 239000004927 clay Substances 0.000 claims description 12
- 229910001385 heavy metal Inorganic materials 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 238000000265 homogenisation Methods 0.000 claims description 7
- 238000009854 hydrometallurgy Methods 0.000 claims description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 150000002681 magnesium compounds Chemical class 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000002983 circular dichroism Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 description 41
- 239000007787 solid Substances 0.000 description 15
- 229910052935 jarosite Inorganic materials 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 10
- 235000011941 Tilia x europaea Nutrition 0.000 description 10
- 239000004571 lime Substances 0.000 description 10
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 238000002386 leaching Methods 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- 239000011701 zinc Substances 0.000 description 8
- 238000006386 neutralization reaction Methods 0.000 description 7
- 239000003381 stabilizer Substances 0.000 description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 235000011116 calcium hydroxide Nutrition 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052598 goethite Inorganic materials 0.000 description 3
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
- 150000001674 calcium compounds Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 229910052595 hematite Inorganic materials 0.000 description 2
- 239000011019 hematite Substances 0.000 description 2
- 150000002506 iron compounds Chemical class 0.000 description 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
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- 238000011084 recovery Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 2
- 229960001763 zinc sulfate Drugs 0.000 description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
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- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
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- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
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- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
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Description
ジャロサイトおよび元素状態の硫黄を含む廃棄物残渣のろ過ケーキを水簸反応器で水簸して均質なスラリとなった。廃棄物残渣の含水率は39%であった。このスラリを水簸反応器から安定化反応器に120 l/hでポンプ輸送し、安定化反応器に29 kg/hの固体の水酸化カルシウムを供給した。水酸化カルシウムの供給中、8 l/hの水を安定化反応器に供給した。安定化反応器の有効容積は30 dm3であった。安定化を常温で行なった。連続運転を5時間行なった。運転中、形成された200 lの安定化された廃棄物を樽に集めた。運転中の安定化された廃棄物のサンプルを採取した。安定化された材料を平台上に移し、そこで材料の挙動を観察した。材料は一晩で固まらせることができた。材料は固まり、これから水は出て来なかった。割れた硬化片中に鉄残渣および中和剤の個々の粒子は識別できなかった。固まり安定化した廃棄物粘土にEU標準EN-12457-3による溶解度試験を行なった。試験結果は、EU指令で定められた有害廃棄物の限界値を下まわっていた。
本実施例では、上述の試験操作の1つを繰り返したが、違いは、本発明による安定化反応器をスクリュミキサに取り替えたことであった。結果は、塊だらけで不均質な廃棄物となり、未反応の石灰が明らかに認められた。
Claims (12)
- 湿式冶金プロセスで発生し少量の溶解性重金属を含む鉄含有残渣を中和剤によって安定した形態に転換させる方法において、該方法は、
−前記残渣をまず水簸する工程と、
−該水簸された残渣を少なくとも1つの安定化または均質化反応器に供給する工程と、
−該安定化または均質化反応器に中和剤を送る工程と、
−前記残渣と中和剤を、シャフトの周りに支持アームによって前記シャフトに支持され円を描き互いに対称的に配置された少なくとも2つのらせん状バーを含むらせん状ミキサによって均質に混合する工程とを含み、該ミキサの直径の前記反応器の直径に対する比が0.75〜0.99である方法。 - 請求項1に記載の方法において、前記中和剤は、前記安定化反応器に粉状で供給することを特徴とする方法。
- 請求項1に記載の方法において、前記中和剤は、前記安定化反応器にスラリ状で供給することを特徴とする方法。
- 請求項1に記載の方法において、前記中和剤はカルシウムおよび/またはマグネシウム化合物であることを特徴とする方法。
- 湿式冶金プロセスで発生し少量の溶解性重金属を含む鉄含有残渣を中和剤によって安定した形態に転換させ、これによってまず残渣が反応器中で水簸される装置において、該水簸された残渣は少なくとも1つの安定化または均質化反応器に供給され、該反応器の上部分は円筒形であり、該反応器の上部分には案内板が配置され、該案内板は、該反応器の縁部から斜めに内側へ向いてスラリ流を案内し、該反応器の直径の3〜8%の距離だけ内側に伸び、また前記反応器の下部分は下方に向かって狭くなる円錐様の形状であり、前記残渣と中和剤が前記反応器の上部分に供給され、均質な粘土が該反応器の下部分から取り出され、前記反応器はミキサを備え、該ミキサは、シャフトの周りに円を描く少なくとも2つのらせん状バーを含み、該らせん状バーは支持アームによって前記シャフトに支持され、前記らせん状バーは互いに対称的に配置され、ミキサ径の前記安定化反応器の直径に対する比は0.75〜0.99であることを特徴とする装置。
- 請求項5に記載の装置において、前記ミキサは2つの部分から構成され、これによって上部ミキサ部分は、前記らせん状バーの前記シャフトからの距離が該ミキサ部分の全高を通して同じであって、前記安定化反応器の円筒部に配置され、前記下部ミキサ部分は、前記らせん状バーの前記シャフトからの距離が前記ミキサの底部に向かって円錐状に小さくなり、前記反応器の下方に向かって狭くなる円錐様形状部分に配置されていることを特徴とする装置。
- 請求項5または6に記載の装置において、前記らせん状バーを異なる高さに支持する前記支持アームの数は4ないし8であることを特徴とする装置。
- 請求項6に記載の装置において、前記上部ミキサ部分および下部ミキサ部分のらせん状バーは互いに偏位していることを特徴とする装置。
- 請求項5または6に記載の装置において、前記らせん状バーは前記シャフトの周りに円を0.5ないし2回描くことを特徴とする装置。
- 請求項5または6に記載の装置において、前記らせん状バーの水平に対するピッチ角は15〜45°、好ましくは25〜35°であることを特徴とする装置。
- 請求項5または6に記載の装置において、前記ミキサ内の前記支持アームは、前記ミキサまたはミキサ部分における前記支持アームの位置に応じて水平に対して0〜65°の角度であることを特徴とする装置。
- 請求項5または6に記載の装置において、前記ミキサの直径の前記安定化反応器の直径に対する比は0.85〜0.95であることを特徴とする装置。
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FI20100237A FI123266B (fi) | 2010-06-04 | 2010-06-04 | Menetelmä ja laitteisto rautapitoisen sakan homogenoimiseksi ja stabiloimiseksi |
FI20100237 | 2010-06-04 | ||
PCT/FI2011/050508 WO2011151521A1 (en) | 2010-06-04 | 2011-05-31 | Method and apparatus for homogenising and stabilising an iron-bearing residue |
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TWI678231B (zh) * | 2015-07-01 | 2019-12-01 | 日商住友重機械過程機器股份公司 | 攪拌裝置 |
CN107875893A (zh) * | 2017-11-24 | 2018-04-06 | 洛阳新远大冶金成套设备有限公司 | 搅拌装置及铝灰处置*** |
US20230201778A1 (en) * | 2020-04-20 | 2023-06-29 | Metso Outotec Finland Oy | Mixing arrangement, mixer settler unit and use |
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IT1123931B (it) | 1975-11-20 | 1986-04-30 | Prayon | Procedimento per trattare residui contenenti almeno 3% di zolfo sotto forma di solfati basici di ferro |
FR2332246A1 (fr) * | 1975-11-20 | 1977-06-17 | Prayon | Procede de traitement de residus contenant au moins 3 % de soufre sous forme de sulfates basiques de fer |
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JPS5920825U (ja) * | 1983-05-30 | 1984-02-08 | ヤマトボ−リング株式会社 | 粉体と液体の連続式ミキサ− |
DE3327770A1 (de) | 1983-08-02 | 1985-02-14 | Bayer Ag, 5090 Leverkusen | Verfahren zur aufarbeitung metallsulfathaltiger schwefelsaeuren |
DE3724677A1 (de) * | 1987-07-25 | 1989-02-02 | Kronos Titan Gmbh | Verfahren zur aufarbeitung von eisen(ii)-sulfathaltigen metallsulfatgemischen |
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FI84787C (fi) | 1990-04-04 | 1992-01-27 | Outokumpu Oy | Saett att blanda ihop tvao vaetskor eller en vaetska och ett fastaemne, samt att samtidigt avskilja ur vaetskan en annan vaetska eller ett annat fastaemne. |
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US6214237B1 (en) * | 1999-06-29 | 2001-04-10 | Allegheny Energy Supply Company | Process for treating solid waste slurry |
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FI20100237A0 (fi) | 2010-06-04 |
AU2011260149B2 (en) | 2014-06-12 |
ES2629350T3 (es) | 2017-08-08 |
US9085020B2 (en) | 2015-07-21 |
CA2799447A1 (en) | 2011-12-08 |
JP2013533106A (ja) | 2013-08-22 |
KR101473595B1 (ko) | 2014-12-16 |
AU2011260149A1 (en) | 2013-01-10 |
EP2576039A4 (en) | 2014-06-04 |
KR20130020913A (ko) | 2013-03-04 |
PT2576039T (pt) | 2017-06-29 |
WO2011151521A1 (en) | 2011-12-08 |
HUE033624T2 (en) | 2017-12-28 |
ZA201208771B (en) | 2013-07-31 |
EA201291251A1 (ru) | 2013-06-28 |
FI123266B (fi) | 2013-01-15 |
CN102939148B (zh) | 2015-11-25 |
BR112012030918A2 (pt) | 2016-11-08 |
US20130060075A1 (en) | 2013-03-07 |
CA2799447C (en) | 2014-10-21 |
EP2576039A1 (en) | 2013-04-10 |
MX2012014036A (es) | 2013-02-07 |
EP2576039B1 (en) | 2017-05-24 |
EA024374B1 (ru) | 2016-09-30 |
CN102939148A (zh) | 2013-02-20 |
BR112012030918B1 (pt) | 2020-09-29 |
MX344135B (es) | 2016-12-06 |
PE20130964A1 (es) | 2013-09-19 |
FI20100237L (fi) | 2011-12-05 |
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