WO2008086736A1 - Technologie d'extraction par dissolution de clinker de boue rouge et de séparation de boue rouge par un traitement en série - Google Patents

Technologie d'extraction par dissolution de clinker de boue rouge et de séparation de boue rouge par un traitement en série Download PDF

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Publication number
WO2008086736A1
WO2008086736A1 PCT/CN2008/000093 CN2008000093W WO2008086736A1 WO 2008086736 A1 WO2008086736 A1 WO 2008086736A1 CN 2008000093 W CN2008000093 W CN 2008000093W WO 2008086736 A1 WO2008086736 A1 WO 2008086736A1
Authority
WO
WIPO (PCT)
Prior art keywords
red mud
clinker
hydrocyclone
ball mill
dissolution
Prior art date
Application number
PCT/CN2008/000093
Other languages
English (en)
Chinese (zh)
Inventor
Shuji Li
Xinqin Liao
Runtian Liu
Original Assignee
China Aluminium International Engineering Corporation Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Aluminium International Engineering Corporation Limited filed Critical China Aluminium International Engineering Corporation Limited
Publication of WO2008086736A1 publication Critical patent/WO2008086736A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud

Definitions

  • the invention relates to a process for dissolution of red mud clinker and separation of red mud in the production process of alumina in series, belonging to the technical field of alumina production. Background technique
  • the main difference between bauxite clinker and red mud clinker is the difference in the content of impurities contained.
  • the bauxite clinker in the alumina plant is currently a section of abrasive mill wet milled by a ball mill or a two-stage abrasive stripping process.
  • the tandem process plant uses a two-stage dissolution process of a cylindrical dissolver and a rod mill.
  • the red mud separation equipment uses a settling tank.
  • the red mud clinker or red mud-based clinker the following technical problems exist in the two-stage dissolution process of the existing one-stage abrasive or cylindrical dissolver and rod mill:
  • the present invention provides a tandem method for red mud clinker dissolution and red mud separation process, the purpose of which is to increase equipment production capacity and clinker net dissolution rate, improve operating conditions, reduce labor intensity and production and processing costs, Reduce equipment investment and reduce equipment maintenance workload.
  • the present invention is achieved as follows: a tandem method for red mud clinker dissolution and red mud separation process, the clinker sent from the clinker burning process is metered by the feed machine and sent to the ball mill, and The adjusting liquid metered by the flow meter is also added to the ball mill, the clinker and the adjusting liquid are wet-grinded and dissolved in the ball mill, and the grinding slurry enters the classifier, and the classifier overflows through the dissolution tank to pump the hydrocyclone for classification.
  • the classifier back to the ball mill continues to grind out, the overflow of the hydrocyclone flows into the separation settling tank for liquid-solid separation, water After the bottom stream of the cyclone is combined with the bottom stream of the settling tank and mixed with the red mud secondary washing liquid, the red mud washing process is pumped, and the settling tank overflows through the overflow tank to pump the desiliconization process.
  • a slag box is provided before the inlet of the hydrocyclone.
  • the hydrocyclone is disposed above the separation settling tank.
  • the ball mill is an overflow ball mill.
  • the hydrocyclone overflows into the settling tank to add a flocculant before liquid-solid separation.
  • the solution is adjusted by the red mud wash, seeded and one or more toner mother liquor constitutes 0
  • Solid solution containing higher dissolution slurry which is graded by hydrocyclone, reduces the feed solid content of the separation sedimentation tank, improves the sedimentation velocity of the red mud in the sedimentation tank and reduces the separation sinking tank load.
  • the hydrocyclone is placed above the separation settling tank so that it overflows into the separation settling tank.
  • a slag removal tank Before the feed inlet of the hydrocyclone, there is a slag removal tank, which not only prevents the entry of knots and debris, but also prevents the blockage of the hydrocyclone grit nozzle, creating conditions for the normal operation of the hydrocyclone.
  • Fig. 1 is a flow chart showing the process of red mud clinker dissolution and red mud separation by the tandem method of the present invention.
  • a desiliconization crude liquid
  • b seed mother liquor
  • c carbon mother liquor
  • d grader return sand
  • e classifier overflow
  • f hydrocyclone overflow
  • g hydrocyclone underflow
  • i sedimentation tank bottom flow
  • j red mud primary washing liquid
  • k flocculant
  • m red mud secondary washing liquid.
  • the process of the present invention is as follows:
  • the clinker in the clinker 1 is metered into the overflow ball mill 3 by the feed machine 2.
  • Red mud washing liquid j and seed mother liquid b (whether or not added according to the process requirements), carbon mother liquid c (whether or not added according to the process requirements) respectively enter the adjusting liquid tank 14, and the clinker is metered by the flow meter and then added to the ball mill 3.
  • the clinker and the adjusting liquid are wet-grinded and dissolved in the ball mill, and the grinding slurry enters the spiral classifier 4, and the classifier overflow e is discharged into the slurry tank 5, and is sent to the hydrocyclone 8 through the slag removing tank 7 by the pump 6 for classification.
  • the hydrocyclone 8 position is above the separation settling tank, the hydrocyclone overflow f and the flocculant (whether or not added according to the process needs) simultaneously enter the separation settling tank 9 for liquid solidification Separating, the hydrocyclone bottom stream g and the settling tank bottom stream i are mixed into the bottom trough 12 and the red mud secondary washing liquid m, and then sent to the red mud washing process by the underflow pump 13, and the settling tank overflow h enters the overflow tank 10, The overflow pump 11 is sent to a desiliconization process. Before the inlet of the hydrocyclone 8 is provided with a slag removal tank 7, which not only prevents the formation of knots and debris, but also prevents the clogging of the hydrocyclone sinking nozzle.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

Une méthode en série est décrite pour la décomposition des clinkers de boue rouge et la séparation de la boue rouge dans la production de l'alumine. Cette méthode comprend des procédés dans lesquels la bouillie décomposée par un broyeur à billes par broyage par voie humide est adressée à un classificateur dont le trop-plein s'écoule dans un hydrocyclone, le trop-plein de ce dernier s'écoulant dans un réservoir de décantation. Le trop-plein du réservoir de décantation est adressé à un procédé d'élimination de la silice et le classificateur renvoie le sable au broyeur à billes. Le trop-plein de l'hydrocyclone est combiné avec le trop-plein du réservoir de décantation, puis mélangé avec la boue rouge de second lavage. Le mélange est ensuite adressé à un procédé de lavage de boue rouge.
PCT/CN2008/000093 2007-01-13 2008-01-14 Technologie d'extraction par dissolution de clinker de boue rouge et de séparation de boue rouge par un traitement en série WO2008086736A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710010077.7 2007-01-13
CNB2007100100777A CN100571878C (zh) 2007-01-13 2007-01-13 串联法赤泥熟料溶出及赤泥分离工艺

Publications (1)

Publication Number Publication Date
WO2008086736A1 true WO2008086736A1 (fr) 2008-07-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/000093 WO2008086736A1 (fr) 2007-01-13 2008-01-14 Technologie d'extraction par dissolution de clinker de boue rouge et de séparation de boue rouge par un traitement en série

Country Status (2)

Country Link
CN (1) CN100571878C (fr)
WO (1) WO2008086736A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107720794A (zh) * 2017-11-09 2018-02-23 茌平信发华宇氧化铝有限公司 沉降槽结疤碱煮及再利用系统及工作方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103539172B (zh) * 2012-07-09 2015-08-19 沈阳铝镁设计研究院有限公司 一种旋流器与沉降槽结合的赤泥分离洗涤工艺方法及装置
CN103663512A (zh) * 2012-08-31 2014-03-26 沈阳铝镁设计研究院有限公司 一种氧化铝熟料溶出工艺
CN102951664A (zh) * 2012-11-28 2013-03-06 中国铝业股份有限公司 一种烧结法熟料的溶出方法
CN103111103B (zh) * 2013-02-28 2015-09-16 闵方权 旋流离心分离设备
CN107597410B (zh) * 2017-08-12 2019-07-09 陈俊 一种高效环保的矿泥分离装置
CN108218181A (zh) * 2018-02-13 2018-06-29 沈阳环境科学研究院 一种河湖泊涌底泥深度分级处理系统及方法
CN109439023A (zh) * 2018-11-07 2019-03-08 张勇 一种利用赤泥进行功能性填料生产的技术
CN109704375A (zh) * 2019-03-13 2019-05-03 国家电投集团山西铝业有限公司 串联法烧结方法及系统

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DE19903011A1 (de) * 1999-01-26 2000-08-03 Akw Apparate Verfahren Verfahren zum Trennen und Entsorgen des sandigen Anteils des bei der Verarbeitung von Bauxit mittels heißer Natronlauge entstehenden Rotschlamms sowie Anordnung zur Durchführung des Verfahrens
CN1370741A (zh) * 2002-03-26 2002-09-25 贵州铝厂 氧化铝生产烧结法赤泥分离方法
CN1406871A (zh) * 2001-08-27 2003-04-02 中南大学 一种高浓度铝酸钠溶液的制备方法
JP2004284925A (ja) * 2003-03-25 2004-10-14 National Institute Of Advanced Industrial & Technology 赤泥に含まれる塩素分の除去方法
CN1579942A (zh) * 2004-05-14 2005-02-16 山东铝业股份有限公司 两组份烧结法氧化铝制备工艺
CN1785813A (zh) * 2005-11-24 2006-06-14 山东铝业股份有限公司 烧结法氧化铝生产中高浓度溶出液的生产方法

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
DE19903011A1 (de) * 1999-01-26 2000-08-03 Akw Apparate Verfahren Verfahren zum Trennen und Entsorgen des sandigen Anteils des bei der Verarbeitung von Bauxit mittels heißer Natronlauge entstehenden Rotschlamms sowie Anordnung zur Durchführung des Verfahrens
CN1406871A (zh) * 2001-08-27 2003-04-02 中南大学 一种高浓度铝酸钠溶液的制备方法
CN1370741A (zh) * 2002-03-26 2002-09-25 贵州铝厂 氧化铝生产烧结法赤泥分离方法
JP2004284925A (ja) * 2003-03-25 2004-10-14 National Institute Of Advanced Industrial & Technology 赤泥に含まれる塩素分の除去方法
CN1579942A (zh) * 2004-05-14 2005-02-16 山东铝业股份有限公司 两组份烧结法氧化铝制备工艺
CN1785813A (zh) * 2005-11-24 2006-06-14 山东铝业股份有限公司 烧结法氧化铝生产中高浓度溶出液的生产方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107720794A (zh) * 2017-11-09 2018-02-23 茌平信发华宇氧化铝有限公司 沉降槽结疤碱煮及再利用系统及工作方法
CN107720794B (zh) * 2017-11-09 2023-10-10 茌平信发华宇氧化铝有限公司 沉降槽结疤碱煮及再利用系统及工作方法

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CN100571878C (zh) 2009-12-23
CN100998964A (zh) 2007-07-18

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