WO2009146591A1 - Procede de traitement de recuperation de l’acide use produit lors du traitement hydrometallurgique de silicium - Google Patents

Procede de traitement de recuperation de l’acide use produit lors du traitement hydrometallurgique de silicium Download PDF

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Publication number
WO2009146591A1
WO2009146591A1 PCT/CN2008/071403 CN2008071403W WO2009146591A1 WO 2009146591 A1 WO2009146591 A1 WO 2009146591A1 CN 2008071403 W CN2008071403 W CN 2008071403W WO 2009146591 A1 WO2009146591 A1 WO 2009146591A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
waste acid
processing method
recovery processing
silicon
Prior art date
Application number
PCT/CN2008/071403
Other languages
English (en)
Chinese (zh)
Inventor
孙坤泽
张辉贤
Original Assignee
佳科太阳能硅(厦门)有限公司
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 佳科太阳能硅(厦门)有限公司 filed Critical 佳科太阳能硅(厦门)有限公司
Publication of WO2009146591A1 publication Critical patent/WO2009146591A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • 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
    • C22B7/006—Wet processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
    • 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

Definitions

  • the present invention relates to a waste acid recovery treatment method, specifically, a method for recovering mixed acid from waste acid by diffusion dialysis in wet silicon smelting, and further based on potential, pH and related anion concentration
  • a waste acid recovery treatment method specifically, a method for recovering mixed acid from waste acid by diffusion dialysis in wet silicon smelting, and further based on potential, pH and related anion concentration
  • the main object of the present invention is to provide a waste acid recovery treatment method for wet silicon smelting to reduce the amount of waste acid neutralization treatment, to facilitate recovery of waste acid, and to avoid emissions, thereby avoiding environmental pollution.
  • a secondary object of the present invention is to provide a waste acid recovery treatment method for wet silicon smelting to distinguish various acids in the waste acid, so that the recovered spent acid can be fully utilized in production.
  • a waste acid recovery treatment method for wet silicon smelting comprising the following steps:
  • the second step, acid recovery The pretreated spent acid is in the diffusion dialysis device, and the metal ions are trapped by the anion exchange membrane to recover the mixed acid.
  • the first step of the filtration system includes a buffer tank, a sand filter and a security filter.
  • the security filter can trap particles larger than 5 microns in the spent acid to ensure that the anion exchange membrane is not scratched or clogged by the suspension of large particles.
  • the diffusion dialysis device of the second step consists of an anion exchange membrane, a separator and a clamping device.
  • the separator is a support for the anion exchange membrane and a water flow passage, and the clamping device is made of iron plates, bolts or hydraulic components.
  • the anion exchange membrane and the separator are composed in one piece.
  • the anion exchange membrane uses a dialysis membrane.
  • the separator material can be made of polyvinyl chloride, polyethylene, polypropylene plastic and rubber.
  • the present invention also adds the third step, acid detection and ratio: through the test of potential, PH value and related anion concentration (for specific methods, see GB/T13025.8-1991, GB T15453-95, GB/t
  • the type of recovered acid of the present invention may include H 2 S0 4 , HC1, HF, HNO 3 , CH 3 COOH, etc., and the metal ions involved mainly include transition metal ions, rare earth ions, iron magnesium calcium and the like.
  • the waste acid recovery method of the present invention uses a diffusion dialysis principle, and diffusion dialysis is a process of migrating a solute in a high concentration solution through a film to a low concentration solution.
  • the key component of the diffusion dialysis device is an anion exchange membrane, which can be Different models are used for different purposes. Since there is a large concentration difference between the spent acid solution and the pure water at both ends of the anion exchange membrane, the concentration difference is the driving force of diffusion dialysis, thereby promoting the migration of the acid molecule and the salt molecule to the low concentration pure water, and
  • the anion exchange membrane used in the invention has a fixed group with a positive charge, and only allows anion to permeate and block the cation.
  • the main process of purifying the spent acid is to imitate the filtration of the human liver. Therefore, the diffusion dialysis device only allows the acid molecules to pass through. The salt molecules can't pass, and continue to separate the acid and salt in the original solution.
  • the beneficial effects of the present invention are: ⁇ treatment of waste acid (acid wastewater) in the silicon purification industry by diffusion dialysis, intercepting metal ions in the waste acid, and recovering the mixed acid, the method reduces the amount of waste acid neutralization treatment, Recycle waste acid to avoid emissions and avoid environmental pollution.
  • the present invention further determines the acid ion concentration by detecting the potential of the acid, the pH value and the related anion concentration, thereby determining the ratio of various acids, and then mixing with the concentrated acid to re-use as the acid washing liquid. , so that the recovered waste acid can be fully utilized in production.
  • Figure 1 is a flow chart of the overall process of the present invention.
  • Figure 2 is a working principle diagram of the diffusion dialyzer shown in Figure 1.
  • the diffusion dialysis device of the present invention is composed of an anion exchange membrane, a separator and a clamping device, wherein an anion exchange membrane (such as a dialysis membrane) is a key component of the diffusion dialysis machine.
  • an anion exchange membrane produced by Shandong Tianwei Membrane Technology Co., Ltd. can be used, and different models can be selected according to different uses.
  • the separator is a support for the anion exchange membrane and a water flow passage, and the separator material can be made of polyvinyl chloride, polyethylene, polypropylene plastic, rubber or the like. Clamping devices often use iron plates, bolts or hydraulic components to form an anion exchange membrane and separator.
  • the process flow of the present invention is as follows:
  • the waste acid solution is transported by an acid pump, and sequentially passes through a buffer tank, a sand filter, and a security filter to initially separate impurities such as suspended solids and silicon powder.
  • the mixed acid is recovered by controlling the flow rate of the pure water and the waste acid, and intercepting the metal ions in the waste acid solution by using the homogeneous anion exchange membrane.
  • the recovered mixed acid is sampled and tested by potential, pH and related anion concentration (for details, see GB/T13025.8-1991, GB T15453-95, GB/tl3 083-2002, GB320-2006, ion chromatography IC and other methods), to obtain the acid ion concentration, thereby determining the proportion of various acids, and then according to the needs of the production process, through the law of elemental balance and mass balance, the simultaneous equations, calculate the new acid to be added The amount and amount of pure water are blended into a new pickling solution.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Urology & Nephrology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

L’invention concerne un procédé de traitement de récupération de l’acide usé produit lors du traitement hydrométallurgique de silicium. Ce procédé comprend des étapes de filtration, de dialyse diffusive, de détection et dosage d’acide. Lors de l’étape de filtration, les matières en suspension et la poudre de silicium sont séparées. Une membrane d’échange anionique sépare les ions métalliques et l’acide mélangé est récupéré. Enfin, la concentration de l’acide est ajustée et l’acide présentant la concentration souhaitée est obtenu.
PCT/CN2008/071403 2008-06-05 2008-06-23 Procede de traitement de recuperation de l’acide use produit lors du traitement hydrometallurgique de silicium WO2009146591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810071191.5 2008-06-05
CNA2008100711915A CN101597095A (zh) 2008-06-05 2008-06-05 湿法冶硅的废酸回收处理方法

Publications (1)

Publication Number Publication Date
WO2009146591A1 true WO2009146591A1 (fr) 2009-12-10

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PCT/CN2008/071403 WO2009146591A1 (fr) 2008-06-05 2008-06-23 Procede de traitement de recuperation de l’acide use produit lors du traitement hydrometallurgique de silicium

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CN (1) CN101597095A (fr)
WO (1) WO2009146591A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103172036A (zh) * 2013-03-27 2013-06-26 刘立文 一种利用纳米材料滤网对硫酸进行脱色的方法
CN112759117A (zh) * 2020-12-17 2021-05-07 佛山市南海区大佳机电设备有限公司 一种废酸处理用铝离子回收设备
CN113088687A (zh) * 2021-04-15 2021-07-09 攀钢集团攀枝花钢铁研究院有限公司 一种适用于钒渣连续浸出的卧式搅拌装置
CN115403174A (zh) * 2022-10-13 2022-11-29 安徽华铂再生资源科技有限公司 铅酸蓄电池的废酸处理工艺及扩散渗析处理系统

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105293745B (zh) * 2014-05-29 2018-08-31 宝山钢铁股份有限公司 冷轧酸洗废水资源化处理工艺系统
CN106167319B (zh) * 2016-08-11 2019-06-14 长沙矿冶研究院有限责任公司 一种从铌钽冶炼产生的废酸液中回收酸、铌和钽的方法
CN108950690A (zh) * 2017-05-19 2018-12-07 浙江昱辉阳光能源有限公司 一种硅料回收酸洗方法及装置
CN108358343B (zh) * 2018-02-13 2020-09-08 武汉船用机械有限责任公司 电镀污水处理方法
CN109206322A (zh) * 2018-09-21 2019-01-15 南京元亨化工科技有限公司 一种基于扩散渗析的四丙基氢氧化铵的提纯方法
CN111154983A (zh) * 2020-02-26 2020-05-15 苏州晶洲装备科技有限公司 用于光伏废液中含银废酸液的回收银及混酸的方法和装置
CN114457234A (zh) * 2021-07-23 2022-05-10 江西离子型稀土工程技术研究有限公司 稀土除杂富集离子交换系统及工艺方法
CN114873818A (zh) * 2022-05-24 2022-08-09 日铭电脑配件(上海)有限公司 化抛液在线处理再生方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08144100A (ja) * 1994-11-16 1996-06-04 Asahi Glass Co Ltd アルミニウムの酸エッチング廃液からの酸の分離濃縮回収方法
JP2001278612A (ja) * 2000-03-31 2001-10-10 Nippei Toyama Corp シリコンの回収方法
JP2005034749A (ja) * 2003-07-15 2005-02-10 Jfe Engineering Kk ろ過膜モジュールの酸洗浄廃液の処理方法および処理設備
CN1966400A (zh) * 2005-11-15 2007-05-23 上海闵欣环保设备工程公司 一种处理用硫酸法生产钛白粉过程中产生废酸的方法
WO2007097046A1 (fr) * 2006-02-24 2007-08-30 Ihi Compressor And Machinery Co., Ltd. Procede et appareil de traitement de particule de silicium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08144100A (ja) * 1994-11-16 1996-06-04 Asahi Glass Co Ltd アルミニウムの酸エッチング廃液からの酸の分離濃縮回収方法
JP2001278612A (ja) * 2000-03-31 2001-10-10 Nippei Toyama Corp シリコンの回収方法
JP2005034749A (ja) * 2003-07-15 2005-02-10 Jfe Engineering Kk ろ過膜モジュールの酸洗浄廃液の処理方法および処理設備
CN1966400A (zh) * 2005-11-15 2007-05-23 上海闵欣环保设备工程公司 一种处理用硫酸法生产钛白粉过程中产生废酸的方法
WO2007097046A1 (fr) * 2006-02-24 2007-08-30 Ihi Compressor And Machinery Co., Ltd. Procede et appareil de traitement de particule de silicium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103172036A (zh) * 2013-03-27 2013-06-26 刘立文 一种利用纳米材料滤网对硫酸进行脱色的方法
CN112759117A (zh) * 2020-12-17 2021-05-07 佛山市南海区大佳机电设备有限公司 一种废酸处理用铝离子回收设备
CN113088687A (zh) * 2021-04-15 2021-07-09 攀钢集团攀枝花钢铁研究院有限公司 一种适用于钒渣连续浸出的卧式搅拌装置
CN115403174A (zh) * 2022-10-13 2022-11-29 安徽华铂再生资源科技有限公司 铅酸蓄电池的废酸处理工艺及扩散渗析处理系统

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