WO2014125266A1 - Appareil et procédé d'extraction de plomb - Google Patents

Appareil et procédé d'extraction de plomb Download PDF

Info

Publication number
WO2014125266A1
WO2014125266A1 PCT/GB2014/050400 GB2014050400W WO2014125266A1 WO 2014125266 A1 WO2014125266 A1 WO 2014125266A1 GB 2014050400 W GB2014050400 W GB 2014050400W WO 2014125266 A1 WO2014125266 A1 WO 2014125266A1
Authority
WO
WIPO (PCT)
Prior art keywords
lead
mixture
base
glass
agitating
Prior art date
Application number
PCT/GB2014/050400
Other languages
English (en)
Inventor
Harry Middleton
Jonathan James QUINN
Original Assignee
Ultromex Ltd
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 Ultromex Ltd filed Critical Ultromex Ltd
Publication of WO2014125266A1 publication Critical patent/WO2014125266A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/52—Recovery of material from discharge tubes or lamps
    • 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
    • C22B7/008—Wet processes by an alkaline or ammoniacal leaching
    • 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
    • C22B13/00—Obtaining lead
    • C22B13/04—Obtaining lead by wet processes
    • C22B13/045—Recovery from waste materials
    • 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

  • This invention relates to an apparatus and process for the recovery of lead from glass, and particularly but not exclusively to an apparatus and process for the recovery of lead from Cathode Ray Tube (CRT) scrap material.
  • a Cathode Ray Tube (CRT) generates images by the acceleration of electrons towards a fluorescent screen.
  • monitors for RADAR devices and the representation of electrical waveforms in oscilloscopes.
  • Cathode Ray Tubes (CRTs) formed an integral part of all television sets and computer monitors.
  • a CRT generally contains lead glass, which acts to improve the optical quality of the glass and to shield the user from X-ray radiation emitted during the electron bombardment of the screen.
  • a typical CRT is made from a lead-free screen glass and a funnel glass containing approximately 20% lead, the two being joined by a glass solder containing up to 90% lead. Whilst this lead glass performs a useful role within a CRT, it poses a substantial environmental risk when the CRT reaches the end of its life and is disposed of. Studies have shown that when CRTs are disposed of in landfill sites, lead can leach from the glass and contaminate ground water. The severity of the environmental risk is such that the disposal of CRTs is regulated by legislation in many countries.
  • a method for at least partially dissolving a lead glass in a base comprising the steps of:
  • base as used herein should be interpreted in accordance with the chemical definition thereof, namely a substance capable of accepting protons.
  • the step of agitating said mixture facilitates the dissolution of the lead glass in the base, forming a solution comprising lead silicate and base metasilicate.
  • the method is tor fully dissolving the lead giass in the base, the step ot agitating said mixture preferably being continued until the lead glass has fully dissolved In the base.
  • the base is caustic.
  • Said mixture preferably comprises water.
  • the base is in the form of a 50% saturated solution.
  • the base may comprise sodium hydroxide (NaOH), also known as caustic soda.
  • the base may comprise potassium hydroxide (KOH), also known as caustic potash.
  • the base may comprise calcium oxide (CaO), also known as caustic lime.
  • the step of agitating said mixture is carried out whilst said mixture is contained within a sealed container.
  • said sealed container is pressurised for at least a portion of the step of agitating said mixture.
  • the step of agitating said mixture by ultrasonic agitation comprises directing sound waves towards said mixture to induce compression waves within said mixture, said sound waves being at ultrasonic frequency.
  • the frequency of said sound waves is preferably greater than 1 MegaHertz and preferably less than 5 MegaHertz.
  • the step of directing sound waves towards said mixture preferably comprises directing sound waves from a plurality of locations, said plurality of locations preferably being located around the periphery of the container.
  • the method may further comprise the step of generating said sound waves at ultrasonic frequency.
  • the step of generating said sound waves is preferably effected by an ultrasonic transducer and more preferably effected by a piezoelectric transducer.
  • the method may comprise agitating said mixture by steam sparging, said steam sparging comprising injecting steam into said mixture.
  • said steam is pressurised.
  • the step of agitating said mixture by steam sparging is performed concurrently with the step of agitating said mixture by ultrasonic agitation.
  • the step of agitating said mixture is preferably continued until the temperature of the mixture has exceeded a certain threshold, which is preferably between 50°C and 350°C. More preferably, the threshold is between 180°C and 200°C. Alternatively, or in addition thereto, the step of agitating said mixture may be continued for a certain time-period, said time-period being determined in accordance with the nature of said lead glass.
  • a certain threshold which is preferably between 50°C and 350°C. More preferably, the threshold is between 180°C and 200°C.
  • the step of agitating said mixture may be continued for a certain time-period, said time-period being determined in accordance with the nature of said lead glass.
  • the method may further comprise the step of preparing the lead glass prior to the step of forming said mixture, said step of preparing the lead glass preferably comprising crushing said glass to form glass fragments.
  • the step of crushing said glass may be effected by a vertical impactor.
  • the step of crushing the lead glass comprises crushing said glass to form glass fragments having a diameter of between 0.1 mm and 100mm. It has been found that the range of between 0.1 mm and 100mm is the optimum size for treatment in order to prevent glass fragments from entering the atmosphere. More preferably, the step of crushing the lead glass comprises crushing said glass to form glass fragments having a diameter of between 0.1 mm and 12.5mm. It has been found that the range of between 0.1 mm and 12.5mm provides for maximum efficiency in the lead glass separation process described herein.
  • the method may comprise sorting said glass fragments in accordance with size. Preferably only those glass fragments having a diameter of between 0.1 mm and 100mm are added to said mixture. More preferably, only those glass fragments having a diameter of between 0.1 mm and 12.5mm are added to said mixture. The glass fragments having a diameter of greater than 100mm may be returned for further crushing.
  • an apparatus for at least partially dissolving a lead glass in a base comprising a container for holding a mixture comprising the lead glass and the base, and an ultrasonic transducer for generating sound waves at ultrasonic frequency, the ultrasonic transducer being arranged for directing said sound waves towards said mixture so as to form compression waves within said mixture.
  • the apparatus comprises a plurality of ultrasonic transducers, said transducers being preferably arranged around a periphery of said container.
  • the apparatus may comprise pressurisation means for pressuring said container.
  • the apparatus may comprise steam injection means for effecting steam sparging of said mixture.
  • a method for recovering lead from lead glass comprising the steps of:
  • the method may further comprise the step of crushing the lead glass, this step preferably being carried out prior to the step of forming said mixture.
  • the step of crushing the lead glass comprises crushing the lead glass comprises crushing said glass to form glass fragments having a diameter of between 0.1 mm and 100mm. More preferably, the step of crushing the lead glass comprises crushing said glass to form glass fragments having a diameter of between 0.1 mm and 12.5mm.
  • the method may comprise sorting said glass fragments in accordance with size. Preferably only those glass fragments having a diameter of between 0.1 mm and 100mm are added to said mixture at step (a) above. More preferably, only those glass fragments having a diameter of between 0.1 mm and 12.5mm are added to said mixture at step (a) above. The glass fragments having a diameter of greater than 100mm may be returned for further crushing.
  • the method further comprises the step of removing impurities from said solution, said step preferably being performed intermediate the step of agitating said mixture and the step of adding the base sulphide.
  • the step of removing impurities from said solution preferably comprises removing insoluble impurities i.e. impurities that are not dissolved after completion of the step of agitating said mixture.
  • the step of removing insoluble impurities preferably comprises centrifugation.
  • the step of separating the lead sulphide from the base metasilicate is effected by centrifugation.
  • the step of agitating said mixture is carried out whilst said mixture is contained within a sealed container.
  • said sealed container is pressurised for at least a portion of the step of agitating said mixture.
  • the step of agitating said mixture comprises ultrasonic agitation.
  • the step of agitating said mixture by ultrasonic agitation comprises directing sound waves towards said mixture to induce compression waves within said mixture, said sound waves being at ultrasonic frequency.
  • the frequency of said sound waves is preferably greater than 1 MegaHertz and preferably less than 5 MegaHertz.
  • the step of directing sound waves towards said mixture preferably comprises directing sound waves from a plurality of locations, said plurality of locations preferably being located around the periphery of the container.
  • the method may further comprise the step of generating said sound waves at ultrasonic frequency.
  • the step of generating said sound waves is preferably effected by an ultrasonic transducer and more preferably effected by a piezoelectric transducer.
  • the step of agitating said mixture comprises steam sparging.
  • the step of agitating said mixture comprises both ultrasonic agitation and steam sparging, which are prferably performed concurrently.
  • the method may further comprise the step of reacting the lead sulphide with a chloride of iron, this step being carried out after the step of separating the lead sulphide.
  • lead sulphide reacts with a chloride of iron to produce lead chloride, which is a highly safe compound of lead.
  • the method may further comprise the step of purifying the base metasilicate, said step preferably comprising passing the base metasilicate through a medium to remove any remaining metal, the concentration of this remaining metal typically being a few parts per billion.
  • the medium comprises a ligand.
  • an assembly for recovering lead from lead glass comprising: a dissolving apparatus for partially dissolving the lead glass in the base to produce a solution comprising lead silicate and base metasilicate, the apparatus being as hereinbefore described; a precipitation tank for precipitating lead sulphide, the precipitation tank being arranged to receive a base sulphide and at least some of said solution from said apparatus; and,
  • separation means for separating the precipitated lead sulphide, the separation means being arranged to receive at least some of the lead sulphide from the precipitation tank.
  • the separation means is arranged to receive substantially all of the lead sulphide from the precipitation tank.
  • the separation means preferably comprises a centrifuge.
  • the assembly may comprise purification means disposed intermediate the dissolving apparatus and the precipitation tank, the purification means preferably being adapted for removing insoluble impurities from said solution.
  • the purification means may comprise a centrifuge.
  • the assembly may comprise glass fragmentation means for producing lead glass fragments of preferably between 0.1 mm and 100mm diameter, and more preferably between 0.1 mm and 12.5mm diameter.
  • the glass fragmentation means may comprise a vertical impactor.
  • the assembly may comprise sorting means for sorting the glass fragments according to size.
  • the sorting means is preferably arranged to pass glass fragments having a diameter of between 0.1 mm and 100mm to the dissolving apparatus and is preferably to return glass fragments having a diameter of greater than 100mm to the glass fragmentation means. More preferably, the sorting means is arranged to pass glass fragments having a diameter of between 0.1 mm and 12.5mm to the dissolving apparatus and return glass fragments having a diameter of greater than 12.5mm to the glass fragmentation means.
  • the assembly may comprise lead sulphide treatment means for receiving the lead sulphide from the separation means and reacting the lead sulphide with a chloride of iron to form lead chloride.
  • the assembly may comprise base metasilicate purification means for purifying the base metasilicate.
  • the base metasilicate purification means is configured to pass the base metasilicate through a medium comprising a ligand.
  • Figure 1 is a schematic side view of an apparatus for dissolving a lead glass in a base in accordance with an embodiment of an aspect of present invention
  • Figure 2 is a schematic illustration of an assembly for recovering lead from lead glass in accordance with an embodiment of another aspect of the present invention, the assembly comprising the apparatus illustrated in figure 1 ;
  • Figure 3 is a flow diagram illustrating a method for dissolving lead glass in a base in accordance with an embodiment of another aspect of the present invention.
  • Figure 4 is a flow diagram illustrating a method for recovering lead from lead glass in accordance with an embodiment of another aspect of the present invention.
  • the apparatus 10 comprises a sealable chamber 1 1 , which includes pressurisation means 12 for increasing the pressure within the chamber 11 relative to atmospheric pressure.
  • a sealable inlet 13 is provided at the top of chamber 1 1 for introducing lead glass and a base to the chamber 1 1.
  • the apparatus 10 comprises a plurality of ultrasonic transducers 14 in the form of piezoelectric crystals.
  • the ultrasonic transducers 14 are disposed about the periphery of the chamber 1 1 and arranged for directing ultrasound pulses into the chamber 11 to induce compression waves in the lead glass and base mixture within the chamber 11.
  • the apparatus 10 comprises steam sparging means in the form of a plurality of inlets 15 connected to a source of pressurised steam (not shown).
  • the steam inlets 15 are disposed at the base of the chamber 1 1 , but it will be appreciated that the steam inlets may alternatively or additionally be disposed in other locations, such as the top of the chamber 1 1.
  • a paddle 16 extends downwardly from the top of the chamber 1 1.
  • the paddle 16 is connected to a motor (not shown) and arranged to rotate about a substantially vertical axis. Since the lead glass and base mixture is initially highly viscous, initial mixing will be attained though ultrasonic agitation and steam sparging only. Once the viscosity of the mixture has reduced to a threshold level, additional agitation and mixing may be achieved through rotation of the paddle 16.
  • the lead glass is prepared by crushing to a size of between 0.1 mm and 25.5mm at step 21.
  • the lead glass is then added to the chamber 1 1 , along with a base such as sodium hydroxide (NaOH) prepared to 50% saturation.
  • NaOH sodium hydroxide
  • the relative quantities of lead glass and sodium hydroxide are such that substantially all of the lead glass will dissolve in the sodium hydroxide solution upon agitation but no more lead glass would have dissolved if it had been added.
  • the quantity of lead glass should be the threshold quantity that will completely dissolve in the volume of sodium hydroxide added to the chamber 11.
  • the agitation process assists the dissolution of the lead glass in the sodium hydroxide.
  • the rotary paddle 16 is energised and further assists with agitation of the mixture at step 24.
  • the process of agitation is continued until all of the lead glass has dissolved in the sodium hydroxide solution, which may be defined by a certain time period.
  • the time may be 3 hours but it will be appreciated that the exact time is dependent upon the nature of the lead glass being dissolved.
  • the point at which all of the lead glass has dissolved may be signified by the interior of the chamber 11 reaching a certain temperature threshold.
  • the temperature threshold may be between 50°C and 350°C, but it will be appreciated that this is again dependent upon the nature of the glass being dissolved.
  • FIG 2 of the drawings there is illustrated an assembly 100 for recovering lead from lead glass.
  • the assembly 100 comprise a caustic tank 101 for storing a base such as a 50% saturated solution of sodium hydroxide.
  • the assembly 100 further comprises a means for storing or generating crushed lead glass 102.
  • Both the caustic tank 101 and the means for storing or generating crushed class 102 define inputs to a pre- mixer chamber 103.
  • the means for storing or generating crushed glass 102 comprises a vertical impactor (not shown) and a sorting mechanism (not shown), the impactor and the sorting mechanism being arranged to transmit only glass fragments having a diameter of between 0.1 mm and 12.5mm to the pre-mixer chamber 103.
  • the pre-mixer chamber 103 is generally cylindrical in shape and has a volumetric capacity of approximately 10 m 3 .
  • the crushed lead glass and sodium hydroxide are initially mixed together in this chamber 103, before passing to the dissolving apparatus 10 illustrated in figure 1.
  • the agitation means 14, 15, 16 provided in the dissolving apparatus 10 causes the crushed lead glass to dissolve in the sodium hydroxide, forming a solution comprising lead silicate and sodium metasilicate.
  • a holding tank 104 Connected to the dissolving chamber 10 is a holding tank 104, which is in turn connected to a first centriguge 105.
  • the first centrifuge 105 is arranged to remove the solid impurities and pass the liquid to dual precipitation tanks 106, the precipitation tanks 106 being arranged to receive a base sulphide such as sodium sulphide from a storage tank 107.
  • a second centrifuge 108 Connected to the precipitation tanks 106 is a second centrifuge 108, which is arranged to remove the precipitate, namely lead sulphide, and pass the liquid to dual product storage tanks 109.
  • the lead glass is prepared by crushing to a size of between 0.1 mm and 25.5mm by the lead glass preparation means 102 at step 201.
  • the lead glass is then passed to the pre-mixer chamber 103, along with a 50% saturated solution of sodium hydroxide at step 202.
  • the relative quantities of lead glass and sodium hydroxide are such that substantially all of the lead glass will dissolve in the sodium hydroxide solution upon agitation but no more lead glass would have dissolved if it had been added.
  • the mixture is passed to the dissolving apparatus 11 at step 203.
  • the dissolving apparatus is sealed and the mixture is agitated as hereinbefore described.
  • the resulting solution comprises predominantly lead silicate and sodium metasilicate. It will be appreciated, however, that certain impurities are also present in the solution.
  • the solution is passed from the dissolving chamber 1 1 to the holding tank 104 and subsequently to the first centrifuge 105 at step 205. The action of the centrifuge separates the solid impurities from the solution to leave a solution of lead silicate, base metasilicate and potentially traces of insoluble impurities.
  • the liquid that passes out of the first centrifuge 105 is subsequently passed to the precipitation tanks 106, whereupon sodium sulphide is added from the storage tank 107.
  • the sodium sulphide reacts with the lead silicate to form lead sulphide, which precipitates out of the solution.
  • the lead sulphide is separated from the solution by the second centrifuge 108 at step 207. Once separated, the lead sulphide is reacted with a chloride of iron at step 208, to form the highly safe compound lead chloride.
  • the liquid that passes from the second centrifuge 108 is subsequently passed though a medium containing a ligand, to remove any potential soluble impurities such as metals in concentrations of a few parts per billion. Once passed through the medium, only pure sodium metasilicate remains, which may be used for a variety of applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Disintegrating Or Milling (AREA)
  • Glass Compositions (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Procédé d'extraction de plomb à partir de verre au plomb. Ce procédé comprend les étapes consistant à: former un mélange comprenant du verre au plomb, de l'eau et une base telle que l'hydroxyde de sodium; agiter le mélange par barbotage de vapeur et par agitation ultrasonore afin de former une solution comprenant du silicate de plomb et du métasilicate basique; ajouter un sulfure basique à ladite solution pour former du sulfure de plomb; et séparer le sulfure de plomb du métasilicate basique par centrifugation.
PCT/GB2014/050400 2013-02-12 2014-02-12 Appareil et procédé d'extraction de plomb WO2014125266A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1302445.0 2013-02-12
GB1302445.0A GB2512814A (en) 2013-02-12 2013-02-12 Apparatus and method for recovery of lead

Publications (1)

Publication Number Publication Date
WO2014125266A1 true WO2014125266A1 (fr) 2014-08-21

Family

ID=47998981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2014/050400 WO2014125266A1 (fr) 2013-02-12 2014-02-12 Appareil et procédé d'extraction de plomb

Country Status (2)

Country Link
GB (1) GB2512814A (fr)
WO (1) WO2014125266A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106498167A (zh) * 2016-10-31 2017-03-15 湘潭大学 一种超声波强化碳酸氢铵为脱硫剂的铅膏脱硫方法
WO2019101633A1 (fr) 2017-11-21 2019-05-31 Creteer Mijndert Cornelis Ernst Ralf Procédé de séparation de revêtement à partir de déchets de verre revêtus et appareil approprié à cet effet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5236134A (en) * 1991-11-05 1993-08-17 Envirocycle Incorporated Method of reclaiming glass from articles formed of leaded glass
EP2455500A1 (fr) * 2010-11-22 2012-05-23 Costech International S.p.A. Procédé de traitement de tubes à rayons cathodiques en fin de vie pour la récupération de silicates solubles et en plomb
WO2012135539A1 (fr) * 2011-03-29 2012-10-04 Greene Lyon Group, Inc. Systèmes et procédés de traitement de verre contenant du plomb

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH680837A5 (fr) * 1991-08-06 1992-11-30 Drisa Polytechnik Ag
CN1199019A (zh) * 1998-03-20 1998-11-18 深圳市工业废物处理站 利用玻壳生产中产生的铅尘制备三盐基硫酸铅的方法
SE513085C2 (sv) * 1998-10-06 2000-07-03 Ecoflow Scandinavia Ab Förfarande för avskiljning av bly från belagt glas
JP2006161080A (ja) * 2004-12-03 2006-06-22 Univ Nihon 鉛含有ガラスから鉛を抽出する方法
JP2012021176A (ja) * 2010-07-12 2012-02-02 Mitsui Mining & Smelting Co Ltd 金属鉛の製造方法
CN102051487B (zh) * 2010-11-19 2012-09-05 北京工业大学 一种从废弃crt玻璃中提取铅的方法
CN102417989A (zh) * 2011-11-24 2012-04-18 上海第二工业大学 一种从回收废旧含铅玻璃中提取金属铅的方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5236134A (en) * 1991-11-05 1993-08-17 Envirocycle Incorporated Method of reclaiming glass from articles formed of leaded glass
EP2455500A1 (fr) * 2010-11-22 2012-05-23 Costech International S.p.A. Procédé de traitement de tubes à rayons cathodiques en fin de vie pour la récupération de silicates solubles et en plomb
WO2012135539A1 (fr) * 2011-03-29 2012-10-04 Greene Lyon Group, Inc. Systèmes et procédés de traitement de verre contenant du plomb

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANDREW J SATERLAY ET AL: "Towards greener disposal of waste cathode ray tubes via ultrasonically enhanced lead leaching", GREEN CHEMISTRY, ROYAL SOCIETY OF CHEMISTRY, CAMBRIDGE, GB, vol. 3, no. 4, 1 January 2001 (2001-01-01), pages 149 - 155, XP009159228, ISSN: 1463-9262, [retrieved on 20010621], DOI: 10.1039/B102671M *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106498167A (zh) * 2016-10-31 2017-03-15 湘潭大学 一种超声波强化碳酸氢铵为脱硫剂的铅膏脱硫方法
CN106498167B (zh) * 2016-10-31 2018-08-03 湘潭大学 一种超声波强化碳酸氢铵为脱硫剂的铅膏脱硫方法
WO2019101633A1 (fr) 2017-11-21 2019-05-31 Creteer Mijndert Cornelis Ernst Ralf Procédé de séparation de revêtement à partir de déchets de verre revêtus et appareil approprié à cet effet

Also Published As

Publication number Publication date
GB201302445D0 (en) 2013-03-27
GB2512814A (en) 2014-10-15

Similar Documents

Publication Publication Date Title
US20240218481A1 (en) Method for recycling lithium batteries
TWI385255B (zh) 由廢棄液晶顯示器回收銦之方法及其裝置
US20140345326A9 (en) Systems and methods for processing lead-containing glass
EP2455500A1 (fr) Procédé de traitement de tubes à rayons cathodiques en fin de vie pour la récupération de silicates solubles et en plomb
EP2813297B1 (fr) Procédé de séparation de métal lourd d'un verre
CA3016281A1 (fr) Procede d'elution de calcium a partir de scories d'acier et procede de recuperation de calcium a partir de scories d'acier
WO2014125266A1 (fr) Appareil et procédé d'extraction de plomb
JP2011245379A (ja) 液晶パネルの再資源化方法
JP2012097288A (ja) 鉛含有ガラスからの鉛回収方法
Innocenzi et al. Leaching of yttrium from cathode ray tube fluorescent powder: Kinetic study and empirical models
JP5482619B2 (ja) 鉛含有ガラスからの鉛回収方法
CN109072336A (zh) 用于处理寿命终止的阴极射线管的工艺
JP2012239945A (ja) 鉛含有ガラスの脱鉛方法
CN103952550A (zh) 一种低钨锡精矿生产仲钨酸铵的综合方法
CN107626244A (zh) 一种真空搅拌式超声波分散破碎处理罐
JP5385924B2 (ja) 液晶パネルからのガラス、透明電極材料の分離・回収方法
CN102643994A (zh) 一种废阴极射线管锥玻璃机械活化湿法硫化处理方法
JP2011235252A (ja) ガラス基板の再資源化方法
JP2009155717A (ja) インジウムの回収方法
US20140154157A1 (en) Process of Treating End-of-Life Cathode Ray Tubes for Lead and Soluble Silicates Recovery
JP2008073619A (ja) 液晶パネルの処理方法
EP3950106A1 (fr) Procédé de production de carbonate de lithium
CN106542561A (zh) 一种用废弃线路板铜浸取液制备纳米氧化铜的方法
KR101367973B1 (ko) 납 성분이 함유된 유리로부터의 납 분리 방법 및 그 장치
CN106167854B (zh) 一种从废含铅玻璃中回收金属铅和制取水玻璃的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14708316

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14708316

Country of ref document: EP

Kind code of ref document: A1