EP0675762B1 - Procede et installation pour le broyage de vieilles brasques et de produits similaires - Google Patents

Procede et installation pour le broyage de vieilles brasques et de produits similaires Download PDF

Info

Publication number
EP0675762B1
EP0675762B1 EP94928436A EP94928436A EP0675762B1 EP 0675762 B1 EP0675762 B1 EP 0675762B1 EP 94928436 A EP94928436 A EP 94928436A EP 94928436 A EP94928436 A EP 94928436A EP 0675762 B1 EP0675762 B1 EP 0675762B1
Authority
EP
European Patent Office
Prior art keywords
crusher
grinder
products
grinding
finished product
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP94928436A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0675762A1 (fr
Inventor
Francis Desrumaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F C B
Original Assignee
F C B
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 F C B filed Critical F C B
Publication of EP0675762A1 publication Critical patent/EP0675762A1/fr
Application granted granted Critical
Publication of EP0675762B1 publication Critical patent/EP0675762B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/085—Cell construction, e.g. bottoms, walls, cathodes characterised by its non electrically conducting heat insulating parts

Definitions

  • Old pot liners are carbon products that come from the demolition of the lining of the walls and the bottom of the tanks electrolysis of the alumina constituting the cathode. This coating wears out and gets deteriorates and it is necessary to replace it periodically with a coating new.
  • the operation of demolishing the coating, called debridging, is performed by pneumatic tools and produces large blocks may contain inclusions of metals such as iron or aluminum. These blocks are then reduced by conventional means to a size which allows passage through a square trunk grid of approximately 400 mm.
  • Old pot lining is heavily impregnated with products harmful, such as fluorides and cyanides. Until now, they were landfills, but new regulations on pollution and environmental protection means treating them, for example calcining them, to eliminate harmful products and possibly allow recovery carbon constituents.
  • the invention relates more particularly to factories aluminum production in which the treatment of old pot lining requires a prior reduction of these potlaces into pieces whose size does not exceed a few millimeters, and relates to a process and a grinding plant to achieve this result with only two reduction stages and screening.
  • the grinding operation is not carried out with a apparatus for providing a high reduction ratio so as to ability to obtain grains of sufficient fineness directly. It is also note that these are crushed again in the following. This document is in fact mainly on the subsequent physico-chemical treatment of the grains.
  • the process which is the subject of the present invention is characterized in that that it involves a crushing operation in which the old pot lining are reduced to pieces whose dimensions do not exceed 50 mm, a screening operation to separate the grains having a size of a few millimeters and constituting the finished product, and a grinding operation allowing to reduce the rejection of screening to the dimensions of the finished product.
  • the grains of the finished product will all have dimensions less than 2.5 to 3 mm.
  • the products of the grinding operation may be returned to screening.
  • the present invention also relates to the use of a grinding plant for old pot lining, or similar products polluted by metals and / or harmful products, including a crusher, a screen, the mesh size corresponds to that of the finished product, a vibrating mill cone, means for transporting the products leaving the screen to the screen crusher and possibly those coming out of the crusher and means for send the screen rejects to the entrance of the crusher, for the implementation of the process described above.
  • a grinding plant for old pot lining, or similar products polluted by metals and / or harmful products including a crusher, a screen, the mesh size corresponds to that of the finished product, a vibrating mill cone, means for transporting the products leaving the screen to the screen crusher and possibly those coming out of the crusher and means for send the screen rejects to the entrance of the crusher, for the implementation of the process described above.
  • the vibrating cone crusher is a crusher in which the cone or the tank is placed vibrations, the other element, tank or cone, of the mill being fixed or mobile.
  • the shredders of this type are capable of a high reduction ratio compared to cone crushers classics whose movements of the cone are controlled by an eccentric.
  • the crusher may be a jaw crusher in which the jaws form between them an angle less than 20 °. This reduced angle promotes the taking of reputable products soapy like old pot lining.
  • an autogenous or semi-autogenic grinder can be used with peripheral output.
  • Figure 1 The installation of Figure 1 consists essentially of a feed hopper 10, jaw crusher 12, vibrating cone crusher 14, screen 16, two endless belt conveyors 18 and 20, an elevator 22, a dust filter 24 and a silo 26.
  • the hopper 10 is provided with a vibrating extractor 28 which makes it possible to load the blocks of which it is filled on the conveyor 18 supplying the crusher 12.
  • Separators magnetic 30 and eddy current separators 31, to eliminate scrap and other metal parts, are placed on the conveyors 18 and 20 and / or at their jetty.
  • Crusher 12 is a single acting jaw crusher. This device is classic construction except for the angle ⁇ formed by the jaws between them which is approximately 16 ° and significantly lower than that usually adopted for this type of crusher. This reduced angle favors the taking of pondered soapy products such as old brasques.
  • the inlet opening of the crusher 12 is sufficient to absorb blocks passing through through a 400 mm square mesh grid and its outlet opening is sized to that the blocks are reduced to pieces having practically all smaller dimensions about 50 mm.
  • the crushed product is loaded on the transporter 20 and transported by it and the elevator 22 to the screen 16. This is equipped with a mesh grid of a few millimeters aside, for example 3 mm. The products having passed through this grid are stored in silo 26.
  • the screen 16 is also equipped with a 50 mm mesh upper grid which allows recover and eliminate any enormous, mainly pieces of aluminum, allegedly crushed and rejected by the crusher 14.
  • Refusals from screen 16 whose dimensions are greater than 3 mm, are sent to a buffer hopper 32 which feeds the crusher 14 and allows it to be kept charged permanence, which is an essential condition for its effectiveness.
  • the grinder 14, shown in FIG. 2, is made up, like the cone grinders conventional, by a frame 40 carrying at its upper part a tank 42 in which is fixed a wear part 44 in the form of a hollow cone trunk, called a concave, and by a cone 46 placed inside the concave and resting on a spherical surface whose center is located on the axis of the concave and which allows the cone to rotate around its axis and to perform a movement roundabout inside the concave.
  • the cone movements are controlled by an eccentric
  • these movements are caused by an eccentric mass 48 rotatably mounted on the tail of the cone and driven in rotation by a motor 50.
  • This mill has a reduction ratio of the order of 20, significantly higher than that of a conventional cone crusher.
  • the products leaving the mill 14 are loaded onto the conveyor 20 and transported, with the products leaving the crusher 12, up to the screen 16.
  • the name vibrating cone crusher used in this description covers all cone crushers where one of the elements, cone or tank, or the two are vibrated by any appropriate means, not imposing a trajectory predetermined to said element.
  • the jaw crusher could be replaced by other devices capable of reduce 400 mm blocks into pieces of 50 mm or smaller.
  • We could, in In particular, use an autogenous or semi-autogenic mill with peripheral output.
  • This device which consists of a drum with a horizontal axis whose diameter is greater than the length and which is rotated about its axis, by appropriate means, is supplied with through a central opening provided on one of the bottoms and has on its wall, near the other bottom, openings whose dimensions are chosen to let pass only the pieces whose size is less than the maximum size desired.
  • FIG 3 shows the diagram of an installation including an autogenous grinder designated by the reference number 12 '. All other devices in this installation are designated by the same reference number as in Figure 1.
  • the crusher 12 ' has on one of its bottoms a central opening into which opens a feed chute 28, and openings are provided on its cylindrical wall, near on the other bottom, for the evacuation of crushed products. These openings are surrounded by a annular casing provided at its base with an airlock for the evacuation of crushed products and connected to the suction of a fan through the filter 24.
  • the fine fraction of the ground product is driven by the air current flowing in the grinder and recovered in the filter.
  • fine crushed products could be pneumatically discharged through an opening center of the bottom of the mill adjacent to the peripheral openings.
  • the autogenous shredder 12 'reduces the blocks of 400 mm into pieces whose size is around 30 mm and the vibrating cone crusher 14 operates in open circuit (without screening crushed products and recycling of rejects), the crushed products practically all having a size less than 3 mm.
  • the invention is not limited to the grinding of old pot lining but applies also to similar materials, polluted by metals and / or harmful products, such as cyanides, fluorides, etc., for example in briquetting or refractory linings of blast furnaces steel or metallurgical furnaces.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crushing And Grinding (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)
EP94928436A 1993-09-28 1994-09-27 Procede et installation pour le broyage de vieilles brasques et de produits similaires Expired - Lifetime EP0675762B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9311492A FR2710554B1 (fr) 1993-09-28 1993-09-28 Procédé et installation pour le broyage de vieilles brasques et de produits similaires.
FR9311492 1993-09-28
PCT/FR1994/001121 WO1995009052A1 (fr) 1993-09-28 1994-09-27 Procede et installation pour le broyage de vieilles brasques et de produits similaires

Publications (2)

Publication Number Publication Date
EP0675762A1 EP0675762A1 (fr) 1995-10-11
EP0675762B1 true EP0675762B1 (fr) 1999-11-17

Family

ID=9451282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94928436A Expired - Lifetime EP0675762B1 (fr) 1993-09-28 1994-09-27 Procede et installation pour le broyage de vieilles brasques et de produits similaires

Country Status (13)

Country Link
US (1) US5558279A (zh)
EP (1) EP0675762B1 (zh)
CN (1) CN1115172A (zh)
AU (1) AU669823B2 (zh)
BR (1) BR9405604A (zh)
CA (1) CA2150367C (zh)
DE (1) DE69421687T2 (zh)
EG (1) EG20317A (zh)
FI (1) FI952498A (zh)
FR (1) FR2710554B1 (zh)
NZ (1) NZ273974A (zh)
WO (1) WO1995009052A1 (zh)
ZA (1) ZA947539B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109127074A (zh) * 2018-07-30 2019-01-04 平利县中皇野生艾科研工贸有限公司 多级破碎系统、多级艾绒制备工艺、四级艾草破碎系统

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6689092B2 (en) 2000-03-03 2004-02-10 Boehringer International Gmbh Needle-less injector of miniature type
ES2306618B1 (es) * 2008-04-04 2009-07-20 Xiloga, S.L Procedimiento de reciclado de spent pot linings (spls) procedentes de la produccion de aluminio primario.
CA2640514A1 (en) * 2008-09-18 2010-03-18 Kyle Alan Bruggencate Method and apparatus for processing an ore feed
CN102553700A (zh) * 2011-07-06 2012-07-11 洛阳宇航重工机械有限公司 一种破碎氧化铝结壳块的斗提生产线装置和方法
CN111111898B (zh) * 2020-01-23 2022-04-12 廉博 一种电解壳面块直接上净化系统消化利用技术工艺
US20220032314A1 (en) * 2020-07-29 2022-02-03 Chester Arthur Clark Recycling waste refractory material
CN114733598A (zh) * 2022-04-14 2022-07-12 安徽美岚智能装备制造有限公司 一种铜套式细碎型圆锥破碎机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326479A (en) * 1965-02-18 1967-06-20 Union Carbide Corp Jaw crusher
AU3995968A (en) * 1968-07-01 1971-01-07 Comalco Aluminium Chell Bay) Limited Separation of reduction and/or refining bath materials from carbonaceous residues
NL134536C (zh) * 1968-09-19
US4113832A (en) * 1977-11-28 1978-09-12 Kaiser Aluminum & Chemical Corporation Process for the utilization of waste materials from electrolytic aluminum reduction systems
GB2056425A (en) * 1979-08-06 1981-03-18 Alcan Res & Dev Treatment of wastes containing water-leachable fluorides
US4765546A (en) * 1986-02-24 1988-08-23 Stewart Gerald W Jaw-type crushing apparatus
DE3717976A1 (de) * 1987-05-27 1988-12-08 Krupp Polysius Ag Verfahren und anlage zur zerkleinerung von mahlgut
DK161680C (da) * 1989-12-07 1992-01-27 Tarco Vej As Fremgangsmaade og anlaeg til knusning af slagge hidroerende fra staalproduktion
DE4320025A1 (de) * 1993-06-17 1994-12-22 Krupp Polysius Ag Mahlanlage und Verfahren zum Mahlen und Sichten von sprödem Mahlgut
DE4337215A1 (de) * 1993-10-30 1995-05-04 Kloeckner Humboldt Deutz Ag Umlaufmahlanlage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109127074A (zh) * 2018-07-30 2019-01-04 平利县中皇野生艾科研工贸有限公司 多级破碎系统、多级艾绒制备工艺、四级艾草破碎系统
CN109127074B (zh) * 2018-07-30 2021-06-15 平利县中皇野生艾科研工贸有限公司 多级破碎系统、多级艾绒制备工艺、四级艾草破碎系统

Also Published As

Publication number Publication date
DE69421687T2 (de) 2001-05-03
EP0675762A1 (fr) 1995-10-11
WO1995009052A1 (fr) 1995-04-06
AU7786594A (en) 1995-04-18
CN1115172A (zh) 1996-01-17
AU669823B2 (en) 1996-06-20
DE69421687D1 (de) 1999-12-23
CA2150367A1 (fr) 1995-04-06
NZ273974A (en) 1996-02-27
ZA947539B (en) 1995-06-23
FR2710554B1 (fr) 1995-12-01
EG20317A (en) 1998-10-31
FI952498A0 (fi) 1995-05-23
FI952498A (fi) 1995-05-23
US5558279A (en) 1996-09-24
BR9405604A (pt) 1999-09-08
FR2710554A1 (fr) 1995-04-07
CA2150367C (fr) 2000-02-01

Similar Documents

Publication Publication Date Title
FI87741B (fi) Anordning foer hantering av material
KR102034411B1 (ko) 사형주조용 주물사 공급장치
KR101461401B1 (ko) 폐콘크리트의 순환골재 생산을 위한 고속 콘크라셔의 파쇄물 자동공급장치
EP0675762B1 (fr) Procede et installation pour le broyage de vieilles brasques et de produits similaires
CN113102028B (zh) 一种建筑废弃物破碎机
KR101404440B1 (ko) 폐원자재 재활용 처리 장치
US3283698A (en) Refining apparatus
KR101431526B1 (ko) 폐원자재 재활용 처리 장치
KR101546911B1 (ko) 직렬 트윈타입 원통드럼 파쇄기를 이용한 콘크리트용 순환 굵은골재 생산 장치
JP2003071317A (ja) 破砕・整粒・研磨装置
CH458457A (fr) Procédé pour séparer la matière active contenue dans des batteries d'accumulateurs usagées et appareil pour la mise en oeuvre de ce procédé
EP2470303B1 (fr) Dispositif compact de cisaillage ou dechiquetage et de broyage de produits a broyer
FR2710557A1 (fr) Installation pour la fragmentation des rébuts et déchets carbonés d'une usine de production d'aluminium.
WO2012020201A1 (fr) Dispositif de separation de produits ferreux et non ferreux issus de broyage, d'incineration ou autre
WO1992010297A1 (fr) Broyeur a marteaux de faible encombrement pour le dechiquetage d'objets metalliques ou autres
FR2710556A1 (fr) Installation pour la fragmentation de produits carbonés recyclables et des rébuts d'une usine de production d'aluminium.
KR101420621B1 (ko) 폐원자재 재활용 처리 장치
KR102457594B1 (ko) 절삭칩 재활용을 위한 연속처리장치
FR2793172A1 (fr) Procede de valorisation de matiere
CN210815550U (zh) 一种建筑施工用筛沙装置
JPS6349264A (ja) 砂利再生装置
CN218654786U (zh) 一种液压破碎机
CN216368107U (zh) 一种矿石开采用筛选装置
CN220011456U (zh) 一种石材进料仓喂料装置
KR200370529Y1 (ko) 재활용 모래 선별장치

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE LI SE

17P Request for examination filed

Effective date: 19950927

17Q First examination report despatched

Effective date: 19970616

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE LI SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69421687

Country of ref document: DE

Date of ref document: 19991223

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030904

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030930

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20031009

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050401

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL