EP4277752A1 - Traitement de scories - Google Patents

Traitement de scories

Info

Publication number
EP4277752A1
EP4277752A1 EP22704425.2A EP22704425A EP4277752A1 EP 4277752 A1 EP4277752 A1 EP 4277752A1 EP 22704425 A EP22704425 A EP 22704425A EP 4277752 A1 EP4277752 A1 EP 4277752A1
Authority
EP
European Patent Office
Prior art keywords
slag
fraction
sub
less
crusher
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.)
Pending
Application number
EP22704425.2A
Other languages
German (de)
English (en)
Inventor
Tom WALANDER
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.)
Addforce Services Ltd
Original Assignee
Addforce Services 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 Addforce Services Ltd filed Critical Addforce Services Ltd
Publication of EP4277752A1 publication Critical patent/EP4277752A1/fr
Pending legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00—Crushing or disintegrating by reciprocating members
    • B02C1/005—Crushing or disintegrating by reciprocating members hydraulically or pneumatically operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00—Crushing or disintegrating by reciprocating members
    • B02C1/14—Stamping mills
    • 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
    • C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
    • 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
    • C22B7/04—Working-up slag

Definitions

  • the present invention relates to the slag processing, in particular for recovering iron from this byproduct.
  • An object of the present invention is to provide a complete recovering of iron from slag.
  • Another object is to effectively break slag, in particular slag of relatively important size, typically above 300 mm.
  • Another object is to separate and recover FeO from slag.
  • Grizzly feeder adapted to separate a slag fraction of less than 60 mm
  • a single rotor crusher adapted to crush a slag sub-fraction of 30 to 60 mm
  • a centrifugal crusher adapted to crush a slag sub-fraction of less than 30 mm
  • a drum magnet and a material spreader that are adapted for sorting said sub-fraction of less than 30 mm.
  • the inventors have surprisingly found that an efficient and complete iron recovery can be obtained when handling the above cited slag fractions.
  • the “less than 30 mm” fraction is particularity useful for separating FeO.
  • the invention also relates to a process for slag processing comprising the following steps:
  • FIG 1 represents one system according to the invention.
  • FIG. 2 illustrates an active free lime process
  • Figure 3 is a transparent view of a hydraulic breaker according to the invention.
  • Figure 4 shows different positions of a hydraulic breaker according to the invention
  • Figure 5 illustrates the combination of a machine and a hydraulic breaker
  • Slag is fed to the hopper by front loader, excavator or dumper.
  • fraction 0-60 (100) mm is separated from the flow to conveyor line to Special crusher (4) passing the Jaw Crusher (3).
  • Fraction 60-800 mm goes into a drum screen (2).
  • Drum screen diameter 2,2 m, is made of highly wear-resistant steel. Slag is divided into 60- 300 mm and over 300 mm fractions. (Opening of the screen can be on range 200 - 300 mm). Drum is supported with four rubber wheels. There are 2 x 22 kW electric gear motor drives.
  • the drum speed is variable.
  • Robust Jaw Crusher (3) are designed for high performance, in order to achieve the lowest possible operating cost per ton of end product produced. Performance has been optimized through solid cavity design and kinematics.
  • the robust Jaw Crusher feature a long stroke, optimized operating speed, and an aggressive motion of the pitman.
  • the crusher is fed by 60-300mm slag (no thicker metal pieces than 340mm). Materials are crushed in smaller fractions. Automatic metal piece control (AMPC) let unbroken pieces going thru without causing damage to Crusher. Materials continue with conveyor (6) to the inclined heavy-duty screen (5).
  • AMPC Automatic metal piece control
  • the screen is a horizontal with double decks.
  • the top screen is very durable wire deck.
  • 0-300 mm slag will be screened to 0 - 30 mm, 30 - 60 mm and 60 - 300 mm fractions.
  • Magnet is for fraction 60 - 300 mm.
  • Magnet is belt drum magnet (7) where diameter of the drum is specified for this fraction. Inside of the drum is permanent magnet which position is fully adjustable.
  • Divider plate will guide steel scrap and slag to right conveyors. Position of the divider plate is fully adjustable.
  • Magnetic metal pieces will go to conveyor and to cleaning drum (8). Slag will go to conveyor and to the Jaw crusher. Magnet PM630(8)
  • Magnet is belt drum magnet where diameter of the drum is specified for this fraction. Inside of the drum is permanent magnet which position is fully adjustable.
  • Divider plate will guide steel scrap and slag to right conveyors. Position of the divider plate is fully adjustable.
  • Magnetic metal pieces will go to conveyor and to cleaning drum (8). Slag > 30 mm will go to the Special crusher (4) and back to the screen (5).
  • Magnetic metal pieces in fractions 30 - 60 and 60 - 300 are cleaned from slag residues in cleaning drum (8).
  • Magnetic metal pieces is fed to drum with conveyor. Diameter of the drum is 3.0 m. There are lifters, which lift metal pieces up. This rotation causes autogenous cleaning where falling of metal pieces will liberate slag residues. When metal pieces drop on steel bed on bottom there is very small amount of wearing.
  • Cleaning Drum is supported with four rubber wheels.
  • the LF slag-processing utilizes a smaller equipment footprint since the slag is already in a small size and can be fed, screened, and run through a specialized centrifugal mill for crushing and metallic separation. To maximize the utilization of equipment capacity and reduce the footprint of the plant.
  • the High-Speed Centrifugal crusher (11) is for crushing the steel slag in fraction 0-30 mm. This mill liberates rest of metallic pieces from lime and silicate. Crushed material goes by conveyor to the fine magnet (9).
  • the input material is fed from above into the center of the centrifugal mill. Material is thrown from the inner rotor to the opposite direction rotating outer rotor by high-speed centrifugal force.
  • the twin rotor eliminates the risk of clogging and allow high throughput rates.
  • Magnet High Speed drum magnet with High Intensity magnet field, where diameter of the drum is specified for this fraction. Inside of the drum is permanent, high intensity magnet, which position is fully adjustable.
  • Material spreaders expand the slag for the whole width of the magnet, in this way the magnet separation is more efficient, and flow can be higher. Material spreader is designed for the harsh environment against material sticking.
  • Divider plate will guide magnetic pieces and slag to right conveyors. Position of the divider plate is fully adjustable.
  • Metals 0 - 30 mm will go by conveyor to Flip flop screen (10) and to storage silos. Slag 0 - 5 mm will go by conveyor to storage silo.
  • Screen is a horizontal flip flop screen with one deck.
  • the screen is very durable 60 mm rubber screen.
  • Deck has surface area app 15 m2.
  • 0-30 mm slag metals will be screened to 0-2 mm and 2 - 30 mm fractions. 2 - 30 mm fraction goes over the deck (over size) to conveyor and silo.
  • This machine is used for effectively braking slag of relatively important size, i.e. above 300 mm.
  • Carrier machine Stationary carrier machine with legs or mobile version with tracks. Power is produced by electric current or by diesel engine.
  • Chassis This consists mainly of the main pipe in which the hammerhead and coupler operates.
  • Power train This consists mainly of adouble luff, which operates on 2 slide bars. A hydraulic double acting main cylinder, which expands and lifts the hammerhead and couplerto the top of the chassis.
  • Hammer head The hammer head runs inside the chassis and consists of several parts. One replaceable hammer point and one ballast block.
  • Coupler The Power train activates a wire, which lifts the coupler.
  • the coupler has electromagnet catcher. The magnet field activates when the coupler reaches the hammerhead and catcher attaches itself to the lifting tap.
  • the coupler has a mechanical locking to prevent the head from falling in the event of a power failure.
  • Carrier machine coupler The hydraulic coupler is the attachment to the carrier machine.
  • figure 4 which shows a basic work cycle.
  • the breaker has a hydraulic drop hammer.
  • the principle of operation is as follows:
  • the coupler releases as it reaches the highest limitation of the chassis.
  • the invention also concerns the production and stabilization of active free lime from slag tailings n fraction 0-5 mm.
  • the resulting product comes from the slag processing process. It is a unique ecological product which binds carbon dioxide from the air, because of the multiplied surface area.
  • the product can be recycled and 100% reused in replacing cement in concrete production. 1.
  • slag tailings are grinded in to fraction below 50 microns.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Food Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

L'invention concerne un système de traitement de scories comprenant un alimentateur à grille (1) conçu pour séparer une fraction de scories inférieure à 60 mm, un broyeur spécial (4) conçu pour broyer une sous-fraction de scories de 30 à 60 mm, un broyeur centrifuge (11) conçu pour broyer une sous-fraction de scories inférieure à 30 mm, ainsi qu'un séparateur magnétique à tambour (9) et un épandeur de matériaux qui sont conçus pour trier ladite sous-fraction inférieure à 30 mm. L'invention concerne également un procédé de traitement de scories comprenant les étapes suivantes : - la séparation d'une fraction de scories inférieure à 60 mm, - le broyage d'une sous-fraction de scories de 30 à 60 mm, - le broyage d'une sous-fraction de scories inférieure à 30 mm, - le tri de ladite sous-fraction inférieure à 30 mm par épandage des scories et application d'une force magnétique sur ces dernières.
EP22704425.2A 2021-01-15 2022-01-14 Traitement de scories Pending EP4277752A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB2021050291 2021-01-15
PCT/IB2022/050294 WO2022153231A1 (fr) 2021-01-15 2022-01-14 Traitement de scories

Publications (1)

Publication Number Publication Date
EP4277752A1 true EP4277752A1 (fr) 2023-11-22

Family

ID=80595559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22704425.2A Pending EP4277752A1 (fr) 2021-01-15 2022-01-14 Traitement de scories

Country Status (2)

Country Link
EP (1) EP4277752A1 (fr)
WO (1) WO2022153231A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1478826A (en) 1922-04-13 1923-12-25 Ellsworth A Hawthorne Automobile mirrorscope bracket
JPS62294140A (ja) 1986-06-11 1987-12-21 Nippon Jiryoku Senko Kk 製鉄所から発生するスラグの処理方法
DE10206834A1 (de) * 2001-02-19 2002-08-29 Georg Schons Anlage und Verfahren für die Behandlung von metallhaltigem Haufwerk
KR100369432B1 (ko) * 2002-08-02 2003-01-24 주식회사 한국종합기술개발공사 제강 슬래그를 이용한 골재 제조방법 및 장치
WO2009089906A1 (fr) * 2008-01-15 2009-07-23 Recoval Belgium Procédé de production de mortier ou de béton
DE602009000969D1 (de) * 2008-05-30 2011-05-12 Recco B V Verfahren zur Trennung metallhaltiger Teile aus Trockenschlacke und Verwendung dieses Verfahrens für eine Müllverbrennungsschlacke
US9016477B2 (en) 2012-03-19 2015-04-28 Mid-American Gunite, Inc. Method and system for processing slag material

Also Published As

Publication number Publication date
WO2022153231A1 (fr) 2022-07-21

Similar Documents

Publication Publication Date Title
JP5204888B1 (ja) 鉄系材料及び再生砂の製造装置
CN103648652B (zh) 用于从不同密度和/或坚度的材料机械地分离聚块的设备
Gill Materials beneficiation
WO1996001332A1 (fr) Procede et appareil de recyclage de boites d'aluminium utilisees
CN103521699A (zh) 粘土旧砂再生系统
US3283698A (en) Refining apparatus
US3081954A (en) Method and apparatus for recovering reusable metallics from steel making slag and refuse
KR100358899B1 (ko) 폐콘크리트 골재화장치
CN110787895A (zh) 一种矿山硅质原料的破碎系统和破碎工艺方法
KR101550491B1 (ko) 산업 폐기물 및 지금고철 순도를 극대화하기 위한 파쇄 및 선별 시스템
WO2022153231A1 (fr) Traitement de scories
CN202316082U (zh) 高压辊磨前的精矿筛分除杂系统
CN202516839U (zh) 炉渣处理装置
EP0785028A1 (fr) Appareil de solidification et de traitement de matériaux en fusion
CN102531420B (zh) 炉渣处理工艺及装置
AU669823B2 (en) Method and plant for grinding old brasques and similar products
CN108940540A (zh) 一种使用冲击破碎快速获取矿石的方法
CN202356148U (zh) 立磨排铁结构
KR101515279B1 (ko) 파쇄용 조크러셔 장치
CN102380443A (zh) 立磨排铁结构
KR20230020763A (ko) 순도가 좋은 고철만을 선별하여 재생 자원화 가능한 파쇄 및 선별 시스템
CN109834043A (zh) 一种废砂回收流水线
CN219334528U (zh) 一种钢渣立磨外排物料二次磁选排铁装置
CN220901403U (zh) 废铝破碎提纯分选线
CN111940125B (zh) 一种回收低品位金尾矿中贵金属的方法及系统

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230726

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)