EP3167084A1 - Method and device for processing iron silicate rock - Google Patents
Method and device for processing iron silicate rockInfo
- Publication number
- EP3167084A1 EP3167084A1 EP15749967.4A EP15749967A EP3167084A1 EP 3167084 A1 EP3167084 A1 EP 3167084A1 EP 15749967 A EP15749967 A EP 15749967A EP 3167084 A1 EP3167084 A1 EP 3167084A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- iron
- iron silicate
- silicate rock
- slag
- treatment
- 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.)
- Withdrawn
Links
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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of scrap
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/567—Manufacture of steel by other methods operating in a continuous way
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
-
- 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 invention relates to a process for the treatment of iron silicate rock, in which at least one component is at least partially removed from the iron silicate rock.
- the invention also relates to a device for processing processed iron silicate rock.
- the iron silicate rock is currently being used almost exclusively mechanically.
- the iron silicate stone is produced as slag during the smelting of copper ores.
- iron silicate rock is currently being poured into molds, for example, and the resulting moldings are used for bank attachment. Also is already a granulation of iron silicate stone known. Coarse granules are used for example as gravel for railway embankments. Finer granules are used in sandblasting.
- Iron silicate stone consists essentially of its weight fractions of iron, silicon and oxygen. In addition to the iron content, the iron silicate rock also contains minor elements, for example copper, lead, arsenic, nickel and / or zinc.
- the smelting of copper ores (mainly chalcopyrite) produces large amounts of slag. Based on the amount of valuable metal-containing feed material, 600 kg slag / t ore concentrate in the copper industry generates about three times the amount of slag compared to the iron and steel industry.
- Slag cleaning is already in operation worldwide with the main goal of increasing / maximizing copper output.
- Hydrometallurgical slag flotation After solidification of the slag, a grinding process and then the flotation of sulfidic copper particles. The result is a concentrate that can be returned to the primary process.
- the object of the present invention is to improve a method of the aforementioned type such that an improved economy is provided.
- This object is achieved in that at least one component other than iron is at least partially removed and that the processed iron silicate rock is used for the production of steel pig iron.
- Another object of the present invention is to construct a device of the initially mentioned type such that an improved economy is achieved.
- the device is designed as a device for the production of pig iron or steel.
- the metal content of copper slags has not been used (neither the non-ferrous metals nor the iron content). With a slag amount of 700kt / a, this corresponds to an iron content of 280kt / a.
- the slag is already liquid and therefore only relatively little energy has to be expended to carry out the process. Therefore, the present invention is based on the approach to remove the non-ferrous metals from the slag product and to use the remaining slag product (containing slag formers Si, Ca, Mg, Al and Fe as oxides) as raw material for the production of pig iron or steel.
- This downstream process allows the upstream process steps more flexibility in the processing of copper raw materials.
- the complexity of these raw materials in terms of their composition will continue to increase in the future, which is due to the fact that the existing copper ore deposits are poorer.
- impurities processing huts
- Zn and steel pests such as S and P are important parameters in terms of the steel industry.
- the copper application is crucial.
- the newly developed process according to the invention covers these requirements and pursues the goal of the so-called "zero-waste metallurgy", ie all products resulting from the production process are further processed.
- Circulation products from the copper and steel industries eg, desserts, smoothing, fly ash, food, metal phases
- slags Process temperature e.g., desserts, smoothing, fly ash, food, metal phases
- ⁇ E-oven rectangular, treatment zone, rest zone, tapping executed as overflow, inlet via gutter system, gas input through soil rinsing
- FIG. 1 a schematic representation of the process flow
- FIG. 2 a table for the specification of the starting material
- Fig. 3 A table for the specification of the slag product from the process.
- Fig. 1 shows a schematic representation for carrying out the individual process steps.
- the process sequence in the deep reduction of iron silicate rock to a fayalite or magnetite product is shown as a raw material for use in the iron and steel industry.
- the slag from the primary copper process is preferably charged liquid in the Tiefred uktionsrea.
- the liquid slag preferably has a temperature in the range of 1200 ° C to 1350 ° C. Typical is a temperature value of about 1260 ° C.
- the aim of the process is to separate the precious metals contained in it by selective reduction of the iron.
- the iron remains bound to silicon and / or oxygen as a fayalite product (Fe 2 SiO 4 ) or magnetite product (Fe 3 O 4 ) for further use as a feedstock in the iron and steel industry.
- This product contains other oxides of Ca, Mg or Cr as impurities.
- the specification for the product can be found in the table according to FIG. 3.
- the entry of oxygen must remove the residual sulfur present from the system so that the subsequent reduction period can be carried out efficiently.
- max. 7% solid carbon based on the amount of slag is covered in the molten bath and protected against further oxygen access.
- the CO / CO2 ratio of the process atmosphere must be adjusted so that it does not exceed an oxygen potential of 10 "12 atm.
- the obtained fly ash has a composition of about 40-60% Zn, 10-20% Pb and ⁇ 10% As and can be used as a raw material for the zinc production eg in the so-called rolling process.From the example considered here An annual tonnage of 700,000 1 is to be expected with a flow rate of about 20,000 tonnes.
- the copper content after this process step is still about 0.2-0.3% Cu.
- carbon monoxide is introduced as a reducing agent via rinsing stones arranged on the bottom.
- the advantage of soil flushing lies in the much lower required gas velocity compared to a lancet purging.
- the mineralogy of the slag product can be adapted for the respective application. If the product is to be used, for example, directly in the blast furnace, the fayalite phase obtained is sufficient. For use above the blast furnace, the pre-treatment in the sinter plant is necessary. The melting range of fayalite (about 1180 °) is too low for this and would lead to problems in processing. Therefore, the adjustment of the manganese content in the finished product is necessary. By adding a defined amount of oxygen, this ratio can be adjusted according to the customer's requirements. The oxygen can be added not only in From oxygen gas, but also in the form of intermediates serving as oxygen donors, such. B. Fe2O3 dust from the steel industry.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Revetment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014010442.7A DE102014010442A1 (en) | 2014-07-11 | 2014-07-11 | Method and device for processing iron silicate stone |
PCT/DE2015/000314 WO2016004913A1 (en) | 2014-07-11 | 2015-06-18 | Method and device for processing iron silicate rock |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3167084A1 true EP3167084A1 (en) | 2017-05-17 |
Family
ID=53835842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15749967.4A Withdrawn EP3167084A1 (en) | 2014-07-11 | 2015-06-18 | Method and device for processing iron silicate rock |
Country Status (14)
Country | Link |
---|---|
US (1) | US20170183748A1 (en) |
EP (1) | EP3167084A1 (en) |
JP (1) | JP2017528594A (en) |
KR (1) | KR20170047227A (en) |
CN (1) | CN107075606A (en) |
AU (1) | AU2015285988A1 (en) |
CA (1) | CA2954697A1 (en) |
CL (1) | CL2017000062A1 (en) |
DE (1) | DE102014010442A1 (en) |
EA (1) | EA201790172A1 (en) |
PE (1) | PE20170513A1 (en) |
PH (1) | PH12016502597A1 (en) |
WO (1) | WO2016004913A1 (en) |
ZA (1) | ZA201700109B (en) |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB652814A (en) * | 1947-05-02 | 1951-05-02 | Petri Baldur Bryk | Process for the production of iron and iron alloys |
US2986458A (en) * | 1958-09-05 | 1961-05-30 | Strategic Materials Corp | Production of iron from ferrous slag materials |
US3032411A (en) * | 1959-02-24 | 1962-05-01 | Strategic Materials Corp | Metallurgical process |
US3361557A (en) * | 1965-03-22 | 1968-01-02 | R N Corp | Processes for direct reduction of ironbearing ores, slags and the like |
US4036636A (en) * | 1975-12-22 | 1977-07-19 | Kennecott Copper Corporation | Pyrometallurgical process for smelting nickel and nickel-copper concentrates including slag treatment |
AT403294B (en) * | 1994-10-10 | 1997-12-29 | Holderbank Financ Glarus | METHOD FOR PROCESSING WASTE OR METAL OXIDE-CONTAINING WASTE COMBUSTION RESIDUES AND DEVICE FOR CARRYING OUT THIS METHOD |
AT405944B (en) * | 1996-04-19 | 1999-12-27 | Holderbank Financ Glarus | METHOD FOR REDUCING OXIDIC SLAGS |
AT406474B (en) * | 1998-03-17 | 2000-05-25 | Holderbank Financ Glarus | METHOD FOR CONVERTING SLAG FROM NON-IRON METALLURGY |
DE102006022779A1 (en) * | 2005-06-08 | 2006-12-21 | Sms Demag Ag | Method and apparatus for recovering a metal from a slag containing the metal |
AU2005338902B2 (en) * | 2005-12-09 | 2011-09-01 | Council Of Scientific And Industrial Research | A process for recovery of iron from copper slag |
JP5180438B2 (en) * | 2006-01-18 | 2013-04-10 | 新日鐵住金株式会社 | Method for producing charcoal-containing pellets |
EP2053137A1 (en) * | 2007-10-19 | 2009-04-29 | Paul Wurth S.A. | Recovery of waste containing copper and other valuable metals |
JP5308711B2 (en) * | 2008-05-16 | 2013-10-09 | 新日鐵住金株式会社 | Granulation method for sintered raw materials for iron making |
JP5326475B2 (en) * | 2008-10-07 | 2013-10-30 | 新日鐵住金株式会社 | Method for recovering chromium from chromium-containing slag |
JP5049311B2 (en) * | 2009-03-31 | 2012-10-17 | パンパシフィック・カッパー株式会社 | Method and system for dry treatment of converter slag in copper smelting |
JP2012067375A (en) * | 2010-09-27 | 2012-04-05 | Pan Pacific Copper Co Ltd | Dry processing method and system for converter slag in copper smelting |
JP2012012707A (en) * | 2011-09-22 | 2012-01-19 | Pan Pacific Copper Co Ltd | Dry-type treating method and system for converter slag in copper refining |
CN102851513A (en) * | 2012-09-14 | 2013-01-02 | 金川集团股份有限公司 | Method for recovering valuable metals from nickel-copper molten slag through selective reduction |
CN102952952B (en) * | 2012-09-26 | 2014-08-20 | 东北大学 | Method for directly restoring and recovering copper iron from smelting copper slag |
CN103060502B (en) * | 2013-01-14 | 2014-03-26 | 白银龙家丰金属渣综合利用有限公司 | Process for one-time reduction melting of ferric silicate by using waste copper residue |
-
2014
- 2014-07-11 DE DE102014010442.7A patent/DE102014010442A1/en not_active Withdrawn
-
2015
- 2015-06-18 US US15/325,281 patent/US20170183748A1/en not_active Abandoned
- 2015-06-18 CA CA2954697A patent/CA2954697A1/en not_active Abandoned
- 2015-06-18 AU AU2015285988A patent/AU2015285988A1/en not_active Abandoned
- 2015-06-18 JP JP2017501384A patent/JP2017528594A/en active Pending
- 2015-06-18 WO PCT/DE2015/000314 patent/WO2016004913A1/en active Application Filing
- 2015-06-18 EA EA201790172A patent/EA201790172A1/en unknown
- 2015-06-18 CN CN201580037641.7A patent/CN107075606A/en active Pending
- 2015-06-18 KR KR1020177003683A patent/KR20170047227A/en unknown
- 2015-06-18 EP EP15749967.4A patent/EP3167084A1/en not_active Withdrawn
- 2015-06-18 PE PE2017000039A patent/PE20170513A1/en unknown
-
2016
- 2016-12-23 PH PH12016502597A patent/PH12016502597A1/en unknown
-
2017
- 2017-01-05 ZA ZA2017/00109A patent/ZA201700109B/en unknown
- 2017-01-10 CL CL2017000062A patent/CL2017000062A1/en unknown
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016004913A1 * |
Also Published As
Publication number | Publication date |
---|---|
CL2017000062A1 (en) | 2017-08-11 |
ZA201700109B (en) | 2018-04-25 |
CN107075606A (en) | 2017-08-18 |
CA2954697A1 (en) | 2016-01-14 |
AU2015285988A1 (en) | 2017-02-02 |
WO2016004913A8 (en) | 2018-02-15 |
PE20170513A1 (en) | 2017-05-06 |
EA201790172A1 (en) | 2017-05-31 |
JP2017528594A (en) | 2017-09-28 |
DE102014010442A1 (en) | 2016-01-14 |
KR20170047227A (en) | 2017-05-04 |
US20170183748A1 (en) | 2017-06-29 |
PH12016502597A1 (en) | 2017-04-24 |
WO2016004913A1 (en) | 2016-01-14 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Extension state: BA ME |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KLAFFENBACH, ERIC Inventor name: SCHMIDL, JUERGEN |
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17Q | First examination report despatched |
Effective date: 20180226 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KLAFFENBACH, ERIC Inventor name: SCHMIDL, JUERGEN |
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18D | Application deemed to be withdrawn |
Effective date: 20190716 |