PL424985A1 - Method for recovery of zinc and iron alloy from suspended metallurgical particulate matter - Google Patents
Method for recovery of zinc and iron alloy from suspended metallurgical particulate matterInfo
- Publication number
- PL424985A1 PL424985A1 PL424985A PL42498518A PL424985A1 PL 424985 A1 PL424985 A1 PL 424985A1 PL 424985 A PL424985 A PL 424985A PL 42498518 A PL42498518 A PL 42498518A PL 424985 A1 PL424985 A1 PL 424985A1
- Authority
- PL
- Poland
- Prior art keywords
- dust
- zinc
- iron
- metallurgical
- furnace
- Prior art date
Links
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Przedmiotem wynalazku jest sposób odzysku cynku i stopu żelaza z pyłów hutniczych w szczególności z mieszaniny pyłów stalowniczych i innych pyłów z hutnictwa żelaza i stali. Sposób odzysku cynku i stopu żelaza z pyłów hutniczych charakteryzuje się tym, że mieszaninę pyłów stalowniczych i innych pyłów z hutnictwa żelaza i stali o zawartości cynku w granicach od 2 do 40% i żelaza od 10 do 65% poddaje się procesowi granulowania z dodatkiem reduktora przy wykorzystaniu granulatora, aż do uzyskania jednorodnego materiału, przy czym ilość dodawanego reduktora mieści się w granicach od 7% do 25% masy pyłów hutniczych i zależy wprost proporcjonalnie od ilości tlenków cynku i żelaza, następnie przygotowany materiał kierowany jest do pieca elektrycznego łukowo-oporowego w zintegrowanym agregacie metalurgicznym, gdzie w procesie ciągłym lub półciągłym topi się przygotowany granulat w temperaturze w zakresie 1350 - 1600°C, w czasie którego zachodzi proces redukcji tlenków cynku i żelaza i wytrącony cynk w postaci gazowej jest odpędzany i utleniany w strumieniu powietrza, przy czym odpylanie fazy gazowej jest dwuetapowe i w pierwszej kolejności gazy przechodzą przez komorę wstępnego odpylania, gdzie odbierane są grubsze frakcje pyłów i są one zawracane do pieca elektrycznego, następnie w dalszej części układu odpylania następuje schłodzenie gazów z pieca do temperatury poniżej 200°C i skierowanie ich na filtry workowe celem wychwytu i odzysku tlenku cynku w formie drobnego pyłu, a powstały w piecu elektrycznym stop żelaza i żużel odpadowy są spuszczane z pieca, przy czym stop żelaza zawierający podwyższoną zawartość węgla jest w zintegrowanym układzie kierowany do pieca indukcyjnego lub łukowego, w którym następuje jego modyfikacja poprzez usunięcie nadmiaru węgla, siarki, fosforu oraz dodanie złomu stalowego i/lub dodatków stopowych w celu uzyskania stopów handlowych.The subject of the invention is a method for the recovery of zinc and iron alloy from metallurgical dust, in particular from a mixture of steel dust and other dust from the iron and steel industry. The method of recovering zinc and iron alloy from metallurgical dust is characterized by the fact that a mixture of steel dust and other dust from the iron and steel industry with zinc content ranging from 2 to 40% and iron from 10 to 65% is subjected to the granulation process with the addition of a reducer at using a granulator, until a homogeneous material is obtained, the amount of added reducer is within the range from 7% to 25% of the mass of metallurgical dust and depends directly proportional to the amount of zinc and iron oxides, then the prepared material is directed to the electric arc-resistance furnace in an integrated metallurgical unit, where the prepared granulate is melted in a continuous or semi-continuous process at a temperature in the range of 1350 - 1600 ° C, during which the process of zinc and iron oxides reduction takes place and the precipitated zinc gas is stripped and oxidized in the air stream, gas phase dedusting is a two-stage process and the gases pass through the coal first pre-dedusting, where coarser dust fractions are collected and returned to the electric furnace, then, in the further part of the dedusting system, the furnace gases are cooled down to a temperature below 200 ° C and directed to bag filters to capture and recover zinc oxide in the form of fine the dust, and the iron alloy and waste slag formed in the electric furnace are tapped from the furnace, while the iron alloy containing an increased carbon content is in an integrated system directed to the induction or arc furnace, where it is modified by removing excess carbon, sulfur, phosphorus and adding steel scrap and / or alloying additives to obtain commercial alloys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL424985A PL424985A1 (en) | 2018-03-21 | 2018-03-21 | Method for recovery of zinc and iron alloy from suspended metallurgical particulate matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL424985A PL424985A1 (en) | 2018-03-21 | 2018-03-21 | Method for recovery of zinc and iron alloy from suspended metallurgical particulate matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL424985A1 true PL424985A1 (en) | 2019-09-23 |
Family
ID=67979766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL424985A PL424985A1 (en) | 2018-03-21 | 2018-03-21 | Method for recovery of zinc and iron alloy from suspended metallurgical particulate matter |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL424985A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624070A (en) * | 2020-12-03 | 2021-04-09 | 钢铁研究总院 | Full utilization method of steel slag |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60251234A (en) * | 1984-05-25 | 1985-12-11 | Sumitomo Heavy Ind Ltd | Method for recovering valuable metal from iron dust containing high zinc |
| PL288418A1 (en) * | 1989-12-22 | 1991-09-23 | Elkem Technology | Method of recovering zinc from containing materials |
| PL363337A1 (en) * | 2003-11-06 | 2005-05-16 | METALCO Sp.z o.o. | Method for obtaining ferrous alloy, particularly steel and zinc-lead concentrate from metalliferous waste materials |
| KR101493965B1 (en) * | 2014-03-12 | 2015-03-02 | 이계안 | Process for recovering iron and zinc from iron and zinc-bearing waste |
| WO2017014204A1 (en) * | 2015-07-22 | 2017-01-26 | 株式会社テツゲン | Method and apparatus for recovering zinc and iron from electric furnace dust |
| CN107400782A (en) * | 2017-07-28 | 2017-11-28 | 重庆科技学院 | Its recovery method as resource of the waste material containing zinc-iron caused by Production Process for Steel Enterprise |
-
2018
- 2018-03-21 PL PL424985A patent/PL424985A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60251234A (en) * | 1984-05-25 | 1985-12-11 | Sumitomo Heavy Ind Ltd | Method for recovering valuable metal from iron dust containing high zinc |
| PL288418A1 (en) * | 1989-12-22 | 1991-09-23 | Elkem Technology | Method of recovering zinc from containing materials |
| PL363337A1 (en) * | 2003-11-06 | 2005-05-16 | METALCO Sp.z o.o. | Method for obtaining ferrous alloy, particularly steel and zinc-lead concentrate from metalliferous waste materials |
| KR101493965B1 (en) * | 2014-03-12 | 2015-03-02 | 이계안 | Process for recovering iron and zinc from iron and zinc-bearing waste |
| WO2017014204A1 (en) * | 2015-07-22 | 2017-01-26 | 株式会社テツゲン | Method and apparatus for recovering zinc and iron from electric furnace dust |
| CN107400782A (en) * | 2017-07-28 | 2017-11-28 | 重庆科技学院 | Its recovery method as resource of the waste material containing zinc-iron caused by Production Process for Steel Enterprise |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624070A (en) * | 2020-12-03 | 2021-04-09 | 钢铁研究总院 | Full utilization method of steel slag |
| CN112624070B (en) * | 2020-12-03 | 2022-03-29 | 钢铁研究总院 | Full utilization method of steel slag |
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