WO2010122362A4 - Apparatus and method for producing drest iron-ore briquette and/or pellet from steel making converter flue-dust, sludge or red mud - Google Patents
Apparatus and method for producing drest iron-ore briquette and/or pellet from steel making converter flue-dust, sludge or red mud Download PDFInfo
- Publication number
- WO2010122362A4 WO2010122362A4 PCT/HU2010/000045 HU2010000045W WO2010122362A4 WO 2010122362 A4 WO2010122362 A4 WO 2010122362A4 HU 2010000045 W HU2010000045 W HU 2010000045W WO 2010122362 A4 WO2010122362 A4 WO 2010122362A4
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casting mould
- iron
- separator
- belt
- endless
- Prior art date
Links
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 title claims abstract 15
- 239000004484 Briquette Substances 0.000 title claims abstract 11
- 239000003500 flue dust Substances 0.000 title claims abstract 9
- 239000010802 sludge Substances 0.000 title claims abstract 6
- 238000009628 steelmaking Methods 0.000 title claims abstract 4
- 238000004519 manufacturing process Methods 0.000 title claims 3
- 239000008188 pellet Substances 0.000 title 1
- 238000005266 casting Methods 0.000 claims abstract 30
- 239000000463 material Substances 0.000 claims abstract 13
- 239000000203 mixture Substances 0.000 claims abstract 8
- 239000013013 elastic material Substances 0.000 claims abstract 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract 7
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract 6
- 239000007790 solid phase Substances 0.000 claims abstract 6
- 238000000034 method Methods 0.000 claims abstract 5
- 235000011837 pasties Nutrition 0.000 claims abstract 3
- 239000000084 colloidal system Substances 0.000 claims abstract 2
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract 2
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims 5
- 239000007787 solid Substances 0.000 claims 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims 4
- 239000000292 calcium oxide Substances 0.000 claims 4
- 235000012255 calcium oxide Nutrition 0.000 claims 4
- 239000000654 additive Substances 0.000 claims 3
- 230000000996 additive effect Effects 0.000 claims 3
- 238000010438 heat treatment Methods 0.000 claims 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 2
- 235000019270 ammonium chloride Nutrition 0.000 claims 2
- 229960001040 ammonium chloride Drugs 0.000 claims 2
- 229910052593 corundum Inorganic materials 0.000 claims 2
- 238000000465 moulding Methods 0.000 claims 2
- 239000012071 phase Substances 0.000 claims 2
- 230000001131 transforming effect Effects 0.000 claims 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 2
- 229910021536 Zeolite Inorganic materials 0.000 claims 1
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 235000011116 calcium hydroxide Nutrition 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 239000004568 cement Substances 0.000 claims 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims 1
- 230000003028 elevating effect Effects 0.000 claims 1
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 235000019353 potassium silicate Nutrition 0.000 claims 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims 1
- 229910052911 sodium silicate Inorganic materials 0.000 claims 1
- 239000010457 zeolite Substances 0.000 claims 1
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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
-
- 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
-
- 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
- C22B7/02—Working-up flue dust
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Apparatus for producing drest iron-ore briquette from steel making converter flue-dust, converter sludge or red mud, comprising converter flue-dust storing container (1), reagent container (2), autoclave (4), buffer vessel arrangement (6), separator (7), dryer unit (8), buffer vessel (5), evaporator (12), water cooler (13), driving water vessel (3) and separator unit (14), characterized in that the apparatus is further provided by a mixing unit (9) with pouring slot (10) and a briquetting unit consisting of an endless casting mould belt (11) stretched between two belt drums (D1, D2), and driving means connected to at least one of the drums (D1, D2), and open casting moulds (Ha) with closed bottom and cavity walls (Hf) made of elastic material are arranged in at least one row on the endless belt (11). In one of the methods according to the invention the heavy metal (Me) content of converter flue-dust and/or converter sludge is transformed into Me-chloride and Me-ferrite or Me-salt, and its Fe-oxide content is transformed into colloid solid phase, and the latter yet containing Fe-oxide is forwarded from the separator (7) into the mixer (9) then added CaO containing material, and mixing this mixture up to get a pasty state iron-ore pulp, then this pulp is poured into the casting moulds (Ha) of the endless casting mould belt (11) stretched between two belt drums (D1, D2).
Claims
1. Apparatus for producing drest iron-ore briquette from steel making converter flue-dust, converter sludge or red mud, comprising converter flue-dust storing container (1), reagent container (2), autoclave (4), buffer vessel arrangement (6), separator (7), dryer unit (8), buffer vessel (5), evaporator (12), water cooler (13), driving water vessel (3) and separator unit (14), characterized in that the apparatus is further provided by a mixing unit (9) with pouring slot (10) and a briquetting unit consisting of an endless casting mould belt (11) stretched between two drums (Dl, D2), at least one of which is driven, and open casting moulds (Ha) with closed bottom and cavity walls (Hf) made of elastic material are arranged in at least one row on the endless casting mould belt (11), and the pouring slot (10) is provided above the endless casting mould belt (11).
2. The apparatus according to claim 1, characterized in that each bottom and cavity walls (Hf) of said casting moulds (Ha) are arranged beneath the surface of the endless casting mould belt
(11).
≠
3. The apparatus according to claim 2, characterized in that each bottom and cavity walls
(Hf) of said casting moulds (Ha) are shaped with a moulding slant (α) having a range between 0° and 10°, preferably within a range of 1° and 6°, and more preferably it is 4° in relation to the norma! of the endless casting mould belt (H).
4. The apparatus according to claim 3, characterized in that a releasing-cone (Ilk) is shaped in the casting mould (Ha), preferably in the middle thereof, starting from the bottom and protruding at most up to the surface plane of the endless casting mould belt (H).
5. The apparatus according to claim 4, characterized in that said releasing-cone (Ilk) is shaped as a truncated cone, and moulding slant (α) of its generatrices is between 0° and 10°, preferably within a range of 1° and 6°, and more preferably it is 4°.
6. The apparatus according to claim 5, characterized in that said cavity walls (Hf) of open casting mould (Ha) shaped integrally with said endless casting mould belt (11) are made of elastic material, preferably gum or silicone.
7. The apparatus according to claim 6, characterized in that said elastic casting mould (Ha) is in a compressed state while it is between the skirt of the drum (Dl, D2) and the endless casting mould belt (11).
8. The apparatus according to claim 7, characterized in that said separator (7) comprises a centrifugal separator (7) or a wash box.
9. A method for producing drest iron-ore briquette from steel making converter flue-dust and/or converter sludge as a base material (A), comprising the step of: adding the base material (A) from a storing container (1) containing converter flue- dust and/or converter sludge into an autoclave (4) having internal mixing device (K) and heating device (F), and adding water from a driving water vessel (3) and reagent into said autoclave (4) containing said base material (A), then continuously mixing said solution thus obtained in the autoclave (4) by means of the mixing device (K), while maintaining its temperature on a permanent value by means of the heating device (F), characterized in that elevating the temperature of the solution to a range between 55-85 0C and adding a reagent containing a weak acid in a range of 2 mass%-30 mass% to the base material (A) in the autoclave (4), while mixing it permanently, thus transforming the heavy metal (Me) content of the flue-dust into Me-ferrite or Me-salt in the one hand, and transforming its Fe-oxide content into solid colloid phase in the other hand, diverting the mixture into a wash box or separator (7), and separating the solid phase containing Fe-oxide and Me-chloride phase, then conveying the solid phase containing Fe-oxide into a mixing unit (9) from the separator (7), adding additive material containing CaO, and mixing this mixture into a pasty state as being iron-ore p'ulp, then pouring the latter into open casting moulds (Ha) with closed bottom and cavity walls (Hf) made of elastic material arranged in an endless casting mould belt (11) stretched between two drums (Dl, D2), evening the surface while moving steadily said endless casting mould belt (11) between the two drums (Dl, D2), and allowing the iron-ore pulp to set as solid iron-ore briquette (P), and compressing said casting moulds (Ha) made of elastic material between the casting mould belt (11) and the drum (Dl, D2), thus releasing the solid iron-ore briquette (P) from the casting mould (Ha).
10. The method according to claim 9, characterized in that said weak acid comprises acetic acid (CH3COOH).
11. A method for producing drest iron-ore briquette from red mud as a base material (A), comprising the step of: adding the base material (A) from a storing container (1) containing red mud into an autoclave (4) having internal mixing device (K) and heating device (F), and adding reagent into said autoclave (4) containing said base material (A), then continuously mixing said mixture in the autoclave (4), while maintaining its temperature on a permanent value, characterized in that adjusting the temperature of the mixture to a range between 55-85 0C and adding ammonium-chloride reagent to the base material (A) in the autoclave (4), while mixing it permanently, and reducing Fe-chloride residual thus created into Fe- oxide by means of ammonia, diverting the mixture into a wash box or a separator (7), and separating the solid phase containing Fe-oxide and residuals containing NaOH and Al2O3 of the mixture, and creating zeolite and water by adding 20-25 mass% of water glass (Na2SiO3) to the solute residuals containing NaOH and Al2O3, and then conveying the solid phase containing Fe-oxide into a mixing unit (9) from the separator (7), adding additive material containing CaO, and mixing this mixture into a pasty state as being iron-ore pulp, then pouring the latter into open casting moulds (lla) with closed bottom and cavity walls (Hf) made of elastic material arranged in an endless casting mould belt (11) stretched between two drums (Dl, D2), evening the surface while moving steadily said endless casting mould belt (11) between the two drums (Dl, D2), and allowing the iron-ore pulp to set as solid iron-ore briquette (P), and compressing said casting moulds (Ha) made of elastic material between the casting mould belt (11) and the drum (Dl, D2), thus releasing the solid iron-ore briquette (P) from the casting mould (Ha).
12. The method according to claim 11, characterized in that adding ammonium-chloride (NH4CI) in an amount of at most 15-25 mass% in relation to the mass of base material (A).
13. The method according to claim 11 or 12, characterized in that forwarding solid phase containing Fe-oxide from the separator (7) to a dryer unit (8) and then to a mixer (9).
14. The method according to any of claims H - 13, characterized in *that additive material containing CaO comprises hydrated lime and/or burnt lime and/or cement.
15. Iron-ore briquette (P) produced according to any claims of 1 - 14, characterized in that the Fe content of the briquette (P) is at least 50 mass%.
21
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUP0900246 | 2009-04-21 | ||
| HU0900246A HU228102B1 (en) | 2009-04-21 | 2009-04-21 | Apparatus and method for producting iron-ore briquette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2010122362A1 WO2010122362A1 (en) | 2010-10-28 |
| WO2010122362A4 true WO2010122362A4 (en) | 2010-12-16 |
Family
ID=89988920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/HU2010/000045 WO2010122362A1 (en) | 2009-04-21 | 2010-04-20 | Apparatus and method for producing drest iron-ore briquette and/or pellet from steel making converter flue-dust, sludge or red mud |
Country Status (2)
| Country | Link |
|---|---|
| HU (1) | HU228102B1 (en) |
| WO (1) | WO2010122362A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305805B (en) * | 2011-07-29 | 2012-12-19 | 中南大学 | Method for detecting moisture distribution at material layer in chain grate machine in pelletizing production process |
| CN104726697B (en) * | 2014-11-28 | 2017-02-22 | 攀枝花钢城集团有限公司 | Method for monitoring moisture of green pellets in chain grate on line |
| CN104630462B (en) * | 2015-02-28 | 2017-05-03 | 北京辰兴旭光环保技术有限公司 | Steelmaking sludge drying ball pressing system and ball pressing method |
| IT201700104599A1 (en) | 2017-09-19 | 2019-03-19 | Slb S R L | Conveyor belt for a continuous food oven and continuous food oven comprising said conveyor belt |
| GB2578645B (en) * | 2018-11-02 | 2021-11-24 | Darlow Lloyd & Sons Ltd | Method and apparatus for treating waste material |
| CN109589780B (en) * | 2019-01-03 | 2021-08-31 | 广东电网有限责任公司广州供电局 | Hydrogen fluoride gas adsorbent and preparation method thereof |
| CN112575182A (en) * | 2020-11-24 | 2021-03-30 | 东北大学 | Carbon-containing red mud pellets and preparation method thereof |
| CN112441815B (en) * | 2020-12-04 | 2022-08-30 | 太原科技大学 | Method for preparing microwave absorbing material by utilizing red mud and coal gangue and application thereof |
| CN113444879A (en) * | 2021-06-28 | 2021-09-28 | 徐长飞 | Sludge ball pressing system and process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU174231B (en) * | 1972-03-24 | 1979-11-28 | Tatabanyai Szenbanyak | Process for the reduction of the sodium content of red mud |
| US4529446A (en) * | 1982-04-26 | 1985-07-16 | Nicholas Valenti | Formed metal-containing briquettes, process for forming the same and process for utilizing the same in the manufacture of steel |
| US4572771A (en) * | 1985-01-31 | 1986-02-25 | Amax Inc. | Zinc recovery from steel plant dusts and other zinciferous materials |
| RU1806211C (en) * | 1991-01-23 | 1993-03-30 | Институт Металлургии Им.А.А.Байкова | Method for production of briquette of continuous length |
| US5942198A (en) * | 1992-01-15 | 1999-08-24 | Metals Recycling Technologies Corp. | Beneficiation of furnace dust for the recovery of chemical and metal values |
| US6874411B2 (en) * | 2000-04-28 | 2005-04-05 | Ntn Corporation | Recycle of grinding sludge |
-
2009
- 2009-04-21 HU HU0900246A patent/HU228102B1/en not_active IP Right Cessation
-
2010
- 2010-04-20 WO PCT/HU2010/000045 patent/WO2010122362A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| HUP0900246A2 (en) | 2010-12-28 |
| WO2010122362A1 (en) | 2010-10-28 |
| HU228102B1 (en) | 2012-10-29 |
| HU0900246D0 (en) | 2009-06-29 |
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