EP0056880A1 - Procédé de préparation de briquettes d'addition pour four à zinc - Google Patents
Procédé de préparation de briquettes d'addition pour four à zinc Download PDFInfo
- Publication number
- EP0056880A1 EP0056880A1 EP81201243A EP81201243A EP0056880A1 EP 0056880 A1 EP0056880 A1 EP 0056880A1 EP 81201243 A EP81201243 A EP 81201243A EP 81201243 A EP81201243 A EP 81201243A EP 0056880 A1 EP0056880 A1 EP 0056880A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lead
- content
- roasted material
- zinc
- roasted
- 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.)
- Granted
Links
- 239000011701 zinc Substances 0.000 title claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 14
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000000463 material Substances 0.000 claims abstract description 18
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229910000464 lead oxide Inorganic materials 0.000 claims abstract description 5
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003245 coal Substances 0.000 claims abstract description 4
- 239000011787 zinc oxide Substances 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000470 constituent Substances 0.000 abstract description 2
- 238000002372 labelling Methods 0.000 abstract 1
- 239000004484 Briquette Substances 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000010405 reoxidation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Images
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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/02—Preliminary treatment of ores; Preliminary refining of zinc oxide
-
- 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
Definitions
- the invention relates to a method for producing a briquetted feedstock for zinc shaft furnaces, wherein roasted material containing zinc oxide is subjected to hot briquetting from a fluidized bed roasting.
- the sulfidic ore concentrates must first be roasted and made into pieces.
- Sinter roasting on a traveling grate is relatively complex, leads to exhaust gas with a relatively low SO 2 content and causes problems with regard to environmental pollution.
- the roasting in the fluidized bed largely avoids these problems, but the roasted fine-grained material has to be made into pieces in a separate process step.
- the object of the invention is to produce briquettes from the roasted material of fluidized bed roasts with as little effort as possible, which have good properties for processing in a zinc shaft furnace.
- This object is achieved according to the invention in that a metallic lead content unc or lead oxide content of at least 3%, calculated as BLei, is set in the roasted material, non-baking coal with a low content of volatile constituents is mixed with the roasted material, the ratio of Pb to C in% by weight is set to at least 1, and the mixture is triquetted at a pressing temperature of 250 to 470 ° C. under a pressing pressure of 4 to 20 t / cm roll width, measured dynamically.
- the roasted material is obtained as bed discharge, cyclone discharge and possibly discharge from other dedusting plants in a wide grain range of approximately 0 to 5 mm.
- the vast majority is in a grain size of less than 2 mm. It is very important that the individual discharges are mixed very well.
- the mixed metallic lead and / or oxidic lead generally comes from the operation of the zinc shaft furnace itself, such as. B. Traß from the pump sump of the condenser, dust from the room dust and filter sludge from the gas scrubbing.
- the substances containing the metallic lead and / or oxidic lead are also used in a grain size of about 0 to 5 mm.
- the addition of metallic lead and / or lead oxide can be up to about 15% by weight, calculated as lead.
- the non-baking coals can have a volatile content of up to about 6% by weight, such as coke breeze and anthracite. Temperatures in the upper range of the pressing temperature result in higher strength of the briquettes. This also applies to higher pressures. The pressures are measured dynamically, i.e. during the operation of the press.
- a preferred embodiment consists in that the lead content is 3 to 12%, the carbon content is 2 to 6% and the ratio of Pb to C is set to 1.5 to 2. These areas result in briquettes with particularly good properties.
- the roasted goods were each treated with briquette residues (2 to 8 mm) and, if necessary, with lead-containing returns from the zinc shaft furnace (40% Zn, 30% Pb, 100% ⁇ 3 mm) or returns plus coke breeze (2.9% volatile components, 100% ⁇ 0.5 mm) mixed hot and briquetted in a heat on a semi-technical double-roll press (diameter 500 mm, 44 m wide).
- the advantages of the invention are that the pellets have a good initial reducibility and thus a good overall reducibility in a relatively short time, have good and sufficient mechanical strength, can be produced without great effort, and the briquetting takes place without subsequent heating of the discharge material of the fluidized bed can.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19813101886 DE3101886A1 (de) | 1981-01-22 | 1981-01-22 | Verfahren zur herstellung eines brikettierten einsatzmaterials fuer zink-schachtoefen |
| DE3101886 | 1981-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0056880A1 true EP0056880A1 (fr) | 1982-08-04 |
| EP0056880B1 EP0056880B1 (fr) | 1984-06-20 |
Family
ID=6123064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81201243A Expired EP0056880B1 (fr) | 1981-01-22 | 1981-11-02 | Procédé de préparation de briquettes d'addition pour four à zinc |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4525207A (fr) |
| EP (1) | EP0056880B1 (fr) |
| JP (1) | JPS57143446A (fr) |
| DE (2) | DE3101886A1 (fr) |
| PL (1) | PL234779A1 (fr) |
| RO (1) | RO84192B (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0215210A1 (fr) * | 1985-08-14 | 1987-03-25 | Thyssen Stahl Aktiengesellschaft | Procédé et installation de fabrication à chaud de briquettes sans liant |
| US5525929A (en) * | 1993-11-24 | 1996-06-11 | Nec Corporation | Transimpedance amplifier circuit with feedback and load resistor variable circuits |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2087557C (fr) * | 1992-07-31 | 2000-04-25 | Matthew Raskin | Methode servant a enlever un catalyseur |
| JP2580799Y2 (ja) * | 1993-05-25 | 1998-09-17 | 三相電機株式会社 | 電動機およびその固定子 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1041256B (de) * | 1953-05-13 | 1958-10-16 | Nat Smelting Co Ltd | Verfahren zur Gewinnung von Blei und Zink |
| DE1247667B (de) * | 1963-09-30 | 1967-08-17 | Brevets Metallurgiques | Verfahren zum Betrieb eines Schachtofens zur Zinkgewinnung |
| GB1181874A (en) * | 1966-05-17 | 1970-02-18 | Boliden Ab | A method of Converting a Finely-Grained Material to a more Coarsely-Grained Material |
| US3523786A (en) * | 1966-07-05 | 1970-08-11 | Metallurgical Processes Ltd | Method of operating and controlling a zinc blast furnace |
| DE2034791A1 (de) * | 1969-07-14 | 1971-02-04 | Brevets Metallurgiques, S A , Freiburg (Schweiz) | Verfahren zur Zubereitung von Be schickungsmaterial fur Blasschachtofen |
| DE2335669A1 (de) * | 1973-07-13 | 1975-02-06 | Metallgesellschaft Ag | Verfahren zur herstellung von erzkoks-heissbriketts fuer die selbstgaengige verhuettung |
| US3946098A (en) * | 1972-12-11 | 1976-03-23 | Metallurgical Processes Ltd. | Preparation of feed material for a blast furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA793158B (en) * | 1978-07-04 | 1980-07-30 | Isc Smelting | Roasting of sulphide materials |
-
1981
- 1981-01-22 DE DE19813101886 patent/DE3101886A1/de not_active Withdrawn
- 1981-11-02 DE DE8181201243T patent/DE3164341D1/de not_active Expired
- 1981-11-02 EP EP81201243A patent/EP0056880B1/fr not_active Expired
-
1982
- 1982-01-14 RO RO106327A patent/RO84192B/ro unknown
- 1982-01-21 JP JP57008235A patent/JPS57143446A/ja active Pending
- 1982-01-21 PL PL23477982A patent/PL234779A1/xx unknown
-
1984
- 1984-01-13 US US06/570,481 patent/US4525207A/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1041256B (de) * | 1953-05-13 | 1958-10-16 | Nat Smelting Co Ltd | Verfahren zur Gewinnung von Blei und Zink |
| DE1247667B (de) * | 1963-09-30 | 1967-08-17 | Brevets Metallurgiques | Verfahren zum Betrieb eines Schachtofens zur Zinkgewinnung |
| GB1181874A (en) * | 1966-05-17 | 1970-02-18 | Boliden Ab | A method of Converting a Finely-Grained Material to a more Coarsely-Grained Material |
| US3523786A (en) * | 1966-07-05 | 1970-08-11 | Metallurgical Processes Ltd | Method of operating and controlling a zinc blast furnace |
| DE2034791A1 (de) * | 1969-07-14 | 1971-02-04 | Brevets Metallurgiques, S A , Freiburg (Schweiz) | Verfahren zur Zubereitung von Be schickungsmaterial fur Blasschachtofen |
| US3946098A (en) * | 1972-12-11 | 1976-03-23 | Metallurgical Processes Ltd. | Preparation of feed material for a blast furnace |
| DE2335669A1 (de) * | 1973-07-13 | 1975-02-06 | Metallgesellschaft Ag | Verfahren zur herstellung von erzkoks-heissbriketts fuer die selbstgaengige verhuettung |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0215210A1 (fr) * | 1985-08-14 | 1987-03-25 | Thyssen Stahl Aktiengesellschaft | Procédé et installation de fabrication à chaud de briquettes sans liant |
| US5525929A (en) * | 1993-11-24 | 1996-06-11 | Nec Corporation | Transimpedance amplifier circuit with feedback and load resistor variable circuits |
Also Published As
| Publication number | Publication date |
|---|---|
| US4525207A (en) | 1985-06-25 |
| RO84192A (fr) | 1984-05-23 |
| EP0056880B1 (fr) | 1984-06-20 |
| DE3164341D1 (en) | 1984-07-26 |
| DE3101886A1 (de) | 1982-08-26 |
| PL234779A1 (fr) | 1982-08-16 |
| RO84192B (ro) | 1984-07-30 |
| JPS57143446A (en) | 1982-09-04 |
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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 |
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| AK | Designated contracting states |
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| 17P | Request for examination filed |
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| ITF | It: translation for a ep patent filed | ||
| GRAA | (expected) grant |
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| REF | Corresponds to: |
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| ET | Fr: translation filed | ||
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| STAA | Information on the status of an ep patent application or granted ep patent |
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