NO844859L - PROCEDURE FOR HEAT BRICTING OF FINE-CORN MATERIALS AND FOR FURTHER WORKING OF THE HEAT BREAKERS - Google Patents
PROCEDURE FOR HEAT BRICTING OF FINE-CORN MATERIALS AND FOR FURTHER WORKING OF THE HEAT BREAKERSInfo
- Publication number
- NO844859L NO844859L NO844859A NO844859A NO844859L NO 844859 L NO844859 L NO 844859L NO 844859 A NO844859 A NO 844859A NO 844859 A NO844859 A NO 844859A NO 844859 L NO844859 L NO 844859L
- Authority
- NO
- Norway
- Prior art keywords
- fine
- metal oxides
- briquettes
- hot
- grained
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims description 26
- 238000000034 method Methods 0.000 title claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 229910044991 metal oxide Inorganic materials 0.000 claims description 13
- 150000004706 metal oxides Chemical class 0.000 claims description 13
- 239000000969 carrier Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 6
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 238000011946 reduction process Methods 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000011109 contamination Methods 0.000 claims 1
- SRJLIULHRSZVDI-UHFFFAOYSA-N oxolead;zinc Chemical compound [Zn].[Pb]=O SRJLIULHRSZVDI-UHFFFAOYSA-N 0.000 claims 1
- 239000003921 oil Substances 0.000 description 6
- 239000000446 fuel Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000002864 coal component Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 201000005569 Gout Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 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
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
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)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Central Heating Systems (AREA)
Description
Oppfinnelsen angår en fremgangsmåte for varmbrikettering av finkornige materialer med sammenbakende fettkull som bindemiddel/og for videre bearbeidelse av de varme briketter. The invention relates to a method for hot briquetting of fine-grained materials with caking fatty coal as binder/and for further processing of the hot briquettes.
Fra ancitt-prosessen er det kjent å blande minst to finmalte kullkomponenter, hvorav den ene er en ikke sammenbakende komponent med bare et lite innhold av flyktige bestanddeler og den annen er et sammenbakende stenkull, From the ancitt process, it is known to mix at least two finely ground coal components, one of which is a non-caking component with only a small content of volatile constituents and the other is a caking coal,
idet blandingen foretas tilnærmet ved mykningstemperaturen for den sammenbakende kullkomponent, og derefter å varm-brikettere blandingen (se Stahl und Eisen 92 (1972), hefte 21, sidene 1039-1044). with the mixing being carried out approximately at the softening temperature of the caking coal component, and then to hot-briquette the mixture (see Stahl und Eisen 92 (1972), booklet 21, pages 1039-1044).
Innen jern- og stålindustrien dannes en rekke restmaterialer som består av metalloxyder som er forurenset med faste og/eller flytende carbonbærere. Within the iron and steel industry, a number of residual materials are formed which consist of metal oxides that are contaminated with solid and/or liquid carbon carriers.
Således er valseglødeskallet som dannes i valseverk, forurenset med olje, og spesielt det valseglødeskall som foreligger i form av findelte fraksjoner inneholder en høy konsentrasjon av olje. For å kunne bearbeide valse-glødeskall prosessmetallurgisk må sintring tilgripes. Da oljer og crackingprodukter av oljer forårsaker forstyrrelser i elektrofiltere, er det ikke tilrådelig å sintre valse-glødeskall uten på forhånd å ha brent bort oljen. Da det imidlertid for denne bortbrenning trenges tilsvarende an-legg som er kostbare og vedlikeholdskrevende, blir valse-glødeskall som oftest deponert, hvorved såvel oxydet som brenslet forblir uutnyttet. Disse deponerte materialer representerer et betydelig miljøproblem. Oljen vil også kunne skilles fra valseglødeskallet ved utluting med organ-iske oppløsningsmidler. Imidlertid er også denne fremgangsmåte meget omstendelig og ulønnsom. Thus, the slag formed in rolling mills is contaminated with oil, and especially the slag that exists in the form of finely divided fractions contains a high concentration of oil. In order to be able to process roll hot shell metallurgically, sintering must be resorted to. As oils and cracking products of oils cause disturbances in electrostatic precipitators, it is not advisable to sinter roller glow plugs without first burning off the oil. Since, however, similar facilities are needed for this burning away, which are expensive and require maintenance, roller slag is most often deposited, whereby both the oxide and the fuel remain unused. These deposited materials represent a significant environmental problem. The oil will also be able to be separated from the roll glow shell by leaching with organic solvents. However, this method is also very cumbersome and unprofitable.
Andre materialer som er relevante innen oppfinnelsens om-fang, er de jern-, sink- og blyoxydholdige slam og støv som dannes ved rensing av masovnsgasser og inneholder findelte faste carbonbærere. De såkalte giktslam må som regel avvannes ved anvendelse av filtere dersom det er ønsket å unngå våt-kjemiske separeringsprosesser, og filtrene vil da bli meget hurtig blokkert. Som følge av disse vanskeligheter blir disse slam likeledes som oftest deponert. Lignende Other materials that are relevant within the scope of the invention are the iron, zinc and lead oxide-containing sludge and dust that is formed during the purification of blast furnace gases and contains finely divided solid carbon carriers. The so-called gout sludge must as a rule be dewatered using filters if it is desired to avoid wet-chemical separation processes, and the filters will then very quickly become blocked. As a result of these difficulties, these sludges are also most often deposited. Similar
skjer med støv hvori sink- oq blvoxvd-happens with dust in which zinc- oq blvoxvd-
innholdet ikke er tilstrekkelig høyt til å berettige metallurgisk opparbeidelse. På denne måte går selvfølgelig brennstoffinnholdet i slam og støv som fra tid til annen kan være forholdsvis høyt, likeledes tapt. the content is not sufficiently high to justify metallurgical processing. In this way, of course, the fuel content in sludge and dust, which can be relatively high from time to time, is also lost.
De støv med høyt mangan- og carboninnhold som dannes ved ferromanganfremstilling såvel i masovner som i elektroovner, blir for tiden likeledes som regel deponert fordi disse ikke lar seg videre anvende for ferromanganfremstill-ingen på grunn av deres finkornethet. The dusts with a high manganese and carbon content that are formed during ferromanganese production both in blast furnaces and in electric furnaces are currently also deposited as a rule because these cannot be further used for ferromanganese production due to their fineness.
Lagringen av alle disse ovennevnte materialer, f.eks.The storage of all these above materials, e.g.
på deponeringssteder, fører til miljøvernproblemer som f.eks. i tilfellet med tungmetallene, som sink og bly, er ytterst alvorlige og sunnhetsskadelige. at disposal sites, leads to environmental protection problems such as in the case of the heavy metals, such as zinc and lead, are extremely serious and harmful to health.
Det tas ved oppfinnelsen sikte på å tilveiebringeThe invention aims to provide
en fremgangsmåte som gjør det mulig å gjøre de ovenfor beskrevne materialer tilgjengelige for metallurgiske proses-ser uten på forhånd å måtte brenne bort de brensler som inneholdes i disse materialer. Det tas ved oppfinnelsen dessuten sikte på å beskytte omgivelsene mot lagring av disse sunnhetsfårlige materialer. a method which makes it possible to make the materials described above available for metallurgical processes without having to burn away the fuels contained in these materials in advance. The invention also aims to protect the environment against the storage of these materials which are harmful to health.
Denne oppgave løses ifølge oppfinnelsen ved hjelp avThis task is solved according to the invention by means of
de særtrekk som er angitt i krav l's karakteriserende del. Fremgangsmåtekravene 2-9 inneholder ytterligere forholds-regler i forbindelse med den foreliggende fremgangsmåte. the distinctive features specified in claim 1's characterizing part. Procedural requirements 2-9 contain additional precautions in connection with the present method.
Ved anvendelsen ifølge oppfinnelsen av metalloxyder som er forurenset med carbonbærere, for varmbrikettering blir de flytende carbonbærere i overveiende grad forbrent og derved utnyttet som varmebærere, mens de faste carbonbærere i overveiende grad ikke blir forbrent, men brikettert. Efter varmbriketteringen har brikettene en form som gjør In the use according to the invention of metal oxides that are contaminated with carbon carriers, for hot briquetting, the liquid carbon carriers are predominantly incinerated and thereby utilized as heat carriers, while the solid carbon carriers are predominantly not incinerated, but briquetted. After hot briquetting, the briquettes have a shape that
at de kan anvendes for forskjellige pyrometallurgiske reduksjonsprosesser. De innføres f.eks. i masovner eller elektroovner i tillegg til de vanlige tilsatsmaterialer, som f.eks. koks og tilpassede malmer. I disse ovner blir metalloxydene redusert, og nærmere bestemt under utnyttelse av carboninnholdet i brikettene, innbefattende carboninnholdet fra de ifølge oppfinnelsen anvendt restmaterialer. that they can be used for various pyrometallurgical reduction processes. They are introduced e.g. in blast furnaces or electric furnaces in addition to the usual additive materials, such as coke and custom ores. In these ovens, the metal oxides are reduced, and more precisely by utilizing the carbon content in the briquettes, including the carbon content from the residual materials used according to the invention.
Overskuddet av carbon som foreligger i brikettene og ikke er nødvendig for reduksjonen av metalloxydene som foreligger i brikettene, er i tillegg disponibelt som reduksjonsmiddel og reduserer derved det koksbehov som ellers ville ha vært nødvendig. The surplus of carbon that is present in the briquettes and is not necessary for the reduction of the metal oxides present in the briquettes, is also available as a reducing agent and thereby reduces the need for coke that would otherwise have been necessary.
Alt efter typen av de restmaterialer som anvendes i henhold til patentkravene 4-6 henholdsvis de i restmateri-alene inneholdte metalloxyder, blir de varme briketter ifølge oppfinnelsen anvendt for utvinning av de tilsvarende metaller. Depending on the type of residual materials used in accordance with patent claims 4-6 and the metal oxides contained in the residual materials, the hot briquettes according to the invention are used for extraction of the corresponding metals.
Dersom de materialer som skal anvendes ifølge oppfinnelsen ikke foreligger i risledyktig tilstand, er det å anbefale på forhånd å tørke materialene og derved gjøre disse risledyktige før de innføres i flystrømreaktoren for varmbriketteringstrinnet. Materialene kan imidlertid ifølge oppfinnelsen alt efter deres fuktighetsgrad blandes med tilsvarende tørre materialer i slike mengdeforhold at denønskede grad av risledyktighet blir oppnådd. Således kan f.eks. de sterkt vannholdige slam fra masovnsgass-vaskerne blandes med tørt støv fra masovnsgasstørrense-filtrene for å oppnå den ønskede tilstand. If the materials to be used according to the invention are not available in a flowable state, it is recommended to dry the materials in advance and thereby make them flowable before they are introduced into the jet flow reactor for the hot briquetting step. However, according to the invention, depending on their degree of moisture, the materials can be mixed with corresponding dry materials in such quantity ratios that the desired degree of ripplability is achieved. Thus, e.g. the highly aqueous sludge from the blast furnace gas scrubbers is mixed with dry dust from the blast furnace gas dryer filters to achieve the desired condition.
Claims (9)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU85116A LU85116A1 (en) | 1983-12-06 | 1983-12-06 | METHOD FOR HOT BRIQUETTING FINE GRAIN MATERIALS AND FOR PROCESSING THE HOT BRIQUETTES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO844859L true NO844859L (en) | 1985-06-07 |
Family
ID=19730181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO844859A NO844859L (en) | 1983-12-06 | 1984-12-05 | PROCEDURE FOR HEAT BRICTING OF FINE-CORN MATERIALS AND FOR FURTHER WORKING OF THE HEAT BREAKERS |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE901093A (en) |
| DE (1) | DE3440037A1 (en) |
| FR (1) | FR2561257B1 (en) |
| GB (1) | GB2154223B (en) |
| LU (1) | LU85116A1 (en) |
| NO (1) | NO844859L (en) |
| ZA (1) | ZA849083B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU86070A1 (en) * | 1985-09-09 | 1987-04-02 | Laborlux Sa | METHOD FOR PROCESSING ZINC AND LEAD-CONTAINING RESIDUES FROM THE STEEL INDUSTRY WITH REGARD TO METALLURGICAL PROCESSING |
| DE3711130C1 (en) * | 1987-04-02 | 1988-07-21 | Thyssen Stahl Ag | Process and plant for the production of binderless hot briquettes |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3420656A (en) * | 1966-09-02 | 1969-01-07 | Lummus Co | Process for forming hard oxide pellets and product thereof |
| US3642465A (en) * | 1969-06-16 | 1972-02-15 | Lummus Co | Process for the production of highly prereduced oxide pellets |
| DE2335669A1 (en) * | 1973-07-13 | 1975-02-06 | Metallgesellschaft Ag | PROCESS FOR THE MANUFACTURING OF ORECAKE HOT BRIQUETTES FOR SELF-DIVIDING |
| LU70523A1 (en) * | 1974-07-12 | 1976-05-31 | ||
| LU71144A1 (en) * | 1974-10-18 | 1976-08-19 | ||
| FR2297244A1 (en) * | 1975-01-07 | 1976-08-06 | Thyssen Great Britain Ltd | Iron oxide conversion into iron - by mixing with coal dust, carbon black and resin, forming briquettes and reducing in blast furnace |
| DE3009808C2 (en) * | 1980-03-14 | 1982-02-18 | Coc-Luxembourg S.A., Luxembourg | Process for the production of raw material blanks containing silicon and carbon and the use of the raw material blanks |
-
1983
- 1983-12-06 LU LU85116A patent/LU85116A1/en unknown
-
1984
- 1984-11-02 DE DE19843440037 patent/DE3440037A1/en not_active Withdrawn
- 1984-11-16 FR FR8417520A patent/FR2561257B1/en not_active Expired
- 1984-11-20 BE BE0/214031A patent/BE901093A/en not_active IP Right Cessation
- 1984-11-21 ZA ZA849083A patent/ZA849083B/en unknown
- 1984-12-03 GB GB08430435A patent/GB2154223B/en not_active Expired
- 1984-12-05 NO NO844859A patent/NO844859L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LU85116A1 (en) | 1985-09-12 |
| ZA849083B (en) | 1985-07-31 |
| DE3440037A1 (en) | 1985-06-13 |
| GB8430435D0 (en) | 1985-01-09 |
| FR2561257A1 (en) | 1985-09-20 |
| GB2154223A (en) | 1985-09-04 |
| GB2154223B (en) | 1987-10-07 |
| BE901093A (en) | 1985-03-15 |
| FR2561257B1 (en) | 1988-11-25 |
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