DE3828414A1 - METHOD FOR PROCESSING FLIGHT BAGS - Google Patents
METHOD FOR PROCESSING FLIGHT BAGSInfo
- Publication number
- DE3828414A1 DE3828414A1 DE19883828414 DE3828414A DE3828414A1 DE 3828414 A1 DE3828414 A1 DE 3828414A1 DE 19883828414 DE19883828414 DE 19883828414 DE 3828414 A DE3828414 A DE 3828414A DE 3828414 A1 DE3828414 A1 DE 3828414A1
- Authority
- DE
- Germany
- Prior art keywords
- fly ash
- cenospheres
- flotation
- separation
- carbon particles
- 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- Withdrawn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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
Description
Es ist bekannt, daß sich in der Flugasche Wertstoffe be finden, die für verschiedene Zwecke weiterverwertet wer den können. Z. B. ist in dem deutschen Patent 36 41 940 ein Verfahren zur Aufbereitung von Flugasche beschrieben, bei dem die Flugasche durch Flotation aufbereitet wird, um die in der Flugasche enthaltenen Kohlenstoffpartikel abzutrennen. Die Verweilzeit der Flugasche in den Flota tionszellen ist dabei so kurz gewählt, daß die puzzola nischen Eigenschaften der Flugasche dadurch nicht beein trächtigt werden. An die Flotation schließt sich eine Entwässerung und Trocknung des Sinkgutes an.It is known that there are valuable substances in the fly ash find who is used for different purposes that can. For example, in German Patent 36 41 940 described a method for processing fly ash, in which the fly ash is processed by flotation, around the carbon particles contained in the fly ash cut off. The dwell time of the fly ash in the flota tion cells is chosen so short that the puzzola African properties of the fly ash are not affected to be pregnant. One follows the flotation Drainage and drying of the sink material.
Ein solches Verfahren ist insbesondere dann angebracht, wenn die Flugasche in der Zementindustrie eingesetzt werden soll.Such a method is particularly appropriate if when the fly ash is used in the cement industry shall be.
In der Flugasche können aber unter Umständen höherwertige Wertstoffe in Form sogenannter Cenosphären enthalten sein, die für andere Zwecke als für die Zementherstellung verwendet werden können, z. B. als Füllstoffe für Kunst stoffe, Speziallacke und dergleichen. Der Anteil dieser Cenosphären hängt im wesentlichen von der Betriebsweise des jeweiligen Kessels, von der Art der verfeuerten Kohle und anderen Faktoren ab. In the fly ash, however, may be of higher quality Contain valuable materials in the form of so-called cenospheres be used for purposes other than cement production can be used e.g. B. as fillers for art fabrics, special coatings and the like. The share of this Cenospheres essentially depend on the mode of operation of the respective boiler, on the type of coal burned and other factors.
Der Erfindung liegt die Aufgabe zugrunde, diese Cenosphä ren für sich als Wertstoff zu gewinnen. Diese Aufgabe wird dadurch gelöst, daß vor der Flotation der Kohlen stoffpartikel die in der Flugasche enthaltenen Cenosphä ren durch nasse oder trockene Trennverfahren von den restlichen Bestandteilen der Flugasche getrennt und durch Klassieren nach der Korngröße und/oder -form aufbereitet werden.The invention has for its object this Cenosphä win for themselves as a resource. This task is solved in that before the flotation of the coals particles the cenosphere contained in the fly ash through wet or dry separation processes from the remaining components of the fly ash separated and by Sorted according to grain size and / or shape will.
Der Erfindung liegt die Erkenntnis zugrunde, daß bei einer flotativen Aufbereitung der Flugasche zur Abtren nung der Kohlenstoffbestandteile Reagenzien zugegeben werden müssen, die die wertvollen Eigenschaften der Cenosphären negativ beeinträchtigen. Daher werden nach dem Vorschlag gemäß der Erfindung zunächst die cenosphä rischen Bestandteile abgetrennt, bevor die weitere Auf bereitung der Flugasche durch Flotation zum Zwecke der Abtrennung der kohlenstoffhaltigen Bestandteile erfolgt. Dabei können auch bei der Abtrennung der Cenosphären Flotationsverfahren eingesetzt werden, insbesondere die pneumatische Flotation, bei der keine Rührwerke einge setzt werden, sondern das Aufschwimmen mit Hilfe von kleinen Luftbläschen erfolgt, die in sogenannten Bega sungsreaktoren erzeugt werden. Jedoch sollen hierbei Reagenzien zugesetzt werden, die die Schaumbildung er leichtern, aber die wertvollen Eigenschaften der Cenos phären nicht beeinträchtigen.The invention is based on the finding that a flotative treatment of fly ash for removal Reagents added to the carbon components need to be the valuable properties of Negatively affect the cenospheres. Therefore, after the proposal according to the invention first the cenosphere components separated before further on preparation of fly ash by flotation for the purpose of Separation of the carbonaceous components takes place. It can also be used to separate the cenospheres Flotation processes are used, especially the pneumatic flotation, with no agitators turned on be set, but the floating with the help of small air bubbles that occur in so-called Bega solution reactors are generated. However, this should Reagents are added to prevent foaming lighter, but the valuable properties of the Cenos not affect the spheres.
Die Cenosphären können aber auch mit Hilfe trockener Trennverfahren von der übrigen Flugasche getrennt wer den, z. B. durch Windsichtung, wobei die Cenosphären als feine und leichte Fraktion anfallen.The cenospheres can also be drier with the help Separation process separated from the rest of fly ash the, e.g. B. by wind sifting, the cenospheres as fine and light fraction arise.
Claims (3)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883828414 DE3828414A1 (en) | 1988-08-20 | 1988-08-20 | METHOD FOR PROCESSING FLIGHT BAGS |
EP89113034A EP0355386A3 (en) | 1988-08-20 | 1989-07-15 | Fly ash beneficiation process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883828414 DE3828414A1 (en) | 1988-08-20 | 1988-08-20 | METHOD FOR PROCESSING FLIGHT BAGS |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3828414A1 true DE3828414A1 (en) | 1990-02-22 |
Family
ID=6361313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883828414 Withdrawn DE3828414A1 (en) | 1988-08-20 | 1988-08-20 | METHOD FOR PROCESSING FLIGHT BAGS |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0355386A3 (en) |
DE (1) | DE3828414A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2495749B (en) * | 2011-10-20 | 2015-11-04 | Rocktron Mineral Services Ltd | Beneficiation of fly ash |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3782985A (en) * | 1971-11-26 | 1974-01-01 | Cadcom Inc | Lightweight,high strength concrete and method for manufacturing the same |
DE3527179C1 (en) * | 1985-07-30 | 1986-12-18 | Thomas 4400 Münster Holzapfel | Process for dry separation of bituminous coal fly dusts and device for carrying out the process |
US4652433A (en) * | 1986-01-29 | 1987-03-24 | Florida Progress Corporation | Method for the recovery of minerals and production of by-products from coal ash |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4115256A (en) * | 1974-06-17 | 1978-09-19 | Zeeuw Hotze Jan De | Apparatus and method for particle separation and grading |
US4121945A (en) * | 1976-04-16 | 1978-10-24 | Amax Resource Recovery Systems, Inc. | Fly ash benificiation process |
GB2122910A (en) * | 1982-06-26 | 1984-01-25 | Pozament Cement Limited | Extraction of floatage |
US4686031A (en) * | 1985-12-27 | 1987-08-11 | Internorth, Inc. | Beneficiation of gallium in fly ash |
-
1988
- 1988-08-20 DE DE19883828414 patent/DE3828414A1/en not_active Withdrawn
-
1989
- 1989-07-15 EP EP89113034A patent/EP0355386A3/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3782985A (en) * | 1971-11-26 | 1974-01-01 | Cadcom Inc | Lightweight,high strength concrete and method for manufacturing the same |
DE3527179C1 (en) * | 1985-07-30 | 1986-12-18 | Thomas 4400 Münster Holzapfel | Process for dry separation of bituminous coal fly dusts and device for carrying out the process |
US4652433A (en) * | 1986-01-29 | 1987-03-24 | Florida Progress Corporation | Method for the recovery of minerals and production of by-products from coal ash |
Also Published As
Publication number | Publication date |
---|---|
EP0355386A2 (en) | 1990-02-28 |
EP0355386A3 (en) | 1990-05-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8125 | Change of the main classification |
Ipc: B03B 9/04 |
|
8127 | New person/name/address of the applicant |
Owner name: KLOECKNER-HUMBOLDT-DEUTZ AG, 51063 KOELN, DE |
|
8139 | Disposal/non-payment of the annual fee |