DE3934611A1 - Solid residue obtd. by heating communal mud - is made into cement by grinding with cement clinker - Google Patents
Solid residue obtd. by heating communal mud - is made into cement by grinding with cement clinkerInfo
- Publication number
- DE3934611A1 DE3934611A1 DE19893934611 DE3934611A DE3934611A1 DE 3934611 A1 DE3934611 A1 DE 3934611A1 DE 19893934611 DE19893934611 DE 19893934611 DE 3934611 A DE3934611 A DE 3934611A DE 3934611 A1 DE3934611 A1 DE 3934611A1
- Authority
- DE
- Germany
- Prior art keywords
- cement
- waste
- clinker
- cement clinker
- communal
- 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- Withdrawn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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
- C04B18/103—Burned or pyrolised sludges
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Verwer tung von bei der Verbrennung von Abfallstoffen, insbeson dere Kommunalschlamm, anfallenden festen Reststoffen.The invention relates to a method for recycling processing of waste materials, in particular municipal sludge, resulting solid residues.
Aus der deutschen Offenlegungsschrift 37 29 210 ist ein Verfahren zur thermischen Entsorgung von Abfallstoffen wie z. B. Klärschlamm, Sondermüll oder dergleichen bekannt, wobei die trockenen oder bereits getrockneten Abfallstoffe in einem Zyklon bei hohen Temperaturen unter Bildung einer schadstoffarmen, schmelzflüssigen Schlacke verbrannt wer den. Die Verbrennung der Abfallstoffe im Zyklon erfolgt bei Temperaturen, die über 1500°C liegen, wodurch alle für die Umwelt schädlichen, organischen Verbindungen zer stört werden. In einem dem Zyklon nachgeschalteten Ofen erfolgt die Trennung der heißen Abgase von der schmelz flüssigen Schlacke, die nach ihrer Verfestigung deponiert wird, während die im Zyklonabgas vorhandenen Wert- und Schadstoffe in aufeinanderfolgenden Kühlstufen aus dem Abgas abgeschieden und vom Abgas getrennt werden.From the German patent application 37 29 210 is a Processes for the thermal disposal of waste materials such as e.g. B. sewage sludge, hazardous waste or the like known, taking the dry or already dried waste in a cyclone at high temperatures to form a low-pollutant, molten slag the. The waste materials are burned in the cyclone at temperatures above 1500 ° C, which means that all organic compounds that are harmful to the environment be disturbed. In an oven downstream of the cyclone the hot exhaust gases are separated from the melt liquid slag that is deposited after it solidifies is, while the existing in the cyclone exhaust and Pollutants in successive cooling stages from the Exhaust gas separated and separated from the exhaust gas.
Ausgehend von diesem bekannten Verfahren besteht die Auf gabe der Erfindung in einer weitergehenden, besonders wirtschaftlichen Verwertung der bei der Verbrennung von Abfallstoffen, insbesondere Kommunalschlamm, anfallenden festen Reststoffe.Based on this known method, there is the surrender of the invention in a further, particularly economic recovery of the incineration of Waste materials, especially municipal sludge, accruing solid residues.
Diese Aufgabe wird dadurch gelöst, daß die festen Rest stoffe zusammen mit Zementklinker zu Fertigzement ver mahlen werden. Überraschenderweise hat es sich herausge stellt, daß beim Verbrennen von Abfallstoffen, insbesonde re beim Verbrennen von Kommunalklärschlamm, im Verbren nungsreaktor wie insbesondere im Schmelzzyklon schlacken förmige Reststoffe anfallen, die in Verbindung mit Zement - insbesondere Portland-Zement - als hydraulisches Binde mittel besonders geeignet sind. Diese festen Reststoffe können daher sehr vorteilhaft ohne jegliche Nachbehandlung direkt dem Zementklinker zugemischt und mit diesem zu Fer tigzement vermahlen werden. Auf diese Weise wird eine besonders wirtschaftliche Verwertung dieser bei der Ver brennung von Abfallstoffen anfallenden festen Reststoffe, seien es Aschen und/oder verfestigte Schlacken, gewähr leistet.This object is achieved in that the solid rest materials together with cement clinker to make finished cement be ground. Surprisingly, it turned out represents that when burning waste materials, in particular re when burning municipal sewage sludge, in burning Slag reactor such as in particular in the melting cyclone Shaped residues arise in connection with cement - especially Portland cement - as a hydraulic binding medium are particularly suitable. These solid residues can therefore be very beneficial without any after-treatment directly mixed with the cement clinker and with it to fer tigzement be ground. In this way, one particularly economic exploitation of this at the Ver burning of solid residues, be it ashes and / or solidified slags accomplishes.
Führt die Verbrennung der Abfallstoffe zur Schmelzung mit Schlackebildung, so wird die anfallende Schlacke vor der Vermahlung mit dem Zementklinker einer raschen Abkühlung unterworfen. Durch die rasche Abkühlung der geschmolzenen Reststoffe - beispielsweise in einem Wasserbad - werden die Reststoffe in eine feinkörnige Granulatform überführt, die eine praktisch 100% glasige Struktur auf-weist, die in dieser feinkörnigen Form ohne vorherige Zerkleinerung sehr leicht dem Zementklinker zugemischt und mit ihm zu Fertigzement vermahlen werden kann, wodurch insgesamt Zerkleinerungsenergie gespart wird.Carries the combustion of waste materials for melting Slag formation, so the resulting slag before the Grinding with cement clinker for rapid cooling subject. By the rapid cooling of the melted Residues - for example in a water bath the residues are converted into a fine-granular form, which has a practically 100% glassy structure, which in this fine-grained form without prior crushing very easily mixed with the cement clinker and with it Finished cement can be ground, making it total Shredding energy is saved.
Damit die an den Fertigzement gestellte Druckfestigkeit gewährleistet wird, ist es - wie die Praxis gezeigt hat - zweckmäßig, ein Mischverhältnis zwischen den Reststoffen und dem Zementklinker zu wählen, das etwa 30 : 70 Gew.-% be trägt.So that the compressive strength placed on the finished cement is guaranteed, as practice has shown, expedient, a mixing ratio between the residues and choose the cement clinker that be about 30: 70 wt .-% wearing.
Um die Eigenschaften des Fertigzementes hinsichtlich der im Verwendungsfall erforderlichen Druckfestigkeit zu er reichen bzw. nicht zu beeinträchtigen, können gegebenen falls auch sehr vorteilhaft den Abfallstoffen vor der Ver brennung und/oder bei der Verbrennung/Schmelzung als Additive Kalziumoxid oder kalziumhaltige Stoffe zugegeben werden. Durch die Zugabe von derartigen Additiven vor der Verbrennung/Schmelzung und/oder bei der Verbrennung der Abfallstoffe können die dabei als Schlacke anfallenden festen Reststoffe in einfacher Weise optimal an den Fer tigzement angepaßt werden.To the properties of the finished cement with regard to required compressive strength in use are sufficient or not to impair, given if very advantageous the waste before Ver burning and / or when burning / melting as Additive calcium oxide or calcium-containing substances added will. By adding such additives before Combustion / melting and / or when burning the Waste can be generated as slag solid residues in a simple way optimal to the Fer tigzement be adjusted.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893934611 DE3934611A1 (en) | 1989-10-17 | 1989-10-17 | Solid residue obtd. by heating communal mud - is made into cement by grinding with cement clinker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893934611 DE3934611A1 (en) | 1989-10-17 | 1989-10-17 | Solid residue obtd. by heating communal mud - is made into cement by grinding with cement clinker |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3934611A1 true DE3934611A1 (en) | 1991-04-18 |
Family
ID=6391638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19893934611 Withdrawn DE3934611A1 (en) | 1989-10-17 | 1989-10-17 | Solid residue obtd. by heating communal mud - is made into cement by grinding with cement clinker |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3934611A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0572769A2 (en) * | 1992-05-12 | 1993-12-08 | Holderbank Financiere Glarus Ag | Process for the conversion of waste incineration residues to a non-polluting product and useful for constructional purposes |
WO2002070423A1 (en) * | 2001-02-06 | 2002-09-12 | Tribovent Verfahrensentwicklung Gmbh | Method of producing an additive for mixed cements and device for carrying out said method |
-
1989
- 1989-10-17 DE DE19893934611 patent/DE3934611A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0572769A2 (en) * | 1992-05-12 | 1993-12-08 | Holderbank Financiere Glarus Ag | Process for the conversion of waste incineration residues to a non-polluting product and useful for constructional purposes |
US5405429A (en) * | 1992-05-12 | 1995-04-11 | Holderbank Financiere Glarus, Ag | Method for treatment and conversion of refuse incineration residues into environmentally acceptable and reusable material, especially for construction purposes |
EP0572769A3 (en) * | 1992-05-12 | 1995-07-05 | Holderbank Financ Glarus | Process for the conversion of waste incineration residues to a non-polluting product and useful for constructional purposes. |
WO2002070423A1 (en) * | 2001-02-06 | 2002-09-12 | Tribovent Verfahrensentwicklung Gmbh | Method of producing an additive for mixed cements and device for carrying out said method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |