WO1993002984A1 - Verwendung einer misch-, granulier- und trocknungsvorrichtung - Google Patents
Verwendung einer misch-, granulier- und trocknungsvorrichtung Download PDFInfo
- Publication number
- WO1993002984A1 WO1993002984A1 PCT/EP1992/001659 EP9201659W WO9302984A1 WO 1993002984 A1 WO1993002984 A1 WO 1993002984A1 EP 9201659 W EP9201659 W EP 9201659W WO 9302984 A1 WO9302984 A1 WO 9302984A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- use according
- container
- mixing
- shaft
- gypsum
- Prior art date
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
- 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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83612—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S241/00—Solid material comminution or disintegration
- Y10S241/38—Solid waste disposal
Definitions
- the invention relates to a new use of a mixing, pelletizing and drying device, consisting essentially of a horizontal cylindrical container with a filling shaft and outlet opening, a drivable shaft mounted therein, ploughshare-like mixing tools, which have radial arms on the shaft are fastened and extend close to the container wall, and attached to the container wall, cutter heads rotatable and drivable about radial axes, which are adapted to the envelope surface covered by the mixing tools.
- the device is intended for treating pulverulent, fibrous, pasty or pulpy material and for drying the granules obtained.
- Two different designs are given for the cutter heads.
- several straight-line knives of different lengths are fastened on a shaft in several levels one above the other.
- the knives are bent up at the ends.
- the interaction of the ploughshare-like mixing tools and the cutter heads is intended to cause the material to be pressed in order to form granules which are further compacted by mechanical influence by means of subsequent tools.
- the present invention is based on a problem which has no points of contact with the intended use of the known device specified in the mentioned patent specification.
- the plates have first been roughly shredded.
- the pre-shredded material is a mixture of gypsum chunks and cardboard scraps the size of a hand, to which gypsum residues adhere firmly.
- the paper content is 4.5 to 5%, for panels with a basis weight of about 11 kg / m 2 3.4 to 3.8%.
- a separation of paper and gypsum that meets the requirements of practice - for example by sifting - has so far not been successful in production technology.
- the roughly shredded material cannot be processed in conventional calciners.
- the cardboard scraps would float on the gypsum granule bed, for example, in an indirectly heated rotary tube coiculator and form balls that are not reliably discharged and can therefore clog the calciner. There is also a risk that dry paper will remain in the calciner when the calciner is emptied and cause an explosion when restarted.
- the coarsely pre-shredded material has also been fed to a mill together with fresh natural gypsum.
- the chunks of natural plaster up to around 30 mm in size, cause a certain, but not always sufficient, further shredding of the cardboard scraps. If fine-grained flue gas gypsum or chemical gypsum is used as the raw material, satisfactory further comminution is not possible. The method has therefore not been able to establish itself in practice.
- the known device specified at the outset is used for processing the roughly pre-comminuted reject material obtained in the production of plasterboard.
- Tests with representative material samples showed that after a mean residence time of 3 minutes the paper components were largely destroyed and mixed with the gypsum so homogeneously that use in Calciner is easily possible. After an average dwell time of 6 minutes, grain spectra were obtained using the airflow screening method, in which 90% of the material had a grain size of less than 1 mm in a sample. Grain sizes over 5 mm did not occur here.
- the mean residence time in the device to be used according to the invention is kept very short and then an additional homogenization is carried out in a further mixer.
- the fine size reduction and the mixing of the individual components takes place in two separate systems.
- the moisture content of the feed material is preferably limited to a maximum of 10%. This can e.g. by mixing dry and wet scrap material or by adding dry raw gypsum.
- the possibility is preferably provided to dry the material indirectly or directly during the treatment.
- the starting material is too dry, it may be advantageous to inject additional water.
- the processed material is admixed with the raw gypsum in an amount of at most about 20% before the calcination.
- Higher admixtures can lead to disturbances in the setting behavior due to the additives that may be contained in the processed material, such as setting accelerators or setting retarders, adhesives and paper contents.
- a mixing ratio of 10 parts of processed material to 90 parts of raw gypsum should not be exceeded.
- the total mixture which is fed to the calcination contains a paper proportion of approximately 0.4 to 0.5%. This proportion has no negative influence on the calcination, the subsequent process stages and the quality of the end products.
- the rough comminution of the reject plates takes place in the area of the filling shaft, which for this purpose is e.g. is funnel-shaped and equipped with spiked rollers.
- the device can be operated continuously, quasi-continuously or even discontinuously.
- the drawing shows, in a highly simplified manner, a preferred embodiment of the device to be used according to the invention.
- Figure 1 shows schematically a longitudinal section.
- FIG. 2 shows a cross section in the left half and a view in the right half, seen from the dropout side.
- Figure 3 illustrates the adaptation of the cutter head to the mixing tool.
- FIG. 4 shows a plan view of a cutter head from the direction according to arrow A in FIG. 2.
- a lying cylindrical container 1 has a filling shaft 2 and an outlet opening 3 with a height-adjustable slide 4.
- the container wall can be designed over the entire length or also over part of the length as a double jacket for supplying a heating medium.
- the device can also have connections (not shown in the drawing) for supply air and exhaust air and nozzles for spraying water.
- a shaft 5 is axially supported in the container 1 and can be driven by a motor 6. At regular intervals on the shaft 5 there are several radial arms 7, on which ploughshare-like mixing tools 8 are fastened, which extend close to the container wall.
- cutter heads 9 are attached to the container wall, which can be rotated about radial axes and driven by a drive 10. As indicated in FIG. 1, the cutter heads 9 are arranged in at least one row parallel to the axis, preferably in two rows, specifically in the lower half of the container 1.
- the aforementioned ploughshare-like shape of the mixing tools 8 is only indicated in FIG. 1 and FIG. 2, but can be clearly seen from FIG. 3.
- Each cutter head 9 consists of a drive shaft 11 and a plurality of flat cutters 12, which - alternately at right angles and one above the other - are fastened centrally on the drive shaft 11.
- the length of the knives 12 increases with the distance from the inner wall of the container, so that the tips of the knives 12 lie on a curve 13 which is adapted to the side flank of the mixing tools 8 and thus the envelope surface covered by these tools.
- the speed of the shaft 5 is selected during operation so that the material to be processed is both finely comminuted and mixed in the mechanically generated fluidized bed. As a rule, this takes place in a Froude number range between 1 and 7.
- the Froude number Fr (n / n c ) 2 , where n is the speed of the shaft 5 and n c is the critical speed.
- the cutter heads 9 rotate at a speed between 1000 and 5000 revolutions per minute, for example 1500 or 3000 revolutions per minute.
- the required average dwell time is specified by the setting of slide 4.
- the device shown in the drawing is a continuously operated machine with tools that finely chop and homogeneously mix the material in the container in a short time.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Glanulating (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Processing Of Solid Wastes (AREA)
- Crushing And Pulverization Processes (AREA)
- Drying Of Solid Materials (AREA)
- Medicines Containing Plant Substances (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/178,314 US5413284A (en) | 1991-07-27 | 1992-07-21 | Method of and apparatus for treating plasterboard-production scrap |
DE59202260T DE59202260D1 (de) | 1991-07-27 | 1992-07-21 | Verwendung einer misch-, granulier- und trocknungsvorrichtung. |
EP19920916054 EP0597912B1 (de) | 1991-07-27 | 1992-07-21 | Verwendung einer misch-, granulier- und trocknungsvorrichtung |
FI940384A FI940384A0 (fi) | 1991-07-27 | 1994-01-26 | Sekoitus-, rakeistus- ja kuivauslaitteen käyttö |
NO940284A NO940284D0 (no) | 1991-07-27 | 1994-01-27 | Anvendelse av en blandings-, granuler-og toerkningsanordning |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914124984 DE4124984C2 (de) | 1991-07-27 | 1991-07-27 | Verwendung einer Misch-, Granulier- und Trocknungsvorrichtung |
DEP4124984.4 | 1991-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993002984A1 true WO1993002984A1 (de) | 1993-02-18 |
Family
ID=6437181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1992/001659 WO1993002984A1 (de) | 1991-07-27 | 1992-07-21 | Verwendung einer misch-, granulier- und trocknungsvorrichtung |
Country Status (9)
Country | Link |
---|---|
US (1) | US5413284A (de) |
EP (1) | EP0597912B1 (de) |
AT (1) | ATE122650T1 (de) |
DE (2) | DE4124984C2 (de) |
DK (1) | DK0597912T3 (de) |
ES (1) | ES2074367T3 (de) |
FI (1) | FI940384A0 (de) |
NO (1) | NO940284D0 (de) |
WO (1) | WO1993002984A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0722770A1 (de) * | 1994-11-16 | 1996-07-24 | Gebrüder Lödige Maschinenbaugesellschaft mbH | Bearbeitungselement von festen Materialien |
DE19641352C1 (de) * | 1996-10-08 | 1998-03-12 | Gfr Aufbereitung Reststoffe | Verfahren zur Herstellung von Zement |
DE19750997A1 (de) * | 1997-11-18 | 1999-05-27 | Rigips Gmbh | Putzmörtel |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4132906C2 (de) * | 1991-10-04 | 1994-09-29 | Loedige Maschbau Gmbh Geb | Verwendung einer Maschine zur Gipskartonplattenwiederaufarbeitung |
DE19600466A1 (de) * | 1996-01-09 | 1997-07-10 | Henkel Kgaa | Verfahren zur Herstellung von granularen Wasch- oder Reinigungsmitteln bzw. Komponenten hierfür |
DE19617734C1 (de) * | 1996-05-03 | 1997-10-23 | Ava Huep Gmbh U Co Kg | Verfahren und Vorrichtung zur Herstellung eines gärfähigen Gemisches aus biologischen Abfällen |
JP3136117B2 (ja) * | 1997-04-28 | 2001-02-19 | 花王株式会社 | 混合装置 |
US6295794B1 (en) | 1998-01-09 | 2001-10-02 | Universal Forest Products, Inc. | Joint compound including recycled constituents and method and system for making the same |
CN1241679C (zh) * | 2001-04-25 | 2006-02-15 | 利斯特股份公司 | 混合机径向或轴向自洁杆件 |
JP6229570B2 (ja) * | 2014-03-26 | 2017-11-15 | 新日鐵住金株式会社 | 混合機 |
US11759788B2 (en) * | 2020-06-04 | 2023-09-19 | Joseph Brifman | Grinding apparatus |
CN111921668B (zh) * | 2020-08-14 | 2021-11-09 | 河北香花畦生态农业科技有限公司 | 土壤修复剂、土壤修复剂制备工艺与制备系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH367379A (de) * | 1957-12-20 | 1963-02-15 | Loedige Wilhelm | Verfahren und Vorrichtung zum Mischen und Zerkleinern von pulverförmigen, feinkörnigen und faserigen Mischgütern |
FR2396941A1 (fr) * | 1977-07-08 | 1979-02-02 | Loedige Maschbau Gmbh Geb | Procede et dispositif de sechage et/ou de granulation continu de matiere en vrac |
EP0073864A1 (de) * | 1981-09-08 | 1983-03-16 | N.V. GYPROC BENELUX, naamloze vennootschap | Verfahren zur Wiedergewinnung von Gips aus Gipsplatten |
EP0163963A2 (de) * | 1984-05-07 | 1985-12-11 | Bison-Werke Bähre & Greten GmbH & Co. KG | Verfahren zum herstellen von gipsgebundenen Formkörpern |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US277319A (en) * | 1883-05-08 | Charles c | ||
US2943800A (en) * | 1954-11-13 | 1960-07-05 | Wultsch Ferdinand | Highly effective device for wet-separation |
FR1216609A (fr) * | 1957-12-20 | 1960-04-26 | Broyeur-malaxeur et procédé de malaxage et de broyage | |
DE2730941C2 (de) * | 1977-07-08 | 1986-08-28 | Gebrüder Lödige, Maschinenbaugesellschaft mbH, 4790 Paderborn | Vorrichtung zum Granulieren von pulverförmigem, faserigem, pastösem oder breiigem Gut und zum Trocknen der erhaltenen Granulate |
DE3037332C2 (de) * | 1980-10-02 | 1983-09-08 | Draiswerke Gmbh, 6800 Mannheim | Mischer für Schüttgut und Suspensionen, insbesondere faserige Suspensionen |
DE3515318A1 (de) * | 1985-04-27 | 1986-10-30 | Draiswerke Gmbh, 6800 Mannheim | Stiftmuehle fuer mischer |
US4801101A (en) * | 1987-08-05 | 1989-01-31 | Gruendler Crusher And Pulverizer, Co. | Wallboard cutter |
DE3728710C2 (de) * | 1987-08-28 | 1997-08-21 | Loedige Maschbau Gmbh Geb | Mischer zum Mischen von Feststoffschüttungen |
US4807817A (en) * | 1988-03-08 | 1989-02-28 | Schoewe David G | Comminuting and winding apparatus |
DE3839671A1 (de) * | 1988-11-24 | 1990-05-31 | Draiswerke Gmbh | Kontinuierlich arbeitender mischer |
US5100063A (en) * | 1990-06-19 | 1992-03-31 | West Fab, Inc. | Recovery of components of waste plasterboard |
US5183213A (en) * | 1991-07-30 | 1993-02-02 | Knez Building Materials Company | Method for recycling wallboard |
US5238195A (en) * | 1991-07-30 | 1993-08-24 | Knez Building Materials Company | Method for recycling wallboard |
-
1991
- 1991-07-27 DE DE19914124984 patent/DE4124984C2/de not_active Expired - Fee Related
-
1992
- 1992-07-21 WO PCT/EP1992/001659 patent/WO1993002984A1/de active IP Right Grant
- 1992-07-21 ES ES92916054T patent/ES2074367T3/es not_active Expired - Lifetime
- 1992-07-21 DE DE59202260T patent/DE59202260D1/de not_active Expired - Fee Related
- 1992-07-21 US US08/178,314 patent/US5413284A/en not_active Expired - Fee Related
- 1992-07-21 EP EP19920916054 patent/EP0597912B1/de not_active Expired - Lifetime
- 1992-07-21 AT AT92916054T patent/ATE122650T1/de not_active IP Right Cessation
- 1992-07-21 DK DK92916054T patent/DK0597912T3/da active
-
1994
- 1994-01-26 FI FI940384A patent/FI940384A0/fi not_active Application Discontinuation
- 1994-01-27 NO NO940284A patent/NO940284D0/no unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH367379A (de) * | 1957-12-20 | 1963-02-15 | Loedige Wilhelm | Verfahren und Vorrichtung zum Mischen und Zerkleinern von pulverförmigen, feinkörnigen und faserigen Mischgütern |
FR2396941A1 (fr) * | 1977-07-08 | 1979-02-02 | Loedige Maschbau Gmbh Geb | Procede et dispositif de sechage et/ou de granulation continu de matiere en vrac |
EP0073864A1 (de) * | 1981-09-08 | 1983-03-16 | N.V. GYPROC BENELUX, naamloze vennootschap | Verfahren zur Wiedergewinnung von Gips aus Gipsplatten |
EP0163963A2 (de) * | 1984-05-07 | 1985-12-11 | Bison-Werke Bähre & Greten GmbH & Co. KG | Verfahren zum herstellen von gipsgebundenen Formkörpern |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0722770A1 (de) * | 1994-11-16 | 1996-07-24 | Gebrüder Lödige Maschinenbaugesellschaft mbH | Bearbeitungselement von festen Materialien |
DE19641352C1 (de) * | 1996-10-08 | 1998-03-12 | Gfr Aufbereitung Reststoffe | Verfahren zur Herstellung von Zement |
DE19750997A1 (de) * | 1997-11-18 | 1999-05-27 | Rigips Gmbh | Putzmörtel |
Also Published As
Publication number | Publication date |
---|---|
ATE122650T1 (de) | 1995-06-15 |
EP0597912B1 (de) | 1995-05-17 |
NO940284L (no) | 1994-01-27 |
US5413284A (en) | 1995-05-09 |
DE59202260D1 (de) | 1995-06-22 |
DE4124984A1 (de) | 1993-02-25 |
FI940384A (fi) | 1994-01-26 |
FI940384A0 (fi) | 1994-01-26 |
DK0597912T3 (da) | 1995-09-11 |
DE4124984C2 (de) | 1995-04-27 |
ES2074367T3 (es) | 1995-09-01 |
NO940284D0 (no) | 1994-01-27 |
EP0597912A1 (de) | 1994-05-25 |
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