EP0203856A1 - Verfahren und Vorrichtung zum Herstellen von bitumenumhüllten Stoffen mit einer grossen Menge von Füller enthaltenden Aggregaten - Google Patents

Verfahren und Vorrichtung zum Herstellen von bitumenumhüllten Stoffen mit einer grossen Menge von Füller enthaltenden Aggregaten Download PDF

Info

Publication number
EP0203856A1
EP0203856A1 EP86401067A EP86401067A EP0203856A1 EP 0203856 A1 EP0203856 A1 EP 0203856A1 EP 86401067 A EP86401067 A EP 86401067A EP 86401067 A EP86401067 A EP 86401067A EP 0203856 A1 EP0203856 A1 EP 0203856A1
Authority
EP
European Patent Office
Prior art keywords
drum
aggregates
zone
fines
lifting
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Withdrawn
Application number
EP86401067A
Other languages
English (en)
French (fr)
Inventor
Guy Marconnet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ERMONT SA
Original Assignee
ERMONT SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ERMONT SA filed Critical ERMONT SA
Publication of EP0203856A1 publication Critical patent/EP0203856A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • E01C19/1027—Mixing in a rotary receptacle
    • E01C19/1031—Mixing in a rotary receptacle the mixture being discharged continuously
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
    • E01C19/1027—Mixing in a rotary receptacle
    • E01C19/1036—Mixing in a rotary receptacle for in-plant recycling or for reprocessing, e.g. adapted to receive and reprocess an addition of salvaged material, adapted to reheat and remix cooled-down batches
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1068—Supplying or proportioning the ingredients
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
    • E01C2019/1081—Details not otherwise provided for
    • E01C2019/1095—Mixing containers having a parallel flow drum, i.e. the flow of material is parallel to the gas flow

Definitions

  • the invention relates to a method and a device for manufacturing bituminous coated products in a mixing dryer drum, from aggregates containing an amount of fines in excess of the amount required in the coated materials.
  • the aggregates are introduced continuously by one end of the drum through which the flame of a burner penetrates, so that the drum is traversed by the aggregates and hot gases circulating in the same direction.
  • the blades arranged inside the drum make it possible to lift the aggregates and then to let them fall so that they occupy practically the entire cross section of the drum, over at least part of its length.
  • the molten bitumen is introduced into the drum so as to be mixed with the aggregates, the drum ensuring the drying of the aggregates and their coating with the bitumen.
  • ready-mix mixes and the hot gases which have passed through the drum are recovered.
  • Bituminous mixes must contain, in addition to aggregates and bitumen, a certain proportion of fines, that is to say materials having a particle size less than 80 microns. If the starting aggregates contain a small quantity of fines, it may be necessary to add them, as independent constituents, to the inlet of the drum. On the other hand, during the drying of the aggregates, the hot gases circulating in the drum tend to separate the fines from the aggregates and to entrain them towards the exit of the drum where these fines are found in the hot gases escaping. at the fireplace. It is therefore necessary to provide on the coating installations, filters allowing the trapping of fines before letting escape the gases recovered in the drum, by the chimney of the coating station. The fines recovered by the filters can be reintroduced into the drum to maintain the level of fines in the asphalt at its necessary value.
  • a device has also been proposed, described in French patent application No. 2,327,048 of October 8, 1975, which makes it possible to carry out a practically complete drying of the aggregates, prior to the introduction of the bitumen and, despite everything, to avoid the emission of dust in the gases discharged at the outlet of the drum.
  • the preliminary drying is carried out in an area of the drum where a very dense curtain of materials is formed throughout the section of the drum.
  • the introduction of the bitumen is carried out just behind the curtain, the mixing then being carried out by lifting and falling of the materials throughout the section of the drum.
  • the bituminous coated materials occupying the entire section of the drum make it possible to trap the fines entrained by the hot gases in the drying zone. There are therefore gases leaving the drum containing a small proportion of fines and it is thus possible to guarantee a minimum content of fines in the mix.
  • the starting content of fines in the aggregates is extremely high and this content exceeds the desirable final content in mixes.
  • Such devices may include an introduction ring for recycled materials obtained by crushing or milling in the vicinity of the central part of the drum. It has been proposed to extract the excess fines at the level of the recycling ring by taking a portion of the gases in circulation.
  • a method has the drawback of reducing the efficiency of the installation and preventing it from operating in recycling, when the device for extracting the gases in the recycling ring is put into operation.
  • the object of the invention is therefore to propose a process for the production of bituminous coated products in a mixing drum dryer, from aggregates containing an amount of fines in excess of the quantity required in the coated materials, the aggregates being introduced in continuous at one end of the drum through which the flame of a burner enters then transported inside the drum whose axis is slightly inclined with respect to the horizontal, so as to be brought into contact with the hot gases of the burner crossing the drum in the same direction as the aggregates and finally, mixed with a liquid bituminous substance and kneaded to achieve their coating by this substance, the aggregates being lifted and falling in the drum to occupy a large part of its cross section during a part of their journey inside the drum corresponding to an aggregate drying zone, a process which makes it possible to easily obtain an optimal final content e n fines in aggregates.
  • the invention also relates to a device for manufacturing bituminous coated products from aggregates containing a large amount of fines.
  • a kneading dryer drum constituted by a cylindrical casing 1 of great length having a longitudinal axis whose direction is close to the horizontal.
  • This drum is rotatably mounted around its axis by means of devices not shown and this axis is slightly inclined relative to the horizontal so that the end of the inlet 2 of the drum is at a level slightly higher than the end outlet 3.
  • the flame 4 of a burner (not shown) penetrates through the inlet end 2 of the drum, through which the aggregates also penetrate.
  • These aggregates are constituted by a material with a large particle size such as pebbles and / or sand containing a proportion of fines with a particle size less than 80 microns relatively large and for example greater than 8%, that is to say greater than the maximum proportion of fines generally accepted to obtain a good quality asphalt.
  • the drum has successive zones 5, 6, 7, 8 and 9 which are distinguished from each other by the shape of the blades lining the surface of the drum over the length of the corresponding zones.
  • the interior surface of the drum is lined with helical fins which ensure rapid introduction of the aggregates into the drum, so that these aggregates remain in contact with the interior wall of the drum cover 1.
  • zone 6 as can be seen in FIG. 2, the inner surface of the drum is lined with screen vanes 10 which allow the material to be transported to the periphery of the drum and protect it from the flame 4.
  • screen vanes are described in French patent application 80-00570 of January 11, 1980.
  • the aggregates 12 are thus protected in the entry zones 5 and 6 against a direct action of flame 4 and undergo only limited preheating.
  • the flame develops in the free central zone of the drum, the envelope 1 of which is protected by the aggregates 12 retained by the screen vanes 10.
  • the use of screen vanes also makes it possible to avoid the bursting of the aggregates by direct contact. with the flame and therefore the formation of fines in addition to those introduced with the aggregates.
  • zone 7 the internal surface of the casing 1 is lined with several sets of blades 14, the cross section of which is in the form of hooks. These hook blades 14 make it possible to raise the aggregates 12 to the highest point of the drum and to allow them to fall over the entire cross section of the drum to form an extremely dense curtain of aggregates stopping the radiation of the flame and allowing drying. intense aggregates 12.
  • the casing 1 of the drum is lined with blades 15 in the form of gutters placed less closely together than the hook blades 14 and making it possible to pour the aggregates 12 practically dry, over a large part of the section of the drum. .
  • the aggregates 12 are thus in contact with the hot gases circulating in the drum between the inlet face 2 and the outlet face 3, so that these gases entrain the fines provided by the aggregates 12.
  • the fines which are no longer bound by the humidity of the aggregates can detach from them, so that they are entrained by hot gases.
  • zone 9 which is the kneading zone of the drum
  • the casing 1 is provided with angles 18 of low height which make it possible to knead the aggregates mixed with the bitumen in contact with the internal surface of the casing 1, in the lower part of the drum.
  • the bitumen-coated aggregates 12 are not lifted in the drum section, so that the hot gases loaded with fines do not come into contact with these coated aggregates. The fines are therefore not trapped and are found in the hot gases at the outlet of the drum which are sent to the dedusting installation allowing their separation.
  • the bitumen cane opens into the drum before the end of zone 8, there is a zone of length D in which the aggregates mixed with the bitumen are raised throughout the drum section and constitute a curtain of materials covered with liquid bitumen that the gases containing fines must pass through before entering zone 9.
  • This curtain formed of materials with high adhesiveness makes it possible to retain part of the fines suspended in the gases and thus constitutes a filter for hot gases.
  • the quantity of fines retained obviously depends on the length D and it is possible to adjust the position of the point of introduction of the bitumen to maintain exactly the quantity of excess fines in the hot gases. These excess fines are then entrained by the gases up to the exit of the drum and retained in the dust collectors of the coating station.
  • the rod 17 can also be placed just at the exit from the zone 8 and in this way the length D of the hot gas filtering zone is zero. A large quantity of fines is thus entrained with the hot gases towards the outlet of the drum.
  • the length of the zone 9 is determined so as to obtain sufficient mixing and therefore a good quality asphalt.
  • Fig. 6 we see a mixer dryer drum modified with respect to the drum shown in FIG. 1, to allow the introduction and processing of recycled materials.
  • the zones and equivalent elements in Figs. 1 and 6 have been designated by the same references.
  • the casing 1 of the drum has openings 22 separated by introduction troughs 23 having inclined surfaces.
  • the recycling ring 24 surrounding the casing 1 of the drum in the area 20 includes a hopper 25 for introducing recycled materials 26.
  • Inside the casing 1 is fixed a second coaxial casing of smaller diameter 27 on which are attached externally hvatico'tciates fins 28 and internally hook blades 29.
  • the recycled material 26 enters through the openings 22 in the casing 1 where these materials are supported by the inner casing 27 and the helical fins 28 which drive this material into the zone 8 of the drum.
  • the recycled materials are then dried and heated in zone 8, by direct contact with the hot gases circulating in the drum.
  • the heat input to the recycled materials is such that the bitumen contained in these materials begins to melt.
  • the fines entrained by the gases are not stopped by the materials in the kneading zone 9, kneading taking place without lifting the materials in contact with the internal surface of the casing 1.
  • zone 8 the recycled materials raised in the drum also do not allow significant trapping of the fines entrained by the gases since the melting of the bitumen contained by the recycled materials does not really start until the exit from zone 8.
  • a coating station which includes a drum 30 whose casing 1 is inclined relative to the horizontal plane fixed on a platform 31.
  • a burner 32 penetrates through the inlet end of the drum and a chamber evacuation 33 collects at the outlet of the drum the prepared mixes and communicates at its upper part with a sheath 36 allowing the hot gases containing the fines to pass through a dedusting installation 37.
  • the dedusting installation 37 contains either multicyclones and scrubbers or bag filters.
  • the purified gases are discharged into the atmosphere through a chimney 38 and the recovered fines are evacuated (arrow 40) by a screw handling device 39.
  • the method and the device according to the invention have the main advantages of making it possible to reduce the content of fines in an aggregate and to carry out the coating of this aggregate in the same device comprising a simple means of adjusting the residual content of fines.
  • This adjustment means can advantageously consist of a bitumen introduction lance opening into the drum at an adjustable introduction point in the vicinity of the end of the drying zone with lifting of the materials in the drum.
  • the device can also be designed to be able to process recycled materials obtained by milling or by crushing bituminous road surfaces and containing a relatively large quantity of fines produced during milling or crushing.
  • the content of fines in the mixes coming either from recycled materials or from new aggregates introduced at the inlet of the drum can be lowered using the process according to the invention, by entraining the excess fines in the hot gases passing through the drum.
  • the extraction of the fines with the gases leaving the drum and not at the level of the recycling ring makes it possible to simultaneously remove the fines and the recycling.
  • the process and the device according to the invention therefore make it possible to develop bituminous products from aggregates containing large proportions of fines.
  • the blades for lifting the materials in the different zones of these drums can have different shapes from those that have been described and shown.
  • the kneading devices for the end region of the drum can be of any shape and size and, in some cases, it is even possible to design a kneading zone where the interior surface of the drum casing does not have any mixing device is completely smooth.
  • the bitumen introduction device can be constituted by a device different from a cane whose outlet end has an adjustable position in the vicinity of the end of the drying zone with lifting of the materials.
  • This device can be fixed and arranged, for example, exactly at the exit from the drying zone with lifting, that is to say at the entry to the mixing zone without lifting. This provision will generally be adopted in the case of extremely dusty aggregates.
  • the method and the device according to the invention apply to the hot production of any bituminous mix, from aggregates containing large amounts of fines, with or without introduction of recycled materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP86401067A 1985-05-24 1986-05-21 Verfahren und Vorrichtung zum Herstellen von bitumenumhüllten Stoffen mit einer grossen Menge von Füller enthaltenden Aggregaten Withdrawn EP0203856A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8507907A FR2582329B1 (fr) 1985-05-24 1985-05-24 Procede et dispositif de fabrication de produits enrobes bitumineux a partir d'agregats renfermant une forte quantite de fines.
FR8507907 1985-05-24

Publications (1)

Publication Number Publication Date
EP0203856A1 true EP0203856A1 (de) 1986-12-03

Family

ID=9319568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401067A Withdrawn EP0203856A1 (de) 1985-05-24 1986-05-21 Verfahren und Vorrichtung zum Herstellen von bitumenumhüllten Stoffen mit einer grossen Menge von Füller enthaltenden Aggregaten

Country Status (5)

Country Link
US (1) US4738539A (de)
EP (1) EP0203856A1 (de)
ES (1) ES8708256A1 (de)
FR (1) FR2582329B1 (de)
PT (1) PT82622A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397549A1 (de) * 1989-05-12 1990-11-14 Ermont. C.M. Verfahren und Vorrichtung zur Messung des Gehaltes an bituminösen Bindemitteln eines Mischgutes
WO2013144518A1 (fr) * 2012-03-29 2013-10-03 Argumat Dispositif et procede de fabrication de produits enrobes a chaud

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5174650A (en) * 1990-07-23 1992-12-29 Cedarapids, Inc. Dual drum recycle asphalt drying and mixing method and apparatus
US5090813A (en) * 1990-07-23 1992-02-25 Cedarapids, Inc. Dual drum recycle asphalt drying and mixing method and apparatus
US5203693A (en) * 1991-10-01 1993-04-20 Astec Industries, Inc. Rotary drum dryer having internal flights
SE509095C2 (sv) * 1997-04-25 1998-12-07 Asfaltsteknik I Gaelloe Ab Sätt och anordning för beredning av asfalt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606422A1 (de) * 1975-02-22 1976-08-26 Parker Ltd Frederick Verfahren und vorrichtung zum herstellen von strassendeckenmaterial
DE2645344A1 (de) * 1975-10-08 1977-04-14 Creusot Loire Vorrichtung fuer das herrichten von material fuer den bau und die ausbesserung von strassen
EP0032468A2 (de) * 1980-01-11 1981-07-22 Creusot-Loire Vorrichtung zur Herstellung von Schwarzgemischen ausgehend von Zuschlagstoffen, Bitumen und Feststoffen, die bei hoher Temperatur zum Schadennehmen neigen
US4398826A (en) * 1980-04-14 1983-08-16 Mendenhall Robert Lamar Asphaltic concrete recycling apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089508A (en) * 1976-02-18 1978-05-16 Alliance Industries, Inc. Method of processing bituminous paving mixtures and apparatus therefor
US4211490A (en) * 1976-05-10 1980-07-08 Astec, Industries, Inc. Drum mix asphalt plant with fiber filter dust collector
CA1067891A (en) * 1976-05-10 1979-12-11 Astec Industries Drum mix asphalt plant with fiber filter dust collector
US4147436A (en) * 1977-08-29 1979-04-03 Cmi Corporation Method and apparatus for producing hot mix asphalt utilizing recyclable asphalt aggregate
US4300837A (en) * 1980-03-07 1981-11-17 Creusot-Loire Device for the preparation of coated bituminous products for road surfacing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606422A1 (de) * 1975-02-22 1976-08-26 Parker Ltd Frederick Verfahren und vorrichtung zum herstellen von strassendeckenmaterial
DE2645344A1 (de) * 1975-10-08 1977-04-14 Creusot Loire Vorrichtung fuer das herrichten von material fuer den bau und die ausbesserung von strassen
EP0032468A2 (de) * 1980-01-11 1981-07-22 Creusot-Loire Vorrichtung zur Herstellung von Schwarzgemischen ausgehend von Zuschlagstoffen, Bitumen und Feststoffen, die bei hoher Temperatur zum Schadennehmen neigen
US4398826A (en) * 1980-04-14 1983-08-16 Mendenhall Robert Lamar Asphaltic concrete recycling apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397549A1 (de) * 1989-05-12 1990-11-14 Ermont. C.M. Verfahren und Vorrichtung zur Messung des Gehaltes an bituminösen Bindemitteln eines Mischgutes
FR2646911A1 (fr) * 1989-05-12 1990-11-16 Ermont Cm Procede et dispositif de mesure de la teneur en liant bitumineux de materiaux enrobes produits dans une installation d'enrobage
WO2013144518A1 (fr) * 2012-03-29 2013-10-03 Argumat Dispositif et procede de fabrication de produits enrobes a chaud
FR2988741A1 (fr) * 2012-03-29 2013-10-04 Argumat Dispositif de fabrication de produits enrobes a chaud, par exemple avec du bitume, et procede de fabrication d'enrobes a chaud

Also Published As

Publication number Publication date
FR2582329A1 (fr) 1986-11-28
ES555260A0 (es) 1987-10-01
FR2582329B1 (fr) 1987-08-14
US4738539A (en) 1988-04-19
ES8708256A1 (es) 1987-10-01
PT82622A (fr) 1986-06-01

Similar Documents

Publication Publication Date Title
CH628381A5 (en) Device for preparing bituminous mix products for road pavements
EP0032468A2 (de) Vorrichtung zur Herstellung von Schwarzgemischen ausgehend von Zuschlagstoffen, Bitumen und Feststoffen, die bei hoher Temperatur zum Schadennehmen neigen
EP0347281A1 (de) Vorrichtung zur Aufbereitung von bituminösem Mischgut in einem unbeweglichen Mixer
EP0410889B1 (de) Verfahren und Vorrichtung zur Behandlung von Abfallglas oder Mineralfasern für ihre Rückgewinnung
FR2632669A1 (fr) Dispositif de preparation de produits enrobes bitumineux constitue par un tambour
FR2631354A1 (fr) Dispositif et procede de preparation de produits bitumineux
CH669496A5 (de)
EP0203856A1 (de) Verfahren und Vorrichtung zum Herstellen von bitumenumhüllten Stoffen mit einer grossen Menge von Füller enthaltenden Aggregaten
CA2984710A1 (fr) Four de craquage
EP0020260A1 (de) Verfahren und Vorrichtung zum Trocknen verglasbarer verdichteter Mischungen
EP0391768B1 (de) Trommeltrockner und -mischer mit Brenner für die Aufbereitung von bitumenumhüllten Stoffen
FR2542760A1 (fr) Installation perfectionnee pour le traitement en continu de matieres en fusion en vue de l'obtention de produits bouletes
FR2661687A1 (fr) Melange a base de bitume pour le revetement des surfaces.
CA2183786C (fr) Procede et installation de traitement de dechets par sechage, sublimation, oxydation et combustion
FR2668774A1 (fr) Procede et dispositif de production d'un combustible solide a partir de dechets combustibles.
EP0033812A1 (de) Vorrichtung zur Herstellung umhüllter bituminöser Produkte für Strassendecken
FR2675510A1 (fr) Procede et dispositif de preparation d'enrobe bitumineux.
FR2657097A1 (fr) Dispositif de preparation de produits enrobes bitumineux comportant un tambour a courants paralleles et un tambour a contre-courant et procede correspondant.
EP0027398B1 (de) Verfahren und Anlage für die Behandlung eines Gases, wobei ein Gasstrom mit Festteilchen in Berührung gebracht wird
CH655944A5 (fr) Appareil pour la calcination du coke.
EP0491611A1 (de) Verfahren zur Behandlung von Kieselsäurestäuben mit Berücksichtigung ihrer Weisskraft und Apparat zur Durchführung des Verfahrens
FR2572390A1 (fr) Perfectionnements a l'alimentation en materiau etirable dans les techniques de production de fibres minerales
FR2578833A1 (fr) Procede et installation pour la preparation d'un produit en poudre obtenu a partir de dechets de fibres de verre " e " pour fibres textiles
FR2491943A1 (fr) Procede pour diminuer l'emission de particules solides lors du defournage d'une charge de coke et cheminee pour mettre en oeuvre ce procede
FR2614394A1 (fr) Four d'incineration a sole tournante autour d'un axe vertical

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19870527

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19871106

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MARCONNET, GUY