EP0048952A1 - Procédé pour la préparation d'un mélange bitumineux dans des mélangeurs à tambour ainsi que des appareils pour la mise en oeuvre du procédé - Google Patents

Procédé pour la préparation d'un mélange bitumineux dans des mélangeurs à tambour ainsi que des appareils pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0048952A1
EP0048952A1 EP19810107571 EP81107571A EP0048952A1 EP 0048952 A1 EP0048952 A1 EP 0048952A1 EP 19810107571 EP19810107571 EP 19810107571 EP 81107571 A EP81107571 A EP 81107571A EP 0048952 A1 EP0048952 A1 EP 0048952A1
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EP
European Patent Office
Prior art keywords
drum
drum mixer
mixer
mixing
rods
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.)
Ceased
Application number
EP19810107571
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German (de)
English (en)
Inventor
Emile Jacques Muntzer
Paul Dr. Muntzer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0048952A1 publication Critical patent/EP0048952A1/fr
Ceased legal-status Critical Current

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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
    • E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
    • E01C19/1068—Supplying or proportioning the ingredients
    • E01C19/1072—Supplying or proportioning the ingredients the solid 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
    • 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
    • E01C2019/1081—Details not otherwise provided for
    • E01C2019/109—Mixing containers having a counter flow drum, i.e. the flow of material is opposite to the gas flow
    • 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 process for the preparation of a bituminous mixture in drum mixers, in particular for road construction, in which the aggregates, which are not yet pre-dried by drying devices and removed from the mineral landfill, are generally surface-dry to moist, via intermediate storage of a heated drum mixer arranged inclined in the outlet direction abandoned, in or before this, mixed with bituminous binder at low temperature and the good parts are then - with strong heat supply by heating gases - heated and mixed further and the mix is continuously discharged, the heating gases, after they emerge from the drum, in are generally discharged from fine particles and pollutants separated from the goods as well as devices for their exercise.
  • lifting vane internals In the classification given there, a distinction is made between lifting vane internals, simplex internals, cross internals and quadrant internals.
  • lifting blades i.e. the simplest form of installation, primarily suitable.
  • the selected cross section of the lifting blades e.g. semicircular troughs, isosceles or isosceles, radially directed 90 ° angle profiles or equally directed, but having a larger angle than 90 °, may vary from case to case.
  • U-profiles that are radially directed with one of their flanges on the inner periphery with their web are often used.
  • the envelope circle ⁇ determined by the ends of the radially directed webs of the lifting blades, and the slope angle ⁇ resulting from the slipping material in the alveoli - the reference line r-r; to the one that runs through the center and is directed from the vertical towards the rising part of the drum - and leads parallel lines to this reference line to the boundary edges of the short legs that determine the height of the lifting blades and the diameter of the enveloping circle ⁇ , so that is Slope line can be represented precisely in each individual alveolus.
  • the empty alveoli are continuously loaded and filled again by the good task and by the portion in free fall.
  • the alveoli spread its contents across the cross-section of the drum according to the drawing graph wherein the remaining quantity of material circulation in the respective P OSI shown in dotted lines and the quantity has slid is shown blackened.
  • the alveolus 9 which is directed towards the base of the drum in the descending phase, experiences a first partial filling, which increases via the alveoli 10, 1 and 2 to full filling. From alveolus 3, the partial delivery of the alveolar volume V takes place, indicated by positions a to f, while the remaining alveoli are identified by positions A to E. So much for the explanation of the inserted diagram.
  • the frequency of the distribution is determined by the drum speed N - 6 rpm, the distribution being able to be influenced only to a small extent by the shape and height of the lifting blades.
  • the throughput capacity required is determined by appropriate dimensioning of the dimensions of the drum, in particular its inclination and its speed, this capacity being variable in relation to the instantaneous moisture content of the material as a function of the possible burner output.
  • the goal aimed at by the designers is the best possible, i.e. to achieve even distribution of the raised mix over the cross-sectional area of the drum with maximum use of thermal energy, combined with a low dust discharge.
  • the total of the discarded shares corresponds to the content of an alveolus, as already explained earlier.
  • the individual contents of the dropping sections are ie 137.4 1 / sec, ie the content of an alveolus per second are thrown into the free cross-section.
  • the total volume does not participate in the formation of the cascade veil, but at least the material (a / b) released from the alveoli 3 and 4 must be subtracted, so that only 84 1 / sec for the formation of the cascade veil be available.
  • this high-speed gas stream is essentially only suitable for transferring convection heat to the metal parts in contact with it.
  • Some constructions are therefore provided with an annular disc at the end of the burnout zone of the flame, the external dimension of which is determined approximately by the inside diameter of the drum and the internal dimension of which is determined by the enveloping circle of the internals.
  • the resulting narrowing of the cross section leads to a corresponding acceleration of the heating gases, so that their tendency to separate the saft parts from the material is promoted.
  • the dust particles are only excreted to a very small extent, while a strong acceleration of the gases occurs due to the annular gap formed between the light drum diameter and the reflector, so that their tendency toward sweeping dust transport is further increased here.
  • the room load determined above must be multiplied by a proportionality factor due to the free-falling quantity of material of 1.18%.
  • the grain residence time in the cascade is more than 10 seconds, i.e. that this is thrown off more than twenty times during the passage of the material.
  • the solution to this problem according to the invention provides that the mixture consisting of additives and binders, due to the friction existing between it and the drum wall on the one hand and the internal friction of the material on the other hand, constantly repeats itself during its passage through the drum mixer into a hot mixture until the frictional forces overcome the frictional forces along or parallel to the inner wall of the rising drum mixer and return it to the drum base.
  • Such a process avoids the formation of dropping cascades and thus the main cause of the construction contract.
  • the material travels back and forth in the lower drum area as a constantly moving flow of material through the drum mixer, the volume of material lying on the base of the drum, the cross-section of which is to be regarded as a circular section distorted in particular at the lateral boundaries, and its free surface due to the length of the constantly oscillating position the chord of this segment of the circle and the drum length is determined.
  • Part of the radiant heat present in the drum space is then directly absorbed by the material via this surface, while the majority of the radiant heat is absorbed by the periphery not covered by the material, and — if the environment is neglected, most of the radiation is neglected good insulation, unavoidable radiation losses - as convection heat via the contact surface between the goods and the drum, which is determined by the length of the bend and the drum, is supplied to the goods, the heat absorption being additionally accelerated by the exchange of particles within the material mass.
  • a further improvement of the positive results of the invention described here is achieved while maintaining the selected clear drum diameter when the heat transfer from the drum wall to the material by enlarging the heat-transferring inner surface of the drum mixer - combined with a forcibly sliding sleeper-shaped guide of the drum base Good - increased and at the same time the mixing intensity is promoted, whereby it is proposed that the circulating, material and heat exchanging mixing process by mixing tools directed essentially inclined to the ascending radial, while maintaining the connection of the good, ie without dropping or free-fall phenomena of subsets.
  • the device for performing this method provides that the mixing tools, viewed in the direction of rotation of the drum mixer, the inner wall of which are adjoining elements which are inclined to the radial and formed by flat profiles, which are essentially arranged in a radially directed plane leading back to the drum wall and transferred into it support.
  • the internals thus formed practically form wedges pointing in the direction of rotation and promote the desirable threshold-shaped movement of the goods.
  • the rods are either directly connected to the inner periphery of the drum mixer - without the previously mentioned, additional internals - or that the rods are arranged in one or more rows on exchangeable, flat or curved drum wear plates that are adapted to the drum radius are, wherein the flat wear plates are supported on the inner periphery of the drum mixer and are attached to this.
  • the last proposed solution i.e. the arrangement of the bars on flat wear plates supporting the inner periphery of the drum mixer is particularly interesting.
  • the conversion of the originally cylindrical drum cross-section into a polygonal cross-section creates an excellent self-cleaning effect, while at the same time the mixing of the material is still activated, since the corners of the polygonal cross-section increase its circulation while at the same time supporting the heat exchange between the drum wall thus formed and the material :
  • a further embodiment of the device which also enables compliance with the principles of the invention which have already been emphasized, provides for
  • rods are replaced at least over a partial length of the drum mixer by radially directed, at a substantially uniform angle to the drum axis over the width of the wear plates, rows forming conveyor webs and - viewed in the direction of rotation - the conveyor webs of the subsequent series offset to the conveyor webs of the lead row, and that occasionally in each row of conveyor webs are provided in pairs at a distance from each other associated webs.
  • a rectified row of conveyor webs counteracts the main flow direction and thus promotes the mixing intensity at a reduced passage speed through the drum, which would lead to zero if the drum were in a horizontal position.
  • the process can be carried out both in a drum mixer in which the burner is used for either cocurrent or countercurrent firing - arranged in relation to the direction of the material flow through the drum.
  • the thermal stress on the binder is lower in direct current operation, while in counter current operation there is a better thermal efficiency.
  • the burner muffle is in each case a wide-dimensioned tube with an insulated jacket region, which is offset axially parallel in its position relative to the drum cross-section so that it is on the one hand in the is essentially outside of the material being moved and, on the other hand, is able to dissipate radiant heat to a large extent to the zone of the inner drum periphery not acted on by material to be mixed and to the mixing tools arranged here.
  • burner muffle must be arranged in the upper, descending area of the moving drum wall.
  • the radiant heat is transmitted particularly effectively to the wall area which is only little affected by the additives.
  • the arrangement is, however geeig especially for the counterflow - net, as the already largely and completely enveloped in a muffle-area aggregates can be conducted under the burner muffle without damaging influence of temperature through and as a ready mix to the discharge chute.
  • the directional insulation of the burner muffle further supports the desired protection of the goods.
  • the mixing tools are designed uniformly over the length of the mixing and heating section of the drum, although a mixed arrangement may be appropriate depending on the task.
  • a plurality of spaced-apart, segment-shaped recesses connected to the drum are arranged, the recesses of the deflectors being gap after gap.
  • This proposal is based on the observation result of a test carried out with a transparent model and is intended to alleviate the mismatch between the flow velocity of the heating gases and that of the mixed material through the drum mixer - which, according to current experience and knowledge, cannot be eliminated in principle - and contribute to improving heat utilization .
  • the flow velocity is reduced due to the arrangement of the deflectors, limited to the actual mixing area of the drum. Due to the constantly repetitive immersion of the deflectors in the flow of material, additional heat is supplied to the latter and, through the impact on the deflectors and the deflecting effect between them, any remaining free dust which may still be present is essentially separated.
  • aggregates of different grain sizes can be stored according to the number of cells and, according to the required recipe, added to the drum mixer.
  • a further development of the device provides that a trickle filter designed as an intermediate bunker is provided for the feed of the aggregates, a closed exhaust gas duct is the exhaust gases emerging from the drum mixer between this and the trickle filter to the chimney.
  • FIGS. 1 to 3 show an example of a cross section through a drum mixer 1, in which internals which are effective evenly over the circumference are provided as heat exchange surfaces and mixing tools.
  • the internals viewed in the direction of rotation of the drum, are formed by flat profiles 2 inclined to the radial, which are supported on the flat webs 3 leading back to the drum wall.
  • the internals 2, 3 formed in this way are - due to the inclination of the flat profiles 2 to the radial - not suitable for lifting the mix to such an extent that it can fall freely in separate grain sizes.
  • the intensity of the movement and thus the exchange along the drum wall is improved by the flat webs 3 connected, also pointing in the radial direction, rods 4, wherein, as shown in FIG. 2, these rods 4 are staggered in the development of the drum, gap to gap .
  • the profile of these rods pointing in the drive direction is shaped like a ploughshare and, as shown in the drawing, can be a square rod, the cross section of which has a point, i.e. Edge pointing in the direction of rotation.
  • the burner muffle 5 is arranged in accordance with the general statements already given in the descending region of the drum wall.
  • the distance between the individual bars or the ploughshare-shaped edges can generally be chosen between 5 cm and 25 cm and, in some cases, higher.
  • a greatly simplified embodiment provides that the internals formed from parts 2 and 3 are dispensed with, and the rods 4 are arranged either directly on the inner periphery of the drum or on wear plates 22 which are flat in their width, with the wear plates 22 on the drum wall are screwed on.
  • drum mixers the burners 9 and 9 'of which are offset axially parallel to the center of the drum and arranged in the descending part of the drum wall, preferably in the third cross-section quadrant (clockwise rotation).
  • FIGS. 4 to 6 FIG. 4 showing the drum cross section.
  • the rods 4 are arranged in offset rows by radially directed conveyor webs 4 ', which lead at an angle to the drum axis over the width of the wear plates 22, the angle of attack to the drum axis in the case of FIG. 5 being about 15 ° and the amount of the row offset half distance between the conveyor webs 4 '.
  • the conveyor webs 4 'of each row are arrow-shaped, also at an angle of approximately 15 °, i.e. enclosing them at an angle of approximately 60 °.
  • the distance between the conveyor webs 4 'in the case of the example according to FIG. 5 is between 20 and 40 cm. However, it can also be chosen larger.
  • the webs 4 ' have a height of 10 to 25 cm, the height dimension ultimately being determined by the intended filling, since it should have at least the height of the good position in the drum base.
  • FIGS. 7 to 11 show the device and the method. their training explained.
  • FIG. 7 shows a drum mixer 8 operated in direct current, a feed chute 10 for the additives, burner 9 with burner muffle 5, and the bitumen feed 23 attached in the usual high position of the drum 1.
  • This section shows the position of the deflectors 26/27, the actual deflector design 14 can be seen.
  • FIG. 9 shows a drum mixer 11, which, in contrast to the embodiment according to FIG. 7, is operated in countercurrent.
  • the mix and bitumen are added 12 and 23 in the region of the high drum position, while the burner 9 'with the burner muffle 5' is arranged in the low drum position.
  • FIG. 10 shows in a section II-II through FIG. 9 the position of the burner muffle 6 'in the drum cross section.
  • FIG. 11 shows a drum mixing system which has been further developed by combining a drum mixer 11 according to FIG. 9 with a trickle filter 16 and is operated in countercurrent to the mixing process and, as usual, is supplemented by a mix loading silo 31, the trickle filter 16 connected to the drum mixer 1 in the extended chimney 15 is arranged for transfer (e.g. FR-PS 79 24 572 in connection with FR-PS 79 21 118).
  • FIGS. 12 and 13 represent a device which is also known, namely a rotating silo 17 which is fed by conveyor belt 17 1 and consists of at least four silo cells 18, 19, 20 and 21 which, for example, make it possible to change under four different recipes without the feeder with the previously processed aggregate recipe must be emptied before the new recipe is started.
  • the control of the setting of the silo cells 18 - 20 is usually connected to the program control of the entire system and can be preselected at the same time - if the correct proportion of binder is set.
  • the known possibilities of program control are diverse and are not the subject of this analysis.
  • the assignment of the rotary silo 17 to the drum mixers 8 and 11 is indicated in FIGS. 7 and 9.
  • the rotary silo 17 can also be assigned to the feed belt 24 of the elevator 25 leading to the trickle filter 16.
  • the design of the deflectors 26/27 already mentioned, identified by FIG. 14 and arranged in the drum mixer 1 according to FIG. 7, is based on the observation result of an experiment carried out with a transparent model.
  • the ratio of the area of the cutout 27 to the remaining area of the deflector 26 and the number and spacing of the deflectors 26 to be installed must be determined on a case-by-case basis.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP19810107571 1980-09-25 1981-09-23 Procédé pour la préparation d'un mélange bitumineux dans des mélangeurs à tambour ainsi que des appareils pour la mise en oeuvre du procédé Ceased EP0048952A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8020790 1980-09-25
FR8020790A FR2490512A1 (fr) 1980-09-25 1980-09-25 Procedes et dispositifs d'enrobage bitumineux en tambours-secheurs-enrobeurs

Publications (1)

Publication Number Publication Date
EP0048952A1 true EP0048952A1 (fr) 1982-04-07

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EP19810107571 Ceased EP0048952A1 (fr) 1980-09-25 1981-09-23 Procédé pour la préparation d'un mélange bitumineux dans des mélangeurs à tambour ainsi que des appareils pour la mise en oeuvre du procédé

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485260A (zh) * 2013-09-30 2014-01-01 西安达刚路面机械股份有限公司 落料式搅拌装置
CN109647800A (zh) * 2018-12-29 2019-04-19 贵州莱利斯机械设计制造有限责任公司 一种磷铁环清理装置
WO2021232859A1 (fr) * 2020-05-22 2021-11-25 福建省铁拓机械股份有限公司 Dispositif de production de mélange d'asphalte recyclé continu

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE144848C (fr) *
US1911761A (en) * 1931-04-24 1933-05-30 Loomis Frederick Oscar Warren Method of preparing bituminous road surfacing materials
DE2143975C3 (fr) * 1951-01-28 1975-01-02 Wibau Westdeutsche Industrie- Und Strassenbau-Maschinen-Gmbh, 6461 Rothenbergen
DE2365087A1 (de) * 1973-12-28 1975-07-03 Nielsen & Son Maskinfab As H Verfahren und anlage zur herstellung von steinhaltigen asphaltmaterialien, z.b. fuer strassendecken
DE2617839B2 (de) * 1976-04-23 1978-06-01 Wibau (Westdeutsche Industrie- Und Strassenbau-Maschinen-Gesellschaft Mbh), 6466 Gruendau Einrichtung zum Aufbereiten von bituminösem Mischgut mit einer im Gleichstrom befeuerten Drehtrommel
US4130364A (en) * 1977-04-28 1978-12-19 Brown Ralph E Method and portable apparatus for treating asphalt paving material
US4136964A (en) * 1977-04-14 1979-01-30 Cmi Corporation Apparatus for simultaneously mixing and conveying particulate material
US4144359A (en) * 1977-11-22 1979-03-13 Efb Inc. Apparatus and method for controlling pollutant emissions and for enhancing the manufacture of asphaltic roofing
DE2645344B2 (de) * 1975-10-08 1979-09-20 Creusot-Loire, Paris Einrichtung zur Herstellung eines bituminösen Gemisches für den Straßenbau o.dgl

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE144848C (fr) *
US1911761A (en) * 1931-04-24 1933-05-30 Loomis Frederick Oscar Warren Method of preparing bituminous road surfacing materials
DE2143975C3 (fr) * 1951-01-28 1975-01-02 Wibau Westdeutsche Industrie- Und Strassenbau-Maschinen-Gmbh, 6461 Rothenbergen
DE2365087A1 (de) * 1973-12-28 1975-07-03 Nielsen & Son Maskinfab As H Verfahren und anlage zur herstellung von steinhaltigen asphaltmaterialien, z.b. fuer strassendecken
DE2645344B2 (de) * 1975-10-08 1979-09-20 Creusot-Loire, Paris Einrichtung zur Herstellung eines bituminösen Gemisches für den Straßenbau o.dgl
DE2617839B2 (de) * 1976-04-23 1978-06-01 Wibau (Westdeutsche Industrie- Und Strassenbau-Maschinen-Gesellschaft Mbh), 6466 Gruendau Einrichtung zum Aufbereiten von bituminösem Mischgut mit einer im Gleichstrom befeuerten Drehtrommel
US4136964A (en) * 1977-04-14 1979-01-30 Cmi Corporation Apparatus for simultaneously mixing and conveying particulate material
US4130364A (en) * 1977-04-28 1978-12-19 Brown Ralph E Method and portable apparatus for treating asphalt paving material
US4144359A (en) * 1977-11-22 1979-03-13 Efb Inc. Apparatus and method for controlling pollutant emissions and for enhancing the manufacture of asphaltic roofing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485260A (zh) * 2013-09-30 2014-01-01 西安达刚路面机械股份有限公司 落料式搅拌装置
CN103485260B (zh) * 2013-09-30 2015-08-12 西安达刚路面机械股份有限公司 落料式搅拌装置
CN109647800A (zh) * 2018-12-29 2019-04-19 贵州莱利斯机械设计制造有限责任公司 一种磷铁环清理装置
CN109647800B (zh) * 2018-12-29 2024-03-26 贵州莱利斯机械设计制造有限责任公司 一种磷铁环清理装置
WO2021232859A1 (fr) * 2020-05-22 2021-11-25 福建省铁拓机械股份有限公司 Dispositif de production de mélange d'asphalte recyclé continu

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Publication number Publication date
FR2490512A1 (fr) 1982-03-26
FR2490512B3 (fr) 1983-05-27

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