US3453083A - Rotary extraction apparatus - Google Patents

Rotary extraction apparatus Download PDF

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Publication number
US3453083A
US3453083A US543213A US54321366A US3453083A US 3453083 A US3453083 A US 3453083A US 543213 A US543213 A US 543213A US 54321366 A US54321366 A US 54321366A US 3453083 A US3453083 A US 3453083A
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Prior art keywords
container
solvent
binder
filter
rotation
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US543213A
Inventor
Karl Beerli
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Spindel Motoren und Maschinenfabrik AG
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Uster Spindel Motoren Maschf
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Priority to DE1964S0092407 priority Critical patent/DE1523010A1/en
Priority to CH416966A priority patent/CH440763A/en
Application filed by Uster Spindel Motoren Maschf filed Critical Uster Spindel Motoren Maschf
Priority to US543213A priority patent/US3453083A/en
Priority to NL6605440A priority patent/NL6605440A/xx
Priority to FR58855A priority patent/FR1481289A/en
Application granted granted Critical
Publication of US3453083A publication Critical patent/US3453083A/en
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
    • C10C3/00—Working-up pitch, asphalt, bitumen
    • C10C3/007—Working-up pitch, asphalt, bitumen winning and separation of asphalt from mixtures with aggregates, fillers and other products, e.g. winning from natural asphalt and regeneration of waste asphalt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0269—Solid material in other moving receptacles
    • B01D11/0273—Solid material in other moving receptacles in rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/12—Other accessories for centrifuges for drying or washing the separated solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0442—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/38—Concrete; ceramics; glass; bricks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/42—Road-making materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids

Definitions

  • the material is soaked for approximately one hour in a given quantity of solvent in an open container.
  • a cover is then placed on the container, with a filter interposed between the cover and the container, and the latter gradually set in rotation, until the centrifugal force squeezes the solvent and dissolved binder radially through the filter.
  • the rotation is then increased to a maximum of 3600 rpm. and held there until no more liquid is forced through the filter.
  • the container is stopped and approximately 200 cm. of solvent is added.
  • the rotation is resumed as described above and continued until no more liquid is squeezed through the filter. This last step is then repeated until the filtered liquid assumes a constant straw yellow color.
  • the material from which the binder has been dissolved away is then dried and weighed.
  • the ditference in weight between the material before and after centrifuging is equal to the weight of the binder. This procedure takes several hours and its precision is very dependent on how thoroughly the solvent washes the material and dissolves away the binder. Since the procedure can not occur under cover, the staff is exposed to the injurious solvent vapors.
  • An object of the invention is a method and apparatus for separating a soluble component from a material that avoids the above-noted disadvantages of the prior art and that is quick and accurate.
  • FIGURE 1 is a view in cross section of a form of the apparatus of the invention.
  • FIGURES 2, 3, and 4 show the container and its contents at various stages of the procedure of the invention.
  • FIGURE 1 shows the apparatus of the invention at rest filled with material and a solvent.
  • a removable hemispherical container 1 is mounted on a vertical drive shaft 3 in a housing 2.
  • the shaft carries a brake drum 4 and is driven in a conventional manner by an electric motor, not shown.
  • the container 1 incorporates a rim 5 on which are removably mounted a ring-shaped filter 6 and a cover plate 7.
  • the housing 2 has a sloping inner channel 8 serving to collect and carry off the liquid forced through the filter 6 during centrifuging.
  • the channel 8 is connected to a collecting tank 9 via a delivery conduit 10.
  • a conduit 11 connected to the top of the tank discharges the undesired fumes of the solvent into the open air.
  • the housing 2 is well sealed to prevent escape of solvent fumes into the work area.
  • the container 1 further incorporates a conical hub 12 mounted on the drive shaft 3.
  • a conical spray tube 13 provided with openings 14 is spaced from and surrounds the hub to form an annular channel 15.
  • the tube 13 terminates in a portion 17 which, together with a wing nut 16, centers and fastens the cover 7.
  • the portion 17 has an axial passage 18 for accepting an axially movable feed pipe 19.
  • a supply container 20 for solvent is connected to the feed pipe 19 via a valve 21.
  • the brake drum 4 which is rigidly connected to the shaft 3, has a comically-shaped support wall 22 that carries the container 1 through the intermediary of its foot 23.
  • special means can be provided for rigidly securing the container 1 to the drive shaft 3 or the brake drum 4, it is generally satisfactory, as shown in FIGURE 1, simply to mount the container on a driven element and to depend upon friction and the weight of the container to form the coupling.
  • a brake band 24 or other suitable means is periodically operated by magnetic means (not shown) to act upon the drum 4, so that the container 1 is regularly braked at adjustable time intervals.
  • a suitable control not shown operates the magnetic means.
  • the drive motor can be a repulsion motor the speed of which is made continuously variable by shifting the brushes.
  • any other type of electric motor suitable for the purpose can be used, such as a squirrel-cage or a directcurrent motor.
  • a squirrel-cage or a directcurrent motor One must, however, take into account the additional cost of gearing and other auxiliary parts.
  • FIGURE 2 shows the container at the start of the process.
  • the material is still in the form of relatively large pieces of various sizes.
  • the individual pieces are comprised of filler held together by the binder.
  • the container is periodically braked to a complete stop and then released.
  • the solvent is driven towards the side wall of the container and upwards towards the filter 6.
  • the solvent flows back until it assumes the position of FIGURE 1.
  • the material in the container is thoroughly washed by the solvent as it moves back and forth.
  • the washing thus effected quickly dissolves the binder in the solvent.
  • the material is progressively dissociated until only insoluble pieces remain to which the undissolved portion of the binder still adheres.
  • FIGURE 3 shows the dissociated material which, because of the reduced weight of the smaller pieces, is now forced against the wall of the container.
  • the material and solvent is periodically forced against and up the wall and allowed to sink to the bottom. Since the material moves more slowly towards and up the wall and sinks more rapidly to the bottom than the solvent, the pronounced relative movement between the two assures a thorough washing of the material.
  • the brake control is shut off and the container allowed to slowly increase in speed.
  • the material piles up against the wall, the smallest pieces being at the outside and higher up the wall.
  • the material thus acts as a kind of pre-filter for the solvent being centrifuged.
  • a measured amount of fresh solvent is added via the feed pipe 19 and sprayed through openings 14 on the material piled against the wall, to rewash it.
  • Rewashing is preferably done only after the original quantity of solvent along with the dissolved binder has been centrifuged through the filter 6.
  • the rewashing illustrated in FIGURE 4 continues until aasaosa the liquid collecting in the channel 8 has a constant color, indicating that the material contains no more binder.
  • the delivery of solvent is now shut off and the centrifuging continued until all of the solvent is removed from the container 1.
  • a weighed amount of surfacing material preferably approximately two kilogramsis charged into the container 1 and the cover 7 closed down on the filter 6.
  • the container is then mounted on the drive shaft 3; and the feed pipe 19, which is connected to the housing 2, is guided into the passage 18.
  • the valve 21 is opened and a measured quantity of solvent is supplied to the container.
  • the container is set into periodic rotation by turning on the control means operating the magnetic means for the brake band 24.
  • the resulting rinsing of the surfacing material by the solvent dissociates the material after approximately five minutes.
  • the relative movement between material and solvent dissolves away the binder in a total of approximately fifteen minutes. If necessary, after five minutes the original quantity of solvent along with the already dissolved binder can be centrifuged through the filter 6, and the same washing procedure repeated one or more times with the addition of fresh solvent.
  • the container After a total washing time of approximately fifteen minutes in which the washing is either continuous or, as explained just above, interrupted with the addition one or more times of fresh solvent, the container is rotated progressively faster. As explained above, the material piles up against the container, the smallest particles being forced up the wall and congregating in the region of the filter 6. During rotation of the container at high speed the solvent and dissolved binder are forced into the channel 8. Without stopping the container fresh solvent is delivered at a predetermined rate via pipe 19 and continuously sprayed upon the material, which is rewashed. Any remaining binder adhering to the material is dissolved and collected in the channel 8.
  • the solvent feed is shut off and the material and solvent in the container centrifuged another fifteen to thirty minutesdepending on the kind of surfacing materialuntil the material is composed of nearly dry insoluble pieces virtually free of all binder.
  • the contents of the container are now dried and weighed. The amount of binder or bitumen is taken as the difference between the weight of the material at the beginning and at end of the procedure.
  • the centrifuging time can be saved by filling a second container with surfacing material. As soon as the contents of the first container have been centrifuged the second container can replace the first. In this way the apparatus is almost in continuous operation.
  • the method of the invention not only completely separates the binder in the shortest possible time, but leaves the insoluble pieces in their original shape and size. In certain cases this is decidedly advantageous, particularly when it is desiredas is the case with bituminous road surfacing materialsto determine the portion of insoluble pieces (gravel and stone) of various sizes in the material.
  • the material is not soaked but thoroughly washed in a virtually con- 4 tinuous process in a closed container.
  • the procedure is thus much shorter and prevents the escape of solvent fumes.
  • approximately double the amount of material can be treated, resulting in more reliable average values.
  • the periodic interruption of the rotation of the container 1 can be carried out by reversing the direction of rotation.
  • the means for interrupting the rotation of the container can be operated pneumatically, hydraulically, or mechanically, as well as magnetically.
  • the control means for operating the brake 24 may be electronic or of any other kind suitable for the purpose.
  • Apparatus for separating the binder from mixtures of bituminous binder and solid aggregates comprising a substantially hemispherical upwardly expanding container mounted for rotation about a vertical axis, a vertical drive shaft, a hub member formed on said container engaging said drive shaft.
  • a brake drum mounted on said drive shaft for rotation therewith, means on said brake drum for drivingly connecting the container to said drive shaft, said hub member extending from the bottom of said container upwardly within the container, a spray tube coaxially surrounding said hub member within the container and radially spaced from said hub member defining an annular chamber between said hub member and said spray tube, an annular rim on the top edge of said container, a cover on said rim, an annular filter engaged between said rim and said cover, the top of said spray tube traversing said cover, a solvent feed tube leading through the top of said spray tube to supply solvent to said annular sprace between said spray tube and said hub member, the Wall of said spray tube having perforations for radially directing solvent onto the bituminous mixture treated in said container, and a brake band coacting with said brake drum to allow periodic braking of said drive shaft and container, to intermittently vary the rotational speed of said container to thereby provide for relative movement between the solvent and the mixture in the container.

Description

July-l, 1969 K. BEERLI ROTARY EXTRACTIUN APPARATUS Filed April 18. 1966 INVENTOR.
Karl Beer/1' WM, {m4 M Fig. 1
Hfforne s United States Patent 3,453,083 ROTARY EXTRACTION APPARATUS Karl Beerli, Niederuster, Zurich, Switzerland, assignor to Spindel-, Motorenund Maschinenfabrik A.G., Zurich, Switzerland Filed Apr. 18, 1966, Ser. No. 543,213 Int. Cl. B01d 59/24, 11/02 US. Cl. 23-269 1 Claim ABSTRACT OF THE DISCLOSURE The present invention relates to a method for separating a soluble component from a material by washing the material under centrifugal force with a solvent.
In the method for determining the bitumen content of road surfacing materials, long approved by the American Society for Testing Materials, the material is soaked for approximately one hour in a given quantity of solvent in an open container. A cover is then placed on the container, with a filter interposed between the cover and the container, and the latter gradually set in rotation, until the centrifugal force squeezes the solvent and dissolved binder radially through the filter. The rotation is then increased to a maximum of 3600 rpm. and held there until no more liquid is forced through the filter. The container is stopped and approximately 200 cm. of solvent is added. The rotation is resumed as described above and continued until no more liquid is squeezed through the filter. This last step is then repeated until the filtered liquid assumes a constant straw yellow color. The material from which the binder has been dissolved away is then dried and weighed. The ditference in weight between the material before and after centrifuging is equal to the weight of the binder. This procedure takes several hours and its precision is very dependent on how thoroughly the solvent washes the material and dissolves away the binder. Since the procedure can not occur under cover, the staff is exposed to the injurious solvent vapors.
An object of the invention is a method and apparatus for separating a soluble component from a material that avoids the above-noted disadvantages of the prior art and that is quick and accurate.
The invention will now be described in detail with ref erence to the accompanying drawings, wherein:
FIGURE 1 is a view in cross section of a form of the apparatus of the invention; and
FIGURES 2, 3, and 4 show the container and its contents at various stages of the procedure of the invention.
FIGURE 1 shows the apparatus of the invention at rest filled with material and a solvent. A removable hemispherical container 1 is mounted on a vertical drive shaft 3 in a housing 2. The shaft carries a brake drum 4 and is driven in a conventional manner by an electric motor, not shown. The container 1 incorporates a rim 5 on which are removably mounted a ring-shaped filter 6 and a cover plate 7. The housing 2 has a sloping inner channel 8 serving to collect and carry off the liquid forced through the filter 6 during centrifuging. The channel 8 is connected to a collecting tank 9 via a delivery conduit 10. A conduit 11 connected to the top of the tank discharges the undesired fumes of the solvent into the open air. In a known manner the housing 2 is well sealed to prevent escape of solvent fumes into the work area.
3,453,083 Patented July 1, 1969 The container 1 further incorporates a conical hub 12 mounted on the drive shaft 3. A conical spray tube 13 provided with openings 14 is spaced from and surrounds the hub to form an annular channel 15. The tube 13 terminates in a portion 17 which, together with a wing nut 16, centers and fastens the cover 7. The portion 17 has an axial passage 18 for accepting an axially movable feed pipe 19. A supply container 20 for solvent is connected to the feed pipe 19 via a valve 21.
The brake drum 4, which is rigidly connected to the shaft 3, has a comically-shaped support wall 22 that carries the container 1 through the intermediary of its foot 23. Although special means can be provided for rigidly securing the container 1 to the drive shaft 3 or the brake drum 4, it is generally satisfactory, as shown in FIGURE 1, simply to mount the container on a driven element and to depend upon friction and the weight of the container to form the coupling. A brake band 24 or other suitable means is periodically operated by magnetic means (not shown) to act upon the drum 4, so that the container 1 is regularly braked at adjustable time intervals. A suitable control not shown operates the magnetic means.
The drive motor can be a repulsion motor the speed of which is made continuously variable by shifting the brushes. However, any other type of electric motor suitable for the purpose can be used, such as a squirrel-cage or a directcurrent motor. One must, however, take into account the additional cost of gearing and other auxiliary parts.
FIGURE 2 shows the container at the start of the process. The material is still in the form of relatively large pieces of various sizes. The individual pieces are comprised of filler held together by the binder. With rotation of the container 1 at a relatively low r.p.m., only the solvent is forced against the side wall of the container; the material, because it is composed of large pieces, remains on the bottom of the container.
The container is periodically braked to a complete stop and then released. During rotation the solvent is driven towards the side wall of the container and upwards towards the filter 6. During braking the solvent flows back until it assumes the position of FIGURE 1. Thus, the material in the container is thoroughly washed by the solvent as it moves back and forth.
The washing thus effected quickly dissolves the binder in the solvent. The material is progressively dissociated until only insoluble pieces remain to which the undissolved portion of the binder still adheres.
FIGURE 3 shows the dissociated material which, because of the reduced weight of the smaller pieces, is now forced against the wall of the container. As the container is periodically stopped and restarted, the material and solvent is periodically forced against and up the wall and allowed to sink to the bottom. Since the material moves more slowly towards and up the wall and sinks more rapidly to the bottom than the solvent, the pronounced relative movement between the two assures a thorough washing of the material.
After most of the binder has been dissolved away, one proceeds as follows.
The brake control is shut off and the container allowed to slowly increase in speed. As shown in FIGURE 4, the material piles up against the wall, the smallest pieces being at the outside and higher up the wall. The material thus acts as a kind of pre-filter for the solvent being centrifuged. During the centrifuging a measured amount of fresh solvent is added via the feed pipe 19 and sprayed through openings 14 on the material piled against the wall, to rewash it. Rewashing is preferably done only after the original quantity of solvent along with the dissolved binder has been centrifuged through the filter 6.
The rewashing illustrated in FIGURE 4 continues until aasaosa the liquid collecting in the channel 8 has a constant color, indicating that the material contains no more binder. The delivery of solvent is now shut off and the centrifuging continued until all of the solvent is removed from the container 1.
There will now be described in detail the method of the invention for separating bitumen from road surfacing materials.
A weighed amount of surfacing materialpreferably approximately two kilogramsis charged into the container 1 and the cover 7 closed down on the filter 6. The container is then mounted on the drive shaft 3; and the feed pipe 19, which is connected to the housing 2, is guided into the passage 18. The valve 21 is opened and a measured quantity of solvent is supplied to the container. Simultaneously or shortly thereafter the container is set into periodic rotation by turning on the control means operating the magnetic means for the brake band 24. The resulting rinsing of the surfacing material by the solvent dissociates the material after approximately five minutes. The relative movement between material and solvent dissolves away the binder in a total of approximately fifteen minutes. If necessary, after five minutes the original quantity of solvent along with the already dissolved binder can be centrifuged through the filter 6, and the same washing procedure repeated one or more times with the addition of fresh solvent.
After a total washing time of approximately fifteen minutes in which the washing is either continuous or, as explained just above, interrupted with the addition one or more times of fresh solvent, the container is rotated progressively faster. As explained above, the material piles up against the container, the smallest particles being forced up the wall and congregating in the region of the filter 6. During rotation of the container at high speed the solvent and dissolved binder are forced into the channel 8. Without stopping the container fresh solvent is delivered at a predetermined rate via pipe 19 and continuously sprayed upon the material, which is rewashed. Any remaining binder adhering to the material is dissolved and collected in the channel 8. As soon as the liquid coming through the filter has a continuous color, the solvent feed is shut off and the material and solvent in the container centrifuged another fifteen to thirty minutesdepending on the kind of surfacing materialuntil the material is composed of nearly dry insoluble pieces virtually free of all binder. The contents of the container are now dried and weighed. The amount of binder or bitumen is taken as the difference between the weight of the material at the beginning and at end of the procedure.
During the centrifuging time can be saved by filling a second container with surfacing material. As soon as the contents of the first container have been centrifuged the second container can replace the first. In this way the apparatus is almost in continuous operation.
The method of the invention not only completely separates the binder in the shortest possible time, but leaves the insoluble pieces in their original shape and size. In certain cases this is decidedly advantageous, particularly when it is desiredas is the case with bituminous road surfacing materialsto determine the portion of insoluble pieces (gravel and stone) of various sizes in the material.
Contrary to the method of the prior art, the material is not soaked but thoroughly washed in a virtually con- 4 tinuous process in a closed container. The procedure is thus much shorter and prevents the escape of solvent fumes. Moreover, approximately double the amount of material can be treated, resulting in more reliable average values.
A quick and exact determination of the bitumen content of road surfacing materials has the very considerable advantage in road construction that the unchecked portions of the road surface are much shorter.
The periodic interruption of the rotation of the container 1 can be carried out by reversing the direction of rotation.
The means for interrupting the rotation of the container can be operated pneumatically, hydraulically, or mechanically, as well as magnetically. The control means for operating the brake 24 may be electronic or of any other kind suitable for the purpose.
Although the method and apparatus have been described in relation to the removal of a bituminous binder from road surfacing materials, it will be apparent that the invention is broadly applicable to the problem of removing a component of a material using a solvent affecting only the one component.
I claim:
1. Apparatus for separating the binder from mixtures of bituminous binder and solid aggregates, comprising a substantially hemispherical upwardly expanding container mounted for rotation about a vertical axis, a vertical drive shaft, a hub member formed on said container engaging said drive shaft. a brake drum mounted on said drive shaft for rotation therewith, means on said brake drum for drivingly connecting the container to said drive shaft, said hub member extending from the bottom of said container upwardly within the container, a spray tube coaxially surrounding said hub member within the container and radially spaced from said hub member defining an annular chamber between said hub member and said spray tube, an annular rim on the top edge of said container, a cover on said rim, an annular filter engaged between said rim and said cover, the top of said spray tube traversing said cover, a solvent feed tube leading through the top of said spray tube to supply solvent to said annular sprace between said spray tube and said hub member, the Wall of said spray tube having perforations for radially directing solvent onto the bituminous mixture treated in said container, and a brake band coacting with said brake drum to allow periodic braking of said drive shaft and container, to intermittently vary the rotational speed of said container to thereby provide for relative movement between the solvent and the mixture in the container.
References Cited UNITED STATES PATENTS 603,395 5/1898 Baker 210-382 1,046,340 12/1912 Selwig 23269 X 1,782,179 11/1930 Rodler 210-382 X FOREIGN PATENTS 748,923 11/1944 Germany.
NORMAN YUDKOFF, Primary Examiner.
S. J. EMERY, Assistant Examiner.
US. Cl. X.R. 210-360, 368
US543213A 1964-07-31 1966-04-18 Rotary extraction apparatus Expired - Lifetime US3453083A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE1964S0092407 DE1523010A1 (en) 1964-07-31 1964-07-31 Method and device for separating the binder from binder-containing compositions
CH416966A CH440763A (en) 1964-07-31 1966-03-23 Method and device for separating the binder from mixtures of bituminous binders and solids
US543213A US3453083A (en) 1964-07-31 1966-04-18 Rotary extraction apparatus
NL6605440A NL6605440A (en) 1964-07-31 1966-04-22
FR58855A FR1481289A (en) 1964-07-31 1966-04-25 Process and plant for separating the binder from mixtures composed of bituminous binding products and solid substances

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1964S0092407 DE1523010A1 (en) 1964-07-31 1964-07-31 Method and device for separating the binder from binder-containing compositions
CH416966A CH440763A (en) 1964-07-31 1966-03-23 Method and device for separating the binder from mixtures of bituminous binders and solids
US543213A US3453083A (en) 1964-07-31 1966-04-18 Rotary extraction apparatus
NL6605440A NL6605440A (en) 1964-07-31 1966-04-22
FR58855A FR1481289A (en) 1964-07-31 1966-04-25 Process and plant for separating the binder from mixtures composed of bituminous binding products and solid substances

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US (1) US3453083A (en)
CH (1) CH440763A (en)
DE (1) DE1523010A1 (en)
FR (1) FR1481289A (en)
NL (1) NL6605440A (en)

Cited By (14)

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JPS55142502A (en) * 1979-04-24 1980-11-07 Masao Suzuki Automatic asphalt separator
US4320006A (en) * 1979-01-16 1982-03-16 Taiyu Shoji Kabushiki Kaisha Centrifugal oil separator
EP0159375A1 (en) * 1982-07-12 1985-10-30 The Dow Chemical Company Method and apparatus for the batch preparation of sample aliquots by solvent extraction and separation of solubles from nonsoluble particulate
US4647369A (en) * 1985-06-14 1987-03-03 Mobil Oil Corporation Catalyst dewaxing process using a slurry phase bubble column reactor
US4737263A (en) * 1985-06-11 1988-04-12 Mobil Oil Corporation Process and apparatus for catalytic dewaxing of paraffinic stocks and the simultaneous removal of cracked products
EP0333063A2 (en) * 1988-03-17 1989-09-20 Hermann Riede Strassen- Und Tiefbau Gmbh & Co. Kg Method and apparatus for determining the binding materials content of bituminous road-making materials
US5566605A (en) * 1993-11-09 1996-10-22 Seb S.A. Centrifugal type extraction cell having a deformable sealing joint for a hot beverage preparation machine
US7081232B1 (en) * 2002-03-15 2006-07-25 Ppg Industries, Ohio, Inc. Chemical feeder
USD778687S1 (en) 2015-05-28 2017-02-14 Supercooler Technologies, Inc. Supercooled beverage crystallization slush device with illumination
US9631856B2 (en) 2013-01-28 2017-04-25 Supercooler Technologies, Inc. Ice-accelerator aqueous solution
US9845988B2 (en) 2014-02-18 2017-12-19 Supercooler Technologies, Inc. Rapid spinning liquid immersion beverage supercooler
US10149487B2 (en) 2014-02-18 2018-12-11 Supercooler Technologies, Inc. Supercooled beverage crystallization slush device with illumination
US10302354B2 (en) 2013-10-28 2019-05-28 Supercooler Technologies, Inc. Precision supercooling refrigeration device
US11014098B2 (en) 2017-08-09 2021-05-25 Delta Separations, Llc Device, system and methods for separation and purification of organic compounds from botanical material

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Publication number Priority date Publication date Assignee Title
FR2424531A2 (en) * 1978-04-28 1979-11-23 Guigan Jean Appts. for conditioning liq. samples for analysis - comprising calibrated peripheral cells for optical measurement filled completely from central receptacle by centrifugation
IN154925B (en) * 1979-10-26 1984-12-22 Guigan Jean
FR2473723A2 (en) * 1980-01-11 1981-07-17 Guigan Jean Simultaneous analysis device for biological liq. - has carrier balls within peripheral sample cells of rotor held against ejection during centrifugation
EP0063910A3 (en) * 1981-04-24 1984-11-14 THOMAS BROADBENT & SONS LIMITED Multi phase separation process
DE19506358A1 (en) * 1995-02-23 1996-08-29 Fhf Strassentest Gmbh Quantitative recovery of bitumen binder from asphalt sample

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320006A (en) * 1979-01-16 1982-03-16 Taiyu Shoji Kabushiki Kaisha Centrifugal oil separator
JPS55142502A (en) * 1979-04-24 1980-11-07 Masao Suzuki Automatic asphalt separator
EP0159375A1 (en) * 1982-07-12 1985-10-30 The Dow Chemical Company Method and apparatus for the batch preparation of sample aliquots by solvent extraction and separation of solubles from nonsoluble particulate
US4737263A (en) * 1985-06-11 1988-04-12 Mobil Oil Corporation Process and apparatus for catalytic dewaxing of paraffinic stocks and the simultaneous removal of cracked products
US4647369A (en) * 1985-06-14 1987-03-03 Mobil Oil Corporation Catalyst dewaxing process using a slurry phase bubble column reactor
EP0333063A2 (en) * 1988-03-17 1989-09-20 Hermann Riede Strassen- Und Tiefbau Gmbh & Co. Kg Method and apparatus for determining the binding materials content of bituminous road-making materials
EP0333063A3 (en) * 1988-03-17 1990-09-05 Hermann Riede Strassen- Und Tiefbau Gmbh & Co. Kg Method and apparatus for determining the binding materials content of bituminous road-making materials
US5081046A (en) * 1988-03-17 1992-01-14 Hermann Riede Strassen-U.Tiefbau Gmbh & Co. Kg Method for determining the binder content of bituminous building materials
US5279971A (en) * 1988-03-17 1994-01-18 Hermann Riede Strassen-U. Tiefbau Gmbh U. Co. Kg Method for determining a binder content of bituminous building materials
US5566605A (en) * 1993-11-09 1996-10-22 Seb S.A. Centrifugal type extraction cell having a deformable sealing joint for a hot beverage preparation machine
US7081232B1 (en) * 2002-03-15 2006-07-25 Ppg Industries, Ohio, Inc. Chemical feeder
US9631856B2 (en) 2013-01-28 2017-04-25 Supercooler Technologies, Inc. Ice-accelerator aqueous solution
US10302354B2 (en) 2013-10-28 2019-05-28 Supercooler Technologies, Inc. Precision supercooling refrigeration device
US9845988B2 (en) 2014-02-18 2017-12-19 Supercooler Technologies, Inc. Rapid spinning liquid immersion beverage supercooler
US10149487B2 (en) 2014-02-18 2018-12-11 Supercooler Technologies, Inc. Supercooled beverage crystallization slush device with illumination
US10393427B2 (en) 2014-02-18 2019-08-27 Supercooler Technologies, Inc. Rapid spinning liquid immersion beverage supercooler
US10959446B2 (en) 2014-02-18 2021-03-30 Supercooler Technologies, Inc. Supercooled beverage crystallization slush device with illumination
USD778687S1 (en) 2015-05-28 2017-02-14 Supercooler Technologies, Inc. Supercooled beverage crystallization slush device with illumination
USD837612S1 (en) 2015-05-28 2019-01-08 Supercooler Technologies, Inc. Supercooled beverage crystallization slush device with illumination
USD854890S1 (en) 2015-05-28 2019-07-30 Supercooler Technologies, Inc. Supercooled beverage crystallization slush device with illumination
US11014098B2 (en) 2017-08-09 2021-05-25 Delta Separations, Llc Device, system and methods for separation and purification of organic compounds from botanical material

Also Published As

Publication number Publication date
FR1481289A (en) 1967-05-19
DE1523010A1 (en) 1969-12-04
NL6605440A (en) 1967-10-23
CH440763A (en) 1967-07-31

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