US3909873A - Device for dedusting loose materials - Google Patents

Device for dedusting loose materials Download PDF

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US3909873A
US3909873A US499523A US49952374A US3909873A US 3909873 A US3909873 A US 3909873A US 499523 A US499523 A US 499523A US 49952374 A US49952374 A US 49952374A US 3909873 A US3909873 A US 3909873A
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trough
strips
grate
slots
compressed air
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US499523A
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Alexandr Nikolaevich Minasov
Nikolai Viktorovich Florinsky
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
    • C10B57/005—After-treatment of coke, e.g. calcination desulfurization
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements

Definitions

  • the trough bottom has an opening with a slot type grate through which from a bottom inlet, a flow of compressed air is delivered to pass through the bed of material and be extracted together with dust particles of the material through an inlet in the top portion of the trough.
  • the slotted grate is composed of separate and parallel strips positioned in a step-like fashion perpendicular to the longitudinal axis of the trough. These strips are installed for possible turning in relation to their longitudinal axes to adjust the width of the slots therebetween.
  • the present invention relates to the by-product coke industry and more particularly to a device for dedusting loose materials, such as coke, when carried by conveyors.
  • the top portion of the trough has an opening with a duct inlet installed above the trough to extract the mixture of air and dust particles of loose material carried away by air.
  • the grate in these devices is essentially a perforated surface which, in the course of operation, is vibrated to facilitate the dust removal from the device.
  • One of the disadvantages of such devices is that at a sudden shut down of compressed air delivery, the openings of the perforated grate become clogged with lumps of loose material and the duct outlet delivering the compressed air is also choked by lumps of material falling through the grate openings.
  • the known devices are devoid of a possibility of adjusting the size of the grate openings to vary the compressed air flow parameters which narrows the range of their application.
  • the object of the present invention is to provide a device for dedusting loose materials with such a grate and whose design prevents the clogging thereof with lumps of the material being dedusted and also the choking of the compressed air delivery inlet even at a sudden shutdown of the compressed air delivery, which result in the improved operating characteristics of the device as the whole.
  • Another object of the present invention is to provide control over the compressed air flow parameters by varying the ability of the grate to pass air therethrough for dedusting loose materials of a different granular composition.
  • a device for dedusting loose materials travelling therethrough downwardly along an inclined covered trough having in its'bottom an opening provided with a grate to effect communication between the inner space of the trough with a duct outlet connected to the bottom thereof to deliver compressed air underneath the grate, while the top portion of the trough has an opening provided with a duct inlet to extract the mixture of air with dust particles of materials, with said mixture being created when an upward flow of compressed air passes through the bed of loose material.
  • the grate is of a slotted type and composed of separate and parallel strips positioned in a step-like fashion perpendicular to the longitudinal axis of the trough and installed for a possible simultaneous turning in relation to their longitudinal axes to adjust the width of the slots between these strips.
  • This step-like arrangement of the strips of the grate allows the loose material, in the course of its travel along the inclined trough, to flow successively from one strip down to another without falling into the slots between the strips even at a sudden shut-down of the compressed air delivery underneath the grate.
  • step-like arrangement of the strips of the grate makes the material more loose to improve the dedusting efficiency.
  • the turning of the grate strips is conveniently effected by means of levers with one end of each of levers being rigidly connected to the axle of the corresponding strip, while the other end thereof being pivotally connected to a common bar installed in parallel to the trough bottom for possible reciprocating motion thereof with respect to the trough when the width of the slots between the strips is being adjusted.
  • This feature allows the width of the slots between all the strips of the grate to be adjusted simultaneously.
  • the turning of the strips may be effected by a hydraulic piston unit with its body pivotally connected at its end to the lower surface of the trough bottom and with its bar pivotally connected to the end of the rod.
  • the strips of the grate are top-faced with an abrasionresistant material to prolong their service life.
  • FIG. 1 is a longitudinal sectional view of the coke dedusting device
  • FIG. 2 is a view taken along the arrow A of FIG. 1.
  • the coke dedusting device comprises an inclined top-covered trough 1 (FIG. 1) for a gravity flow of coke.
  • a bottom 2 of the trough 1 has an opening in which a slot type grate 3 is installed.
  • a duct outlet 4 secured below the grate 3 to the bottom 2 of the trough 1 is a duct outlet 4 connected to the delivery port of a blower 5 installed therebelow to deliver compressed air into the inner space of the trough 1 through the slots in the grate 3.
  • a duct inlet 7 connected, via a dust collecting device (not shown), to an upper blower 8 for extracting the mixture of air with dust particles of coke from the inner space of the trough above the bed of loose material lying on the grate 3.
  • the grate 3 is of the slot type, composed of separate and parallel to strips 9, with the strips being rectangular in shape. These strips 9 are arranged one-above-theother in a step-like succession and perpendicular to the longitudinal axis of the trough 1 so that longitudinal slots 10 are left between the longitudinal edges of the strips.
  • each strip 9 of the grate 3 Connected to each strip 9 of the grate 3 along the geometric axis thereof is a longitudinal axle 11 whose ends are mounted in bearings 12 (FIG. 2) fixed in side walls 13 of the trough 1.
  • One of the ends of the axle 1 1, protruding beyond the limits of the trough l is rigidly connected to a lever 14 and the opposite end of the lever is pivotally connected to an inclined bar 15 which is common for all the levers 14 and the bar is positioned in parallel to the bottom 2 of the trough 1.
  • This bar 15 has one end thereof connected to a rod 16 of a hydraulic cylinder piston unit whose body, 17 through its end is pivotally connected to the underside of the bottom 2 of the trough 1.
  • the strips 9 of the grate 3 are faced on the top with a abrasion-resistant material 18, say diabase (igneous rock);
  • the device operates as follows;
  • the volume rate of air drawn in by the upper blower 8 should exceed the volume rate of air delivered by the lower blower 5.
  • the compressed air flow parameters can be controlled (beside varying the rotational speed of the blower 5) by adjusting the width of the slots 10 between the strips 9 of the grate 3.
  • the hydraulic cylinder is actuated and its rod 16 moves the bar which turns the levers 14 through an equal angle.
  • the levers 14 turn the axles
  • the present device raises the code dedusting efficiency to improve working conditions in production buildings in which coke is processed.
  • a device for dedusting loose materials comprising: an inclined trough having side walls, a top and a bottom along which loose material travels downwards; a lower opening in the bottom of said trough; an upper opening in said top above the lower opening; a slot type grate mounted in said lower opening, said grate including separate parallel strips, the top surfaces of said strips being arranged in a descending step-like fashion perpendicular to the longitudinal axis of said trough for transferring the material step-by-step across said lower opening to the lower side thereof, said strips being mounted for simultaneous rotation about the longitudinal axes thereof to adjust the width of slots provided between and formed by said strips; a duct outlet connected to said lower opening to deliver compressed air from a source to the inner space of said trough via the slots between said strips of the grate; a source of suction connected to said upper opening to extract the mixture of air with dust particles of bulk material from the inner space of said trough, with the mixture being created when an upward flow of compressed air passes through the bed

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

A device for dedusting loose materials in which there is provided an inclined covered trough along which the loose material travesl downwards. The trough bottom has an opening with a slot type grate through which from a bottom inlet, a flow of compressed air is delivered to pass through the bed of material and be extracted together with dust particles of the material through an inlet in the top portion of the trough. The slotted grate is composed of separate and parallel strips positioned in a step-like fashion perpendicular to the longitudinal axis of the trough. These strips are installed for possible turning in relation to their longitudinal axes to adjust the width of the slots therebetween.

Description

Elite States Patent Minasov et a1. Uct. 7, 1975 [5 DEVICE FOR DEDUSTING LOOSE 2,028,834 1/1936 l-laworth 209/466 MATERIALS 2,058,381 12/1936 Lindgren 209/394 2,275,849 3/1942 Fraser 209/466 Inventors: Alexandr Nikolaevich Mina-50v, 2,554,416 5/1951 Morrissey 209 394 ulitsa Ivanova 12/16, kv. 59; Nikolai Viktorovich Florinsky, vezd Trinklera 5, kv. 76, both of Kharkov, U.S.S.R.
Filed: Aug. 22, 1974 App]. No.: 499,523
Related US. Application Data Continuation of Ser. No. 388,411, Aug. 15, 1973, abandoned.
US. Cl 15/306 B; 209/394; 209/466 Int. Cl. A47L 5/14 Field of Search 209/394, 466; 15/308, 303,
[56] References Cited UNITED STATES PATENTS 1,118,393 11/1914 Bowerman 209/466 1,644,753 10/1927 Stebbins 209/466 1,699,180 l/l929 Colgan 209/466 X Primary ExaminerPeter Feldlman Assistant Examiner-C. K. Moore Attorney, Agent, or Firm-Holman & Stern [57] ABSTRACT A device for dedus ting loose materials in which there is provided an inclined covered trough along which the loose material travesl downwards. The trough bottom has an opening with a slot type grate through which from a bottom inlet, a flow of compressed air is delivered to pass through the bed of material and be extracted together with dust particles of the material through an inlet in the top portion of the trough. The slotted grate is composed of separate and parallel strips positioned in a step-like fashion perpendicular to the longitudinal axis of the trough. These strips are installed for possible turning in relation to their longitudinal axes to adjust the width of the slots therebetween.
3 Claims, 2 Drawing Figures 08. Patent 0a. 7,1975
FIG.2
DEVICE FOR DEDUSTING LOOSE MATERIALS BACKGROUND OF THE INVENTION The present invention relates to the by-product coke industry and more particularly to a device for dedusting loose materials, such as coke, when carried by conveyors.
PRIOR ART There are known devices for dedusting loose materials, comprising an inclined trough along which these materials travel downwards by gravity. The bottom of the trough has an opening closed by a grate under which a duct outlet is installed to deliver compressed air from an appropriate source to the inner space of the trough underneath the grate.
The top portion of the trough has an opening with a duct inlet installed above the trough to extract the mixture of air and dust particles of loose material carried away by air.
The grate in these devices is essentially a perforated surface which, in the course of operation, is vibrated to facilitate the dust removal from the device. One of the disadvantages of such devices is that at a sudden shut down of compressed air delivery, the openings of the perforated grate become clogged with lumps of loose material and the duct outlet delivering the compressed air is also choked by lumps of material falling through the grate openings.
Moreover, the known devices are devoid of a possibility of adjusting the size of the grate openings to vary the compressed air flow parameters which narrows the range of their application.
OBJECTS AND SUMMARY OF THE INVENTION The object of the present invention is to provide a device for dedusting loose materials with such a grate and whose design prevents the clogging thereof with lumps of the material being dedusted and also the choking of the compressed air delivery inlet even at a sudden shutdown of the compressed air delivery, which result in the improved operating characteristics of the device as the whole.
Another object of the present invention is to provide control over the compressed air flow parameters by varying the ability of the grate to pass air therethrough for dedusting loose materials of a different granular composition.
These and other objects are achieved due to the provision of a device for dedusting loose materials travelling therethrough downwardly along an inclined covered trough having in its'bottom an opening provided with a grate to effect communication between the inner space of the trough with a duct outlet connected to the bottom thereof to deliver compressed air underneath the grate, while the top portion of the trough has an opening provided with a duct inlet to extract the mixture of air with dust particles of materials, with said mixture being created when an upward flow of compressed air passes through the bed of loose material.
According to the invention, the grate is of a slotted type and composed of separate and parallel strips positioned in a step-like fashion perpendicular to the longitudinal axis of the trough and installed for a possible simultaneous turning in relation to their longitudinal axes to adjust the width of the slots between these strips.
This step-like arrangement: of the strips of the grate allows the loose material, in the course of its travel along the inclined trough, to flow successively from one strip down to another without falling into the slots between the strips even at a sudden shut-down of the compressed air delivery underneath the grate.
This finally results in the improved performance of the dedusting device as no extra time is required to clean the grate and the air delivery outlet from lumps of materials trapped therein.
In addition, the step-like arrangement of the strips of the grate makes the material more loose to improve the dedusting efficiency.
It is also necessary to take into account that the positioning of the strips of the grate for possible adjustment of the width of the slots between the strips permits a varying of the clear slot area of the grate to control the flow rate of compressed air delivered into the trough, depending on the amount of loose material to be dedusted and its granular composition.
The turning of the grate strips is conveniently effected by means of levers with one end of each of levers being rigidly connected to the axle of the corresponding strip, while the other end thereof being pivotally connected to a common bar installed in parallel to the trough bottom for possible reciprocating motion thereof with respect to the trough when the width of the slots between the strips is being adjusted.
This feature allows the width of the slots between all the strips of the grate to be adjusted simultaneously.
The turning of the strips may be effected by a hydraulic piston unit with its body pivotally connected at its end to the lower surface of the trough bottom and with its bar pivotally connected to the end of the rod.
The strips of the grate are top-faced with an abrasionresistant material to prolong their service life.
A specific embodiment of the present invention will now be described in detail with reference to the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of the coke dedusting device; and
FIG. 2 is a view taken along the arrow A of FIG. 1.
DETAILED DESCRIPTION OF THE INVENTION The coke dedusting device comprises an inclined top-covered trough 1 (FIG. 1) for a gravity flow of coke. A bottom 2 of the trough 1 has an opening in which a slot type grate 3 is installed. Secured below the grate 3 to the bottom 2 of the trough 1 is a duct outlet 4 connected to the delivery port of a blower 5 installed therebelow to deliver compressed air into the inner space of the trough 1 through the slots in the grate 3.
Installed in an opening formed in a cover or top portion 6 of the trough 1 above the grate 3 is a duct inlet 7 connected, via a dust collecting device (not shown), to an upper blower 8 for extracting the mixture of air with dust particles of coke from the inner space of the trough above the bed of loose material lying on the grate 3.
The grate 3 is of the slot type, composed of separate and parallel to strips 9, with the strips being rectangular in shape. These strips 9 are arranged one-above-theother in a step-like succession and perpendicular to the longitudinal axis of the trough 1 so that longitudinal slots 10 are left between the longitudinal edges of the strips.
Connected to each strip 9 of the grate 3 along the geometric axis thereof is a longitudinal axle 11 whose ends are mounted in bearings 12 (FIG. 2) fixed in side walls 13 of the trough 1.
One of the ends of the axle 1 1, protruding beyond the limits of the trough l is rigidly connected to a lever 14 and the opposite end of the lever is pivotally connected to an inclined bar 15 which is common for all the levers 14 and the bar is positioned in parallel to the bottom 2 of the trough 1.
This bar 15 has one end thereof connected to a rod 16 of a hydraulic cylinder piston unit whose body, 17 through its end is pivotally connected to the underside of the bottom 2 of the trough 1.
For longer surface life, the strips 9 of the grate 3 are faced on the top with a abrasion-resistant material 18, say diabase (igneous rock);
The device operates as follows;
The flow of coke during its downward travel along the bottom of the inclined trough 1 reaches the strips 9 of the grate 3 and successively transfers from each upper strip 9 to the next lower strip without falling into the slots 10 therebetween because of a certain travel speed of the coke flow.
When the blowers and 8 are actuated the flow of compressed air from the delivery port of the lower blower 5 via the duct outlet 4 passes upwards through the slots of the grate 3 and at the moment the coke is transfering from one strip 9 to another the air takes away fine dust particles of coke to the upper duct inlet 7 connected to the intake port of the upper blower 8.
To protect this blower 8 against premature wear, dust-laden air passes through a dust collecting device before reaching the blower.
For more efficient extraction of dust, the volume rate of air drawn in by the upper blower 8 should exceed the volume rate of air delivered by the lower blower 5.
The compressed air flow parameters, depending on the granular characteristics of coke, can be controlled (beside varying the rotational speed of the blower 5) by adjusting the width of the slots 10 between the strips 9 of the grate 3.
For this purpose, the hydraulic cylinder is actuated and its rod 16 moves the bar which turns the levers 14 through an equal angle. The levers 14 turn the axles The present device raises the code dedusting efficiency to improve working conditions in production buildings in which coke is processed.
What is claimed is:
l. A device for dedusting loose materials, comprising: an inclined trough having side walls, a top and a bottom along which loose material travels downwards; a lower opening in the bottom of said trough; an upper opening in said top above the lower opening; a slot type grate mounted in said lower opening, said grate including separate parallel strips, the top surfaces of said strips being arranged in a descending step-like fashion perpendicular to the longitudinal axis of said trough for transferring the material step-by-step across said lower opening to the lower side thereof, said strips being mounted for simultaneous rotation about the longitudinal axes thereof to adjust the width of slots provided between and formed by said strips; a duct outlet connected to said lower opening to deliver compressed air from a source to the inner space of said trough via the slots between said strips of the grate; a source of suction connected to said upper opening to extract the mixture of air with dust particles of bulk material from the inner space of said trough, with the mixture being created when an upward flow of compressed air passes through the bed of material travelling across said strips and slots along the trough.
2. The device according to claim 1, wherein the simultaneous rotation of the strips of the grate is effected by means of levers, each lever having one end rigidly connected to a corresponding strip at the rotative axis thereof and with the other end pivotally connected to a bar installed in parallel to the bottom of the trough for reciprocating motion in relation to the trough to adjust the width of the slots between the strips of the grate.
3. The device according to claim 2, wherein the reciprocating motion of the bar is effected by a hydraulic cylinder-piston unit whose cylinder is pivotally connected-via its end to a lower surface of the trough bottom, while its piston is pivotally connected to the end of the bar.

Claims (3)

1. A device for dedusting loose materials, comprising: an inclined trough having side walls, a top and a bottom along which loose material travels downwards; a lower opening in the bottom of said trough; an upper opening in said top above the lower opening; a slot type grate mounted in said lower opening, said grate including separate parallel strips, the top surfaces of said strips being arranged in a descending step-like fashion perpendicular to the longitudinal axis of said trough for transferring the material step-by-step across said lower opening to the lower side thereof, said strips being mounted for simultaneous rotation about the longitudinal axes thereof to adjust the width of slots provided between and formed by said strips; a duct outlet connected to said lower opening to deliver compressed air from a source to the inner space of said trough via the slots between said strips of the grate; a source of suction connected to said upper opening to extract the mixture of air with dust particles of bulk material from the inner space of said trough, with the mixture being created when an upward flow of compressed air passes through the bed of material travelling across said strips and slots along the trough.
2. The device according to claim 1, wherein the simultaneous rotation of the strips of the grate is effected by means of levers, each lever having one end rigidly connected to a corresponding strip at the rotative axis thereof and with the other end pivotally connected to a bar installed in parallel to the bottom of the trough for reciprocating motion in relation to the trough to adjust the width of the slots between the strips of the grate.
3. The device according to claim 2, wherein the reciprocating motion of the bar is effected by a hydraulic cylinder-piston unit whose cylinder is pivotally connected via its end to a lower surface of the trough bottom, while its piston is pivotally connected to the end of the bar.
US499523A 1973-08-15 1974-08-22 Device for dedusting loose materials Expired - Lifetime US3909873A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198725A (en) * 1976-12-18 1980-04-22 Trutzschler Gmbh & Co. Kg Cleaning and dust removal machine
US4411038A (en) * 1981-11-16 1983-10-25 Shinichi Mukai Pneumatic cleaning system
US4854004A (en) * 1987-12-28 1989-08-08 Orc Manufacturing Co., Ltd. Device for clearing the hole blockage of a liquid resist substrate
US4897203A (en) * 1988-02-26 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
US4897202A (en) * 1988-01-25 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
US5078548A (en) * 1987-04-24 1992-01-07 Ab Centralsug Method of and an installation for removing and transferring refuse
WO1994007404A1 (en) * 1992-10-02 1994-04-14 Merck & Co., Inc. Cascade dedusting apparatus
US6405405B1 (en) * 2000-04-20 2002-06-18 Carter Day International, Inc. Product cleaner with air flow control
US6415474B1 (en) * 1999-03-25 2002-07-09 Hauni Maschinenbau Ag Apparatus for transferring filter rods containing pulverulent, granular and analogous ingredients
US20050166360A1 (en) * 2004-01-30 2005-08-04 Fox Jeffrey A. Method and system for removing debris
WO2007025324A1 (en) 2005-08-29 2007-03-08 Airstream Recycling Forces Pty Ltd Apparatus and method for removing impurities in crushed recycled material
US20080087581A1 (en) * 2004-11-09 2008-04-17 Buhler Ag Device For Separating Granular Material
US20110215031A1 (en) * 2010-03-08 2011-09-08 Lars Vedsted Air separator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1118393A (en) * 1913-11-12 1914-11-24 Louis Bowerman Concentrator.
US1644753A (en) * 1924-11-10 1927-10-11 Albert H Stebbins Concentrator table
US1699180A (en) * 1927-02-09 1929-01-15 Frank J Colgan Apparatus for removing dust from stone crushing and segregating apparatus
US2028834A (en) * 1930-04-30 1936-01-28 Jeffrey Mfg Co Coal cleaning apparatus
US2058381A (en) * 1934-06-06 1936-10-20 Int Harvester Co Grain cleaning screen
US2275849A (en) * 1936-08-24 1942-03-10 Fraser Thomas Apparatus for separating mixed materials
US2554416A (en) * 1946-09-27 1951-05-22 Case Co J I Adjustable grain separator sieve section

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1118393A (en) * 1913-11-12 1914-11-24 Louis Bowerman Concentrator.
US1644753A (en) * 1924-11-10 1927-10-11 Albert H Stebbins Concentrator table
US1699180A (en) * 1927-02-09 1929-01-15 Frank J Colgan Apparatus for removing dust from stone crushing and segregating apparatus
US2028834A (en) * 1930-04-30 1936-01-28 Jeffrey Mfg Co Coal cleaning apparatus
US2058381A (en) * 1934-06-06 1936-10-20 Int Harvester Co Grain cleaning screen
US2275849A (en) * 1936-08-24 1942-03-10 Fraser Thomas Apparatus for separating mixed materials
US2554416A (en) * 1946-09-27 1951-05-22 Case Co J I Adjustable grain separator sieve section

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198725A (en) * 1976-12-18 1980-04-22 Trutzschler Gmbh & Co. Kg Cleaning and dust removal machine
US4411038A (en) * 1981-11-16 1983-10-25 Shinichi Mukai Pneumatic cleaning system
US5078548A (en) * 1987-04-24 1992-01-07 Ab Centralsug Method of and an installation for removing and transferring refuse
US4854004A (en) * 1987-12-28 1989-08-08 Orc Manufacturing Co., Ltd. Device for clearing the hole blockage of a liquid resist substrate
US4897202A (en) * 1988-01-25 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
US4897203A (en) * 1988-02-26 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
WO1994007404A1 (en) * 1992-10-02 1994-04-14 Merck & Co., Inc. Cascade dedusting apparatus
US6415474B1 (en) * 1999-03-25 2002-07-09 Hauni Maschinenbau Ag Apparatus for transferring filter rods containing pulverulent, granular and analogous ingredients
US6596090B2 (en) 1999-03-25 2003-07-22 Hauni Maschinenbau Ag Method for transferring filter rods containing pulverulent, granular and analogous ingredients
US6405405B1 (en) * 2000-04-20 2002-06-18 Carter Day International, Inc. Product cleaner with air flow control
US20050166360A1 (en) * 2004-01-30 2005-08-04 Fox Jeffrey A. Method and system for removing debris
US20080087581A1 (en) * 2004-11-09 2008-04-17 Buhler Ag Device For Separating Granular Material
WO2007025324A1 (en) 2005-08-29 2007-03-08 Airstream Recycling Forces Pty Ltd Apparatus and method for removing impurities in crushed recycled material
EP1919634A1 (en) * 2005-08-29 2008-05-14 Airstream Recycling Forces Pty Ltd Apparatus and method for removing impurities in crushed recycled material
EP1919634A4 (en) * 2005-08-29 2009-08-19 Airstream Recycling Forces Pty Apparatus and method for removing impurities in crushed recycled material
US20110056872A1 (en) * 2005-08-29 2011-03-10 Philip Andrew Byrne Apparatus and method for removing impurities in crushed recycled material
US8109392B2 (en) 2005-08-29 2012-02-07 Airstream Recycling Forces Pty Ltd Apparatus and method for removing impurities in crushed recycled material
US20110215031A1 (en) * 2010-03-08 2011-09-08 Lars Vedsted Air separator
US8172088B2 (en) * 2010-03-08 2012-05-08 Laitram, L.L.C. Air separator

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