US3888352A - Gravity separator - Google Patents

Gravity separator Download PDF

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Publication number
US3888352A
US3888352A US481534A US48153474A US3888352A US 3888352 A US3888352 A US 3888352A US 481534 A US481534 A US 481534A US 48153474 A US48153474 A US 48153474A US 3888352 A US3888352 A US 3888352A
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US
United States
Prior art keywords
deck
particles
vertex
air
stream
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.)
Expired - Lifetime
Application number
US481534A
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English (en)
Inventor
Leslie G Kulseth
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.)
Forsbergs Inc
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Forsbergs Inc
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 Forsbergs Inc filed Critical Forsbergs Inc
Priority to US481534A priority Critical patent/US3888352A/en
Application granted granted Critical
Publication of US3888352A publication Critical patent/US3888352A/en
Priority to CH789775A priority patent/CH598874A5/xx
Priority to CA229,794A priority patent/CA1008017A/en
Priority to IT24608/75A priority patent/IT1039173B/it
Priority to JP50075424A priority patent/JPS5133351A/ja
Priority to GB26328/75A priority patent/GB1490280A/en
Priority to FR7519423A priority patent/FR2275241A1/fr
Priority to DE19752527697 priority patent/DE2527697A1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/10—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices using momentum effects
    • B07B13/11—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices using momentum effects involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters
    • B07B13/113—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices using momentum effects involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters shaking tables
    • 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
    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents

Definitions

  • ABSTRACT 21 AppL 431 534 A high capacity gravity separator for separating particulate material into difierent weight ranges.
  • the separator includes a vibrating. gently-sloping triangular [52] US. Cl. 209/115; 209/121, 209/135, k having a front g from which Separated p 209/467 cles are received and rearwardly converging side [51] Int. Cl B07b 13/10 edges fmming a rear vertex and upper and lower side [58] [mild or Search 209/466 vertices.
  • a stream of particles to be separated is 209/472 116 dropped toward the rear vertex of the deck, and a transverse air stream is flowed through the falling par [56]
  • the invention relates to a high capacity gravity separator for separating particulate material.
  • the separator includes a base and a generally triangular, vibratable, perforate deck mounted for side-to-side and up and down vibration to the base.
  • the triangular deck has a front facing edge from which separated particles are received, and two side edges meeting the front edge at respective side vertices, the side edges converging rearwardly and meeting at a rear vertex.
  • the deck is oriented to slope gently downwardly from its rear vertex to the front edge, and also from one side vertex to the other. Means are provided to flow air upwardly through the perforate deck to aid in the separation of particles thereon.
  • a discharge spout is carried above the deck in position to drop a stream of particles to be separated toward the deck adjacent its rear vertex.
  • Air flow means are also provided to direct a stream of air transversely through the stream of falling particles and substantially in the direction of the lower side vertex, the stream of air entraining and removing very light particles such as chaff or other impurities from the falling stream of particles and also preliminarily separating lighter particles from heavier particles by preferentially blowing the lighter particles further along the deck towards the lower side vertex.
  • Increasingly heavier particles are caused to move toward the front edge of the deck in increasing proximity to the side edge of the deck opposite the lower side vertex.
  • FIG. 1 is a perspective view of a gravity separator of the invention
  • FIG. 2 is a top view of the gravity separator of FIG. 1 with the upper housing removed to show the upper surface of the deck, and showing particles flowing across the deck;
  • FIG. 3 is a cross sectional view, partially broken away, and taken along line 3-3 of FIG. 2;
  • FIG. 4 is a partially broken away cross sectional view taken along line 44 of FIG. 2.
  • the gravity separator of the invention is denoted generally as 10 and includes a base 12 which is rigidly mounted to the floor, and a stationary housing carried by the base and which includes an upper compartment 14 having windows l4.l conveniently positioned so that an observer may view the separation procedure within the compartment.
  • the upper compartment 14 is bounded at its bottom by a gently sloping, perforate, generally triangular deck 16.
  • Mounted to an exhaust port near the top of the upper chamber 14 is an air discharge duct 18 which is powered by an exhaust fan 20, the duct and blower serving to remove air and entrained light particles from the upper compartment as will be explained in greater detail below.
  • the deck 16 is substantially triangular, as shown best in FIG. 2, and has a front facing edge 16:1; and side edges 16.2, 16.3 which converge rearwardly to meet at a rear vertex 16.4 and at an'angle generally less than Arising from the rearwardly convergent edges 16.2, 16.3 are side walls 16.5, 16.6, which meet rearwardly at the vertex 16.4, the side walls bounding the respective movement of lighter and heavier particles therealong and being substantially straight, the side wall 16.5 which bounds the flow of heavier particles being longer than the other side wall 16.6.
  • the rearwardly extending edges 16.2, 16.3 of the deck meet the front-facing edge 16.1 at side vertices 16.7, 16.8.
  • the deck itself is of perforate material such as fine stainless steel screening.
  • the deck is substantially planar and slopes gently downwardly both from the rear vertex 16.4 to the front-facing edge 16.1 and from one side vertex 16.7 to other side vertex 16.8.
  • a longitudinal spill-board 16.9 (FIGS. 2 and 4) which has a forwardly and downwardly slanting flange 17 down which the separated particles roll or slide as they are discharged from the front-facing edge of the deck.
  • a stationary collection hopper 12.1 which has downwardly converging side walls 12.2, 12.3 and a bottom 12.4 to which bags or other receptacles may be attached for the collection of separated particles from the hopper.
  • the front and rear walls of the hopper diverge downwardly slightly from the housing, and the interior of the collection hopper 12.1 is divided into a number of generally vertical compartments by longitudinal dividers 17.1 which are pivotally attached near their bottom ends within the hopper and which extend upwardly to terminate in knife edges 17.2 slightly below the lower edge of the spill-board.
  • the positions of the various dividers 17.1 within the hopper 12.1 are controlled by operating handles 17.3 (FIGS. 1 and 2) to which the dividers are coupled and which extend out of the hopper 12.1 for manipulation by an operator to change the weight ranges of particles collected in the hopper compartments.
  • the deck 16 is supported from beneath by a frame 17.4 which is mounted for side-to-side and up and down vibration on the base and to which is attached a motor-driven eccentric or similar apparatus (not shown) for oscillating or vibrating the deck generally from side to side and up and down, the vibrational movement of the deck urging heavier particles to move toward the higher side of the deck for eventual discharge from the deck adjacent the upper vertex 16.7.
  • the lower edge of the frame 17.4 is movably attached to the housing 12.1 by means of a flexible skirt or sleeve 17.5 extending about the periphery of the frame and defining a lower compartment 22.
  • the deck 16 is attached peripherally to the upper compartment 14 by means of a flexible, peripheral skirt or sleeve 17.7 (FIG. 3) mounted to the upper compartment by plate 17.6.
  • the flexible skirts 17.5, 17.7 provide a flexible coupling between the vibratable deck 16 and the stationary housing 12.1, and also serve to enclose the apparatus both above and below the deck.
  • the upper compartment 14 has an exhaust port 14.2 communicating with the duct 18 and fan 20, and is provided at its rear with a hopper-fed particle discharge port 14.3 which is spaced above the surface of the deck 16 facing the lower side vertex 16.8 and which serves to direct particulate matter onto the deck adjacent the rear vertex 16.4 at a point spaced slightly from the side wall 16.6.
  • the port 14.3 is fed particulate material (denoted generally as 11) by gravity from a hopper 14.4 at the rear of the device, the hopper having an adjustable gate 14.5 for controlling the flow rate of particulate matter from the hopper to the discharge port.
  • the air pressure in the upper compartment 14 is maintained below that in the lower compartment 22 so as to provide a pressure differential across the deck.
  • An air duct 22.1 (FIG. 3) has one end communicating with the lower compartment 22, and extends upwardly for insertion into the upper compartment 14 just below the particle discharge port 14.3.
  • the upper end 22.2 of the air duct is oriented to direct a stream of air through the particles falling from the discharge port 14.3, the air stream being directed generally parallel to the deck 16 and in the general direction of the lower vertex 16.8.
  • the exhaust port 14.2 is positioned generally above and downstream from the upper end 22.2 of the air duct, as shown in FIG. 3, to further lend directionality to the air stream and to exhaust very light particles entrained in the air stream.
  • Air within the lower compartment 22 also passes upwardly through the perforate deck 16 and through the particles traveling thereacross to agitate the particles and to generally bring the lighter particles to the top.
  • the pressure differential between the lower and upper compartments 22 and 14 may result from a vacuum in the upper compartment created by the exhaust fan 20 (FIG. 1), or air may be provided under superatmospheric pressure to the lower compartment 22 by a blower (not shown).
  • mixed particles 11 of varying weight are discharged downwardly toward the deck 16 through the discharge port 14.3.
  • the stream of air entering the upper compartment 14 through the port 22.2 passes transversely through the falling particles, and entrains dust, dirt, chafi, or other very light particulate material 11.1 and discharges the same through the overhead exhaust port 14.1 in the upper compartment.
  • the force of the air stream flowing through the port 22.2 serves also to transport lighter particles 11.2 downstream in the general direction of the lower vertex 16.8 of the deck, thereby serving to preliminarily separate the lighter particles from the falling particle stream before the particles are subjected to separation induced by the vibrating deck.
  • the particles of intermediate weight 11.3 are conveyed downstream only a short distance, and particles of greater weight 11.4 are relatively uneffected, the latter particles being deposited adjacent the rear vertex 16.4 of the deck.
  • the lighter particles 11.2 are largely prevented from becoming intermixed with the heavier particles on the deck adjacent the deck edge 16.2, thereby avoiding the relatively large amount of time previously necessary to permit such lighter particles to advance across the deck (generally to the left in FIG. 2) toward the edge 16.3.
  • the side-to-side and up and down oscillation of the deck causes the heavier particles to move generally towards elevated sections of the deck, and hence the heavier particles 11.4 move to the right of the deck as viewed in FIG. 2.
  • the light particles 11.2 are urged by the force of gravity to move along the sloping deck towards the lower deck vertex 16.8.
  • the particles of intermediate weight 11.3 travel across the deck intermediate the rearwardly converging deck edges toward the front-facing edge 16.1. Separation between particles of different weights is accomplished rapidly and efficiently.
  • the particles appearing in FIGS. 2 and 3 are shown as being divided as to size with small, medium and large particles in the drawing corresponding to light, medium and heavy particles in use. It may be noted that this correspondence in size and weight is appropriate when particles of the same density are being separated, such as plastic spheres or the like.
  • means for automatically recycling the sized particles collected in one or more of the hopper compartments may be provided to enable more exact separations to be made.
  • the previously employed deck was trapezoidal in shape to accord the heavier particles a long path length on the deck, this path length being normally required to enable the lighter particles to separate themselves from the heavier particles for eventual movement in a long path toward the lower corner of the deck.
  • separation of the lighter particles from the heavier particles thus required a considerable amount of time, and limited the capacity of the separator.
  • the present deck has been made gen erally triangular in shape since the long path previously accorded the heavy particles is generally unnecessary.
  • the present invention not only achieves a very satisfactory separation of particles, but achieves this result in far less time, thereby resulting in increased separator capacity.
  • separator having generally triangular shaped deck and means permitting the preliminary separation of lighter particles, the separator providing significantly increased throughput of particulate material for its size in comparison to prior art separators.
  • a high capacity gravity separator for separating particulate material as to weight and comprising a stationary base; a substantially triangular deck mounted for side-to-side and up and down oscillation on the base and having a front edge from which separated particles are received and two side edges forming with the front edge respective side vertices and converging rearwardly to form a rear vertex the deck sloping gently downwardly from the rear vertex to the front edge and from one side vertex to the other; a discharge port spaced above the deck for dropping a stream of particles toward the deck adjacent the rear vertex; and air flow means for directing a stream of air transversely through the falling particle stream and toward the lower vertex to cause lighter particles to separate from the falling particle stream and to be preferentially conveyed by the air stream toward the lower deck vertex, whereby the separation on the deck of lighter particles from the remaining particles is largely avoided.
  • the separator of claim 1 including an upper compartment having the deck as its lower wall and including an exhaust port generally above and downstream with respect to the air stream for exhausting very light particles which are entrained by the air stream passing through the falling stream of particles.
  • the separator of claim 3 including an air duct communicating the lower and upper compartments, the air duct having an upper end directed inwardly of the upper compartment below the discharge port for directing said stream of air through the falling stream of particles.
  • a high capacity gravity separator for separating particulate matter as to weight and comprising a stationary base; a substantially triangular, perforate deck mounted for side-to-side and up and down oscillation on the base, the deck having a front edge from which separated particles are received and two substantially straight side edges forming, with the front edge, respective side vertices, the side edges converging rearwardly to form therebetween a rear vertex and having walls arising therefrom, the deck sloping gently from the rear vertex to the front edge and from one side vertex to the other; upper and lower compartments having an exhaust port with an exhaust fan for drawing air from that compartment to produce a pressure differential across the deck and to cause air from the lower compartment to pass upwardly through the perforate deck; a particle discharge port within the upper compartment and spaced above the deck to drop unseparated particles toward the deck adjacent its rear vertex; and an air duct communicating the lower and upper compartments and having an upper end directed inwardly of the upper compartment to direct an air stream transversely through the falling particles toward

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
US481534A 1974-06-21 1974-06-21 Gravity separator Expired - Lifetime US3888352A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US481534A US3888352A (en) 1974-06-21 1974-06-21 Gravity separator
CH789775A CH598874A5 (ja) 1974-06-21 1975-06-18
FR7519423A FR2275241A1 (fr) 1974-06-21 1975-06-20 Separateur par gravite de grande capacite
IT24608/75A IT1039173B (it) 1974-06-21 1975-06-20 Sparatore a gravita di alta capa cita per separare materiale in grani secondo il peso
CA229,794A CA1008017A (en) 1974-06-21 1975-06-20 Gravity stratifier with fluid suspension assist at feed chute
JP50075424A JPS5133351A (en) 1974-06-21 1975-06-20 Koyoryojuryokubunriki
GB26328/75A GB1490280A (en) 1974-06-21 1975-06-20 Gravity separator for separating particulate material
DE19752527697 DE2527697A1 (de) 1974-06-21 1975-06-21 Schwerkraftseparator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481534A US3888352A (en) 1974-06-21 1974-06-21 Gravity separator

Publications (1)

Publication Number Publication Date
US3888352A true US3888352A (en) 1975-06-10

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Application Number Title Priority Date Filing Date
US481534A Expired - Lifetime US3888352A (en) 1974-06-21 1974-06-21 Gravity separator

Country Status (8)

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US (1) US3888352A (ja)
JP (1) JPS5133351A (ja)
CA (1) CA1008017A (ja)
CH (1) CH598874A5 (ja)
DE (1) DE2527697A1 (ja)
FR (1) FR2275241A1 (ja)
GB (1) GB1490280A (ja)
IT (1) IT1039173B (ja)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387019A (en) * 1982-01-05 1983-06-07 Reynolds Metals Company Aluminum can reclamation method
US4804463A (en) * 1986-03-07 1989-02-14 Forsbergs, Inc. Gravity separator
US5024334A (en) * 1989-06-09 1991-06-18 Iowa State University Research Foundation, Inc. Method and means for gravity table automation
US5106487A (en) * 1989-07-26 1992-04-21 Inter-Source Recovery Systems, Inc. Parts separator device for separating heavy materials from chips and lubricants
EP0504747A2 (de) * 1991-03-22 1992-09-23 Alb. Klein GmbH & Co. KG Verfahren und Vorrichtung zum Sichten von Sand od. dgl. Rieselgut
US6758342B1 (en) * 2000-04-04 2004-07-06 Harada Sangyo Co., Ltd. Cereal grain sorting system and roll sorting machine
US20050055736A1 (en) * 2003-09-04 2005-03-10 Charles Hepfner Method and Apparatus for Separating Oil Seeds
US20070023327A1 (en) * 2003-05-18 2007-02-01 Gongmin Li Dry separating table, a separator and equipment for the compound dry separation with this table
US20080078699A1 (en) * 2006-09-29 2008-04-03 M-I Llc Shaker and degasser combination
CN106216244A (zh) * 2016-09-14 2016-12-14 邓新平 吸风比重筛和吹风比重筛组合式谷物精选机
CN107493842A (zh) * 2017-09-21 2017-12-22 东北农业大学 垂直振动与水平回转组合式玉米籽粒清选机
US9968944B2 (en) 2013-03-15 2018-05-15 Inter-Source Recovery Systems Parts separator
US10081994B2 (en) 2015-01-30 2018-09-25 Fp Marangoni Inc. Screened enclosure with vacuum ports for use in a vacuum-based drilling fluid recovery system
WO2023133391A1 (en) * 2022-01-06 2023-07-13 Radcat Research, Llc Heavy mineral harvesting methods and systems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2281174A (en) * 1939-03-07 1942-04-28 Oliver W Steele Material sizing mechanism
US2764293A (en) * 1952-12-03 1956-09-25 Arthur R Forsberg High speed vacuum separator
US2828011A (en) * 1953-03-04 1958-03-25 Superior Separator Company Stratifier and air separator
US3291301A (en) * 1963-10-28 1966-12-13 Gen Mills Inc Classifying apparatus and process
US3530987A (en) * 1968-07-29 1970-09-29 Robert A Kipp Air flotation separator
US3807554A (en) * 1973-03-16 1974-04-30 T Satake Device for sorting grain

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2281174A (en) * 1939-03-07 1942-04-28 Oliver W Steele Material sizing mechanism
US2764293A (en) * 1952-12-03 1956-09-25 Arthur R Forsberg High speed vacuum separator
US2828011A (en) * 1953-03-04 1958-03-25 Superior Separator Company Stratifier and air separator
US3291301A (en) * 1963-10-28 1966-12-13 Gen Mills Inc Classifying apparatus and process
US3530987A (en) * 1968-07-29 1970-09-29 Robert A Kipp Air flotation separator
US3807554A (en) * 1973-03-16 1974-04-30 T Satake Device for sorting grain

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387019A (en) * 1982-01-05 1983-06-07 Reynolds Metals Company Aluminum can reclamation method
US4804463A (en) * 1986-03-07 1989-02-14 Forsbergs, Inc. Gravity separator
US5024334A (en) * 1989-06-09 1991-06-18 Iowa State University Research Foundation, Inc. Method and means for gravity table automation
US5106487A (en) * 1989-07-26 1992-04-21 Inter-Source Recovery Systems, Inc. Parts separator device for separating heavy materials from chips and lubricants
EP0504747A2 (de) * 1991-03-22 1992-09-23 Alb. Klein GmbH & Co. KG Verfahren und Vorrichtung zum Sichten von Sand od. dgl. Rieselgut
EP0504747A3 (en) * 1991-03-22 1993-09-08 Alb. Klein Gmbh & Co. Kg Method and device for sifting sand or similar free-flowing material
US6758342B1 (en) * 2000-04-04 2004-07-06 Harada Sangyo Co., Ltd. Cereal grain sorting system and roll sorting machine
US7708145B2 (en) * 2003-05-18 2010-05-04 Tangshan Shenzhou Machinery Co., Ltd. Dry separating table, a separator and equipment for the compound dry separation with this table
US20070023327A1 (en) * 2003-05-18 2007-02-01 Gongmin Li Dry separating table, a separator and equipment for the compound dry separation with this table
US20050055736A1 (en) * 2003-09-04 2005-03-10 Charles Hepfner Method and Apparatus for Separating Oil Seeds
US20140339178A1 (en) * 2006-09-29 2014-11-20 M-I, Llc Shaker and degasser combination
US10094183B2 (en) 2006-09-29 2018-10-09 M-I L.L.C. Shaker and degasser combination
US20080078699A1 (en) * 2006-09-29 2008-04-03 M-I Llc Shaker and degasser combination
US9004288B2 (en) 2006-09-29 2015-04-14 M-I L.L.C. Shaker and degasser combination
US9074440B2 (en) * 2006-09-29 2015-07-07 M-I L.L.C. Shaker and degasser combination
US9512687B2 (en) 2006-09-29 2016-12-06 M-I L.L.C. Shaker and degasser combination
US11591866B2 (en) 2006-09-29 2023-02-28 M-I L.L.C. Shaker and degasser combination
US10808475B2 (en) * 2006-09-29 2020-10-20 M-I L.L.C. Shaker and degasser combination
US20180371856A1 (en) * 2006-09-29 2018-12-27 M-I L.L.C. Shaker and degasser combination
US8613360B2 (en) * 2006-09-29 2013-12-24 M-I L.L.C. Shaker and degasser combination
US9968944B2 (en) 2013-03-15 2018-05-15 Inter-Source Recovery Systems Parts separator
US10081994B2 (en) 2015-01-30 2018-09-25 Fp Marangoni Inc. Screened enclosure with vacuum ports for use in a vacuum-based drilling fluid recovery system
CN106216244B (zh) * 2016-09-14 2018-04-13 邓新平 吸风比重筛和吹风比重筛组合式谷物精选机
CN106216244A (zh) * 2016-09-14 2016-12-14 邓新平 吸风比重筛和吹风比重筛组合式谷物精选机
CN107493842A (zh) * 2017-09-21 2017-12-22 东北农业大学 垂直振动与水平回转组合式玉米籽粒清选机
WO2023133391A1 (en) * 2022-01-06 2023-07-13 Radcat Research, Llc Heavy mineral harvesting methods and systems

Also Published As

Publication number Publication date
IT1039173B (it) 1979-12-10
JPS5133351A (en) 1976-03-22
CH598874A5 (ja) 1978-05-12
DE2527697A1 (de) 1976-01-08
JPS5416065B2 (ja) 1979-06-19
GB1490280A (en) 1977-10-26
CA1008017A (en) 1977-04-05
FR2275241B1 (ja) 1979-10-19
FR2275241A1 (fr) 1976-01-16

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