WO1992016289A1 - Treatment of particulate material - Google Patents

Treatment of particulate material Download PDF

Info

Publication number
WO1992016289A1
WO1992016289A1 PCT/GB1992/000434 GB9200434W WO9216289A1 WO 1992016289 A1 WO1992016289 A1 WO 1992016289A1 GB 9200434 W GB9200434 W GB 9200434W WO 9216289 A1 WO9216289 A1 WO 9216289A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel member
particulate material
region
channel
liquid
Prior art date
Application number
PCT/GB1992/000434
Other languages
French (fr)
Inventor
Clifford Samuel Treadwell
Original Assignee
Holton Machinery Limited
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 Holton Machinery Limited filed Critical Holton Machinery Limited
Publication of WO1992016289A1 publication Critical patent/WO1992016289A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • B65G49/02—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid
    • B65G49/04—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
    • B65G49/0409—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length
    • B65G49/0413—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath
    • B65G49/0427—Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction specially adapted for workpieces of definite length arrangements for conveyance through the bath jigging conveyors
    • 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
    • B01D11/0215—Solid material in other stationary receptacles
    • B01D11/0223—Moving bed of solid material
    • 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
    • B01D11/0261—Solvent extraction of solids comprising vibrating mechanisms, e.g. mechanical, acoustical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/16—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with particles being subjected to vibrations or pulsations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work
    • B08B3/042—Cleaning travelling work the loose articles or bulk material travelling gradually through a drum or other container, e.g. by helix or gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/19—Details relating to the geometry of the reactor
    • B01J2219/194—Details relating to the geometry of the reactor round
    • B01J2219/1941—Details relating to the geometry of the reactor round circular or disk-shaped
    • B01J2219/1944—Details relating to the geometry of the reactor round circular or disk-shaped spiral

Definitions

  • This invention relates to a method of, and apparatus for, treating a particulate material with liquid.
  • a particular, but not sole, application of the invention is to a method of, and apparatus for, washing of metal powders, such as copper powder.
  • Metal powder such as copper powder, contains a number of contaminants, such as oxides and the like.
  • the particulate material in a method of treating particulate material, is caused by- vibration to move along a channel member arranged in a helical manner on a vertical column from an input region of the channel member to a discharge region thereof which is at a higher level than the input region and liquid to treat the particulate material flows along the channel member in the direction towards the input region thereof.
  • the liquid can flow, due to gravity, down the channel member towards the input region thereof in counterflow to the direction of movement of the particulate material.
  • the particulate material which is moving forwardly along the channel member in the direction towards the discharge region thereof, is thoroughly contacted by the liquid, which is flowing in the opposite direction thereto, so that the liquid can treat the particulate material.
  • the time taken for the particulate material to move along the channel member from the input region to the discharge region may not be sufficient to adequately treat the particulate material with the liquid and so it is convenient for the particulate material to be caused to move, in turn, along a multiplicity of channel members arranged in a helical manner on the column and each channel member has liquid flowing along it towards its input region.
  • the time during which the particulate material is in contact with liquid is increased. It is convenient to collect the liquid which flows along each channel member adjacent to the input region of the channel member so that different liquids can flow along different channel members thereby providing different treatment for the particulate material during its passage along the channel members.
  • the particulate material On each of the channel members the particulate material is moving upwardly in the opposite direction to the liquid which is flowing down the channel member.
  • apparatus comprises a vertical column structure; a channel member mounted in a helical manner on the column structure; means for introducing particulate material on to an input region of the channel member; means for vibrating the channel member to cause said particulate material to move along the channel member to a discharge region thereof, which is at a higher level than the input region; means for introducing liquid to the channel member adjacent the discharge region and means for collecting liquid adjacent the input region of the channel member.
  • the vertical column with the channel member mounted on it is subjected to vibration which has a vertical component and a radial component and this causes the particulate material to move along the channel member from the input region to the discharge region, which is at a higher level than the input region.
  • the liquid is introduced into the channel member adjacent the discharge region so that it contacts the particulate material as the particulate material moves along the length of the channel member.
  • the liquid is collected adjacent the input region of the channel member.
  • the first factor is the amplitude of the vibrations applied to the channel member and the column structure and the ratio of the vertical component and the radial component so as to govern the rate of travel of the particulate material up the channel member.
  • the second factor is the rate at which the particulate material is introduced on to the input region of the channel member, i.e., the thickness of the layer of the particulate material on the channel member; and the third factor is the quantity of liquid which is allowed to flow down the channel member.
  • a multiplicity of channel members it is convenient for a multiplicity of channel members to be mounted in a helical manner on the column structure in substantially end-to-end relation and wherein, except for the uppermost channel member, the discharge region of each of the other channel members to overlie the inlet region of the adjacent channel member whereby particulate material discharged from the discharge region of each of the other channel members falls on to the inlet region of the adjacent channel member.
  • the particulate material moves along one channel member and falls from the discharge region thereof on to the inlet region of the adjacent channel member.
  • the particulate material moves along each of the multiplicity of channel members, in turn, and, by arranging for it to fall from the discharge region of one channel member to the inlet region of the adjacent channel member, it enables a liquid collection duct to be located beneath the discharge region of each channel member to collect liquid from the input region of the adjacent channel member. In this way, the liquid applied to each channel member is kept separate from the other channel members. The liquid which has been collected can be tested to determine its make-up, thereby indicating the condition of the particulate material.
  • a weir is located between each liquid collection duct and the input region of the adjacent channel member to prevent particulate material from entering into the liquid collection duct.
  • Figure 1 is a front elevation of apparatus in accordance with the present invention.
  • Figure 2 is a side elevation
  • Figure 3 is a detail of part of the apparatus; and Figure 4 is a diagrammatic view illustrating one embodiment of the method of employing the apparatus shown in Figures 1 to 3.
  • apparatus in accordance with the present invention comprises a vertical column structure 1 which includes a vertical hollow cylinder 3.
  • the column structure includes suspension units (not shown) for the hollow cylinder and a pair of vibration motors 5 are mounted on the upper end of the cylinder.
  • Mounted on the outside of the cylinder 3 are a multiplicity of channel members 7 each arranged in a helical manner on the cylinder 3.
  • the channel members are arranged in substantially end-to-end relation except that the upper end of each channel member overlies the lower end of the adjacent channel member located above it.
  • the upper end of a channel member 7A overlies the lower end of the channel 7B which is otherwise located above the channel member 7A.
  • the lowermost channel member extends upwardly from an open bowl 9 mounted at the base of the cylinder 3.
  • the upper end of the uppermost channel member leads from the cylinder to a discharge pipe 11.
  • a liquid collection duct 13 is mounted beneath the upper end of each channel member, apart from the uppermost channel member, and the duct leads to a pipe 15. Adjacent the duct 13 on the lower end of the channel member 7B there is an upstanding weir 17.
  • a nozzle 19 connected to a liquid supply pipe is located adjacent the upper end of each of the channel members.
  • the liquid supplied to the nozzles may be water, in which case the water may be supplied on a common pipe 21 with control valves 22 controlling the flow to each nozzle.
  • control valves 22 controlling the flow to each nozzle.
  • different liquids may be applied to different channel members, as will be described later.
  • a feed hopper 23 is connected via a vibratory conveyor 25 to the bowl 9.
  • particulate material to be treated is fed from the hopper 23 via the conveyor 25 into the bowl 9.
  • the vibration motors 5 are operated to apply vibration of, say, 25Hz to the vertical column supporting the channel members.
  • the vibration has a vertical component and a radial component which is greater than the vertical component and, as the channel members are arranged in a helical manner on the cylinder, the particulate material begins to move upwardly from the bowl 9 from an input region of the lowermost channel member along the channel member to the discharge region at the upper end thereof.
  • the particulate material then falls from the discharge region of the lowermost channel member on to the input region of the channel member which, apart from the input region, is above the lowermost channel member.
  • the particulate material continues to move upwardly along the second channel member and, at the upper end of this channel member, the particulate material falls from the discharge region on to the input region of the adjacent channel member. Eventually, the particulate material arrives at the top of the column and is discharged through the pipe 11.
  • a liquid to treat the particulate material is applied via the nozzles 19 to each of the channel members.
  • the liquid is applied adjacent the upper end of the channel member and flows down the channel member towards the input region thereof, i.e., in the opposite direction to the movement of the material up the channel member.
  • the apparatus has ten channel members 7 arranged on the support structure and, on each of the lowermost two channel members, the copper powder is subjected to a treatment with brine which flows into the bowl 9.
  • the next two higher channel members are each supplied with water so that the liquid discharged from these two channel members is a mixture of water and brine.
  • the next two channel members moving up the column are treated with ammonia solution and the liquid leaving these channel members is a mixture of water and ammonia.
  • the next three channel members are each supplied with water to remove all traces of ammonia from the powder and the liquid collected at the collection ducts for each of these channel members is a mixture of water and ammonia.
  • the powder on the uppermost channel member is treated with de-mineralised water. It will be seen, therefore, that, as the powder makes it way up the column structure to the outlet discharge pipe 11, it is treated successively with different liquids to remove unwanted contaminants.
  • the washed copper powder is discharged through the pipe 11.
  • the liquids which are collected from the channel members may be allowed to go to drain, but it is convenient to analyse samples of these liquids to ascertain whether or not the powder is being correctly treated as it moves up the channel members.
  • the cylinder 3 with the channel members mounted on it can be enclosed by an outer cover sealed to the discharge 11 and the conveyor 25 so that an inert or other atmosphere can be contained within the cover.
  • the hollow cylinder 3 may be 186 cm high, the outside diameter of each channel member 7 may be 68 cm and the inside diameter 53 cm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Particulate material is treated by vibrating a channel member (7) arranged in a helical manner to cause the particulate material to move up the channel member from an input region to a higher discharge region (11). Liquid (22) to treat the particulate material is caused to flow down the channel member.

Description

TREATMENT OF PARTICULATE MATERIAL
This invention relates to a method of, and apparatus for, treating a particulate material with liquid. A particular, but not sole, application of the invention is to a method of, and apparatus for, washing of metal powders, such as copper powder.
Many particulate materials which are used in industrial processes contain contaminants which should not be allowed to remain in the particulate material. Thus, some process for washing or treating the particulate material is required before it is used in an industrial process.
Metal powder, such as copper powder, contains a number of contaminants, such as oxides and the like.
According to a first aspect of the present invention, in a method of treating particulate material, the particulate material is caused by- vibration to move along a channel member arranged in a helical manner on a vertical column from an input region of the channel member to a discharge region thereof which is at a higher level than the input region and liquid to treat the particulate material flows along the channel member in the direction towards the input region thereof.
By arranging for the particulate material to move along the channel member from the input region to a discharge region, which is at a higher level than the input region, the liquid can flow, due to gravity, down the channel member towards the input region thereof in counterflow to the direction of movement of the particulate material. In this way, the particulate material, which is moving forwardly along the channel member in the direction towards the discharge region thereof, is thoroughly contacted by the liquid, which is flowing in the opposite direction thereto, so that the liquid can treat the particulate material.
The time taken for the particulate material to move along the channel member from the input region to the discharge region may not be sufficient to adequately treat the particulate material with the liquid and so it is convenient for the particulate material to be caused to move, in turn, along a multiplicity of channel members arranged in a helical manner on the column and each channel member has liquid flowing along it towards its input region. Thus, by increasing the number of channel members along which the particulate material moves, in turn, the time during which the particulate material is in contact with liquid is increased. It is convenient to collect the liquid which flows along each channel member adjacent to the input region of the channel member so that different liquids can flow along different channel members thereby providing different treatment for the particulate material during its passage along the channel members. On each of the channel members the particulate material is moving upwardly in the opposite direction to the liquid which is flowing down the channel member.
According to a second aspect of the invention, apparatus comprises a vertical column structure; a channel member mounted in a helical manner on the column structure; means for introducing particulate material on to an input region of the channel member; means for vibrating the channel member to cause said particulate material to move along the channel member to a discharge region thereof, which is at a higher level than the input region; means for introducing liquid to the channel member adjacent the discharge region and means for collecting liquid adjacent the input region of the channel member.
The vertical column with the channel member mounted on it is subjected to vibration which has a vertical component and a radial component and this causes the particulate material to move along the channel member from the input region to the discharge region, which is at a higher level than the input region.
The liquid is introduced into the channel member adjacent the discharge region so that it contacts the particulate material as the particulate material moves along the length of the channel member. The liquid is collected adjacent the input region of the channel member.
Three factors influence the efficiency of the treatment process. The first factor is the amplitude of the vibrations applied to the channel member and the column structure and the ratio of the vertical component and the radial component so as to govern the rate of travel of the particulate material up the channel member. The second factor is the rate at which the particulate material is introduced on to the input region of the channel member, i.e., the thickness of the layer of the particulate material on the channel member; and the third factor is the quantity of liquid which is allowed to flow down the channel member. It is convenient for a multiplicity of channel members to be mounted in a helical manner on the column structure in substantially end-to-end relation and wherein, except for the uppermost channel member, the discharge region of each of the other channel members to overlie the inlet region of the adjacent channel member whereby particulate material discharged from the discharge region of each of the other channel members falls on to the inlet region of the adjacent channel member. With this construction, the particulate material moves along one channel member and falls from the discharge region thereof on to the inlet region of the adjacent channel member. The particulate material moves along each of the multiplicity of channel members, in turn, and, by arranging for it to fall from the discharge region of one channel member to the inlet region of the adjacent channel member, it enables a liquid collection duct to be located beneath the discharge region of each channel member to collect liquid from the input region of the adjacent channel member. In this way, the liquid applied to each channel member is kept separate from the other channel members. The liquid which has been collected can be tested to determine its make-up, thereby indicating the condition of the particulate material.
A weir is located between each liquid collection duct and the input region of the adjacent channel member to prevent particulate material from entering into the liquid collection duct.
In order that the invention may be more readily understood, it will now be described, by way of example only, with reference to the accompanying drawings, in which:-
Figure 1 is a front elevation of apparatus in accordance with the present invention;
Figure 2 is a side elevation;
Figure 3 is a detail of part of the apparatus; and Figure 4 is a diagrammatic view illustrating one embodiment of the method of employing the apparatus shown in Figures 1 to 3.
Referring particularly to Figures 1 and 2, apparatus in accordance with the present invention comprises a vertical column structure 1 which includes a vertical hollow cylinder 3. The column structure includes suspension units (not shown) for the hollow cylinder and a pair of vibration motors 5 are mounted on the upper end of the cylinder. Mounted on the outside of the cylinder 3 are a multiplicity of channel members 7 each arranged in a helical manner on the cylinder 3. The channel members are arranged in substantially end-to-end relation except that the upper end of each channel member overlies the lower end of the adjacent channel member located above it. As can be seen in more detail in Figures 1 and 3, the upper end of a channel member 7A overlies the lower end of the channel 7B which is otherwise located above the channel member 7A.
The lowermost channel member extends upwardly from an open bowl 9 mounted at the base of the cylinder 3. The upper end of the uppermost channel member leads from the cylinder to a discharge pipe 11.
As can be seen in more detail in Figure 3, a liquid collection duct 13 is mounted beneath the upper end of each channel member, apart from the uppermost channel member, and the duct leads to a pipe 15. Adjacent the duct 13 on the lower end of the channel member 7B there is an upstanding weir 17.
A nozzle 19 connected to a liquid supply pipe is located adjacent the upper end of each of the channel members. The liquid supplied to the nozzles may be water, in which case the water may be supplied on a common pipe 21 with control valves 22 controlling the flow to each nozzle. On the other hand, different liquids may be applied to different channel members, as will be described later.
A feed hopper 23 is connected via a vibratory conveyor 25 to the bowl 9.
In use, particulate material to be treated is fed from the hopper 23 via the conveyor 25 into the bowl 9. The vibration motors 5 are operated to apply vibration of, say, 25Hz to the vertical column supporting the channel members. The vibration has a vertical component and a radial component which is greater than the vertical component and, as the channel members are arranged in a helical manner on the cylinder, the particulate material begins to move upwardly from the bowl 9 from an input region of the lowermost channel member along the channel member to the discharge region at the upper end thereof. The particulate material then falls from the discharge region of the lowermost channel member on to the input region of the channel member which, apart from the input region, is above the lowermost channel member. The particulate material continues to move upwardly along the second channel member and, at the upper end of this channel member, the particulate material falls from the discharge region on to the input region of the adjacent channel member. Eventually, the particulate material arrives at the top of the column and is discharged through the pipe 11.
A liquid to treat the particulate material is applied via the nozzles 19 to each of the channel members. The liquid is applied adjacent the upper end of the channel member and flows down the channel member towards the input region thereof, i.e., in the opposite direction to the movement of the material up the channel member.
Again, referring to Figure 3, it will be appreciated that liquid flowing down the channel member 7B builds up against the weir 17 until sufficient liquid is present for it to flow over the weir into the duct 13 and out of the pipe 15. The weir prevents the particulate material from entering the duct 13.
Referring now to Figure 4, a particular arrangement is shown for treating copper powder in order to remove contaminants. The apparatus has ten channel members 7 arranged on the support structure and, on each of the lowermost two channel members, the copper powder is subjected to a treatment with brine which flows into the bowl 9. The next two higher channel members are each supplied with water so that the liquid discharged from these two channel members is a mixture of water and brine. The next two channel members moving up the column are treated with ammonia solution and the liquid leaving these channel members is a mixture of water and ammonia. The next three channel members are each supplied with water to remove all traces of ammonia from the powder and the liquid collected at the collection ducts for each of these channel members is a mixture of water and ammonia. Finally, the powder on the uppermost channel member is treated with de-mineralised water. It will be seen, therefore, that, as the powder makes it way up the column structure to the outlet discharge pipe 11, it is treated successively with different liquids to remove unwanted contaminants. The washed copper powder is discharged through the pipe 11. The liquids which are collected from the channel members may be allowed to go to drain, but it is convenient to analyse samples of these liquids to ascertain whether or not the powder is being correctly treated as it moves up the channel members.
If required, the cylinder 3 with the channel members mounted on it can be enclosed by an outer cover sealed to the discharge 11 and the conveyor 25 so that an inert or other atmosphere can be contained within the cover.
In a practical embodiment of the invention, referred to here by way of example only, the hollow cylinder 3 may be 186 cm high, the outside diameter of each channel member 7 may be 68 cm and the inside diameter 53 cm.

Claims

Claims :
1. Apparatus comprising a vertical column structure (1); a channel member (7) mounted in a helical manner on the column structure; means (9) for introducing particulate material on to an input region of the channel member; means (5) for vibrating the channel member to cause said particulate material to move along the channel member to a discharge region (11) thereof, which is at a higher level than the input region; means (22) for introducing liquid to the channel member adjacent the discharge region and means (13, 15) for collecting liquid adjacent the input region of the channel member.
2. Apparatus as claimed in claim 1, wherein two channel members are mounted in a helical manner on the column structure in substantially end-to-end relation, except that the discharge region of the lowermost channel member overlies the inlet region of the uppermost channel member, whereby particulate material discharged from the discharge region of the lowermost channel member falls on to the input region of the other channel member.
3. Apparatus as claimed in claim 1, wherein a multiplicity of channel members are mounted in a helical manner on the column structure in substantially end-to-end relation and wherein, except for the uppermost channel member, the discharge region of each of the other channel members overlies the inlet region of the adjacent channel member whereby particulate material discharged from the discharge region of each of the other channel members falls on to the inlet region of the adjacent channel member.
4. Apparatus as claimed in claim 3, wherein, except for the uppermost channel member, a liquid collection duct is located beneath the discharge region of each channel member to collect liquid from the input region of the adjacent channel member.
5. Apparatus as claimed in claim 1, wherein a weir is located between each liquid collection duct and the input region of the adjacent channel member to prevent particulate material from entering into the liquid collection duct.
6. Apparatus as claimed in any preceding claim in which the column structure and the or each channel member are enclosed in a housing into which a chosen gaseous atmosphere may be supplied.
7. A method of treating particulate material in which the particulate material is caused by vibration to move along a channel member arranged i_. a helical manner on a vertical column from an input region of the channel member to a discharge region thereof which is at a higher level than the input region and liquid to treat the particulate material flows along the channel member in the direction towards the input region thereof.
8. A method as claimed in claim 7, wherein the particulate material is caused to move, in turn, along a multiplicity of channel members arranged in a helical manner on the column, each channel member has liquid flowing along it towards its input region and the liquid flowing along each channel member is collected adjacent the input region of the channel member.
9. A method as claimed in claim 8, wherein different liquids flow along different channel members.
10. A method as claimed in any of the claims 7, 8 or 9, in which the particulate material is copper powder.
PCT/GB1992/000434 1991-03-12 1992-03-11 Treatment of particulate material WO1992016289A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919105146A GB9105146D0 (en) 1991-03-12 1991-03-12 Treatment of particulate material
GB9105146.6 1991-03-12

Publications (1)

Publication Number Publication Date
WO1992016289A1 true WO1992016289A1 (en) 1992-10-01

Family

ID=10691380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/000434 WO1992016289A1 (en) 1991-03-12 1992-03-11 Treatment of particulate material

Country Status (4)

Country Link
AU (1) AU1377292A (en)
GB (1) GB9105146D0 (en)
MX (1) MX9201087A (en)
WO (1) WO1992016289A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744066A (en) * 1953-06-04 1956-05-01 Nat Dairy Res Lab Inc Ion exchange method and apparatus for continuous inter-action of liquids and solids
FR1201213A (en) * 1957-08-30 1959-12-29 Surface treatment facility
SU475419A1 (en) * 1973-10-22 1975-06-30 Государственный научно-исследовательский институт цветных металлов The method of washing the copper powder
US4022638A (en) * 1975-08-05 1977-05-10 Dart Industries Inc. Continuous recovery of base metal from insulated wire scrap
US4063564A (en) * 1976-08-30 1977-12-20 Francis Theodore R Vibratory cleaning and coating system
DE3008720A1 (en) * 1980-03-07 1982-02-25 Bottroper Stahlbau Fischedick Gmbh & Co Kg, 4250 Bottrop Waste concrete salvage system - has spiral upwards conveyor actuated by eccentric weights with double sieve bottom
DE3931027A1 (en) * 1988-09-21 1990-03-22 Cew Industrieberatung Arrangement to carry out technical processes - with spiral conveyor with column and outer housing having roof cover

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744066A (en) * 1953-06-04 1956-05-01 Nat Dairy Res Lab Inc Ion exchange method and apparatus for continuous inter-action of liquids and solids
FR1201213A (en) * 1957-08-30 1959-12-29 Surface treatment facility
SU475419A1 (en) * 1973-10-22 1975-06-30 Государственный научно-исследовательский институт цветных металлов The method of washing the copper powder
US4022638A (en) * 1975-08-05 1977-05-10 Dart Industries Inc. Continuous recovery of base metal from insulated wire scrap
US4063564A (en) * 1976-08-30 1977-12-20 Francis Theodore R Vibratory cleaning and coating system
DE3008720A1 (en) * 1980-03-07 1982-02-25 Bottroper Stahlbau Fischedick Gmbh & Co Kg, 4250 Bottrop Waste concrete salvage system - has spiral upwards conveyor actuated by eccentric weights with double sieve bottom
DE3931027A1 (en) * 1988-09-21 1990-03-22 Cew Industrieberatung Arrangement to carry out technical processes - with spiral conveyor with column and outer housing having roof cover

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section Ch, Week X14, 12 May 1976 Derwent Publications Ltd., London, GB; Class M, AN 25883X/14 & SU,A,475 419 (NON FERR METAL RES) 12 September 1975 *

Also Published As

Publication number Publication date
GB9105146D0 (en) 1991-04-24
AU1377292A (en) 1992-10-21
MX9201087A (en) 1992-09-01

Similar Documents

Publication Publication Date Title
CN1057944C (en) Apparatus for washing and drying discrete parts
US4533367A (en) Gas scrubbing method using gas liquid contact in a particulate bed
AU612759B2 (en) Process and device for separating mixed grain
JPS631906B2 (en)
EP0057945B1 (en) Column for treating gases
SU516415A1 (en) Continuous adsorber
US4300921A (en) Apparatus and method for removing finely divided solids from gases
WO1992016289A1 (en) Treatment of particulate material
US3216431A (en) Vibratory conveyor with multiple track and turn-out
EP1091897A1 (en) Liquid transport of solid material
US5373946A (en) System for media separation of solid particles
AU598886B2 (en) Particle feeding apparatus
DE869938C (en) Method and device for cleaning and drying compressed gases
EP0093264A2 (en) Method and apparatus for cleaning metallic fines
US4075104A (en) Device for separating in a continuous process particles from a first liquid and introducing the separated particles into a second liquid
EP0837727B1 (en) An apparatus for cyrrying out a counter flow process
US4184965A (en) Vibro-acoustical extraction apparatus
US458823A (en) Amalgamator
SU886932A1 (en) Mass exchange apparatus
RU216760U1 (en) Sorption filter for water purification
EP1015392A1 (en) Method and device for separating sludge-like material using a stream of finely divided air bubbles
CA1240918A (en) Perforated trough conditioning device
JPH04231482A (en) Apparatus for treating three-dimensional work with liquid
JPH08176654A (en) Device for removing sludge in fused salt bath liquid
SU1028344A1 (en) Apparatus for adsorption separation of multicomponent liquid mixtures by moving adsorbents

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU GB

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE