WO2008010175A2 - Air distributor for heap leaching process - Google Patents

Air distributor for heap leaching process Download PDF

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Publication number
WO2008010175A2
WO2008010175A2 PCT/IB2007/052814 IB2007052814W WO2008010175A2 WO 2008010175 A2 WO2008010175 A2 WO 2008010175A2 IB 2007052814 W IB2007052814 W IB 2007052814W WO 2008010175 A2 WO2008010175 A2 WO 2008010175A2
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
air distributor
apertures
indentation
heap
Prior art date
Application number
PCT/IB2007/052814
Other languages
French (fr)
Other versions
WO2008010175B1 (en
WO2008010175A3 (en
Inventor
Alan Eric Norton
Jeffrey Todd Harvey
Michael John Gunn
Original Assignee
Geobiotics Llc
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 Geobiotics Llc filed Critical Geobiotics Llc
Publication of WO2008010175A2 publication Critical patent/WO2008010175A2/en
Publication of WO2008010175A3 publication Critical patent/WO2008010175A3/en
Publication of WO2008010175B1 publication Critical patent/WO2008010175B1/en

Links

Classifications

    • 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
    • B01J4/00—Feed or outlet devices; Feed or outlet control devices
    • B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23121—Diffusers having injection means, e.g. nozzles with circumferential outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • B01F23/231231—Diffusers consisting of rigid porous or perforated material the outlets being in the form of perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/23127—Screens, nets, grades or grids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23128—Diffusers having specific properties or elements attached thereto
    • B01F23/231283—Diffusers having specific properties or elements attached thereto having elements to protect the parts of the diffusers, e.g. from clogging when not in use
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/02—Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention relates to an air distributor (1) for a bio-assisted heap leaching system which comprises a pipe having a series of apertures through the wall of the pipe, with the series of apertures (3) configured operatively to face downwards, and to be located in an indentation (2) in the outer wall of the pipe. The invention also extends to a heap leaching system, method of forming a bio-assisted heap leaching system, and a method of bio- assisted leaching of a heap which utilizes such an air distributor.

Description

AIR DISTRIBUTOR FOR HEAP LEACHING PROCESS
FIELD OF THE INVENTION
This invention relates to the addition of air into heap leaching operations.
BACKGROUND TO THE INVENTION
Air is typically introduced to heap leaching operations, specifically bio-assisted heap leaching operations, by means of an array of pipes perforated with holes of pre-determined diameter at predetermined intervals. These air pipes are usually placed in a rock drainage layer beneath the heap.
A problem with such a prior art system is that random alignment of rock in the drain layer adjacent the air holes may block a hole or restrict flow of air from the hole. Furthermore, the leach solution may flow over the pipe near or over the holes and/or rock proximate the holes. Since the environment near each hole is evaporative due to the inflow of air into the drainage layer, precipitates may form because of evaporation of water and such precipitates may block the holes.
Patent application WO 03/042604 discloses an air distributor pipe which comprises a perforated pipe and a protective pipe around it, or a series of saddles or pipe section covering each hole in the pipe.
A problem with this air distributor is that it has two components, and consequently requires more time to install and is more expensive. Another problem with previous air pipe configurations was that if the air blower, which blows air into the pipes, shuts off, there is an increased risk of flooding the pipes with solution flowing down through the heap. Once a pipe has been flooded it is very difficult, if not impossible, to clear it without removing it from the heap.
In this specification, the term "heap" comprises any body of rock or minerals which is subjected to a leaching process to recover metals therefrom.
The term "dry-shadow" refers to the area underneath a pipe that remains substantially dry despite the flow of solution down through the heap. The size of the dry shadow depends on a number of factors, including the diameter of the pipe, the hydraulic conductivity of the drain material in the heap, and the amount of solution passed down through the heap.
OBJECT OF THE INVENTION
It is an object of the invention to provide an air distributor for heap leaching operations which at least partly overcomes the abovementioned problem.
SUMMARY OF THE INVENTION
In accordance with this invention there is provided an air distributor for a bio-assisted heap leaching process comprising a pipe having a series of apertures through the wall of the pipe, and for at least one aperture to be located in an indentation in the outer wall of the pipe.
There is further provided for the pipe to include a continuous indentation, preferably for all the apertures to be located in the continuous indentation, and more preferably for the continuous indentation to extend longitudinally along the outer wall of the pipe.
According to a further feature of the invention there is provided for the pipe to include an endless circumferential indentation, preferably for a plurality of endless circumferential indentations to be spaced apart along the pipe, alternatively for the pipe to include a helical indentation, and for a plurality of apertures to be located in the circumferential indentations.
There is further provided for the air distributor to include a perforated cover over each aperture, and preferably for a single cover over the continuous indentation and circumferential indentations respectively. There is still further provided for the air distributor to be configured for the series of apertures to operatively face downwards in a heap, preferably in the dry-shadow of the pipe.
According to an alternative feature of the invention there is provided an air distributor for a bio-assisted heap leaching process comprising a pipe having a series of apertures through the wall of the pipe, and for the series of apertures to be configured operatively to face downwards in a heap, preferably in the dry-shadow of the pipe.
There is further provided for the heap leaching operation to comprise a bio-assisted heap leaching operation.
There is yet still further provided for the air distributor to include a series of apertures which extend longitudinally along the pipe in a line which is orientated between about 0° and 45° degrees from the vertical along the circumference of the pipe.
There is also provided for the air distributor which includes the endless circumferential indentation to include two apertures spaced apart by between about 0° and 45 " degrees from the vertical along the circumference of the pipe, and for each of these apertures to be part of a series of apertures which extend longitudinally along the pipe in a line which is orientated between about 0° and 45 " degrees from the vertical along the circumference of the pipe.
There is still further provided for the invention to extend to a bio-assisted heap leaching system which includes an air distributor as defined above, a method of forming a bio-assisted heap leaching system which includes installing an air distributor as defined above in the heap, and a method of bio-assisted leaching of a heap which includes the step of introducing air into the heap through an air distributor as defined above.
BRIEF DESCRIPTION OF THE DRAWINGS
Embodiments of the invention are described by way of example only and with reference to the accompanying drawings in which:
Figure 1 A is a perspective view of a first embodiment of an air distributor pipe according to the invention which includes a continuous longitudinal semi circular indentation within which a plurality of apertures is located; Figure 1 B is an end view of the pipe of Figure 1 A; Figure 1 C is a bottom plan view of the pipe of Figure 1 A;
Figure 2A is a perspective view of a second embodiment of an air distributor pipe according to the invention which includes a plurality of longitudinally arranged smooth indentations within each of which an aperture is located; Figure 2B is an end view of the pipe of Figure 2A;
Figure 2C is a bottom plan view of the pipe of Figure 2A;
Figure 3A is a perspective view of a third embodiment of an air distributor pipe according to the invention which includes a continuous longitudinal rectangular indentation within which a plurality of apertures is located; Figure 3B is an end view of the pipe of Figure 3A;
Figure 3C is a bottom plan view of the pipe of Figure 3A;
Figure 4A is a perspective view of a fourth embodiment of an air distributor pipe according to the invention which includes a plurality of longitudinally arranged rectangular indentations within each of which an aperture is located; Figure 4B is an end view of the pipe of Figure 4A;
Figure 4C is a bottom plan view of the pipe of Figure 4A;
Figure 5A is a perspective view of a fifth embodiment of an air distributor pipe according to the invention which includes a continuous longitudinal V-shaped indentation within which a plurality of apertures is located; Figure 5B is an end view of the pipe of Figure 5A;
Figure 5C is a bottom plan view of the pipe of Figure 5A;
Figure 6A is a perspective view of a sixth embodiment of an air distributor pipe according to the invention, shown upside down for the sake of clarity, which includes a plurality of longitudinally arranged indentations of different shapes within each of which an aperture is located;
Figure 6B is and end view of the pipe of Figure 6A, also shown upside down;
Figure 6C is a bottom plan view of the pipe of Figure 6A;
Figure 7A is a perspective view of the air distributor pipe of Figure 1 A, shown upside down for the sake of clarity, with a cover over the continuous longitudinal indentation;
Figure 7B is an end view of the pipe of Figure 7A, also shown upside down;
Figure 7C is a bottom plan view of the pipe of Figure 7A;
Figure 8 is a sectional end view of a pipe taken in an endless circumferential indentation in which two apertures have been placed in the dry shadow of the pipe; and
Figure 9 is a side view of the pipe in Figure 8, showing one row of apertures extending along the length of the pipe. DETAILED DESCRIPTION OF THE INVENTION
The inventors have determined that there are three key requirements of an improved air distributor, namely:
• Protection for the apertures from blocking by random alignment of rock in the drainage layer, which may occur during stacking of the heap after placement of the pipe;
• Protection for the apertures from precipitates forming in them as a result of evaporation of solution percolating through the heap which runs over the apertures or over rock proximate the apertures; and
• The air distributor should preferably comprise a single piece.
These requirements are achieved at least partly in the invention of which several embodiments are described by way of example only.
Figures 1 A to 1 C presents a preferred embodiment of the invention. A pipe (1 ) with a continuous semi-circular indentation (2) formed along the length of the pipe (1 ) is used for the air distributor. Apertures (3) are drilled through the pipe wall in the indentation (2). The pipe (1 ) is laid with the apertures (3) facing downwards in the heap.
The apertures (3) are protected from blockage by adjacent rocks since it is placed onto rocks and rocks placed onto the pipe will not be located adjacent the apertures (3). The apertures (3) are located inside the indentation (2) which creates a space between the apertures (3) and the rocks on which the pipe (1 ) is laid.
The apertures (3) are protected from solution running over them by having them located underneath the pipe (1 ) and spaced from the bottom (4) of the pipe (1 ). The indentation (2) provides an exit path along the entire length of the pipe (1 ) for air introduced through it, as opposed to only in the immediate vicinity of the apertures (3).
Since the pipe is of a single length it is simply laid with the apertures (3) face down onto the rock and can then be covered with more rock, which is simpler, quicker and cheaper than prior art air distributor systems.
Figures 2A to 2C show an alternative embodiment of the invention. In this embodiment a plurality of indentations (5) are formed in the pipe (6) and an aperture (7) is drilled through the pipe wall inside each indentation (5). The indentations (5) are spaced apart by a predetermined distance. Although the exit path for air is less than for the preferred embodiment shown in Figures 1 A to 1 C, it is still greater than just the immediate vicinity of the aperture. The apertures (7) are also protected from blockage by rocks and precipitates and the pipe (6) is made from a single piece of material.
For pipes which have a relative thick wall the indentation may be cut from the pipe wall itself. Two embodiment of air distributors which includes such indentations are shown in Figures 3A to 3C and 4A to 4C. In the pipes shown in these Figures, a rectangular indentation is cut from the pipe wall. In Fig 3A to 3C a continuous indentation (8) is cut from the pipe wall (9) and in Fig 4A to 4C a series of rectangular indentations (10) are cut from the pipe wall (1 1 ).
The indentation, whether continuous or periodic, may take any size and form that adequately protects the apertures from blockage by rocks and precipitates. Non-exhaustive examples include V-shaped (12) or U-shaped indentations as shown in Figures 5A to 5C. Further examples of periodic indentations include circular (13), star (14), triangular (15), pentagonal (16), and square (17) shapes, as shown in Figures 6A to 6C.
The indentation may be covered by a shield (18) to protect further the apertures (19) against blockage, especially when the pipe (20) is intended to be placed in a layer of relatively fine rock. The shield (18), as shown in Figures 7A to 7C, comprise a perforated mesh (21 ) which is secured over the indentation (22), in this case, or in the case of a series of indentations as shown in Figure 2A to 2C a complimentary number of shields would be secured over the indentations. The pipe (20) is shown with the apertures facing upwards in Figures 7A and 7B. This is for the sake of clarity only and this pipe (20) will be installed with the apertures
(19) facing downwards, similar to the other embodiments described above.
Figure 8 shows an end view of an aeration pipe (23) with apertures (24) located in the dry shadow (25) of the pipe (23). As mentioned above, the size of the dry shadow (25) depends amongst other things on the diameter of the pipe (23), the hydraulic conductivity of the drain material within which the pipe is located, and the amount of solution (26) passed through the heap. For given conditions in a heap there is a dry shadow (25). The size of the dry shadow (25) may vary with variations in the conditions of the heap, which means there may be areas at the boundary (27) of the dry shadow that do see solution from time to time. To keep the aeration pipe (23) from flooding with solution (26) through the aeration apertures (24), the apertures (24) are located in the actual dry shadow (25) and not, for example, in the boundary zone (27). Figure 9 shows a side view of the pipe of Figure 8, in which the spaced apart circumferential indentations (28) or grooves are also shown.
It will be appreciated that the embodiments described above have been include by way of example only, and are not intended to limit the scope of the invention. It is possible to alter certain aspects of the embodiments within the scope of the invention.
It is for example possible for an aperture to face downwards even when it is angled at about just less than 45° from the vertical. If it was at 45° or more it would be angled sideways. It is possible to use a pipe with a single row of apertures which face downwards at an angle just less than 45° from the vertical.

Claims

1 . An air distributor for a bio-assisted heap leaching system comprising a pipe having a series of apertures through the wall of the pipe, and with at least one aperture located in an indentation in the outer wall of the pipe.
2. An air distributor for a bio-assisted heap leaching process comprising a pipe having a series of apertures through the wall of the pipe, with the series of apertures configured operatively to face downwards in a heap.
3. An air distributor as claimed in claim 1 or 2 in which the pipe includes at least one continuous indentation.
4. An air distributor as claimed in claim 3 in which the continuous indentation extends longitudinally along the outer wall of the pipe and at least one of the apertures is located within the continuous indentation.
5. An air distributor as claimed in claim 3 in which the continuous indentation comprises an endless circumferential indentation and at least one of the apertures is located within the circumferential indentation.
6. An air distributor as claimed in claim 5 in which the pipe includes a plurality of endless circumferential indentations.
7. An air distributor as claimed in claim 5 or 6 in which each endless circumferential indentation includes two apertures spaced apart by between about 0° and 45° degrees from the vertical along the circumference of the pipe.
8. An air distributor as claimed in any one of claims 2 to 7 in which the series of apertures extends longitudinally along the pipe in a line which is orientated between about 0° and 45° degrees from the vertical along the circumference of the pipe.
9. An air distributor as claimed in claim 3 in which the continuous indentation comprises a helical indentation, and for a plurality of apertures to be located in the circumferential indentation.
10. An air distributor as claimed in claims 1 to 4 which includes a perforated cover over each aperture.
11 . An air distributor as claimed in claims 1 to 4 which includes a single perforated cover over the continuous indentation.
12. An air distributor as claimed in claims 5 to 7 which includes a perforated cover over each aperture.
13. An air distributor as claimed in claims 5 to 7 which includes a single perforated cover over each endless circumferential continuous indentation.
14. An air distributor as claimed in claims 5 to 7 which includes a single perforated cover over all the endless circumferential continuous indentations.
15. An air distributor as claimed in claim 8 which includes a perforated cover over each aperture.
16. An air distributor as claimed in claim 8 which includes a single perforated cover over each the helical indentation.
17. An air distributor as claimed in any one of claims 1 read with any of claims 3 to 16 in which the series of apertures are configured operatively to face downwards in a heap.
18. An air distributor as claimed in any one of claims 1 to 17 in which the apertures are configured operatively to be located in the dry shadow of a heap.
19. A bio-assisted heap leaching system which includes an air distributor as claimed in any one of claims 1 to 18.
20. A method of forming a bio-assisted heap leaching system which includes installing an air distributor as claimed in any one of claims 1 to 18 in the heap.
21 . A method of bio-assisted leaching of a heap which includes the step of introducing air into the heap through an air distributor as claimed in any one of claims 1 to 18.
PCT/IB2007/052814 2006-07-14 2007-07-13 Air distributor for heap leaching process WO2008010175A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ZA2006/05807 2006-07-14
ZA200605807 2006-07-14
ZA200701408 2007-01-30
ZA2007/01408 2007-01-30

Publications (3)

Publication Number Publication Date
WO2008010175A2 true WO2008010175A2 (en) 2008-01-24
WO2008010175A3 WO2008010175A3 (en) 2008-03-20
WO2008010175B1 WO2008010175B1 (en) 2008-05-29

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Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/IB2007/052814 WO2008010175A2 (en) 2006-07-14 2007-07-13 Air distributor for heap leaching process
PCT/IB2007/052815 WO2008010176A2 (en) 2006-04-14 2007-07-13 Gas distributor for a stacked particle bioreactor

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/052815 WO2008010176A2 (en) 2006-04-14 2007-07-13 Gas distributor for a stacked particle bioreactor

Country Status (12)

Country Link
EP (1) EP2049647A2 (en)
AR (2) AR062066A1 (en)
AU (1) AU2007274621A1 (en)
BR (1) BRPI0714506A2 (en)
CA (1) CA2657501A1 (en)
CL (1) CL2007002072A1 (en)
IL (1) IL196492A0 (en)
MX (1) MX2009000501A (en)
PE (1) PE20080383A1 (en)
SG (1) SG175623A1 (en)
UY (1) UY30487A1 (en)
WO (2) WO2008010175A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589611A (en) * 1969-03-05 1971-06-29 John B Jones Jr Distributors for injecting fluids into vessels
US6159726A (en) * 1995-06-02 2000-12-12 Geobiotics, Inc. Method of biotreatment for solid materials in a nonstirred surface bioreactor
WO2003042604A1 (en) * 2001-11-13 2003-05-22 Bhp Billiton Innovation Pty Ltd An air distributor for a bioleaching system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551457B2 (en) * 1982-07-22 1987-01-30 Union Ind Entreprise PROCESS AND INSTALLATION FOR REALIZING DEGRADATION IN ANAEROBIC MEDIA OF ORGANIC PRODUCTS, BY-PRODUCTS AND WASTE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589611A (en) * 1969-03-05 1971-06-29 John B Jones Jr Distributors for injecting fluids into vessels
US6159726A (en) * 1995-06-02 2000-12-12 Geobiotics, Inc. Method of biotreatment for solid materials in a nonstirred surface bioreactor
WO2003042604A1 (en) * 2001-11-13 2003-05-22 Bhp Billiton Innovation Pty Ltd An air distributor for a bioleaching system

Also Published As

Publication number Publication date
WO2008010176A3 (en) 2008-03-20
WO2008010176A2 (en) 2008-01-24
WO2008010175B1 (en) 2008-05-29
MX2009000501A (en) 2009-04-27
EP2049647A2 (en) 2009-04-22
AU2007274621A1 (en) 2008-01-24
AR062070A1 (en) 2008-10-15
AR062066A1 (en) 2008-10-15
WO2008010175A3 (en) 2008-03-20
BRPI0714506A2 (en) 2013-04-24
UY30487A1 (en) 2008-02-29
IL196492A0 (en) 2009-09-22
PE20080383A1 (en) 2008-05-23
SG175623A1 (en) 2011-11-28
CL2007002072A1 (en) 2008-06-27
CA2657501A1 (en) 2008-01-24

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