WO2008138060A1 - System and method for maximising solids concentration of slurry pumped through a pipeline - Google Patents
System and method for maximising solids concentration of slurry pumped through a pipeline Download PDFInfo
- Publication number
- WO2008138060A1 WO2008138060A1 PCT/AU2008/000670 AU2008000670W WO2008138060A1 WO 2008138060 A1 WO2008138060 A1 WO 2008138060A1 AU 2008000670 W AU2008000670 W AU 2008000670W WO 2008138060 A1 WO2008138060 A1 WO 2008138060A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sump
- pipeline
- slurry
- section
- water
- Prior art date
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007787 solid Substances 0.000 title description 8
- 238000012360 testing method Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000003247 decreasing effect Effects 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims description 9
- 230000000737 periodic effect Effects 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 2
- 238000000518 rheometry Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/10—Pipelines for conveying excavated materials
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/30—Conveying materials in bulk through pipes or tubes by liquid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/088—Pipe-line systems for liquids or viscous products for solids or suspensions of solids in liquids, e.g. slurries
Definitions
- the present invention relates to systems for transporting slurry through pipelines.
- Fine particle mineral slurries are commonly transported by pipeline in the mineral and coal industries. Normally it is preferred to pump at as high a solids concentration as possible to minimise water usage. For typical fine particle slurries the maximum concentration is generally limited by the onset of laminar flow which is related to the rheology (viscosity) of the slurry. Turbulent flow is required to be maintained in the pipeline to prevent coarser particles settling and causing unstable operation and increasing pump pressure over time.
- a method for controlling slurry flowing through a pipeline including the steps of: providing dense slurry into a sump; adding water into the sump to dilute the dense slurry; pumping the diluted slurry from the sump to a main pipeline; providing a section of testing pipeline in-line with the main pipeline; measuring parameters relating to a turbulence parameter Y of the diluted slurry flowing through the test pipeline; determining a current turbulence parameter Y and comparing the current turbulence parameter Y with a predetermined maximum threshold value; wherein, if the current turbulence parameter Y is greater than the predetermined maximum threshold value, increasing the volume of water being added to the sump until the current turbulence parameter falls to a predetermined minimum value; otherwise, if the current turbulence parameter Y is less than the predetermined maximum threshold value, decreasing the volume of water being added to the sump.
- the section of testing pipeline has a larger internal cross- section than the main pipeline.
- the measured parameters include: the differential pressure along the length of the section of testing pipeline; the density of slurry entering the section of testing pipeline; and the volumetric flow rate of slurry entering the section of testing pipeline.
- the steps of increasing or decreasing the volume of water being added to the sump includes adjusting a flow valve in the water feed pipe. This adjustment may be conducted in periodic increments.
- the rate of diluted slurry being pumped from the sump is adjustable to maintain the slurry level in the sump below a selected level. Ideally, this adjustment is responsive to the output of a level detector in the sump.
- a system for controlling slurry flowing through a pipeline including: a sump, into which dense slurry and diluting water are added; one or more pumps for pumping diluted slurry from the sump to a main pipeline; a section of testing pipeline provided in-line with the main pipeline; a plurality of detectors for measuring parameters relating to a turbulence parameter Y of the diluted slurry flowing through the test pipeline; a controller arranged to receive the outputs from the detectors, the controller being programmed to determine a current turbulence parameter Y and compare the current turbulence parameter Y with a predetermined maximum threshold value; wherein, if the current turbulence parameter Y is greater than the predetermined maximum threshold value, the controller causes an increase in the volume of water being added to the sump until the current turbulence parameter falls to a predetermined minimum value; otherwise, if the current turbulence parameter Y is less than the predetermined maximum threshold value, the
- the present invention advantageously provides a slurry pipeline system which controls water usage to keep the same to a minimum and maximise the solids concentration of slurry delivered by the pipeline.
- Fig. 1 illustrates a schematic diagram of the components of a slurry pipeline system. DESCRIPTION OF PREFERRED EMBODIMENT
- Q is volumetric flow rate of slurry.
- the turbulence parameter Y is essentially constant over a normal range of flow rates, slurry densities and slurry rheology. It should be appreciated that this constant parameter can vary between different pipeline systems, hence a new pipeline system needs to undergo testing and analysis to determine its own normal turbulence parameter. Under undesirable conditions, such as when there is a transition from turbulent flow to laminar flow or when the flow rate falls below a deposition velocity (whereby coarse particles begin to settle), there is a marked increase in the turbulence parameter Y.
- Fig. 1 illustrates a schematic representation of a slurry control system.
- High density slurry discharges from a slurry thickener 6 and is pumped via a thickener underflow pump 7 into a sump 8. Water is fed into the sump via a feedpipe to dilute the slurry in the sump 8. The volume of water flowing into the sump is controlled by a flow valve 12.
- Main slurry pumps 9 pump the diluted slurry to a main transfer pipeline 11.
- Figure 1 shows two main slurry pumps in series. It will be appreciated that the number of pumps can vary depending on requirements for the actual pipeline system.
- testing pipeline 1 In-line with the main pipeline 11 there is provided a section of testing pipeline 1.
- the diluted slurry is caused to flow through the testing pipeline 1 to the main pipeline 11 from the main pumps 9.
- a density meter 2 for example a nuclear density gauge, measures the specific gravity/density of slurry entering the testing pipeline 1.
- a flowmeter 3 for example a magnetic flowmeter, measures the volumetric flow rate of slurry entering the testing pipeline 1.
- a differential pressure meter 4 measures the differential pressure over the length of testing pipeline 1.
- a controller 5 receives signals indicative of the measured outputs of the density meter 2, flowmeter 3 and differential pressure meter 4. Based on the received signals, the controller 5 is programmed to calculate a current turbulence parameter Y using the equation noted above.
- the controller 5 compares the current turbulence parameter Y with a predetermined maximum threshold value.
- This maximum threshold value is selected upon the basis of the onset of undesirable flow conditions in the testing pipeline 1. Practically, such thresholds would be determined by conducting tests and analysis of the particular pumping system after initial installation. As discussed before, undesirable conditions include the presence of laminar flow (in the case of fine particle slurries) and the deposition of a bed of slurry particles (in the case of coarse slurry particles) in the testing pipeline 1.
- the maximum threshold value is approximately 10% above a turbulence parameter indicative of a homogeneous turbulent flow condition in the testing pipeline 1.
- the testing pipeline 1 has a larger internal cross-sectional area than the main pipeline 11. Due to the larger cross-section, the flow velocity in the testing pipeline 1 is lower than the main pipeline 11. Hence, while a transition to laminar flow may be present in the testing pipeline 1 ; required turbulent flow will remain in the main pipeline 11. Similarly, in the case of coarse particle slurries, as flow velocity reduces, deposition will initially occur in the testing pipeline 1 before the main pipeline. In the case of deposition, a bed of particles will begin to form in the testing pipeline, thereby increasing the pressure gradient. In each case, the onset of undesirable conditions in the testing pipeline 1 results in an increase in the current turbulence parameter Y.
- the controller 5 on the basis of the current turbulence parameter Y and the comparison with the predetermined maximum threshold value, sends a control signal to the flow valve 12 to adjust the volume of water being added to the sump 8.
- the controller 5 slowly, but continuously, increases the slurry density, i.e. solids concentration, by decreasing the volume of water being added to the sump 8.
- the increase in slurry density may be, for example, 0.01 SG point every 5 minutes.
- the controller 5 starts to decrease the slurry density at a set rate by increasing the volume of water being added to the sump 8.
- the system additionally includes a level detector 10 in the sump 8.
- the output of the level detector 10 is used in a separate control loop with the controller 5 and the main pumps 9 to control the pumping speed of the pumps 9 to maintain the sump level below a selected threshold. As such, the pump speed is varied to vary the diluted slurry flow rate to suit input flow into the sump 8.
- testing pipeline 1 The length of testing pipeline 1 will depend upon the internal cross-section employed. However, it may be typically around 20m to 100m. Conveniently, the testing pipeline 1 will form the initial portion of the pipeline system with the main pipeline 11 continuing on from the end of the testing pipeline 1. However, conceivably, the testing pipeline 1 could be provided further downstream of the pipeline system. While the testing pipeline 1 has been schematically illustrated as a straight section, it may be provided in different configurations. For example, it may be advantageous to provide the testing pipeline 1 in the form of a loop, thereby bringing the ends of the testing pipeline physically close together. This loop configuration would greater facilitate the arrangement of the differential pressure meter 4.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A method for controlling slurry flowing through a pipeline (11) is provided. Dense slurry is provided into a sump (8). Water is added into the sump (8) to dilute the dense slurry. The diluted slurry is pumped from the sump (8) to a main pipeline (11). A section of testing pipeline (1) is provided in-line with the main pipeline (11). Parameters relating to a turbulence parameter Y of the diluted slurry flowing through the test pipeline (1) are measured. A current turbulence parameter Y is determined and compared with a predetermined maximum threshold value. If the current turbulence parameter Y is greater than the predetermined maximum threshold value, the volume of water being added to the sump (8) is increased until the current turbulence parameter falls to a predetermined minimum value. Otherwise, if the current turbulence parameter Y is less than the predetermined maximum threshold value, the volume of water being added to the sump (8) is decreased. A system for implementing the method is also provided.
Description
SYSTEM AND METHOD FOR MAXIMISING SOLIDS CONCENTRATION OF
SLURRY PUMPED THROUGH A PIPELINE FIELD OF THE INVENTION
The present invention relates to systems for transporting slurry through pipelines.
BACKGROUND TO THE INVENTION
Fine particle mineral slurries are commonly transported by pipeline in the mineral and coal industries. Normally it is preferred to pump at as high a solids concentration as possible to minimise water usage. For typical fine particle slurries the maximum concentration is generally limited by the onset of laminar flow which is related to the rheology (viscosity) of the slurry. Turbulent flow is required to be maintained in the pipeline to prevent coarser particles settling and causing unstable operation and increasing pump pressure over time.
It is common to control slurry concentration by using a nuclear density meter to measure slurry density and to set the density set point as high as possible within the pumping capability of the system. Control based on density measurement is satisfactory when the rheology of the slurry does not vary for any particular concentration. However, there are many cases where, because of differing ore types, the rheology of the slurry can vary considerably even though the slurry density remains constant. In these cases the density set point must be set sufficiently low to accommodate the highest rheology ore type, meaning that unnecessary water is added to the lower rheology slurries.
It is an object of the present invention to provide a system which optimises the solids concentration of slurry flow through a pipeline with reduced water wastage.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a method for controlling slurry flowing through a pipeline, the method including the steps of: providing dense slurry into a sump; adding water into the sump to dilute the dense slurry; pumping the diluted slurry from the sump to a main pipeline; providing a section of testing pipeline in-line with the main pipeline;
measuring parameters relating to a turbulence parameter Y of the diluted slurry flowing through the test pipeline; determining a current turbulence parameter Y and comparing the current turbulence parameter Y with a predetermined maximum threshold value; wherein, if the current turbulence parameter Y is greater than the predetermined maximum threshold value, increasing the volume of water being added to the sump until the current turbulence parameter falls to a predetermined minimum value; otherwise, if the current turbulence parameter Y is less than the predetermined maximum threshold value, decreasing the volume of water being added to the sump.
Preferably, the section of testing pipeline has a larger internal cross- section than the main pipeline.
In exemplary embodiments, the measured parameters include: the differential pressure along the length of the section of testing pipeline; the density of slurry entering the section of testing pipeline; and the volumetric flow rate of slurry entering the section of testing pipeline.
In preferred embodiments, the steps of increasing or decreasing the volume of water being added to the sump includes adjusting a flow valve in the water feed pipe. This adjustment may be conducted in periodic increments. Preferably, the rate of diluted slurry being pumped from the sump is adjustable to maintain the slurry level in the sump below a selected level. Ideally, this adjustment is responsive to the output of a level detector in the sump.
According to a further aspect of the present invention there is provided a system for controlling slurry flowing through a pipeline, the system including: a sump, into which dense slurry and diluting water are added; one or more pumps for pumping diluted slurry from the sump to a main pipeline; a section of testing pipeline provided in-line with the main pipeline; a plurality of detectors for measuring parameters relating to a turbulence parameter Y of the diluted slurry flowing through the test pipeline; a controller arranged to receive the outputs from the detectors, the controller being programmed to determine a current turbulence parameter Y and
compare the current turbulence parameter Y with a predetermined maximum threshold value; wherein, if the current turbulence parameter Y is greater than the predetermined maximum threshold value, the controller causes an increase in the volume of water being added to the sump until the current turbulence parameter falls to a predetermined minimum value; otherwise, if the current turbulence parameter Y is less than the predetermined maximum threshold value, the controller causes a decrease in the volume of water being added to the sump.
The present invention advantageously provides a slurry pipeline system which controls water usage to keep the same to a minimum and maximise the solids concentration of slurry delivered by the pipeline. BRIEF DESCRIPTION OF THE DRAWING
A preferred embodiment of the present invention will now be described with reference to the accompanying drawing, in which: Fig. 1 illustrates a schematic diagram of the components of a slurry pipeline system. DESCRIPTION OF PREFERRED EMBODIMENT
As basis for the present invention, there is practical use made of a so- called turbulence parameter Y. The parameter Y is given by the equation:
Pressure Drop across a Measurement Length
SG a x Q "
where SG is specific gravity/density of the slurry and is related to the solids concentration of the slurry
Q is volumetric flow rate of slurry.
The exponents a and b will vary slightly between applications but typically a = 1.3 and b = 2.
It has been found that, under required homogeneous turbulent flow conditions for slurry flowing through a particular pipeline system, the turbulence
parameter Y is essentially constant over a normal range of flow rates, slurry densities and slurry rheology. It should be appreciated that this constant parameter can vary between different pipeline systems, hence a new pipeline system needs to undergo testing and analysis to determine its own normal turbulence parameter. Under undesirable conditions, such as when there is a transition from turbulent flow to laminar flow or when the flow rate falls below a deposition velocity (whereby coarse particles begin to settle), there is a marked increase in the turbulence parameter Y.
Fig. 1 illustrates a schematic representation of a slurry control system. High density slurry discharges from a slurry thickener 6 and is pumped via a thickener underflow pump 7 into a sump 8. Water is fed into the sump via a feedpipe to dilute the slurry in the sump 8. The volume of water flowing into the sump is controlled by a flow valve 12.
Main slurry pumps 9 pump the diluted slurry to a main transfer pipeline 11. Figure 1 shows two main slurry pumps in series. It will be appreciated that the number of pumps can vary depending on requirements for the actual pipeline system.
In-line with the main pipeline 11 there is provided a section of testing pipeline 1. The diluted slurry is caused to flow through the testing pipeline 1 to the main pipeline 11 from the main pumps 9.
A density meter 2, for example a nuclear density gauge, measures the specific gravity/density of slurry entering the testing pipeline 1. A flowmeter 3, for example a magnetic flowmeter, measures the volumetric flow rate of slurry entering the testing pipeline 1. A differential pressure meter 4 measures the differential pressure over the length of testing pipeline 1.
A controller 5 receives signals indicative of the measured outputs of the density meter 2, flowmeter 3 and differential pressure meter 4. Based on the received signals, the controller 5 is programmed to calculate a current turbulence parameter Y using the equation noted above.
The controller 5 compares the current turbulence parameter Y with a predetermined maximum threshold value. This maximum threshold value is selected upon the basis of the onset of undesirable flow conditions in the testing
pipeline 1. Practically, such thresholds would be determined by conducting tests and analysis of the particular pumping system after initial installation. As discussed before, undesirable conditions include the presence of laminar flow (in the case of fine particle slurries) and the deposition of a bed of slurry particles (in the case of coarse slurry particles) in the testing pipeline 1. Typically, the maximum threshold value is approximately 10% above a turbulence parameter indicative of a homogeneous turbulent flow condition in the testing pipeline 1.
Ideally, the testing pipeline 1 has a larger internal cross-sectional area than the main pipeline 11. Due to the larger cross-section, the flow velocity in the testing pipeline 1 is lower than the main pipeline 11. Hence, while a transition to laminar flow may be present in the testing pipeline 1 ; required turbulent flow will remain in the main pipeline 11. Similarly, in the case of coarse particle slurries, as flow velocity reduces, deposition will initially occur in the testing pipeline 1 before the main pipeline. In the case of deposition, a bed of particles will begin to form in the testing pipeline, thereby increasing the pressure gradient. In each case, the onset of undesirable conditions in the testing pipeline 1 results in an increase in the current turbulence parameter Y.
The controller 5, on the basis of the current turbulence parameter Y and the comparison with the predetermined maximum threshold value, sends a control signal to the flow valve 12 to adjust the volume of water being added to the sump 8.
An example of the system operation will now be described. The controller 5 slowly, but continuously, increases the slurry density, i.e. solids concentration, by decreasing the volume of water being added to the sump 8. The increase in slurry density may be, for example, 0.01 SG point every 5 minutes. Eventually the onset of laminar flow and/or particle deposition will occur in the testing pipeline 1 and the current turbulence parameter Y will start to rise. As discussed before, at this time, turbulent flow will still exist in the main pipeline 11. When the current turbulence parameter Y reaches the maximum threshold value, the controller 5 starts to decrease the slurry density at a set rate by increasing the volume of water being added to the sump 8. This decrease in slurry density is maintained until the current turbulence parameter Y drops back to a predetermined minimum or normal turbulence value. Once this condition is
achieved then, after a set period of time, the controller 5 again starts increasing the slurry density, thereby repeating the process.
It will be appreciated that the above process, in fact, attempts to reduce water usage thereby increasing slurry density and maximising the solids concentration of the slurry flowing through the main pipeline 11.
The system additionally includes a level detector 10 in the sump 8. The output of the level detector 10 is used in a separate control loop with the controller 5 and the main pumps 9 to control the pumping speed of the pumps 9 to maintain the sump level below a selected threshold. As such, the pump speed is varied to vary the diluted slurry flow rate to suit input flow into the sump 8.
The length of testing pipeline 1 will depend upon the internal cross-section employed. However, it may be typically around 20m to 100m. Conveniently, the testing pipeline 1 will form the initial portion of the pipeline system with the main pipeline 11 continuing on from the end of the testing pipeline 1. However, conceivably, the testing pipeline 1 could be provided further downstream of the pipeline system. While the testing pipeline 1 has been schematically illustrated as a straight section, it may be provided in different configurations. For example, it may be advantageous to provide the testing pipeline 1 in the form of a loop, thereby bringing the ends of the testing pipeline physically close together. This loop configuration would greater facilitate the arrangement of the differential pressure meter 4.
While the present invention has been described with respect to specific embodiments, it will be appreciated that various modifications and changes could be made.
Claims
1. A method for controlling slurry flowing through a pipeline, said method including the steps of: providing dense slurry into a sump; adding water into said sump to dilute said dense slurry; pumping said diluted slurry from said sump to a main pipeline; providing a section of testing pipeline in-line with said main pipeline; measuring parameters relating to a turbulence parameter Y of the diluted slurry flowing through said test pipeline; determining a current turbulence parameter Y and comparing the current turbulence parameter Y with a predetermined maximum threshold value; wherein, if said current turbulence parameter Y is greater than said predetermined maximum threshold value, increasing the volume of water being added to said sump until said current turbulence parameter falls to a predetermined minimum value; otherwise, if said current turbulence parameter Y is less than said predetermined maximum threshold value, decreasing the volume of water being added to said sump.
2. The method of claim 1 , wherein the section of testing pipeline has a larger internal cross-section than said main pipeline.
3. The method of claim 1 or 2, wherein said measured parameters include: the differential pressure along the length of said section of testing pipeline; the density of slurry entering said section of testing pipeline; and the volumetric flow rate of slurry entering said section of testing pipeline.
4. The method of any one of the preceding claims, wherein the steps of increasing or decreasing the volume of water being added to said sump includes adjusting a flow valve in the water feed pipe.
5. The method according to any one of the preceding claims, wherein the steps of increasing or decreasing the volume of water being added to said sump are implemented in periodic increments.
6. The method according to any one of the preceding claims, further including: adjusting the rate of diluted slurry being pumped from said sump to maintain the slurry level in said sump below a selected level.
7. The method according to claim 6, wherein the step of adjusting the pumping rate is responsive to the output of a level detector in said sump.
8. The method according to any one of the preceding claims, wherein said predetermined maximum threshold value is set as 10% above said predetermined minimum value.
9. A system for controlling slurry flowing through a pipeline, said system including: a sump, into which dense slurry and diluting water are added; one or more pumps for pumping diluted slurry from said sump to a main pipeline; a section of testing pipeline provided in-line with said main pipeline; a plurality of detectors for measuring parameters relating to a turbulence parameter Y of the diluted slurry flowing through said test pipeline; a controller arranged to receive the outputs from said detectors, said controller being programmed to determine a current turbulence parameter Y and compare the current turbulence parameter Y with a predetermined maximum threshold value; wherein, if said current turbulence parameter Y is greater than said predetermined maximum threshold value, said controller causes an increase in the volume of water being added to said sump until said current turbulence parameter falls to a predetermined minimum value; otherwise, if said current turbulence parameter Y is less than said predetermined maximum threshold value, said controller causes a decrease in the volume of water being added to said sump.
10. The system according to claim 9, wherein the section of testing pipeline has a larger internal cross-section than said main pipeline.
11. The system according to claim 9 or 10, wherein said plurality of detectors include: a differential pressure meter arranged to measure the differential pressure along the length of said section of testing pipeline; a density meter arranged to measure the density of slurry entering said section of testing pipeline; and a flowmeter arranged to measure the volumetric flow rate of slurry entering said section of testing pipeline.
12. The system according to any one of claims 9 to 11 , wherein said controller is arranged to control a flow valve in a water feed pipe in order to increase or decrease the volume of water being added to said sump.
13. The system according to any one of claims 9 to 12, wherein said controller is programmed to cause the increase or decrease in the volume of water being added to said sump in periodic increments.
14. The system according to any one of claims 9 to 13, further including a level detector in said sump; wherein the pumping rate of said one or more pumps are arranged to be adjusted based upon the output of said level detector to maintain the slurry level in said sump below a selected level.
15. The system according to any one of claims 9 to 14, wherein said section of testing pipeline has a length of 20-100 metres.
16. The system according to any one of claims 9 to 15, wherein said section of testing pipeline is provided in the form of a loop.
17. The system according to any one of claims 9 to 16, wherein said predetermined maximum threshold value is set as 10% above said predetermined minimum value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2008251031A AU2008251031B2 (en) | 2007-05-16 | 2008-05-13 | System and method for maximising solids concentration of slurry pumped through a pipeline |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2007902609 | 2007-05-16 | ||
| AU2007902609A AU2007902609A0 (en) | 2007-05-16 | MaxSolids - A system to maximise solids concentration pumped through a slurry pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008138060A1 true WO2008138060A1 (en) | 2008-11-20 |
Family
ID=40001597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AU2008/000670 WO2008138060A1 (en) | 2007-05-16 | 2008-05-13 | System and method for maximising solids concentration of slurry pumped through a pipeline |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2008251031B2 (en) |
| WO (1) | WO2008138060A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010093514A1 (en) * | 2009-02-13 | 2010-08-19 | Technip France | System and method of utilizing monitoring data to enhance seafloor sulfide production for deepwater mining system |
| CN102530561A (en) * | 2011-12-13 | 2012-07-04 | 江西稀有稀土金属钨业集团有限公司 | System and method for conveying tailings with multistage sand pumps connected in series |
| WO2014102818A1 (en) * | 2012-12-24 | 2014-07-03 | Cadila Healthcare Limited | Novel quinolone derivatives |
| CN110397850A (en) * | 2018-07-06 | 2019-11-01 | 中煤张家口煤矿机械有限责任公司 | Intensive automatic sludge conveying and distributing device and using method |
| CN110736028A (en) * | 2019-09-29 | 2020-01-31 | 云南大红山管道有限公司 | Acceleration flow control system and method in transportation of long-distance slurry pipeline multi-stage pump station |
| CN114791088A (en) * | 2022-04-06 | 2022-07-26 | 云南大红山管道有限公司 | Adding device and adding control method for lime milk in slurry pipeline |
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- 2008-05-13 WO PCT/AU2008/000670 patent/WO2008138060A1/en active Application Filing
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Cited By (12)
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| US7784201B2 (en) | 2007-09-23 | 2010-08-31 | Technip France | System and method of utilizing monitoring data to enhance seafloor sulfide production for deepwater mining system |
| WO2010093514A1 (en) * | 2009-02-13 | 2010-08-19 | Technip France | System and method of utilizing monitoring data to enhance seafloor sulfide production for deepwater mining system |
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| EA028402B1 (en) * | 2012-12-24 | 2017-11-30 | Кадила Хелзкэр Лимитед | Quinolone derivatives |
| CN110397850A (en) * | 2018-07-06 | 2019-11-01 | 中煤张家口煤矿机械有限责任公司 | Intensive automatic sludge conveying and distributing device and using method |
| CN110736028A (en) * | 2019-09-29 | 2020-01-31 | 云南大红山管道有限公司 | Acceleration flow control system and method in transportation of long-distance slurry pipeline multi-stage pump station |
| CN114791088A (en) * | 2022-04-06 | 2022-07-26 | 云南大红山管道有限公司 | Adding device and adding control method for lime milk in slurry pipeline |
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| AU2008251031B2 (en) | 2013-12-19 |
| AU2008251031A1 (en) | 2008-11-20 |
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