WO2020132767A1 - Dispositivo sensor y sistema para la medición en línea de la velocidad de gas superficial, profundidad de espuma, densidad aparente y holdup en celdas de flotación - Google Patents
Dispositivo sensor y sistema para la medición en línea de la velocidad de gas superficial, profundidad de espuma, densidad aparente y holdup en celdas de flotación Download PDFInfo
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- WO2020132767A1 WO2020132767A1 PCT/CL2019/050142 CL2019050142W WO2020132767A1 WO 2020132767 A1 WO2020132767 A1 WO 2020132767A1 CL 2019050142 W CL2019050142 W CL 2019050142W WO 2020132767 A1 WO2020132767 A1 WO 2020132767A1
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- WIPO (PCT)
- Prior art keywords
- tube
- pressure
- mass flow
- sensor device
- value
- Prior art date
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 39
- 238000005188 flotation Methods 0.000 title claims abstract description 26
- 230000006870 function Effects 0.000 claims description 15
- 238000009530 blood pressure measurement Methods 0.000 claims description 14
- 239000006260 foam Substances 0.000 claims description 7
- 230000000875 corresponding effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000011088 calibration curve Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000287227 Fringillidae Species 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/74—Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/028—Control and monitoring of flotation processes; computer models therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
- G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02818—Density, viscosity
Definitions
- the present invention relates to the field of measurement devices, more specifically to pressure and flow measurement devices, as well as derived quantities, and in particular provides a sensor device and a system for online measurement of the speed of surface gas, foam depth, bulk density and holdup in flotation cells and gas injection reactors, allowing the kinetics of the process to be controlled.
- the present invention provides a sensor device for on-line measurement of surface gas velocity, foam depth, bulk density, and holdup in flotation cells, characterized in that it comprises: a first tube having a first upper portion, a first lower portion and a first internal conduit; a second tube, inserted in said first internal conduit of said first tube, having a second upper portion, a second lower portion and a second internal conduit, said second tube having a greater length than said first tube; a first valve connected to the first upper portion of said first tube; a second valve connected to the second upper portion of said second tube; a first pressure gauge connected to the first upper portion of said first tube; a second pressure gauge connected to the second upper portion of said second tube; a first mass flow meter connected to the portion of said first valve that opposes said first tube; and a second mass flow meter connected to the portion of said second valve that opposes said second tube.
- the sensor device is characterized in that said first tube has an internal diameter of between 80 mm and 400 mm.
- the sensor device is characterized in that said first tube has a length of between 500 mm and 1000 mm.
- the senor device is characterized in that said second tube has an internal diameter of between 40 mm and 300 mm.
- the sensor device is characterized in that said second tube has a length of between 1200 mm and 3000 mm.
- the sensor device is characterized in that said first and second valves are solenoid valves.
- the sensor device is characterized in that said first and second pressure sensors are piezoelectric and resistive sensors.
- the sensor device is characterized in that said first and second mass flow meters are low pressure drop turbine sensors.
- the sensor device is characterized in that said first tube and said second tube are arranged substantially coaxially.
- the sensor device is characterized in that the upper end of said first tube is arranged to be substantially coplanar with the upper end of said second tube.
- the sensor device is characterized in that both tubes, first and second tube, are interconnected through a differential pressure sensor, which measures the hydrostatic pressure difference continuously.
- the present invention further provides a system for on-line measurement of surface gas velocity in flotation cells, characterized in that it comprises: a sensor device comprising: a first tube having a first upper portion, a first portion bottom and a first internal duct; a second tube, inserted in said first internal conduit of said first tube, having a second upper portion, a second lower portion and a second internal conduit, said second tube having a greater length than said first tube; a first valve connected to the first upper portion of said first tube; a second valve connected to the second upper portion of said second tube; a first pressure gauge connected to the first upper portion of said first tube; a second pressure gauge connected to the second upper portion of said second tube; a first flow meter mass connected to the portion of said first valve that opposes said first tube; and a second mass flow meter connected to the portion of said second valve that opposes said second tube; and a processor operatively connected to said first and second valves, to said first and second pressure sensors and to said first and second mass flow meters; wherein said
- the system is characterized in that it additionally comprises an information storage memory operatively connected to said processor, and in that said processor is configured to read information from said storage memory and write information to said storage memory.
- system is characterized in that said processor is additionally configured to communicate said value of the surface gas velocity to a central controller.
- the system is characterized in that in order to obtain said value of the superficial gas velocity, said processor is configured to: obtain a value of the apparent density of the pulp from said pressure values obtained from said first and second pressure and length difference sensors between said first and second tubes; obtaining a pressure variation value as a function of time from said pressure values obtained from said first and second pressure sensors; obtain an atmospheric pressure value; and obtaining a surface gas velocity value from said pulp bulk density value, said pressure variation value as a function of time, said atmospheric pressure value and the length value of the portion of said first tube that is submerged in said flotation cell.
- Fig. 1 shows a schematic view of a first embodiment of the system that is the object of the present invention.
- Fig. 2 shows a schematic view of a first embodiment of the sensor device that is the object of the present invention.
- a first object of the present invention is a sensor device (1) for the online measurement of the surface gas velocity, foam depth, bulk density and holdup in flotation cells, which it essentially comprises: a first tube (2) having a first upper portion (21), a first lower portion (22) and a first internal conduit (23); a second tube (3), inserted in said first internal conduit (23) of said first tube (2), which has a second upper portion (31), a second lower portion (32) and a second internal conduit (33), said second tube (3) having a greater length than said first tube (2); a first valve (4) connected to the first upper portion (21) of said first tube (2); a second valve (5) connected to the second upper portion (31) of said second tube (3); a first pressure gauge (6) connected to the first upper portion (21) of said first tube (2); a second pressure gauge (7) connected to the second upper portion (31) of said second tube (3); a first mass flow meter (8) connected to the portion of said first valve (5) that opposes said first tube (2); and a
- first tube (2) With respect to said first tube (2), as indicated, it has a first upper portion (21), a first lower portion (22) and a first internal conduit (23).
- second tube (3) With respect to said second tube (3), the It has a second upper portion (31), a second lower portion (32) and a second internal conduit (33), as well as a length greater than that of said first tube (2).
- Said second tube (3) is inserted into said first conduit (23) of said first tube (2).
- the relative upper, lower, lateral, left, right, up, down, front, back, front, back and the like references should be understood, as would be observed by an operator when the sensor device (1) or the system (10) that are the object of the present invention are normally in use.
- said first tube (2) is sealed at its upper end.
- said second tube (3) is sealed at its upper end.
- the means by which said sealing of said first tube (2) or of said second tube (3) is obtained do not limit the scope of the present invention.
- said first tube (2) may comprise a cap that seals it at its upper end, to which said second tube (3) is functionally coupled.
- said second tube (3) may be a tube that has a single opening, which is arranged at its lower end.
- said first tube (2) when the sensor device (1) that is the object of the present invention is normally in use, said first upper portion (21) protrudes from the flotation cell, while said first lower portion (22) is submerged in said flotation cell.
- said second tube (3) when the sensor device (1) that is the object of the present invention is normally in use, said second upper portion (31) protrudes from the flotation cell, while said second lower portion (32) is submerged in said flotation cell such that the lower end of said second tube (3) is it is found at a depth less than the lower end of said first tube (2).
- first tube (2) and of said second tube (3) do not limit the scope of the present invention and will depend on the specific conditions in which the sensor device is used. (1) that is the object of the present invention.
- said first tube (2) can have a length of between 500 mm and 1000 mm, more preferably between 500 mm and 700 mm.
- the internal diameter of said first tube (2) can be, for example and without this limiting the scope of the present invention, between 80 mm and 400 mm, more preferably 100 mm.
- said second tube (3) for example, and without this limiting the scope of the present invention, it can have a length of between 1200 mm and 3000 mm, more preferably between 1200 mm and 2000 mm.
- the internal diameter of said second tube (3) can be, for example and without limiting the scope of the present invention, between 40 mm and 300 mm, more preferably 50 mm.
- said first tube (2) or said second tube (3) are constructed of a corrosion resistant material, such as, without being limited to, stainless steel. , Teflon TM, glass, among others, as well as combinations between them.
- said second tube (3) is inserted into the first internal conduit (23) of said first tube (2). In this sense, it should be understood that the relative position between said first tube (2) and said second tube (3) does not limit the scope of the present invention.
- said second tube (3) can be totally or partially inserted in said first internal conduit (23) without this limiting the scope of the present invention.
- said second tube (3) is completely inserted in said first inner conduit (23) of said first tube (2).
- the upper end of said first tube (2) is arranged to be substantially coplanar with the upper end of said second tube (3).
- the upper end of said first tube (2) is arranged to be substantially coplanar with the upper end of said second tube (3) when the angle formed by the planes defined by the upper end of said first tube (2) and the upper end of said second tube (3) is between 0 o and 5 o , more preferably between 0 o and 2 o and even more preferably is 0 o , and when the distance between said end upper of said first tube (2) and said upper end of said second tube (3) is less than a certain value, for example and without this limiting the scope of the present invention, less than 10 mm, more preferably less than 5 mm and even more preferably less than 1 mm.
- first tube (2) and second tube (3) are arranged substantially parallel.
- first tube (2) and second tube (3) are arranged substantially parallel when the angle between their corresponding axes is between 0 or 5 or , more preferably between 0 or and 2 o and even more preferably if said angle is 0 o .
- the distance between the axes of said first tube (2) and second tube (3) does not limit the scope of the present invention.
- said first tube (2) and second tube (3) are arranged in a substantially coaxial manner.
- said first tube (2) and second tube (3) are arranged in a substantially coaxial manner when, in addition to being arranged substantially parallel, the maximum distance between the axis of said first tube (2) and the axis of said second tube (3) is less than 0.1 times the diameter of the second internal conduit (33) of said second tube (3), more preferably less than 0.01 times said diameter and even more preferably when said distance is less than 0.001 times said diameter.
- the sensor device (1) that is the object of the present invention further comprises a first valve (4) connected to the first upper portion (21) of said first tube (2) in fluid communication with said first inner conduit (23) ; and a second valve (5) connected to the second upper portion (31) of said second tube (3) in fluid communication with said second inner conduit (33).
- first and second valves (4, 5) their nature does not limit the scope of the present invention and can be both manual and automatic without this limiting the scope of the present invention.
- Said first and second valves (4, 5) may be, for example and without limiting the scope of the present invention, needle valves, annular valve, gate valve, diaphragm valve, globe valve, fixed cone valve , ball valve, ball valve, butterfly valve, as well as other types of valves known in the state of the art.
- said first and second valves (4, 5) are solenoid valves.
- Said preferred embodiment has the advantage that it allows remote actuation of said first and second valves (4, 5), for example and without this limiting the scope of the present invention, by means of a processor operatively coupled thereto.
- the function of said first and second valves (4, 5) is to seal said first and second tubes (2, 3), respectively, in order to provide an accumulation of gas inside them, or to open said first and second tubes (2, 3) allowing gas flow from said first and second tubes (2, 3) to the outside or to additional components.
- said first and second valves (4, 5) are connected, respectively, to said first and second tubes (2, 3) by means of quick connection type connections (Quick Flange ).
- said connections may have a diameter, without this limiting the scope of the present invention, between 10 mm and 150 mm, more preferably between 10 mm and 40 mm and even more preferably between 15 mm and 25 mm.
- said first and second valves (4, 5) can be connected, respectively, to said first and second tubes (2, 3) by means of a threaded connection.
- the sensor device (1) that is the object of the present invention further comprises a first pressure gauge (6) connected to the first upper portion (21) of said first tube (2) in fluid communication with said first inner conduit ( 2. 3); and a second pressure gauge (7) connected to the second upper portion (31) of said second tube (3) in fluid communication with said second inner conduit (33).
- first pressure sensor (6) and second pressure sensor (7) does not limit the scope of the present invention and can be, for example and without limiting the scope of the present invention, membrane manometers, sensors piezoelectric, thermocouple sensors, as well as any type of pressure sensor known in the state of the art.
- said first and second pressure sensors (6, 7) are piezoelectric sensors. This preferred embodiment has the advantage that it allows the remote acquisition of the pressure readings obtained by said first and second pressure sensors (6, 7), for example, and without this limiting the scope of the present invention, by means of a processor operatively coupled to said first and second pressure sensors (6, 7).
- first and second pressure sensors (6, 7) are connected to said first and second tubes (2, 3) respectively, does not limit the scope of the present invention. Additionally, the position in said first and second upper portions (21, 31) in which said first and second pressure sensors (6, 7) are connected, respectively, do not limit the scope of the present invention.
- said first and second pressure sensors (6, 7) are respectively connected to said first and second tubes (2, 3) by means of quick connection type connections ( Quick Flange).
- said connections may have a diameter, without this limiting the scope of the present invention, between 10 mm and 150 mm, more preferably between 10 mm and 40 mm and even more preferably between 15 mm and 25 mm.
- said first and second pressure sensors (6, 7) can be connected, respectively, to said first and second tubes (2, 3) by means of a threaded connection.
- Said first and second pressure sensors (6, 7) fulfill the function of allowing the measurement of pressure in said first and second tubes (2, 3) respectively. In this way, it is possible, for example and without limiting the scope of the present invention, to obtain values of the pressures as a function of time, which can be obtained both with said first and second valves (4, 5) open or closed. without this limiting the scope of the present invention.
- the sensor device (1) that is the object of the present invention, furthermore, comprises a first mass flow meter (8) connected to the portion of said first valve (5) that opposes said first tube (2); and a second mass flow meter (9) connected to the portion of said second valve (6) that opposes said second tube (3).
- first and second mass flow meters (8, 9) their nature does not limit the scope of the present invention.
- Said first and second mass flow meters (8, 9) can be, for example and without limiting the scope of the present invention, Venturi tubes, turbine flushometers, electromagnetic flushometers, ultrasound flushometers, as well as other types of mass flow meters known in the state of the art.
- said first and second mass flow meters (8, 8) are low pressure drop turbine sensors.
- Said preferred embodiment has the advantage that it allows remote acquisition of said mass flow measurements, for example and without this limiting the scope of the present invention, by means of a processor operatively coupled to said first and second mass flow meters (8, 9).
- said first and second mass flow meters (8, 9) are connected, respectively, to said first and second valves (4, 5) by means of quick connection type connections (Quick Flange).
- said connections may have a diameter, without this limiting the scope of the present invention, between 10 mm and 150 mm, more preferably between 10 mm and 40 mm and even more preferably between 15 mm and 25 mm.
- said first and second mass flow meters (8, 9) can be connected, respectively, to said first and second valves (4, 5) by means of threaded connections.
- the present invention further provides a system (10) for on-line measurement of surface gas velocity in flotation cells, essentially comprising: a sensor device comprising: a first tube (2) having a first upper portion (21), a first lower portion (22) and a first internal conduit (23); a second tube (3), inserted in said first internal conduit (23) of said first tube (2), which has a second upper portion (31), a second lower portion (32) and a second internal conduit (33), said second tube (3) having a greater length than said first tube (2); a first valve (4) connected to the first upper portion (21) of said first tube (2); a second valve (5) connected to the second upper portion (31) of said second tube (3); a first pressure gauge (6) connected to the first upper portion (21) of said first tube (2); a second pressure gauge (7) connected to the second upper portion (31) of said second tube (3); a first mass flow meter (8) connected to the portion of said first valve (5) that opposes said first tube (2); and a second mass flow meter
- said processor (1 1) is operatively connected to said first and second valves (4, 5) when it is configured to control the opening and closing of said first and second valves (4, 5).
- the way in which said processor (1 1) controls the opening and closing of said first and second valves (4, 5) does not limit the scope of the present invention.
- said processor (11) may be configured to continuously opening said first and second valves (4, 5), in which said first and second valves (4, 5) can acquire any opening state between a fully closed position and a fully open position.
- said processor (11) may be configured to discretely open said first and second valves (4, 5), in which said first and second valves (4, 5) can only acquire a set of opening states between a fully closed position and a fully open position.
- said processor (1 1) is configured to control said first and second valves (4, 5) so that they can only acquire a fully open position or a fully open position. closed.
- said processor (1 1) is operatively connected to said first and second pressure sensors (6, 7) when said processor (11) is configured to obtain values corresponding to pressure measurements from said first and second pressure sensors (6, 7).
- said processor (1 1) can be configured to obtain an electrical signal from each of said first and second pressure sensors (6, 7), where the amplitude of said electrical signal is correlated with corresponding pressure measurements.
- a data acquisition interface can be provided that allows said processor to obtain said values corresponding to pressure measurements. Said data acquisition interface may be, for example and without limiting the scope of the present invention, an analog to digital converter.
- said processor (11) can be configured to control said first and second pressure sensors (6, 7) in any way provided by a person with average knowledge in the technical field.
- said processor (1 1) may be configured to control said first and second pressure sensors (6, 7) so that the acquisition of pressure measurements is substantially continuous in the time.
- said processor (1 1) can be configured to control said first and second pressure sensors (6, 7) so that the acquisition of measurements of pressure be at regular intervals over time.
- the duration of said regular intervals does not limit the scope of the present invention and can be, for example and without this limiting the scope of the present invention, between 0.1 seconds and 3 seconds, more preferably between 0.2 seconds and 1 second and even more preferably between 0.5 seconds and 0.8 seconds.
- said processor (1 1) is operatively connected to said first and second mass flow meters (8, 9) when said processor (1 1) is configured to obtain values corresponding to mass flow measurements from said first and second mass flow meters (8, 9).
- said processor (1 1) can be configured to obtain an electrical signal from each of said first and second mass flow meters (8, 9), wherein the amplitude of said electrical signal is correlated with the corresponding mass flow measurements.
- a data acquisition interface can be provided that allows said processor to obtain said values corresponding to mass flow measurements.
- Said data acquisition interface may be, for example and without limiting the scope of the present invention, an analog to digital.
- a person with average knowledge in the technical field will note, however, that the way of operatively connecting said processor (1 1) with said first and second mass flow meters (8, 9) will depend on the nature of said first and second meters. mass flow (8, 9).
- said processor (11) can be configured to control said first and second mass flow meters (8, 9) in any way provided by a person with average knowledge in the technical field.
- said processor (1 1) may be configured to control said first and second mass flow meters (8, 9) so that the acquisition of mass flow measurements is substantially continuous over time.
- said processor (11) can be configured to control said first and second mass flow meters (8, 9) so that the acquisition of measurements of mass flow at regular intervals over time.
- the duration of said regular intervals does not limit the scope of the present invention and can be, for example and without this limiting the scope of the present invention, between 0.1 seconds and 3 seconds, more preferably between 0.2 seconds and 1 second and even more preferably between 0.5 seconds and 0.8 seconds.
- said means by which said operating connection is provided between said processor (1 1) and said first and second valves (4, 5), said first and second pressure sensors (6, 7) or said first and second mass flow meters (8, 9) do not limit the scope of the present invention.
- said first and second valves (4, 5), said first and second pressure sensors (6, 7) or said first and second luxury meters Mass (8, 9) can be connected to said processor (1 1) by appropriate cables or wires, for example, by USB, Ethernet, RS-232 cables, or other known wired connections.
- said first and second valves (4, 5), said first and second pressure sensors (6, 7) or said first and second mass luxury meters ( 8, 9) can connect to that processor (11) wirelessly, for example, through a local Wi-Fi connection, Bluetooth, Zigbee, or other modes of wireless communication known in the state of the art.
- said operational connection between said processor (1 1) and said first and second valves (4, 5) requires that said processor (1 1) can control the opening and closing of said first and second valves (4, 5 ).
- said operational connection between said processor (11) and said first and second pressure sensors (6, 7) requires that said processor (1 1) can obtain values corresponding to pressure measurements from said first and second pressure sensors (6 , 7).
- said operational connection between said processor (1 1) and said first and second mass flow meters (8, 9) requires that said processor (11) be able to obtain values corresponding to mass flow measurements from said first and second flow meters mass (8, 9).
- said processor (11) is configured to obtain a value of the surface gas velocity from said pressure measurements and from said mass flow measurements.
- said processor (1 1) obtains said value of the surface gas velocity from said pressure measurements and said mass flow measurements does not limit the scope of the present invention.
- said processor (11) may be configured to implement a mathematical model that allows obtaining said value of the surface gas velocity.
- said processor (11) can be configured to obtain a pulp bulk density value from said pressure values obtained from said first and second pressure sensors (6, 7) and the difference in length between said first and second tubes (2, 3).
- said pulp bulk density value is obtained by applying the following mathematical formula: V1 - V2
- p B is the value of the apparent density of the pulp
- p 1 is the pressure value measured in the first pressure sensor (6)
- p 2 is the pressure value measured on the second pressure sensor (7)
- L 2 is the length of the second tube (2).
- said processor (11) can be configured to obtain a pressure variation value as a function of time from said pressure values obtained from said first and second pressure sensors (6, 7).
- the way in which said processor (11) obtains said value of pressure variation as a function of time does not limit the scope of the present invention.
- said processor (1 1) can be configured to obtain said value of pressure variation as a function of time by applying the following mathematical formula:
- said processor (1 1) can be configured to obtain an atmospheric pressure value.
- said processor (1 1) may be configured to obtain said value of atmospheric pressure from a third pressure meter (not illustrated in the figures) arranged to carry out said measurement.
- said processor (1 1) may be configured to obtain said value of atmospheric pressure from other sources.
- said processor (1 1) may be configured to obtain said atmospheric pressure value from the internet, for which it is properly connected, or it may be configured to internally store a value atmospheric pressure. A person with average knowledge will notice that any way to obtain said value of atmospheric pressure can be used without this limiting the scope of the present invention.
- said processor (1 1) can be configured to obtain a value of gas surface velocity from said value of pulp bulk density, of said value of pressure variation as a function of time, of said value of atmospheric pressure and the value of the length of the portion of said first tube (2) that is submerged in said flotation cell.
- the way in which said processor (1 1) obtains said gas surface velocity value does not limit the scope of the present invention.
- said processor (1 1) can obtain said value of the gas surface velocity by applying the following mathematical formula:
- said processor (11) can be configured to obtain a value of the surface gas velocity from said mass flow measurements obtained from said first and second mass flow meters (8, 9).
- said processor (1 1) can obtain said value of the surface gas velocity by applying the following mathematical formula:
- J G i is the surface velocity of gas at time /;
- Q lt is the mass flow value measured on the first mass flow meter (8) at time i;
- 5 1 is the cross section of the first inner duct (23) of the first tube (2);
- 5 2 is the cross section of the second tube (3).
- said processor (1 1) can be configured to obtain a calibration curve of the surface gas velocity as a function of the mass flow measured in said first and second mass flow meters (8, 9).
- said processor may be configured to obtain a plurality of mass flow values from said first and second mass flow meters (8, 9); obtain a value of the surface gas velocity according to the method that uses the pressure measurements, for each one of said mass flow values; and get a calibration curve of the surface gas velocity as a function of the mass flow measured in said first and second mass flow meters (8, 9).
- said processor (1 1) may additionally be configured to communicate said value of the surface gas velocity to a central controller.
- said processor (1 1) can obtain said value of the surface gas velocity according to any method without this limiting the scope of the present invention.
- the way in which said processor (1 1) communicates said surface gas velocity value to a central controller does not limit the scope of the present invention.
- said processor (11) and said central controller may be connected by means of a local network, which may be wired or wireless.
- said processor (11) and said central controller may be connected to the internet, and said processor (1 1) may be configured to communicate said value of the rate of surface gas to said central controller using said network.
- said system (10) may additionally comprise a storage memory (not illustrated in the figures) operatively connected to said processor (1 1).
- said processor (1 1) is additionally configured to write information to said storage memory and read information from said storage memory.
- said processor (11) can be configured to store the pressure values obtained from said first and second pressure sensors (6, 7) in said storage memory; storing the mass flow values obtained from said first and second mass flow meters (8, 9) in said storage memory; storing surface gas velocity values obtained in said storage memory; read pressure values stored in said storage memory; read mass flow values stored in said storage memory; reading surface gas velocity values stored in said storage memory; and executing computer programs stored in said storage memory.
- said storage memory can be volatile or non-volatile without this limiting the scope of the present invention.
- said storage memory may be a Flash memory, a solid state disk, a hard disk drive, a RAM memory, as well as a combination of the previously listed components. .
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Abstract
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2019415164A AU2019415164A1 (en) | 2018-12-28 | 2019-12-16 | Sensor device and system for in-line measurement of superficial gas velocity, froth depth, apparent density and holdup in flotation cells |
MX2021007828A MX2021007828A (es) | 2018-12-28 | 2019-12-16 | Dispositivo sensor y sistema para la medicion en linea de la velocidad de gas superficial, profundidad de espuma, densidad aparente y holdup en celdas de flotacion. |
CA3125063A CA3125063A1 (en) | 2018-12-28 | 2019-12-16 | Sensing device and system for on-line measurement of surface gas velocity, froth depth, apparent density and holdup in flotation cells |
US17/418,985 US20220107214A1 (en) | 2018-12-28 | 2019-12-16 | Sensor Device and System for In-Line Measurement of Superficial Gas Velocity, Forth Depth, Apparent Density and Holdup in Flotation Cells |
PE2021001087A PE20211929A1 (es) | 2018-12-28 | 2019-12-16 | Dispositivo sensor y sistema para la medicion en linea de la velocidad de gas superficial, profundidad de espuma, densidad aparente y holdup en celdas de flotacion |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CL3885-2018 | 2018-12-28 | ||
CL2018003885A CL2018003885A1 (es) | 2018-12-28 | 2018-12-28 | Dispositivo sensor y sistema para la medición en línea de la velocidad de gas superficial, profundidad de espuma, densidad aparente y holdup en celdas de flotación |
Publications (1)
Publication Number | Publication Date |
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WO2020132767A1 true WO2020132767A1 (es) | 2020-07-02 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/CL2019/050142 WO2020132767A1 (es) | 2018-12-28 | 2019-12-16 | Dispositivo sensor y sistema para la medición en línea de la velocidad de gas superficial, profundidad de espuma, densidad aparente y holdup en celdas de flotación |
Country Status (7)
Country | Link |
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US (1) | US20220107214A1 (es) |
AU (1) | AU2019415164A1 (es) |
CA (1) | CA3125063A1 (es) |
CL (1) | CL2018003885A1 (es) |
MX (1) | MX2021007828A (es) |
PE (1) | PE20211929A1 (es) |
WO (1) | WO2020132767A1 (es) |
Citations (7)
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US5565099A (en) * | 1995-11-27 | 1996-10-15 | Les Traitements Des Eaux Poseidon Inc. | Floatation cell with integrated wall scraping means |
CN105021231A (zh) * | 2015-07-31 | 2015-11-04 | 中国矿业大学 | 一种浮选运动气泡特征观测实验装置及方法 |
CA2864780A1 (en) * | 2014-09-23 | 2016-03-23 | Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project, As Such Owners Exist Now And In The Future | System and method for image-based analysis of a slurry and control of a slurry process |
BR102014025371A2 (pt) * | 2014-10-10 | 2016-05-03 | Univ Fed Do Rio Grande Do Sul | sistema para medição, monitoramento e controle tamanho de bolha em colunas de flotação |
CA2944739A1 (en) * | 2015-10-09 | 2017-04-09 | Universidad De Santiago De Chile | Apparatus and method for measuring a gas volume fraction of an aerated fluid in a reactor |
JP2017070884A (ja) * | 2015-10-06 | 2017-04-13 | 住友金属鉱山株式会社 | ガスホールドアップ測定冶具及びガスホールドアップ率の算出方法 |
WO2018225003A1 (en) * | 2017-06-07 | 2018-12-13 | Stone Three Mining Solutions (Pty) Ltd | Real-time monitoring and performance advisory system for multi-cell froth flotation system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5467876A (en) * | 1995-04-04 | 1995-11-21 | The United States Of America As Represented By The Secretary Of The Interior | Method and apparatus for concentration of minerals by froth flotation |
-
2018
- 2018-12-28 CL CL2018003885A patent/CL2018003885A1/es unknown
-
2019
- 2019-12-16 CA CA3125063A patent/CA3125063A1/en active Pending
- 2019-12-16 PE PE2021001087A patent/PE20211929A1/es unknown
- 2019-12-16 WO PCT/CL2019/050142 patent/WO2020132767A1/es active Application Filing
- 2019-12-16 AU AU2019415164A patent/AU2019415164A1/en active Pending
- 2019-12-16 MX MX2021007828A patent/MX2021007828A/es unknown
- 2019-12-16 US US17/418,985 patent/US20220107214A1/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US5565099A (en) * | 1995-11-27 | 1996-10-15 | Les Traitements Des Eaux Poseidon Inc. | Floatation cell with integrated wall scraping means |
CA2864780A1 (en) * | 2014-09-23 | 2016-03-23 | Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project, As Such Owners Exist Now And In The Future | System and method for image-based analysis of a slurry and control of a slurry process |
BR102014025371A2 (pt) * | 2014-10-10 | 2016-05-03 | Univ Fed Do Rio Grande Do Sul | sistema para medição, monitoramento e controle tamanho de bolha em colunas de flotação |
CN105021231A (zh) * | 2015-07-31 | 2015-11-04 | 中国矿业大学 | 一种浮选运动气泡特征观测实验装置及方法 |
JP2017070884A (ja) * | 2015-10-06 | 2017-04-13 | 住友金属鉱山株式会社 | ガスホールドアップ測定冶具及びガスホールドアップ率の算出方法 |
CA2944739A1 (en) * | 2015-10-09 | 2017-04-09 | Universidad De Santiago De Chile | Apparatus and method for measuring a gas volume fraction of an aerated fluid in a reactor |
WO2018225003A1 (en) * | 2017-06-07 | 2018-12-13 | Stone Three Mining Solutions (Pty) Ltd | Real-time monitoring and performance advisory system for multi-cell froth flotation system |
Also Published As
Publication number | Publication date |
---|---|
PE20211929A1 (es) | 2021-09-28 |
US20220107214A1 (en) | 2022-04-07 |
CL2018003885A1 (es) | 2019-02-08 |
CA3125063A1 (en) | 2020-07-02 |
MX2021007828A (es) | 2021-08-11 |
AU2019415164A1 (en) | 2021-07-22 |
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