Level Sensor Thickener Bed
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- Level Sensor Thickener Bed
One of the key equipments in solid-liquid separation in mineral processing plants is the thickener. To improve water recovery in thickeners, it is crucial to measure and control the solids bed ...
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A bed/mud level target is used to obtain optimum loading in the thickener without overloading the drive mechanism. Bed pressure is used as an indication of solids inventory. This helps the system determine whether a high bed level is the result of decreased settling rate or increased solids inventory.
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The multielectrode sensor used to measure the thickener bed height and percent solids in real time consists of the multielectrode bar and the electrode sensors. The bar is a cylinder made of high
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Optional sensors for monitoring bed level, underflow density and overflow turbidity ensure optimal operation. Types of Thickeners. McLanahan offers a range of thickener types, including ... The role of the feedwell in a …
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The ORCA Sonar Bed Level transducer emits a high-powered acoustic pulse, which is reflected from the interface density selected. The reflected signal is processed using specially developed software algorithms, that eliminate lighter floating densities and stratified layers, allowing measurement of RAS or BED levels.
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This system, shown in Figure 1, consists of a 3½ in. (89 mm) ID and 20 in. (508 mm) height lab thickener/clarifier equipped with feed, polymer and underflow pumps, bed level sensor and controller. Rake speed, the gap between the deflector plate and feed pipe, and pump speeds may be regulated to alter the operating conditions.
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Most mining process operators agree that one of their major challenges is to monitor the bed-level and mass of their thickeners, which, in conjunction with other critical process parameters, allows the optimisation of thickener efficiency. Bed-level. The bed-level is the interface between the aggregated solid material and the process water.
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ORCA Bed Level System. The ORCA Sonar Bed Level System will measure up to two density interfaces simultaneously. Typically these are bed levels / RAS blanket and floc / fluff layers. The sonar produces a high power concentrated beam, and provides critical plant control to optimize performance.
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The sonar system was supplied with an automated scum cleaner, that operated every 5 minutes. The ORCA sonar transmitter provided two analog outputs. The first was the "bed level" output and the second was the "clarity" of the water (suspended solids) between the sonar transducer diaphragm and the bed level.
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• Liquiline transmitter CM42 (2-wire with 2 sensor input) or • Liquiline CM44x with up to 8 sensors (4 bed level+4 other) • Turbimax CUS71D submersible Ultrasonic level sensor with cleaning assembly • Turbimax CUS51D particle settling rate sensor • Orbipac CPF81D pH sensor with CYA 112 mounting assembly
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For quality assurance and final confirmation of the water clarity, a turbidity sensor monitors the solid particle carry over. a pair of nucleonic density and inline flow meter can be installed. This predicts the flocculant dosing based on what dry solids feed is expected to enter as well as reacting to what happens with the bed level and bed mass.
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The thickener drive unit is the mechanism that powers the movement of the rake mechanism in a thickener. The drive unit is typically located at the top of the thickener tank and has a robust design to handle significant hours of operation. This design allows for ease of service and replacement of spares. ... Bed mass sensor; Bed level probe ...
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The ability of sensors to measure density gradients, as they move through the thickener bed, demonstrated that profiling of the bed can be used to diagnose …
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Liquiline CM44x with up to 8 sensors (4 bed level+4 other) Turbimax CUS71D submersible Ultrasonic level sensor with cleaning assembly. Turbimax CUS51D particle settling rate sensor. Orbipac CPF81D pH sensor with CYA 112 mounting assembly. Indumax CLS50D Conductivity sensor for sulphuric acid concentration measurement
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VEGA has the right level sensor for every application: Exact measuring results independent of process conditions: even at high temperatures and pressures; Reliable level measurement, even in the presence of and condensate thanks to non-contact measuring methods;
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Rake Torque from the scraper also works on total load and is affected by density and therefore cannot be used to control bed level. The displacement float sticks and suffers from build-up. The Sonar Acoustic transmitter can be calibrated to work with two different densities. We can track the Compact Bed Level to control the underflow pump.
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Automatic Sludge Blanket Level Detector — Get the Markland Advantage Measure, monitor and control the sludge bed depth. In diverse clarification processes: silt, sludge or biosolids in primary and secondary …
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Sludge level measurement with ultrasonic sensors. Ultrasonic sludge level sensors feature a piezoelectric crystal that is encased in a resistant polymer housing. When the crystal is excited with voltage it generates a sonar signal. In the process, ultrasonic waves are emitted to scan the separation zones.
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A bed level target is used to obtain optimum loading in the thickener without overloading the drive mechanism. ... Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No No No No No Open by pass feed to thickener DF>0 Check on torque sensor Alarm no feed to thickener DF<0 T>13 or (10
content, and the thickener inventory level Thickener Optimizer The solution overcomes the challenges of conventional single-loop controllers, and combines a multivariable, ... Bed pressure Time [h] Inventory level Before Before After After 50 100 150 200 50 100 150 200 DENSITY INVENTORY LEVEL Time [h] 0 0 10 20 30 40 50 60 70 80 90 100 1,3 1,5 ...
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Dual independent analogue outputs to track two different interfaces, or clarity simultaneously, with the one sonar sensor. Easy calibration to track specific density interfaces, eg: floc / fluff layer - 1g/l, Bed 10g/l+. …
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Hawk Measurement develops and manufactures level measurement products, including sludge level sensors & bed level transmitters. Call us now to learn more! ... secondary/final clarifier, and a gravity thickener. Thickener bed levels, secondary RAS blanket, flocculent blanket, etc, all have different densities and the water above these …
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The thickening process in mines can be improved significantly by an effective bed level measurement. Our solution The Endress+Hauser bed level measurement system consists of a Turbimax CUS71D ultrasonic interface sensor that is submerged 20-25 cm (8 – 10") below the water surface of the thickener and connected to a Liquiline CM442 ...
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Optimising underflow rheology is dependent on steady operation, which is linked to the ability to control bed level (solids residence time). This paper describes a new instrument for detecting the mud bed/liquor interface as well as the rheology of the mud bed. Measurements are made directly with sensors located in the thickener.
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Optional sensors for monitoring bed level, underflow density and overflow turbidity ensure optimal operation. Types of Thickeners. McLanahan offers a range of thickener types, including ... The role of the feedwell in a Thickener is to mix the slurry feed and flocculant under the right shear conditions to promote the fastest free settling. It ...
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Depending on the application conditions, different techniques are employed to determine a thickener's bed level: Theoretical bed level based on the calculation of the average density of a constant height using a hydrostatic pressure sensor. Submerged ultrasound sludge blanket transducer to sense reflections from the solid bed.
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The probe comes with automatic temperature compensation and position sensor, and must be connected to an SC200 or SC1000 Controller to form a complete system. Note: For graphical display of sludge profile, the Sonatax sc probe must be …
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An Advancement in Thickener Control MudMax directly measures the bed level with sensors located in the operating zone of the thickener sludge bed. MudMax is attached to the thickener rake arm and provides full 360-degreemeasurement of the bed by measuring the drag of the compacting solids as the rake moves around. Bed level is then calculated,
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Bed Mass: Reporting the inventory of settled solids inside the thickener is done with a pressure transmitter that senses the rising bed mass. The sensor is fitted in the …
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Some of the process variables that are commonly monitored on a thickener are torque, rake height, bed level, bed pressure, feed rate and density, underflow rate and density, settling rate, and overflow turbidity. Many of these are easily measured, while some can be difficult. Combining these signals into a coherent control strategy requires forethought …
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Five ways to measure Bed Level in Thickeners: The selection of technology to measure mud and interface levels in Thickeners depends on the process, …
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