high rate thickener flocculant feed pipe

Thickener Operation and Flocculant Application

At startup, the relatively high level of feed solids, 1720%, called for in design led to difficulties in achieving the degree of flocculation necessary to meet required settling rates. It was recognized that decreasing feed solids would improve thickener performance while .

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TSRU TAILINGS PILOT SCALE THICKENING AND .

feed solids flow rate in feed containing 2030% solids. The overflow was under % solids and preliminary data suggested that solvent was not released at the thickener surface. The following recommendations were offered by Outotec: Feed solids loading t/m2h Flocculant dosage .

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Thickening Resource Book

Unlike conventional thickeners, high rate thickeners must use flocculants. The basic design of a high rate thickener is below. High rate thickener feed wells are designed to disperse flocculants thoroughly into the feed end to admit the flocculated slurry into the settling zone of the thickener without destruction of the newly formed floccules.

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Glue WITHOUT PAIN MAGRA ULTRASEP 2000 HIGH PERFOR .

The thickener again works like a low nourish thickness unit. Flocculant utilization are at an indistinguishable level from a low encourage thickness unit. The Ultrasep 2000 High Performance Thickener is self administrative and both the interior dewatering cycles change in accordance with suit sustain conditions. Stream Diagram High Density Feed

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thickeners clarifiers MIP Process Corp

• High Rate thickener (special feed well design) • High Density thickeners (deeper sidewall and more robust drive) • Paste thickeners • Ultra high rate thickeners Our units are available in a variety of sizes starting from 3ft diameter pilot scale to 300ft diameter. We have standard "off the shelf" designs available. Thickener tanks, rakes and feedwell's are custom designed,

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Thickener optimization to reduce your production costs ...

Dry solids feed rate: To be used as a feed forward signal for the flocculant dosing control loop, 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, and not just reacting to .

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Magra HighRate Thickener Presentation 2011 | Chemical ...

THE CONCEPT. The Magra HighRate Thickener is self regulatory and both the internal dewatering cycles adjust automatically to accommodate feed conditions and provide for reliable operation. The top edge of the mixing chamber is modified to include Vnotches similar in shape to the overflow launder Vnotches.

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Stacking practices of high density tailings

The primary thickener For the primary thickening, a high rate thickener with a diameter of 48 m is used that was designed to handling 875 tons of dry tailings per hour. In actual operation, however, it has reached a handling capacity of up to 1000 t/h. The rakedrive torque was found to be below 5%, and no rake arm rise occurred due to

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Uses and Benefits of Flow Measurement in the Operation of ...

independent variables such as flocculant rate, underflow flowrate, and feed rate. Figure 3 Common thickener configuration with independent and dependent variables Thickener feed Thickeners are commonly fed from a distribution tank. The line that feeds the thickener often has a slight incline and the flow is driven by gravity.

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Thickeners: How they Operate Mainland Machinery

Thickeners: How they Operate The most common solidsliquid (S/L) unit operation is thickening. A wide variety of thickeners are used including conventional, deep well, paste, high rate and clarifiers which is a thickener subclass used for removing solids from turbid or very low % solids waters.

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Paste and Thickened Tailings – a review

Paste and Thickened Tailings – a review Dr Liam MacNamara Vice President, EMEA FLSmidth NonFerrous . ... Thickener Underflow High Rate High Density Paste c o n s o l i d a t i Paste Lite. Rheology Underflow Solids, wt% ... "End of Pipe" flocculant addition . .

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The Effect of Solids Concentration, Flocculant Dosage and ...

As is shown, increasing flocculant dosage from 15 to 45 g/t led to an increase in settling flux about seven times. The reason is attributed to an increase in floc size and settling rate with flocculant dosage. The same trend was observed in the solids concentration of 7 and 15 %. Notice that, excessive flocculant dosage may reduce the compressibility

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Instrumentation and Control of Sedimentation Equipment

Instrumentation and Control of Sedimentation Equipment Abstract 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.

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Soluble metal recovery improvement using high density ...

SOLUBLE METAL RECOVERY IMPROVEMENT USING HIGH DENSITY THICKENERS 359 concentrate the slurry. These simulations are used to determine the suitability of using a high density thickener rather than a high rate thickener. As one can see in Figure 3, the continuous simulation achieved an underflow suspended solids concentration of 59 wt% when the mud

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Thickener an overview | ScienceDirect Topics

The control parameters used to maintain stable operation in highrate thickeners are underflow solids density, underflow withdrawal rate, flocculant dosage, solids inventory in the tank, solids feed rate, and mechanical torque limit restriction of the rotating rake arm mechanism. Loweryield stress muds, as produced in a highrate thickener ...

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The simulation of polymer aggregation/breakage at high ...

A mathematical model has been developed to describe the size and settling rate of aggregates formed by flocculation in thickeners/clarifiers used in the mineral processing industry. The aggregation process was simulated with a population balance model, which calculates the aggregate size distribution through time as a function of the competing processes of aggregation and breakage.

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high rate thickener flocculant feed pipe

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