thickener feed pump

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Most common problems in thickener operations (part 1)

Less thickener area Lower drive torque Smaller feed-well diameter Lower capacity pump discharge Larger diameter of the discharge pipe (underflow). This produces mineral settling Changes in ore properties The ore fed to the thickener is essentially variable due

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ThICKENERS

thickener using a low head axial pump to drive dilution water into the feedwell. The main advantage of the Forced Dilution system is that it takes the overflow liquor from a large surface area - ne- gating the risk of causing localized high internal rise rates.

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Pumping Thickener Underflow Slurries: Verderflex

 · Pumping Thickener Underflow Slurries Concentrate Slurry containing a abrasive materials from three areas including very abrasive high grade nickel concentrate, mixture of copper and nickel and copper slurry with low nickel, flows up to 359 l/min (95 US GPM), up to 72% solids density of 4.29 - 4.97.

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thickener overflow pump, thickener overflow pump …

 · Thickeners are designed to operate continuously with slurry/water consistently flowing into the centerwell with thickener underflow pumping balanced to maintain a mud bed in the thickener. Key to thickener operational efficiency is the solids must be able to …

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Isodry™ Thickeners | Reliable Tailings Management | Weir …

Feed pumps Distribution tank Feed measurement (flow rate and density) Variable dilution with our Warman® Q or Lewis® Q pump up to 20000m³/h with minimal electrical power Settling rate control Mud bed level measurement continuous or with diver

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Design and development of a novel thickener feedwell using …

Design and development of a novel thickener feedwell using computational fluid dynamics Feed dilution is essential in operations where the feed solids concentrations are too high for effective flocculation and hence thickener throughput. Dilution can be achieved

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pump

Feed pumps Distribution tank Feed measurement (flow rate and density) Variable dilution with our Warman® Q or Lewis® Q pump up to 20000m³/h with minimal electrical power Settling rate control Mud bed level measurement continuous or with diver

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Outotec Thickening technologies

Thickener operation with very high feed density and simultaneous requirement for dilution to low feed solids Very large feedwell diameters where mixing energy over and above that generated by the incoming feed needs to be provided ...

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Improve Clarifier and Thickener Design and Operation

Guess the thickener area for the first iteration. Several iterations of area may be required to achieve a practical thickener size and pumping rate. For a circular thickener with a 15.24 m (50 f t) dia.: A= Pi r 2 = 182.4 m 2 (7) The applied solids feed rate can now be

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US20050155917A1

The invention provides an axial flow pump ( 1 ) for accurately injecting supernatant liquid ( 2 ) from adjacent the liquid surface ( 3 ) of a thickening tank (not shown) to dilute liquid in a feedwell ( 4 ). The pump ( 1 ) includes a cup shaped receiving vessel ( 5 ...

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Design and development of a novel thickener feedwell using …

The PB-CFD thickener model is used to demonstrate the feedwell performance of a new feedwell design (termed the ''P266E feedwell'') against the three common feedwell designs shown in Figure 1: A 4 m open feedwell with a single feed inlet system A 4 m

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Difference Between Clarifier and Thickener

The Difference Between a Clarifier and a Thickener is subtle as they will visually look the same. Fundamentally, thickeners and clarifiers are both used to settle solids which results in the separation of liquids and solids. Thickeners are used to concentrate solids, while clarifiers are used to purify liquids. A thickener will give you a high density underflow while a clarifier will not. The ...

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EvenFlo® Feedwell

The air lift pump draws up clear water from low in the clarification zone, that does not disturb the surface of the thickener, to dilute and mix with the feed slurry in the feedwell. WesTech has the full range of feed dilution capability with the self-dilution ports or with the AirLift system to optimize the feedwell operation for any of your thickener needs.

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pump

Thickener Feed Pump Solution Preparation Machine back .240" (6 mm) off wear plate Abrasive blast to Sa 2.5 with 3 mil (75 µm) angular profile Application 1. Apply ARC MX1 and machine to exact tolerance using diamond tooling Results Performance

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ANDRITZ thickening and clarification systems

Bulk closed-circuit dilution technology (35% to 5% solids) using thickener overflow taken from the overflow weirs Accurate (to within 1%) and adjustable feed dilution to optimize flocculant usage Auto-dilution The optimum percentage of feed solids will ensure

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THE DEAL WITH DILUTION

thickener feed externally. Thickener feed dilution is an important facet of good thickener feed system design. It can have a significant impact as to whether a thickener achieves its process performance targets, as well as the overall cost of operation. 40 YEARS

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UNDERSTANDING POLYMER FOR THICKENING AND DEWATERING PROCESSES

drum thickener (Solids Flow Rate) is 350 gpm, the rotary drum thickener feed solids concentration (Solids Concentration) is 0.75%, and • If the active content of neat polymer (Active Neat Polymer Concentration) is 40%, then, using the equation provided, the

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Thickener

THICKENER TANK EIMCO KCP Thickener tanks are constructed either from bolted / steel welded or concrete. Most of the chemical process industries prefer the steel tanks construction since they may be elevated above ground level, allow inspection of the tank''s floor for leakages and bring the underflow slurry pumps nearer to the outlet of the discharge cone.

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Thickener Feed System Design

Thickeners often require dilution of the feed to improve settling rates and flocculant consumption. Dilution systems that rely on specific gravity differential between the feed and supernatant are often limited. WesTech''s AirLift dilution system uses an airlift pump

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Thickening

The feed well is designed to allow the feed to enter the conventional thickener with minimum turbulence and uniform distribution while dissipating most of its kinetic energy. Feed slurry enters the feed well, which is usually located in the centre of the thickener

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(PDF) THICKENER DESIGN, CONTROL AND …

characteristics of the thickener feed are well understood, it is wise to make allowance for feed variability and the expectations o f subsequent process users in spe cifying the rake torque limits.

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Thickener Underflow Pump

The diaphragm Thickener Underflow Pump is essentially one for low lifts and is particularly adapted to handle metallurgical pulps economically and with minimum attention. The Dorrco diaphragm pump was developed primarily as a means of controlling the density of the underflow from the Dorr thickener in the first continuous treatment of cyanide pulps. It has been proved the most satisfactory ...

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Feeding a Thickener for Good Settling and Underflow …

How much you feed a thickener and how/where you feed it will determine how well slurry or concentrate settles it it as well as the level of ease or difficulty you will have at obtaining a good underflow density and overflow clarity. By using the head assay of the concentrator, and the metallurgical test results that determined the percentage of recovery and the density of the thickener feed to ...

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Engineering Aspects in Solid Liquid Separation

Thickener tanks may be constructed either from steel or concrete and may reach diameters of 120 meters and in earthen basins up to 180 meters. Most of the chemical process industries prefer the steel tanks construction since they may be elevated above ground level, allow inspection of the tank''s floor for leakages and bring the underflow slurry pumps nearer to the outlet of the discharge cone.

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Sludge Thickening

Each thickener should have a dedicated feed pump of the progressive cavity type. Desludging can be initiated by sludge blanket level and terminated after a pre-set time, or when the solids concentration in the discharge measured in the outlet pipe falls to a pre-set value.

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Beginners guide to thickeners

The operation of the thickener must accommodate fluctuations – control for disturbances – in the process feed stream to deliver a clear overflow and thickened underflow. This control is achieved by manipulating both the flocculant addition and the rate of underflow withdrawal (typically pumping).

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Thickening

Thickeners. A thickener has several basic components: a tank to contain the slurry, feed piping and a feed well to allow the feed stream to enter the tank, a rotating rake mechanism to assist in moving the concentrated solids to the withdrawal points, an underflow solids withdrawal system, and …

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CHAPTER 5: SLUDGE TREATMENT FACILITIES 5.1 …

Part B: Operation and Maintenance 5 - 2 CHAPTER 5: SLUDGE TREATMENT FACILITIES A gravity thickener is shown in Figure 5.1 Figure 5.1 Example of a gravity thickener Continuous flow tanks are deep circular tanks with central feed and overflow at the

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pump

thickener using a low head axial pump to drive dilution water into the feedwell. The main advantage of the Forced Dilution system is that it takes the overflow liquor from a large surface area - ne- gating the risk of causing localized high internal rise rates.

Get price