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Tailings thickener retrofit, OK Tedi

The pyrite concentrate containing sulphur report to a 40m concentrate thickener, namely thickener 1. The tailings from the Pyrite recovery plant reported to two 50m Dorr Oliver conventional thickeners, both of which were to be retrofitted and upgraded. The retrofit and upgrade was to improve the settling rates of solids in the …

Conventional Clarifier

Density Current Baffle: Eliminates wall currents and prevents short-circuiting. The wall-mounted baffle is low in cost and requires no maintenance. Flocculating Feedwell: …

CHOOSING THE RIGHT THICKENER

of a "High Rate Thickener" as one using floc is now commonly being described as a "Conventional Thickener". Altering the flocculants dosage (and/or type) often affects the settling rate by changing the size and/or electrostatic charge. Thus, using more flocculants can accommodate a higher rise rate; however, there is both an operation

Solid – Liquid Separation – Thickening

The feed launder terminates in a feed well located at the centre of the tank. The feed well is designed to break the fall of the slurry and dissipate the energy. Download: Download full-size image; Figure 14.1. Sketch of a Thickener Showing the Access Bridge, Feed Well, Rakes Supported by the Central Column and Cables and the Underflow …

Aptamil Feed Thickener

Aptamil Feed Thickener can be used to thicken standard infant formula products, or specialty formulas. If an infant is on standard formula and requires a thickened feed, Aptamil Gold+ Reflux Infant formula, which already contains a thickener, is recommended. How to use Aptamil Feed Thickener – Learn More. Reminder:

bridge type nventional thickener overflow launder

The Conventional Thickener Solid Liquid Separation The Conventional Thickener Click on the thumbnail to maximize the image: Description The bridge type; This layer finds its way into the overflow launder and contaminates the clear overflowing liquid with fines This problem is solved by incorporating a scum baffle that retains the scum layer so that a …

DEWATERING * CONVENTIONAL AND HIGH-RATE …

A comparison of factors associated with conventional and high-rate thickeners is summarized in the table. As slurry is fed to a high-rate thickener, dilute flocculant is …

Theory and Application of Thickener Design

Unlike conventional thickener area calculations, the test procedure demonstrates the dependence ofthe flux curve on the system feed flux. At a given feed flux, there was good agreement between the solids flux curve determined by the method and continuous sedimentation results. The widely used method of Kynch was found to be

Thickener Selection Parameters

High-rate thickeners are designed to provide roughly 12 times the throughput of conventional machines of similar size. The key features for high-capacity thickeners are …

Review of Equipment for Mine Waste: From the conventional Thickener to

One sample consisted of the thickener feed slurry (nominal − 1.2 mm) and the other consisted of the thickener underflow slurry. A third sample was prepared by ...

High Capacity Thickener

High Capacity Thickener. Previous. Next. Conventional practice is to add flocculant as a dilute solution to the feed slurry in a launder or feed pipe, possibly using …

Feedwell is the heart of a thickener

The feed flow energy is dissipated and converted to radial flow out of the inner feedwell. The inner feedwell ports are sized to have the design exit velocity for the range of feed volumetric flow rate experienced at the thickener. The fact that the feed into the outer feedwell is directed radially provides a large volume with

Review of Equipment for Mine Waste: From the conventional Thickener to

Table II - HCT vs. Conventional thickener: Uranium pulp (Roger Summerhays, 1979) The high density underflow in the (HDT) thickeners began to replacing the conventional thickeners and HCT`s in the management of mining waste, as treatment needs grew with large mineral deposits put in operation in recent years.

Raking in gravity thickeners

The pilot-scale thickener facility used in this study is a closed loop system and is shown schematically in Fig. 1.A sample of slurry is mixed continuously in a 4.5 m 3 mixing tank, and pumped out of the mixing tank underflow into the pilot thickener. The thickener tank is a 2 m diameter by 2 m high side wall tank with a 14° floor and a small …

High Rate Thickeners

There are two basic types of high rate thickener units: Lamina or tube settlers and solids recirculation units Lamina Thickeners They contain space-cutting baffles that intercept settling paths at many levels. Solids settle out onto the baffles and are removed from suspension after settling only a short distance. Where and to the extent …

Tailings Thickener Improvements at Sentinel Copper …

comes at a price and modern high-rate thickeners can be more difficult to operate than large conventional-type thickeners. This leads to a situation where many thickeners are running under conditions far from the optimum, meaning high flocculant consumption, limited capacity, poor underflow density and high solids in the overflow. At Sentinel

Thickener Operation and Flocculant Application

Table of Contents At start-up, the relatively high level of feed solids, 17-20%, called for in design led to difficulties in achieving the degree of flocculation necessary to meet required settling rates. It was …

Conventional Clarifier

Consider the WesTech conventional segmented blade for superior clarifier operation in a conventional clarifier. Learn more here. ... Density Current Baffle: ... (EDI): Converts the high energy feed from the center column into a lower velocity flow that is gently mixed in an impinged or tangential flow into the flocculating feedwell to maximize ...

Circular Clarifiers and Thickeners

Monroe Environmental builds Primary and Secondary Circular Clarifiers for industrial and municipal wastewater treatment, as well as Flocculating Clarifiers and Solids Contact Clarifiers for clean water or potable water applications. Our experienced staff will provide high efficiency, low maintenance systems that will provide the highest return on investment.

Froth control

on the thickener surface. Best suited to pumped feed and where the feed pipe is not laundering. Level 2: Froth booms, bridge sprays, launder froth baffle and DA tank Applied for more challenging froth where laundering feed pipes may be present and deaeration of the feed is essential. Level 3: Froth skimmer, bridge sprays, launder froth baffle, DA

Froth Control Solutions

Froth booms, bridge sprays and launder froth baffle . This is used for low froth applications designed to mobilize froth on the thickener surface. Best suited to pumped feed and where the feed pipe is not laundering. Level 2. Froth booms, bridge sprays, launder froth baffle and internal DA tank.

Thickener Selection Parameters

In conventional thickeners, feed wells are cylindrical, and frequently baffled. In Lamellas and other types of thickeners, the feed wells can be an adjacent tank, a rectangular channel adjacent to the …

Thickeners

Feed, overflow, and underflow systems capable of handling additional material when other thickeners are out of service. Feed and underflow material settling characteristics that may require special rake construction such as blades located a distance below the rake arms on posts or spikes on the blades to cut into packed solids.

Fiberglass (FRP) Trough & Launder Trough Systems | Enduro

50 % stronger than conventional 1/4" units, Enduro reinforced plastic troughs are built with laminated layers of 24 oz. woven roving throughout. Its glass fiber reinforcing content and alignment produces outstanding rigidity and the ability …

Thickener upgrade incorporating feed system innovations

This modification facilitated dilution of the thickener feed stream, reducing it from a maximum of 16.6%w/w to 10.3%w/w feed solids concentration. ... The feed slurry entered the thickener with high-velocity launder flow, carrying substantial volumes of froth and entrapped air. This resulted in surging, burping, splashing, and a challenging ...

Sedimentation

A typical outlet zone begins with a baffle in front of the effluent. This baffle prevents floating material from escaping the sedimentation basin and clogging the filters. After the baffle comes the effluent structure, which usually consists of a launder, weirs, and effluent piping. A typical effluent structure is shown below:

How a Thickener Works

Laboratory settling tests on the feed to the decantation thickeners have shown that sulphates—whether added in solid form, as, for example, (NH4)2SO4, or present in the barren solution, as …

Thickeners – Nesans Mining and Automation Private Limited

The input slurry flow rate is monitored to keep the handling capacity of the thickener under check and to avoid over loading of the thickener. The underflow flow rate is also monitored to keep the mass-balance of the thickener. Rake torque Sensor : The Rake arm of the thickener is suspended from above the feedwell of the thickener.

deep cone thickener baffled feed launder

These thickeners differ in the way they are built. Some examples of basic differences are: • Bridge supported • Center column supported • Traction drive The feed stream is brought to the center of the thickener in a pipe or open launder and enters the feed well, which is designed to minimise turbulence resulting from the. Get Price

Gravity clarification and thickening

Both the filtrate and the thickener overflow are usually recycled into the plant feed as shown. 5.1.1 Design and scale-up of conventional one-pass clarifiers The design overflow rate (flow rate per unit area of liquid surface) in conventional one-pass clarifiers is usually from 1 to 3 m/hour, depending on the degree of flocculation.

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