All Kusters Water clarifier and thickener drives are designed in accordance with the latest AGMA (American Gear Manufacturers Association) standards to ensure the absolute highest quality. ... Hydraulic Powered Bridge Supported Drive Units (Type-H) ... located within a feedwell. Typically installed on larger clarifiers >60ft.
This type of feed-well is distinguished by the EIMCO E-Duc Self-Diluting Feedwell. An example of this is shown in Fig. 16.3. Figure 16.3 ... Conventional thickener design uses center underflow outlets with the floor sloped at 1:12–2:12 toward the center. ... The center outlet is typically a 45-degree cone on bridge-type thickeners and a ...
feedwell technology • Automated operation, suitable to advanced control systems ... needs with a deeper solids bed and higher rake torque than our High Rate Thickener or conventional thickeners. Consistent and high-density underflow ... your aged thickener. The thickener bridge and mechanism are often upgraded in conjunction with the entire ...
Unfortunately, fluctuations in ore type can significantly change the dosage of flocculant required and require a feedback to the "grams per ton" constant. ... Inventory can be indicated by a simple pressure transmitter located on the floor of the thickener, under the feedwell. Figure 2: Basic control . Figure 3: Flow control
There have been significant developments in thickener types during the past 10–15 years, since the first thickeners of a "high-rate" type appeared. The variety of thickener types and potential underflow density (Newtonian or non-Newtonian), with or without a significant yield stress, allows operators to customize their thickeners.
Thickener units are available up to 90m diameter with a range of sidewall and centre pier mounted bridge designs, electric and hydraulic drives and fully integrated lift and automated control …
Once coming into contact with the flocculant (just inside the truncated inner cone), there is only a short residence time (approximately 10 seconds) before the flocculated particles swirl down and out of the feedwell and into a region of lower shear within the bulk of the thickener. Conventional feedwell designs provide a very wide range of ...
Current research on deep cone thickening is mostly focused on optimizing flocculation conditions [12, 13], thickener structure design and solid-flux calculation [12,14], bed mechanical effect and ...
In contrast to conventional industrial clarifiers, the clarifier at the Freeport WWTP has an unconventional top side feed design (Figure 3). Feed flow enters the clarifier from the side through a feedpipe located beneath the walk bridge but above the water surface. The feedpipe gets submerged under the water surface near the feedwell.
The principle of a thickener is simple: a feedwell generally receives the tangential feed stream and then transform it to a slow vertical downward flow to the body of the thickener. ...
5.2.2 Applications, construction and types of gravity thickeners Most of the applications of gravity thickeners are in mineral and coal processing, and in waste water treatment. ... such units are referred to as bridge machines. Bridge thickeners usually do not exceed 25 to 45 m in diameter. ... is the Supaflo High Compression Thickener 22 ...
Computational fluid dynamics (CFD) has proved to be an invaluable tool in achieving better performance from thickener feedwells (Johnston et al., 1996, Farrow et al., 2000, Farrow et al., 2003, Kahane et al., 2002, White et al., 2003).Understanding the flows within a feedwell is of critical importance to the overall thickener performance, as this is where most …
The feedwell performance in gravity thickeners and clarifiers relies on the efficient mixing between solid particles and flocculant to achieve effective flocculation, as well as energy dissipation ...
Retrofitting two conventional tailings thickeners with the latest Outotec Vane Feedwell™ Outotec Vane Feedwell™ (Thickener retrofitting) ... The type of tailings particles affects the flowability and stability of the flocculation. When the shape of the tailings particles is more round, the friction between particles is smaller, which ...
's thickener Vane Feedwell incorporates a total of seven global patents into its unique design. One of the main design features is the interconnected upper and lower zones. The upper zone, into which feed, dilution water, and …
Improve performance and extend the life of equipment by upgrading your aged thickener. The thickener bridge and mechanism are often upgraded in conjunction with the entire feed …
We offer beam- or truss-type bridges, depending on thickener diameter. In the bridge-supported design, suitable for thickeners up to 50 m in diameter, the drive is supported by the bridge, …
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 the feedwell design and the feed slurry dilution method. Our patented E-Volute™ feedwell offers Computational …
During thickener operation, feed enters the feedwell, via a feed pipe or open launder. In order to promote settling, it is increasing to dissipate this energy. In some cases, flocculants or coagulants are added to the feed to agglomerate …
Currently, the most widely used circular tanks are center feed type (see Figure 2). In these tanks, influent flow enters through a feed pipe located in the center of the tank and into a feed well. The purpose of the feedwell is to provide uniform radial distribution
High rate thickeners are designed specifically to maximise the flocculation efficiency of flocculants. They differ from conventional thickeners in feed well design, size and control. …
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 entering the feedwell tangentially A 4 m open feedwell with an added shelf and a single
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 the feedwell design …
Thickener Mechanism The mechanism consists of the bridge, drive and ancillaries, lifting device, feedwell, torque tube and rake arms with blades. Bridge Bridge designs are available in a truss type or castellated beam, based on the application, thickener diameter and location. The MIP designs consider not only the customer's
The common thickener underpins the performance of most hydrometallurgical facilities. Thickeners are simple, reliable, effective and efficient-under the right conditions.
Conventional thickener feedwell designs have two main shortcomings: short circuiting, where the feed stream momentum carries the flow prematurely down and around the feedwell, past the shelf and deflector, and out of the feedwell; and inefficient flocculation, where only a small area around the inlet of the feed provides good mixing. ...
Both High Rate Thickeners (HRT & HRT-S) come with Reactorwell™ technology. Reactorwell™ is a new generation feedwell with high solids retention and mixing efficiency that eliminates feed short-circuiting. Reactorwell™ offers low shear for ideal floccule growth, even discharge symmetry as well as excellent feed preparation.
thickener feedwell design (Triglavcanin 2008, Heath & Triglavcanin 2010, Nguyen et al. 2006, Nguyen et al. 2012, ... Conventional centrifugal pumps are designed for higher heads (~10-50 m) and are consequently inefficient ... and must be accommodated on the thickener bridge. Flow independence from head.
The term "conventional thickener" refers to those tanks with a shallow base slope and a relatively shallow depth of sediment, and is the type of equipment that is the focus of this study. Material that settles in a conventional thickener moves towards the discharge partly under the action of gravity and by mechanical transport using rakes.
Thickener Mechanism The mechanism consists of the bridge, drive and ancillaries, lifting device, feedwell, torque tube and rake arms with blades. Bridge Bridge designs are available in a truss type or castellated beam, based on the application, thickener diameter and location. I The MIP designs consider not only the customer's
حقوق النشر © 2024.Artom كل الحقوق محفوظة.خريطة الموقع