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Basically there are two groups of thickeners which differ in their rake driving mechanisms: Centrally driven; Peripherally driven ; The following tree shows the two main thickener groups and their various configurations: The Central Drive Mechanisms. There are two methods of supporting the heavy drive with its shaft and raking arms:
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It is the first of these functions that is the focus of this paper. Although thickener rakes are essential in the transport of bed material to the underflow in conventional thickener designs, and effective rake design and operation can reduce the likelihood of rat-holing, little is known about transport due to rake action in thickeners.
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Rota-Rake ® Solids Thickener. The Graver Rota-Rake® Clarifier is a horizontal flow sedimentation and thickening unit for the efficient separation of suspended solids from liquids by gravity. Designed for maximum separation, positive slude …
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Either requires a scraper assembly attached to the rake structure to keep the material moving. ... Conventional Thickener For Kaolin Good Price Conventional thickener for fluorite high output HiFlo High Rate Paste Thickeners WesTech Engineering High pressure grinding rolls HPGRs HRC 65 Conventional clarifierthickener drive system high normally ...
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Contact a supplier or the parent company directly to get a quote or to find out a price or your closest point of sale. ... Conventional Gravity Thickener Overview: WesTech's complete line of high rate, heavy duty thickeners offers the most advanced designs for use in the industry. ... The shaft drive unit is equipped with a rake lifting device ...
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DELKOR's thickener is a proven performer across a variety of applications ranging from the mining and minerals industry to industrial, chemical, water treatment and wastewater industries. ... With units of up to 100 m in diameter having been installed, the benefits of our DELKOR conventional, high-rate, high-density and paste thickeners include ...
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This thesis has established a mathematical model for the prediction of the torque of a thickener mechanism as a function of the rheology of the raked slurry, and the geometry and velocity of the rake arm structure. The current method for torque (T) estimation is to use an empirical equation: T = KGd2 where KG is an empirically determined value and d is the thickener diameter. This …
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A key component of most thickener operations is the motion of a thickened sediment across the floor of the tank to an underflow, usually located centrally. In most conventional thickeners and in many high rate and paste thickeners, this transport is aided by a set of two or four rake arms (see the schematics in Fig. 1, Fig. 3). Each arm ...
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Wa offers conventional thickeners, Hirate thickeners, Ultra Hirate thickeners and Paste thickeners. Thickener diameters up to 35m are available with the rake mechanism supported …
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High-rate thickeners are designed to provide roughly 12 times the throughput of conventional machines of similar size. The key centre column of steel or concrete, and are practical for thickeners up to 135 m in diameter. The centre column supports the drive, rake cage and rake mechanisms, while the truss bridge, extending from. Get Price. Get Price
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Operating logic allows for customization of the unit for plant needs, including the ability for the Thickener to shut down without an operator being present during extended hours of operation. The hydraulic drive gives an accurate sense of torque on the rakes. At high torque conditions, a rake lift will activate to draw the rakes up from the mud.
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Thickener rakes are essential in the transport of sediment bed material to the underflow in conventional thickeners, however very few studies of bed transport have been published.
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Mechanical model of scraper rake torque in deep-cone thickener April 2012 Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) 43(4):1469-1474. Deep Cone® Thickeners. ... Inicio > conventional thickener drive cage price. ThICKENERS - TENOVA. center drive systems capable of 14 MNm of torque. ...
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conventional thickeners. AltaFlo Ultra High-Rate Thickeners The AltaFlo ultra high-rate thickener is a rakeless thickener providing mixing, flocculation, and internal dilution. The AltaFlo also provides clarification and positive sludge collection and removal in a single tank. The AltaFlo typically operates at twice the settling rate of a
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Model LTC The LTC model consists of a number of inclined plate packs installed in a conventional cylindrical thickener tank with a standard centre-drive rake mechanism to remove the thickened sludge. The compact prefabricated plate packs of the LTC design allows the use of very large clarification areas installed in a fraction of the floor area ...
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Conventional Thickeners are generally incorporated in heavy duty applications when the underflow density is high and substantial torques are required to convey the settled solids from the periphery to the central outlet for pumping away.
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Efficiency of raking in gravity thickeners In most conventional thickeners and in many high rate and paste thickeners, this transport is aided by a set of two or four rake arms (see the schematics in Fig. 1, …
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The rake arms are buried in mud, and the feed will have to be cut until the thickener has been unloaded. When unloaded, the arms have to be raised until the thickener mechanism will again turn. Following this, the pump must be speeded up to help draw down the sludge load as fast as possible.
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Separation is effected rapidly because of the system hydraulics, which can be in excess of twenty times the hydraulics of conventional thickeners. As a result of the innovative design and associated hydraulic efficiency, the plant area for the …
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Customers have reduced water to tailings by up to 46% by upgrading their thickener. An Australian gold mine reduced water consumption by upgrading their thickener with E-DUC ® autodilution and E-Volute ™ feedwell systems. The E-Volute feedwell optimizes flocculation and aggregate growth, while the E-DUC feed dilution system minimizes flocculant use and …
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Whether you choose a High-Rate Thickener, a Deep Cone Thickener or one of our other solutions, we'll utilise all our process and materials expertise to optimise the underflow to meet …
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That the mass balance of underflow pumping and rake arms conveyance will not cause a "rat hole" in the discharge cone or conversely a sludge pile-up. ... The Thickener Components. ... The conventional feedwell consisted of a smooth cylinder with no internals but in the early 60's, on a red mud application in an alumina plant in Jamaica, a shelf ...
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Achieve a higher density underflow with our High Compression Thickener. The HCT has been designed to suit customer needs with a deeper solids bed and higher rake torque than our High Rate Thickener or conventional thickeners. Consistent and high-density underflow Maintains a constant solids inventory and solid/liquid interface
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A lifting device is a mechanical attachment to the drive head that lifts the Thickener's entire rake mechanism out of the mud bed. While not always necessary, a rake lift is commonly used to provide some insurance against bogging of a Thickener. Should feed or flocculation conditions change and process control tools are either insufficient or ...
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Rake blades designed for precise removal of solids without disturbing the settled solids. Low maintenance hydraulic drive base with torque and rake position monitoring capabilities. Drive …
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Filtaquip Conventional High Rake Thickeners/concentrators, ideal for large water flows, have a limited height and a large surface area. Equipped with a peripheral scraper bridge system, known as the rakes, scraping the thickened pulp to the …
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Diefenbach thickeners are comprised of a tank, feed pipe feedwell, rake (and pickets, depending on the thickener style), a bridge containing the rake drive mechanism, and a chemical dosing system. The slurry feed enters the …
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Enviro-Clear® Company, Inc. 152 Cregar Road High Bridge, NJ 08829 USA Phone: 001-908-638-5507 Fax: 001-908-638-4636 Email: info@enviro-clear
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The spiral design of our thickener rake arm assembly offers a number of unique benefits that traditional rake arms cannot provide. By delivering a consistent, low-torque action in the high-density underflow, the spiral rake arm reduces power peaks and valleys, and reduces the ratholing that conventional straight rake arms can create.
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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. ... Fitting a rake lift to the existing thickeners would have substantially increased supply ...
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