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high rate thickener underflow cone scraper

A thickener mechanism for a settling tank is provided in which separate rake arms with scraper blades sweep an outer and an inner annular area respectively of the tank. Connected with the rake arms for the outer annular area are cone scraper blades which keep the underflow solids in the centre of the tank in motion for ease of withdrawal.

Types Diemme® Filtration's High Rate thickeners cover a wide range of productivity and compliment the performance of Diemme®'s filter-presses, from our smallest to the largest unit. Thickeners are available in "Full-Span-Bridge-Supported" design or "Center-Column-Supported" design (above 40m diameter).

Figure 1 Typical deep cone thickener In some applications, underflow with the consistency of paste can be achieved by high rate, high rate rakeless, or high density machines. However, deep cone thickeners are currently the best technology for achieving maximum underflow densities utilising sedimentation equipment alone.

The AltaFlo™ is a rakeless thickener that uses rapid dewatering in the hindered settling zone to achieve a very high settling rate. The AltaFlo typically operates at twice the settling rate of a high-rate thickener. The geometry of the unit provides for a deep compaction bed, allowing the thickener to achieve relatively high underflow densities.

Jun 25, 2018· The high rate thickener, whether it sits flat on the ground or is elevated, collects mud in a shallow cone, generally between 9 and 12 degrees. The side walls for these units are the lowest for the three styles of thickeners and offer the shortest residence time for the mud to compact.

• Ultra high rate thickeners ... Solids are moved towards the discharge cone. Pickets are fitted for removal of interstitial water, resulting in higher underflow densities. Trench scrapers, in the centre of the tank and attached to the raking assembly, keep the discharge area clean of ...

HiFlo™ High-Rate Thickeners WesTech HiFlo thickeners are used to separate solids from liquids at high flow rates. These rates are 10 to 20 times higher than those of conventional thickeners. AltaFlo Ultra High-Rate Thickeners The AltaFlo ultra high-rate thickener is a rakeless thickener providing mixing, flocculation, and internal dilution.

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.

ANDRITZ thickening and clarification solutions are designed to achieve the highest production rates without compromising efficiency. For all counter-current decantation (CCD) plants: The new and improved ANDRITZ inter-stage mixing and dilution system for CCD circuits helps to reduce the footprint and consequently cut CAPEX while maintaining low operating costs.

Aug 13, 2015· The area that it is discharged into is called the WELL of the thickener. This is circular piece of metal open at both ends. It is deep enough to extend below the surface of the INTERPACE. The interface is that point where the solids of the thickener and the water that is relatively clean meet. The SOLIDS may also he called the UNDERFLOW.

Paste Thickener Design to Achieve Downstream Requirements. Jul 11 2016 · Paste Thickener Design to Achieve Downstream Requirements Posted by Jerold Johnson on July 11 These thickeners recover water and produce an underflow further thickened to a paste in deep cone type paste thickener A significant operational issue is to provide sufficient storage in the paste thickener during times when ...

Mild steel with overflow launder and underflow cone, both with flanged discharge and support legs to position dis-charge cone off the floor, as standard construction. Paint: Standard primer and one coat of enamel. Corrosion Resistance: Thickeners are available with wetted parts constructed of

The high density underflow in the (HDT) thickeners beg an to replacing the conventional thickeners and HCT`s in the manag ement of mining waste, as treatment needs g rew with large m ineral ...

The deep cone thickener (DCT) that produces a high ... the yield stress of underflow in DCT is much higher than conventional high-rate thickeners ... and Mineral Engineering 2015 6 2 119 138 2-s2.0-84944313742 10.1504/IJMME.2015.070372 35 Wang W. Yang J. Determination of slob-scraper output power of deep-cone thickener and the power check ...

The revolutionary Outotec® High Rate Thickener has pioneered and redefined thickening and clarifying methods around the world. ... Connected with the rake arms for the outer annular area are cone scraper blades which keep the underflow solids in the centre of the tank in motion for ease of withdrawal.

EIMCO-K.C.P. High Rate Thickeners are designed to maximize the flocculation efficiency, self-dilution and settling rates. EIMCO-K.C.P. High rate thickeners are designed to provide high underflow concentration with smaller diameter. The high velocity feed is split to two compartments with opposite tangential inlets that are positioned in two ...

High Rate Thickeners 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. Unlike conventional thickeners, high rate thickeners must use flocculants. The basic design of a high rate thickener is below.

High-density thickeners have a deeper sidewall and increased torque to improve underflow densities at a lower cost. Thickening is key to a thriving operation. Sometimes you need extra torque for high underflow densities. The High-density Thickener packs a punch with plenty of extra torque in a design between a high-rate and deep cone thickener.

Efficient thickener is produced by introducing American technique.Efficient thickener can be widely used in metallurgy, mines, coal, chemical industry, building materials, environmental protection and other departments, which has significance for improvement of water returning utilization rate and underflow conveying concentration.

high rate thickener underflow cone scraper. from the conventional thickener to the deep cone for ResearchGate. required for the same solids feed rate. called get price. Dorr Oliver Eimco Thickeners Clarifiers. 2013 10 28Dorr Oliver Eimco Thickeners Clarifiers.

Like the High Rate thickener, ... flocculant dosage and flu x rate on thickener underflow and . ... Shahrebabak Copper Complex Deep Cone Thickeners." IMPC, 20 12, Paper 98.

Ø GNYZ High-rate and High Pressure Thickener. The type of thickener has combined advantages of high rate thickener's large treatment capacity and deep cone thickener's high underflow concentration. Ø XGZ Inclined Plate High-rate Thickener

Description. The High-Rate thickeners became popular in the mid 1980's and are relatively newcomers to the sedimentation line of equipment. As already discussed previously Thickeners are a major component in a plant layout and occupy large spaces which may be saved by introducing high-rate machines. Furthermore, they are normally positioned far away from the center of the plant so to allow ...

Jan 22, 2019· To produce high concentration underflow, the yield stress of underflow in DCT is much higher than conventional high-rate thickeners, resulting in a much higher rake torque demanding for DCT ... "Determination of slob-scraper output power of deep-cone thickener and the power check of capacity expansion," Gold, vol. 35, pp. 48–50, ...

Compression zone data, important in high rate thickener sizing, is also gleaned from static tests. Static thickening tests examine flocculation requirement, hydraulic loading rate, unit area requirements, feed solids concentration sensitivity, and to predict underflow solids concentration for …

High-efficiency deep-cone thickener is a new product used in the process of traditional thickeners. The underflow concentration is up to 300-800 g/L, and thickening tank and rake-type mud scraper: The solid particles suspended in the. thickener underflow cone scraper manufacturer. The overflow type of Ball Mill is designed to overflow and ...

Jun 16, 2017· In high rate thickener (HRT) designs the rise rate or solids loading will dictate the required tank diameter for any given throughput. In high compression (HCT) and paste (PT) applications the bed depth or the mass of solids in the thickener must also be selected to ensure the desired underflow density from the thickener is achieved.

Jan 01, 2016· These improve water recovery and minimize tailings impoundment requirements. High density thickeners can typically achieve 5 â€" 10 wt% higher underflow densities compared with a high rate thickener, achieving densities that can still be moved with centrifugal pumps and pumped to the tailings impoundment without positive displacement pumps.

In this case the pattern would be a deep cone thickener equal to the existing paste thickeners, having dimensions of 10 meters in diameter and 14 meters high in the shell side, which had a scraper mechanism, and which was obtaining a solids content of 30 to 21 underflow in wt% compared to 15-17% obtained in conventional thickeners.

Aug 10, 2021· In general, the underflow produced by the DCT has a yield stress of over 100 Pa, which is much higher than those of the underflow produced …

The Cone Scraper . Underflow Pumping. Pumping of dense underflows has always been a problem on thickeners that handle slurries such as metallurgical concentrates, potash or phosphate and the position of the pumps in relation to the discharge cone can be very critical.

Jun 01, 2016· High-rate thickeners produce the lowest density and yield stress (<20 Pa). The highest yield stress underflow is produced by deep-cone thickeners and can reach over 150 Pa. Source: This article is a reproduction of an excerpt of "In the Public Domain" documents held in …

The concentration efficiency is greatly accelerated, the concentration efficiency is 3 ~ 8 times of the ordinary thickener, and the underflow concentration can reach 60 ~ 70 %. 2. high - capacity drive systems and drive protection systems. The rotary rake frame is driven by a low speed hydraulic motor or drive motor through an efficient ...

The PHOENIX AltaFlo™ Thickener is a rake-less thickener that provides ultra high-rate mixing, flocculation, and internal dilution followed by clarification and positive sludge collection and removal in a single tank. The Thickener's unique internal geometry, a deep sidewall and steep conical bottom provides underflow concentration comparable.

Aug 13, 2015· This is called the CONE. It is from this cone that the thickener underflow is taken. During normal operations of the circuit, the thickener may be pulled empty. That doesn't mean that there isn't any concentrate left in it. It means that the concentrate hasn't settled enough to maintain the necessary underflow density required by the ...

Aug 05, 2020· Cemented paste backfill (CPB) can effectively eliminate the risk of dam break in goaf and tailings pond which used tailings waste. Deep cone thickener (DCT) is an efficient machine for the system of paste preparation, and the concentration of slurry at the bottom is high and distributed unevenly, which will cause too much partial resistance and failure of thickener.

HiFlo™ High Rate Thickeners WesTech HiFlo Thickeners are used to separate solids from liquids at high flow rates. These rates are 10 to 20 times higher than those of conventional thickeners. AltaFlo™ Ultra High Rate Thickeners The AltaFlo Ultra High Rate Thickener is a rakeless thickener providing mixing, flocculation, and internal dilution.

The PHOENIX AltaFlo™ Thickener is a rake-less thickener that provides ultra high-rate mixing, flocculation, and internal dilution followed by clarification and positive sludge collection and removal in a single tank. The Thickener's unique internal geometry, a …

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