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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 …
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In some applications, underflow with the co nsistency of paste can be achieved b y high rate, high rate rakeless, or high density machines. However, deep thickeners are cur rently the best ...
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Finally, adopting the model, the driving parameters of a deep-cone thickener used in a mine were checked. The results show that the max torque is 633.8086 kN·m, which exceeds the shutdown ...
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The density of the thickener underflow is a good indicator of the balance between the feed rate and the discharge rate. A high density is achieved by allowing the sludge bed in the …
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high-rate thickeners, ... ical model of scraper rake torque in deep-cone thickener, ... rakes and pickets are the essential design elements for high-concentration underflow [19,20].
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a High Rate Thickener. As one can see in Figure 3, the continuous simulation achieved an underflow suspended solids concentration of 59 wt% when the mud residence time is between 4 and 6 hours. This residence time is normally associated with High Density thickeners (High Rate thickeners have residence times less than this).
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Monitoring of the thickener performance for a period of one month in the plant indicated that an average feed rate of 25t/h (dry solids) with solids concentration of 10% could be thickened to an ...
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The more obvious difference is in the front part, that is, the high-concentration underflow via thickeners. ... Achieve a 3% increase in ore recovery rate and a 2% reduction in mining dilution rate. FL Deep Cone® Thickener • High concentration (79–81%) long-distance (5188 m) metal mine paste gravity-driven flow transportation ...
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The hierarchical cone thickener is a critical device for paste filling in the mining industry ( Fang et al., 2022, Huan et al., 2019, Tan et al., 2015 ). The current mining and paste-filling industry still faces some thorny challenges. For example, the underflow concentration of the cone thickener system (CTS) directly determines the quality of ...
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Deflector cone and scraper; Break tank; ... Froth can also reduce thickener process performance (overflow clarity/underflow density) and impact the efficiency of adjacent processes such as flotation and filtration. ... High Rate Thickeners are the result of continuous development and innovations, enabling guaranteed process performance and ...
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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.
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Filtaquip Conventional High Rake Thickeners, ideal for large water flows, have a limited height and a large surface area. Equipped with a peripheral scraper bridge …
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High compression thickeners 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 …
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encompasses a unique underflow cylinder scraper to ... the thickeners to be installed in various challenging applications where the highest underflow densities are required. 8. 9 High-rate bolted thickener for iron ore, 18 m in diameter ... • Easily replaceable discharge cone High-rate bolted thickener for Pb/Zn tailings, 35 m in diameter. 10
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High Rate Thickeners. Previous Next. Field Proven. Zero Failures after 50 installations. ... Consistent and high-density underflow. Careful cone scraper design provides optimal "live" underflow pump feed. Feed Dilution and Froth Removal (FRAD). We have eradicated the guesswork out of feed dilution. Our dilution system used our Solvent ...
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A number of new copper plants are utilizing high density tailings thickeners. These improve water recovery and minimize tailings impoundment requirements. High density thickeners can typically achieve 5–10 wt% higher underflow solids compared to a high rate thickener, achieving densities that can still be moved with centrifugal pumps.
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We build our spiral rake assembly for thickeners in a high-strength tubular construction that in and of itself will enable an increase in underflow density of 2 to 3 wt%, compared …
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Footprint can become a significant CAPEX consideration when excavation costs are elevated. To illustrate, we will assume our high-rate thickeners in Table 8 cost $1 million each. Therefore, all ...
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A large volume of water is consumed during mineral separation. Reducing water consumption and improving water resource management are necessary to achieve environment-friendly development (Klemeš 2012).The dilute suspension is fed into the thickener to obtain high-concentration underflow under the effect of gravity and …
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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.
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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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Proven thickeners that deliver desired underflow density Thickeners work on the operating principles of gravity and particle interactions, with solids settling downwards and liquids rising to the top as they separate. The design of the thickener focuses on providing a high-density underflow while maintaining an acceptable overflow clarity.
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High-density thickeners By adding depth and torque to a high-rate design, high-density thickeners improve underflow densities at a substantially lower cost than deep cone thickeners. Paste/high-density thickeners, ultra-high-rate clarifier-thickeners With more installations in more applications than all of our competitors combined, we are the ...
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ANDRITZ paste thickeners incorporate: • High side walls, steep tank floors and unique feedwell design to enhance settling and promote paste formation to maximize underflow …
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Paste and high density thickeners are designed to produce high underflow solids. By extension, the additional water removed from the underflow reports to the overflow. Hence, these thickeners ...
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thickener deflector cone scraper manufacturer consists of a cylindrical or truncated cone drum, extending across the full width of a channel read more; [chat Online] high rate thickener underflow cone scraper. Thickeners 911 Metallurgist Jun 1, 2016 Thickeners, equipped with the patented spiral scrapers and angle rakes are a High rates usually ...
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In the 1980's, machines known as "high capacity" or "high rate" thickeners were introduced by various manufacturers. These machines are characterized by a reduction in unit area ...
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The feed flux of lead/zinc tailings was 0.254 t·h −1 · m −2 with a flocculant (high molecular weight anionic polyacrylamide) dose of 20 g/t. The thickened solids bed was sheared by a rotating rake at a rate of 0.2 rpm. The underflow was recirculated at a flux of 0.5 t·h −1 ·m −2, which can introduce additional shear stresses into ...
DetailsA 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).
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Hi-Rate Thickener design elements include the following: Mechanical lift mechanism drive head complete with planetary gearbox drive. Two full-radius rake arms and two half-radius rake arms, complete with a cone scraper & MechProTech high …
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Underflow from a High-Rate Thickener will have a yield stress of 10-30 Pa and look like tomato ketchup, while underflow from a High-Density Thickener will have a yield stress of 30-100 Pa and resemble molasses. The Paste Thickener underflow will have a yield stress of 200-250 Pa and look like toothpaste. How to select a Thickener
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