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thickener sizing

thickener sizing

thickener sizing
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How to Size a Thickener Mineral Processing & Metallurgy · Normally a 25 per cent factor of safety is allowed in determining the thickener area si

thickener sizing

  • How to Size a Thickener Mineral Processing & Metallurgy

    · Normally a 25 per cent factor of safety is allowed in determining the thickener area size Thus, in the above case, 887 (largest of three figures) plus 25 per cent factor of safety, equals 1109 square feet area required per ton of dry solids fed to the thickener per 24 hours If the pulp reached its final density during the 19 hour test, a standard depth thickener· Sizing and Operating Thickeners This paper presents a development of thickening theory which provides a reliable and easytouse method for determining the size of continuous thickeners from batch settling tests It also offers a description of thickenerSizing and Operating Thickeners· This is the method through which the most accurate thickener sizing and prediction of process performance is achieved Most reputable and experienced thickener suppliers have developed a number of dynamic testwork units of various sizes and configurations These dynamic test rigs are essentially scale versions of commercial thickeners, with feedwells, flocculant addition, underflowThickener sizing and the importance of testwork

  • Measuring Settling Rates and Calculating Thickener Capacity

    · The required depth of the thickener may be ascertained by computing the capacity of the thickening zone to contain a supply of solids equal to the total capacity of the tank for the number of hours required to thicken the pulp to the density required in the discharge, and to this depth adding an allowance for the lost space due to the pitch of the drag in the thickener; also from 1½ to 2½ ftThe size of the basic thickener, and feed well dimensions like diameter & depth, even the rake torque and drive sizing is not the hard part The hard part is getting the full scale unit to deposit the thickened slurry evenly and uniformly and ensure that there are no spurious eddy currents rushing around in the quiescent zone The feed system needs to arrest the energy of the incoming feedHow to Size a HighRate Thickener Thickening, Filtering· This is the method through which the most accurate thickener sizing and prediction of process performance is achieved Most reputable and experienced thickener suppliers have developed a number of dynamic testwork units of various sizes and configurations These dynamic test rigs are essentially scale versions of commercial thickeners, with feedwells, flocculant addition, underflowThickener sizing and the importance of testwork

  • (PDF) THICKENER DESIGN, CONTROL AND DEVELOPMENT

    Thickener sizing should account for variability in both the quantit y and quality of feed that is presented to it Testwork data should indic ate the frequency and extent of slowsettling solids· To size high rate and high compression thickeners, dynamic benchscale or pilotscale testwork is the preferred approach However, static cylinder testwork and the application of the Talmage and Fitch construction is still sometimes used The advantage of dynamic testwork is that a reliable relationship is established between the solids flux rate, underflow density and overflow clarity TheTestwork and sizing for paste thickeners InternationalThe thickener area is also required for this calculation Guess the thickener area for the first iteration Several iterations of area may be required to achieve a practical thickener size and pumping rate For a circular thickener with a 1524 m (50 f t) dia: A= Pi r 2 = 1824 m 2 (7)Improve Clarifier and Thickener Design and Operation

  • How to Size a Thickener 德赢世界杯投注,vwin备用网站,vwin

    How to Size a Thickener Previous Next View Larger Image Knowing how to size a thickener and determine the capacity required to handle a predetermined tonnage of a certain pulp, by overflowing a clear solution and obtaining the desired pulp density of thickener discharge, depends upon the settling rate of that particular pulp Thesettling rateof any pulp is easily determined by simple· The dense Thickener solids are raked to the thickener’s underflow cone and are removed via a slurry pump through the underflow pipe Underflow slurry densities can vary based on the type of material being processed, size distribution of solids being settled, or other process factors but as a general rule, range from 3550% solids by weightDifference Between Clarifier and ThickenerThe subject paper addresses the requirements for designing a paste thickener, covering the following topics: • Testwork for thickener sizing • Design of rake mechanisms • Suspension rheology and effect on design 100 Paste 2005, Santiago, Chile Designing for Paste ThickeningArbuthnot, IM and Triglavcanin, RAPaper: Designing for Paste Thickening Testwork and Sizing

  • thickener sizing ashawthing

    Thickener sizing and the importance of testwork Thickener sizing methods Depending on the stage of the project, and whether or not samples of indicative feed material are available, a number of different methods can be used to determine thickener sizing In general, these can be classified as: rule of thumb sizing, cylinder settling tests, and, lastly, dynamic thickener testwork A CriticalFor small thickeners, which are normally of the bridge type, the pumps are positioned at the periphery of the tank and the suction pipe is buried or runs through a pipe sleeve for replacement if necessary The Peripheral Drive Mechanisms Some of the largest thickeners in the world with 200 meters diameter are of the Traction type as seen on the left These thickeners incorporate a centralConventional Thickeners Solid Liquid SeparationThickening is a procedure used to increase the solids content of sludge by removing a portion of the liquid fraction To illustrate, if waste activated sludge, which is typically pumped from secondary tanks with a content of 08% solids, can be thickened to a content of 4% solids, then a fivefold decrease in sludge volume is achieved [1] Thickening is generally accomplished by physical meansCHAPTER 3 SLUDGE THICKENING Marmara

  • How to Size a Thickener 德赢世界杯投注,vwin备用网站,vwin

    How to Size a Thickener Previous Next View Larger Image Knowing how to size a thickener and determine the capacity required to handle a predetermined tonnage of a certain pulp, by overflowing a clear solution and obtaining the desired pulp density of thickener discharge, depends upon the settling rate of that particular pulp Thesettling rateof any pulp is easily determined by simpleThickener sizing The thickener or clarifier area must be sufficient to allow the slowest settling particle to reach the bed of compressing solids or bottom of the tank before its associated liquid has reached the overflow There is a critical concentration in the settling process that the solids will achieve for which the settling rate, and associated upward liquor flow rate, will limit theThickener an overview | ScienceDirect TopicsThickener sizing & the role of testwork – Part one When planning a project that includes thickening technology, a key element is determining the sizing and expected performance for the thickener(s) » Learn More Sizing & Thickening Agents Market worth $207 Billion by 2020 Sizing & Thickening Agents Market worth $207 Billion by 2020 (Sizing: natural, The type and quantity ofthickener sizing – Grinding Mill China

  • sizing of thickener for underflow pumping Mining

    Thickener sizing and the importance of testwork Output Australia | June 2009 Complications with underflow pumping or other intended transportation methods »More detailed Peristaltic Pump to Control Thickener Underflow Peristaltic Pump to Control Thickener Underflow: As well you can typically utilize a pump 1 size smaller when using a single roller design because it moves more· sizing and operating thickeners28 jan 2018 determining the size of continuous thickeners from batch settling tests it also offers a description of thickener operation performance basedthickener designdesign calculations to determine the required thickener area, the most important velocities have been obtained from batch sedimentation tests a slurry with andesliming29 nov 2018batch sedimentation test sizing thickenerThickening in the downward direction to increase underflow density generally to reduce the size of downstream filters or centrifuges Clarification in the upward direction to reduce the amount of fines that report to the overflow to meet: statutory requirements for effluent quality recycled overflow clarity for internal process requirements reduction in loss of product to the overflowThickeners Solid Liquid Separation

  • Thickener Sizing and The Importance of Testwork

    Thickener Sizing and the Importance of Testwork Free download as PDF File (pdf), Text File (txt) or read online for free thickener sizeWhen sizing a highrate thickener, one factor that limits the size and throughput in the unit is the available torque This is particularly true with centerdriven, highrate thickeners The use of a peripheral drive, like that on the Titan, takes advantage of the long ‘lever arm’ of the raking mechanism, instead of being limited by it like a center drive unit Experience in sizing, designTitanTraction™ ThickenersHighrate thickeners that are built as dedicated machines are available in sizes up to 40 meter diameter but retrofits of conventional thickeners are often larger in size When viewed from the outside highrate thickeners look very much like conventional machines except that their tanks have a greater height to diameter ratio Their height is derived from test work by calculating retentionHigh Rate Thickeners Solid Liquid Separation

  • 德赢世界杯投注|vwin备用网站|vwin移动端

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