dewatering thickening optimizing pre leach thickeners

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  • optimizing pre leach thickeners Thickening, Filtering

    Hello there, am interning at a gold mine where there are problems with the clarity of the overflow of the preleach thickeners Initially, only flocc was used at 01% strength Now we are testing a coagulant as well at different dilutions on the plant The clarity has improved over the 2 weeks wTypical Polymer Doses for Dewatering 0 5 10 15 20 25 30 e s se s e s Waste Activated Aerobic Digested Anaerobic Digested on Equipment / Sludge Type Polymer Dosage, lb/ton EPA 832F00053, September 2000 24 Polymer Types • Polymer is used for sludge conditioning and to enhance settling, thickening, and dewatering • Electronic charge Thickening and Dewatering OptimizationSLUDGE’THICKENING’AND’ DEWATERING’WASTEWATER OPTIMIZATION’SYSTEMS’ JulieAHellmann,PE–Hach RegionalSalesManagerSLUDGE’THICKENING’AND’ DEWATERING’WASTEWATER Oct 01, 2006  Dewatering reduces transportation and disposal or drying costs, while at the same time limiting any adverse effects on the environment Reliable, predetermined thickening concentration reduces maintenance costs and power consumption, ensuring greatest cost efficiencies in the overall process Download : Download fullsize image Figure 1Dewatering and thickening solutions optimize wastewater thickening and dewatering, as highlighted in Figure 1 Figure 1 Typical Water Resource Recovery Facility Thickener Thickening Centrifuge Capacity achieve a volume reduction and to produce a 100400 gpm 200900 gpm 301,500 Monitoring and optimizing chemical dose is recommended to minimize operating costsFACT SHEET WEF Home

  • Outotec Thickening technologies

    Outotec® Thickening technologies Leading edge technologies for thickening and clarifying Outotec is a global leader in the design, fabrication and supply of thickening and clarifying solutions for the minerals industry The revolutionary Outotec® High Rate Thickener has pioneered and redefined thickening and clarifying methods around the worldThus will be a best solution to the thickener settling rate Yes, Ca being divalent, acts as a coagulant Floculant is normally required for optimum settling rates Best! I am agree, in a cyanide leach circuit in my previous job in thickening stage we added CaO in slurry form for slime control, like a How pH affects thickener settling rate Thickening Dewater slurry of prethickened solids from a pumpable, liquid phase, to a solid, conveyable dry cake slime, and dewater aggregates and granular tailings from mining and dredging Thickening Dewatering Chemicals Enhance dewatering and thickening processes with polymers such as flocculants and coagulants HiFlo™ HighRate ThickenersThickening – Clarification – PHOENIX Process Equipmentmolecular weight are typically used for thickening and dewatering solids separation processes Figure 3 A Depiction of a Floc Formed by a Cationic Polymer Chain Bridging the Solids Particles Reprinted with permission from UGSI Chemical Feed Inc • Applying polymer prior to a thickening or dewatering process is also called “conditioning”UNDERSTANDING POLYMER FOR THICKENING AND 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 belowThickening Resource Book

  • TOP Paste Thickener Optimization Package

    TOP™ Thickener Optimization Package Overview: WesTech Engineering has taken the next step in advancing thickener technology with our Thickener Optimization Package (TOP™) The TOP thickener design approach adds ten innovative features to the thickener The Outotec Paste Thickener is best suited to applications requiring a high degree of dewatering, such as: Minerals tailings applications; Mine backfill; Preleach and CCD circuits; Outotec Paste Thickening Technology is designed to suit each project, Paste Thickener OutotecTwo processes can be used to thicken sludge: Static thickening, by gravitational settling Static thickening calls on conventional and innovative techniques, such as Drainis Turbo that eliminates the water at speeds higher than the conventional speeds, thereby optimising the downstream dewatering Sludge thickening and dewatering SUEZ GroupThe Outotec Paste Thickener is best suited to applications requiring a high degree of dewatering, such as: • Minerals tailings applications • Mine backfill • Preleach and CCD circuits Outotec Paste Thickening Technology is designed to suit each project, because we understand that OUTOTEC 2ND GENERATION PASTE THICKENERPreDigestion Thickening use of the volume in the digester, the surplus sludge is usually thickened to 5 to 8 percent dry solids, depending on the pump capacity and thickening technology used polymer consumption of 24 lbs/ton (12 kg/ton) Thickening and dewatering process ® = registered trademark in various countriesFLOTTWEG OSE THICKENING CENTRIFUGES Optimizing

  • SEPARATION EASY AND EFFICIENT SLUDGE THICKENING

    efficient sludge thickening PRINCIPLE The PowerDrum thickeners ensure dynamic thickening by rotating sludge continuously They are specially designed for predigestion treatment (for primary, secondary, or tertiary sludge) or when land liquid spreading is planned The PowerDrum may also be used to lower the hydraulic capacity of the dewateringMay 13, 2019  Outotec, which is known for developing paste thickeners and delivering related projects, said the key features of highdensity thickeners include effective flocculation, dewatering, raking, prevention of rotating mud beds, process control and the discharge of thickened solidsOutotec improves paste thickening technology Mining Filtration and thickening are areas of mineral recovery technology that are often overlooked Nonetheless, they represent an important component of the entire process, since without dewatering, it would be hard to produce concentrates to transport specifications while water recycling from tailings streams is becoming increasingly important as energy costs for pumping steadily increaseDewatering: An Increasingly Important Mineral Process E MJLocation of the thickener in a wastewater treatment plant is important If sludge is to be digested, thickening a blend of primary and waste activated sludge is a good practice If these sludges are to be dewatered, then they should be thickened separately and mixed immediately before dewatering [3] Sludge Thickening vs DewateringCHAPTER 3 SLUDGE THICKENING MimozaFor each site, it is important to optimize the use of polymer to be cost effective and still reach an acceptable goal for solids dryness (For example a plant thickening 800,000 gallons per day of activated feed slurry at 1%DWS up to 8% pumpable slurry with a clear centrate, would require approximately 66 to 100lbs per day of polymer)Biosolids, Sewage Sludge, Sludge Thickener • Langley

  • Outotec looks for consistent and efficient dewatering with

    May 13, 2019  Outotec has a history of developing paste thickeners, as well as the design and delivery of largescale paste thickening projects “This has given us a deep understanding of the key aspects of highdensity thickeners, including effective flocculation, dewatering, raking, prevention of rotating mud beds, process control, and the discharge of Outotec® Thickening technologies Leading edge technologies for thickening and clarifying Outotec is a global leader in the design, fabrication and supply of thickening and clarifying solutions for the minerals industry The revolutionary Outotec® High Rate Thickener has pioneered and redefined thickening and clarifying methods around the worldOutotec Thickening technologiesTM– Gravity Belt Thickener 2 3 6 5 11 5 Belt Drive: Capable to prevent blinding/fouling of these critical components 11 Thickening Sludge Dam: Adjustable height sludge dam provides additional dewatering to optimize sludge thickening GBT TM– Gravity Belt Thickener Unique Features and How they Work New Plow Design The Gravity Belt Gravity Belt Thickener Custom Sludge Dewatering The new paste thickener provides ease of operation and reliability for applications requiring a high degree of dewatering, such as minerals tailings, mine backfill, and preleach and counter current decantation circuits, according to the companyOutotec ACT Thickener Optimizer Archives International The new paste thickener provides ease of operation and reliability for applications requiring a high degree of dewatering, such as minerals tailings, mine backfill, and preleach and counter current decantation circuits, according to the companyOutotec ACT Thickener Optimizer Archives International

  • Paste Thickener Outotec

    The Outotec Paste Thickener is best suited to applications requiring a high degree of dewatering, such as: Minerals tailings applications; Mine backfill; Preleach and CCD circuits; Outotec Paste Thickening Technology is designed to suit each project, because we understand that the drivers for each project will differ eg: Environmental; Water Outotec thickening solutions As the global leader in the design, fabrication, and supply of thickening and clarifying solutions for the minerals industry, the Outotec® High Rate Thickener has pioneered thickening and clarifying methods around the world Outotec Vane Feedwell™ incorporates a cuttingedge design and is the major innovation in theOutotec solutions for tailings dewateringefficient sludge thickening PRINCIPLE The PowerDrum thickeners ensure dynamic thickening by rotating sludge continuously They are specially designed for predigestion treatment (for primary, secondary, or tertiary sludge) or when land liquid spreading is planned The PowerDrum may also be used to lower the hydraulic capacity of the dewateringSEPARATION EASY AND EFFICIENT SLUDGE THICKENINGFiltration and thickening are areas of mineral recovery technology that are often overlooked Nonetheless, they represent an important component of the entire process, since without dewatering, it would be hard to produce concentrates to transport specifications while water recycling from tailings streams is becoming increasingly important as energy costs for pumping steadily increaseDewatering: An Increasingly Important Mineral Process E MJLocation of the thickener in a wastewater treatment plant is important If sludge is to be digested, thickening a blend of primary and waste activated sludge is a good practice If these sludges are to be dewatered, then they should be thickened separately and mixed immediately before dewatering [3] Sludge Thickening vs DewateringCHAPTER 3 SLUDGE THICKENING Mimoza

  • FLOTTWEG OSE THICKENING CENTRIFUGES Optimizing

    PreDigestion Thickening use of the volume in the digester, the surplus sludge is usually thickened to 5 to 8 percent dry solids, depending on the pump capacity and thickening technology used polymer consumption of 24 lbs/ton (12 kg/ton) Thickening and dewatering process ® = registered trademark in various countriesThe new paste thickener provides ease of operation and reliability for applications requiring a high degree of dewatering, such as minerals tailings, mine backfill, and preleach and counter current decantation circuits, according to the companytailings thickening Archives International MiningFor each site, it is important to optimize the use of polymer to be cost effective and still reach an acceptable goal for solids dryness (For example a plant thickening 800,000 gallons per day of activated feed slurry at 1%DWS up to 8% pumpable slurry with a clear centrate, would require approximately 66 to 100lbs per day of polymer)Biosolids, Sewage Sludge, Sludge Thickener • Langley TM– Gravity Belt Thickener 2 3 6 5 11 5 Belt Drive: Capable to prevent blinding/fouling of these critical components 11 Thickening Sludge Dam: Adjustable height sludge dam provides additional dewatering to optimize sludge thickening GBT TM– Gravity Belt Thickener Unique Features and How they Work New Plow Design The Gravity Belt Gravity Belt Thickener Custom Sludge Dewatering Copper Thickening / Dewatering A high rate thickener thickens the copper concentrate A vacuum drum (or other) filter dewaters the copper concentrate further before refining or storing until sale it is necessary to concentrate the milled ore slurry in a preleach thickener prior to the leaching process in order to reduce dilution Acidic Mineral Processing Solutions WesTech Engineering, Inc

  • Outotec Introduces 2nd Generation Paste Thickener for

    May 23, 2019  The new paste thickener provides ease of operation and reliability for applications requiring a high degree of dewatering, such as minerals tailings, mine backfill, and preleach and CCD circuits The technology is customized to address each operation’s unique drivers, which can include environmental concerns, water recovery, regulatory Jul 19, 2018  Several dewatering techniques were investigated, including settling by using two different thickeners (high rate thickening and paste thickening), pressure filtration, as well as classification by (PDF) Dewatering of Copper Flotation Tailings: Effect of Outotec® Thickening technologies Leading edge technologies for thickening and clarifying Outotec is a global leader in the design, fabrication and supply of thickening and clarifying solutions for the minerals industry The revolutionary Outotec® High Rate Thickener has pioneered and redefined thickening and clarifying methods around the worldOutotec Thickening technologies