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thickener underflow in mining

Thickener underflow samples were collected from two bituminous coal-cleaning plants located in Pennsylvania AltaFlo High Rate Thickeners With excellent overflow clarity and underflow density similar to or better than conventional high-rate thickeners the AltaFlo has a unique place in the Get Price Thickener control systemGet price


Clarifier Overflow Filtration

Upflo filtration offers several advantages including in-depth filtration the purpose of these filters is to strip 100mg/l from thickener overflow liquor The effective air scour/backwash cycles indicates that the small amounts of excess polymer are being flushed to drain Get price


Controlling thickener underflow rheology using a

Controlling thickener underflow rheology using a temperature responsive flocculant George V Franks Corresponding Author The reduction in underflow rheology which results when using the temperature responsive polymer as flocculant is PNIPAM produces higher concentration underflow but lower clarity overflow and most importantly Get price


A Statistical Model for Slurry Thickening

slurry) in the gravity thickener requires screening a number of synthetic polymers in the bench-scale laboratory tests This allows the selection of appropriate polymers for a given slurry composition solid particles (size distribution mineralogy and surface charges) and liquid medium (pH electrical conductivity and electrolyte concentration) Get price


Optimization of thickener performance

The combination polymers produced the best quality of overflow and underflow For this polymeric condition change in the feed solids concentration was the most sensitive factor in the maintenance of the overflow quality and the feed pH was the most sensitive factor for the maintenance of underflow quality Get price


American Water College 2010

1 Chemical conditioning of sludge (too much polymer can blind belt and cause washout) 2 Belt speed (ideal speed is the slowest speed that can be maintained without washing out the belt) 3 Belt size and type 4 Hydraulic and solids loading Possible Causes of Gravity Belt Problems 1 Polymer dose too low 2 Polymer dose too high 3 Get price


Clarification floatation cells

the flotation-filter unit As the same velocities prevail in a conventional flotation unit and in a filter (5-12 m h –1) the idea was conceived to use the lower part of the flotation unit as the top of a filter (figure 34) instead of the traditional cell floor a filtering medium would be laid over a Get price



Evaluating the performance of a thickener often involves mass balance calculations Overflow plus underflow solids equals influent solids Also the sum of overflow and underflow volumes is equal to the quantity of applied sludge and supplementary dilution water Figure 4 Cross sectional view of a gravity sludge thickener Example 1Get price


Separation of WEEE plastics resorting gravity separation

Separation of WEEE plastics resorting gravity separation and froth flotation polymers take hundreds of years old to decompose when being place in landfill their shape size and density to the overflow product This technique is very effective in the separation ofGet price


Improve Clarifier and Thickener Design and Operation

In Table I of the July article improve Clarifier and Thickener Design and Operation by Joel Christian (pp 50-56) the titles Vi and TSS are reversed The first TSS is 3 1 and the first Vi is 6 045 In the overloaded case on p 55 the underflow c oncentration should be 240 kg/m 3 not 140 Get price


the polymer in thickener over flow floatation

Polymer Dosage Control in Dissolved Air Flotation It was found that below a polymer dose of about 4 mg/g of dry solids for the batch unit there was no improvement in the thickening performance (or float solids concentration) that no residual polymer could be detected in the effluent and that there was no effect on the negative Zeta Get price


Process Flow

If you need sludge dewatering press drying system or any other sludge treatment AMCON is the solution [Volute] dewatering press we have invented and developed is clog-free even with oily sludge It is water- and energy-saving and eco-friendly in design The maintenance is easy Please contact us Get price


Sludge Thickening

The steeper slope reduces the raking problems by providing more gravity A cross sectional view of the typical Gravity thickener is given below 2 Dissolved Air Floatation The objective of flotation-thickening is to attach a minute air bubble to suspended solids and cause the solids to separate from the water in an upward direction Get price


brought to you by royceu

What is an unacceptable range of TSS in the liquid overflow of a gravity thickener? ? 1 to 3 mg/l ? 5 to 15 mg/l ? Above 100 mg/l ? 20 to 30 mg/l Given the following data what is the depth of the cone from the SWD to the bottom of the cone? • Gravity Thickener is 50 Feet Diameter • Sludge Blanket Depth is 3 Feet • Floor Slope is 2 12Get price


Coal preparation plant

The lighter particles are caught in an upward stream and pass out as clean coal through the cyclone overflow outlet via the vortex finder From the overflow orifice the coal goes into the overflow chamber and is discharged to the next stage of the process Fluid Get price



reduced polymer usage DELKORs patented Forced Dilution system is also capable to adding additional overflow liquor into the feed of a thickener using a low head axial pump to drive dilution water into the feedwell The main advantage of the Forced Dilution system is that it takes the overflow liquor from a large surface area - ne-Get price


About Dissolved Air Flotation

DAF Corp offers a full line of industrial wastewater treatment support components to a DAF clarifier that compliment the FC Maximizer and RC UniMax clarifiers These components include equilization tanks oil-water separators mixing tanks tube bundles and polymer feed systems Click here to find out more about our products Get price


Low Cost Mining Floatation Tank

Low Cost Mining Floatation Tank Zen Float Tent The First Affordable Isolation Tank for Home May 27 2014 The price tag doesn't include the 800 pounds of epsom salt you'll need (or the LSD) but it sounds pretty reasonable considering the competition's steep pricing A single float session averages $70 at most float centers which Get price


thickener wet overflow flotation flow

the polymer in thickener overflow floatation the polymer in thickener overflow floatation a b emultech pvt ltd drilling chemicals waste water addsorb cw series of polymers are available for thickener as well as clear water from the polymer in thickener over flow Get price Get price


Thickeners — Types Working Principle Applications

8-8-2018In very simple words a thickener is a machine that separates liquid from solids It is defined as a method of continuous dewatering of a dilute pulp wherein a regular discharge of a thick pulp takes place which is of uniform density concurrently with an overflow of clarified solution The solidsGet price


Efficient Thickener

Thickener Used for Minerals/Ores Thickening Adding the flocculants to increased sedimentation particle size thus speeding up the sedimentation velocity Slime that sediment in the bottom of the thickener is discharged by the harrow scrapping continuously and clean overflow from the upside Get price


Performance optimization of paste thickening

Performance optimization of paste thickening Mika Kosonen Outotec Finland Sakari Kauvosaari Outotec Finland Excessive amounts of polymers are used as a precaution to compensate for changes in material to detect the clarity of thickener overflow As such it does not directly tell the solids content Get price



The slurry is then introduced at a controlled velocity into the Thickener feedwell where a flocculating agent is added from a polymer make-down system and is distributed evenly into the Thickener settling zone Flocculated solids settle and along with gravity are assisted to the center of the Thickener by the rake mechanism Get price


Pulp paste and putty thickeners and flocculants for high

1-1-2017Pulp paste and putty thickeners and flocculants for high density underflows – part one By Peter Bartsch MAusIMM(CP thickener overflow clarity or decrease the flocculant dose or PA Fawell PD Farrow JB 2006a 'Polymer flocculation of Get price


Belt filter

Applications The belt filter is mainly used for dewatering of sludge and slurry and juice extraction from apples pears and other fruits as well as grapes for winemaking etc Belt filters are used both municipally and industrially in a range of areas including urban sewage and wastewater treatment metallurgy and mining steel plants coal Get price


thickener flocculant control valve manufacturer

thickener flocculant control valve manufacturer Outotec thickeners and clarifiers operate in mineralsSampling point with manual conventional thickener control 20181011enspenspA Flocculant like the Dry polymer Bridge Type Conventional Thickener Rake Drive Scum Baffle Overflow% as compared to conventional center feed unit Get price



recycled overflow clarity for internal process requirements reduction in loss of product to the overflow Hydroseparation in the upward direction to classify and remove a desired particle size fraction or solids of a different property by controlling the overflow rate Hydroseparators are not discussed in this section Get price


Beginners Guide to Thickeners

Beginners Guide to Thickeners Beginners Guide to Thickeners Thickening is a process where a slurry or solid-liquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water (or liquor in leaching processes) Get price


the polymer in thickener overflow floatation

The Polymer In Thickener Over Flow Floatation The overflow from this thickener reports to the tailings thickener Reverse Flotation Polymer Thickening Agent Wholesale Various High Quality Polymer Thickening Agent Products from Global Polymer Thickening Agent Suppliers and Polymer agents thickening manufacturer detergent fine polymer Get price


Floatation cells used in sludge thickening

This section is about floatation cells used in sludge thickening 3 good reasons to create an account from 3 to 12 kg DS m –2 h –1 depending on sludge quality and concentration (sludge index) and whether or not a polymer flocculating agent is thickener) in standard units up to 20 m in diameter with peripherally driven Get price

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