Feeding a Thickener for Good Settling and Underflow ...

Feeding a Thickener for Good Settling and Underflow Density & Overflow Clarity View Larger Image How much you feed a thickener and how/where you feed it will determine how well slurry or concentrate settles it it as well as the level of ease or difficulty you will have at obtaining a good underflow density and overflow clarity.

Beginners Guide to Thickeners - Outotec

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).

Thickener Operation - Zeroday Enterprises

Coagulants are sometimes also used when fine particle recovery is a challenge with flocculants alone. Fine particle recovery is needed to maximize thickener overflow clarity, minimize sands-slime separation in the bed which causes torque issues and to ensure bed solids flowability.

Instrumentation and Control of Sedimentation Equipment

Thickeners are used for increasing the solids content of a slurry. The general objectives are clean overflow and maximum solids concentration in the underflow. Flocculants are typically used to agglomerate the solids to increase the settling rate and improve the overflow clarity.

Clarity probe, Suspended Solids Measurement, Turbidity ...

Tailings thickener overflow turbidity. Precipitation tank overflow suspended solids. Seed thickener overflow suspended solids; New: Clarifier overflow turbidity sensor rated to 120 deg C. Optical Fibre technology ranged 0 to 500 mgpl. Perfect for alumina clarifier overflow solids.

optimizing pre leach thickeners - Thickening, Filtering ...

The clarity has improved over the 2 weeks w Hello there, am interning at a gold mine where there are problems with the clarity of the overflow of the pre-leach thickeners. Initially, only …

Optimising thickener efficiency - sustainabilitymatters.net.au

Accurate volumetric measurement of the thickener’s inflow is vital to ensure the clarity of the recovered process water. Essentially, the infeed flow rate can be controlled based on high clarity of the overflow. So the clearer the outflow, the faster the inflow feed rate, which leads to optimised thickener throughput.

thickener gold ore recovery overall service - aelabworld.co.za

May 12, 2018 · clarity of overflow thickener newstonight. Beginners Guide to Thickeners Many thickener installations operate with water recovery below design limits largely through conservative control and feed density, underflow density, overflow clarity Feedwell is the heart of a thickener Authors Johnson, J; feedwell has been installed in all types of ...

Thickener optimization to reduce production costs ...

In the thickener process there are many critical key performance indicators that show how the process is running – all of which need to be measured accurately and reliably. Hydraulic pressure, bed height and bed mass are some of the critical measuring points, as well as underflow density, underflow rate, overflow clarity and dry solids feed rate.

A METHOD FROM PREVENTING FROTH FROM A FLOTATION …

A METHOD FOR PREVENTING FROTH FROM A FLOTATION PROCESS TO CONTAMINATE THE OVERFLOW CLARITY OF A THICKENER. TOP OF TANK. Froth forming above. liquid level. Extended tank . above overflow ... A NOVEL WAY TO PREVENT FROTH FROM ENTERING THICKENER OVERFLOW.

Thickener Operation - Zeroday Enterprises

Coagulants are sometimes also used when fine particle recovery is a challenge with flocculants alone. Fine particle recovery is needed to maximize thickener overflow clarity, minimize sands-slime separation in the bed which causes torque issues and to ensure bed solids flowability.

Optimising thickener efficiency - sustainabilitymatters.net.au

Volumetric measurement of the thickener’s inflow. Accurate volumetric measurement of the thickener’s inflow is vital to ensure the clarity of the recovered process water. Essentially, the infeed flow rate can be controlled based on high clarity of the overflow.

A METHOD FROM PREVENTING FROTH FROM A FLOTATION …

A METHOD FOR PREVENTING FROTH FROM A FLOTATION PROCESS TO CONTAMINATE THE OVERFLOW CLARITY OF A THICKENER. TOP OF TANK. Froth forming above. liquid level. Extended tank . above overflow ... A NOVEL WAY TO PREVENT FROTH FROM ENTERING THICKENER OVERFLOW.

the polymer in thickener overflow floatation

clarity of overflow thickener - sament clarity of the thickener overflow. Thickener Optimization in your mining process Endress+Hauser ... the polymer in thickener over flow floatation.

Performance optimization of paste thickening

to detect the clarity of thickener overflow. As such, it does not directly tell the solids content, but it can be used as a “watch-dog” to avoid the escape of solids to the overflow. 2.4 Rake torque High levels of rake torque are required in modern thickeners due to design and operational improvements

Thickening - CEC Mining Systems

Maximum underflow density and overflow clarity with bolted construction options to expedite project delivery schedules. Thickeners are used in continuous process applications where solid-liquid separation occurs by sedimentation.

Optimise your thickener efficiency for maximum ...

Accurate volumetric measurement of the thickener’s inflow is vital to ensure the clarity of the recovered process water. Essentially the infeed flow rate can be controlled based on high clarity of the overflow. So the clearer the outflow, the faster the inflow feed rate which leads to optimised thickener throughput.

Feedwell is the heart of a thickener - Conference Papers

the direction of this lost flow. Poor overflow clarity plague thickeners with this issue. Figure 1 Un-collected fines short circuiting to the overflow The premature release of the feed stream from the feedwell was also shown to be able to carry the heavier solids of floccules to one side of the thickener …

Thickener Control using Turbidity measurement.

I work in mining application where the important factor is sludge density instead of overflow clarity, and we typically use ultrasonic bed level measurement, and underflow density nuclear gauges. But on a recent project the plant installed a settling time measurement device.

Thickeners - Solid Liquid Separation

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.

SmartDiver - Mud Diver, Sludge Level Measurement, Sludge ...

The Smart Diver is a ruggedised mud diver that provides measurement of mud levels, settling zones and overflow clarity in thickeners, clarifiers, washers and decanters. Tank profiling (suspended solids vs depth) is also provided, as it is specific gravity profiling and bed level measurement. For more information call +61 3 9786 1711.

Thickeners: How they Operate - Mainland Machinery

Thickeners: How they Operate. The most common solids-liquid (S/L) unit operation is thickening. A wide variety of thickeners are used including conventional, deep well, paste, high rate and clarifiers which is a thickener subclass used for removing solids from turbid or very low % solids waters.

clarity of overflow thickener - newstonight.co.za

Beginners Guide to Thickeners Many thickener installations operate with water recovery below design limits largely through conservative control and feed density, underflow density, overflow clarity Feedwell is the heart of a thickener Authors: Johnson, J; feedwell has been installed in all types of ...

Optimise your thickener efficiency for maximum ...

Essentially the infeed flow rate can be controlled based on high clarity of the overflow. So the clearer the outflow, the faster the inflow feed rate which leads to optimised thickener throughput. Combined with the mass flow measurement of the flocculent, precise ratio control of the flocculant dosing is achieved.

Thickeners: How they Operate - Mainland Machinery

Thickeners: How they Operate The most common solids-liquid (S/L) unit operation is thickening. A wide variety of thickeners are used including conventional, deep well, paste, high rate and clarifiers which is a thickener subclass used for removing solids from turbid or very low % solids waters.

Clarity Wedge - Clarometer

Clarity Wedge Magnetic Wand Sample Scoop Scale Probe ISO 10086 specifies a method for the comparative evaluation of the performance of flocculants for clarification, thickening and sedimentation on a given slurry.

2 ea QPEC 8’ x 10’ Thickener Tanks skid mounted 2 ea QPEC ...

Tank : Mild steel with overflow launder and undertow cone, both with flanged discharges and support legs to position discharge cone off the floor. Available with cover and liquid cover seal as required. Cone bottom tanks optional. Paint Standard with rustoleum primer and green enamel finish coat.

Effect of Initial Pulp Concentration on Particles Settling ...

concentrations, the clarity of the liquid in the overflow was studied. For the coal sample, the settling tests were started by changing the initial concentration from 2 to 10% with 2% distance and from 15 to 30% with 5% distance.

Thickener optimization to reduce production costs ...

In the thickener process there are many critical key performance indicators that show how the process is running – all of which need to be measured accurately and reliably. Hydraulic pressure, bed height and bed mass are some of the critical measuring points, as well as underflow density, underflow rate, overflow clarity and dry solids feed rate.

Thickening and clarifying - flsmidth

Poor solid-liquid separation functions can threaten the overall performance of your processing plant. With our efficient feed dilution and flocculation technology, we provide superior thickening performance in the form of better overflow clarity and higher underflow densities, while …

Improving thickener performance — FLSmidth Discover Mining

Operation of slurry thickeners is generally a compromise between clean overflow water and underflow density. Either the 22 m tailings thickener will achieve a high underflow density, which enables maximum water and cyanide recovery, or it operates to improve overflow water clarity and enables a positive impact on gravity gold recovery.

TSRU TAILINGS PILOT SCALE THICKENING AND DEPOSITION …

overflow solution to the thickener feed line, before the polymer injection locations, to achieve the target solids concentration as introduced to the thickener feed well. The remaining portion of thickener overflow was pumped to a nearby shallow swale that drained by gravity to the main tailings area.

Inclined plate settler - Metso

The Inclined Plate Settler (IPS) consists of two main components, the upper tank containing the lamella plates inclined at 55° and the lower conical or cylindrical sludge tank. The feed for the IPS enters through vertical chambers on either side of the plate packs and passes into …

Current Trends in Countercurrent Decantation and Thickener ...

interface settling band and the overflow clarity that are obtained from an online analyser called a Smart Diver. A Smart Diver is capable of providing a very robust measure of the entire density profile within a CCD or thickener. Sites that want to take the next step and operate their CCD or thickening circuit to achieve optimal performance ...

Deep Bed™ Paste Thickeners - WesTech Engineering, Inc.

Over the years, this thickening technology has evolved to produce a non-settling solids suspension with underflow concentrations much higher than what is produced with conventional or high rate thickeners. WesTech’s Deep Bed™ Paste Thickener is the latest advancement in the evolution of this style of thickener.