Replacing Filters with Paste Thickeners | Case Study

A 15 m diameter WesTech Deep Bed™ paste thickener was installed above the disposal site (about one half mile from the plant) at an elevation to be above the highest potential raisings of the dam. The existing two high-rate thickeners received the process refuse stream and thickened to about 30 wt% solids, which was then pumped to the paste ...

PASTE THICKENING IRON ORE TAILINGS UPDATE

scale testing of a paste thickener for iron ore tailings were described. Based on the tests an 18 m diameter WesTech Deep Bed™ paste thickener was designed, installed and started up in 2008. Full-scale design of the thickener, application and initial start up results are discussed in …

Flocculation, dewatering and sedimentation behaviour of …

Typical tailing backfill scheme using thickener (a) and internal structure of the WesTech HiFlo™ thickener (b), Deep Bed™ paste thickener (c) [16], [17], [18]. By further comparing thickeners in Figs. 1 b and 1 c, there are obvious structural differences, which mainly includes gentle floor angles (HiFlo tailing thickener)/steep floor ...

Design of a WesTech HiDensity Paste Thickener for …

WesTech DeepBedTM paste thickeners (sometimes referred to generically as deep cone type thickeners) are characterised by a height to diameter ratio between one and two, a bottom cone angle of 15-45o, and a bridge mounted drive. Diameters are limited to about 24 m for this type of paste thickener. The mud bed height is

Espessadores de Pasta

A equipe WesTech pode ser consultada no decorrer de todas as fases de um projeto; desde a viabilidade, detalhamento, fornecimento, startup, até a otimização e auditorias de sistemas. Incorpore a experiência da WesTech em processos minerais e sistema de pasta na sua equipe de projeto. Wash Feed Paste Thickener Paste Thickener Paste Thickener ...

Deep Bed Thickener in High Rainfall Area

WesTech Deep Bed Paste Thickener was installed. A dam raise was needed at the end of year one after the surface stack was begun. Over five years of operation, the dam elevation increased over 20 meters. Comparing photos 8 and 9, the white control room building can be used as an elevation reference. At this point, the

Conventional Gravity Thickener

Conventional Gravity Thickener Overview. WesTech's complete line of high rate, heavy duty thickeners offers the most advanced designs for use in the industry. WesTech equipment is engineered and manufactured to the highest standard in quality. It offers the precision and durability required to keep your process going.

Paste Thickeners

percentage points higher than underflow from a high-rate thickener. The WesTech Deep BedTM paste thickener is the latest advancement in the evolution of this style of thickener. To be able to consistently dewater the tailings slurry to a non-settling and non-segregating suspension, WesTech Deep BedTM paste thickener design includes:

Efficient Liquid-Solids Separation Is Critical to …

WesTech Deep Bed paste thickener at phosphoric acid plant. Clarification. Clarifiers remove fine gypsum from the phosphoric acid product to ensure a pure liquid for later production steps. The primary goal of the clarifier is to evenly …

an industry review

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Feedwell is the heart of a thickener

plant in south-eastern China, their water treatment plant precipitate is dewatered in a WesTech Deep BedTM paste thickener equipped with an EvenfloTM two stage feedwell. The mixing zone in the feedwell and the clarified water are seen in the Figure 6. …

Belt thickener

The WesTech Deep Bed Paste Thickener can thicken a tailings stream to non-settling paste at solids concentrations approaching that of a filter cake. Design characteristics of the Deep Bed™ result in maximum water recovery, …

MudMax™ Bed-Level Monitoring System

Patented Bed-Level Instrument That Brings Thickener Control Within Reach. MudMax™ uses advanced technology to deliver a first-of-its-kind bed-level monitoring system that provides 360-degree bed-level measurement inside thickeners and clarifiers. Multiple sensors located in the active bed-level area directly detect and accurately measure bed ...

35M (115′) WESTECH PASTE THICKENER

The WesTech HiDensity™ paste thickener produces non-settling and non-segregating underflow with low yield stress. There are many installations where site-specific objectives are best served with a lower yield stress underflow.

Hydraulic Fracturing Wastewater Treatment Solutions

WesTech's Hydraulic Fracturing (fracking) wastewater treatment solutions employ a variety of possibilities depending on the need. ... In many states the frack water is injected into regulated deep wells – usually old drained gas or oil wells. The only water treatment usually necessary is filtration. ... Deep Bed™ Paste Thickener. Product ...

Paste Thickener Paste Thickener Paste Thickener Paste Thickener CCD • • • • • ,WesTech ...

Mineral Processing Wastewater Solutions

In underground mining, the WesTech Deep Bed™ paste thickener is an emerging option to the conventional solution of high-rate thickener/vacuum filter for paste backfill applications. There can be a number of factors that make paste thickening an attractive alternative. ... and copper. It is mined mostly in Canada, the former USSR, Australia ...

Thickener Optimization Package

The WesTech Deep Bed Paste thickener produces non-settling and non-segregating underflow with the maximum rheology (density) possible. WesTech is a leader in paste technology with diverse application experience and a large installation base. • Maximize water recovery

Thickeners and clarifiers – water recovery – FLS

The deep tank design maximises pulp concentration, and produces uniform, non-segregating underflow slurry with a paste consistency. Spiral Rake Blade for thickeners: the optimal design E-® Ultra High-Rate Clarifiers and Thickeners

OCP Concentrate Pipeline Dewatering | Case Study

WesTech/Paste Thick Associates recommended and designed process control to insure a tight underflow density for the acid plant. The thickener underflow system has instrumentation and methods of monitoring and trimming the density to a narrow range. WesTech 20 m Deep Bed paste thickener and 10 m surge tanks feeding the acid plant.

Paste Thickeners | McLanahan

A compromise option of using a rakeless (ULT) design can be considered. In this case, the cost and complexity of a mechanical drive is traded off for a deep mud bed and steeper 60 degree floor slope picture. The ULT design will not achieve the same underflow density as the paste thickener with rake and pickets, but it can be more economical.

Deep Bed Thickener in High Rainfall Area | Case Study

The slurry pond was near capacity when the WesTech Deep Bed paste thickener was installed. A dam raise was needed at the end of year one after the surface stack was begun. Over five years of operation, the dam elevation increased over 20 meters. Comparing photos 8 and 9, the white control room building can be used as an elevation reference.

TOP? Thickener

HiDensity™ Paste Thickener WesTech's HiDensity thickener produces non-settling thickened tailings with lower viscosities and underflow concentrations than what is produced in the Deep Bed paste thickener. The HiDensity thickener offers the advantages of paste and thickened tailings for large tonnages.

Water and Wastewater Treatment Equipment and …

With a half century of engineering and process expertise, coupled with dedication to customers, we provide process solutions for a wide variety of water-treatment applications in municipal, …

HiFlo High Rate Paste Thickeners

Pilot or laboratory size equipment is available for testing or purchase. WesTech's design provides for deaeration of the thickener feed prior to flow into the feedwell. Proper level of the flocculation can be carefully controlled. Feedwell design enhances the separation and pulp bed interface sensors are utilized for optimum performance.

Thickening Bauxite Tailings | Case Study

Improving the Process. A bench and pilot-scale study program was conducted to evaluate paste thickening of bauxite tailings for a solids throughput rate of 360 t/h and a flow rate of 5,300 m 3 /h. The tailings particle size distribution was characterized as D40 minus 60 microns.

Belt thickener

HiDensity™ Paste Thickener Overview: WesTech's HiDensity™ Paste Thickener produces non-settling thickened tailings with lower viscosities and underflow concentrations than what is produced in the Deep Bed™ Paste Thickener. The HiDensity Thickener also has a lower height-to-diameter ratio, which allows for on-the-ground construction and ...

Westech Deep Bed™ Paste Thickener

The WesTech Deep Bed™ Paste Thickener can thicken a tailings stream to non-settling paste at solids concentrations approaching that of a filter cake. Design characteristics of the Deep Bed™ result in maximum water recovery, …

Precious Metals Gold & Silver Mining Industry Solutions

Thickened underflow slurry from the final CCD thickener is pumped to the tailings paste thickener. The wash solution will flow countercurrent to the solids flow, increasing in precious metal concentration as it proceeds to the first CCD thickener. The pregnant solution from the first CCD thickener is pumped to the buoyant media clarifier. Tailings

Design of a WesTech HiDensity Paste Thickener for …

A 45 m diameter WesTech HiDensityTM paste thickener was designed and built to produce thickened tailings from 362 tph of bauxite tails for surface stacking at the CVRD Paragominas …

OCP Concentrate Pipeline Dewatering

WesTech is supplying the Deep Bed™ paste thickeners required to produce the target feed density for four of the acid plants. WesTech is also supplying the pumps, instrumentation, and surge holding tanks. WesTech/Paste Thick™ recommended and designed process control to insure a tight underflow density for the acid plant.

Paste Thickening and Mine Backfill

In underground mining, the WesTech Deep Bed™ paste thickener is an emerging option to the conventional solution of high-rate thickener/vacuum filter for paste backfill applications. There can be a number of factors that make paste …

Replacing Filters with Paste Thickeners

paste thickener was significantly lower than the high usage of belt press filters. PasteThick™/WesTech recommended and provided a system layout to place the paste thickener near the impoundment site to reduce the cost of transporting the paste thickener underflow. A 15m-diameter WesTech Deep Bed™ paste thickener was installed above the

Replacing Filters with Paste Thickeners

Replacing Filters with Paste Thickeners Deep Bed™ Paste Thickeners CASE STUDY Feed Underflow Overflow Stream flow, gpm 1300 494 806 Stream Specific Gravity 1.13 1.34 1.0 Wt% solids 23% 51% Dry solids, stph 84.5 84.5 WesTech 15m diameter Deep Bed™ paste thickener located above the deposition site.

WesTech Engineering, Brazil Office

Serving customers in Brazil, Argentina, Bolivia, Colombia, Ecuador, Paraguay, Uruguay, and Venezuela. WesTech Brazil has provided solutions and equipment for liquid/solids separation since 2006, treating source waters and wastewater for a wide variety of applications across municipalities and industrial market sectors, including process water for the mining, chemical, …

Paste Thickeners

The WesTech Deep BedTM is designed to produce maximum water recovery, maximum underflow density (approaching a filter cake), and highest yields possible in a thickener.