Beginners guide to thickeners
In high rate thickener (HRT) designs the rise rate or solids loading will dictate the required tank diameter for any given throughput. In high compression (HCT) and paste (PT) applications the bed depth or the mass of solids in the thickener must also be selected to ensure the desired underflow density from the thickener is achieved.
Dewatering to higher densities
Introduction. Maximising thickener underflow density has advantages in many of the traditional thickener applications. There is a long history of innovations in thickener design to enable the production of higher densities. Large High Density thickeners were pioneered in the late 1980s. The roots of Deep Cone thickeners go back to the 1960s.
Thickeners and Clarifiers
HRT-S 3m - 10m Diameter Key features Delivers consistent and high-density underflow Uses flocculation chemistry to increase settling rates Maximizing life cycle profitability …
Mine Water Management and Recycling: The Importance of Thickener
A cylindrical tank houses the continuous thickener. Pulp is supplied into the tank's midsection via a feed-well located up to 1 m underneath the suspension's exterior. ... Various manufacturers created machines described as "high capacity" or "high rate" thickeners in the 1980s. These machines differ from traditional installations in that they ...
Clarifiers for Water Treatment | Veolia
For years of reliable service, Veolia's gravity oil/water separators are made with corrosion-resistant material and are prefabricated packaged units, reducing installation cost…. Our clarifier water treatments effectively clarify, soften, thicken, and remove metal. Browse our clarifier systems and learn more about Veolia's water treatments.
Municipal Sludge Thickening Technologies | SpringerLink
According to the WEF ( 2007) gravity thickener tank dimensions usually range from 10 to 24 m in diameter, side-water depths vary from 3 to 4 m and floor slopes vary from 1:4 to 1:6. Side water depth and floor slope depend upon the period of time required to thicken the sludge to the concentration and storage volume required in order …
How a Thickener Works
How a Thickener Works. Thickening or dewatering may be defined as the removal of a portion of the liquid from a pulp or slime made up of a mixture of finely divided solids and liquids. The early methods of thickening employed plain, flat-bottomed tanks into which the pulp was fed until the tank was full. The solids were then allowed to settle ...
Thickening
Unlike conventional thickeners, high rate thickeners must use flocculants. The basic design of a high rate thickener is below. High rate thickener feed wells are designed to disperse flocculants thoroughly into the feed end to admit the flocculated slurry into the settling zone of the thickener without destruction of the newly formed floccules.
High-Rate Thickeners – MechProTech
Hi-Rate Thickeners. The HI-RATE THICKENER is a MechProTech OEM product manufactured in-house. It has a structurally grated walkway across the top. Suspended from the walkway at the top of the tank is the drive assembly consisting of a gearbox driven by an electric motor and the hydraulic lifting system.
Tailings thickener retrofit, OK Tedi
The retrofit and upgrade was to improve the settling rates of solids in the thickener. The thickener performance is far superior after the upgrade. The pyrite plant is made up of two streams, namely Module 1 and 2. Tailings from each module are pumped to thickeners 2 and 3 respectively. Testwork
WesTech 12 M AltaFlo Ultra High-Rate Thickener
Product Description. The AltaFlo™ ultra high-rate thickener is a rake-less thickener that provides mixing, flocculation and internal dilution followed by clarification and positive sludge collection and removal in a single tank. The principles of flocculation have been further adapted to a new design that will thicken slurries at an even ...
Thickener
The thickener was applied at various concentrations (0, 4, 8, or 12 g/l) in the pretreatment bath to determine the effect of cationization on the optimal level of thickener. The concentrations of soda ash and urea in the pre-treatment were 40 and 100 g/l respectively.The fabrics, untreated cotton and cotton cationized with 100 g/l reactant, …
Thickeners for slurry dewatering plants » Diemme Filtration
Diemme ® Filtration high-rate sludge thickeners are the result of many years of experience in solid-liquid separation in a wide range of industries such as mining, chemical, metallurgical, water treatment and many others. Our commitment to Research & Development has allowed us to propose innovative solutions to optimise performance …
High-rate Thickener | FL
Key Benefits Maximum capacity Improved control Increased underflow density Lower flocculant dose Better slimes management Stay updated on your industry Improve your …
Application of the FL Deep Cone Technology to the Fertilizer
These improve water recovery and minimize tailings impoundment requirements. High density thickeners can typically achieve 5 â€" 10 wt% higher underflow densities compared with a high rate thickener, achieving densities that can still be moved with centrifugal pumps and pumped to the tailings impoundment without positive …
HiFlo™ High-Rate Thickeners | PHOENIX Process …
PHOENIX HiFlo™ High Rate Thickeners clarify wash plant effluent water while thickening the slurry to 40-45% solids, greatly reducing the underflow slurry rate to the slurry pond. PHOENIX Thickeners use sedimentation …
High rate thickener HR-THK
Thickeners are utilized in various solid/liquid separation processes in order to increase the density of a process stream. Feed solids concentration is the single most important variable affecting the sedimentation properties of given slurry. High-rate thickener. ANDRITZ process engineering will determine the optimum percentage of feed solids ...
The Development of Paste Thickening and Its Application to
A number of new copper plants are utilizing high density tailings thickeners. These improve water recovery and minimize tailings impoundment requirements. High density thickeners can typically achieve 5–10 wt% higher underflow solids compared to a high rate thickener, achieving densities that can still be moved with centrifugal pumps.
Thickeners and clarifiers Complete range of reliable and
Thickener tanks Tank options include in-ground, on-ground, anchor channel or elevated steel. Steel tanks are available as welded or bolted designs. High-rate thickeners In developing our high-rate thickeners, we draw upon decades of experience in flocculation, feed dilution, and sedimentation technology from EIMCO® and Dorr-Oliver®.
HIGH RATE THICKENERS
High Rate Thickener is a product of McNally Sayaji Engineering Limited, a leading engineering company in India. It is designed to improve the efficiency and performance of solid-liquid separation processes in various industries, such as mineral processing, coal, and sand. Learn more about the features, benefits, and applications of this innovative product …
Thickeners and Clarifiers
High compression thickeners Achieve a higher density underflow with our High Compression Thickener. The HCT has been designed to suit customer needs with a deeper solids bed and higher rake torque than our High Rate Thickener or conventional thickeners. Consistent and high-density underflow Maintains a constant solids inventory …
EKCP
HRB is a high rate bridge mounted Reactor Clarifier supplied in sizes ranging from 3m to 25m diameters. The high rate Solids-Contact Reactor Clarifier operates with the raw influent liquid being brought into immediate contact with a large circulating volume of relatively dense previously formed flocculate and precipitate.
Maximize Precious Metals Recovery with CCD Circuits and High …
Increasing wash water to 3.5 tons of water per ton of solids, or a wash ratio of 1:1.1, raises recovery to about 95% (Table 2). Adding one stage (a four-thickener circuit) and keeping wash at 2.5 tons of water per ton of solids, provides a recovery of 96.2% (Table 3). Table 2 – Assumptions for 3-Stage High-Rate and More Wash.
Thickening, Filtration and Clarification in the
2. Clarifier – Thickener Selection. Proper thickener and clarifier selection depends on process goals, feed slurry composition, and life cycle costs. In phosphoric acid, thickeners concentrate ...
High Rate Thickeners
The High-Rate thickeners became popular in the mid 1980's and are relatively newcomers to the sedimentation line of equipment. As already discussed previously are a major component in a plant layout and occupy large spaces which may be saved by introducing high-rate machines. Furthermore, they are normally positioned far away from the center …
Thickeners — Types, Working Principle & Applications
In the 1980's, machines known as "high capacity" or "high rate" thickeners were introduced by various manufacturers. These machines are characterized by a reduction in unit area ...
Case Study: Thickening Solutions Taiyuan Iron & Steel Group
One stage thickening. After installation, the new 53m Outotec high rate thickener receives flow from tailings stream plus all flow from the plant expansion.Tailings streams No.2-5 from the old system still go into two shallow tank wall thickeners. The 53m Outotec thickener was required to produce a nominal capacity of …
AltaFlo High Rate Thickeners
AltaFlo High-Rate Thickener Overview. The AltaFlo™ ultra high-rate thickener is a rake-less thickener that provides mixing, flocculation and internal dilution followed by clarification and positive sludge collection …
Dewatering: Thickening, Filtering, CCD, Water Treatment
Started by OratileM. We have a problem with the Tailings thickener.It does not settle solids and the overflow has no clarity. The feed rate is 90m^3/h at the density of 1.12.The flocculant has been changed more than 3 times. It is dosed at full speed but there's no chang... Last replied to by SmartDog.
Thickeners
Roytec has emerged as one of Southern Africa's leading Thickener suppliers. Our advances in feedwell optimisation (RadFlow), Drive Head design and Bolted Tank experience has resulted in many significant thickener installations over the past 12 months. CCD Circuit of 5 x 35m stainless steel units for the DRC. Phosphate Concentrate 30m …