The pre-leach thickener, which was not exposed to corrosive conditions, is constructed from carbon steel. "We also designed and supplied five impurities removal thickeners, which are high rate thickeners, also in LDX2101 stainless steel," Areington says. "The sizes of these units ranged from 20 to 30 m in diameter."
Many thickener installations operate with water recovery below design limits largely through conservative control and low prioritization of thickener optimization. The operation of the thickener must accommodate fluctuations – control for disturbances – in the process feed stream to deliver a clear overflow and thickened underflow.
They must provide operating flexibility to meet process needs. Such factors multiply the decisions which must be made prior to the selection of a thickener. Most thickener designs, suitable to minerals applications, are based on the separation of -65 mesh, 2.7 specific gravity solids containing slimes.
Pumping thickener underflow in the mining industry. Our pumps are designed to handle high-solids content fluids, such as concentrated ore paste with a solids content of 40-80%. Skip Navigation. ... The primary purpose of thickener is to increase solids concentration of the underflow feed stream in mineral recovery.
Mining thickeners play a critical role in the mineral processing industry by facilitating the separation and concentration of solids from liquids. Understanding the components and working principles of these thickeners is …
Calculating Thickener Area: Thickener area required is then calculated by applying above determined data in the following formula: A = 1.333 (F – D)/R. A = Thickener area in square feet per ton of dry solids thickened in 24 hours. F = Initial density (Parts Water to …
We can supply a variety of high density, high compression, and paste thickener sizes, from 1-metre pilot-scale units to 90-metre diameter, including standard designs and custom options based on feed conditions.
the thickener in a pipe or open launder and enters the feed well, which is designed to minimise turbulence resulting from the feed entry velocity and to force the entering slurry below the clear-liquid surface. The thickened solids flow and are raked to the center of the thickener and removed.
Find out key considerations in thickener modernizations. Reactorwell, Vane Feedwell, bridge and rake mechanisms, drive and power units ... Thickeners are designed at a point in time for a specific requirement. And while a thickener can be operated within a range around the design parameters, over its life (often in excess of 20 years) it will ...
According to CRC Care 2013, mining activities are producing more than 10 billion tonnes of tailings. Also, they use thickeners as a water recovery system, to meet requirements in the recovery and reprocessing of water. ... With a thickener, the solid-liquid separation is mainly done by sedimentation. A thickener has several layers, the upper ...
The objectives of thickener control are varied, but in most instances, the objective is to dewater the slurry, reclaim the clear overflow for reuse in the process, and produce a thickened or more dense underflow, which can either …
Figure 1 - Characteristics of different thickener types (Frank Baczek, 2004) Most of the thickeners installed in the mining industry for years, particularly since 1990, has been designed to operate with the use of polymeric flocculants that …
The dry mine feeds clay residue (slimes) to an Outotec High Compression Thickener. The 20m diameter thickener incorporates a feed dilution system using both forced dilution and self-dilution. The thickener was designed to a duty of 80 t/hr and a feedwell volume flow of 1500 m 3 /hr, based on 3% w/w feedwell solids.
In order to achieve the highest performance in a thickener, there are many critical key performance indicators and variables – all of which need to be measured accurately and reliably. The thickening process can be monitored and modified by measuring and controlling these key variables, including bed mass inventory, bed level, underflow ...
The thickener project entailed the fabrication of several precisely engineered, carbon steel, very large diameter thickeners designed for exact alignment in accordance with the highest quality and design codes. Betterect MD Nicolette Skjoldhammer speaks to Engineering News about this project. Betterect MD Nicolette Skjoldhammer: Natasha Odendaal:
Paddle Dryer: The Ideal Solution for Sludge Drying. Our paddle dryers are engineered to provide an efficient and cost-effective solution for sludge drying in wastewater treatment plants. Here's why our paddle dryer system stands out:. 1. Energy Efficiency: Our paddle dryers are designed to use minimal energy while achieving maximum drying efficiency. …
Southern African Institute of Mining and Metallurgy 489 Tailings Thickener Improvements at Sentinel Copper Mine Mick Bower1* and Mikko Kynkaanniemi2 1Kemira Chemicals, Bradford United Kingdom 2Minera Panama s.a., Panama City, Panama *Corresponding author: mick.bower@kemira
One such crucial piece of equipment is the mining thickener, which plays a significant role in solid-liquid separation, water recovery, and overall efficiency. Let's delve into …
This thickener is designed to be easy to mix and dissolve, making it an ideal option for those who want to save time without sacing quality, however, it may take awhile to get it mixed in all the way. ... Each one has its own unique benefits and features, making it important to weigh the options and choose the best fit for individual needs
Every mine site has unique considerations, whether it be high fresh water costs, permitting, stability issues or the threat of seismic activity. We work with you to determine the tailings solution that's right for your unique mining conditions and local regulations. We offer complete dewatering, material handling and co-mingling
Mining is an essential industry that plays a critical role in the global economy. The process of mining involves extracting valuable minerals and metals from the earth's crust, and this requires various machines and equipment. One such piece of equipment is the mining thickener, which is used to separate solids from liquids in the mining […]
Thickeners in mineral processing can be monitored and improved by measuring density in the feed of the system, in the feedwell and in the underflow. Combined with a flow meter, the …
The dense Thickener solids are raked to the thickener's underflow cone and are removed via a slurry pump through the underflow pipe. Underflow slurry densities can vary based on the type of material being processed, size …
The existing outdated thickener setup had numerous features leading to undesirable thickener feed characteristics at the feedwell. The feed slurry entered the thickener with high-velocity launder flow, carrying substantial volumes of froth and entrapped air. This resulted in surging, burping, splashing, and a challenging
This is a very important step so here we discuss Basic Concentrate Thickener Operation. For the mine to get its concentrate to the smelter it will have to be transported, by truck, train or ship. To illustrate the importance of this circuit, let us suppose that the concentrate, that is being shipped, has one percent more moisture in it than it ...
ANDRITZ GeoSET is our standard thickener range, with an advanced modular design that is robust for life and provides maximum efficiency. The ANDRITZ GeoSET thickener can be supplied with a Metris addIQ control system. ANDRITZ LiKOSET THICKENER ANDRITZ LiKOSET is an industry-specific designed thickening solution targeting the ever-growing lithium
The Ok Tedi mine, operated by Ok Tedi Mining Limited (OTML), is a major producer of copper concentrate for the world's smelting market, yielding some 600,000 tonnes of high-grade copper concentrate a year and 500,000oz of gold. The mine is located on Mount Fubilan, Western Province of PNG, with an altitude of approx 1500m.
This is designed this way to give the bed a slope towards the centre of the thickener. As the rakes are turned by the drive shaft they cause the concentrate that has settled onto the bottom of the thickener to be pulled into the discharge chamber at the centre of the thickener. This is called the CONE.
3. High-Efficiency Thickener. In addition to the inclined plate installed in the thickener, the high-efficiency thickener has a special flocculant adding mechanism. The diameter of the thickener can be reduced to 1 / 3-1 / 2 of that of the common thickener, and the floor area is only 1 / 9-1 / 4 of that of the common thickener.
performance of industrial thickener using computational fluid dynamics (CFD) and then designed a new thickener feedwell. Using pilot- scale test, TAO et al [14] investigated the effects of key operating parameters on waste clay thickening performance and the influence of feed rate, sand addition rate, bed depth and flocculant dosage were
design calculations to determine the required thickener area, the most important design parameter, and ultimately the maximum steady state underflow concentration that is possible for a given solids throughput. In addition, the capital cost ofa thickener will be dependent on the calculated required settling area. Therefore,
Customers have reduced water to tailings by up to 46% by upgrading their thickener. An Australian gold mine reduced water consumption by upgrading their thickener with E-DUC ® autodilution and E-Volute ™ feedwell systems. The E-Volute feedwell optimizes flocculation and aggregate growth, while the E-DUC feed dilution system minimizes flocculant use and …
The new 2nd Generation Paste Thickener builds on this proven performance with a range of innovative new features. For example, vertical load monitoring with the Smart Rake Lift system means the Outotec Paste Thickener is one of the only systems in the world that can detect early formation of rotating beds, enabling counteractions to be taken early.
22′ to 50′ Diameter Thickener Thickener Designed with Beam + Steel Tank. Thickener Designed with Beam + Wood Tank. 50′ to 80′ Diameter Thickener Thickener Designed with Truss + Steel or Wood Tank. Thickener Designed with Truss + Concrete Tank. Thickener Types. Thickener options have grown in the last 10—15 years for two main reasons: