Thickeners can be widely used in the treatment of sludge, wastewater, and waste residues in metallurgy, mining, coal, chemical, building materials, environmental protection, and other industries. The thickener is important equipment for dehydration, drug removal, and washing in the process of beneficiation and chlorination in gold mines.
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The simplest use of a thickener in a metal-mining operation is to get water out of a pulp; for example, in a desert country where water is too valuable to be thrown …
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We helped AngloGold Ashanti improve their thickener process performance at their Sunrise Dam gold mine, by applying computational fluid dynamics (CFD) and recommending a number of simple design modifications.
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Pressure Oxidation (POX) is a process used to extract gold, copper, zinc, molybdenum, and uranium from refractory ore bodies.
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The required depth of the thickener may be ascertained by computing the capacity of the thickening zone to contain a supply of solids equal to the total capacity of the tank for the number of hours required to …
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process of continuous sedimentation. It is employed mainly in 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
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Concentrate Thickener Operation. In mining, when flotation is finished with the ore, and a final concentrate has been produced, often, both products will go to a concentrate thickener before it is dried for …
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The control of the thickener must accommodate fluctuations in the process stream. This control is achieved by manipulating both the flocculant addition and the rate of underflow pumping. However …
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Some leaching does continue, although at a very reduced rate due to the reduction of oxygen, in the thickener. The thickener underflow is removed at a density of 60% solids to minimize the transfer of high gold and silver content solutions to …
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The Thickener optimizer overcomes the challenges of conventional single-loop controllers, and combines a multivariable, model-based controller with in-depth process knowledge to stabilize and optimize thickener performance. Sustained higher underflow density; Improved overall thickener performance; Stabilized thickening process with variable feed
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Thickening of mineral processing products is the process in which the solid and liquid in the pulp are relatively separated, so as to obtain the thick pulp with high solid mass fraction.
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Many opportunities exist throughout the world for small cyanide plants, possibly using a Gold Leaching Process, both for production and pilot operations, especially in areas not easily accessible, and where labor and local costs are on a level for profitable operation. Ores not fully amenable to treatment by amalgamation or flotation …
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PDF | The common thickener underpins the performance of most hydrometallurgical facilities. Thickeners are simple, reliable, effective and... | Find, read and cite all the research you need on ...
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Thickeners, equipped with the patented spiral scrapers and angle rakes are a distinct improvement over all types of mechanical raking devices now in use. Specifications and thickener rake design All …
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In mining, when flotation is finished with the ore, and a final concentrate has been produced, often, both products will go to a concentrate thickener before it is dried for shipping. This is a very …
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Knowing how to size a thickener and determine the capacity required to handle a pre-determined tonnage of a certain pulp, by overflowing a clear solution and obtaining the desired pulp density of thickener discharge, depends upon the settling rate of that particular pulp.
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The required depth of the thickener may be ascertained by computing the capacity of the thickening zone to contain a supply of solids equal to the total capacity of the tank for the number of hours required to thicken the pulp to the density required in the discharge, and to this depth adding an allowance for the lost space due to the pitch of ...
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High rate thickeners are designed specifically to maximise the flocculation efficiency of flocculants. They differ from conventional thickeners in feed well design, size and control. Unlike conventional thickeners, high rate thickeners must use flocculants. The basic design of a high rate thickener is below.
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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 …
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Abstract: The thickening process is the primary method of producing high solids slurries for the minerals industry. Thickener outputs can accommodate a range of tailings disposal options from low yield stress, easily pumped suspensions for disposal in conventional 'wet' tailings dams to more concentrated slurries for delivery to 'dry disposal' and backfill …
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Upgrading thickeners not only boosts a mine's bottom line but also realises important sustainability benefits, FL explains.
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Mining thickener is mainly used for dewatering the wet concentrate during the ore dressing process. Our thickener is mostly located between cleaning beneficiation process and filtration equipment. Thickener is applied to both the concentrate and tailings to recover water. ... Following thickener is installed for a gold mining in China.
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Mining thickeners are crucial components in mineral processing operations, playing a vital role in enhancing process efficiency and managing tailings effectively. This comprehensive guide explores the key aspects of mining thickeners, including their functions, types, design considerations, operation, and maintenance.
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From a process perspective alone, high-density and deep cone thickeners have a clear advantage over high-rate thickeners. Because of the wide variance in metal values between processes (e.g. copper leach versus gold/silver), we did not attempt financial assessment of recoveries with different thickener options.
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Gold Leaching Process Circuit NO. CY-2. This next gold leaching circuit is practically the same as Flowsheet No. CY-1, only in place of the last two secondary thickeners a rotary filter is used. On some ores two or more thickeners are used between the agitators and the filter.
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Most of the world's minerals pass through solid-liquid separation in a thickener at some point in their processing. Thickeners are used to either: concentrate mineral slurries prior to extraction of …
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McLanahan Completes 10M Elevated Thickener for Australian Gold Processing Plant. ... For this Thickener, that process included minimizing the number of different fastener sizes and increasing assembly speed by minimizing tooling and guesswork on site. Additionally, McLanahan designed in the following aspects: ...
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Working of a Thickener. Let us understand in detail about how thickeners work. To start with, it works on the principle of Gravity sedimentation and the most common construction of a thickener ...
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This chapter discusses the liquid–solid separation equipment and processes most often used in gold processing. Included are preleach thickening, countercurrent …
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The position and movement of the rake drive can be adjusted to optimise the thickening process. The rake drive's speed and angle can be controlled to achieve the desired level of solid-liquid separation, which is crucial in gold mining, where the concentration of valuable minerals in the slurry needs to be maximised.
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Flotation Concentrate Thickeners. Of the various thickeners on the market those made by the Dorr-Oliver Company are the most widely used. They are of two types—viz., the Central Drive and the Traction Thickener—the second one being a more recent development which is superseding the other machine for some purposes.
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The thickening process is the primary method of producing high solids slurries for the minerals industry. Thickener outputs can accommodate a range of tailings disposal options from low yield ...
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Australia and around the world by improving the site process control strategies. This paper describes the improvements in CCD/thickening ... Thickener Cube on the tailings thickener at Gold Fields, St Ives, will be discussed next. GOLD FIELDS, ST IVES – TAILLINGS THICKENER CONTROL
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PHOENIX Thickeners use sedimentation technology to maximize the water recovery rate, providing clarified overflow water that can be recycled and reused in the process. HiFlo™ High Rate Thickeners / Clarifiers …
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The process of grinding and classification involves the use of large quantities of water. In the gold industry for instance, the rule of thumb is a tonne of water for a tonne of ore. ... Thickener Design-Batch Process. Thickeners have been designed using the basic laws of sedimentation. Empirical methods devised by manufacturers are also used ...
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