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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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The thickener is a tailing or concentrates dewatering equipment commonly used in the mining industry, which is mainly used to separate the water to achieve the purpose of solid-liquid separation. ... and waste residues in metallurgy, chemical, coal, non-metallic mineral processing, environmental protection, and other industries.
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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 distribution of solids being settled, or other process factors but as a general rule, range from 35-50% solids by weight.
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How a Continuous Thickener Works As a feed stream enters the thickener, the solids settle to the bottom. Clarified liquor overflows to the top and settled solids undeflow is removed from the bottom. The following illustration shows a cross section, schematically illustrating the operation of a continuous thickener.
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Mineral processing in Australia and China - (papers selected from the second Australia-China Joint Symposium on Minerals and Metallurgy) Edited by Prof. Aibing Yu. 10 September 2015. Advances in comminution and classification of minerals - Best mineral processing papers from the European Symposium on Comminution and …
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The mineral settling characteristics will change continuously under the influence of mineral processing reagent and pH. The settlement characteristics directly affect the settlement velocity. The faster the solid settlement rate is, the shorter the residence time of slurry in the thickener is and the faster the growth rate of mud layer is.
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Increasing thickener profitability through integrated online monitoring Integrated online monitoring simplifies the convoluted process of monitoring data, which is central to precise process control in …
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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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Tailings, the by-products of mineral processing, often contain fine particles and water. Thickeners are extensively used to dewater and thicken the tailings, reducing their volume and facilitating proper disposal or storage. ... It is recommended to involve experienced engineers, process experts, or thickener manufacturers during the design ...
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The success of the Improving Thickener Technology team was acknowledged in 1999 when the team, led by Dr John Farrow, was awarded a CSIRO Medal for Research Achievement. Thickeners ' a …
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PROCESS FLOWSHEET DESCRIPTION: Continuous counter-current decantation cyanidation flowsheet. ORE TREATED: Gold and silver ores amenable to the cyanidation process and where economics justify plant outlay. ADVANTAGES: By producing the precious metals in bullion form, the highest net return is realized on many …
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Xinhai provides mineral processing technology, equipment manufacture and one-stop service for mineral processing plant, which solve many problems for mine investors. ... High-efficiency Thickener. Increase the efficient settlement area volume; Add the feed pipe under the liquid level, deaerating tank, inner over , and zigzag overflow ; ...
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How a Thickener Works. Thickening or dewatering may be defined as the removal of a portion of the liquid from a pulp or slime …
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Over the years, nomenclature has been adopted that is specific to thickener functions in the mineral processing industries. The solid-liquid mixture that is to be separated by sedimentation is known as the feed. The sedimented material having a solids content higher than that of the feed is the underflow. The clarified liquid from which solids ...
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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.
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Global minerals processing operations can reduce costs, increase productivity and lower health and safety risks thanks to our new energy- and water-efficient technologies and processes. ... Optimising thickener feedwells in minerals processing can enhance throughput, improve unit stability, reduce downtime and save companies costs, …
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The development status and research progress of inclined plate sedimentation equipment, as well as the research progress of how to prevent the blockage of sedimentation channel were discussed. The main disadvantages of traditional inclined plate thickener were analyzed. A kind of new type lamella thickener which could …
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From a minerals processing point of view, there are many technologies that could benefit from auditing and/or optimisation. ... So, taking a thickener as an example, its inefficient operation can lead to excessive flocculant and reagent consumption, increased solids carry over in the overflow system, reduced underflow densities, increased ...
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Gravity thickeners generally retain 80−90% of the solids in the thickened product stream, depending on the sludge characteristics and the efficiency of the preceding conditioning stage. The sludge characteristics also govern the solids loading rate (SLR), which is the rate in kg/d at which the sludge dry solids enter the process per unit …
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Thickeners ' a mysterious black box. Most of the world's minerals pass through solid-liquid separation in a thickener at some …
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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). The driving force for the separation is gravitational, where the …
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Water plays a vital role in mineral processing and about 2-3 tons of water is used for the treatment of one ton of ore. The objective of water recovery in thickener is to increase the solids concentration at the underflow to obtain clear water at the overflow.
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The application of thickener modeling and optimization software in the wastewater treatment plant of mineral processing illustrates an optimal control operation with stable underflow concentration. ... it is possible to make the thickener overloaded and the mineral particle loss when the mud bed level is high enough. On the other hand, if …
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True enough, a thickener doesn't make a racket like a ball mill, or spew out froth like a flotation machine, or bounce up and down like a jig, but down inside that big tank there is a lot going on just the same. ...
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Mining thickeners are the common equipment for dewatering process in mineral processing plants. They are used to concentrate thinner pulp into thicker pulp and separate liquids containing …
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THICKENERS. 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. …
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In the current ore dressing process, most mineral processing plant adopt wet separation process, so the concentrate has very high water content, which can't be smelted directly. ... After several improvements of Xinhai, this thickener is equipped with larger processing capacity, lower overflow turbidity and higher discharging concentration. It ...
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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, …
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Maximization of water recovery in thickeners is an essential step in the mineral processing industries. The Gol-E-Gohar iorn ore processing plant uses a center pier thickener with a diameter of 38 ...
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The thickening process is subjected to the feed flow and material quality perturbations, parameters that require to be controlled. The objective of control is to keep a stable % of solids in the thickener underflow discharge, while the internal layers of clear water, pulp interface and thickened mud bed (layer) (figure 1) are kept in defined ranges, …
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