Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
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Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
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Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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Conventional Applications. Many thickeners suffer from short circuiting and high flocculant consumption because of poor feedwell design, as shown in Figure 1 below. The rotational flow in the feedwell …
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High Rate Thickeners include a number of innovative features in design. Our Directional Autodil™ and Turbodil™ systems auto-dilute feed while optimizing …
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90% to cut-out the power supply and close the slurry feed; There are two types of lifting devices for bridge type thickeners: Small and medium diameter thickeners will normally incorporate a Centrally Mounted Lifting Device supported by the drive head that is fixed to the bridge structure. A screw is attached to the shaft of the raking arms ...
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Figure 1. Conventional thickener. Depending on the configuration of the plant, the type of mineral and the thickener technology, the recovery of water can vary between 65% to 95% of the process water, as shown in figure 2. Figure 2. Water balance of a high-density thickener in an iron ore concentrator plant
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The feed launder terminates in a feed well located at the centre of the tank. The feed well is designed to break the fall of the slurry and dissipate the energy. Download : Download full-size image; Figure 14.1. Sketch of a Thickener Showing the Access Bridge, Feed Well, Rakes Supported by the Central Column and Cables and the Underflow …
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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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two basic types of continuous thickeners: Conventional and High-rate. Conventional Thickeners These thickeners differ in the way they are built. Some examples of basic differences are: • Bridge supported • Center column supported • Traction drive The feed stream is brought to the center of the thickener in a pipe or open launder and
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Most common problems in thickener operations (part 2) WebThis results in unstable thickener phases (clear, interface and mud layers, see figure 4). As a rule of thumb, in conventional thickeners, the interface level should …
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global leader in high-rate thickeners. 100+ times smaller footprint with comparable flocculant consumption to conventional rake thickeners and no moving parts. Feed densities up to 55 % discharging underflow at 70 % (solution could be halved) – no other thickener can compare.
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The quality of solids to be handled. Usually expressed as area per unit weight of dry solids per day. High rates usually require a combination of a stronger thickener mechanism and a lifting device. …
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more than 10 times compared to conventional thicken capacity thickener will significantly reduce the foot higher concentration of underflow, clearer overflow
DetailsHigh rate thickener units are provided in sizes ranging from 5' to 250' in diameter, and can accommodate drive head torques of up to 4 million foot pounds. They are available in shaft or cage driven models. Shaft drive thickeners can be truss or beam supported for heavy duty applications. A heavy duty drive unit with precision bearing and gear ...
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High-rate thickeners are designed to provide roughly 12 times the throughput of conventional machines of similar size. The key features for high-capacity thickeners are the feedwell design and the feed slurry dilution method. Our patented E-Volute™ …
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The pilot-scale thickener facility used in this study is a closed loop system and is shown schematically in Fig. 1.A sample of slurry is mixed continuously in a 4.5 m 3 mixing tank, and pumped out of the mixing tank underflow into the pilot thickener. The thickener tank is a 2 m diameter by 2 m high side wall tank with a 14° floor and a small …
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This modification facilitated dilution of the thickener feed stream, reducing it from a maximum of 16.6%w/w to 10.3%w/w feed solids concentration. ... 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 ...
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In conventional thickeners, feed wells are cylindrical, and frequently baffled. In Lamellas and other types of thickeners, the feed wells can be an adjacent tank, a rectangular …
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Conventional Thickeners are generally incorporated in heavy duty applications when the underflow density is high and substantial torques are required to convey the settled …
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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 a given slurry. Conventional thickener. ANDRITZ process engineering will determine the optimum percentage of feed ...
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This was accomplished by recycling thickener overflow to the feed launder and controlling feed solids at 10%. Floccule Destruction. Too high slurry velocity in the feed launder caused the floccules being formed to be destroyed in the centerwell dropbox. The increased flow associated with the lower feed solids caused even greater turbulence in ...
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High Capacity Thickener. Previous. Next. Conventional practice is to add flocculant as a dilute solution to the feed slurry in a launder or feed pipe, possibly using staged …
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Fiberglass Water Troughs Provide Outstanding Strength & Corrosion Resistance. 50 % stronger than conventional 1/4" units, Enduro reinforced plastic troughs are built with laminated layers of 24 oz. woven roving throughout. Its glass fiber reinforcing content and alignment produces outstanding rigidity and the ability to support higher loads ...
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A comparison of factors associated with conventional and high-rate thickeners is summarized in the table. As slurry is fed to a high-rate thickener, dilute flocculant is …
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In a Conventional Thickener the feedwell is located in the upper part of the tank. When the feed enters it, it is diluted to the so-called conjugate concentration by an upcoming flow of water. The diluted suspension settles at a constant velocity to form sediment at the bottom of the tank. Figure 8.12 shows a scheme of a conventional …
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The Lamella Settler consists of 4 major compartments positioned along a rectangular settler tank with an inclined backside at a slope of 45-60 degrees. The sections are: A central slurry feed launder with a feed connection. Two plate pack compartments with overflow launders that straddle the feed launder. Each stack consists of a set of plates ...
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Conventional practice is to add flocculant as a dilute solution to the feed slurry in a launder or feed pipe, possibly using staged addition so as to improve ... Flocculant use was comparable in most cases to that which was employed in conventional thickeners operating at a much lower throughput per unit area. ... Feed to the Hi …
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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 …
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dilution between that of the thickener feed and the onset of compression, are subjected to laboratory batch settling. The settling rate of each sample is determined and the unit area requirement, (A), expressed in square feet per ton of dry solids per day is derived from the expression: A = 1.33 (F-D) R r where F = Feed dilution
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Treatment of pulp and paper mill wastewater by . ... conventional thickener compaction zone price . RP-4 Gold Shaker Table Sale - 911Metallurgist. ... Feed water quality . 2000 ppm anionic load free from suspended solids @ 40 deg C ...
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Design considerations. The bridge design had to be strong enough to support the tails piping along with the feed piping. Whereas most conventional thickeners facilitate tails piping in an underground trench, site conditions at Ok Tedi required that Outotec's design had to be strong enough for the alternative approach, yet still light …
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Both the filtrate and the thickener overflow are usually recycled into the plant feed as shown. 5.1.1 Design and scale-up of conventional one-pass clarifiers The design overflow rate (flow rate per unit area of liquid surface) in conventional one-pass clarifiers is usually from 1 to 3 m/hour, depending on the degree of flocculation.
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Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
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PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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