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The size of the particles discharged to the tailings pond is controlled by two methods. First, the volume of feed water is adjusted to flush the pool at the bottom of the spiral classifier. The more water that flows in, the coarser the particles that are discharged to the tailings pond.
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May 15, 2016 2. Spiral classifiers. A typical spiral classifier is shown in Fig. 1. The geometry of a spiral is characterized by the length or number of turns, the diameter, the pitch and the shape of the trough ( Burt, 1984 ). The spiral feed is a mixture of water and ground particles that is gravity fed at the top of the spiral.
Sep 23, 2019 Below, we will specifically analyze how these three factors affect the classifying effect of spiral classifier. 1.Fote Mining Machinery Co. The feeding of the spiral classifier. There are mainly two factors that affect the classifying effect of the spiral classifier in the aspect of feeding, one is the mud content of feeding, another is the composition of particle size.
Feb 01, 2021 For each feed size, the value of the breakage rate S 1 was constant with respect to grinding time, ... class 2 and class 3 should be separated from the grinding products by a hydrocyclone or the spiral classifier before the grinding time reaches the turning point, and then class 1 should be returned to the mill for further grinding.
Oct 01, 2020 Furthermore, the spiral classifier and the hydrocyclone displayed low performances during the classification process. The 50% passing sizes of the spiral classifier reached 317 μ m for U/F, which is substantially higher than the corresponding values of 51 μ m for the feed and 45 μ m for O/F. For the hydrocyclone, the 50% passing sizes of the ...
3.It can classify the ground material powder from the grinder, spiral the coarse grain into material inlet of grinder through the spiral chip, and discharge the classified fine grain from overflow surface. 4.Its base is made from channel steel, and its body is welded from steel plate. 5.The lower support of spiral bearing is of engine-bearing ...
Spiral classifier. Kobesh machine’s classifiers manufacturing with 3 types: Spiral classifiers, Bucket and rake classifiers. Coarse Material Washers are used to wash coarse sand or crushed stone and gravel to dewater the cleaned material sufficiently so it can be conveyed to storage.
Commercial units range in size from RC 850 up to our largest, the RC 3000 unit. Actual unit capacities are related to the type and size of feed material (refer chart on page 4). Typical coal capacities up to 200 tph treating -1.4 mm + 0.250 mm feed. Typical hematite ore capacities up to 250 tph treating -0.300 mm + 0.075 mm feed Key aspects
Apr 28, 2007 Conventional air classifiers have in general cut sizes of above 1 μm (ϱs = 2710 kg/m3). The development of new and better products, for instance in …
Nov 13, 2020 When the classification particle size is as fine as 0.037 mm, the cyclone classification effect is significantly higher than other classification equipment. Simple structure. No moving parts, easy to cast. Less space demand. Under the same processing capacity, the hydrocyclone covers an area of about 1/30 to 1/50 of the spiral classifier.
Nov 02, 2020 The higher the overflow weir of the spiral classifier, the finer the classification particle size. In production, you can appropriately adjust the height of the spiral classifier overflow weir according to the requirements of grinding fineness. (3) Rotate Speed. The rotate speed affects the agitation strength and the ability to transport sand back.
The Spiral Classifier is available with spiral diameters up to 120″. These classifiers are built in three models with 100%, 125% and 150% spiral submergence with straight side tanks or modified flared or full flared tanks. The spiral classifier is one of the size classifying equipment for the mining industry. It is a kind of equipment for ...
The spiral classifier works by virtue of the principle that the size and specific gravity of solid particles are different, so the sedimentation rate in liquid is different. Fine ore particles float in the water and overflow, while coarse ore particles sink at the bottom of the tank and are discharged by spiraling upward to perform mechanical ...
Aug 06, 2015 Spiral classifier. Another mechanical classifier is the spiral classifier. The spiral classifier such as the Akins classifier consists of a semi-cylindrical trough (a trough that is semicircular in cross-section) inclined to the horizontal. The trough is provided with a slow-rotating spiral conveyor and a liquid overflow at the lower end.
Spiral Classifiers are available in sizes up to 120″ diameter, three tank styles, single, double and triple pitch spirals, three degrees of spiral submergence —flexibility to provide a unit built for your job. Write for detailed recommendation on the correct size and type of Spiral Classifier to …
May 26, 2016 The Cross-Flow Classifier is ruggedly constructed and the tank is thoroughly reinforced. Bearings are Jarge and all gears are enclosed. The 6″, 9″, and 12″ sizes have replaceable hard cast iron flight sections on a square shaft. The 18″, 24″, and 30″ have replaceable hard cast iron flight sections.
Oct 27, 2020 As the size range of the feed to the spiral becomes smaller and smaller, the separation will be more accurate. Typically, the ideal feed size range for spiral is + 75–1690 micron . In the case of chromite ore, the most suitable spiral efficiency can be obtained in the size range of + 75–3000 micron . Due to the fact that the separation process in a spiral depends on the particle size, the operation of …
Oct 31, 2015 The cyclonic ultrafine classifier is designed to achieve separations in the region of 270 mesh size (50 micrometer) to 1250 mesh size (10 micrometer) with a top feed size of 4 mesh size ( 5mm). The cyclonic ultrafine classifiers are very low maintenance even on highly abrasive feeds.
Aug 06, 2015 The UF solids % wt. must be correlated with the yield stress….look for 30 Pa high-end cut off value for lean operation. When the ore or grind size changes, you need to repeat the evaluation. My take on these classifiers is that the clear water added to the classifier feed determines the size of the largest heaviest particle going to the overflow.
Jul 12, 2016 Screw Classifiers. Screw classifiers such as the Akins and Wemco consist of a semi-cylindrical trough, usually set at a slope of from 2 to 3 - in. per ft., in which rotates a helix or spiral at from 2 to 8 r.p.m. depending upon size and conditions to be met. The feed is introduced through the side of the tank just below the pulp level.
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