How does a spiral classifier work?
The spiral classifier separates the respective feed slurry into a dewatered coarse material and a fine slurry. It consists primarily of an inclined tub and a transport screw for the coarse material. The fine material residue is at the lower end of the tub; the coarse material residue is at the upper end.
What is a spiral classifier?
A Spiral Classifier is a machine that is primarily used to classify the slimes (fines) from a coarser, sandy sized material. It has an inclined trough with one or two spirals revolving slowly and free from touching the sides or bottom of the tank.
On what principle centrifugal non mechanical classifier hydrocyclone is based?
Principal features of the hydrocyclone. The operating principle is simple: the fluid, carrying the suspended particles, enters the cyclone tangentially, spirals downward and produces a centrifugal field in free vortex flow.
What is a mechanical classifier?
[mi′kan·ə·kəl ′klas·ə‚fī·ər] (mechanical engineering) Any of various machines that are commonly used to classify mixtures of particles of different sizes, and sometimes of different specific gravities; the Dorr classifier is an example.
How does a screw classifier work?
The working portion of these two classifiers are the RAKES or SPIRAL/screw which are placed into the flow of ore. To separate the two, the rakes and the spiral will pull the all of the slurry back up the incline, then, let it go to flow back down towards the underflow or in this case the fine ore discharge point.
What is the rake classifier?
A type of mechanical classifier utilizing reciprocal rakes on an inclined plane to separate coarse from fine material contained in a water pulp, overflowing the fine material and discharging the coarse material by means of an inclined raking system.
What is the principle of classifier?
Usually the principle of the classification is based upon the various densities, specific gravity, terminal falling velocities of particles in liquid and in air.
What’s the difference between cyclone and hydrocyclone?
In general, cyclones use centrifugal force to separate particles in a gas or liquid stream. In hydrocyclones, liquid is the fluid medium. Larger or heavier particles (the coarse) are thrown to the sides and slide to the bottom, where they are collected.
What is centrifugal classifier?
[‚sen′trif·i·gəl ′klas·ə‚fī·ər] (mechanical engineering) A machine that separates particles into size groups by centrifugal force.
What is screw classifier?
Nesans T Series Screw Classifiers or Spiral Classifier are compact size, high performance wet classification machinery used in lower capacity manufactured sand production units. Output from the spiral classifier can be fed into Nesans’ D Series Dewatering Screen for effective moisture control.
Which apparatus used for hydraulic classifier?
The sieve-plate trough hydraulic classifier, also known as the Denver Hydraulic classifier, is the equipment that makes use of the sieve plate to cause the interference settlement condition. The body shape is a pyramid-shaped box, the box is divided into 4 ~ 8 classification rooms by vertical partition board.
Which is the working principle of a centrifugal pump?
The working principle of centrifugal pump: (1) The impeller is rotated by the pump shaft to work on the fluid between the blades. The fluid is subjected to centrifugal action and is thrown to the periphery by the center of the impeller. When the fluid reaches the periphery of the impeller, the flow [email protected] ZBPump Topic ENCN Home
What’s the maximum size of a spiral classifier?
The spiral classifier is divided into two types: high weir type and submerged type. High weir classifier is suitable for coarse particle classification, the maximum size of overflow is generally 0.4~0.15mm; submerged classifier is suitable for fine particle classification, the maximum size of overflow is generally below 0.2mm.
What kind of classifier is single spiral in grinding circuit?
There are four classifiers: high weir single spiral and double spiral, submerged single spiral and double spiral. Need help from engineers? The spiral classifier is widely used in the classification of the grinding circuit of the concentrator and the operations of washing, desilting and dewatering.
Which is better vortex or volute casing in centrifugal pump?
Vortex casing is a circular chamber in which introduce between the impeller and casing. here the fluid from the impeller has to first pass through the vortex chamber and then through the volute casing. In such a case, there is better conversion has done that is velocity energy into pressure and it has good efficiency than the volute casing.