Spiral classifier is used for material classification with spirals used to stir and convey materials according to the difference in material settling velocities. It is a kind of gravitational and hydraulic classifiers.

The commonest equipment in Ore Dressing are cyclones and spiral classifiers. The following work provides a comparison between these two devices as to their application in the mineral industry, as well as parameters for costs estimates. CYCLONES. Cyclones or hydrocyclones are recently-developed devices.

A spiral classifier is a mineral processing equipment which receives an ore slurry input and performs a gravity separation process between the solids particles of ore and the water. The...

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 …

Screw-Spiral Classifier: Select, Size & Install - 911Metallurgist. The size of mechanical classifier required for a particular job depends on the following factors: Tons of dry solids to be overflowed per 24 hours. This is simply a predetermined tonnage. Mesh size at which separation is to be made.

The spiral classifier was originally developed for closed circuit grinding It has since been applied very successfully to other classification duties where a two-product size split is required. Inherent operational qualities of this classifier make it ideally suited for sizing, washing, or dewatering materials such as ores, phosphate rock ...

A spiral classifier is shown in Fig. 1. The spiral feed that consists of a water-slurry of ground ore enters the top of the spiral. As the slurry enters the spiral various forces ( Burt, 1984) act on the particles to operate the separation between light, heavy, coarse and fine particles.

A semi-empirical mathematical model for a spiral classifier is proposed in this paper. The model is based on the observations of the movement of particles within the trough of a spiral and makes use of several hypotheses that still need to be validated with dedicated experiments.

Spiral concentrator and spiral plant modelling of chromite bearing ore is investigated in this paper. Spiral product stream responses (grade and recovery) were modelled according to variations in feed conditions (grade, density, flow rate) and primary splitter settings.

Common spiral classifiers include high type and submerged type. The high type is usually used for coarse-grain classification, and the diameter of the overflow particle size of the classification is generally greater than 0.15mm.