Improve the selection effect of electrification

In order to improve the sorting effect of the electric sorter, different preparations should be taken according to the nature of the material and operating conditions before clicking. Commonly used preparation operations include drying, de-sludge and grading of materials, and surface treatment.

(1) Drying

There are many methods for drying. In the laboratory, a constant temperature drying oven can be used. In the production, there are commonly used drum dryers, air flow dryers, boiling dryers, and drying ovens. The requirements of the product, equipment manufacturing, floor space, labor conditions, etc. can be selected according to the nature of the material.

(2) Desliming and grading

In the cylindrical electric separator, since the centripetal force required for the circular movement of the coarse ore particles is large, the coarse ore particles are preferentially enriched in the conductor product, and the fine ore particles are preferentially enriched in the non-conductor product. In order to avoid this sorting by particle size, the material often needs to be sieved before electro-election. When the material contains a large amount of fine ore particles (less than 40 microns), the separation process is affected because the fine ore particles will stick to the grounded cylinder electrode, generate dust and cause spark discharge between the high voltage electrode and the ground electrode. Destruction, so it needs to be degreased beforehand.

The grading of the electrified material is generally carried out by dry sieving, sometimes by wind grading, or in a box type electric sorter.

(3) Mineral surface treatment

The effect of electrification depends to a large extent on the surface condition of the mineral. The surface condition of minerals can sometimes be artificially altered by pretreatment methods, for example, by treatment with chemicals to remove certain components from the mineral surface, allowing the mineral surface to selectively adsorb the agent to form a new surface film. Selectively change the conductivity of different minerals to facilitate sorting.

Drift Eliminators, made out of rigid PVC, are designed to remove entrained particles from air steam efficiently, with minimum pressure drop, thereby reducing the fan power requirement when the air passes through the Drift Eliminator.