Question

If $PbS$ can be separated from $ZnS$ by electrostatic separation method. The property on which this method is based on, is
A.$PbS$ is a good conductor and $ZnS$ is a poor conductor of electricity
B.$PbS$ is a bad conductor and $ZnS$ is a good conductor of electricity
C. Both $PbS$ and $ZnS$ are good conductors
D. Both $PbS$ and $ZnS$ are bad conductors.

Answer 1

Separation of minerals using differences in their electrical properties may be carried out by using an electrostatic separator. The electrical conductor will separate minerals such as cassiterite from those nonelectrical conductors such as zirconium and siderite.

Complete step by step answer:
The electrostatic method separates particles of different electrical charges and, when possible, of different sizes. When particles of different polarity are brought into an electrical field, they follow different motion trajectories and can be caught separately. Here, in the electrostatic separation method, the separation takes place when one conductor is good and the other should be poor. Hence,$PbS$ is a good conductor and $ZnS$ is a poor conductor of electricity.
Thus, option A is the right answer.
$PbS$ can be separated from $ZnS$ by electrostatic separation method. The property on which this method is based, is $PbS$ is a good conductor and $ZnS$ is a poor conductor of electricity.

Note:
They are used to recycle water, the water can be recycled into the existing water circuits of the processing plant, greatly reducing the demand for expensive freshwater. In practice, electrostatic separators will always be tested in several stages, as one pass separations producing clean products are rare. Inherent physical properties of mineral particles (specific gravity, grain size and composites, surface coating) and their interrelationships all affect the ease of separation. In addition, the number of operating variables (temperature, voltage, rotor speed, and electrode configuration) makes a number of trials necessary to determine optimum conditions for separation. Separation is affected by passing the particles onto a rotating metal cylinder (the roll); without any external forces, all the particles will follow a ballistic trajectory when leaving the roll surface.