Electrical Separation

Question 1

The physical separation of
particles based on the electrical properties of the mineral particles.

Answer 1

Electrical Separation

Question 2

an atom contains equal numbers of protons and
electrons

Answer 2

Electrically Neutral

Question 3

contains less electrons than protons

Answer 3

Positively Charged

Question 4

contains more electrons than protons

Answer 4

Negatively Charged

Question 5

are materials which permit electrons to flow freely from atom to
atom and molecule to molecule.

Answer 5

Conductors

Question 6

are materials which impede the free flow of electrons from atom to
atom and molecule to molecule.

Answer 6

Insulators

Question 7

is the process of separating opposite charges within an object. The
positive charge becomes separated from the negative charge.

Answer 7

Polarization

Question 8

results in a transfer of electrons between the
two objects which are rubbed together.

Answer 8

Charging by friction

Question 9

the phenomenon of an uncharged body
getting charged merely by the nearness of a charged body.

Answer 9

Charging by induction

Question 10

involves the contact of a charged object
to a neutral object.

Answer 10

Charging by conduction

Question 11

The basis of any ____is the interaction between an external
electric field and the electric charges acquired by the various particles. Particles can be charged by:

Answer 11

Electrostatic Separation

Question 12

particles placed on surface are
made to repeatedly contact one another as well as the surface; the
surface will acquire electrons from one type of particles and give
electrons to another type so that two types of particles are charged
with opposite charges

Answer 12

Contacting dissimilar particles

Question 13

the particles are placed on a ground
conductor in the presence of an electric field. Then the particles will
rapidly develop a surface charge by induction.

Answer 13

conductive induction

Question 14

corona discharge is obtained by appropriate
shaping of the electrodes. These ions charge the particles by
bombardment when the mineral particles are caused to pass within
the corona.

Answer 14

Ion bombardment

Question 15

The attraction of particles carrying one
kind of charge (positive or negative) towards an
electrode of the opposite charge.

Answer 15

Lifting Effect

Question 15

non-conducting mineral particles,
having received a surface charge from the electrode, retain this charge and are pinned to the earthed surface
due to the attraction between the charged nonconducting particle and the grounded surface.

Answer 15

Pinning effect

Question 15

In ____, ore consists of minerals
of various dielectric\ constants is suspended
in a non-conducting fluid whose dielectric
constant is intermediate between that of two
groups of minerals and a converging electric
field is set up within the suspension. It has no
industrial application

Answer 15

Dielectric Separator

Question 16

In a ____, the mixture of ore minerals is fed on to a
grounded rotor into the field of a charged ionizing electrode.

Answer 16

High Tension Separator