SOLID-SOLID BOSS

Question 1

Is a process of separating solid material from each other

Answer 1

SS Sepa

Question 2

SS Sepa Depend on physical property of the components like ?

Answer 2

size
density
magnetic properties

Question 3

A physical process

Answer 3

SS Sepa

Question 4

Process used to separate solid mixtures based on particle size

Answer 4

Screening

Question 5

Screening Can be done using ?

Answer 5

Single sieve or set of sieves

Question 6

Is defined as the diameter of the largest sphere that can pass through the mesh opening

Answer 6

Aperture/Equivalent Diameter

Question 7

The number of wires or openings per linear inch counted from center of any wire to a point exactly 1 inch

Answer 7

Mesh

Question 8

For the particle to pass through the sieve, the CSDimension must be? than the mesh opening

Answer 8

smaller

Question 9

Particles must have __ dimensions smaller than the equivalent diameter

Answer 9

2

Question 10

Classic type of sieve

Answer 10

Sieve with metallic mesh

Question 11

To find the equivalence of mesh to nominal aperture, consult to?

Answer 11

ASTM E-11 Standard

Question 12

Metallic perforated plates has either ___, ___, or ____ holes

Answer 12

square
round
rectangular

Question 13

Type of sieve when the holes are 4 mm or above

Answer 13

Sieve with perforsted plates

Question 14

Made of nickel that gone through chemical erosion process

Answer 14

Sieve with electroformed plates

Question 15

Range of apertures is from

Answer 15

2mm to 5 micrometer

Question 16

Principal characteristic of Electroformed plates

Answer 16

high precision

Question 17

Particles that can be separated by gravity

Answer 17

larger than 5 micrometers

Question 18

Particles smaller than 5 micrometers exhibit?

Answer 18

Brownian motion

Question 19

Types according to Density Gradient

Answer 19

1. Rate zonal
2. Isopycnic or sedimentation equilibrium

Question 20

Separation is based on apparent / buoyant density in solution

Answer 20

Isopycnic or sedimentation equilibrium

Question 21

Density of surrounding fluid which at which the material neither float nor sediment

Answer 21

Buoyant density

Question 22

Technique used to separate and purify bilogical objects

Answer 22

Differential cetri

Question 23

Involves rotating samples at high speeds achieving high g-force sepa

Answer 23

Ultracentrifugation

Question 24

Ultracentrifugation can generate forces ranging from?

Answer 24

100K g to 1M g

Question 25

Used to purify and characterize a wide range of substances from low-molecular polymers to multimagadalton protein complexes

Answer 25

Ultracentrifugation

Question 26

Are essntial when bulk materials differ significantly in their physical properties

Answer 26

Air classifier

Question 27

Used when particles within bulk material require fast and effcient sepa

Answer 27

Air classifier

Question 29

The working princple in Air classifier are

Answer 29

air drag and centri Force (inertia)

Question 30

Becomes dominant as particle size decreases, causing lighter, finer particles to be carried away bu airflow

Answer 30

Air drag

Question 31

Air classfiers are effective for sepa of dry materials with sizes small than ?

Answer 31

100 mesh (149 microns)

Question 32

Types of air classifiers

Answer 32

Gravitatonal Gravitational-inertial Centrifugal

Question 33

Passing a current of air through a curtain of falling material and separates fine less than 150 mesh to 150 microns

Answer 33

Gravitational Air classifiers

Question 34

Application of Gravitational Air classifier

Answer 34

Product dedusting Minerals processing Potas Salt

Question 35

Passign a current of falling material and then recirculating the entrained fines back, 300 and 36 microns

Answer 35

Gravitational-inertial

Question 36

separates 100 micron to 15 microns

Answer 36

Centri Air Classifier

Question 37

versitle process for sepa particles in a mineral/water slurry based on the tendency of air bubbles to attach to specific mineral surfaces

Answer 37

Flotation

Question 38

S-L sepa that can be used to selectively sepa hydrophobic materials from hydrophilic waste gangue

Answer 38

Flotation

Question 39

Most common application of flotation

Answer 39

Waste and wastewater treatment

Question 40

methods of froth flotation

Answer 40

Direct Reverse

Question 41

Mineral sticks to the air bubbles

Answer 41

Direct

Question 42

Gangue sticks to the air bubbles

Answer 42

Reverse

Question 43

An organic compound that selectively attaches to the surface of the minerals and adds water-repelling nature to the articles

Answer 43

Collector

Question 44

Group of compounds that help stabilize the foam

Answer 44

Frother

Question 45

Make mineral surface hydrophobic, thus float

Answer 45

Activator

Question 46

Deactivates the surface making it sink

Answer 46

Depressant

Question 47

Advantages of flotation

Answer 47

1. All types of minerals can be separated 2. Suface properties can be controlled by flotation reagent 3. Highly appropriate for sepa of sulphide minerals

Question 48

Is a water-treatment process that clarifies waste water by removing suspended solids, oils, greases, BOD, COD, and metals

Answer 48

Dissolved air flotation

Question 49

Process of dissolved air flotation

Answer 49

1. dissolve air in WW under pressure 2. Relase air at ATM 3. Relaseds air forms tiny bubbles that adheres to the suspended matters and float

Question 50

In dissolved air flotation, the suspended matter can be removed by?

Answer 50

skimming device ready to dewater for proper disposal

Question 51

Clarifies WW by injecting gas bubble to the flotation tank

Answer 51

Induced gas

Question 52

Device that separate magnetic substances from non-magnetic ones

Answer 52

Magnetic separator

Question 53

Is done by passing the mixture through a magnetic field generated by separator

Answer 53

Magnetic separator

Question 54

Magnetic susceptibility

Answer 54

Paramagnetic Diamagnetic Ferromagnetic

Question 55

Weakly attracted to the magnetic field

Answer 55

Paramagnetic

Question 56

Materials are repelled

Answer 56

Diamagnetic

Question 57

Exhibit strong magenitism, easily separable

Answer 57

Feeromagnetic

Question 58

Use rotating magnetic field to generate currents known as eddy currents

Answer 58

Eddy current separators

Question 59

Eddy current induce a magnetic field with materials passing through causing a repulsive force that deflects a material away from the separator

Answer 59

Eddy current separators

Question 60

designed to be suspended above conveyor belts or chutes to remove ferrous contaminants from material flow

Answer 60

Suspension magnetic separators

Question 61

Are installed directly on converyor systems to remove ferrous contaminants with statioanry magnetic assemby

Answer 61

Conveyor belt magnetic separator

Question 62

Features a rotating drum equippend with a magnetic elements, typically made of rare earth magnets

Answer 62

Drum magnetic separator

Question 63

Harness the power of electric firlds to separate materials according to their electrical properties and the variation in charging is exploited to acheive sepa

Answer 63

Electrostatic sepa

Question 64

General process of Electrostatic sepa

Answer 64

1. Charging 2. Sepa 3. Collection

Question 65

Particles are charged by ion bombardment or by contact with a charged surface

Answer 65

Charging

Question 66

Charged particles are Introduced into the electric field

Answer 66

Sepa

Question 67

Based on their respective charges, they have different trajectories

Answer 67

Collection

Question 68

Are commonly used for separation of conductve minerals and non-conductive and apply high-Volt DC

Answer 68

High tension roll separators (HTRS)

Question 69

Use metal plates cahrged with electric current to separate smaller particles

Answer 69

Electrostatic palte and Screen Separators