crushers - · pdf filetypes of jaw crusher main types blake type double toggle blake type...
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CRUSHERS
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CONTENTS Introduction
Types of Crushing (Primary, Secondary, Tertiary)
Flowsheet for crushing plant
Open circuit & Close circuit crushing
Jaw Crusher (Introduction, Types, Construction, Rating),
Gyratory Crusher (Introduction, Rating, Construction),
Comparison of Gyratory & Jaw Crushers
Cone Crushers (Introduction, Types, Construction, Parameters),
Roll Crusher (Introduction, Types, Parameters, Surface),
Impact Crushers (Introduction, Construction, Parameters, Types),
Rotary Coal Breaker
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Introduction & Types of Crushing
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What is crushing?
Main objectives of crushing
Types of Crushing
Primary Crushing
Secondary Crushing
Tertiary Crushing
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PRIMARY CRUSHERS
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Introduction to Jaw Crusher
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What is a Jaw Crusher?
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Types of Jaw Crusher
Main types
Blake type
Double toggle Blake type
Single toggle Blake type
Dodge type
Universal type
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Double toggle Blake type
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Single Toggle Blake Type
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Comparison B/t
Double Toggle & Single Toggle
Parameters
Type of motion
Capacity
Wear
Maintenance cost
Capital cost
Nature of material
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Free crushing & choked crushing
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Jaw Crusher Construction
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Main Frame (in sections)
Jaws & Liners
Cheek Plates
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Characteristics of Jaw Crusher
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Angle b/w jaws
Speed
Throw
Set
Safety Spring
Capacity
Energy requirements
Reduction ratio
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Drawbacks of Jaw Crusher
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180 degree machine
Not suitable for stick Material
Lumps passes without crushing
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Applications of Jaw Crusher
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Gyratory Crusher
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Introduction, Construction & Working
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Characteristics
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360 degree machine
Much higher capacity than jaw crusher
Crusher size
Power consumption
Feeding mechanism
Use of grizzlies ahead of crusher
Choking
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Comparison b/w Jaw & Gyratory
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Size of ore
Capacity required
Capacity formulas
Capital and maintenance costs
Size of the machine
Foundations
Feeding mechanism
Sectioning
Type of the material being crushed
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SECONDARY CRUSHERS
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CONE CRUSHER
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Introduction
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Characteristics of Cone Crusher
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Throw
High speed action
Parallel section b/w liners at discharge
Distributing plate
Set
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ROLL CRUSHER
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Introduction & Mode of Operation
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Types of Roll Crushers
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Single Roll type
Double Roll type
Three Roll Type
Four Roll Type
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Parameters affecting performance
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Angle of nip
Speed of roll
Size of roll
Capacity of roll crusher
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Surface of Roll Crusher
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IMPACT CRUSHER
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Introduction & Mode of Operation
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Applications of Impact Crushers
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Stress-free stone production for brick making, building &
road making
Used in quarrying operation for crushing plastic material
Produce cubical product
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Construction & Working
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Parameters of Impact Crushers
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Weight of hammer
Speed of rotor
Nature of feed
Reduction Ratio
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Types of Hammer Mill
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Fixed Hammer Mill
Rotary Hammer Mill
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