Download - Operaciones Mineras II
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Technical English II
Mining operations
Susana Daz Merino
Teacher of English
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Objectives
To identify concepts related to typesof mineral.
To review the mining cycle process. To develop exercises.
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Learning 1
Minerals
rying
!oasting
Test "pril ##nd
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Mining
Mining is the process of extracting mineral from theearths crust, the land and the seas.
There are two types of mining, underground and open pit.
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Stages in mining
There are four stages to mining:
Prospecting: looking for mineral deposits.
Exploring: Evaluating the sie, shape, location and economic
value of the deposit.!eveloping: Preparing the acces to the deposit.
Exploiting : Extracting the minerals.
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Professionals
Environmental engineer
"eochemist
"eologist"eophysicist
#ydrogeologist
MinerMining engineer
Safety engineer
Mining operators
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Types of Minerals
Metalliferous $ minerals containing metal
%onmetalliferous$ does not contain metal
&rnamental stones$ used for decorativepurposes in
construction and monumental sculptures.
'uilding stones$ used in constructions
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Minerals
copper goldiron
Lead
manganese
Tin zinc
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Phosphate rock
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Travertine
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Head frame
DriftCage
Dragline Shovel Drill
ConveyorDump truck Mining skip
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(ead and answer
Process of extracting mineral from the earth)s crust refers to
Mention the types of mining
Minerals that cointain metals are
These types of minerals do not cointain metals Minerals used for decorative purposes
'orax and coal are examples of
Examples of metalliferous ores are
Mining
underground and open pit
coal, bauxite
Metalliferous ores
marble, limestone
Nonmetalliferous ores
Copper, iron, lead
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Mineral $r%sher $r%shing Mill
&ater
'roth (otation
rying
!oasting
Melting
$onverti
on
!"' E!
'inalprod%ct
coppercathod
efresh your kno!ledge
)l%rry
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rying
*ey words:!rying
!ryer
Moisture
+aporiation
#eat air
#eat transfer
(otary dryer
Screw conveyor dryer
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e*nitions
!rying process $ transfer process, consisting of the removal of
water y evaporation from a particle.
!ryer$ machine to remove water from a particle y
evaporation.
Moisture$ is the presence of li-uid, especially water into a
particle.
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+apori,ation -transition from a li%idphase to steam phase.
/eating air- the action of ma0inghot or warm the temperat%re of theair by an electrical resistor.
/eat transfer- thermic energyexchange from one place to another.
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(otary dryer$ industrial dryer used to reduce theli-uid moisture content of the material y direct contact with
heat air.
t is a cylindrical tue, usually supportedy concrete columns.
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Screw conveyor dryer$ this machine can remove water fromparticles y a indirect contact, inside of a cylindrical shell.
/carcasa .
This e-uipment consists of a gyratory screw that moves the
humid material inside the e-uipment allowing an efficientdrying.
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ryers classi*cation
Type of contact Type of process
Direct "ndirect Continuos #atch
$"n this processthe dryer never
stops of !orking
$
$"n this process the
dryer stops to load
and unload the
material$
$Heat hair is in
direct contact
!ith the dryer%&
$Heat air is incontact !ith the
cylindrical shell&
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0ook at the pictures
Drying process
'aporization otary dryer Scre! Conveyor
dryer
Heat transfer