صفحه 1:
Oenhurcp
The extractica oF wetas Pros their
pres, heat toeutveuts ued the
prooduniivad oF باه
صفحه 2:
@rocdutiod oP weds
جد( »©
سول و
Det extraciva ©
صفحه 3:
الاك
تنام خأد ججدرا ونج حرط
نت وت مسیون و
كواب لول () و
Oped pit wicicry ©
© Oredgicgy
© Goluiog cicicry
صفحه 4:
Oped vast siciery
Overburden is
removed to
uncover mineral
Earth-moving
machine
Various types of earth-moving machines are used to remove the top soil or overburden. Bulldozers are
the most common. Open cast mining is usually very economic. Sometimes explosives must be used, if
the mineral is in rock
صفحه 5:
صفحه 6:
كواب 7 و6
Pitface
‘The rack face is dled and then blasted. Ore-based rock is loaded on to dump trucks for transport ما
sil for concentrating
صفحه 7:
Buckets
bringing
ore material
to surface
Usually, some overburden must be removed before the ore layer can be got at
The ore layer is then stripped and brought on board the dredger, where itis
concentrated. Waste material is then dumped overboard
صفحه 8:
SALT LAYER
ELS ARE NOT
‘PROGRAM
3
Te BY THE Ul
fe
Water pipe Solution pipe
First, holes are drilled down into the layer
containing the substance to be mined. Two pipes
are used = water is pumped down one, while the
solution is forced up the other pipe
صفحه 9:
Ore ون
Olsv voled pre dressing, the vic is to reuse
the acount oF wet ig cack tocar oP ore. She
pre is Crushed theo yrourdd ood pooedtroted,
the Pollowieg wethods way be used:
وی زرم و
منم و
© Ouqeetic مود
مراب () و
صفحه 10:
Creviy powerdriod
©» Gowe ores ore hewier thoo the woste. Mhe ore is
shohkeu by u jolicg box, or sinclar, while wet.
weiqh, the wet way be rewoved us هروا وه
صفحه 11:
ratios
The Pioe ponicles oP ore ore sided aud it
forge toh wits oie blower ict cred Plotatize crepes
added. Dhe pontictes utack to the bubbles ocd تمصلا
to the surPace where the Proth is shicoced DPR.
صفحه 12:
2 508۲۸02 ۱۷۷۱۲ 7
PIECE OF ORE
ATTACHED,
THE BUBBLE FLOATS TO
ATTACHED!
FROTH
CHAMBER
AIR
BUBELE
COLLECTING
CHUTE
FROTH
MOTOR DRIVEN
SKIMMER,
RISING
CHAMBER
FLOTATION
صفحه 13:
Oxxnetc seperdioa
2 40 the sepercioag oP ores that hove
woyuetic properties, the ore is
qrournd ood passed puer و
dru.
© Dhe drow kes هن woqoet iuside it
ونر holds the wayaetic ore
panicles us the wuste Puls vutside
the screed.
© Vhe ore kell oo the drop coo be
released or scraped pPP.
صفحه 14:
را )را لاحن اسفن مدص سل هجو مها
صفحه 15:
MAGNETIC SEPARATION
FEED
CHUTE
DRUM
ROTATES,
STATIONARY
MAGNET
NON-MAGNETIC
Waste
DROPS OFF
MAGNETIC MATERIAL
BR 2 qe HELD TO HERE —
2 THEN IT FALLS OFF
صفحه 16:
QOetd extrocioa
The process of extractay wets Pro
772۲
5 وید - بوساه‌عمسممرظ) ket is used witty a
reduntey aged (ina uses coke) ood a Phox to produce
9 رودن ]اماع وصس عر را“ - leachiey dissvlves ore ino solved
wed theo electrolysis is used to separdie the wetdl.
صفحه 17:
وط جمس جص أواصى]|0) ۰ وداج سردو |1 9
كد أ تیه u lot oP electricity كدص 411 ورن بطم
lster popper is rePiced by .1212171255 ۳۳۲۲۲9۱
Plevirvlsis.