A training report made on the basis of 45 days training at NMDC Bailadila (C.G.)

1. NATIONAL MINERAL
DEVELOPMENT
CORPORATION
VOCATIONAL TRAINING
REPORT
MINES NAME- BAILADILA IRON ORE
MINES,KIRANDUL
Submitted by –
PRANJAL SAO

2. CONTENTS :-
• INTRODUCTION
• GEOLOGY
• MACHINERIES
• STEPS FOR EXPLORATION
• DRILLING
• CHARGING
• BLASTING
• LOADING & DUMPING
• CRUSHING
• SCREENING
• LOADING FOR TRANSPORTAION

3. INTRODUCTION :-
Bailadila Iron Ore Mines(commonly
known as BIOM) is located 100km away from Jagdalpur. It
is run by NMDC ltd. Which is a public limited company
incorporated under the Ministry of Steel,Govt. of India in
1958.
The BIOM consists of mines located
at Kirandul as well as Bacheli.
BIOM
KIRANDUL
14 11C
BACHELI
13

4. GEOLOGY :-
In the year 1934-35,Dr. Crook Shank and Dr.
P. K. Ghosh of Geological Survey of India mapped the entire
range geologically (1”=1 mile) scale for the first time. Crook
Shank(1938) divided the Iron Ore occurrences of bailadila range
into fourteen distinct deposits numbering 1 to 14.
P.K.Ghosh etal of GSI geologically mapped
the area on 1”=100 feet in 1961-63 and estimated the total reserves
of the tune of 1135 million tonnes.
Cntd…

5. GEOLOGY Cntd… :-
• Investigation By NMDC :-
Following long term agreement for the iron ore
export to Japan,NMDC comissioned its first mechanised mines in Bailadila
Deposit-14 which has been in production since 1968. Anticipating certain
constraints like handling of more waste from lower benches,having less ore
reserves etc. it was necessary to develop an alternating deposit adjacent to
Deposit-14 to initially supplement and finally replace Deposit-14 mine for
continued economic utilisation.
Based on the initial exploration conducted by
NMDC,deposit-11C was considered suitable to supplement/replace
Deposit-14 mine in future.

6. MACHINERIES :-
NAME OF MACHINE NUMBERS OF
MACHINES
SIZE/CAPACITY
ELECTRIC SHOVEL 4 8 mtr cube
DRILLING MACHINE(IDM) 5 250MM dia & 150mm dia
GRADER 3 -
DOZER 4 -
LOADER(FEL) 1 20-25 TONNES
DUMPER 11 85 TONNES & 100 TONNES
WATER TANK 3 635 LITERS
PUMP TRUCK 9 12 TONNES

7.  ELECTRIC SHOVEL
• The mining shovel
is designed &
constructed to
provide efficient
service under the
most severe
conditions.
• The machine is
built to the
highest possible
standards and
will provide
trouble free
operations if
properly
maintained.

8.  ELECTRIC SHOVEL cntd…
MAKE – Beml
MODEL - 182-M
COST – 20-25 crores
POWER – Electric (6.6KV)
BUCKET CAPACITY – 8 mtr cube(volume)
Number of E.S. present at
Deposit-11C is 04 i.e.,
ES-20 , ES-21 , ES-23 , ES-24

9.  DRILL MACHINE
• The INDIAN
DRILL
MASTER(IDM) is
designed
specially for the
purpose of
making blast
holes provided
with appropriate
whole diameter.

10.  DRILL MACHINE cntd…
MAKE – BUCYRUS
MODEL –
COST - 2.5 crores
POWER – Electric (6.6KV)
DRILLING METHOD – Rotary Drilling
Drill Rod Length – 7mtrs
(2 rods can be connected
togather as per
requirement,hence a max
depth of 14mtrs can be
drilled)
No. of IDM – 05 i.e.,
(IDM-1,IDM-4A,IDM-
5A,IDM-7 are of 250mm
dia & IDM-17 is 150mm dia)

11.  MOTER GRADER(MG)
• A Grader is generally
used in an OPEN CAST
mines for the purpose of
levelling the ground
wherever required.
• MAKE – Beml
• MODEL – BG 825
• TYPE – Diesel operated,
• 4 stroke
• FLYWHEEL POWER –
2100rpm
• No. of CYLINDERS – 6

12.  DOZER
• A BULDOZER is referred to
simply DOZER.
• It is a tractor with a pusher
blade attached to the front
portion.
• A Dozer blade is used for
pushing loose materials or
for digging in Soft
weathered rock.
• MAKE – Beml
• MODEL – BD 355
• TYPE – Diesel
• 4 stroke
• FLYWHEEL POWER –
2000rpm

13.  LOADER(FEL)
• FRONT END LOADER
(FEL) is a heavy
equipment machine
used to load materials
from surface to any
transporting body such
as Dumper.It is
hydraulically operated.
• MAKE – CAT
• MODEL – 992K
• TYPE – Diesel
• There is only one FEL
present in the deposit
11C

14.  DUMPER
• Dumpers are the main mode of transportation used in an
opencast mine.
• The dumpers are used in each n every mines for transporting the
Mineral/Ore from working place to the crushing plant.
• Dumpers are diesel
operated vehicles
which are designed
specially to make the
transportation of
mineral easy for
further process.

15.  DUMPER cntd…
• MAKE – CAT
• MODEL – 777D
• CAPACITY – 100tonnes & 85tonnes
• ENGINE – Diesel Operated
 IN DEPOSIT – 11C :-
• Total 11 dumpers are in operation
which are operated for
transporting both the Mineral to
crushing plant and waste to the
Waste Dump.
• Out of these 11 dumpers 9 are of
85 tonne while the other 2 are of
100 tonne capacity.

16.  WATER TANK
• Water tanks are
used to feed
water to the
roadways so as to
reduce the dust
particles.
• Tank Capacity –
4500-6000 litres.
• It is diesel
operated…

17.  PUMP TRUCK
• A pump truck is the
truck though which
the EMULSION is
brought to the
place of blasting
and also a system is
provided in it to fill
the blast holes with
suitable amount of
emulsion as per
requirement.

18.  PUMP TRUCK cntd…
• MAKE – Orica(3),Navbharat (3),KEL(3)
• TANKER CAPACITY – 12tonnes
• Diesel Operated
• Supply of emulsion is controlled by a system board
provided on the right side of the vehicle.

19. STEPS FOR EXPLORATION
For every mines,three steps are compulsory to extract the
minerals/ores and they are :-
DRILLING
(IDM is used)
BLASTING
(SME,Booster is used)
LOADING
(Electric Shovel is used)

20. DRILLING
In simple words, drilling can be defined as “The use of
any machine to create holes for exploration or for
charging of Explosives.”
Through drilling, we create BLAST HOLES of
depth around 14mtrs on the bench of 12mtrs.The
number of blast holes depends upon the nature of
Strata.If strata is loose then less number of holes are
required but for harder surface,more numbers of blast
holes are to be drilled.
Rotary drilling is used in NMDC for creating
the blast holes and this work is done though the machine
called as IDM.

21. CHARGING
CHARGING is the process in which “The explosives are loaded into
a blast hole for the purpose of blasting the material into which
the hole is drilled.”
PRIMEX
NONEL
D.F.
EMULSION
(SME)
STEMMING
 MATERIALS FILLED IN THE BLAST HOLES
WHILE CHARGING :-
• EMULSION – S.M.E.(Site Mixed
Emulsion) is used in an opencast
mines as explosive because it is
powerful enough to break the hard
rocks.
• BOOSTER – PRIMEX is used as a
booster which boosts/initiates the
SME for the explosion.

22. CHARGING Cntd…
NONEL – Non-Electric Initiation;A
NONEL is used to initiate the booster.Its
one end is connected to the booster
while other end is brought up to the
surface.
D.F. – Detonating Fuse; A DF is also used
as initiator to the PRIMEX, it is used as a
backup so as if due to any reason
NONEL fails to initiates DF does the job.
STEMMING :- Materials such as fine gravels, that is placed on top of blast
holes. When the explosives are fired, the stemming locks together from the
expanding gasses, and keeps the force of the explosion in the borehole until
rock begin to break.

23. BLASTING :-
Breaking of rock with the help of explosives is
called BLASTING.
It is preferred because its cheap and there is a
flexibility in this method.
 Blasting is done in a mine at
afternoon time during shift
change or during the lunch time
because at that time the workers
are not at the site and hence the
work is not affected a lot as well
as it becomes more safe.
BLAST SHELTER

24. LOADING & DUMPING :-
After Blasting, the loose rocks are
available to be transported to the
Crushing Plant for further process
hence the loose rocks so obtained are
loaded to the Dumpers through
Shovels and then dumpers dump
these materials at Hopper.

25. CRUSHING :-
The materials obtained through
blasting are not of regular size
so they are needed to be broken
into regular size which is done in
the CRUSHING PLANT.
 The process at crushing
plant advances in following
manner :-
• Dumper dumps irregular shaped
material at hopper.
• Material is passed from Hopper
to Apron Feeder and then to
Grizzly.
• The small particles fall down
through grizzly to a conveyor belt.

26. CRUSHING Cntd :-
• Those minerals which couldn’t fall
through grizzly passes to the Primary
Crusher.
• The rocks of larger size are broken into
smaller piece and then forwarded
through the conveyor.
• These minerals are again passed
through a grizzly and Secondary
Crusher for further reduction in their
size.
• When the rock minerals are broken
into regular sizes,then they are sent to
the screening plant through a number
og conveyors connected to eachother
from top of the hill to the bottom
where the Screening Plant is situated.

27. SCREENING :-
Screening is the practice of taking granulated ore material
and separating it into multiple grades by particle size.
 From NMDC, three different
sizes of ores are transported
and they are as follows :-
LUMP
CLO
FINES
40-150 mm
10-40 mm
0-10 mm

28.  LOADING FOR TRANSPORTATION :-
When the ore minerals are divided
into different grain sizes, they are
brought from screening plant to the
Loading Plant where the minerals are
loaded to the transport
medium(TRUCK or RAILS).
The B.I.O.M. transports its material to
many places VIZAC being at the top.
Other companies which take iron
ores from NMDC are MONET,
SHARDA, KIOCL, BSP, ESSAR etc.
Some ore minerals are also
transported to Japan, China & Korea.