Tasiast XERAS: Equipment & Process

Question 1

Answer 1

6060 Hydraulic Shovel

Question 2

Answer 2

RH340 Mining Shovel

Question 3

Answer 3

PC1250 Excavator

Question 4

What are the loading equipment at Tasiast?

Answer 4

6060 Hydraulic Shovel

HR340 Loader

PC1250 Excavator

Question 5

Answer 5

793 Haul Truck

Question 6

Answer 6

785 Haul Truck

Question 7

List the hauling equipment at Tasiast

Answer 7

793 Haul Truck

785 Haul Truck

Question 8

Answer 8

SANDVIK DP1500 Drill Rig

Question 9

Answer 9

Atlas Copco Pit Viper 235 (PV235) Drill Rig

Question 10

Answer 10

TEREX SKF (SKFX) Drill Rig

Question 11

Answer 11

SANDVIK DR580 Drill Rig

Question 12

List the drilling equipment at Tasiast

Answer 12

DP1500

PV235

SKFX

DR580

Question 13

ROM Pad

Answer 13

After mining from nearby open pits, ore is delivered to the run of mine (ROM) pad, where it is sorted according to grade and blended to ensure consistent feed to the feed preparation circuit.

Question 14

Crusher

Answer 14

A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Tasiast has a Cone Crusher.

Question 15

SAG Mill

Answer 15

SAG is an acronym for Semi-Autogenous Grinding. SAG mills are autogenous mills but use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder.

Question 16

Ball Mill

Answer 16

A typical type of fine grinder is the ball mill. A slightly inclined or horizontal rotating cylinder is partially filled with balls, usually stone or metal, which grind material to the necessary fineness by friction and impact with the tumbling balls.

Question 17

CIL

Answer 17

Cyanide is a lixiviant, or reagent that is used to leach, often in tanks, gold from a solid matrix and form a gold syanide complex. The gold cyanide complex is then extracted from the pup or slurry by absorption onto activated carbon. CIL stands for carbon-in-leach. This is a gold extraction process called cyanidation where carbon is added to leach tanks (or reaction vessel) so that leaching and absorption take place in the same tanks. CIL is slightly different from another gold extraction process called CIP or carbon-in-pulp process. In the latter case leaching takes place in tanks dedicated for leaching followed by absorption onto carbon in tanks dedicated for absorbtion.

Question 18

Heap Leach

Answer 18

Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials. Similar to in situ mining, heap leach mining differs in that it places ore on a liner, then adds the chemicals via drip systems to the ore, whereas in situ mining lacks these liners and pulls pregnant solution up to obtain the minerals. Most mining companies favor the economic feasibility of heap leaching, considering that heap leaching is a better alternative to conventional processing methods such as such as flotation, agitation, and vat leaching.

The crushed ore is irrigated with a dilute alkaline cyanide solution. The solution containing the dissolved precious metals in a pregnant solution continues percolating through the crushed ore until it reaches the liner at the bottom of the heap where it drains into a storage (pregnant solution) pond. After separating the precious metals from the pregnant solution, the dilute cyanide solution (now called “barren solution”) is normally re-used in the heap-leach-process or occasionally sent to an industrial water treatment facility where the residual cyanide is treated and residual metals are removed. In very high rainfall areas, such as the tropics, in some cases there is surplus water that is then discharged to the environment, after treatment, posing possible water pollution if treatment is not properly carried out.

Question 19

Answer 19

Auxiliary - D8 Dozer

Question 20

Answer 20

Auxiliary - D9 Dozer

Question 21

Answer 21

Auxiliary - D10 Dozer

Question 22

Answer 22

Auxiliary - CAT 854

Question 23

Answer 23

Auxiliary - CAT 950

Question 24

Answer 24

Auxiliary - CAT 24M

Question 25

Answer 25

Auxiliary - CAT 994

Question 26

Answer 26

Auxiliary - CAT 16M

Question 27

Answer 27

Auxiliary - CAT 988

Question 28

Answer 28

Auxiliary - Komatsu PC350