Tasiast XERAS: Equipment & Process Flashcards
6060 Hydraulic Shovel
RH340 Mining Shovel
PC1250 Excavator
What are the loading equipment at Tasiast?
6060 Hydraulic Shovel
HR340 Loader
PC1250 Excavator
793 Haul Truck
785 Haul Truck
List the hauling equipment at Tasiast
793 Haul Truck
785 Haul Truck
SANDVIK DP1500 Drill Rig
Atlas Copco Pit Viper 235 (PV235) Drill Rig
TEREX SKF (SKFX) Drill Rig
SANDVIK DR580 Drill Rig
List the drilling equipment at Tasiast
DP1500
PV235
SKFX
DR580
ROM Pad
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.
Crusher
A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Tasiast has a Cone Crusher.
SAG Mill
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.
Ball Mill
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.
CIL
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.
Heap Leach
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.
Auxiliary - D8 Dozer
Auxiliary - D9 Dozer
Auxiliary - D10 Dozer
Auxiliary - CAT 854
Auxiliary - CAT 950
Auxiliary - CAT 24M
