Sembehun Project Feasibility and Market Dynamics
Appendix B: A conventional mining and processing operation
The Area 1 operations and proposed Sembehun flowsheet presents a low risk, well understood mining operation.
Conventional Mining & Processing
Sierra Rutile Limited
Ore from mine
Wet Concentrator Plants
•
Truck and excavator operation with dozer
support¹
•
Ore is further screened at the WCPS
•
•
In-pit mineral sizers prepare the ore for ex-
pit scrubbers by screening out oversize
material and then pumping feed to WCPs
Scrubbers, screens, density tanks and
processing plants produce heavy mineral
concentrate (HMC)
•
•
Heavy Mineral Concentrate
HMC is passively dewatered and stockpiled
for transportation to the MSP for further
processing
Sand tailings and slimes tailings are disposed
and water returned to process
Mineral Separation Plant
The MSP includes the Feed Preparation Plant (FPP) and
the Dry Plant
Trucks transport HMC to the FPP where gravity methods
screen, scrub, de-slime and separate feed
•
The resultant rutile-rich HMC goes to the Dry Plant for
drying, sizing and magnetic and electrostatic separation
.
Final Product
The final rutile product contains at least
95% titanium dioxide.
The products are stored in separate
stockpiles for transport to Nitti Port, where
they are then exported to Sierra Rutile's
global customer base
The Sembehun project will follow Sierra Rutile's well understood, low risk conventional mining and processing approaches.
Significant existing infrastructure that is currently utilised for the mining and processing of Area 1 deposits, will be leveraged for future operations at Sembehun, including the MSP, Nitti
Port, accommodation an other supporting infrastructure.
Learnings from Area 1 have been used to inform incremental process enhancements and modifications to the Sembehun flowsheet.²
Note: (1) Both mobile mining units will be truck and excavator operations by the end of 2022, feeding ore to mineral sizers and scrubbers in fixed positions. (2) Please see Section 3.12.9 of the Demerger Booklet for more information.
31View entire presentation