Pre Feasibility Study
A pre feasibility and subsequent value engineering
study were completed by ATEC PMC in 2014. The project's
maximum value is realized with the production of 2.0 MTPY of
high grade iron ore concentrates at an average
product grade of 66% Fe.
Mining by conventional open pit methods, drill and blast followed by load and haul would be employed at the mine from two open pits focussing on mineralisation in the southern and northern ore body.
The life of mine (LOM) has been modelled using the Whittle pit shell design method and will be 17 years with an annual product output of 2.0 MTPY of high grade concentrates and an average ROM plant feed of 4.7 MTPY. The total tons mined will be 211 million tons of which 76 million tons will be ROM plant feed.
Ore processing will make use of conventional technologies to upgrade the ROM
ore to a high grade concentrate (66% Fe).
A power supply study completed by Nampower in 2014 shows that the project can tie into the 400 kV Auas (Namibia’s largest power distribution substation) via a conventional 33kV transmission line less than 40 km from the Auas substation. A total of 16.5 MVA will be required.
A feasibility study completed by a leading Australian infrastructure consultant and Namwater in 2015 concludes that enough water is available from Oanab dam via a 110 km pipeline with all infrastructure requirements possible under current conditions.
The deep water port of Walvis Bay can dock vessels with a saltwater draft of up to 14m and vessel length of up to 250m.
The rail network in Namibia supports cape gauge rolling stock with an axle load of 16.5 tons per axle. The total network capacity can support up to 9 million tons of freight per year with a current utilization of only 1.5 million tons.
A leading South African based logistics consultant completed a mine to port feasibility study in 2014. The study yielded several solutions that can be implemented with immediate effect. Fixed and feasible CAPEX and OPEX estimations were supplied to transport up to 2.0 MTPY of high-grade iron ore concentrate from the mine site to the deep-water port of Walvis Bay.
Several rounds of extensive metallurgical testing have been completed by SGS laboratories and SGA in Germany on a pilot scale and representative of the first 10 years of mining. Lodestone can produce exceptionally pure (low Si, Al, Ti and Vd) and high grade concentrates at mass yields over 40% of ROM feed.