Following completion of the DFS, the Project is being developed through a Front End Engineering Design (FEED) phase with the first construction elements anticipated in 2017. Production is anticipated 24 months later.
Definitive Feasibility Study
- Q1 SRK engaged to prepare Definitive Mining Study incorporating mine geotechnical, hydrology, hydrology and dewatering, mine optimisation, mine planning, IPCC and scheduling, capex and opex;
- Q1 Ausenco engaged to prepare full definitive Engineering Study including process development, civil geotechnical, mechanical, electrical, slurry pipeline, jetty and shiploader, overall study management, capex and opex.
- Q1 WSP Genivar engaged to prepare IFC compliant Environmental & Social Impact Study;
- Q1 Geophysical surveys (seismic and SRTM?) over mine, plant, logistics and port sites to guide geotechnical, hydrogeological and other civil engineering studies;
- Q2 Geotechnical drilling programmes covering project infrastructure areas at mine, plant site, logistics corridor & port site;
- Q1 Four x 12m shipping containers with 55 tonnes bulk sample by sea freight Pointe Noire to Cape Town;
- Q2 Comminution test work on 57 bulk samples of Hinda ore using full scale production MMD sizers and screening proves efficacy of simple two stage sizing to achieve bi-modal size distribution over a wide range of ore grades;
- Q2 Pilot scale ball milling and screening proves low energy input for milling (4.5kW/t) and prepares representative float feed;
- Q3 Pilot scale float testing operates continuously in equilibrium to produce a 32% P2O5 phosphate rock concentrate.
Advanced Pre-Feasibility Study (APFS)
The Advanced Pre-Feasibility Study, finalised in November 2013 and headed by Tenova Bateman Technologies (Israel) confirmed the world-class characteristics of the Hinda Project, including:
Hinda Deposit one the world’s largest undeveloped phosphate deposits with JORC Compliant Reserves at 433Mt at 10.65% P2O5.
Average ore body thickness of 60m making the Hinda Deposit one of thickest sedimentary deposits globally.
JORC compliant Reserves supporting a 26 year mine life with annualised production of 4Mtpa of 32% P2O5 phosphate rock from 20km of a 100km identified strike-length.
Ability to undertake “strip-mining”, with free digging ore, and conventional screening and flotation to produce market grade 32%P2O5 phosphate rock.
Highly attractive project economics with US$2.01 billion NPV at 8% discount, an ungeared, post tax IRR of 50%, paying back the project capital cost of US$563m in 16 months.
The mine design uses low cost strip mining with in-pit crushing and conveying with a strip ratio of 1:1 during the first 4 years of production. ROM ore is subjected to simple secondary sizing, screening and pre-concentrate milling, upgrading the feed to plant to 19%P2O5. Conventional two-stage flotation produces a market grade 32% P2O5 rock with very low heavy metals and a Minor Element Ratio “MER” within market limits.
The ore will be conveyed to port in a 14” slurry pipeline. At port site, the slurry is dewatered and dried in rotary kiln. A dry storage facility feeds a 3,000 tonne per hour, covered conveyor and ship-loader on a purpose built jetty accommodating vessels up to 60,000 dwt.
The Operating Cost per tonne at US$36.5 FOB Pointe Noire, places the Hinda Project as one of the most attractive phosphate projects globally.