Modern Mining November 2017

COPPER

The DMS product will be in dry form (5 % moisture) as a gravel with an average sizing of approximately 12 mm. The spirals product will also be in a dry form (10-15 % moisture) as a sand with an average sizing of approximately 0,10-0,85 mm. The products will be assayed prior to loading into 1,5-t bags. The bags will be direct loading onto 40-ft semi-trailers for trucking. Approximately 5 100 truck trips per year, or 14 truck trips per day, will be required to deliver the products to customers. According to Nzuri, the process flowsheet incorporates tried and proven technology and includes equipment from reputable suppliers. The decoupling of the crushing circuit from the DMS plants will result in higher overall plant

 scrubber and secondary crushing with a cone crusher in closed circuit with a screen to produce feed for the DMS circuit;  dense media separation via two single-stage modules to produce a rejects stream and concentrate product;  de-sliming of scrubber wet screen undersize to produce a mineralised ‘sands’ product that is further treated via a spirals circuit to produce a spirals concentrate product;  DMS mineralised coarse reject stream con- veyed and stacked in a waste storage area;  DMS and spiral concentrate product bagging station; and  tailings thickening prior to pumping to the tailings storage facility (TSF).

Newly installed perimeter fencing at Kalongwe.

New accommodation buildings have recently been erected as part of an early capital works programme.

availability, as well as pro- viding operational flexibility regarding the crushing circuit. The site is relatively remote and will require an access road to bring in equipment and personnel and to trans- port concentrate to customers. Existing unsealed roads built by Ivanhoe Mines to access its Kamoa and Kakula depos- its will be utilised to reach a point within 31 km (by road) from the project site, after which a new ‘main access road’ will be built. A power supply study has been carried out by ECG Engineering based on the plant and accommodation

24  MODERN MINING  November 2017