The Canadian Mining Journal is Canada’s first mining publication.
While it was rigorously testing a customized use of hydrometallurgical technology to assure commercial viability for its mammoth nickel-mining project, Vale Canada Ltd. was also testing a comprehensive effluent treatment program that incorporates new high-rate softening and clarification technology to help protect the environment.
International mining company, Vale, is nearing completion of its US$3.7-billion nickel processing plant at Long Harbour, on Newfoundland’s Placentia Bay. The Brazilian mining company’s wholly owned subsidiary, Vale Canada Limited, formerly known as Vale Inco, is directing the construction of the processing plant, which began in April 2009.
Start-up of the plant is scheduled for August 2013. Once fully operational, it is expected to annually produce 50,000 metric tons of nickel, 4,700 metric tons of copper, and 2,500 metric tons of cobalt.
The mined ore will first undergo a concentrating process at the Voisey’s Bay mine site in Labrador before it is transported by ship to the processing plant at Long Harbour. By processing ore concentrate at the plant, Vale anticipates achieving higher metal recoveries while also eliminating the time and expense of shipping to Ontario or Manitoba for refining.