Feb 22 (Reuters) – Australian miner OZ Minerals Ltd reported a doubling of annual net profit on Thursday, helped by a recovery in copper prices. Higher copper prices since May helped net profit for 2017 rise to A$231.1 million ($180.49 million) from A$107.8 million a year ago, ahead of analysts’ expectations of A$209.6 million, according to Thomson Reuters I/B/E/S. The firm, which also mines gold and silver, declared a final dividend of 14 Australian cents per share, matching the payout a year ago. ($1 = 1.2804 Australian dollars)