* Q1 EPS $0.13 vs $0.06
* Q1 rev doubles
May 12 (Reuters) - Silver Wheaton Corp's SLW.TO first-quarter profit nearly tripled, helped by a 45 percent increase in average realized silver prices.
Silver Wheaton, which buys silver byproduct from other miners and resells it, posted net earnings of $44.6 million, or 13 cents a share, compared with $15.1 million, or 6 cents a share last year.
Sales more than doubled to $85.9 million.
Operating cash flow increased to $57.6 million, compared to $23.1 million.
Silver Wheaton kept its 2010 forecast for attributable silver equivalent production at 23.5 million ounces.
Shares of the company closed C$21.36 Wednesday on the Toronto Stock Exchange. (Reporting by Aftab Ahmed in Bangalore; Editing by Aradhana Aravindan) (firstname.lastname@example.org; within U.S. +1 646 223 8780; outside U.S. +91 80 4135 5800; Reuters Messaging: email@example.com))