OZ Minerals says a dozen parties are looking at buying the company's key growth asset, the Carrapateena copper project in South Australia.
Chief executive Terry Burgess says interest in the sale has grown since he announced in February that the company is talking to global copper producers.
"All options are on the table," Mr Burgess told reporters on Tuesday.
"I'd like to see us retain a holding in Carrapateena but it's going to be what is best for the shareholders."
He confirmed that OZ Minerals, which recorded an annual loss of $294 million in 2013, could end up with no stake in the project if a sale goes ahead.
Australia's third largest copper producer has taken interested groups on site visits, delivered presentations and opened up data files on Carrapateena, which is still in a pre-feasibility phase.
"We've probably got a dozen people altogether from almost every continent in the world," Mr Burgess said.
Potential bidders were looking for quality copper resources in countries where the sovereign risks were low and good infrastructure was in place, he said.
"We're not up in the Andes, we've got water, we've got electricity," he added.
Mr Burgess has previously said the sale of a major asset could make the company a takeover target, but he believes the future level of copper production at the company's Prominent Hill asset is probably not great enough to attract a large producer.
Mr Burgess was also unable to shed light on progress for his replacement.
"This is not a process that I'm intimately involved in," he said.
The company is also yet to receive a claim in relation to a class action by almost 40,000 shareholders seeking more than $250 million.
Shareholders allege OZ Minerals failed to disclose to the market its true debt position during a merger between Zinifex and Oxiana.
On Tuesday OZ Minerals said copper production in the first quarter of 2014 was in line with the previous quarter, while gold production fell.
Shares in the company were up nine cents, or 2.4 per cent, at $3.84 at 1437 AEST.
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