Total exports to China in the first 11 months reached US$44.1bn, up 35% year-on-year.
In recent months investors and mining companies have expressed interest in using the mining treaty, Chile's mining undersecretary Erich Schnake told BNamericas.
The US$2bn Michiquillay copper project, to be put up for bids on December 20, got a boost after the government secured accords with local communities around the property.
The plant in Brazil's Espírito Santo state will reportedly close the year operating at 7.2Mt/y.
CSP shipped its first batch of slabs in July 2016.
The volume of iron ore to be acquired from its mining arm will decline by 1.7Mt/y in the 2018-21 period.