In draft proposals, the government said it would introduce extra levies on CO2 emissions for different sectors to push companies to clean up their acts.
Away from the seminars and cocktail parties, metal producers, traders and users will meet behind closed doors to hammer out details of next year's contracts.
The Chilean miner has been seeking a buyer for all or part of itself to raise $1 billion to dig for copper and gold in two of its mines in the country's north.
The country's antitrust court has approved a deal between the competition regulator and Tianqi, allowing the Chinese miner to buy a nearly one-quarter stake in lithium producer SQM .