Codelco says Ministro Hales roaster still at ‘start-up’ stage

Chilean-based Codelco has confirmed the roasting complex of its Ministro Hales division is still in a “start-up phase”, having not yet reached its full capacity.

Chilean-based Codelco has confirmed the roasting complex of its Ministro Hales division is still in a “start-up phase”, having not yet reached its full capacity.

The roaster, which is key to reducing the high arsenic levels in Ministro Hales concentrates, has experienced technical problems since it started to operate in mid-2014.

“It is still in the start-up stage,” the world’s largest copper producer said, confirming a comment made to Reuters.

Codelco added that it will inform the market once the roaster reaches its full capacity.

Earlier this year, Codelco’s ceo Nelson Pizarro said that the roaster was “going well”, following planned maintenance in November.

http://www.metalbulletin.com/Article/3398304/Search/Codelcos-Ministro-Hales-roaster-will-undergo-planned.html

According to him, it was operating almost 20 hours per day, producing 1,000-1,200 tonnes of calcine.

The company did not say whether the roaster is still operating at that level.

Concentrates from the Ministro Hales division typically have an arsenic content level significantly above 0.5%.

That means they have to be treated at the roasting complex to reduce arsenic levels and make them suitable for processing at Codelco’s Chuquicamata to produce copper cathodes.

Given the issues with the roaster, Codelco has been blending high-arsenic concentrates with clean feeds so it is able to sell the material in China.

There were rumours in the market this week that Chinese smelters have signed a long-term contract with Codelco for blended materials. 

Danielle Assalve 
danielle.assalve@metalbulletin.com
Twitter: @dassalve_mb 

What to read next
US export controls on recycled copper would have unintended consequences that could weaken the country’s domestic recycling and manufacturing ecosystems, the president of the Recycled Materials Association (ReMA) said.
The publication of Fastmarkets’ assessments for nickel 4x4 cathode, nickel briquette and nickel uncut cathode premiums in-whs Rotterdam was delayed on Tuesday July 16 because of a reporter error.
Fastmarkets has corrected its alumina index inferred prices, which were published incorrectly on Tuesday July 15.
The United States' copper recycling industry is ramping up pressure on policymakers to impose some form of export controls on high-purity copper scrap, arguing that current trade dynamics – particularly with China – are distorting prices, weakening domestic capacity and undermining national security goals.
Fastmarkets launched two new price assessments for Indonesia’s domestic trade in nickel ore on Tuesday July 15. The two price assessments are for domestic trades of Indonesian laterite ores with 1.6% and 1.2% nickel content. Indonesia now accounts for 60% of the global nickel supplies and while there is an official government reference price, known […]
US copper scrap market participants are shifting from COMEX to LME pricing in response to extreme price volatility and a new 50% copper import tariff. The change is influencing discount formulas, export strategies and long-term trading dynamics across the sector.