SQM aims to cut water, brine use by 50%

Brine pools and processing areas at SQM’s lithium mine on the Atacama salt flat. Credit: SQM.

Chile’s SQM (NYSE: SQM), the world’s second largest lithium producer, will voluntarily cut its use of fresh water and brine from the Atacama desert to mitigate the overall impact of its operations in one of the driest places in the world.

The company, which produces lithium by pumping brine from beneath the desert and concentrating it through evaporation in pools, has committed to reduce its use of “continental” water by 20% from November this year. The goal, it said, is cutting water use by 50% by 2030.

To achieve those goals, the miner will have to improve production processes and increase the use of sea water. It will require an investment of around US$40 million in the first phase and US$65 million for the second phase.

SQM also vowed to produce carbon-neutral lithium by 2030, as part of a larger, US$100 million emissions reduction drive.

The lithium miner said the plan should not have an impact on it near- or long-term lithium production.

“There is no trade-off between being cost-competitive and being leaders in sustainability,” chief executive Ricardo Ramos said in a statement. “These are commitments that we assume out of conviction and voluntarily.”

SQM is now producing at record levels of 70,000 tonnes for the year, which has allowed it to build higher levels of inventory ahead of an expected demand boom.

The company’s announcement, part of a new sustainable development plan, comes on the heels SQM losing a high-profile legal battle in Chile.

In 2016, Chile’s environmental regulator found that SQM had extracted more brine from the salt flat than permitted. A US$25 million compliance plan presented by the company was dismissed by a court in Antofagasta in December.

Despite the company’s appeal, local regulators forced the company in August to redo its environmental compliance plan for its operations.

Water has become a bone of contention for the expansion plans of both SQM and top competitor Albemarle (NYSE: ALB), both of which operate in the Atacama desert, where more than a third of global lithium carbonate supply is sourced.

Chile, which holds about 52% of the world’s known lithium reserves, lost its top lithium producer crown to Australia in 2018.

The country, however, is working on reversing that situation. It predicts that lithium will soon become its second-largest mining asset, behind copper. The commodity is currently the country’s fourth-biggest export.

SQM’s own expansion plans are on track to be completed by the end of 2021, it said in August.

The company expects to extract more lithium from the same amount of pumped brine by using brine earmarked to produce potash and using higher-grade wells.

SQM estimates that Chile would be able to increase its total lithium production through such methods to 300,000 tonnes of lithium carbonate-equivalent from its current capacity of just over 100,000 tonnes.

— This article first appeared in MINING.com, part of Glacier Resource Innovation Group.


Be the first to comment on "SQM aims to cut water, brine use by 50%"

Leave a comment

Your email address will not be published.


By continuing to browse you agree to our use of cookies. To learn more, click more information

Dear user, please be aware that we use cookies to help users navigate our website content and to help us understand how we can improve the user experience. If you have ideas for how we can improve our services, we’d love to hear from you. Click here to email us. By continuing to browse you agree to our use of cookies. Please see our Privacy & Cookie Usage Policy to learn more.