Clean TeQ Archives - International Mining

With the nickel price having recovered from the late March lows and now trading above the $15,000/t mark on the LME, those miners and developers tied to the base metal have been making moves in the last few months. Alan Taylor at ALTA 2020 Online recently highlighted some of the more significant news in the nickel-cobalt laterite sector.

It comes just two months prior to the start of the virtual conference.

Ravensthorpe restarts

Often viewed as an industry bellwether, the First Quantum-owned Ravensthorpe nickel mine (pictured) in Western Australia is continuing with a restart plan despite coronavirus challenges, the company recently reported.

The acid plant and atmospheric leaching operations restarted in March 2020, with the first high pressure acid leach (HPAL) circuit brought on stream in mid-April, followed by product drying and containerising of nickel mixed hydroxide product.

The second HPAL circuit is scheduled to come online in due course.

Director of Exploration, Mike Christie, said previously at Paydirt’s Africa Downunder conference in September 2019 that the mine plans to ramp-up production to between 20,000-30,000 t/y of nickel over the next few years.

Some 1,979 t of nickel was produced at the operation in the June quarter.

Ramu expansion engineering ready

Looking back to an ASX announcement on October 8, 2018, from Highland Pacific, a minority partner in the Ramu Nickel JV, a A$1.5 billion ($1.1 billion) expansion continues to be investigated.

Ramu is currently rated at 34,000 t/y nickel and 3,300 t/y cobalt as mixed hydroxide precipitate (MHP), achieved in 2017.

By way of an update, Craig Lennon, Executive Director of Highlands Pacific (now a wholly-owned subsidiary of Conic Metals Corp), advised Taylor that the expansion project is engineering-ready, although the final decision to proceed is dependent on factors including global markets and final permitting decisions in Papua New Guinea.

Indonesia projects slowed

There are several HPAL projects in Indonesia aimed at producing MHP for the electric vehicle battery industry. They received environmental approvals in January 2020, allowing them to proceed with construction, according to Jack Anderson of Roskill, however, their development depends on Chinese expertise and progress is likely to be slowed due to Chinese workers involved in the construction being quarantined.

Sunrise PEP progressing towards Q3 2020 completion

Fluor Australia Pty, as Project Management Contractor, is working with the Clean TeQ-owned Sunrise nickel/cobalt/scandium project team to develop a comprehensive Project Execution Plan (PEP) for the Sunrise project in New South Wales, Australia, according to reports.

The company expects that completion and announcement of the outcomes will be late in the September quarter.

Clean TeQ advises that the PEP capital estimate will likely be higher than the 2018 definitive feasibility study figure, while the operating costs indicate the project will remain extremely competitive because of strong cobalt by-product credits.

Queensland offers funding for Sconi

The Queensland government has offered Australian Mines a conditional financial support package for the development of the Sconi cobalt-nickel-scandium project in north Queensland, the mine developer says.

The package will be subject to a number of conditions including a timetable for securing an offtake agreement for all of the nickel sulphate and cobalt sulphate production (September 2020); delivery of a detailed execution plan, obtaining approved financing for construction and making a final investment decision; appointing an engineering, procurement, construction management contractor (end 2020); and completion of construction (July 2023).

It also includes conditions for employment of people and engagement of independent contractors working directly on the project.

Australian Mines, in August, became the first mineral resources company to be certified a “Carbon Neutral Organisation” under the Australian Government’s Climate Active program.

Piauí project granted preliminary environmental licence

Brazilian Nickel plc announced the granting of a Preliminary Environmental Licence by the Brazilian Piauí State Environmental Agency on October 22, 2019, for the mining and heap leaching processing plant to produce nickel and cobalt products for the battery industry at its Piauí nickel project.

The company says it is now ready to advance through a bankable feasibility study (BFS) enable financing and application for a construction permit.

An operating demonstration plant has leached 8,000 t of ore in full-height heaps and has achieved first sales of nickel and cobalt products. This will allow the company to expand the existing demonstration plant by a factor of 10 to 1,400 t/y nickel to jump-start the project to immediate producer status without the need for a BFS.

Process innovations

On the process innovation front, there have recently been two major stories from Pure Minerals and Metso Outotec.

Pure Minerals has secured a A$2.55 million grant via its wholly owned subsidiary Queensland Pacific Metals Pty Ltd (QPM) for the Townsville Energy Chemicals Hub (TECH) project. QPM and project partners Direct Nickel Projects Pty Ltd (DNi) and the Commonwealth Scientific and Industrial Research Organisation (CSIRO) successfully applied for the Federal Government grant.

The TECH project will process imported, high-grade nickel-cobalt laterite ore from New Caledonia to produce nickel sulphate, cobalt sulphate and other valuable co-products. If it proceeds it will be the first commercial application of the DNi Process™.

The next step is a pilot plant test work program on a bulk sample received from New Caledonia ore supply partners.

And, finally, Metso Outotec has introduced a new novel superheated steam sulphation process.

The process is a recent development of Metso Outotec, Finland, and has been successfully tested on a laboratory scale. It includes agglomeration of ground laterite with sulphuric acid, then superheated steam treatment at elevated temperature followed by water leaching. Nickel and cobalt are sulphated and solubilised. Iron dissolution is minimised by conversion from goethite to hematite. Sulphuric acid consumption is said to be moderate.

A paper on the process is to be presented by Metso Outotec in the ‘Nickel-Cobalt-Copper Conference’ at ALTA 2020 Online.

Pressure Acid Leaching for the production of nickel and cobalt for the battery industry is one of the key topics of the ‘Nickel-Cobalt-Copper Conference’ to be held on November 10-12 as part of ALTA 2020 Online.

This will be followed on November 13 by a short course ‘The ART of HPAL – The way of Success’. The course presenters played key roles as owner and engineering contractor in Sumitomo’s successful Coral Bay and Taganito HPAL projects in the Philippines.

International Mining is a media partner of ALTA 2020 Online

Clean TeQ Holdings Limited has formally handed over a Continuous Ion Exchange Desalination (DESALX®) plant to Kirkland Lake Gold’s Fosterville gold mine in Victoria, Australia.

Clean TeQ says it was engaged to design, supply and commission a two million litre-per-day Clean TeQ DESALX mine water treatment plant, with the plant designed to deliver a sustainable water management solution by treating mine process water.

The plant construction was completed in late 2019, with commissioning and operations commencing in early 2020. Now, Clean TeQ has confirmed the plant has passed the performance tests specified in the engineering, procurement and construction contract and the customer has issued a formal notice of acceptance and completion, it said.

Sam Riggall, Clean TeQ CEO, said: “After successfully demonstrating the world’s first ever commercial scale CIF plant in Oman late last year, this is yet another moment of great significance for Clean TeQ.

“Confirmation of the successful deployment of our innovative DESALX solution for this application, designed and delivered by Clean TeQ, is strong validation of our proprietary continuous ion exchange technology, and provides us with a firm foothold in the mining waste water treatment market from which we can continue to grow the business.”

The DESALX technology consists of two continuous ionic filtration (CIF®) modules in series removing divalent cations and anions present in the water through complementary processes. The modules contain ion exchange resins that are cycled between columns using air lifts, allowing for continuous operation and regeneration of the system. This system increases impurity removal efficiency, reduces chemical use, and provides protection against fouling, according to Clean TeQ.

The DESALX solution is well suited to purification of difficult to treat waste waters with high hardness, sulphate, and heavy metals as well as suspended solids which can foul reverse osmosis membranes. These types of waste waters are common in the mining industry, including acid mine drainage water, the company explained.

At Fosterville, the equipment provided by Clean TeQ includes a precipitation package to remove antimony and arsenic. The effluent from the clarifiers is treated by the DESALX plant to remove sulphate, calcium and magnesium with gypsum as the only by-product. The DESALX effluent is then further treated by reverse osmosis to produce water for re-use.

“The Clean TeQ system is a key enabling component of the customer’s overall water management strategy which includes a medium-term target of creating a true ‘zero liquid discharge’ solution that does not produce any saline brine and includes aquifer reinjection,” Clean TeQ said.

Clean TeQ Water is now focused on completing one additional key project at a copper-cobalt mine in the Democratic Republic of the Congo, and a number of pilot programs in China.

“This Clean TeQ system, as well as the plants recently completed in Oman and Australia, are the first of their type anywhere in the world and have been deployed as part of three different technical solutions,” the company said. “The successful delivery and commissioning of these plants provides strong demonstration of the efficacy of Clean TeQ’s suite of proprietary ion exchange technologies and their versatility for metal extraction and wastewater treatment. As commercial scale plants, the facilities provide a valuable platform from which to now rapidly grow Clean TeQ Water.”

Base metal price rise sparks nickel-cobalt laterite activity