What question did this study set out to answer?

To develop an environmentally friendly process for extracting nickel from low-grade ultramafic ores.

Unlocking the Nickel Value of Ultramafic Resources Through Innovative Thermal Treatment Process

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Randomized trial shows effective nickel recovery from low-grade ultramafic ores, suggesting a sustainable extraction method.

To develop an environmentally friendly process for extracting nickel from low-grade ultramafic ores.
Low-temperature solid-state extraction process implemented at mini-plant scale.
Utilized metallic iron as a nickel getter to enhance recovery efficiency.
Optimized processing parameters such as temperature and atmosphere for favorable thermodynamic conditions.
Achieved ~89% nickel recovery from a 7.7 wt.% Ni sulfide concentrate.
Produced ferronickel alloys containing ~16 wt.% Ni with rapid processing time (~3 hours).
Eliminated SO2 emissions during the extraction process.

Lv et al. (2026) studied this question.

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