T/JXNFS 003-2024 Red soil nickel ore metallurgical neutralization residue scandium extraction process technical specifications

Scope

Main technical content: The scandium content in laterite nickel ore ranges from 50 g/t to 600 g/t, and is considered the most promising scandium resource in the future. During the wet metallurgical process of laterite nickel ore, scandium is recovered and utilized as a by-product. However, the economic value and application prospects of scandium metal itself have been overlooked, with a total recovery rate of approximately 45%. This has failed to achieve efficient extraction and high-value preparation of scandium from laterite nickel ore. This standard can provide necessary technical support for laterite nickel ore smelting enterprises, guiding them to standardize the extraction of scandium from metallurgical slag of laterite nickel ore. The optimized leaching-extraction-precipitation-calcination process is used to produce scandium oxide from the leaching solution and iron-aluminum slag generated by laterite nickel ore smelting enterprises, which can realize the resource recycling of by-products. The research focuses on the behavior of impurities in nickel-cobalt smelting slag and the mechanism of efficient scandium dissolution and separation. By optimizing the extraction agent and strengthening the extraction process, efficient separation and enrichment of scandium can be achieved.

Development Information

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