IGO has been granted a patent for a method to recover NiSO4.6H2O crystals from a nickel rich organic phase. The process involves contacting the organic phase with an aqueous strip solution to extract nickel and form a nickel lean organic phase. Additional steps include LTPOX autoclaving of nickel sulphide concentrate. GlobalData’s report on IGO gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on IGO, Solvent extraction processes was a key innovation area identified from patents. IGO's grant share as of May 2024 was 55%. Grant share is based on the ratio of number of grants to total number of patents.
Recovering niso4.6h2o crystals from nickel rich organic phase
A recently granted patent (Publication Number: US11993520B2) outlines a method for recovering NiSO4.6H2O crystals from a nickel-rich organic phase. The process involves contacting the organic phase with an aqueous strip solution containing H2SO4 to extract nickel and Ni2+ to precipitate the desired crystals, resulting in the formation of a nickel-lean organic phase. The strip solution's H2SO4 concentration ranges from 10-300 g/L, ensuring efficient extraction and precipitation. The organic phase includes a coordination complex of nickel and an organic extractant that dissociates in the presence of H+ ions, with the extractant being selected from various compounds like organophosphorous acids, chelating oximes, carboxylic acids, and high molecular weight amines.
Furthermore, the patent details a comprehensive method for producing nickel sulfate, starting from a nickel sulfide concentrate and involving various steps like repulping, fine grinding, low-temperature pressure oxidation, neutralization, decantation, cobalt extraction, and nickel extraction. The process culminates in the direct crystallization of the nickel-rich organic phase by contacting it with a specific aqueous strip solution, resulting in the formation of NiSO4.6H2O crystals. The final nickel sulfate product contains between 21-24% nickel and is in the form of nickel sulfate hexahydrate, meeting specific purity criteria with minimal impurities like Fe, Mn, Cu, Co, and Zn. This patented method offers a systematic approach to efficiently recover nickel sulfate crystals from complex organic phases, ensuring high purity and quality of the final product.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
