Hycroft Mining Holding‘s patented system involves an oxidation step using carbonate sources to recover 60-90% of metals from sulfide and transition ores before cyanide leaching. The process includes crushing, storage, oxidation, heap leaching, and metal recovery segments. This innovative method aims to enhance metal recovery efficiency. GlobalData’s report on Hycroft Mining Holding 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 Hycroft Mining Holding, was a key innovation area identified from patents. Hycroft Mining Holding's grant share as of May 2024 was 12%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for system to recover metals from ores
A newly granted patent (Publication Number: US11993826B2) discloses a system designed for the processing and recovery of metals from ores containing 70% or less cyanide-soluble metal. The system comprises various segments, including a crushing segment with ore and sulfide, a storage segment with oxidizer and pH buffer material, an oxidizing pH moderating material handling and distribution segment, a heap leach segment, and a metal recovery segment. The system is configured to oxidize sulfides in the ore, creating pre-oxidized ore that is then subjected to a leaching process to extract the metal, followed by metal recovery.
Furthermore, the patent includes specific claims related to the location of the system at a surface mine, the composition of the ore (sulfide or transition ore), moisture content, density, particle size, and the use of specific materials like trona or soda ash as oxidizer and pH buffer. The system also involves a holding pile for pre-oxidized ore, with ongoing oxidation reactions, and a metal recovery segment that can be a Merrill-Crowe plant or a zinc cementation system. Additionally, the patent details the pH levels and total alkalinity of the pre-oxidized ore, emphasizing the controlled conditions required for efficient metal recovery from the ores.
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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.
