铜钴矿湿法沉钴：氧化镁为主流沉钴中和剂 刚果(金)铜钴矿多以湿法沉钴工艺进行冶炼，目前针对铜钴矿石，主要通过"还原浸出—除杂—氧化镁 沉钴"和"除铁—沉铜—两段式沉钴"工艺沉淀钴并去除溶液中的铁、铜杂质，中和沉淀产出粗制氢氧化 钴是湿法钴回收的关键环节，需兼顾产品中钴的品位、杂质含量以及整体钴的回收率。活性氧化镁因其 碱性温和，具有沉淀效率高、环境友好等特点，在粗氢氧化钴产品的制备中具有明显优势，目前在刚果 (金)钴回收工艺中，多采用其作为中和剂。湿法冶金用氧化镁在湿法钴提取中能有效促进溶解、选择性 萃取，改善溶液环境，优化沉淀和分离，提高萃取率和纯度，其工艺能耗低，环境效益显著。 红土镍矿湿法沉镍钴：国内企业首次尝试，替代空间广阔 目前广泛应用的氢氧化钠转碱转晶种沉淀工艺与氧化镁沉淀工艺产品及项目指标接近，但此前受制于国 内高活性氧化镁供应不足以及专利限制，氧化镁沉淀路径未得到大范围应用。随着必和必拓氧化镁沉淀 技术专利(授权号US6409979B1)到期以及国内高活性氧化镁生产瓶颈打破，印尼环保趋严影响以及成本 压力下，氧化镁沉淀工艺与氢氧化钠转碱沉淀工艺的优劣势及市场争夺逐渐出现，湿法HPAL冶炼红土 ...

Group 1 - The core viewpoint of the article highlights the significant stock price increase of Liqin Resources (2245.HK), which surged over 17% to reach a historical high of 17.95 HKD, with a trading volume of 320 million HKD [1] - The Democratic Republic of Congo (DRC), the world's largest cobalt supplier, announced the lifting of its cobalt export ban on October 16, implementing annual export quotas, allowing up to 18,125 tons of cobalt for the remainder of 2025, and annual limits of 96,600 tons for 2026 and 2027 [1] - Analysts indicate that nickel prices are at a cyclical low with clear cost support, and the DRC's export quota system may lead to a supply contraction, which is likely to push cobalt prices higher [1] Group 2 - Liqin Resources benefits from rising cobalt prices as its nickel production capacity is located in Indonesia, unaffected by the DRC's export restrictions, thus enhancing the company's growth potential [1] - The company is expected to see significant growth due to the release of new production capacity and its cost advantages [1]