I. Product AdvantagesWanye, leveraging the salt-lake brine resources of Qinghai, has successfully developed a series of high-activity magnesium oxide products specifically designed for hydrometallurgy (cobalt and nickel extraction) in Delingha City, Qinghai.ItemUnitWCN-02WCN-05WCN-06SJK-98MgO content (900°C / 2H)≥%96.096.096.096.0CaO content≤%1.52.02.52.5Fe content≤%0.10.150.150.1Chloride≤%0.50.30.20.4Acid-insoluble matter≤%0.20.21.00.5325-mesh test sieve≥%99999999Bulk densityg/ml0.3–0.60.4–0.60.4–0.60.4–0.6Loss on ignition≤%5.05.05.05.0