Selective Flotation Depressant
Ozone oxidation creates a porous structure and introduces carbonyl/carboxyl groups that preferentially adsorb onto calcite, enabling selective flotation separation of scheelite from calcite.
Yao, Wei · Kun, Xia · Yue, Wu · Jiaying, Li · Yingying, Fu · Zhang, Ming · Wang, Daowei
Journal of Industrial and Engineering Chemistry 2026
At pulp pH 6.7, oxidized dextrin strongly depresses calcite flotation without impairing scheelite recovery
Adsorption of oxidized dextrin on calcite is significantly higher than on scheelite
Carbonyl and carboxyl groups of oxidized dextrin bind to calcium sites on calcite, hindering sodium oleate adsorption