Fluorite ore flotation process_Nonmetal

Fluorite ore flotation process

Process introduction

The fluorite ore beneficiation methods are gravity separation and flotation. The fluorite ore beneficiation equipment is also divided into gravity separation equipment and flotation equipment. The gravity separation equipment refers to the jig. Only the jig can handle coarse-grained fluorspar lump ore. , Fluorite flotation equipment is similar to other mineral flotation equipment, including crushers, ball mills, flotation machines, etc.

Application areas

The fluorite ore flotation process can be applied to difficult-to-separate fluorspar ores with complex ore properties such as high mud content in raw ores, symbiosis of impurity minerals and fluorspar, and fine particle size of useful minerals.

Process introduction

Process method

The composition of fluorite ore is complex, and the properties of useful minerals and gangue minerals are similar. It is generally processed by a combination of flotation, gravity separation, and magnetic separation.

Separation of fluorite and barite

Generally, fluorite and barite are mixed and flotated, and then separated. During the mixed flotation, oleic acid is used as a collector to obtain a mixed concentrate. The mixed concentrate can be separated by forward flotation or reverse flotation to obtain a fluorite concentrate.

Separation of fluorite and quartz

Fatty acids are used to capture fluorspar, and water glass is used to suppress quartz. The amount of water glass should be controlled appropriately. A small amount will activate fluorite, but it will not inhibit quartz enough. Excessive amount will inhibit fluorite. Sometimes in order to enhance the inhibitory effect of water glass on quartz, certain polyvalent metal ions are added, which inhibit not only quartz but also calcite.

Separation of fluorite and sulfide ore

For fluorspar containing sulfide ores, xanthate collectors are generally used to float the sulfide ores, and then fatty acid collectors are added to float the fluorspar. A small amount of sulfide mineral inhibitors can also be added to the fluorite flotation operation. To suppress residual sulfide minerals to ensure the quality of fluorspar concentrate.

Production instance

The ore grade of a certain fluorite mine in Hebei is low and the degree of oxidation is high. The particle size of the fluorite can be fine and the hardness is low. The original production process is one refinement and then grinding, and seven times of beneficiation. The concentrate grade is 88%, and the recovery rate is only 75.56%, the mineral processing index is poor, which seriously affects the production index and economic benefits of the enterprise. Therefore, Xingaonai was entrusted with technical transformation. Through fluorite beneficiation experiments, Xingaonai partially improved the flotation process and adjusted the inhibitors. The improved production practice showed that the grade and recovery rate of fluorspar have been significantly improved. , after the transformation, the indicators of the entire fluorite ore flotation process have been significantly improved. It is estimated that the company's annual economic income will increase by 3.2 million yuan, and the annual profit is expected to increase by 1.5 million yuan.