Comprehensively analyze the ore’s properties, combine the dressing plant’s actual situation and the investment budget to customize a scientific flotation process, and follow a reasonable flotation reagent system to obtain ideal economic benefits and mineral processing indicators.

1. Suitable grinding fineness

The appropriate grinding fineness must be selected based on the embedded particle size of the effective minerals so that the effective minerals and gangue are usually dissociated and the concatenation of fluorite ore and gangue minerals is minimized. It is necessary to avoid over-grinding of the material in the fluorite flotation process if the ore grinding fineness is too fine.

2. Properly increase the slurry temperature

Appropriately increasing the slurry temperature can also improve fluorspar flotation indicators.

When the temperature is higher, the solubility of the carboxylic acid collector in the slurry increases, it is easier to disperse, the ability to collect fluorite ore is also stronger, and the recovery rate of fluorite ore is higher.

However, the fluorite ore is not completely dissociated. In that case, part of the gangue minerals will be selected together with the fluorite ore, resulting in a lower quality of the fluorite ore.

When the temperature is low, the collection ability of carboxylic acid collectors is weak, but some fluorspar ores with good floatability will still be sorted out. The quality of fluorspar ore is high, but the recovery rate is low. Low.

3. Inhibitor dosage

Inhibitors mainly use water glass, followed by sodium metaphosphate, tannic acid, baking gum, starch, dextrin, lignosulfonate, etc. Water glass is a commonly used inhibitor in fluorite flotation and mineral processing.

To improve the selective inhibition ability of water glass, water glass can be formulated with soluble salts to form a combined inhibitor, or it can be formulated with sulfuric acid in a particular proportion to create acidic water glass.

4. Maintain appropriate slurry liquid level

In the process of fluorspar flotation and beneficiation, fluorspar minerals with better floatability will preferentially reach the top layer of the foam layer. When the slurry liquid level is low, the fluorspar concentrate has a high grade, but its recovery rate is low; when the slurry liquid level is high, the fluorspar concentrate recovery rate is high, but its ore grade is low.

5. Slurry pH value

When oleic acid is used as the collector and the pH value is 8-11, the floatability is good and the fluorite ore recovery rate can reach 80%-90%.

6. Pre-soften water

When the water quality is complex, the water for flotation fluorite must be pre-softened before entering the flotation separation stage, such as adding sodium carbonate for softening.

7. Optimize the flotation process

When the medium ore returns sequentially, part of the gangue ore will continue circulating in the fluorspar flotation system. It cannot be discarded, thus affecting the ore flotation indicators.