1) Add directly to the powdered solid (such as lime, soda).
2) Adjust into a milky suspension.
3) was added directly to the original liquid (such as pine oil, cresol, black powder, oil, coal).
4) Add 5-10% aqueous solution. Most water-soluble agents are added as such (e.g. xanthate, sodium silicate, copper sulfate, etc.).
5) Dissolve some water-insoluble agents in the solution (such as oleic acid dissolved in kerosene and white drug dissolved in o-toluidine).
6) Emulsifying the poorly soluble agent by mechanical stirring or ultrasonic method (such as oleic acid, kerosene, pine oil, etc.), and then adding the milky agent to the flotation process.
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