Hydrodynamic cavitation enhanced cyanamide waste residue flotation separation method

• Main Authors: ZHANG ZHILIANG, GU HAIBAO, LI YANG, XIE HAO, JI JIANBING, SHI GUANGWEI
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2021
• Subjects: DIFFERENTIAL SEDIMENTATION; FLOTATION; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; PERFORMING OPERATIONS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING

The invention discloses a hydrodynamic cavitation enhanced cyanamide waste residue flotation separation method which comprises the following specific steps: firstly, mixing cyanamide waste residues with water, and performing blending to obtain slurry; adding a collecting agent and a surfactant into the slurry; feeding slurry into a cavitation element at a certain flow through a pump, keeping a certain cavitation pressure, and keeping a certain system temperature in the cavitation process to obtain primary cavitation slurry; continuously introducing the primary cavitation slurry into the cavitation element, and repeating the cavitation operation for a plurality of times to obtain circularly cavitated slurry; and finally, collecting the slurry obtained after circulating cavitation, and carrying out flotation after the slurry is stirred to be uniform. The hydrodynamic cavitation enhanced cyanamide waste residue flotation separation method provided by the invention is simple in process, simple in reagent system,