Study on Clarification Behavior of Fe₂O₃/Kerosene Sludge under Strong Coupling of Ultrasonic Stationary Field

Abstract:

Two cofrequency ultrasonic fields were coupled directly by ultrasonic stationary coupling system to clarify Fe₂O₃/kerosene sludge medium and achieve the separation of Fe₂O₃/kerosene. Experimental results show that when sound intensity is close to 80% of the cavitation threshold value, stable stationary field can be formed in the sludge medium after the superposition of primary wave and secondary wave in the ultrasonic field. The acoustic radiation force drives Fe₂O₃ phase to cluster toward the wave node, the Fe₂O₃ phase above wave amplitude position floats by overcoming the gravity, and the Fe₂O₃ phase below wave amplitude position subsides so that the suspension effect occurs in the kerosene phase and the clarification and separation of sludge is achieved. When sound intensity is less than 30% of the cavitation threshold value, the suspension effect of ultrasonic field on kerosene phase disappears. In this case, kerosene phase floats on the surface of sludge medium but the separation of Fe₂O₃/kerosene cannot be realized.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 841-847
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.841
• Online since: May 2011
• Authors: Ying Long Li, Fu Rong Cao, Dian Kun Lu
• Keywords: Clarification, Fe₂O₃/kerosene Sludge, Separation, Ultrasonic Stationary Field

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