No abstract

Stabilization of a bed of dielectric particles against fluidization by an electric field (≥ 103 volts/cm) is described. Glass bead and silica gel particle beds have been observed to behave as packed beds with flow rates (and pressure drops) of the fluidizing gas up to 15 times the normal incipient fluidization rate. The pressure drop at the breakup of this fixed bed was dependent on the second power of voltage, the particular bed material, and geometry of the system. Under suitable conditions 100% bed expansion without diffusive particle motion or bubble formation was obtained using silica gel particles. Comparison with iron particle bed‐magnetic field effects are presented. Surface polarization charge effects are the simplest explanation of the phenomena. Several of the possible applications are suggested, such as precipitation enhancement in an aerosol filter or as a new tool for investigating aggregative fluidization.

No abstract

Thir report waa prepcued an an aceout of Oovernment spoamred work. Neither the United States. nor the Commiemion. nor any mreon acttag on hehalf of the Comtnimlon: A. Yaken any warranty or representation. expma8Bd or implled, with rerpect to the .rmracy. eompletenesa. or uwhlulness of tke information contained in this report, o r that the use of my tndormrtion. appratue, metbod, or process dlmlored in this report may not infringe privately owned rlgh*. or B. Aurumes any liaMlitlss nftb respect to the w e of, or for damages resulting from the use of any i&rn%atton. a w t u e , m & d. or process diBCle& in this report. A8 ucred in the above. "perran acting on behalf of the Commlr.Lon*' lncludea any employ-or amtractor of the CwamIuian, or employee of ruch contractar, t o the e-t that such employee or contracter of the Cornmiarton, or employee of .uch contractor prepares, d f r~t e s , or providea ac-6