The M3-3 experiment was a test of the M3 cell coupled to a crystallizer and hydrocyclone for separation of coarse solids before return of electrolyte to the cell. It was essentially a repeat of the M3-2 experiment, but with increased emphasis to understand the sources of experimental error and the evolution of the particle size distributions during the course of the experiment. A new hydrocyclone, scaled to operation with 1 to 5 cells, was tested in conjunction with peristaltic pumps. The test ran at 14 A for 101 min, followed by 122 A for 269 min at 60 C. The main operational problem was failure of the rubber tubing in the peristaltic pump feeding the hydrocyclone. Primary results include reasonable agreement in the material balances and with the calculated crystallization rates, the 50% cut point of the new hydrocyclone at about 8 (MU)m, and the aluminate concentration decreased from 2.4 M to 1.4 M in 21 h at 30 C in a subsequent batch crystallization experiment. The particle size distributions do not change significantly on aging de-ionized water.
NASA STI/Recon Technical Report N
- Pub Date:
- March 1985
- Mass Distribution;
- Material Balance;
- Particle Size Distribution;
- Electronics and Electrical Engineering