| 00:00:00 | The Tromp curve in the MMM industries |
| 00:02:13 | Abstract |
| 00:02:38 | Often it is better to be second than first |
| 00:03:23 | H W Newton, W H Newton “A Study of Classification Calculations”, Rock Products, 35(16), 26-30 (1932) |
| 00:03:52 | “Het Patent Tromp” Paul Geilenkirchen |
| 00:04:45 | Lessing Medal |
| 00:05:38 | An aside - The US Jackson Pollock stamp….[Hear also David Hughes “Nobody Smokes in America” This Other Eden (1999)] |
| 00:06:12 | OK back to….. Klaas Frederik Tromp |
| 00:06:33 | KerkradeHe had successfully applied for a job at the Domaniale Mine |
| 00:07:01 | Coal Washing |
| 00:07:50 | Over 60 patents to his name |
| 00:08:09 | Coal washing |
| 00:08:34 | US Patent 2139047 |
| 00:09:25 | Coal Washing |
| 00:10:02 | Coal washing |
| 00:10:21 | The original paper |
| 00:10:58 | Citation |
| 00:12:07 | Separation/classification/partition |
| 00:13:34 | Applications areas |
| 00:14:38 | Computation |
| 00:16:58 | Calculation Routes |
| 00:19:06 | Basis of the calculation |
| 00:20:26 | Separation/total fines efficiency |
| 00:21:25 | Mass fractions |
| 00:22:34 | Circulation ratio and circulating load |
| 00:23:40 | Circulation ratio and circulating load |
| 00:25:22 | Unit operations – milling processes |
| 00:25:27 | Unit operations – milling circuits |
| 00:26:19 | Cement |
| 00:27:32 | Cumulative and frequency plots |
| 00:28:51 | The Tromp curve calculation |
| 00:29:26 | 2 ways of doing this |
| 00:29:45 | One example only! |
| 00:30:41 | It is convenient to designate 3 constants |
| 00:31:33 | The particle size distributions |
| 00:32:22 | We can then calculate 2 new values (A & B) and from these the Tromp and corrected Tromp values |
| 00:34:23 | The full spread-sheeted calculation |
| 00:35:11 | The plots Vertical axis is probability; horizontal is size (nm) |
| 00:36:04 | Malvern Application Note MRK1262-01Particle Sizing of Cement using the Mastersizer 2000 |
| 00:36:53 | Practical and ideal Tromp plotsNote the “fish-hook” shape |
| 00:37:33 | Fish hook effect |
| 00:40:17 | Probable error of separation, ET, or Ecart probable/Ecart Terra |
| 00:41:21 | Many formulae for the curve |
| 00:42:21 | Bennet (1936) – the ‘B’ in RRSB…. |
| 00:43:29 | Applies to nuclear explosion fragments too.. |
| 00:44:06 | http://www.themininggrindingoffice.com |
| 00:44:22 | Untitled |
| 00:44:37 | Cyclones (air or hydro) |
| 00:45:56 | Cyclone design |
| 00:46:29 | Cyclones |
| 00:47:18 | Malvern Application Note MRK1262-01 Particle Sizing of Cement using the Mastersizer 2000 |
| 00:47:30 | Death |
| 00:48:14 | References |
| 00:49:02 | Older Malvern white papers |
| 00:49:19 | Older Malvern white papers |
| 00:49:34 | Acknowledgements and Thanks |
| 00:50:05 | Contact Information |
This presentation discusses the Tromp curve and its use in describing classifier efficiency.