Status : Verified
| Personal Name | Luistro, Franco Danilo Cruz |
|---|---|
| Resource Title | Modelling and simulation of the grinding circuit performance of the CLINN-GEM technology |
| Date Issued | 7 September 2021 |
| Abstract | Comminution is considered as one of the most energy intensive operations in metal recovery. It is here that the target particle size, P80, is achieved to facilitate mineral liberation for the effective recovery of the valuable minerals. To facilitate a high degree of liberation, ore particle sizes should be within the range of the valuable mineral particle sizes. In this study, the grinding circuit of the CLINN-GEM mineral processing plant located in Itogon, Benguet was used as basis for MDK simulations to obtain the desired P80 in processing gold ore consisting primarily of calcite, quartz, and considerable amounts of sulfides. Upon analysis of the optimization done using a 5-level, 5-factor Taguchi L25 design of experiment evaluated at 95% confidence interval, it was found that the comminution product particle size can be expressed by the function: P80 = 56.4 - 1.315 (Ball Mill % Solids) + 2.571 (Cyclone Overflow % solids) – 1686 (hydrocyclone spigot diameter) + 1808 (hydrocyclone vortex finder diameter). From the scenarios made during the response optimization of parameters, adjusting the operating % solids inside the ball mill from 72% to 77.43% and the target cyclone overflow % solids from 40% to 30% is enough to achieve the desired product size of 60 microns without changing any of the equipment dimensions or components. For further adjustments, the study on the effects of parameters have indicated that a lower ball mill critical speed fraction, and a smaller vortex finder diameter decreases the overall comminution product particle size while the operating % solids inside the ball mill and the hydrocyclone spigot diameter has the opposite effect. A lower cyclone overflow % solids also indicate finer P80. |
| Degree Course | MS Metallurgical Engineering |
| Language | English |
| Keyword | simulation; comminution; grinding; mineral processing; CLINN-GEM |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : P - Author wishes to publish the work personally.
Access Permission : Limited Access