| Autor: |
Grigor'ev, Yuri M., Sivtsev, Vasiliy I., Yakovlev, Boris V. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2018, Vol. 2041 Issue 1, p050008-1-050008-4, 4p |
| Abstrakt: |
Staged crushing of kimberlites are planned to introduced at the enterprises of JSC ALROSA to prepare the ore for enrichment. For such manufacturing schemes, there are risks of freezing of crushed ore during emergency shutdowns of equipment. To assess these risks, a thermodynamic calculation method is being developed in this paper. A physical model has been developed, according to which heat exchange occurs only through the surface of ore pieces. Mathematical model is developed on the basis of the proposed physical model and contains system of differential equations with respect to the ore and the environment temperatures depending on time with the initial conditions. Computational implementation of the developed model is accomplished. The model parameters are adapted from the experimental data. The developed model can be used to evaluate the parameters of congelation of wet and frozen ore pieces to each other and parameters of freezing of ore to the wall of the plants at various ambient temperatures. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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