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| Titel: |
Computational Techniques for Coal Washery Optimization - Parallel Gravity and Flotation Separation |
| Auteur: |
Rong, R. X. Lyman, G. J. |
| Verschenen in: |
International journal of coal preparation and utilization |
| Paginering: | Jaargang 2 (1985) nr. 1 pagina's 51-67 |
| Jaar: |
1985 |
| Inhoud: |
To carry out washery optimization calculations in a digital computer, both the raw coal feed characteristics and separator efficiency performance must be reduced to a form that is both accurate and easy to translate into code. A systematic analysis has been made of mathematical representation for partition curves and separation characteristics for froth flotation machines. A number of representations of the partition curves have been found to be useful. The programs developed accept conventional partition data or modelled partition curve parameters. Flotation performance is specified according to a two-rate constant kinetic model. Feed coal characteristics used are typical for coal preparations plants in China. Optimization of the process is carried out by maximization of yield, and three programs have been developed for the purpose. The programs can deal with any one of seven plant flowsheets commonly used in China. One program can be applied to determine the optimal ash content of clean coal for either each category of separator or each coal feed group. The other two programs are very useful to determine the optimal cut points of separators being installed in a plant. The computing techniques applied in both the programs are the Rosenbrock pattern search and the so-called “Replacement Method”. The cubic spline interpolation techniques have been applied in a number of calculations with success. All the programs have been proved to be effective and convenient tools for the design and operation of coal preparation plants. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 7 gevonden artikelen
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